BACKGROUND The late presentation of dural tears(LPDT)has a low incidence rate and hidden symptoms and is easily ignored in clinical practice.If the disease is not treated in time,a series of complications may occur,in...BACKGROUND The late presentation of dural tears(LPDT)has a low incidence rate and hidden symptoms and is easily ignored in clinical practice.If the disease is not treated in time,a series of complications may occur,including low intracranial pressure headache,infection,pseudodural cyst formation,and sinus formation.Here,we describe two cases of LPDT.CASE SUMMARY Two patients had sudden fever 1 wk after lumbar surgery.Physical examination showed obvious tenderness in the operation area.The patients were confirmed as having LPDT by lumbar magnetic resonance imaging and surgical exploration.One case was caused by continuous negative pressure suction and malnutrition,and the other was caused by decreased dural ductility and low postoperative nutritional status.The first symptom of both patients was fever,with occasional headache.Both patients underwent secondary surgery to treat the LPDT.Dural defects were observed and dural sealants were used to seal the dural defects,then drainage tubes were retained for drainage.After the operation,the patients were treated with antibiotics and the patients’surgical incisions healed well,without fever or incision tenderness.Both recovered and were discharged 1 wk after the operation.CONCLUSION LPDT is a rare complication of spinal surgery or neurosurgery that has hidden symptoms and can easily be overlooked.Since it may cause a series of complic-ations,LPDT needs to be actively addressed in clinical practice.展开更多
BACKGROUND Superior capsular reconstruction(SCR)with long head of biceps tendon(LHBT)transposition was developed to massive and irreparable rotator cuff tears(MIRCTs);however,the outcomes of this technique remain uncl...BACKGROUND Superior capsular reconstruction(SCR)with long head of biceps tendon(LHBT)transposition was developed to massive and irreparable rotator cuff tears(MIRCTs);however,the outcomes of this technique remain unclear.AIM To perform a systematic review of biomechanical outcomes and a meta-analysis of clinical outcomes after LHBT transposition for MIRCTs.METHODS We performed a systematic electronic database search on PubMed,EMBASE,and Cochrane Library.Studies of SCR with LHBT transposition were included according to the inclusion and exclusion criteria.Biomechanical studies were assessed for main results and conclusions.Included clinical studies were evaluated for quality of methodology.Data including study characteristics,cohort demographics,and outcomes were extracted.A meta-analysis was conducted of the clinical outcomes.RESULTS According to our inclusion and exclusion criteria,a total of six biomechanical studies were identified and reported an overall improvement in subacromial contact pressures and prevention of superior humeral migration without limiting range of motion(ROM)after LHBT transposition for MIRCTs.A total of five clinical studies were included in the meta-analysis of LHBT transposition outcomes,consisting of 253 patients.The results indicated that compared to other surgical methods for MIRCTs,LHBT transposition had advantages of more significant improvement in ROM(forward flexion mean difference[MD]=6.54,95%confidence interval[CI]:3.07-10.01;external rotation[MD=5.15,95%CI:1.59-8.17];the acromiohumeral distance[AHD][MD=0.90,95%CI:0.21-1.59])and reducing retear rate(odds ratio=0.27,95%CI:0.15-0.48).No significant difference in American Shoulder and Elbow Surgeons score,visual analogue scale score,and University of California at Los Angles score was demonstrated between these two groups for MIRCTs.CONCLUSION In general,SCR with LHBT transposition was a reliable and economical technique for treating MIRCTs,both in terms of biomechanical and clinical outcomes,with comparable clinical outcomes,improved ROM,AHD,and reduced the retear rates compared to conventional SCR and other established techniques.More high-quality randomized controlled studies on the long-term outcomes of SCR with LHBT transposition are required to further assess.展开更多
Background:Neuroinflammation is an essential event in Parkinson’s disease(PD).Identifying affordable and less invasive biomarkers to make an early diagnosis and monitor therapeutic strategies should be a priority amo...Background:Neuroinflammation is an essential event in Parkinson’s disease(PD).Identifying affordable and less invasive biomarkers to make an early diagnosis and monitor therapeutic strategies should be a priority among researchers.The study’s objective was to measure tear levels of cytokines in subjects with PD and their association with motor features and the presence of dry eye symptoms.Methods:A total of 16 subjects with PD and 16 age-and sex-matched controls were included.Movement Disorders Society-Unified Parkinson’s Disease Rating Scale(MDS-UPDRS),Hoehn and Yahr(HY)stage scale,Montreal Cognitive Assessment(MoCA),tear break-up time(TBUT),blink rate(BR),Dry Eye Questionnaire 5(DEQ-5)were examined,and pro-inflammatory cytokines[interleukin(IL)-1β,IL-6,IL-8,IL-10,IL-12p70 and tumor necrosis factor-alpha(TNF-α)]were quantified in tears using the BD Cytometric Bead Array Human Inflammatory Cytokine Kit.Results:Higher tear TNF-αwere quantified in PD compared to controls(2.94±3.95 vs.0.33±0.49 pg/mL,P=0.008).According to DEQ-5,50.0%(n=8)of PD subjects and 12.5%(n=2)controls had dry eye disease(DED).No differences were found in cytokines concentrations between PD patients with DED compared to those without DED.IL-8 was associated with the HY stage,TBUT,DEQ-5,and a better MoCA score.A higher BR correlated moderately with a lower HY stage(r=−0.645,P=0.007),and DED patients have lower BR in PD(12.14±2.54 vs.9.0±2.06 blinks/minute,P=0.031).Conclusions:PD patients have higher levels of TNF-αin tears than age-and sex-matched HC.IL-8 in tears may be both involved in the severity of the disease and in the development of DED in PD.In addition,our findings suggest that as HY stage increases,indicating a more advanced stage,BR decreases,indicating greater motor impairment.Conversely,the presence of DED is associated with higher levels of bradykinesia in PD patients,suggesting a potential relationship between DED and motor impairment severity.展开更多
·AIM: To detect proteomic differences in tears between adenoid cystic carcinoma(ACC) and pleomorphic adenoma(PA).·METHODS: Tear samples were collected from 4 patients with ACC, 5 with PA, and 4 control cases...·AIM: To detect proteomic differences in tears between adenoid cystic carcinoma(ACC) and pleomorphic adenoma(PA).·METHODS: Tear samples were collected from 4 patients with ACC, 5 with PA, and 4 control cases. Label-free analysis and parallel reaction monitoring(PRM) were used to screen and validate the tear proteome. Gene Ontology(GO) annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) were conducted for bioinformatics analysis.·RESULTS: In total, 1059 proteins in tear samples were identified by label-free analysis. Between ACC and PA, 415 differentially expressed proteins were detected. Based on the GO annotation, enzyme regulator activity and serinetype endopeptidase inhibitor activity in the molecular function category, blood microparticle and extracellular matrix in the cellular component category, and response to nutrient levels in the biological process category were most predominant. By KEGG pathway annotation, the different proteins between ACC and PA mainly par ticipated in complement and coagulation cascades, amoebiasis, African trypanosomiasis and cholesterol metabolism. Eight proteins with mostly significant differences were verified by PRM, and five proteins with more than 10-fold increases in ACC compared with PA, including integrin β, α-2-macroglobulin, epididymal secretory sperm binding protein Li 78p, RAB5C, and complement C5, were identified.·CONCLUSION: The combined tools of label-free analysis and PRM are very effective and efficient, especially for samples such as tears. Some proteomic dif ferences in tears between ACC and PA are identified and these protein candidates may be specific biomarkers for future exploration.展开更多
Over the years,several studies demonstrated the crucial role of knee menisci in joint biomechanics.As a result,save the meniscus has become the new imperative nowadays,and more and more studies addressed this topic.Th...Over the years,several studies demonstrated the crucial role of knee menisci in joint biomechanics.As a result,save the meniscus has become the new imperative nowadays,and more and more studies addressed this topic.The huge amount of data on this topic may create confusion in those who want to approach this surgery.The aim of this review is to provide a practical guide for treatment of meniscus tears,including an overview of technical aspects,outcomes in the literature and personal tips.Taking inspiration from a famous movie directed by Sergio Leone in 1966,the authors classified meniscus tears in three categories:The good,the bad and the ugly lesions.The inclusion in each group was determined by the lesion pattern,its biomechanical effects on knee joint,the technical challenge,and prognosis.This classification is not intended to substitute the currently proposed classifications on meniscus tears but aims at offering a readerfriendly narrative review of an otherwise difficult topic.Furthermore,the authors provide a concise premise to deal with some aspects of menisci phylogeny,anatomy and biomechanics.展开更多
Objective: To evaluate the diagnostic efficacy of magnetic resonance imaging (MRI) for the detection of partial-thickness rotator cuff tears (PTT) and full-thickness rotator cuff tears(FTT) by comparing its findings w...Objective: To evaluate the diagnostic efficacy of magnetic resonance imaging (MRI) for the detection of partial-thickness rotator cuff tears (PTT) and full-thickness rotator cuff tears(FTT) by comparing its findings with surgical findings as the gold standard and to improve the previous MRI accuracy in diagnosing rotator cuff tears (RCT) considering more variables. Methods: In 45 months, 804 patients underwent MRI shoulder joint. Among them, only 95 cases had undergone both MRI imaging and surgery accordingly. The patient records were evaluated retrospectively if MRI and surgery were performed within 40 days of MRI. MRI findings were categorized into PTT, FTT and no tears which were further divided into different types according to four main nominal data as variables viz. site, size, shape and muscle involvement in RCT and were correlated with surgical findings for statistical calculation by using Kappa coefficient and McNemar Bowker test. Results: 81 patients (86 RCTs) underwent surgery within 40 days. On the basis of site as variable, MRI correctly depicted 100% of full thickness tears(FTT), 85% of bursal partial thickness tears(PTT), 80.4% of articular partial thickness tears(PTT). The consistency in diagnosis of RCT between MRI and surgery was moderate (Kappa coefficient 0.645). Overall sensitivity, specificity and accuracy of MRI for diagnosing PTT was 87.3%, 53.3% and 81.3%;and that for FTT was 100%, 98.7% and 98.8% respectively. Likewise on the basis of size, shape and muscles involved, the consistency between MRI and surgery was poor for size and shape and moderate for muscles involved;and the difference in diagnosing RCT by MRI and surgery was significant for shape (P = 0.002) only, but not significant for size (P = 0.16) and for muscles involved (P = 0.206) respectively. The agreement between MRI and surgery in diagnosing calcific tendinitis and shoulder joint hematoma with Kappa coefficient is (0.577) and (0.556) respectively. Conclusion: MRI has better accuracy for detecting FTT and has high sensitivity and positive predictive value in diagnosing both PTT and FTT. Combining more others variables in addition to RCT, MRI offers a great value in diagnosing RCT.展开更多
Lesions of the rotator cuff(RC) are a common occurrence affecting millions of people across all parts of the globe. RC tears are also rampantly prevalent with an agedependent increase in numbers. Other associated fact...Lesions of the rotator cuff(RC) are a common occurrence affecting millions of people across all parts of the globe. RC tears are also rampantly prevalent with an agedependent increase in numbers. Other associated factors include a history of trauma, limb dominance, contralateral shoulder, smoking-status, hypercholesterolemia, posture and occupational dispositions. The challenge lies in early diagnosis since a high proportion of patients are asymptomatic. Pain and decreasing shoulder power and function should alert the heedful practitioner in recognizing promptly the onset or aggravation of existing RC tears. Partial-thickness tears(PTT) can be bursalsided or articular-sided tears. Over the course of time, PTT enlarge and propagate into full-thickness tears(FTT) and develop distinct chronic pathological changes due to muscle retraction, fatty infiltration and muscle atrophy. These lead to a reduction in tendon elasticity and viability. Eventually, the glenohumeral joint experiences a series of degenerative alterations- cuff tear arthropathy. To avert this, a vigilant clinician must utilize and corroborate clinical skill and radiological findings to identify tear progression. Modern radio-diagnostic means of ultrasonography and magnetic resonance imaging provide excellent visualization of structural details and are crucial in determining further course of action for these patients. Physical therapy along with activity modifications, antiinflammatory and analgesic medications form the pillars of nonoperative treatment. Elderly patients with minimal functional demands can be managed conservatively and reassessed at frequent intervals. Regular monitoring helps in isolating patients who require surgical interventions. Early surgery should be considered in younger, active and symptomatic, healthy patients. In addition to being costeffective, this helps in providing a functional shoulder witha stable cuff. An easily reproducible technique of maximal strength and sturdiness should by chosen among the armamentarium of the shoulder surgeon. Grade 1 PTTs do well with debridement while more severe lesions mandate repair either by trans-tendon technique or repair following conversion into FTT. Early repair of repairable FTT can avoid appearance and progression of disability and weakness. The choice of surgery varies from surgeon-to-surgeon with arthroscopy taking the lead in the current scenario. The double-row repairs have an edge over the single-row technique in some patients especially those with massive tears. Stronger, costeffective and improved functional scores can be obtained by the former. Both early and delayed postoperative rehabilitation programmes have led to comparable outcomes. Guarded results may be anticipated in patients in extremes of age, presence of comorbidities and severe tear patters. Overall, satisfactory results are obtained with timely diagnosis and execution of the appropriate treatment modality.展开更多
·AIM:Toevaluatethevisualfunctionevolutionofretinal pigment epithelial(RPE) tears in patients with age-related macular degeneration(AMD) according to type of occurrence [spontaneous or secondary to anti-vascular e...·AIM:Toevaluatethevisualfunctionevolutionofretinal pigment epithelial(RPE) tears in patients with age-related macular degeneration(AMD) according to type of occurrence [spontaneous or secondary to anti-vascular endothelial growth factor(anti-VEGF) injection] and the topographic location of the tear after a two-year followup period.·METHODS: A total of 15 eyes of 14 patients with RPE tears in exudative AMD were analyzed retrospectively at the University Eye Clinic of Trieste. Inclusion criteria were: patient age of 50 or older with AMD and RPE tears both spontaneous occurring or post anti-VEGF treatment. Screening included: careful medical history,complete ophthalmological examination, fluorescein angiography(FA), indocyanine green angiography(ICG),autofluorescence and infrared imaging and optical coherence tomography(OCT). Patients were evaluated every month for visual acuity(VA), fundus examination and OCT. Other data reported were: presence of PED,number of injections before the tear, location of the lesion.·RESULTS:Meanfollow-up was24wk(SD±4wk). Atotal of 15 eyes were studied for RPE tear. In 6 cases(40%),the RPE tears occurred within two years of anti-VEGF injections the others occurred spontaneously. In 13cases(86.6%), the RPE tear was associated with pigment epithelial detachment(PED). In 7 cases(46.6%), the RPE tear occurred in the central area of the retina and involved the fovea. Two lesions were found in the parafoveal region, six in the extra-macular area. In all cases visual acuity decreased at the end of the follow-up period(P <0.01) independently of the type or the topographical location of the lesion.·CONCLUSION: RPE tear occurs in exudative AMD as a spontaneous complication or in relation to anti-VEGF injections. Visual acuity decreased significantly and gradually in the follow-up period in all cases. No correlation was found between visual loss and the type of onset or the topographic location of the tears.展开更多
AIM:To evaluate the effect of the application of plasma rich in growth factors(PRGF)-Endoret to the remaining intact bundle in partial anterior cruciate ligament(ACL)tears.METHODS:A retrospective review of the rate of...AIM:To evaluate the effect of the application of plasma rich in growth factors(PRGF)-Endoret to the remaining intact bundle in partial anterior cruciate ligament(ACL)tears.METHODS:A retrospective review of the rate of return to play in football players treated with the application of PRGF-Endoret in the remaining intact bundle in partial ACL injuries that underwent surgery for knee instability.Patients with knee instability requiring revision surgery for remnant ACL were selected.PRGF was applied in the wider part of posterolateral bundle and the time it took patients to return to their full sporting activities at the same level before the injury was evaluated.RESULTS:A total of 19 patients were reviewed.Three had a Tegner activity level of 10 and the remaining 16level 9.The time between the injury and the time of surgery was 5.78 wk(SD 1.57).In total,81.75%(16/19)returned to the same pre-injury level of sport activity(Tegner 9-10).17 males and 2 females were treated.The rate of associated injury was 68.42%meniscal lesions and 26.31%cartilage lesions.The KT-1000 values were normalized in all operated cases.One patient was not able to return to sport due to the extent of their cartilage lesions.The 15 patients with Tegner activity level 9 returned to play at an average of 16.20 wk(SD1.44)while the 3 patients with Tegner activity level 10did so in 12.33 wk(SD 1.11).CONCLUSION:With one remaining intact bundle the application of PRGF-Endoret in instability cases due to partial ACL tear showed high return to sport rates at pre-injury level in professional football players.展开更多
Smut is a serious disease in Job's tears,also known as adlay,and contributes to the reduction of crop yield in agricultural fields.In this study,the key pathogenic fungi in adlay smut disease were first identified...Smut is a serious disease in Job's tears,also known as adlay,and contributes to the reduction of crop yield in agricultural fields.In this study,the key pathogenic fungi in adlay smut disease were first identified by internal transcribed spacer region(ITS)high-throughput sequencing and then used to elucidate the composition and diversity of the fungal community in adlay smut.Results indicate that an abundance of operational taxonomic units(OTUs)were detected in the infected involucres of flowering plants and the OTUs were classified to nine phyla,20 classes,45 orders,90 families and 119 genera.A total of 4986 OTUs clustered together,sharing six core OTUs in all samples,while 145 OTUs were shared among four geographical groups.The Shannon and Simpson indices ranged from 0.137–1.629 and 0.357–0.970,respectively.Community diversity ranked as Anshun(AS)>Qinglong(QL)>Xingren(XR)>Xingyi(XY)among the four geographical groups by Shannon and Simpson indices,exhibiting complex community diversities among accessions and geographical groups.The richness and diversity data imply a weak relationship between the accession community richness and geographical origins of samples.Two closely related fungal genera,Sporisorium and Ustilago,were implicated as causes of smut disease.The genus Sporisorium appears to be more commonly found among accessions and thus is more likely to be the fungal pathogen causing smut in adlay.This work can facilitate strategies to control and prevent smut infection to improve adlay yield.展开更多
AIM:To compare outcomes of applying preservative free artificial tears(PFAT)with and without hyaluronic acid(HA)in early postoperative course following photorefractive keratectomy(PRK).METHODS:In this triple-blinded r...AIM:To compare outcomes of applying preservative free artificial tears(PFAT)with and without hyaluronic acid(HA)in early postoperative course following photorefractive keratectomy(PRK).METHODS:In this triple-blinded randomized clinical trial,PRK procedure was performed on both eyes of 230 patients.Following PRK,patients were divided into three groups:the HA^(+)group,44 patients PFAT containing HA;the HA-group,71 patients PFAT without HA were administered 5 times per day(every 4 h);the third group,115 patients received no PFAT before lens removal.On the 1st and 4th postoperative day,Visual Analogue Score(VAS)was utilized to evaluate patient’s level of pain.Participants were asked to complete a questionnaire about the severity of eye discomfort ranked from 0 to 10(0=no complaint;10=most severe complaint experienced).RESULTS:In eyes receiving PFAT with or without HA(Drop group),mean scores for epiphora,foreign body sensation,and blurred vision on the 1st postoperative day were statistically lower(P<0.05).Filamentous keratitis(FK)was detected in 11(4.7%)eyes,and recurrent corneal erosion(RCE)was observed in 5(2.1%)eyes.In the control group,FK was noted in 16(6.9%)eyes while 13(5.6%)eyes had RCE and 5(2.1%)eyes had corneal haze.The rate of complications was statistically lower in Drop group(P=0.009).However,the aforementioned scores were not statically different between HA^(+)and HA-group one and two(P=0.29).CONCLUSION:Following PRK,applying PFAT with and without HA yields faster visual recovery,decreases postoperative ocular discomfor t and haze formation;however there is no additive effect for HA.展开更多
Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling anti...Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling antioxidant characteristics to drought stress simulated by polyethylene glycol (PEG) 6000 solutions with 0, -0.05, -0.1, -0.15, and -0.2 MPa osmotic potentials. The results showed that the germination energy, germination rate, germination index, root and seedling lengths, root and seedling diameters, root and seedling fresh masses, root and seedling dry masses, and seedling relative water content (RWC) decreased with the decrease of the osmotic potential of PEG 6000 solution. The contents of hydrogen peroxide (H2O2), malondialdehyde (MDA), and proline in seedling increased with the decrease of the osmotic potential of PEG 6000 solution. The activities of peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) in seedling increased and then decreased with the decrease of osmotic potential of PEG 6000 solution. -0.1 MPa was the optimal osmotic potential of PEG 6000 solution simulated drought stress at germination stage for Job’s tears. The proline content and activities of POD and CAT were important mechanisms for the maintenance of drought resistance in Job’s tears seedling.展开更多
● AIM: To observe the efficacy of different artificial eye drops on corneal epithelium healing in rabbit.● METHODS: Thirty-five rabbits with 6 mm diameter central corneal epithelium removed were randomly assigned to...● AIM: To observe the efficacy of different artificial eye drops on corneal epithelium healing in rabbit.● METHODS: Thirty-five rabbits with 6 mm diameter central corneal epithelium removed were randomly assigned to six groups: 0.9% normal saline(NS) group, 0.1% hyaluronate(HA) group, 0.3% HA group, Tears Naturale Free?(TNF) group, 0.4% polyethylene glycol(PEG) group, 0.5% carboxymethyl cellulose(CMC) group and blank control group. Treatments were administered topically four times daily. Corneal epithelium healing was evaluated by the percentage reduction in wound area at 24, 36, 48, 60, and 72 h after removal of the corneal epithelium. Cornea re-epithelialization was also assessed by histological analysis and electron microscopy. ● RESULTS: All corneal wounds completely re-epithelialized in less than 72 h. The average re-epithelialization time was 47.61±4.25 h in the 0.3% HA group and 49.72±1.05 h in the 0.9% NS group, followed by 0.1% HA, TNF, 0.4% PEG, 0.5% CMC, and lastly by the control group. Compared to the control group, there were significant differences among 0.3% HA, 0.9% NS, PEG, and TNF(P<0.05) groups. At the first 24 h, re-epithelialization at the 0.3% HA, TNF, and 0.9% NS treatment groups were significantly faster than the other groups. At 48 h post-wounding, corneal epithelium is nearly completing re-epithelialization at 0.3% HA and 0.9% NS treatment groups. Electron microscopy revealed that there were a large number of vacuoles in the cells of the 0.9% NS group at 72 h.● CONCLUSION: Artificial tears promote corneal reepithelium varied in the efficacy. Obviously, all artificial eye drops better than blank group. In the process of corneal healing, corneal epithelium cells suffered from hypoxia caused by NS.展开更多
BACKGROUND Partial tears of the anterior cruciate ligament(ACL)are frequent,and there is still considerable controversy surrounding their diagnosis,natural history and treatment.AIM To examine patient-reported outcome...BACKGROUND Partial tears of the anterior cruciate ligament(ACL)are frequent,and there is still considerable controversy surrounding their diagnosis,natural history and treatment.AIM To examine patient-reported outcomes,physical examination and magnetic resonance imaging(MRI)findings of partial ACL tears treated with an intraarticular injection of platelet-rich plasma(PRP)compared to a control group.METHODS From January 2015 to November 2017,consecutive patients from a single institution with partial ACL tears treated nonoperatively were prospectively evaluated.Partial tears were defined as a positive Lachman test with a clear endpoint,a negative pivot-shift and less than 3 mm of side-to-side difference using the KT1000 arthrometer.Patients in group 1 were treated with one intraarticular injection of PRP and specific physical therapy protocol.Control group consisted of patients treated only with physical therapy.Prospective analyzed data included physical examination,Tegner activity level and Lysholm and International Knee Documentation Committee scores.Baseline MRI findings and at 6 mo follow-up were reviewed.Failure was defined as those patients with clinical instability at follow-up that required a subsequent ACL reconstruction.RESULTS A total of 40 patients where included,21 treated with PRP injection with a mean follow-up of 25 mo[standard deviation(SD):3.6]and 19 in the control group with a mean follow-up of 25 mo(SD:5.68).Overall failure rate was 32.0%(n=13).No significant differences were observed between groups regarding subjective outcomes,return to sport and failure rate.MRI findings revealed an improvement in the ACL signal in half of the patients of both groups.However,we did not find a significant relationship between MRI findings and clinical outcomes.CONCLUSION Overall,95.0%of patients returned to sports at a mean follow-up of 25 mo.Mean time to return to sports was 4 mo.Out of these patients,almost 30.0%in each group had a new episode of instability and required surgery at a median time of 5 mo in group 1 and 8 mo in group 2.The addition of PRP alone was not sufficient to enhance any of the outcome measures evaluated,including MRI images,clinical evaluation and failure rate.展开更多
OBJECTIVE: To study the clinical comparison and analysis of decoction of Traditional Chinese Medicine(TCM) combined with ear acupoint application and simple artificial tears in the treatment of dry eye syndrome. METHO...OBJECTIVE: To study the clinical comparison and analysis of decoction of Traditional Chinese Medicine(TCM) combined with ear acupoint application and simple artificial tears in the treatment of dry eye syndrome. METHODS:A total of 62 patients(124 eyes) with dry eye syndrome treated in the Department of Ophthalmology of The 4th People's Hospital of Shenyang from July 2017 to March 2018 were selected and equally divided into 2 groups according to the admission order. The observation group received the combination therapy of TCM decoction and ear acupoint application, while the control group was given the simple artificial tears. The symptom score after 2 weeks, 4 weeks, and 8 weeks as well as the indicators including break-up time(BUT), Schirmer I test(SIT) and fluorescein(FL) were recorded and compared between groups. RESULTS: The symptom scores had no difference before treatment(P > 0.05), and were better in the observation group than those in the control group after treatment(P < 0.05). At 2 weeks, 4 weeks, and 8 weeks after the treatment, the amelioration level of BUT, SIT, and FL indicators in the observation group was better than that of the control group(P < 0.05). CONCLUSION: Compared with the artificial tears treatment method, the TCM decoction combined with ear acupoint application can significantly ameliorate the tear film stability, tear secretion, and reduce ocular surface damage for dry eye patients.展开更多
Dear sir,I am Dr Zhi-Qing Chen,from the Department of Ophthalmology of the Second Affiliated Hospital of Zhejiang University in Hangzhou,Zhejiang Province,China.I write to present two cases of neovascular age-related ...Dear sir,I am Dr Zhi-Qing Chen,from the Department of Ophthalmology of the Second Affiliated Hospital of Zhejiang University in Hangzhou,Zhejiang Province,China.I write to present two cases of neovascular age-related macular degeneration(AMD)occurred retinal pigment epithelium(RPE)tears after different treatment.RPE tear is a rare complication of neovascular AMD,展开更多
AIM:To explore the ocular features of corona virus disease(COVID)-19 and severe acute respiratory syndrome coronavirus(SARS-CoV)-2 detection in tears and conjunctival scrapes in non-severe COVID-19 patients.METHODS:Th...AIM:To explore the ocular features of corona virus disease(COVID)-19 and severe acute respiratory syndrome coronavirus(SARS-CoV)-2 detection in tears and conjunctival scrapes in non-severe COVID-19 patients.METHODS:This is a multicenter observational clinical study with no intervention conducted from Jan 25th to March 1st,2020.Clinical data and samples of tears and conjunctival scraping were collected in consecutive laboratory-confirmed,non-severe COVID-19 patients from three hospitals.COVID-19 virus was analyzed by real-time reverse transcriptase polymerase chain reaction(RT-PCR)kits.RESULTS:Totally 255 laboratory-confirmed,non-severe COVID-19 patients were recruited for ocular manifestation investigation.Of them,54.9%were females,with a mean age of 49.4 y.None of the patients has evidence of uveitis;11 patients(4.3%)complained of mild asthenopia;2(0.8%)had mild conjunctival congestion and serous secretion.Twenty-five of them had performed tears and conjunctival scrape for COVID-19 virus detection,with 4 yield possible positive results in the nucleoprotein gene.One of them were asymptomatic with normal chest CT and positive pharyngeal swab result.CONCLUSION:Ocular manifestations are neither common nor specific in non-severe COVID-19 patients.Meanwhile,COVID-19 virus nucleotides can be detected in the tears and conjunctival scrape samples,warranting further research on the transmissibility by the ocular route.展开更多
Adams disease is the consequence of overly active transient receptor potential cation channels (TRP). This case report presents a patient suffering from multiple vascular problems and may provide new insights into the...Adams disease is the consequence of overly active transient receptor potential cation channels (TRP). This case report presents a patient suffering from multiple vascular problems and may provide new insights into the causes of venous problems. Endothelial and smooth muscle cells in veins contain TRP. These channels when activated excessively result in calcium accumulation, oxygen radical formation and apoptosis of endothelial and smooth muscle cells. The death of critical cells in vein valves, may lead to varicose veins. The loss of endothelial cells in venules may lead to retinal tears. Damage to vein walls may lead to a deep vein thrombosis. Transient receptor potential cation channels may be new drug targets of interest in the treatment or prevention of these conditions.展开更多
As restorative dentists, we are faced everyday with decisions about which impression materials and techniques should be used when restoring teeth. The challenge becomes bigger when the patients present with open gingi...As restorative dentists, we are faced everyday with decisions about which impression materials and techniques should be used when restoring teeth. The challenge becomes bigger when the patients present with open gingival embrasures, the dreaded “black triangles”, which tops the list of dentist frustration while taking the impression and after preparation of veneers, crowns, bridges, etc. The technique described offers an option to avoid problems related to impressions locking in gingival embrasures and tearing on removal.展开更多
Perineal tears are one of the most common complications of vaginal births and may cause discomfort and pain long time after childbirth. Visual and digital examination of perineal tears is the most common way to assess...Perineal tears are one of the most common complications of vaginal births and may cause discomfort and pain long time after childbirth. Visual and digital examination of perineal tears is the most common way to assess and classify a perineal tear. Recent research indicates that many tears diagnosed are misclassified. The aim of this systematic literature review was to outline research that investigates healthcare professionals’ clinical knowledge in assessment and classification of perineal tears in connection with childbirth. Searches were performed in PubMed and CINAHL. Six studies on the topic were identified and ?used to collect data for questionnaires. An integrative review was used in the analysis. Poor knowledge in perineal anatomy and lack of training in clinical assessment and classification of perineal trauma was evident among both physicians and midwives. These findings indicate that healthcare providers lack adequate knowledge and that they make incorrect assessments and errors in classification of perineal tears. The training in assessment and classification is crucial. Midwives are in a unique position to improve the standard of care in this field since they are often the first and many times the only to assess the injury.展开更多
基金Supported by Jilin Health Science and Technology Capability Improvement Project,No.2022C107.
文摘BACKGROUND The late presentation of dural tears(LPDT)has a low incidence rate and hidden symptoms and is easily ignored in clinical practice.If the disease is not treated in time,a series of complications may occur,including low intracranial pressure headache,infection,pseudodural cyst formation,and sinus formation.Here,we describe two cases of LPDT.CASE SUMMARY Two patients had sudden fever 1 wk after lumbar surgery.Physical examination showed obvious tenderness in the operation area.The patients were confirmed as having LPDT by lumbar magnetic resonance imaging and surgical exploration.One case was caused by continuous negative pressure suction and malnutrition,and the other was caused by decreased dural ductility and low postoperative nutritional status.The first symptom of both patients was fever,with occasional headache.Both patients underwent secondary surgery to treat the LPDT.Dural defects were observed and dural sealants were used to seal the dural defects,then drainage tubes were retained for drainage.After the operation,the patients were treated with antibiotics and the patients’surgical incisions healed well,without fever or incision tenderness.Both recovered and were discharged 1 wk after the operation.CONCLUSION LPDT is a rare complication of spinal surgery or neurosurgery that has hidden symptoms and can easily be overlooked.Since it may cause a series of complic-ations,LPDT needs to be actively addressed in clinical practice.
基金the National Natural Science Foundation of China,No.81972125 and No.82172510.
文摘BACKGROUND Superior capsular reconstruction(SCR)with long head of biceps tendon(LHBT)transposition was developed to massive and irreparable rotator cuff tears(MIRCTs);however,the outcomes of this technique remain unclear.AIM To perform a systematic review of biomechanical outcomes and a meta-analysis of clinical outcomes after LHBT transposition for MIRCTs.METHODS We performed a systematic electronic database search on PubMed,EMBASE,and Cochrane Library.Studies of SCR with LHBT transposition were included according to the inclusion and exclusion criteria.Biomechanical studies were assessed for main results and conclusions.Included clinical studies were evaluated for quality of methodology.Data including study characteristics,cohort demographics,and outcomes were extracted.A meta-analysis was conducted of the clinical outcomes.RESULTS According to our inclusion and exclusion criteria,a total of six biomechanical studies were identified and reported an overall improvement in subacromial contact pressures and prevention of superior humeral migration without limiting range of motion(ROM)after LHBT transposition for MIRCTs.A total of five clinical studies were included in the meta-analysis of LHBT transposition outcomes,consisting of 253 patients.The results indicated that compared to other surgical methods for MIRCTs,LHBT transposition had advantages of more significant improvement in ROM(forward flexion mean difference[MD]=6.54,95%confidence interval[CI]:3.07-10.01;external rotation[MD=5.15,95%CI:1.59-8.17];the acromiohumeral distance[AHD][MD=0.90,95%CI:0.21-1.59])and reducing retear rate(odds ratio=0.27,95%CI:0.15-0.48).No significant difference in American Shoulder and Elbow Surgeons score,visual analogue scale score,and University of California at Los Angles score was demonstrated between these two groups for MIRCTs.CONCLUSION In general,SCR with LHBT transposition was a reliable and economical technique for treating MIRCTs,both in terms of biomechanical and clinical outcomes,with comparable clinical outcomes,improved ROM,AHD,and reduced the retear rates compared to conventional SCR and other established techniques.More high-quality randomized controlled studies on the long-term outcomes of SCR with LHBT transposition are required to further assess.
基金supported by Hospital Fundacion Nuestra Senora de la Luz,Private Assistance Institution.
文摘Background:Neuroinflammation is an essential event in Parkinson’s disease(PD).Identifying affordable and less invasive biomarkers to make an early diagnosis and monitor therapeutic strategies should be a priority among researchers.The study’s objective was to measure tear levels of cytokines in subjects with PD and their association with motor features and the presence of dry eye symptoms.Methods:A total of 16 subjects with PD and 16 age-and sex-matched controls were included.Movement Disorders Society-Unified Parkinson’s Disease Rating Scale(MDS-UPDRS),Hoehn and Yahr(HY)stage scale,Montreal Cognitive Assessment(MoCA),tear break-up time(TBUT),blink rate(BR),Dry Eye Questionnaire 5(DEQ-5)were examined,and pro-inflammatory cytokines[interleukin(IL)-1β,IL-6,IL-8,IL-10,IL-12p70 and tumor necrosis factor-alpha(TNF-α)]were quantified in tears using the BD Cytometric Bead Array Human Inflammatory Cytokine Kit.Results:Higher tear TNF-αwere quantified in PD compared to controls(2.94±3.95 vs.0.33±0.49 pg/mL,P=0.008).According to DEQ-5,50.0%(n=8)of PD subjects and 12.5%(n=2)controls had dry eye disease(DED).No differences were found in cytokines concentrations between PD patients with DED compared to those without DED.IL-8 was associated with the HY stage,TBUT,DEQ-5,and a better MoCA score.A higher BR correlated moderately with a lower HY stage(r=−0.645,P=0.007),and DED patients have lower BR in PD(12.14±2.54 vs.9.0±2.06 blinks/minute,P=0.031).Conclusions:PD patients have higher levels of TNF-αin tears than age-and sex-matched HC.IL-8 in tears may be both involved in the severity of the disease and in the development of DED in PD.In addition,our findings suggest that as HY stage increases,indicating a more advanced stage,BR decreases,indicating greater motor impairment.Conversely,the presence of DED is associated with higher levels of bradykinesia in PD patients,suggesting a potential relationship between DED and motor impairment severity.
文摘·AIM: To detect proteomic differences in tears between adenoid cystic carcinoma(ACC) and pleomorphic adenoma(PA).·METHODS: Tear samples were collected from 4 patients with ACC, 5 with PA, and 4 control cases. Label-free analysis and parallel reaction monitoring(PRM) were used to screen and validate the tear proteome. Gene Ontology(GO) annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) were conducted for bioinformatics analysis.·RESULTS: In total, 1059 proteins in tear samples were identified by label-free analysis. Between ACC and PA, 415 differentially expressed proteins were detected. Based on the GO annotation, enzyme regulator activity and serinetype endopeptidase inhibitor activity in the molecular function category, blood microparticle and extracellular matrix in the cellular component category, and response to nutrient levels in the biological process category were most predominant. By KEGG pathway annotation, the different proteins between ACC and PA mainly par ticipated in complement and coagulation cascades, amoebiasis, African trypanosomiasis and cholesterol metabolism. Eight proteins with mostly significant differences were verified by PRM, and five proteins with more than 10-fold increases in ACC compared with PA, including integrin β, α-2-macroglobulin, epididymal secretory sperm binding protein Li 78p, RAB5C, and complement C5, were identified.·CONCLUSION: The combined tools of label-free analysis and PRM are very effective and efficient, especially for samples such as tears. Some proteomic dif ferences in tears between ACC and PA are identified and these protein candidates may be specific biomarkers for future exploration.
文摘Over the years,several studies demonstrated the crucial role of knee menisci in joint biomechanics.As a result,save the meniscus has become the new imperative nowadays,and more and more studies addressed this topic.The huge amount of data on this topic may create confusion in those who want to approach this surgery.The aim of this review is to provide a practical guide for treatment of meniscus tears,including an overview of technical aspects,outcomes in the literature and personal tips.Taking inspiration from a famous movie directed by Sergio Leone in 1966,the authors classified meniscus tears in three categories:The good,the bad and the ugly lesions.The inclusion in each group was determined by the lesion pattern,its biomechanical effects on knee joint,the technical challenge,and prognosis.This classification is not intended to substitute the currently proposed classifications on meniscus tears but aims at offering a readerfriendly narrative review of an otherwise difficult topic.Furthermore,the authors provide a concise premise to deal with some aspects of menisci phylogeny,anatomy and biomechanics.
文摘Objective: To evaluate the diagnostic efficacy of magnetic resonance imaging (MRI) for the detection of partial-thickness rotator cuff tears (PTT) and full-thickness rotator cuff tears(FTT) by comparing its findings with surgical findings as the gold standard and to improve the previous MRI accuracy in diagnosing rotator cuff tears (RCT) considering more variables. Methods: In 45 months, 804 patients underwent MRI shoulder joint. Among them, only 95 cases had undergone both MRI imaging and surgery accordingly. The patient records were evaluated retrospectively if MRI and surgery were performed within 40 days of MRI. MRI findings were categorized into PTT, FTT and no tears which were further divided into different types according to four main nominal data as variables viz. site, size, shape and muscle involvement in RCT and were correlated with surgical findings for statistical calculation by using Kappa coefficient and McNemar Bowker test. Results: 81 patients (86 RCTs) underwent surgery within 40 days. On the basis of site as variable, MRI correctly depicted 100% of full thickness tears(FTT), 85% of bursal partial thickness tears(PTT), 80.4% of articular partial thickness tears(PTT). The consistency in diagnosis of RCT between MRI and surgery was moderate (Kappa coefficient 0.645). Overall sensitivity, specificity and accuracy of MRI for diagnosing PTT was 87.3%, 53.3% and 81.3%;and that for FTT was 100%, 98.7% and 98.8% respectively. Likewise on the basis of size, shape and muscles involved, the consistency between MRI and surgery was poor for size and shape and moderate for muscles involved;and the difference in diagnosing RCT by MRI and surgery was significant for shape (P = 0.002) only, but not significant for size (P = 0.16) and for muscles involved (P = 0.206) respectively. The agreement between MRI and surgery in diagnosing calcific tendinitis and shoulder joint hematoma with Kappa coefficient is (0.577) and (0.556) respectively. Conclusion: MRI has better accuracy for detecting FTT and has high sensitivity and positive predictive value in diagnosing both PTT and FTT. Combining more others variables in addition to RCT, MRI offers a great value in diagnosing RCT.
文摘Lesions of the rotator cuff(RC) are a common occurrence affecting millions of people across all parts of the globe. RC tears are also rampantly prevalent with an agedependent increase in numbers. Other associated factors include a history of trauma, limb dominance, contralateral shoulder, smoking-status, hypercholesterolemia, posture and occupational dispositions. The challenge lies in early diagnosis since a high proportion of patients are asymptomatic. Pain and decreasing shoulder power and function should alert the heedful practitioner in recognizing promptly the onset or aggravation of existing RC tears. Partial-thickness tears(PTT) can be bursalsided or articular-sided tears. Over the course of time, PTT enlarge and propagate into full-thickness tears(FTT) and develop distinct chronic pathological changes due to muscle retraction, fatty infiltration and muscle atrophy. These lead to a reduction in tendon elasticity and viability. Eventually, the glenohumeral joint experiences a series of degenerative alterations- cuff tear arthropathy. To avert this, a vigilant clinician must utilize and corroborate clinical skill and radiological findings to identify tear progression. Modern radio-diagnostic means of ultrasonography and magnetic resonance imaging provide excellent visualization of structural details and are crucial in determining further course of action for these patients. Physical therapy along with activity modifications, antiinflammatory and analgesic medications form the pillars of nonoperative treatment. Elderly patients with minimal functional demands can be managed conservatively and reassessed at frequent intervals. Regular monitoring helps in isolating patients who require surgical interventions. Early surgery should be considered in younger, active and symptomatic, healthy patients. In addition to being costeffective, this helps in providing a functional shoulder witha stable cuff. An easily reproducible technique of maximal strength and sturdiness should by chosen among the armamentarium of the shoulder surgeon. Grade 1 PTTs do well with debridement while more severe lesions mandate repair either by trans-tendon technique or repair following conversion into FTT. Early repair of repairable FTT can avoid appearance and progression of disability and weakness. The choice of surgery varies from surgeon-to-surgeon with arthroscopy taking the lead in the current scenario. The double-row repairs have an edge over the single-row technique in some patients especially those with massive tears. Stronger, costeffective and improved functional scores can be obtained by the former. Both early and delayed postoperative rehabilitation programmes have led to comparable outcomes. Guarded results may be anticipated in patients in extremes of age, presence of comorbidities and severe tear patters. Overall, satisfactory results are obtained with timely diagnosis and execution of the appropriate treatment modality.
文摘·AIM:Toevaluatethevisualfunctionevolutionofretinal pigment epithelial(RPE) tears in patients with age-related macular degeneration(AMD) according to type of occurrence [spontaneous or secondary to anti-vascular endothelial growth factor(anti-VEGF) injection] and the topographic location of the tear after a two-year followup period.·METHODS: A total of 15 eyes of 14 patients with RPE tears in exudative AMD were analyzed retrospectively at the University Eye Clinic of Trieste. Inclusion criteria were: patient age of 50 or older with AMD and RPE tears both spontaneous occurring or post anti-VEGF treatment. Screening included: careful medical history,complete ophthalmological examination, fluorescein angiography(FA), indocyanine green angiography(ICG),autofluorescence and infrared imaging and optical coherence tomography(OCT). Patients were evaluated every month for visual acuity(VA), fundus examination and OCT. Other data reported were: presence of PED,number of injections before the tear, location of the lesion.·RESULTS:Meanfollow-up was24wk(SD±4wk). Atotal of 15 eyes were studied for RPE tear. In 6 cases(40%),the RPE tears occurred within two years of anti-VEGF injections the others occurred spontaneously. In 13cases(86.6%), the RPE tear was associated with pigment epithelial detachment(PED). In 7 cases(46.6%), the RPE tear occurred in the central area of the retina and involved the fovea. Two lesions were found in the parafoveal region, six in the extra-macular area. In all cases visual acuity decreased at the end of the follow-up period(P <0.01) independently of the type or the topographical location of the lesion.·CONCLUSION: RPE tear occurs in exudative AMD as a spontaneous complication or in relation to anti-VEGF injections. Visual acuity decreased significantly and gradually in the follow-up period in all cases. No correlation was found between visual loss and the type of onset or the topographic location of the tears.
文摘AIM:To evaluate the effect of the application of plasma rich in growth factors(PRGF)-Endoret to the remaining intact bundle in partial anterior cruciate ligament(ACL)tears.METHODS:A retrospective review of the rate of return to play in football players treated with the application of PRGF-Endoret in the remaining intact bundle in partial ACL injuries that underwent surgery for knee instability.Patients with knee instability requiring revision surgery for remnant ACL were selected.PRGF was applied in the wider part of posterolateral bundle and the time it took patients to return to their full sporting activities at the same level before the injury was evaluated.RESULTS:A total of 19 patients were reviewed.Three had a Tegner activity level of 10 and the remaining 16level 9.The time between the injury and the time of surgery was 5.78 wk(SD 1.57).In total,81.75%(16/19)returned to the same pre-injury level of sport activity(Tegner 9-10).17 males and 2 females were treated.The rate of associated injury was 68.42%meniscal lesions and 26.31%cartilage lesions.The KT-1000 values were normalized in all operated cases.One patient was not able to return to sport due to the extent of their cartilage lesions.The 15 patients with Tegner activity level 9 returned to play at an average of 16.20 wk(SD1.44)while the 3 patients with Tegner activity level 10did so in 12.33 wk(SD 1.11).CONCLUSION:With one remaining intact bundle the application of PRGF-Endoret in instability cases due to partial ACL tear showed high return to sport rates at pre-injury level in professional football players.
基金This work was financially supported by the Science and Technology Program in Guizhou Province,China(20162608,20162569)the High-Level Innovative Talents Training Project in Guizhou Province,China(20154016)the Southwest Guizhou of Science and Technology Program,China(2017-1-2).
文摘Smut is a serious disease in Job's tears,also known as adlay,and contributes to the reduction of crop yield in agricultural fields.In this study,the key pathogenic fungi in adlay smut disease were first identified by internal transcribed spacer region(ITS)high-throughput sequencing and then used to elucidate the composition and diversity of the fungal community in adlay smut.Results indicate that an abundance of operational taxonomic units(OTUs)were detected in the infected involucres of flowering plants and the OTUs were classified to nine phyla,20 classes,45 orders,90 families and 119 genera.A total of 4986 OTUs clustered together,sharing six core OTUs in all samples,while 145 OTUs were shared among four geographical groups.The Shannon and Simpson indices ranged from 0.137–1.629 and 0.357–0.970,respectively.Community diversity ranked as Anshun(AS)>Qinglong(QL)>Xingren(XR)>Xingyi(XY)among the four geographical groups by Shannon and Simpson indices,exhibiting complex community diversities among accessions and geographical groups.The richness and diversity data imply a weak relationship between the accession community richness and geographical origins of samples.Two closely related fungal genera,Sporisorium and Ustilago,were implicated as causes of smut disease.The genus Sporisorium appears to be more commonly found among accessions and thus is more likely to be the fungal pathogen causing smut in adlay.This work can facilitate strategies to control and prevent smut infection to improve adlay yield.
文摘AIM:To compare outcomes of applying preservative free artificial tears(PFAT)with and without hyaluronic acid(HA)in early postoperative course following photorefractive keratectomy(PRK).METHODS:In this triple-blinded randomized clinical trial,PRK procedure was performed on both eyes of 230 patients.Following PRK,patients were divided into three groups:the HA^(+)group,44 patients PFAT containing HA;the HA-group,71 patients PFAT without HA were administered 5 times per day(every 4 h);the third group,115 patients received no PFAT before lens removal.On the 1st and 4th postoperative day,Visual Analogue Score(VAS)was utilized to evaluate patient’s level of pain.Participants were asked to complete a questionnaire about the severity of eye discomfort ranked from 0 to 10(0=no complaint;10=most severe complaint experienced).RESULTS:In eyes receiving PFAT with or without HA(Drop group),mean scores for epiphora,foreign body sensation,and blurred vision on the 1st postoperative day were statistically lower(P<0.05).Filamentous keratitis(FK)was detected in 11(4.7%)eyes,and recurrent corneal erosion(RCE)was observed in 5(2.1%)eyes.In the control group,FK was noted in 16(6.9%)eyes while 13(5.6%)eyes had RCE and 5(2.1%)eyes had corneal haze.The rate of complications was statistically lower in Drop group(P=0.009).However,the aforementioned scores were not statically different between HA^(+)and HA-group one and two(P=0.29).CONCLUSION:Following PRK,applying PFAT with and without HA yields faster visual recovery,decreases postoperative ocular discomfor t and haze formation;however there is no additive effect for HA.
文摘Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling antioxidant characteristics to drought stress simulated by polyethylene glycol (PEG) 6000 solutions with 0, -0.05, -0.1, -0.15, and -0.2 MPa osmotic potentials. The results showed that the germination energy, germination rate, germination index, root and seedling lengths, root and seedling diameters, root and seedling fresh masses, root and seedling dry masses, and seedling relative water content (RWC) decreased with the decrease of the osmotic potential of PEG 6000 solution. The contents of hydrogen peroxide (H2O2), malondialdehyde (MDA), and proline in seedling increased with the decrease of the osmotic potential of PEG 6000 solution. The activities of peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) in seedling increased and then decreased with the decrease of osmotic potential of PEG 6000 solution. -0.1 MPa was the optimal osmotic potential of PEG 6000 solution simulated drought stress at germination stage for Job’s tears. The proline content and activities of POD and CAT were important mechanisms for the maintenance of drought resistance in Job’s tears seedling.
基金Supported by National Natural Science Foundation of China(No.81070705No.81270974)
文摘● AIM: To observe the efficacy of different artificial eye drops on corneal epithelium healing in rabbit.● METHODS: Thirty-five rabbits with 6 mm diameter central corneal epithelium removed were randomly assigned to six groups: 0.9% normal saline(NS) group, 0.1% hyaluronate(HA) group, 0.3% HA group, Tears Naturale Free?(TNF) group, 0.4% polyethylene glycol(PEG) group, 0.5% carboxymethyl cellulose(CMC) group and blank control group. Treatments were administered topically four times daily. Corneal epithelium healing was evaluated by the percentage reduction in wound area at 24, 36, 48, 60, and 72 h after removal of the corneal epithelium. Cornea re-epithelialization was also assessed by histological analysis and electron microscopy. ● RESULTS: All corneal wounds completely re-epithelialized in less than 72 h. The average re-epithelialization time was 47.61±4.25 h in the 0.3% HA group and 49.72±1.05 h in the 0.9% NS group, followed by 0.1% HA, TNF, 0.4% PEG, 0.5% CMC, and lastly by the control group. Compared to the control group, there were significant differences among 0.3% HA, 0.9% NS, PEG, and TNF(P<0.05) groups. At the first 24 h, re-epithelialization at the 0.3% HA, TNF, and 0.9% NS treatment groups were significantly faster than the other groups. At 48 h post-wounding, corneal epithelium is nearly completing re-epithelialization at 0.3% HA and 0.9% NS treatment groups. Electron microscopy revealed that there were a large number of vacuoles in the cells of the 0.9% NS group at 72 h.● CONCLUSION: Artificial tears promote corneal reepithelium varied in the efficacy. Obviously, all artificial eye drops better than blank group. In the process of corneal healing, corneal epithelium cells suffered from hypoxia caused by NS.
文摘BACKGROUND Partial tears of the anterior cruciate ligament(ACL)are frequent,and there is still considerable controversy surrounding their diagnosis,natural history and treatment.AIM To examine patient-reported outcomes,physical examination and magnetic resonance imaging(MRI)findings of partial ACL tears treated with an intraarticular injection of platelet-rich plasma(PRP)compared to a control group.METHODS From January 2015 to November 2017,consecutive patients from a single institution with partial ACL tears treated nonoperatively were prospectively evaluated.Partial tears were defined as a positive Lachman test with a clear endpoint,a negative pivot-shift and less than 3 mm of side-to-side difference using the KT1000 arthrometer.Patients in group 1 were treated with one intraarticular injection of PRP and specific physical therapy protocol.Control group consisted of patients treated only with physical therapy.Prospective analyzed data included physical examination,Tegner activity level and Lysholm and International Knee Documentation Committee scores.Baseline MRI findings and at 6 mo follow-up were reviewed.Failure was defined as those patients with clinical instability at follow-up that required a subsequent ACL reconstruction.RESULTS A total of 40 patients where included,21 treated with PRP injection with a mean follow-up of 25 mo[standard deviation(SD):3.6]and 19 in the control group with a mean follow-up of 25 mo(SD:5.68).Overall failure rate was 32.0%(n=13).No significant differences were observed between groups regarding subjective outcomes,return to sport and failure rate.MRI findings revealed an improvement in the ACL signal in half of the patients of both groups.However,we did not find a significant relationship between MRI findings and clinical outcomes.CONCLUSION Overall,95.0%of patients returned to sports at a mean follow-up of 25 mo.Mean time to return to sports was 4 mo.Out of these patients,almost 30.0%in each group had a new episode of instability and required surgery at a median time of 5 mo in group 1 and 8 mo in group 2.The addition of PRP alone was not sufficient to enhance any of the outcome measures evaluated,including MRI images,clinical evaluation and failure rate.
文摘OBJECTIVE: To study the clinical comparison and analysis of decoction of Traditional Chinese Medicine(TCM) combined with ear acupoint application and simple artificial tears in the treatment of dry eye syndrome. METHODS:A total of 62 patients(124 eyes) with dry eye syndrome treated in the Department of Ophthalmology of The 4th People's Hospital of Shenyang from July 2017 to March 2018 were selected and equally divided into 2 groups according to the admission order. The observation group received the combination therapy of TCM decoction and ear acupoint application, while the control group was given the simple artificial tears. The symptom score after 2 weeks, 4 weeks, and 8 weeks as well as the indicators including break-up time(BUT), Schirmer I test(SIT) and fluorescein(FL) were recorded and compared between groups. RESULTS: The symptom scores had no difference before treatment(P > 0.05), and were better in the observation group than those in the control group after treatment(P < 0.05). At 2 weeks, 4 weeks, and 8 weeks after the treatment, the amelioration level of BUT, SIT, and FL indicators in the observation group was better than that of the control group(P < 0.05). CONCLUSION: Compared with the artificial tears treatment method, the TCM decoction combined with ear acupoint application can significantly ameliorate the tear film stability, tear secretion, and reduce ocular surface damage for dry eye patients.
基金Supported by the Natural Science Foundation of Zhejiang Province(No.LY 16H 120002)Zhejiang Province Medical Platform Program Grant(No.2013RCB008)
文摘Dear sir,I am Dr Zhi-Qing Chen,from the Department of Ophthalmology of the Second Affiliated Hospital of Zhejiang University in Hangzhou,Zhejiang Province,China.I write to present two cases of neovascular age-related macular degeneration(AMD)occurred retinal pigment epithelium(RPE)tears after different treatment.RPE tear is a rare complication of neovascular AMD,
基金Supported by the National Natural Science Foundation of China(No.81300798)Natural Science Foundation of Hunan Province(No.2018JJ3737)。
文摘AIM:To explore the ocular features of corona virus disease(COVID)-19 and severe acute respiratory syndrome coronavirus(SARS-CoV)-2 detection in tears and conjunctival scrapes in non-severe COVID-19 patients.METHODS:This is a multicenter observational clinical study with no intervention conducted from Jan 25th to March 1st,2020.Clinical data and samples of tears and conjunctival scraping were collected in consecutive laboratory-confirmed,non-severe COVID-19 patients from three hospitals.COVID-19 virus was analyzed by real-time reverse transcriptase polymerase chain reaction(RT-PCR)kits.RESULTS:Totally 255 laboratory-confirmed,non-severe COVID-19 patients were recruited for ocular manifestation investigation.Of them,54.9%were females,with a mean age of 49.4 y.None of the patients has evidence of uveitis;11 patients(4.3%)complained of mild asthenopia;2(0.8%)had mild conjunctival congestion and serous secretion.Twenty-five of them had performed tears and conjunctival scrape for COVID-19 virus detection,with 4 yield possible positive results in the nucleoprotein gene.One of them were asymptomatic with normal chest CT and positive pharyngeal swab result.CONCLUSION:Ocular manifestations are neither common nor specific in non-severe COVID-19 patients.Meanwhile,COVID-19 virus nucleotides can be detected in the tears and conjunctival scrape samples,warranting further research on the transmissibility by the ocular route.
文摘Adams disease is the consequence of overly active transient receptor potential cation channels (TRP). This case report presents a patient suffering from multiple vascular problems and may provide new insights into the causes of venous problems. Endothelial and smooth muscle cells in veins contain TRP. These channels when activated excessively result in calcium accumulation, oxygen radical formation and apoptosis of endothelial and smooth muscle cells. The death of critical cells in vein valves, may lead to varicose veins. The loss of endothelial cells in venules may lead to retinal tears. Damage to vein walls may lead to a deep vein thrombosis. Transient receptor potential cation channels may be new drug targets of interest in the treatment or prevention of these conditions.
文摘As restorative dentists, we are faced everyday with decisions about which impression materials and techniques should be used when restoring teeth. The challenge becomes bigger when the patients present with open gingival embrasures, the dreaded “black triangles”, which tops the list of dentist frustration while taking the impression and after preparation of veneers, crowns, bridges, etc. The technique described offers an option to avoid problems related to impressions locking in gingival embrasures and tearing on removal.
文摘Perineal tears are one of the most common complications of vaginal births and may cause discomfort and pain long time after childbirth. Visual and digital examination of perineal tears is the most common way to assess and classify a perineal tear. Recent research indicates that many tears diagnosed are misclassified. The aim of this systematic literature review was to outline research that investigates healthcare professionals’ clinical knowledge in assessment and classification of perineal tears in connection with childbirth. Searches were performed in PubMed and CINAHL. Six studies on the topic were identified and ?used to collect data for questionnaires. An integrative review was used in the analysis. Poor knowledge in perineal anatomy and lack of training in clinical assessment and classification of perineal trauma was evident among both physicians and midwives. These findings indicate that healthcare providers lack adequate knowledge and that they make incorrect assessments and errors in classification of perineal tears. The training in assessment and classification is crucial. Midwives are in a unique position to improve the standard of care in this field since they are often the first and many times the only to assess the injury.
