BACKGROUND The incidence and mortality of colorectal cancer(CRC)are among the highest in the world,and its occurrence and development are closely related to tumor neovascularization.When the balance between pigment ep...BACKGROUND The incidence and mortality of colorectal cancer(CRC)are among the highest in the world,and its occurrence and development are closely related to tumor neovascularization.When the balance between pigment epithelium-derived factors(PEDF)that inhibit angiogenesis and vascular endothelial growth factors(VEGF)that stimulate angiogenesis is broken,angiogenesis is out of control,resulting in tumor development.Therefore,it is very necessary to find more therapeutic targets for CRC for early intervention and later treatment.AIM To investigate the expression and significance of PEDF,VEGF,and CD31-stained microvessel density values(CD31-MVD)in normal colorectal mucosa,adenoma,and CRC.METHODS In this case-control study,we collected archived wax blocks of specimens from the Digestive Endoscopy Center and the General Surgery Department of Chengdu Second People's Hospital from April 2022 to October 2022.Fifty cases of specimen wax blocks were selected as normal intestinal mucosa confirmed by electronic colonoscopy and concurrent biopsy(normal control group),50 cases of specimen wax blocks were selected as colorectal adenoma confirmed by electronic colonoscopy and pathological biopsy(adenoma group),and 50 cases of specimen wax blocks were selected as CRC confirmed by postoperative pathological biopsy after inpatient operation of general surgery(CRC group).An immunohistochemical staining experiment was carried out to detect PEDF and VEGF expression in three groups of specimens,analyze their differences,study the relationship between the two and clinicopathological factors in CRC group,record CD31-MVD in the three groups,and analyze the correlation of PEDF,VEGF,and CD31-MVD in the colorectal adenoma group and the CRC group.The F test or adjusted F test is used to analyze measurement data statistically.Kruskal-Wallis rank sum test was used between groups for ranked data.The chi-square test,adjusted chi-square test,or Fisher's exact test were used to compare the rates between groups.All differences between groups were compared using the Bonferroni method for multiple comparisons.Spearman correlation analysis was used to test the correlation of the data.The test level(α)was 0.05,and a two-sided P<0.05 was considered statistically significant.RESULTS The positive expression rate and expression intensity of PEDF were gradually decreased in the normal control group,adenoma group,and CRC group(100%vs 78%vs 50%,χ^(2)=34.430,P<0.001;++~++vs+~++vs-~+,H=94.059,P<0.001),while VEGF increased gradually(0%vs 68%vs 96%,χ^(2)=98.35,P<0.001;-vs-~+vs++~+++,H=107.734,P<0.001).In the CRC group,the positive expression rate of PEDF decreased with the increase of differen-tiation degree,invasion depth,lymph node metastasis,distant metastasis,and TNM stage(χ^(2)=20.513,4.160,5.128,6.349,5.128,P<0.05);the high expression rate of VEGF was the opposite(χ^(2)=10.317,13.134,17.643,21.844,17.643,P<0.05).In the colorectal adenoma group,the expression intensity of PEDF correlated negatively with CD31-MVD(r=-0.601,P<0.001),whereas VEGF was not significantly different(r=0.258,P=0.07).In the CRC group,the expression intensity of PEDF correlated negatively with the expression intensity of CD31-MVD and VEGF(r=-0.297,P<0.05;r=-0.548,P<0.05),while VEGF expression intensity was positively related to CD31-MVD(r=0.421,P=0.002).CONCLUSION It is possible that PEDF can be used as a new treatment and prevention target for CRC by upregulating the expression of PEDF while inhibiting the expression of VEGF.展开更多
In quantum computation and quantum information processing, the manipulation and engineering of quantum systems to suit certain purposes are an ongoing task. One such example is quantum state transfer(QST), an essentia...In quantum computation and quantum information processing, the manipulation and engineering of quantum systems to suit certain purposes are an ongoing task. One such example is quantum state transfer(QST), an essential requirement for both quantum communication and large-scale quantum computation. Here we engineer a chain of four superconducting qubits with tunable couplers to realize the perfect state transfer(PST) protocol originally proposed in quantum spin networks and successfully demonstrate the efficient transfer of an arbitrary single-qubit state from one end of the chain to the other,achieving a high fidelity of 0.986 in just 25 ns. This demonstrated QST is readily to extend to larger chain and multi-node configurations, thus serving as a desirable tool for scalable quantum information processing.展开更多
BACKGROUND Acute leukemia in newborns is also known as neonatal or congenital leukemia(CL)and is a rare disease with an incidence rate of 1-5 per 1000000 live births.After birth,infants with CL exhibit infiltrative cu...BACKGROUND Acute leukemia in newborns is also known as neonatal or congenital leukemia(CL)and is a rare disease with an incidence rate of 1-5 per 1000000 live births.After birth,infants with CL exhibit infiltrative cutaneous nodules,hepatosplenomegaly,thrombocytopenia,and immature leukocytes in the peripheral blood.These symptoms are frequently accompanied by congenital abnormalities including trisomy 21,trisomy 9,trisomy 13,or Turner syndrome.Despite significant advances in disease management,the survival rate is approximately 25%at 2 years.CASE SUMMARY Here,we document a case of trisomy 21-related acute myeloid leukemia(AML)in a female neonate.The baby was sent to the neonatal intensive care unit because of anorexia,poor responsiveness,and respiratory distress.She was diagnosed with AML based on bone marrow aspiration and immunophenotyping.Genetic sequencing identified a mutation in the GATA1 gene.After receiving the diagnosis,the parents decided against medical care for their child,and the baby died at home on day 9 after birth.CONCLUSIONS The newborn infant was diagnosed with trisomy 21-related AML.Genetic sequencing identified a mutation in the GATA1 gene.The parents abandoned medical treatment for their infant after receiving the diagnosis,and the infant died at home on the 9th day after birth.展开更多
目的比较靶控输注瑞芬太尼和舒芬太尼对老年患者行腹腔镜胃癌根治术麻醉恢复的质量。方法选取2016年9月-2018年12月该院腹腔镜胃癌根治术患者84例,随机分为舒芬太尼组(n=42)和瑞芬太尼组(n=42)。两组患者应用靶控输注舒芬太尼和瑞芬太...目的比较靶控输注瑞芬太尼和舒芬太尼对老年患者行腹腔镜胃癌根治术麻醉恢复的质量。方法选取2016年9月-2018年12月该院腹腔镜胃癌根治术患者84例,随机分为舒芬太尼组(n=42)和瑞芬太尼组(n=42)。两组患者应用靶控输注舒芬太尼和瑞芬太尼为基础的麻醉。记录并比较两组患者唤醒时间、拔管时间、定向力恢复时间、生命体征、应激反应、T细胞亚群分布及不良反应发生率。结果两组患者定向力恢复时间差异无统计学意义(P>0.05)。舒芬太尼组的清醒和拔管时间明显短于瑞芬太尼组,差异均有统计学意义(P<0.05)。舒芬太尼组麻醉结束、麻醉诱导后和麻醉前的心率(HR)、平均动脉压(MAP)和脉搏血氧饱和度(SpO2)比较,差异均无统计学意义(P>0.05),而瑞芬太尼组麻醉结束、麻醉诱导后和麻醉前的HR、MAP和SpO2比较,差异均有统计学意义(P<0.05)。舒芬太尼组在麻醉后、麻醉结束、麻醉结束24 h和麻醉结束72 h 4个时间点,血葡萄糖(GLU)、皮质醇(Cor)、白细胞介素-6(IL-6)和C反应蛋白(CRP)的浓度均明显低于瑞芬太尼组,CD3^+、CD4^+和CD8^+及CD4+/CD8^+明显高于瑞芬太尼组,瑞芬太尼组麻醉不良反应发生率明显高于舒芬太尼组,差异有统计学意义(P<0.05)。结论对于接受腹腔镜胃癌根治术的老年患者,靶控输注舒芬太尼为基础的麻醉具有麻醉过程平稳、应激反应小、抑制细胞免疫轻和不良反应少等优点,值得临床推广。展开更多
AIM: To analyze the difference of intestinal microbial community diversity between healthy and (S. enteritidis) orally infected ducklings.METHODS: Enterobacterial Repetitive Intergenic Consensus (ERIC)-PCR was applied...AIM: To analyze the difference of intestinal microbial community diversity between healthy and (S. enteritidis) orally infected ducklings.METHODS: Enterobacterial Repetitive Intergenic Consensus (ERIC)-PCR was applied to analyze the intestinal microbial community diversity and dynamic change including duodenum, jejunum, ileum, cecum and rectum from healthy ducklings and 7-day-old ducklings after oral infection with S. enteritidis at different time points.RESULTS: The intestinal microbial community of the control healthy ducklings was steady and the ERIC-PCR band numbers of the control healthy ducklings were the least with rectum and were the most with caecum. ERIC-PCR bands of orally inoculated ducklings did not obviously change until 24 h after inoculation (p.i.). The numbers of the ERIC-PCR bands gradually decreased from 24 h to 72 h p.i., and then, with the development of disease, the band numbers gradually increased until 6 d p.i. The prominent bacteria changed because of S. enteritidis infection and the DNAstar of staple of ERIC-PCR showed that aerobe and facultative aerobe (Escherichia coli, Shigella, Salmonella) became preponderant bacilli in the intestine of orally infected ducklings with SE.CONCLUSION: This study has provided significant data to clarify the intestinal microbial community diversity and dynamic change of healthy and S. enteritidis orally infected ducklings, and valuable insight into the pathogenesis of S. enteritidis infection in both human and animals.展开更多
Three new humulane-type sesquiterpenes,antrodols A–C(1–3),were isolated from cultures of the fungus Antrodiella albocinnamomea.Their structures were elucidated on the basis of extensive spectroscopic analysis.Antrod...Three new humulane-type sesquiterpenes,antrodols A–C(1–3),were isolated from cultures of the fungus Antrodiella albocinnamomea.Their structures were elucidated on the basis of extensive spectroscopic analysis.Antrodols A–C(1–3)are first examples of humulane-type sesquiterpenes isolated from cultures of higher fungi,and antrodol A(1)was the first report of humulane-type sesquiterpene with a methyl rearranged at C-3.All compounds were evaluated in the enzyme inhibition assay against two protein-tyrosine phosphatases(PTPs):MEG2 and PTP1Bc.展开更多
BACKGROUND Extremely premature infants have poor vascular conditions.Operators often choose deep veins such as the femoral vein and axillary vein to peripherally insert central catheters,and these vessels are often ac...BACKGROUND Extremely premature infants have poor vascular conditions.Operators often choose deep veins such as the femoral vein and axillary vein to peripherally insert central catheters,and these vessels are often accompanied by arteries;thus,it is easy to mistakenly enter the artery.CASE SUMMARY The case of an extremely premature infant(born at gestational age 28+3)in whom the left upper extremity artery was accidentally entered during peripheral puncture of the central venous catheter is reported.On the 19th day of hospitalization,the index finger,middle finger and ring finger of the left hand were rosy,the left radial artery and brachial artery pulse were palpable,the recovery was 95%,and the improvement was obvious.At discharge 42 d after admission,there was no abnormality in fingertip activity during the follow-up period.CONCLUSION Arterial embolization in preterm infants requires an individualized treatment strategy combined with local anticoagulation and 2%nitroglycerin ointment for local tissue damage caused by arterial embolism in the upper limb.Continuous visualization of disease changes using image visualization increases the likelihood of a good outcome.展开更多
Two new drimane sesquiterpenoids(1 and 2),as well as five known compounds(3-7),were isolated from the basidiomycete Trichaptum biforme.The structures of new compounds were elucidated by extensive spectroscopic methods...Two new drimane sesquiterpenoids(1 and 2),as well as five known compounds(3-7),were isolated from the basidiomycete Trichaptum biforme.The structures of new compounds were elucidated by extensive spectroscopic methods,and the known compounds were identified by comparing their spectroscopic data with those reported in the literature.The cytotoxicities results against five human cancer cell lines of compounds 1 and 2 were negligible.展开更多
Superconducting nanowire single-photon detectors(SNSPDs) have attracted considerable attention owing to their excellent detection performance;however, the underlying physics of the detection process is still unclear.I...Superconducting nanowire single-photon detectors(SNSPDs) have attracted considerable attention owing to their excellent detection performance;however, the underlying physics of the detection process is still unclear.In this study, we investigate the wavelength dependence of the intrinsic detection efficiency(IDE) for NbN SNSPDs.We fabricate various NbN SNSPDs with linewidths ranging from 30 nm to 140 nm.Then, for each detector, the IDE curves as a function of bias current for different incident photon wavelengths of 510–1700 nm are obtained.From the IDE curves, the relations between photon energy and bias current at a certain IDE are extracted.The results exhibit clear nonlinear energy–current relations for the NbN detectors, indicating that a detection model only considering quasiparticle diffusion is unsuitable for the meander-type NbN-based SNSPDs.Our work provides additional experimental data on SNSPD detection mechanism and may serve as an interesting reference for further investigation.展开更多
BACKGROUND Pulmonary hypertension(PH)is a severe complication of bronchopulmonary dysplasia(BPD)in premature neonates and is closely related to prognosis.However,there is no effective and safe treatment for PH due to ...BACKGROUND Pulmonary hypertension(PH)is a severe complication of bronchopulmonary dysplasia(BPD)in premature neonates and is closely related to prognosis.However,there is no effective and safe treatment for PH due to BPD in infants.Successful treatment for cases of BPD-associated PH with Tadalafil combined with bosentan is rare.This case may make a significant contribution to the literature because PH is difficult to manage as a serious complication of BPD in preterm infants.Mortality is high,especially when it is complicated by heart failure.CASE SUMMARY An extremely premature neonate with a gestational age of 26+5 wk and birth weight of 0.83 kg was diagnosed with BPD associated with PH;oral sildenafil did not improve the PH.The infant experienced sudden cardiac arrest and serious heart failure with severe PH.After a series of treatments,including cardiopulmonary resuscitation,mechanical ventilation,and inhaled nitric oxide(iNO),the respiratory and circulatory status improved but the pulmonary artery pressure remained high.Then oral sildenafil was replaced with oral tadalafil and bosentan;pulmonary artery pressure improved,and the infant recovered at our hospital.After 2 years of follow-up,she is in good condition,without any cardiovascular complications.CONCLUSION INO can effectively improve the respiratory and circulatory status of infants with PH associated with premature BPD.B-type natriuretic peptide should be routinely measured during hospitalization to evaluate the risk and prognosis of BPD-associated PH in preterm infants.Tadalafil combined with bosentan for the treatment of PH associated with premature BPD was better than sildenafil in this case.Further studies are needed to explore the efficacy and safety of different vasodilators in the treatment of PH associated with premature BPD.展开更多
Superconducting nanowire single-photon detectors(SNSPDs) are typical switching devices capable of detecting single photons with almost 100% detection efficiency. However, they cannot determine the exact number of inci...Superconducting nanowire single-photon detectors(SNSPDs) are typical switching devices capable of detecting single photons with almost 100% detection efficiency. However, they cannot determine the exact number of incident photons during a detection event. Multi-pixel SNSPDs employing multiple read-out channels can provide photon number resolvability(PNR), but they require increased cooling power and costly multi-channel electronic systems. In this work, a single-flux quantum(SFQ) circuit is employed, and PNR based on multi-pixel SNSPDs is successfully demonstrated. A multi-input magnetically coupled DC/SFQ converter(MMD2 Q) circuit with a mutual inductance M is used to combine and record signals from a multi-pixel SNSPD device. The designed circuit is capable of discriminating the amplitude of the combined signals in accuracy of Φ_(0)/M with Φ_(0) being a single magnetic flux quantum. By employing the MMD2 Q circuit,the discrimination of up to 40 photons can be simulated. A 4-parallel-input MMD2 Q circuit is fabricated, and a PNR of3 is successfully demonstrated for an SNSPD array with one channel reserved for the functional verification. The results confirm that an MMD2 Q circuit is an effective tool for implementing PNR with multi-pixel SNSPDs.展开更多
Five new 5,6-seco-tremulane sesquiterpenoids(1-5),as well as three known analogues(6-8),were isolated from the basidiomycete Conocybe siliginea.The structures of new compounds were elucidated by extensive spectroscopi...Five new 5,6-seco-tremulane sesquiterpenoids(1-5),as well as three known analogues(6-8),were isolated from the basidiomycete Conocybe siliginea.The structures of new compounds were elucidated by extensive spectroscopic methods.The known compounds were identified by comparing their spectroscopic data with those reported in the literature.展开更多
Objective To investigate the clinical value of intravenous lidocaine in reducing CRBD in male patients who need catheterization after general anesthesia.Methods A total of 210 male patients who underwent elective gene...Objective To investigate the clinical value of intravenous lidocaine in reducing CRBD in male patients who need catheterization after general anesthesia.Methods A total of 210 male patients who underwent elective general anesthesia in our hospital from May 2017 to April 2018 were selected.Random number table method was used to divide into the lidocaine group(1.5 mg?kg-1 of intravenous lidocaine infusion during anesthesia induction,and continuous intravenous infusion of lidocaine 2 mg?kg-1?h-1 after intubation),Dexmedetomidine group(0.5μg?kg-1 of dexmedetomidine intravenously during anesthesia induction,continuous intravenous infusion of dexmedetomidine 0.4μg?kg-1?h-1 after intubation).Control group(intravenous saline infusion during anesthesia induction,continuous intravenous infusion of the same amount of saline after intubation),70 cases in each group.All three groups were placed in the bladder with a 16F comfortable urethral catheter lubricated with paraffin oil.The amount of sufentanil used during the operation,the amount of sufentanil used after surgery,and the CRBD score and VAS at different time points after extubation were compared.Scoring,HR,SBP.Results T1 to T4,the CRBD scores of the lidocaine group were lower than those of the dexmedetomidine group and the control group(P<0.05).The VAS scores of the lidocaine group were lower than those of the control group(P<0.05),the CRBD score and VAS score of the dexmedetomidine group were lower than those of the control group(P<0.05);From T0 to T4,the differences in HR and SBP between the three groups were not statistically significant(P>0.05).Conclusion Lidocaine administration in male patients requiring catheterization after general anesthesia can significantly reduce the incidence of CRBD.展开更多
With the rapid expansion of hydropower projects, Construction safety problem has become one of the bottlenecks for the development of hydropower industry. Combined with the construction of the diversion channel projec...With the rapid expansion of hydropower projects, Construction safety problem has become one of the bottlenecks for the development of hydropower industry. Combined with the construction of the diversion channel project of Guan Yinyan hydropower station, from the point of view of construction traffic safety, based on the result of the FAHP model, factors which influence the construction safety of the diversion channel project of Guan Yinyan hydropower station have been found, relative measures focuses on the approach to eliminate hazards and guarantee construction safety have been elaborated.展开更多
Objective:To explore the therapeutic mechanism of microporous sheep acellular dermal matrix(ADM)combined with human umbilical cord mesenchymal stem cell(hUCMSC)to promote the healing of full-thickness skin defect.Meth...Objective:To explore the therapeutic mechanism of microporous sheep acellular dermal matrix(ADM)combined with human umbilical cord mesenchymal stem cell(hUCMSC)to promote the healing of full-thickness skin defect.Methods:hUCMSC was co-cultured on microporous sheep ADM to form composite biological dressings.Seventy-two nude mice were selected to make full-thickness skin injury models and randomly divided into 3 groups(hUCMSC+microporous sheep ADM group,sheep ADM group and iodophor gauze group),with 24 mice in each group.The wound healing rate of each group was detected at 14 d,21 d and 28 d after operation,qRT-PCR technique was used to detect the expression of Bax and Bcl-2 in the wound tissues,and the immunohistochemical staining technique was used to detect the expression of Collagen I and vascular endothelial growth factor(VEGF).Data were analyzed with one-way ANOVA and t test.Results:At 14 d after operation,the wound healing rate of the hUCMSC+microporous sheep ADM group was(65.34±14.72)%,which was significantly higher than that of the iodophor gauze group[(37.54±10.21)%],and higher than that of the sheep ADM group[(49.08±11.16)%],the differences were statistically significant(t=19.52,14.72;p<.05).With the gradual healing of the wound,at 28 d after operation,the wound healing rate of the hUCMSC+microporous sheep ADM group was(98.63±15.41)%,which was significantly higher than that of the iodophor gauze group[(81.74±16.27)%],and higher than that of the sheep ADM group[(63.47±14.80)%],the differences were statistically significant(t=-16.42,20.35;p<.05).The expression of Bax in the wound tissues of the hUCMSC+microporous sheep ADM group was significantly reduced,especially at 21 d after operation,the expression level was 0.25±0.06,which was significantly lower than the iodophor gauze group(0.53±0.16)and the sheep ADM group(0.41±0.12),the differences were statistically significant(t=3.52,-2.83;p<.05).The expression of Bcl-2 in the wound tissues of the hUCMSC+microporous sheep ADM group was significantly higher than those of the other two groups,especially at 21 d after operation,the expression level was 0.63±0.19,which was significantly higher than the iodophor gauze group(0.34±0.09)and the sheep ADM group(0.46±0.13),the differences were statistically significant(t=5.31,-6.07;p<.05).Immunohistochemical detection showed that the expression of Collagen I and VEGF in the hUCMSC+microporous sheep ADM group was slightly more than that of the sheep ADM group and the iodophor gauze group,but the effect was not remarkable.Conclusions:hUCMSC+microporous sheep ADM composite dressing can promote the healing of the full-thickness skin injury and reduce the production of apoptotic cells by carrying hUCMSC.展开更多
To realize the application of the floating offshore wind turbine(FOWT)from deep to relatively shallow waters,a new concept of multi-column floating wind turbine platform with low center of gravity(CG)is designed and v...To realize the application of the floating offshore wind turbine(FOWT)from deep to relatively shallow waters,a new concept of multi-column floating wind turbine platform with low center of gravity(CG)is designed and validated.The multi-column low CG platform is designed to support a 6MW wind turbine class and operated at a water depth of 50m in the South China Sea.The frequency domain software WADAM and time domain software NREL-FAST are used to simulate coupled dynamic responses of the floating wind turbine system with second-order wave loads considering.The dynamic behaviors of multi-column low CG FOWT system under normal operation and parked conditions are presented.The influence of second-order wave force on the motion responses of the multi-column platform,fore-aft force and moment of the tower base and mooring force are researched respectively.The results demonstrate that the coupled dynamic responses at rated operating condition and extreme condition meet the normal operating requirements and extreme survival requirements of FOWT system in the shallow water(50m)of South China Sea.In addition,it is found that,the wave frequency response gradually replaces the second-order low frequency response as the main influencing factor of the coupled dynamic response of the FOWT system with the increasing severity of the sea states.However,in general,the magnitude of second-order low frequency response increases with the increasing severity of the design load case.Thus,in the subsequent design of the shallow water FOWT system,the second-order effects should be paid enough attention.展开更多
ObjectiveTo explore the clinical effectiveness of xingnao kaiqiao (regaining consciousness and opening orifice) acupuncture therapy for patients with acute ischemic stroke, and establish a prediction model for prognos...ObjectiveTo explore the clinical effectiveness of xingnao kaiqiao (regaining consciousness and opening orifice) acupuncture therapy for patients with acute ischemic stroke, and establish a prediction model for prognosis for the target population through Logistic regression analysis.MethodsNinety-six patients with acute ischemic stroke were randomly assigned to either an ozone therapy group or an ozone therapy plus xingnao kaiqiao acupuncture group (OA group) with a 1:1 ratio. The patients in the ozone group was treated with ozone therapy, and those in the OA group were treated with acupuncture at Nèiguān (内关PC6), Shuĭgōu (水沟GV26), Sānyīnjiāo (三阴交SP6), lower Jíquán (下极泉Extra, lower HT1), Wĕizhōng (委中BL40) and Chĭzé (尺泽LU5) on the basis of the treatment as the ozone therapy group. The treatment was given once daily for 7 days as a session and 3 consecutive sessions were required. Before treatment and 48 h after treatment, the serological indicators (interleukin-6 [IL-6], tumor necrosis factor-α [TNF-α] and hypersensitive C-reactive protein [hs-CRP]) were tested. Using the National Institute of Health stroke scale (NIHSS) score and Montreal cognitive assessment (MoCA) score, the neurological and cognitive functions of patients were assessed. The clinical efficacy was evaluated with the modified Rankin scale, and the incidence of adverse effects was analyzed statistically in two groups. The multivariate Logistic regression analysis was adopted to detect the risk factors of the prognosis in patients and the nomographic prediction model was established.Results(1) clinical therapeutic effect: after treatment, the levels of IL-6, TNF-α and Hs-CRP in the OA group were significantly lower than that in the ozone group (all P < 0.05). After treatment, compared with the ozone therapy group, NIHSS score was lower and the scores of BI and MoCA were significantly higher in the OA group (all P < 0.05). The total effective rate of the OA group was 91.67%, higher than that of the ozone therapy group (62.50%, P < 0.05). The incidence of adverse effects in the OA group was lower when compared with that in the ozone group (P < 0.05);(2) establishment of prediction model for prognosis: age, history of diabetes, cardiogenic cerebral embolism, high density lipoprotein-cholesterol (HDL-C), white blood cell (WBC) and treatment methods were independent risk factors of the unfavorable prognosis for the patients with acute stroke. The established model had sound accuracy for prediction of prognosis.ConclusionXingnao kaiqiao acupuncture was effective on acute ischemic stroke, and the prognosis of this therapy was increased significantly when combined with the ozone therapy. The preventive measures should be set up for patients with risk factors, e.g. advanced age, diabetes, cardiogenic cerebral embolism, low HDL-C and abnormal WBC, in order to further reduce the risk of unfavorable prognosis in patients with acute stroke.展开更多
Dielectric relaxation spectroscopy(DRS) of poly(ε-caprolactone) with different draw ratios showed that the mobility of polymer chains in the amorphous part decreases as the draw ratio increases. The activation energy...Dielectric relaxation spectroscopy(DRS) of poly(ε-caprolactone) with different draw ratios showed that the mobility of polymer chains in the amorphous part decreases as the draw ratio increases. The activation energy of the α process, which corresponds to the dynamic glass transition, increases upon drawing. The enlarged gap between the activation energies of the α process and the β process results in a change of continuity at the crossover between the high temperature a process and the α and β processes. At low drawing ratios the a process connects with the β process, while at the highest drawing ratio in our measurements, the a process is continuous with the αprocess. This is consistent with X-ray diffraction results that indicate that upon drawing the polymer chains in the amorphous part align and densify upon drawing. As the draw ratio increases, the α relaxation broadens and decreases its intensity, indicating an increasing heterogeneity. We observed slope changes in the α traces, when the temperature decreases below that at which τα≈ 1 s. This may indicate the glass transition from the ‘rubbery' state to the non-equilibrium glassy state.展开更多
Background:This study was designed to determine whether the occurrence of clubfoot follows a seasonal pattern in neonates from eastern and south-eastern China and to speculate the potential etiology of clubfoot.Method...Background:This study was designed to determine whether the occurrence of clubfoot follows a seasonal pattern in neonates from eastern and south-eastern China and to speculate the potential etiology of clubfoot.Methods:We reviewed 239 neonates with clubfeet during a period of 4 years as well as the monthly neonatal population of the Sixth National Population Census.Seasonal variations in terms of month of birth and severity were analyzed.Results:The incidence of clubfoot in neonates from eastern and south-eastern China showed seasonal variations,and the incidence was higher in autumn with a reference to the average birth rate in this corresponding area.No signifi cant difference was found in severity of clubfoot.Conclusion:This seasonal pattern is of signifi cant value to further understanding the etiology and pathogenesis of clubfoot in the corresponding area of China.展开更多
基金The study was approved by the Ethics Committee of the Second People's Hospital of Chengdu.
文摘BACKGROUND The incidence and mortality of colorectal cancer(CRC)are among the highest in the world,and its occurrence and development are closely related to tumor neovascularization.When the balance between pigment epithelium-derived factors(PEDF)that inhibit angiogenesis and vascular endothelial growth factors(VEGF)that stimulate angiogenesis is broken,angiogenesis is out of control,resulting in tumor development.Therefore,it is very necessary to find more therapeutic targets for CRC for early intervention and later treatment.AIM To investigate the expression and significance of PEDF,VEGF,and CD31-stained microvessel density values(CD31-MVD)in normal colorectal mucosa,adenoma,and CRC.METHODS In this case-control study,we collected archived wax blocks of specimens from the Digestive Endoscopy Center and the General Surgery Department of Chengdu Second People's Hospital from April 2022 to October 2022.Fifty cases of specimen wax blocks were selected as normal intestinal mucosa confirmed by electronic colonoscopy and concurrent biopsy(normal control group),50 cases of specimen wax blocks were selected as colorectal adenoma confirmed by electronic colonoscopy and pathological biopsy(adenoma group),and 50 cases of specimen wax blocks were selected as CRC confirmed by postoperative pathological biopsy after inpatient operation of general surgery(CRC group).An immunohistochemical staining experiment was carried out to detect PEDF and VEGF expression in three groups of specimens,analyze their differences,study the relationship between the two and clinicopathological factors in CRC group,record CD31-MVD in the three groups,and analyze the correlation of PEDF,VEGF,and CD31-MVD in the colorectal adenoma group and the CRC group.The F test or adjusted F test is used to analyze measurement data statistically.Kruskal-Wallis rank sum test was used between groups for ranked data.The chi-square test,adjusted chi-square test,or Fisher's exact test were used to compare the rates between groups.All differences between groups were compared using the Bonferroni method for multiple comparisons.Spearman correlation analysis was used to test the correlation of the data.The test level(α)was 0.05,and a two-sided P<0.05 was considered statistically significant.RESULTS The positive expression rate and expression intensity of PEDF were gradually decreased in the normal control group,adenoma group,and CRC group(100%vs 78%vs 50%,χ^(2)=34.430,P<0.001;++~++vs+~++vs-~+,H=94.059,P<0.001),while VEGF increased gradually(0%vs 68%vs 96%,χ^(2)=98.35,P<0.001;-vs-~+vs++~+++,H=107.734,P<0.001).In the CRC group,the positive expression rate of PEDF decreased with the increase of differen-tiation degree,invasion depth,lymph node metastasis,distant metastasis,and TNM stage(χ^(2)=20.513,4.160,5.128,6.349,5.128,P<0.05);the high expression rate of VEGF was the opposite(χ^(2)=10.317,13.134,17.643,21.844,17.643,P<0.05).In the colorectal adenoma group,the expression intensity of PEDF correlated negatively with CD31-MVD(r=-0.601,P<0.001),whereas VEGF was not significantly different(r=0.258,P=0.07).In the CRC group,the expression intensity of PEDF correlated negatively with the expression intensity of CD31-MVD and VEGF(r=-0.297,P<0.05;r=-0.548,P<0.05),while VEGF expression intensity was positively related to CD31-MVD(r=0.421,P=0.002).CONCLUSION It is possible that PEDF can be used as a new treatment and prevention target for CRC by upregulating the expression of PEDF while inhibiting the expression of VEGF.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 12034018 and 11625419)。
文摘In quantum computation and quantum information processing, the manipulation and engineering of quantum systems to suit certain purposes are an ongoing task. One such example is quantum state transfer(QST), an essential requirement for both quantum communication and large-scale quantum computation. Here we engineer a chain of four superconducting qubits with tunable couplers to realize the perfect state transfer(PST) protocol originally proposed in quantum spin networks and successfully demonstrate the efficient transfer of an arbitrary single-qubit state from one end of the chain to the other,achieving a high fidelity of 0.986 in just 25 ns. This demonstrated QST is readily to extend to larger chain and multi-node configurations, thus serving as a desirable tool for scalable quantum information processing.
基金Supported by Project of Regional Science Foundation of National Natural Science Foundation,No.82060033Project of Scientific and Technological Innovation Talent Team in Guizhou Province,No.CXTD[2021]002.
文摘BACKGROUND Acute leukemia in newborns is also known as neonatal or congenital leukemia(CL)and is a rare disease with an incidence rate of 1-5 per 1000000 live births.After birth,infants with CL exhibit infiltrative cutaneous nodules,hepatosplenomegaly,thrombocytopenia,and immature leukocytes in the peripheral blood.These symptoms are frequently accompanied by congenital abnormalities including trisomy 21,trisomy 9,trisomy 13,or Turner syndrome.Despite significant advances in disease management,the survival rate is approximately 25%at 2 years.CASE SUMMARY Here,we document a case of trisomy 21-related acute myeloid leukemia(AML)in a female neonate.The baby was sent to the neonatal intensive care unit because of anorexia,poor responsiveness,and respiratory distress.She was diagnosed with AML based on bone marrow aspiration and immunophenotyping.Genetic sequencing identified a mutation in the GATA1 gene.After receiving the diagnosis,the parents decided against medical care for their child,and the baby died at home on day 9 after birth.CONCLUSIONS The newborn infant was diagnosed with trisomy 21-related AML.Genetic sequencing identified a mutation in the GATA1 gene.The parents abandoned medical treatment for their infant after receiving the diagnosis,and the infant died at home on the 9th day after birth.
文摘目的比较靶控输注瑞芬太尼和舒芬太尼对老年患者行腹腔镜胃癌根治术麻醉恢复的质量。方法选取2016年9月-2018年12月该院腹腔镜胃癌根治术患者84例,随机分为舒芬太尼组(n=42)和瑞芬太尼组(n=42)。两组患者应用靶控输注舒芬太尼和瑞芬太尼为基础的麻醉。记录并比较两组患者唤醒时间、拔管时间、定向力恢复时间、生命体征、应激反应、T细胞亚群分布及不良反应发生率。结果两组患者定向力恢复时间差异无统计学意义(P>0.05)。舒芬太尼组的清醒和拔管时间明显短于瑞芬太尼组,差异均有统计学意义(P<0.05)。舒芬太尼组麻醉结束、麻醉诱导后和麻醉前的心率(HR)、平均动脉压(MAP)和脉搏血氧饱和度(SpO2)比较,差异均无统计学意义(P>0.05),而瑞芬太尼组麻醉结束、麻醉诱导后和麻醉前的HR、MAP和SpO2比较,差异均有统计学意义(P<0.05)。舒芬太尼组在麻醉后、麻醉结束、麻醉结束24 h和麻醉结束72 h 4个时间点,血葡萄糖(GLU)、皮质醇(Cor)、白细胞介素-6(IL-6)和C反应蛋白(CRP)的浓度均明显低于瑞芬太尼组,CD3^+、CD4^+和CD8^+及CD4+/CD8^+明显高于瑞芬太尼组,瑞芬太尼组麻醉不良反应发生率明显高于舒芬太尼组,差异有统计学意义(P<0.05)。结论对于接受腹腔镜胃癌根治术的老年患者,靶控输注舒芬太尼为基础的麻醉具有麻醉过程平稳、应激反应小、抑制细胞免疫轻和不良反应少等优点,值得临床推广。
基金The National Science &Technology Pillar Program, 2007Z06-017Program for New Century Excellent Talents in University, NCET-04-0906/NCET-06-0818+1 种基金Sichuan Province Basic Research Program, 04JY029-006-1/04JY021-100/07JY029-017Program for Key Disciplines Construction of Sichuan Province, SZD0418
文摘AIM: To analyze the difference of intestinal microbial community diversity between healthy and (S. enteritidis) orally infected ducklings.METHODS: Enterobacterial Repetitive Intergenic Consensus (ERIC)-PCR was applied to analyze the intestinal microbial community diversity and dynamic change including duodenum, jejunum, ileum, cecum and rectum from healthy ducklings and 7-day-old ducklings after oral infection with S. enteritidis at different time points.RESULTS: The intestinal microbial community of the control healthy ducklings was steady and the ERIC-PCR band numbers of the control healthy ducklings were the least with rectum and were the most with caecum. ERIC-PCR bands of orally inoculated ducklings did not obviously change until 24 h after inoculation (p.i.). The numbers of the ERIC-PCR bands gradually decreased from 24 h to 72 h p.i., and then, with the development of disease, the band numbers gradually increased until 6 d p.i. The prominent bacteria changed because of S. enteritidis infection and the DNAstar of staple of ERIC-PCR showed that aerobe and facultative aerobe (Escherichia coli, Shigella, Salmonella) became preponderant bacilli in the intestine of orally infected ducklings with SE.CONCLUSION: This study has provided significant data to clarify the intestinal microbial community diversity and dynamic change of healthy and S. enteritidis orally infected ducklings, and valuable insight into the pathogenesis of S. enteritidis infection in both human and animals.
基金National Natural Science Foundation of China(U1132607,81373289,81102346)Youth Innovation Promotion Association of CAS(2011312D11019).
文摘Three new humulane-type sesquiterpenes,antrodols A–C(1–3),were isolated from cultures of the fungus Antrodiella albocinnamomea.Their structures were elucidated on the basis of extensive spectroscopic analysis.Antrodols A–C(1–3)are first examples of humulane-type sesquiterpenes isolated from cultures of higher fungi,and antrodol A(1)was the first report of humulane-type sesquiterpene with a methyl rearranged at C-3.All compounds were evaluated in the enzyme inhibition assay against two protein-tyrosine phosphatases(PTPs):MEG2 and PTP1Bc.
文摘BACKGROUND Extremely premature infants have poor vascular conditions.Operators often choose deep veins such as the femoral vein and axillary vein to peripherally insert central catheters,and these vessels are often accompanied by arteries;thus,it is easy to mistakenly enter the artery.CASE SUMMARY The case of an extremely premature infant(born at gestational age 28+3)in whom the left upper extremity artery was accidentally entered during peripheral puncture of the central venous catheter is reported.On the 19th day of hospitalization,the index finger,middle finger and ring finger of the left hand were rosy,the left radial artery and brachial artery pulse were palpable,the recovery was 95%,and the improvement was obvious.At discharge 42 d after admission,there was no abnormality in fingertip activity during the follow-up period.CONCLUSION Arterial embolization in preterm infants requires an individualized treatment strategy combined with local anticoagulation and 2%nitroglycerin ointment for local tissue damage caused by arterial embolism in the upper limb.Continuous visualization of disease changes using image visualization increases the likelihood of a good outcome.
基金This project was supported by the National Basic Research Program of China(973 Program,2009CB522300)the National Natural Sciences Foundation of China(U1132607)Youth Innovation Promotion Association of Chinese Academy of Sciences.
文摘Two new drimane sesquiterpenoids(1 and 2),as well as five known compounds(3-7),were isolated from the basidiomycete Trichaptum biforme.The structures of new compounds were elucidated by extensive spectroscopic methods,and the known compounds were identified by comparing their spectroscopic data with those reported in the literature.The cytotoxicities results against five human cancer cell lines of compounds 1 and 2 were negligible.
基金Project supported by the National Key R&D Program of China(Grant No.2017YFA0304000)the National Natural Science Foundation of China(Grant Nos.61671438 and 61827823)+2 种基金the Science and Technology Commission of Shanghai Municipality,China(Grant No.16JC1400402)Program of Shanghai Academic/Technology Research Leader,China(Grant No.18XD1404600)the Joint Research Fund in Astronomy(Grant No.U1631240)under Cooperative Agreement between the NSFC and the Chinese Academy of Sciences
文摘Superconducting nanowire single-photon detectors(SNSPDs) have attracted considerable attention owing to their excellent detection performance;however, the underlying physics of the detection process is still unclear.In this study, we investigate the wavelength dependence of the intrinsic detection efficiency(IDE) for NbN SNSPDs.We fabricate various NbN SNSPDs with linewidths ranging from 30 nm to 140 nm.Then, for each detector, the IDE curves as a function of bias current for different incident photon wavelengths of 510–1700 nm are obtained.From the IDE curves, the relations between photon energy and bias current at a certain IDE are extracted.The results exhibit clear nonlinear energy–current relations for the NbN detectors, indicating that a detection model only considering quasiparticle diffusion is unsuitable for the meander-type NbN-based SNSPDs.Our work provides additional experimental data on SNSPD detection mechanism and may serve as an interesting reference for further investigation.
基金Supported by The Clinical Research Fund of West China Second University Hospital,Sichuan University,No.KL109(to Li J),No.KL014(to Yang XY),and No.KL075(to Shi J).
文摘BACKGROUND Pulmonary hypertension(PH)is a severe complication of bronchopulmonary dysplasia(BPD)in premature neonates and is closely related to prognosis.However,there is no effective and safe treatment for PH due to BPD in infants.Successful treatment for cases of BPD-associated PH with Tadalafil combined with bosentan is rare.This case may make a significant contribution to the literature because PH is difficult to manage as a serious complication of BPD in preterm infants.Mortality is high,especially when it is complicated by heart failure.CASE SUMMARY An extremely premature neonate with a gestational age of 26+5 wk and birth weight of 0.83 kg was diagnosed with BPD associated with PH;oral sildenafil did not improve the PH.The infant experienced sudden cardiac arrest and serious heart failure with severe PH.After a series of treatments,including cardiopulmonary resuscitation,mechanical ventilation,and inhaled nitric oxide(iNO),the respiratory and circulatory status improved but the pulmonary artery pressure remained high.Then oral sildenafil was replaced with oral tadalafil and bosentan;pulmonary artery pressure improved,and the infant recovered at our hospital.After 2 years of follow-up,she is in good condition,without any cardiovascular complications.CONCLUSION INO can effectively improve the respiratory and circulatory status of infants with PH associated with premature BPD.B-type natriuretic peptide should be routinely measured during hospitalization to evaluate the risk and prognosis of BPD-associated PH in preterm infants.Tadalafil combined with bosentan for the treatment of PH associated with premature BPD was better than sildenafil in this case.Further studies are needed to explore the efficacy and safety of different vasodilators in the treatment of PH associated with premature BPD.
基金supported by the National Key R&D Program of China (Grant No. 2017YFA0304000)the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA18000000)the Science and Technology Commission of Shanghai Municipality, China (Grant No. 18511110200)。
文摘Superconducting nanowire single-photon detectors(SNSPDs) are typical switching devices capable of detecting single photons with almost 100% detection efficiency. However, they cannot determine the exact number of incident photons during a detection event. Multi-pixel SNSPDs employing multiple read-out channels can provide photon number resolvability(PNR), but they require increased cooling power and costly multi-channel electronic systems. In this work, a single-flux quantum(SFQ) circuit is employed, and PNR based on multi-pixel SNSPDs is successfully demonstrated. A multi-input magnetically coupled DC/SFQ converter(MMD2 Q) circuit with a mutual inductance M is used to combine and record signals from a multi-pixel SNSPD device. The designed circuit is capable of discriminating the amplitude of the combined signals in accuracy of Φ_(0)/M with Φ_(0) being a single magnetic flux quantum. By employing the MMD2 Q circuit,the discrimination of up to 40 photons can be simulated. A 4-parallel-input MMD2 Q circuit is fabricated, and a PNR of3 is successfully demonstrated for an SNSPD array with one channel reserved for the functional verification. The results confirm that an MMD2 Q circuit is an effective tool for implementing PNR with multi-pixel SNSPDs.
基金the National Basic Research Program of China(973 Program,2009CB522300)the National Natural Sciences Foundation of China(U1132607)Youth Innovation Promotion Association CAS.
文摘Five new 5,6-seco-tremulane sesquiterpenoids(1-5),as well as three known analogues(6-8),were isolated from the basidiomycete Conocybe siliginea.The structures of new compounds were elucidated by extensive spectroscopic methods.The known compounds were identified by comparing their spectroscopic data with those reported in the literature.
基金Panzhihua municipal science and technology projects and financial science and technology special fund arrangement plan in 2018(No.2018CY-S-9).
文摘Objective To investigate the clinical value of intravenous lidocaine in reducing CRBD in male patients who need catheterization after general anesthesia.Methods A total of 210 male patients who underwent elective general anesthesia in our hospital from May 2017 to April 2018 were selected.Random number table method was used to divide into the lidocaine group(1.5 mg?kg-1 of intravenous lidocaine infusion during anesthesia induction,and continuous intravenous infusion of lidocaine 2 mg?kg-1?h-1 after intubation),Dexmedetomidine group(0.5μg?kg-1 of dexmedetomidine intravenously during anesthesia induction,continuous intravenous infusion of dexmedetomidine 0.4μg?kg-1?h-1 after intubation).Control group(intravenous saline infusion during anesthesia induction,continuous intravenous infusion of the same amount of saline after intubation),70 cases in each group.All three groups were placed in the bladder with a 16F comfortable urethral catheter lubricated with paraffin oil.The amount of sufentanil used during the operation,the amount of sufentanil used after surgery,and the CRBD score and VAS at different time points after extubation were compared.Scoring,HR,SBP.Results T1 to T4,the CRBD scores of the lidocaine group were lower than those of the dexmedetomidine group and the control group(P<0.05).The VAS scores of the lidocaine group were lower than those of the control group(P<0.05),the CRBD score and VAS score of the dexmedetomidine group were lower than those of the control group(P<0.05);From T0 to T4,the differences in HR and SBP between the three groups were not statistically significant(P>0.05).Conclusion Lidocaine administration in male patients requiring catheterization after general anesthesia can significantly reduce the incidence of CRBD.
文摘With the rapid expansion of hydropower projects, Construction safety problem has become one of the bottlenecks for the development of hydropower industry. Combined with the construction of the diversion channel project of Guan Yinyan hydropower station, from the point of view of construction traffic safety, based on the result of the FAHP model, factors which influence the construction safety of the diversion channel project of Guan Yinyan hydropower station have been found, relative measures focuses on the approach to eliminate hazards and guarantee construction safety have been elaborated.
文摘Objective:To explore the therapeutic mechanism of microporous sheep acellular dermal matrix(ADM)combined with human umbilical cord mesenchymal stem cell(hUCMSC)to promote the healing of full-thickness skin defect.Methods:hUCMSC was co-cultured on microporous sheep ADM to form composite biological dressings.Seventy-two nude mice were selected to make full-thickness skin injury models and randomly divided into 3 groups(hUCMSC+microporous sheep ADM group,sheep ADM group and iodophor gauze group),with 24 mice in each group.The wound healing rate of each group was detected at 14 d,21 d and 28 d after operation,qRT-PCR technique was used to detect the expression of Bax and Bcl-2 in the wound tissues,and the immunohistochemical staining technique was used to detect the expression of Collagen I and vascular endothelial growth factor(VEGF).Data were analyzed with one-way ANOVA and t test.Results:At 14 d after operation,the wound healing rate of the hUCMSC+microporous sheep ADM group was(65.34±14.72)%,which was significantly higher than that of the iodophor gauze group[(37.54±10.21)%],and higher than that of the sheep ADM group[(49.08±11.16)%],the differences were statistically significant(t=19.52,14.72;p<.05).With the gradual healing of the wound,at 28 d after operation,the wound healing rate of the hUCMSC+microporous sheep ADM group was(98.63±15.41)%,which was significantly higher than that of the iodophor gauze group[(81.74±16.27)%],and higher than that of the sheep ADM group[(63.47±14.80)%],the differences were statistically significant(t=-16.42,20.35;p<.05).The expression of Bax in the wound tissues of the hUCMSC+microporous sheep ADM group was significantly reduced,especially at 21 d after operation,the expression level was 0.25±0.06,which was significantly lower than the iodophor gauze group(0.53±0.16)and the sheep ADM group(0.41±0.12),the differences were statistically significant(t=3.52,-2.83;p<.05).The expression of Bcl-2 in the wound tissues of the hUCMSC+microporous sheep ADM group was significantly higher than those of the other two groups,especially at 21 d after operation,the expression level was 0.63±0.19,which was significantly higher than the iodophor gauze group(0.34±0.09)and the sheep ADM group(0.46±0.13),the differences were statistically significant(t=5.31,-6.07;p<.05).Immunohistochemical detection showed that the expression of Collagen I and VEGF in the hUCMSC+microporous sheep ADM group was slightly more than that of the sheep ADM group and the iodophor gauze group,but the effect was not remarkable.Conclusions:hUCMSC+microporous sheep ADM composite dressing can promote the healing of the full-thickness skin injury and reduce the production of apoptotic cells by carrying hUCMSC.
基金support from the National Natural Science Foundation of China (No.51809170 and No.12102210)State Key Laboratory of Ocean Engi-neering (No.GKZD010081)Programfor International Coopera-tion of Shanghai Science and Technology (No.18160744000).
文摘To realize the application of the floating offshore wind turbine(FOWT)from deep to relatively shallow waters,a new concept of multi-column floating wind turbine platform with low center of gravity(CG)is designed and validated.The multi-column low CG platform is designed to support a 6MW wind turbine class and operated at a water depth of 50m in the South China Sea.The frequency domain software WADAM and time domain software NREL-FAST are used to simulate coupled dynamic responses of the floating wind turbine system with second-order wave loads considering.The dynamic behaviors of multi-column low CG FOWT system under normal operation and parked conditions are presented.The influence of second-order wave force on the motion responses of the multi-column platform,fore-aft force and moment of the tower base and mooring force are researched respectively.The results demonstrate that the coupled dynamic responses at rated operating condition and extreme condition meet the normal operating requirements and extreme survival requirements of FOWT system in the shallow water(50m)of South China Sea.In addition,it is found that,the wave frequency response gradually replaces the second-order low frequency response as the main influencing factor of the coupled dynamic response of the FOWT system with the increasing severity of the sea states.However,in general,the magnitude of second-order low frequency response increases with the increasing severity of the design load case.Thus,in the subsequent design of the shallow water FOWT system,the second-order effects should be paid enough attention.
基金Supported by Research on TCM nursing technology promoting rehabilitation of apoplexy patients:YYZX2019063。
文摘ObjectiveTo explore the clinical effectiveness of xingnao kaiqiao (regaining consciousness and opening orifice) acupuncture therapy for patients with acute ischemic stroke, and establish a prediction model for prognosis for the target population through Logistic regression analysis.MethodsNinety-six patients with acute ischemic stroke were randomly assigned to either an ozone therapy group or an ozone therapy plus xingnao kaiqiao acupuncture group (OA group) with a 1:1 ratio. The patients in the ozone group was treated with ozone therapy, and those in the OA group were treated with acupuncture at Nèiguān (内关PC6), Shuĭgōu (水沟GV26), Sānyīnjiāo (三阴交SP6), lower Jíquán (下极泉Extra, lower HT1), Wĕizhōng (委中BL40) and Chĭzé (尺泽LU5) on the basis of the treatment as the ozone therapy group. The treatment was given once daily for 7 days as a session and 3 consecutive sessions were required. Before treatment and 48 h after treatment, the serological indicators (interleukin-6 [IL-6], tumor necrosis factor-α [TNF-α] and hypersensitive C-reactive protein [hs-CRP]) were tested. Using the National Institute of Health stroke scale (NIHSS) score and Montreal cognitive assessment (MoCA) score, the neurological and cognitive functions of patients were assessed. The clinical efficacy was evaluated with the modified Rankin scale, and the incidence of adverse effects was analyzed statistically in two groups. The multivariate Logistic regression analysis was adopted to detect the risk factors of the prognosis in patients and the nomographic prediction model was established.Results(1) clinical therapeutic effect: after treatment, the levels of IL-6, TNF-α and Hs-CRP in the OA group were significantly lower than that in the ozone group (all P < 0.05). After treatment, compared with the ozone therapy group, NIHSS score was lower and the scores of BI and MoCA were significantly higher in the OA group (all P < 0.05). The total effective rate of the OA group was 91.67%, higher than that of the ozone therapy group (62.50%, P < 0.05). The incidence of adverse effects in the OA group was lower when compared with that in the ozone group (P < 0.05);(2) establishment of prediction model for prognosis: age, history of diabetes, cardiogenic cerebral embolism, high density lipoprotein-cholesterol (HDL-C), white blood cell (WBC) and treatment methods were independent risk factors of the unfavorable prognosis for the patients with acute stroke. The established model had sound accuracy for prediction of prognosis.ConclusionXingnao kaiqiao acupuncture was effective on acute ischemic stroke, and the prognosis of this therapy was increased significantly when combined with the ozone therapy. The preventive measures should be set up for patients with risk factors, e.g. advanced age, diabetes, cardiogenic cerebral embolism, low HDL-C and abnormal WBC, in order to further reduce the risk of unfavorable prognosis in patients with acute stroke.
基金This work was supported in part by grants from the National Natural Science Foundation of China，Outstanding Scholar Foundation of Sichuan University，Program of Health and Family Planning Commission of Sichuan Province，Program of Science and Technology Department of Sichuan Province
基金the research programme of the Dutch Polymer Institute (DPI),project#623
文摘Dielectric relaxation spectroscopy(DRS) of poly(ε-caprolactone) with different draw ratios showed that the mobility of polymer chains in the amorphous part decreases as the draw ratio increases. The activation energy of the α process, which corresponds to the dynamic glass transition, increases upon drawing. The enlarged gap between the activation energies of the α process and the β process results in a change of continuity at the crossover between the high temperature a process and the α and β processes. At low drawing ratios the a process connects with the β process, while at the highest drawing ratio in our measurements, the a process is continuous with the αprocess. This is consistent with X-ray diffraction results that indicate that upon drawing the polymer chains in the amorphous part align and densify upon drawing. As the draw ratio increases, the α relaxation broadens and decreases its intensity, indicating an increasing heterogeneity. We observed slope changes in the α traces, when the temperature decreases below that at which τα≈ 1 s. This may indicate the glass transition from the ‘rubbery' state to the non-equilibrium glassy state.
文摘Background:This study was designed to determine whether the occurrence of clubfoot follows a seasonal pattern in neonates from eastern and south-eastern China and to speculate the potential etiology of clubfoot.Methods:We reviewed 239 neonates with clubfeet during a period of 4 years as well as the monthly neonatal population of the Sixth National Population Census.Seasonal variations in terms of month of birth and severity were analyzed.Results:The incidence of clubfoot in neonates from eastern and south-eastern China showed seasonal variations,and the incidence was higher in autumn with a reference to the average birth rate in this corresponding area.No signifi cant difference was found in severity of clubfoot.Conclusion:This seasonal pattern is of signifi cant value to further understanding the etiology and pathogenesis of clubfoot in the corresponding area of China.
