Rational design of efficient and robust earth-abundant alkaline hydrogen evolution reaction(HER)catalysts is a key factor for developing energy conversion technologies.Currently,antiperovskite nitride CuNMn_(3)has gar...Rational design of efficient and robust earth-abundant alkaline hydrogen evolution reaction(HER)catalysts is a key factor for developing energy conversion technologies.Currently,antiperovskite nitride CuNMn_(3)has garnered significant interest due to its remarkable properties such as negative/zero thermal expansion and magnetocaloric effects.However,when utilized as hydrogen evolution catalysts,it encounters large challenge resulting from excessively strong/weak interactions with adsorbed H on Mn/Cu active sites,which leads to low HER activity.In this study,we introduce an asymmetric orbital hybridization strategy in Zn-doped Cu_(1-x)Zn_(x)NMn_(3)by leveraging the localization of Zn electronic states to reconfigure the electronic structures of Cu and Mn,thereby reducing the energy barrier for water dissociation and optimizing Cu and Mn active sites for hydrogen adsorption and H_(2)production.Electrochemical evaluations reveal that Cu_(0.85)Zn_(0.15)NMn_(3)with x=0.15 demonstrates exceptional electrocatalytic activity in alkaline electrolytes.A low overpotential of 52 mV at 10 mA cm^(-2)and outstanding stability over a 150-h test period are achieved,surpassing commercial Pt/C.This research offers a novel strategy for enhancing HER performance by modulating asymmetric hybridization of electron orbitals between multiple metal atoms within a material structure.展开更多
Introduction: Choriocarcinoma is an aggressive tumor, whose incidence is 0.18 per 100,000 women between the ages of 15 and 49 years [1]. Although its prognosis has improved with the development of chemotherapy regimen...Introduction: Choriocarcinoma is an aggressive tumor, whose incidence is 0.18 per 100,000 women between the ages of 15 and 49 years [1]. Although its prognosis has improved with the development of chemotherapy regimens, the mortality rate of patients with brain metastases is reportedly 29.7% [2]. After chemotherapy, most often, the reappearance of masses in pulmonary is considered to be a sign of relapse. Case presentation: The patient was a 32-year-old Asian Chinese female who delivered a dead male infant at 33 weeks gestation. The placenta appeared to be normal. The major presentation was a haemorrhage of the vagina. The patient received combined treatment with systematic multi-agent chemotherapy and whole-brain radiation therapy at the General Hospital of Hebei Province and achieved complete remission. Two years after remission, a chest CT scan revealed a mass in the right lung that had become larger over 6 months. The patient’s serum β-human chorionic gonadotropin (β-HCG) level was normal, and the tuberculosis infected T lymphocyte spot (T-SPOT.TB) tests were positive. The patient was started on anti-tuberculosis therapy, after which the size of her right lung mass decreased. Conclusion: Lung masses after choriocarcinoma require extensive laboratory and imaging exams to exclude recurrence. This case highlights the importance of differential diagnoses of lung masses in patients with choriocarcinomas. Imaging studies, β-HCG and local lesion resection should be employed to rule out choriocarcinoma recurrence.展开更多
AIM: To investigate the correlations between serum amylase levels, intestinal permeability (IP), and pancreatic injury and to explore the mechanisms responsible for hyperamylasemia in double-balloon enteroscopy (DBE).
Post-translational modifications of cellular proteins with ubiquitin or ubiquitin-like proteins regulate many cellular processes,such as cell proliferation,differentiation,apoptosis, signal transduction,intercellular ...Post-translational modifications of cellular proteins with ubiquitin or ubiquitin-like proteins regulate many cellular processes,such as cell proliferation,differentiation,apoptosis, signal transduction,intercellular immune recognition,inflammatory response,stress response,and DNA repair.Nice4/UBAP2L is an important member in the family of ubiquitin-like proteins,and its biological function remains unknown.This study aimed to investigate the effect of UBAP2L on spinal cord injury (SCI).At first,rat bone marrow mesenchymal stem cells (BMSCs)were infected with adeno-associated virus to induce over-expression of Nice4.Subsequently,the infected BMSCs were transplanted into rats suffering from semi-sectioned SCI.The results showed that the over-expression of Nice4 significantly promoted the proliferation and differentiation of BMSCs. In addition,the transplantation of infected BMSCs into the injured area of SCI rats improved the function repair of SCI.Importantly,the immunohistochemical and hematoxylin-eosin staining and RT-PCR results showed that the number of neuronal cells,oligodendrocytes,and astrocytes was significantly increased in the injured area,along with significantly upregulated expression ofcyclin D1 and p38 mitogen-activated protein kinase (MAPK).Meanwhile,the expression of caspase 3 protein was significantly down-regulated.In conclusion,the over-expression of Nice4 gene can promote the functional recovery in SCI rats by promoting cell proliferation and inhibiting apoptosis. The results of this study indicate an alternative option for the clinical treatment of SCI.展开更多
BACKGROUND The efficacy and safety of proprotein convertase subtilisin/kexin type 9(PCSK-9) inhibitors were confirmed by several clinical trials, but its effectiveness in routine clinical practice in China has not bee...BACKGROUND The efficacy and safety of proprotein convertase subtilisin/kexin type 9(PCSK-9) inhibitors were confirmed by several clinical trials, but its effectiveness in routine clinical practice in China has not been evaluated. This study aims to describe the real world effectiveness of PCSK-9 inhibitors combined with statins compared with statins-based therapy among patients with very high risk of atherosclerotic cardiovascular disease(ASCVD).METHODS This is a multi-center observational study, enrolled patients from 32 hospitals who underwent percutaneous coronary intervention(PCI) from January to June in 2019. There are 453 patients treated with PCSK-9 inhibitors combined with statins in PCSK-9 inhibitor group and 2,610 patients treated with statins-based lipid lowering therapies in statins-based group. The lipid control rate and incidence of major adverse cardiovascular events(MACE) over six months were compared between two groups.A propensity score-matched(PSM) analysis was used to balance two groups on confounding factors. Survival analysis using Kaplan-Meier methods was applied for MACE.RESULTS In a total of 3,063 patients, 89.91% of patients had received moderate or high-intensity statins-based therapy before PCI, but only 9.47% of patients had low-density lipoprotein cholesterol(LDL-C) levels below 1.4 mmol/L at baseline. In the PSM selected patients, LDL-C level was reduced by 42.57% in PCSK-9 inhibitor group and 30.81%(P < 0.001) in statins-based group after six months. The proportion of LDL-C ≤ 1.0 mmol/L increased from 5.29% to 29.26% in PCSK-9 inhibitor group and 0.23% to 6.11% in statins-based group, and the proportion of LDL-C ≤ 1.4 mmol/L increased from 10.36% to 47.69% in PCSK-9 inhibitor group and 2.99% to 18.43% in statins-based group(P < 0.001 for both). There was no significant difference between PCSK-9 inhibitor and statins-based treatment in reducing the risk of MACE(hazard ratio = 2.52, 95% CI: 0.49-12.97, P = 0.250).CONCLUSIONS In the real world, PCSK-9 inhibitors combined with statins could significantly reduce LDL-C levels among patients with very high risk of ASCVD in China. The long-term clinical benefits for patients received PCSK-9 inhibitor to reduce the risk of MACE is still unclear and requires further study.展开更多
Background: Self-efficacy has been identified as an important determinant of youth's behavior change including physical activity(PA) participation. However, the dimensionality check of a PA self-efficacy scale has...Background: Self-efficacy has been identified as an important determinant of youth's behavior change including physical activity(PA) participation. However, the dimensionality check of a PA self-efficacy scale has rarely been conducted in China. The current study aims to examine(1) the unidimensionality of a shortened Chinese version of PA self-efficacy scale(S-PASESC);(2) the measurement invariance of S-PASESC across gender and levels of education;(3) the latent factor mean difference between gender and levels of education;(4) the direct effects of self-efficacy on PA by different gender and education levels; and(5) the comparisons of the direct effects of self-efficacy on PA across gender and education levels.Methods: The participants were 5 th through 11 th grade public school students recruited from 7 cities located in different geographic regions of China. The final data include a total of 3003 participants(49.7% boys) who have completed the scales.Results: Confirmatory factor analysis(CFA) test supported the unidimensionality of S-PASESC. The S-PASESC is invariant across gender and 3 levels of education at both configural, full metric, and full scalar levels. Findings from latent mean comparisons showed that boys reported higher PA self-efficacy than girls. Students' perceived PA self-efficacy tend to decrease from elementary to high school. Finally, self-efficacy positively related to PA by groups of different gender and education levels and the relationship between self-efficacy and PA is stronger among middle school boys than girls.Conclusion: Findings suggest S-PASESC is a valid scale for measuring Chinese students' PA self-efficacy.展开更多
BACKGROUND Adrenal primitive neuroectodermal tumor(PNET) is an extremely rare malignant tumor with poor prognosis and of neural crest origin. Herein, we report a case of adrenal PNET and summarized its clinical and pa...BACKGROUND Adrenal primitive neuroectodermal tumor(PNET) is an extremely rare malignant tumor with poor prognosis and of neural crest origin. Herein, we report a case of adrenal PNET and summarized its clinical and pathological characteristics on the basis of 16 patients reported recently.CASE SUMMARY A female patient aged 25 years presented with right lumbago for 12 mo, and preoperative computed tomography showed a huge right adrenal mass. She received tumorectomy, and post-operative pathological examination showed adrenal PNET. After surgery, she underwent adjuvant chemotherapy and was followed up 31 mo after surgery. She received brachytherapy for right paracolic and hepatic metastases. She was alive and followed up for 60 mo. In available studies, only 57.14%(4/7) and 44.44%(4/9) were positive for the expression of neuron-specific enolase and synaptophysin, respectively, although CD99 expression was found in all the patients(100%; 10/10).CONCLUSION It is concluded that adrenal PNET is very rare and highly malignant, and histology is a golden standard in its diagnosis. Surgery and adjuvant therapy is the main treatment.展开更多
Mesoscale eddies play an important role in modulating the ocean circulation.Many previous studies on the threedimensional structure of mesoscale eddies were mainly based on composite analysis,and there are few targete...Mesoscale eddies play an important role in modulating the ocean circulation.Many previous studies on the threedimensional structure of mesoscale eddies were mainly based on composite analysis,and there are few targeted observations for individual eddies.A cyclonic eddy surveyed during an oceanographic cruise in the Northwest Pacific Ocean is investigated in this study.The three-dimensional structure of this cyclonic eddy is revealed by observations and simulated by the four-dimensional variational data assimilation(4 DVAR)system combined with the Regional Ocean Modeling System.The observation and assimilation results together present the characteristics of the cyclonic eddy.The cold eddy has an obvious dual-core structure of temperature anomaly.One core is at 50–150 m and another is at 300–550 m,which both have the average temperature anomaly of approximately-3.5℃.The salinity anomaly core is between 250 m and 500 m,which is approximately-0.3.The horizontal velocity structure is axis-asymmetric and it is enhanced on the eastern side of the cold eddy.In the assimilation experiment,sea level anomaly,sea surface temperature,and in situ measurements are assimilated into the system,and the results of assimilation are close to the observations.Based on the high-resolution assimilation output results,the study also diagnoses the vertical velocity in the mesoscale eddy,which reaches the maximum of approximately 10 m/d.The larger vertical velocity is found to be distributed in the range of 0.5 to 1 time of the normalized radius of the eddy.The validation of the simulation result shows that the 4 DVAR method is effective to reconstruct the three-dimensional structure of mesoscale eddy and the research is an application to study the mesoscale eddy in the Northwest Pacific by combining observation and assimilation methods.展开更多
BACKGROUND Tenofovir disoproxil fumarate(TDF)is a prodrug of a nucleotide analogue.As an antiviral drug,TDF has been proposed in the first-line treatment of chronic hepatitis B(CHB).Qingzhong,a brand name of TDF,comme...BACKGROUND Tenofovir disoproxil fumarate(TDF)is a prodrug of a nucleotide analogue.As an antiviral drug,TDF has been proposed in the first-line treatment of chronic hepatitis B(CHB).Qingzhong,a brand name of TDF,commercialized by Jiangsu Chia-tai Tianqing Pharmaceutical Co Ltd.,and Viread,another brand name of TDF,commercialized by GlaxoSmithKline,have both been approved by the State Food and Drug Administration,China.AIM To investigate the efficacy and safety of the two TDF agents in the treatment of Chinese CHB patients.METHODS This trial was registered at ClinicalTrials.gov with the identifier number of NCT02287857.A total of 330 Chinese CHB patients,among which 232 were hepatitis B e antigen(HBeAg)-positive,were included in this 5-year-long,multicenter,double-blinded,double-dummy,randomized-controlled,noninferiority phase III trial.The participants were initially randomized into two groups:Group A(n=161),in which the participants received 300 mg Qingzhong once a day for 48 wk;and Group B,in which the participants received 300 mg Viread once a day for 48 wk.Starting from week 49,all the participants in Groups A and B received 300 mg Qingzhong once a day until the 96th week.In this study,the primary endpoint was the decrease in plasma level of hepatitis B virus(HBV)DNA at the 96th week,while the secondary endpoints were suppression of HBV replication,alanine aminotransferase(ALT)normalization,HBeAg loss,and HBeAg seroconversion rates.RESULTS For the participants with HBeAg-positive CHB,the decrease in mean HBV DNA level relative to the baseline value was comparable between Groups A and B(5.77 vs 5.73 log10 IU/mL,P>0.05)at the 96th week.In addition,similar percentages of HBeAg-positive participants in the two groups exhibited undetectable levels of HBV DNA,HBeAg loss,and HBeAg seroconversion(71.05%vs 77.97%,31.00%vs 27.27%,and 20.22%vs 15.79%,respectively,in Group A vs Group B;P>0.05).For the participants with HBeAg-negative CHB,the decrease in mean HBV DNA level relative to the baseline value was also comparable between Groups A and B(4.46 vs 4.70 log10 IU/mL,P>0.05)at the 96th week.In addition,similar percentages of HBeAg-negative participants in the two groups exhibited undetectable levels of HBV DNA(87.23%vs 94.12%in Group A vs Group B,respectively;P>0.05).Finally,similar percentages of CHB patients(HBeAg-positive or HBeAg-negative)in the two groups exhibited normalization of ALT(80.14%vs 84.57%in Group A vs Group B,respectively;P>0.05),and similar incidences of adverse events were observed(106 vs 104 in Group A vs Group B,respectively;P>0.05).CONCLUSION Both Qingzhong and Viread are effective and safe in the treatment of Chinese CHB patients according to the results of our clinical trial.展开更多
Objective:To investigate the effects of adjuvant danhong injection therapy on nerve injury and platelet activation markers in patients with acute cerebral infarction.Methods: A total of 102 patients with acute cerebra...Objective:To investigate the effects of adjuvant danhong injection therapy on nerve injury and platelet activation markers in patients with acute cerebral infarction.Methods: A total of 102 patients with acute cerebral infarction who were treated in our hospital between January 2016 and September 2017 were reviewed and divided into the routine group (n=54) who received conventional therapy and the danhong injection group who received adjuvant danhong injection therapy. The differences in the contents of nerve injury indexes in serum and platelet activation markers in peripheral blood were compared between the two groups before treatment, after 3 d of treatment and after 7 d of treatment.Results: There was no statistically significant difference in the contents of nerve injury indexes in serum and platelet activation markers in peripheral blood between the two groups before treatment. After 3 d of treatment and after 7 d of treatment, copeptin, H-FABP and NSE contents in serum of danhong injection group were lower than those of routine group whereas BDNF and bFGF contents were higher than those of routine group;CD62p, CD42b, PAC-1 and PMA contents in peripheral blood were lower than those of routine group.Conclusion: Conventional therapy combined with adjuvant danhong injection therapy can effectively reduce the degree of nerve injury and inhibit the platelet activation in patients with acute cerebral infarction.展开更多
FeAs^- single layer is tested as a simple model for LaFeAsO and BaFe2As2 based on firstprinciples calculations using generalized gradient approximation （GGA） and GGA＋U. The calculated single-layer geometric and ele...FeAs^- single layer is tested as a simple model for LaFeAsO and BaFe2As2 based on firstprinciples calculations using generalized gradient approximation （GGA） and GGA＋U. The calculated single-layer geometric and electronic structures are inconsistent with that of bulk materials. The bulk collinear antiferromagnetic ground state failed to be obtained in the FeAs^- single layer. The monotonous behavior of the Fe-As distance in z direction upon electron or hole doping is also in contrast with bulk materials. The results indicate that, in LaFeAsO and BaFe2As2, interactions between FeAs layer and other layers beyond simple charge doping are important, and a single FeAs layer may not represent a good model for Fe based superconducting materials.展开更多
BACKGROUND Entecavir(ETV)is a potent and selective nucleotide analog with significant activity against hepatitis B virus(HBV).ETV maleate is a derivative compound of ETV and was reported to have an efficacy and safety...BACKGROUND Entecavir(ETV)is a potent and selective nucleotide analog with significant activity against hepatitis B virus(HBV).ETV maleate is a derivative compound of ETV and was reported to have an efficacy and safety profile that is comparable to ETV(Baraclude)when used in Chinese patients with chronic hepatitis B(CHB)in phase III clinical trials(Clinical Trials.gov number,NCT-01926288)at weeks 48,96,and 144.AIM To investigate the antiviral potency and safety of ETV maleate at week 192 in Chinese CHB patients predominantly genotyped B or C.METHODS In this double-blind study,we randomly assigned patients to receive 0.5 mg/d ETV(Group A)or ETV maleate(Group B)(ratio,1:1),each with a placebo tablet for 48 wk.Then,all patients received open-label treatment with 0.5 mg/d ETV maleate starting at week 49.The primary efficacy endpoint was the reduction in HBV DNA levels from baseline.Secondary endpoints included the proportion of patients with undetectable HBV DNA(<20 IU/m L),serologic response,serum alanine aminotransferase(ALT)normalization and development of resistance mutations.RESULTS Two hundred eighteen patients who were hepatitis B e antigen(HBe Ag)positive and 57 who were HBe Ag negative were analyzed and predominantly presented with genotype B(49.82%)or C(48.73%).For the HBe Ag-positive CHB patients,the mean HBV DNA level decrease(6.61 Log10 IU/m L vs 6.69 Log10 IU/m L,P>0.05),viral suppression with HBV DNA<20 IU/m L(83.33%vs 79.17%,P>0.05)and HBe Ag seroconversion(28.77%vs 20.00%,P>0.05)occurred similarly between Groups A and B at week 192.However,there was a significant difference in the proportion of patients with normal ALT levels(91.14%vs 78.38%,P<0.05).For the HBe Ag-negative CHB patients,no significant difference was found between Groups A and B at week 192 in terms of reductions in HBV DNA levels from baseline(6.05 Log10 IU/m L vs 6.03 Log10 IU/m L,P>0.05),percentages of patients who achieved undetectable HBV DNA(100%vs 100%,P>0.05)and rates of ALT normalization(95.65%vs 100.00%,P>0.05).Safety and adverse event profiles were similar between Groups A and B.Two HBe Ag-positive patients in Group A and 5 in Group B developed genotypic resistance to ETV.CONCLUSION Long-term ETV maleate treatment for up to 192 wk is effective and safe in Chinese CHB patients predominantly genotyped as B or C.展开更多
In this paper,we carried out multiwavelength observations of three recurring jets on 2014November 7.The jets originated from the same region at the edge of AR 12205 and propagated along the same coronal loop.The erupt...In this paper,we carried out multiwavelength observations of three recurring jets on 2014November 7.The jets originated from the same region at the edge of AR 12205 and propagated along the same coronal loop.The eruptions were generated by magnetic reconnection,which is evidenced by continuous magnetic cancellation at the jet base.The projected initial velocity of jet2 is~402 km s^(-1).The accelerations in the ascending and descending phases of jet2 are not consistent,the former is considerably larger than the value of g_(⊙) at the solar surface,while the latter is lower than g_(⊙).There are two possible candidates of extra forces acting on jet2 during its propagation.One is the downward gas pressure from jet1when it falls back and meets with jet2.The other is the viscous drag from the surrounding plasma during the fast propagation of jet2.As a contrast,the accelerations of jet3 in the rising and falling phases are constant,implying that the propagation of jet3 is not significantly influenced by extra forces.展开更多
Objective: To investigate the effects of laparoscopic radical resection of rectal cancer on gastrointestinal hormones, visceral protein and pain stress. Methods: A total of 96 patients with rectal cancer radical resec...Objective: To investigate the effects of laparoscopic radical resection of rectal cancer on gastrointestinal hormones, visceral protein and pain stress. Methods: A total of 96 patients with rectal cancer radical resection from January 2017 to December 2017 in our hospital, were selected as the research objects, the patients were randomly divided into the observation group (48 cases) and the control group (48 cases). The observation group received laparoscopic radical resection of rectal cancer, while the control group underwent open radical resection of rectal cancer. The levels of gastrin (GAS), motilin (MTL), vasoactive intestinal peptide (VIP), transferrin (TRF), retinol binding protein (RbP), albumin (ALB), prealbumin (PRE), P substance (SP), bradykinin (BK), and prostaglandin-E2 (PGE2) were measured and compared in the two groups. Results: Before operation, there was no significant difference in GAS, MTL and VIP between the two groups. 1, 3, and 5 d after operation, the GAS, MTL and VIP of the two groups were significantly lower than those before operation, and the differences were statistically significant. 1, 3, and 5 d after operation, GAS of the observation group were (66.60±5.79) μmol/L, (71.95±6.16) μmol/L and (77.68±6.38) μmol/L respectively, MTL were (225.68±19.83) pg/mL, (253.76±21.42) pg/mL and (289.98±24.74) pg/mL, VIP were (1.99±0.42) μmol/L, (2.43±0.46) μmol/L, (2.80±0.51) μmol/L, respectively, which were higher than that of the control group at the same time, and the difference was statistically significant. Before operation, there was no significant difference in TRF, RbP, ALB and PRE levels in the two groups. 1, 3 and 5 d after operation, the TRF, RbP, ALB and PRE levels in the two groups were significantly lower than those before operation, and the differences were statistically significant. 1, 3 and 5 d after operation, TRF of the observation group were (1.64±0.33) ng/L, (1.44±0.30) ng/L, (1.46 ±0.32) ng/L, RbP were (19.05±3.85) mg/L, (21.83±4.26) mg/L and (24.54±4.45) mg/L respectively, and ALB were (31.49±2.54) ng/L, (28.21±2.05) ng/L and (28.43±1.99) ng/L, PRE were (0.20±0.06) ng/L, (0.16±0.05) ng/L, (0.15±0.05) ng/L, which were all higher than those in the control group at the same time, and the differences were statistically significant. Before operation, there was no significant difference in SP, BK and PGE2 between the two groups. 1, 3 and 5 d after operation, the SP, BK and PGE2 of the two groups were significantly higher than those before operation and the differences were statistically significant. 1, 3 and 5 d after operation, SP of the observation group was (7.31±0.87) μg/mL, (5.43±0.51) μg/mL and (3.10±0.24) μg/mL, BK was (9.53±0.80) μg/L, (7.81±0.79) μg/L and 6.30±0.53) pg/mL, and PGE2 were (152.42±14.80) pg/mL, (131.22±13.35) pg/mL, (117.86±11.95) pg/mL, which were all lower than those in the control group at the same time, and the differences were statistically significant. Conclusion: Laparoscopic radical resection of rectal cancer can help patients recover gastrointestinal function faster and cause less pain stress.展开更多
Objective: To study the changes of microelement content and erythrocyte immune function in patients with cerebral infarction complicated by pneumonia and their relationship with infection indexes. Methods: Patients wi...Objective: To study the changes of microelement content and erythrocyte immune function in patients with cerebral infarction complicated by pneumonia and their relationship with infection indexes. Methods: Patients with cerebral infarction complicated by pneumonia who were treated in Huangshi Central Hospital between April 2014 and February 2017 were selected as the infection group of the research, and patients with cerebral infarction who were treated in Huangshi Central Hospital during the same period were selected as the control group of the research. Serum was collected to determine the contents of trace elements Zn, Fe, Cu, Se and Ca as well as infection index PCT, and peripheral blood was collected to determine the erythrocyte immune function indexes. Results: Serum PCT content of infection group was greatly higher than that of control group. Serum zinc and Fe contents as well as peripheral blood RBC-ICR, RBC-C3bR, FEER, CD58 and CD59 levels of infection group were greatly lower than those of control group, FEIR level in peripheral blood was obviously higher than that of control group, and Cu, Se and Ca contents were not greatly different from those of control group;serum zinc and Fe contents as well as peripheral blood RBC-ICR, RBC-C3bR, FEER, CD58 and CD59 levels of infection group of patients with high PCT content were remarkably lower than those of patients with low PCT content, FEIR level in peripheral blood was significantly higher than that of patients with low PCT content, and Cu, Se and Ca contents were not greatly different from those of patients with low PCT content. Conclusion:The deficiency of microelements Zn and Fe as well as the weakening of erythrocyte immune function is closely related to the degree of infection in the patients with cerebral infarction complicated by pneumonia.展开更多
The status of coinfection during the national outbreak of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron BA.5.2 or BF.7 in China in the winter of 2022,which is suspected to contribute substantially...The status of coinfection during the national outbreak of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron BA.5.2 or BF.7 in China in the winter of 2022,which is suspected to contribute substantially to the overloaded severe cases,needs to be investigated.We analyzed the coinfection status of 385 severe patients infected with the Omicron variant in Guangzhou using metagenomic sequencing.We found that 317(82.3%)patients were coinfected with at least one additional pathogen(s),including bacteria(58.7%),fungi(27.1%)and viruses(73.5%).Pseudomonas aeruginosa(P.aeruginosa)(24.2%),Staphylococcus aureus(S.aureus)(14.0%),andKlebsiella pneumoniae(K.pneumonia)(13.4%)ranked as the top three coinfected bacteria.Aspergillus fumigatus(A.fumigatus)(39.5%),Pneumocystis jirovecii(P.jirovecii)(24.4%)andCanidia albicans(C.albicans)(22.1%)were the top three coinfected fungi.Epstein-Barr virus(EBV)(63.1%),Human herpesvirus 7(HHV-7)(34.8%),and Herpes simplex virus 1(HSV-1)(32.6%)were the top three coinfected viruses.Of note,the detection of multiple coinfections of potential pathogenic bacteria,fungi,and viruses,despite lacking consistent patterns,highlighted a complicated synergistic contribution to disease severity.Our study presents the most comprehensive spectrum of bacterial,fungal,and viral coinfections in Omicron-associated severe coronavirus disease 2019(COVID-19),implying that the coinfection of conditional pathogens might synergistically deteriorate the Omicron infection outcomes.展开更多
Dear Editor,The newly emerged severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron subvariants(XBB.1,EG.5 and JN.1)and sublineages have been circulating globally with superior growth advantages over othe...Dear Editor,The newly emerged severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron subvariants(XBB.1,EG.5 and JN.1)and sublineages have been circulating globally with superior growth advantages over other Omicron variants(Tamura et al.,2023).However,second-generation vaccines,including the BA.2 or BA.5 bivalent vaccine boosters,did not produce robust neutralization against the newly emerged XBB.1 or EG.5(Zou et al.,2023).Compared with variants BA.2 and BA.5,XBB.1 carries more mutations in the receptor binding domain(RBD)and exhibits significant immune evasion(Wang et al.,2023b).XBB.1 and its descendent lineages have rapidly become the dominant SARS-CoV-2 strain and are causing the next global wave of COVID-19.Therefore,it is essential to develop an updated vaccine against the newly emerged SARS-CoV-2 variants.展开更多
Nanoparticles made of different materials usually support optical resonances in the visible to near infrared spectral range,such as the localized surface plasmons observed in metallic nanoparticles and the Mie resonan...Nanoparticles made of different materials usually support optical resonances in the visible to near infrared spectral range,such as the localized surface plasmons observed in metallic nanoparticles and the Mie resonances observed in dielectric ones.Such optical resonances,which are important for practical applications,depend strongly on the morphologies of nanoparticles.Laser irradiation is a simple but effective way to modify such optical resonances through the change in the morphology of a nanoparticle.Although laser-induced shaping of metallic nanoparticles has been successfully demonstrated,it remains a big challenge for dielectric nanoparticles due to their larger Young’s modulus and smaller thermal conductivities.Here,we proposed and demonstrated a strategy for realizing controllable shaping of high-index dielectric nanoparticles by exploiting the giant optical force induced by femtosecond laser pulses.It was found that both Si and Ge nanoparticles can be lit up by resonantly exciting the optical resonances with femtosecond laser pulses,leading to the luminescence burst when the laser power exceeds a threshold.In addition,the morphologies of Si and Ge nanoparticles can be modified by utilizing the giant absorption force exerted on them and the reduced Young’s modulus at high temperatures.The shape transformation from sphere to ellipsoid can be realized by laser irradiation,leading to the blueshifts of the optical resonances.It was found that Si and Ge nanoparticles were generally elongated along the direction parallel to the polarization of the laser light.Controllable shaping of Si and Ge can be achieved by deliberately adjusting the excitation wavelength and the laser power.Our findings are helpful for understanding the giant absorption force of femtosecond laser light and are useful for designing nanoscale photonic devices based on shaped highindex nanoparticles.展开更多
基金supported by the National Key R&D Program of China(No.2021YFB2800700)National Natural Science Foundation of China(Nos.12274210,62227820,and 12174183)+1 种基金Partial support is from NSF of Jiangsu Province(No.BK20220006)the Fundamental Research Funds for the Central Universities and Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves。
文摘Rational design of efficient and robust earth-abundant alkaline hydrogen evolution reaction(HER)catalysts is a key factor for developing energy conversion technologies.Currently,antiperovskite nitride CuNMn_(3)has garnered significant interest due to its remarkable properties such as negative/zero thermal expansion and magnetocaloric effects.However,when utilized as hydrogen evolution catalysts,it encounters large challenge resulting from excessively strong/weak interactions with adsorbed H on Mn/Cu active sites,which leads to low HER activity.In this study,we introduce an asymmetric orbital hybridization strategy in Zn-doped Cu_(1-x)Zn_(x)NMn_(3)by leveraging the localization of Zn electronic states to reconfigure the electronic structures of Cu and Mn,thereby reducing the energy barrier for water dissociation and optimizing Cu and Mn active sites for hydrogen adsorption and H_(2)production.Electrochemical evaluations reveal that Cu_(0.85)Zn_(0.15)NMn_(3)with x=0.15 demonstrates exceptional electrocatalytic activity in alkaline electrolytes.A low overpotential of 52 mV at 10 mA cm^(-2)and outstanding stability over a 150-h test period are achieved,surpassing commercial Pt/C.This research offers a novel strategy for enhancing HER performance by modulating asymmetric hybridization of electron orbitals between multiple metal atoms within a material structure.
文摘Introduction: Choriocarcinoma is an aggressive tumor, whose incidence is 0.18 per 100,000 women between the ages of 15 and 49 years [1]. Although its prognosis has improved with the development of chemotherapy regimens, the mortality rate of patients with brain metastases is reportedly 29.7% [2]. After chemotherapy, most often, the reappearance of masses in pulmonary is considered to be a sign of relapse. Case presentation: The patient was a 32-year-old Asian Chinese female who delivered a dead male infant at 33 weeks gestation. The placenta appeared to be normal. The major presentation was a haemorrhage of the vagina. The patient received combined treatment with systematic multi-agent chemotherapy and whole-brain radiation therapy at the General Hospital of Hebei Province and achieved complete remission. Two years after remission, a chest CT scan revealed a mass in the right lung that had become larger over 6 months. The patient’s serum β-human chorionic gonadotropin (β-HCG) level was normal, and the tuberculosis infected T lymphocyte spot (T-SPOT.TB) tests were positive. The patient was started on anti-tuberculosis therapy, after which the size of her right lung mass decreased. Conclusion: Lung masses after choriocarcinoma require extensive laboratory and imaging exams to exclude recurrence. This case highlights the importance of differential diagnoses of lung masses in patients with choriocarcinomas. Imaging studies, β-HCG and local lesion resection should be employed to rule out choriocarcinoma recurrence.
文摘AIM: To investigate the correlations between serum amylase levels, intestinal permeability (IP), and pancreatic injury and to explore the mechanisms responsible for hyperamylasemia in double-balloon enteroscopy (DBE).
基金the National Natural Science Foundation of China(No.81271347).
文摘Post-translational modifications of cellular proteins with ubiquitin or ubiquitin-like proteins regulate many cellular processes,such as cell proliferation,differentiation,apoptosis, signal transduction,intercellular immune recognition,inflammatory response,stress response,and DNA repair.Nice4/UBAP2L is an important member in the family of ubiquitin-like proteins,and its biological function remains unknown.This study aimed to investigate the effect of UBAP2L on spinal cord injury (SCI).At first,rat bone marrow mesenchymal stem cells (BMSCs)were infected with adeno-associated virus to induce over-expression of Nice4.Subsequently,the infected BMSCs were transplanted into rats suffering from semi-sectioned SCI.The results showed that the over-expression of Nice4 significantly promoted the proliferation and differentiation of BMSCs. In addition,the transplantation of infected BMSCs into the injured area of SCI rats improved the function repair of SCI.Importantly,the immunohistochemical and hematoxylin-eosin staining and RT-PCR results showed that the number of neuronal cells,oligodendrocytes,and astrocytes was significantly increased in the injured area,along with significantly upregulated expression ofcyclin D1 and p38 mitogen-activated protein kinase (MAPK).Meanwhile,the expression of caspase 3 protein was significantly down-regulated.In conclusion,the over-expression of Nice4 gene can promote the functional recovery in SCI rats by promoting cell proliferation and inhibiting apoptosis. The results of this study indicate an alternative option for the clinical treatment of SCI.
基金supported by the China Cardiovascular Health Alliance-Advanced Fund (2019CCA-ACCESS-054)the Beijing Lisheng Cardiovascular Health Foundation Pilot Fund Key Projects。
文摘BACKGROUND The efficacy and safety of proprotein convertase subtilisin/kexin type 9(PCSK-9) inhibitors were confirmed by several clinical trials, but its effectiveness in routine clinical practice in China has not been evaluated. This study aims to describe the real world effectiveness of PCSK-9 inhibitors combined with statins compared with statins-based therapy among patients with very high risk of atherosclerotic cardiovascular disease(ASCVD).METHODS This is a multi-center observational study, enrolled patients from 32 hospitals who underwent percutaneous coronary intervention(PCI) from January to June in 2019. There are 453 patients treated with PCSK-9 inhibitors combined with statins in PCSK-9 inhibitor group and 2,610 patients treated with statins-based lipid lowering therapies in statins-based group. The lipid control rate and incidence of major adverse cardiovascular events(MACE) over six months were compared between two groups.A propensity score-matched(PSM) analysis was used to balance two groups on confounding factors. Survival analysis using Kaplan-Meier methods was applied for MACE.RESULTS In a total of 3,063 patients, 89.91% of patients had received moderate or high-intensity statins-based therapy before PCI, but only 9.47% of patients had low-density lipoprotein cholesterol(LDL-C) levels below 1.4 mmol/L at baseline. In the PSM selected patients, LDL-C level was reduced by 42.57% in PCSK-9 inhibitor group and 30.81%(P < 0.001) in statins-based group after six months. The proportion of LDL-C ≤ 1.0 mmol/L increased from 5.29% to 29.26% in PCSK-9 inhibitor group and 0.23% to 6.11% in statins-based group, and the proportion of LDL-C ≤ 1.4 mmol/L increased from 10.36% to 47.69% in PCSK-9 inhibitor group and 2.99% to 18.43% in statins-based group(P < 0.001 for both). There was no significant difference between PCSK-9 inhibitor and statins-based treatment in reducing the risk of MACE(hazard ratio = 2.52, 95% CI: 0.49-12.97, P = 0.250).CONCLUSIONS In the real world, PCSK-9 inhibitors combined with statins could significantly reduce LDL-C levels among patients with very high risk of ASCVD in China. The long-term clinical benefits for patients received PCSK-9 inhibitor to reduce the risk of MACE is still unclear and requires further study.
基金supported by a grant from the National Social Science Foundation of China (No. 13CTY031)
文摘Background: Self-efficacy has been identified as an important determinant of youth's behavior change including physical activity(PA) participation. However, the dimensionality check of a PA self-efficacy scale has rarely been conducted in China. The current study aims to examine(1) the unidimensionality of a shortened Chinese version of PA self-efficacy scale(S-PASESC);(2) the measurement invariance of S-PASESC across gender and levels of education;(3) the latent factor mean difference between gender and levels of education;(4) the direct effects of self-efficacy on PA by different gender and education levels; and(5) the comparisons of the direct effects of self-efficacy on PA across gender and education levels.Methods: The participants were 5 th through 11 th grade public school students recruited from 7 cities located in different geographic regions of China. The final data include a total of 3003 participants(49.7% boys) who have completed the scales.Results: Confirmatory factor analysis(CFA) test supported the unidimensionality of S-PASESC. The S-PASESC is invariant across gender and 3 levels of education at both configural, full metric, and full scalar levels. Findings from latent mean comparisons showed that boys reported higher PA self-efficacy than girls. Students' perceived PA self-efficacy tend to decrease from elementary to high school. Finally, self-efficacy positively related to PA by groups of different gender and education levels and the relationship between self-efficacy and PA is stronger among middle school boys than girls.Conclusion: Findings suggest S-PASESC is a valid scale for measuring Chinese students' PA self-efficacy.
基金Supported by National Natural Science Foundation of China,No.81572621Medical and Technology Intercrossing Research Foundation of Shanghai Jiaotong University,No.YG2016QN65
文摘BACKGROUND Adrenal primitive neuroectodermal tumor(PNET) is an extremely rare malignant tumor with poor prognosis and of neural crest origin. Herein, we report a case of adrenal PNET and summarized its clinical and pathological characteristics on the basis of 16 patients reported recently.CASE SUMMARY A female patient aged 25 years presented with right lumbago for 12 mo, and preoperative computed tomography showed a huge right adrenal mass. She received tumorectomy, and post-operative pathological examination showed adrenal PNET. After surgery, she underwent adjuvant chemotherapy and was followed up 31 mo after surgery. She received brachytherapy for right paracolic and hepatic metastases. She was alive and followed up for 60 mo. In available studies, only 57.14%(4/7) and 44.44%(4/9) were positive for the expression of neuron-specific enolase and synaptophysin, respectively, although CD99 expression was found in all the patients(100%; 10/10).CONCLUSION It is concluded that adrenal PNET is very rare and highly malignant, and histology is a golden standard in its diagnosis. Surgery and adjuvant therapy is the main treatment.
基金The National Key R&D Program of China under contract No.2018YFC1406202the National Natural Science Foundation of China under contract Nos 41811530301,41830964 and 41976188。
文摘Mesoscale eddies play an important role in modulating the ocean circulation.Many previous studies on the threedimensional structure of mesoscale eddies were mainly based on composite analysis,and there are few targeted observations for individual eddies.A cyclonic eddy surveyed during an oceanographic cruise in the Northwest Pacific Ocean is investigated in this study.The three-dimensional structure of this cyclonic eddy is revealed by observations and simulated by the four-dimensional variational data assimilation(4 DVAR)system combined with the Regional Ocean Modeling System.The observation and assimilation results together present the characteristics of the cyclonic eddy.The cold eddy has an obvious dual-core structure of temperature anomaly.One core is at 50–150 m and another is at 300–550 m,which both have the average temperature anomaly of approximately-3.5℃.The salinity anomaly core is between 250 m and 500 m,which is approximately-0.3.The horizontal velocity structure is axis-asymmetric and it is enhanced on the eastern side of the cold eddy.In the assimilation experiment,sea level anomaly,sea surface temperature,and in situ measurements are assimilated into the system,and the results of assimilation are close to the observations.Based on the high-resolution assimilation output results,the study also diagnoses the vertical velocity in the mesoscale eddy,which reaches the maximum of approximately 10 m/d.The larger vertical velocity is found to be distributed in the range of 0.5 to 1 time of the normalized radius of the eddy.The validation of the simulation result shows that the 4 DVAR method is effective to reconstruct the three-dimensional structure of mesoscale eddy and the research is an application to study the mesoscale eddy in the Northwest Pacific by combining observation and assimilation methods.
基金Supported by The 13th Five-year Science and Technology Major Project of China,on the Prevention and Treatment of Major Infectious Diseases,No.2017ZX10202202.
文摘BACKGROUND Tenofovir disoproxil fumarate(TDF)is a prodrug of a nucleotide analogue.As an antiviral drug,TDF has been proposed in the first-line treatment of chronic hepatitis B(CHB).Qingzhong,a brand name of TDF,commercialized by Jiangsu Chia-tai Tianqing Pharmaceutical Co Ltd.,and Viread,another brand name of TDF,commercialized by GlaxoSmithKline,have both been approved by the State Food and Drug Administration,China.AIM To investigate the efficacy and safety of the two TDF agents in the treatment of Chinese CHB patients.METHODS This trial was registered at ClinicalTrials.gov with the identifier number of NCT02287857.A total of 330 Chinese CHB patients,among which 232 were hepatitis B e antigen(HBeAg)-positive,were included in this 5-year-long,multicenter,double-blinded,double-dummy,randomized-controlled,noninferiority phase III trial.The participants were initially randomized into two groups:Group A(n=161),in which the participants received 300 mg Qingzhong once a day for 48 wk;and Group B,in which the participants received 300 mg Viread once a day for 48 wk.Starting from week 49,all the participants in Groups A and B received 300 mg Qingzhong once a day until the 96th week.In this study,the primary endpoint was the decrease in plasma level of hepatitis B virus(HBV)DNA at the 96th week,while the secondary endpoints were suppression of HBV replication,alanine aminotransferase(ALT)normalization,HBeAg loss,and HBeAg seroconversion rates.RESULTS For the participants with HBeAg-positive CHB,the decrease in mean HBV DNA level relative to the baseline value was comparable between Groups A and B(5.77 vs 5.73 log10 IU/mL,P>0.05)at the 96th week.In addition,similar percentages of HBeAg-positive participants in the two groups exhibited undetectable levels of HBV DNA,HBeAg loss,and HBeAg seroconversion(71.05%vs 77.97%,31.00%vs 27.27%,and 20.22%vs 15.79%,respectively,in Group A vs Group B;P>0.05).For the participants with HBeAg-negative CHB,the decrease in mean HBV DNA level relative to the baseline value was also comparable between Groups A and B(4.46 vs 4.70 log10 IU/mL,P>0.05)at the 96th week.In addition,similar percentages of HBeAg-negative participants in the two groups exhibited undetectable levels of HBV DNA(87.23%vs 94.12%in Group A vs Group B,respectively;P>0.05).Finally,similar percentages of CHB patients(HBeAg-positive or HBeAg-negative)in the two groups exhibited normalization of ALT(80.14%vs 84.57%in Group A vs Group B,respectively;P>0.05),and similar incidences of adverse events were observed(106 vs 104 in Group A vs Group B,respectively;P>0.05).CONCLUSION Both Qingzhong and Viread are effective and safe in the treatment of Chinese CHB patients according to the results of our clinical trial.
文摘Objective:To investigate the effects of adjuvant danhong injection therapy on nerve injury and platelet activation markers in patients with acute cerebral infarction.Methods: A total of 102 patients with acute cerebral infarction who were treated in our hospital between January 2016 and September 2017 were reviewed and divided into the routine group (n=54) who received conventional therapy and the danhong injection group who received adjuvant danhong injection therapy. The differences in the contents of nerve injury indexes in serum and platelet activation markers in peripheral blood were compared between the two groups before treatment, after 3 d of treatment and after 7 d of treatment.Results: There was no statistically significant difference in the contents of nerve injury indexes in serum and platelet activation markers in peripheral blood between the two groups before treatment. After 3 d of treatment and after 7 d of treatment, copeptin, H-FABP and NSE contents in serum of danhong injection group were lower than those of routine group whereas BDNF and bFGF contents were higher than those of routine group;CD62p, CD42b, PAC-1 and PMA contents in peripheral blood were lower than those of routine group.Conclusion: Conventional therapy combined with adjuvant danhong injection therapy can effectively reduce the degree of nerve injury and inhibit the platelet activation in patients with acute cerebral infarction.
基金Ⅴ. ACKNOWLEDGMENTS This work was partially supported by the National Natural Science Foundation of China （No.50721091, No.20533030, No.50731160010, No.20873129, and No.20803071）, the National Key Basic Research Program （No.2006CB922004）, the USTC-HP HPC Project, and by the SCCAS and Shanghai Supercomputer Center.
文摘FeAs^- single layer is tested as a simple model for LaFeAsO and BaFe2As2 based on firstprinciples calculations using generalized gradient approximation （GGA） and GGA＋U. The calculated single-layer geometric and electronic structures are inconsistent with that of bulk materials. The bulk collinear antiferromagnetic ground state failed to be obtained in the FeAs^- single layer. The monotonous behavior of the Fe-As distance in z direction upon electron or hole doping is also in contrast with bulk materials. The results indicate that, in LaFeAsO and BaFe2As2, interactions between FeAs layer and other layers beyond simple charge doping are important, and a single FeAs layer may not represent a good model for Fe based superconducting materials.
文摘BACKGROUND Entecavir(ETV)is a potent and selective nucleotide analog with significant activity against hepatitis B virus(HBV).ETV maleate is a derivative compound of ETV and was reported to have an efficacy and safety profile that is comparable to ETV(Baraclude)when used in Chinese patients with chronic hepatitis B(CHB)in phase III clinical trials(Clinical Trials.gov number,NCT-01926288)at weeks 48,96,and 144.AIM To investigate the antiviral potency and safety of ETV maleate at week 192 in Chinese CHB patients predominantly genotyped B or C.METHODS In this double-blind study,we randomly assigned patients to receive 0.5 mg/d ETV(Group A)or ETV maleate(Group B)(ratio,1:1),each with a placebo tablet for 48 wk.Then,all patients received open-label treatment with 0.5 mg/d ETV maleate starting at week 49.The primary efficacy endpoint was the reduction in HBV DNA levels from baseline.Secondary endpoints included the proportion of patients with undetectable HBV DNA(<20 IU/m L),serologic response,serum alanine aminotransferase(ALT)normalization and development of resistance mutations.RESULTS Two hundred eighteen patients who were hepatitis B e antigen(HBe Ag)positive and 57 who were HBe Ag negative were analyzed and predominantly presented with genotype B(49.82%)or C(48.73%).For the HBe Ag-positive CHB patients,the mean HBV DNA level decrease(6.61 Log10 IU/m L vs 6.69 Log10 IU/m L,P>0.05),viral suppression with HBV DNA<20 IU/m L(83.33%vs 79.17%,P>0.05)and HBe Ag seroconversion(28.77%vs 20.00%,P>0.05)occurred similarly between Groups A and B at week 192.However,there was a significant difference in the proportion of patients with normal ALT levels(91.14%vs 78.38%,P<0.05).For the HBe Ag-negative CHB patients,no significant difference was found between Groups A and B at week 192 in terms of reductions in HBV DNA levels from baseline(6.05 Log10 IU/m L vs 6.03 Log10 IU/m L,P>0.05),percentages of patients who achieved undetectable HBV DNA(100%vs 100%,P>0.05)and rates of ALT normalization(95.65%vs 100.00%,P>0.05).Safety and adverse event profiles were similar between Groups A and B.Two HBe Ag-positive patients in Group A and 5 in Group B developed genotypic resistance to ETV.CONCLUSION Long-term ETV maleate treatment for up to 192 wk is effective and safe in Chinese CHB patients predominantly genotyped as B or C.
基金supported by the National Natural Science Foundation of China(NSFC,Grant Nos.11790302,11790300 and 11773079)CAS Key Laboratory of Solar Activity,National Astronomical Observatories(KLSA202006)the Strategic Priority Research Program on Space Science,CAS(XDA15052200 and XDA15320301)。
文摘In this paper,we carried out multiwavelength observations of three recurring jets on 2014November 7.The jets originated from the same region at the edge of AR 12205 and propagated along the same coronal loop.The eruptions were generated by magnetic reconnection,which is evidenced by continuous magnetic cancellation at the jet base.The projected initial velocity of jet2 is~402 km s^(-1).The accelerations in the ascending and descending phases of jet2 are not consistent,the former is considerably larger than the value of g_(⊙) at the solar surface,while the latter is lower than g_(⊙).There are two possible candidates of extra forces acting on jet2 during its propagation.One is the downward gas pressure from jet1when it falls back and meets with jet2.The other is the viscous drag from the surrounding plasma during the fast propagation of jet2.As a contrast,the accelerations of jet3 in the rising and falling phases are constant,implying that the propagation of jet3 is not significantly influenced by extra forces.
文摘Objective: To investigate the effects of laparoscopic radical resection of rectal cancer on gastrointestinal hormones, visceral protein and pain stress. Methods: A total of 96 patients with rectal cancer radical resection from January 2017 to December 2017 in our hospital, were selected as the research objects, the patients were randomly divided into the observation group (48 cases) and the control group (48 cases). The observation group received laparoscopic radical resection of rectal cancer, while the control group underwent open radical resection of rectal cancer. The levels of gastrin (GAS), motilin (MTL), vasoactive intestinal peptide (VIP), transferrin (TRF), retinol binding protein (RbP), albumin (ALB), prealbumin (PRE), P substance (SP), bradykinin (BK), and prostaglandin-E2 (PGE2) were measured and compared in the two groups. Results: Before operation, there was no significant difference in GAS, MTL and VIP between the two groups. 1, 3, and 5 d after operation, the GAS, MTL and VIP of the two groups were significantly lower than those before operation, and the differences were statistically significant. 1, 3, and 5 d after operation, GAS of the observation group were (66.60±5.79) μmol/L, (71.95±6.16) μmol/L and (77.68±6.38) μmol/L respectively, MTL were (225.68±19.83) pg/mL, (253.76±21.42) pg/mL and (289.98±24.74) pg/mL, VIP were (1.99±0.42) μmol/L, (2.43±0.46) μmol/L, (2.80±0.51) μmol/L, respectively, which were higher than that of the control group at the same time, and the difference was statistically significant. Before operation, there was no significant difference in TRF, RbP, ALB and PRE levels in the two groups. 1, 3 and 5 d after operation, the TRF, RbP, ALB and PRE levels in the two groups were significantly lower than those before operation, and the differences were statistically significant. 1, 3 and 5 d after operation, TRF of the observation group were (1.64±0.33) ng/L, (1.44±0.30) ng/L, (1.46 ±0.32) ng/L, RbP were (19.05±3.85) mg/L, (21.83±4.26) mg/L and (24.54±4.45) mg/L respectively, and ALB were (31.49±2.54) ng/L, (28.21±2.05) ng/L and (28.43±1.99) ng/L, PRE were (0.20±0.06) ng/L, (0.16±0.05) ng/L, (0.15±0.05) ng/L, which were all higher than those in the control group at the same time, and the differences were statistically significant. Before operation, there was no significant difference in SP, BK and PGE2 between the two groups. 1, 3 and 5 d after operation, the SP, BK and PGE2 of the two groups were significantly higher than those before operation and the differences were statistically significant. 1, 3 and 5 d after operation, SP of the observation group was (7.31±0.87) μg/mL, (5.43±0.51) μg/mL and (3.10±0.24) μg/mL, BK was (9.53±0.80) μg/L, (7.81±0.79) μg/L and 6.30±0.53) pg/mL, and PGE2 were (152.42±14.80) pg/mL, (131.22±13.35) pg/mL, (117.86±11.95) pg/mL, which were all lower than those in the control group at the same time, and the differences were statistically significant. Conclusion: Laparoscopic radical resection of rectal cancer can help patients recover gastrointestinal function faster and cause less pain stress.
文摘Objective: To study the changes of microelement content and erythrocyte immune function in patients with cerebral infarction complicated by pneumonia and their relationship with infection indexes. Methods: Patients with cerebral infarction complicated by pneumonia who were treated in Huangshi Central Hospital between April 2014 and February 2017 were selected as the infection group of the research, and patients with cerebral infarction who were treated in Huangshi Central Hospital during the same period were selected as the control group of the research. Serum was collected to determine the contents of trace elements Zn, Fe, Cu, Se and Ca as well as infection index PCT, and peripheral blood was collected to determine the erythrocyte immune function indexes. Results: Serum PCT content of infection group was greatly higher than that of control group. Serum zinc and Fe contents as well as peripheral blood RBC-ICR, RBC-C3bR, FEER, CD58 and CD59 levels of infection group were greatly lower than those of control group, FEIR level in peripheral blood was obviously higher than that of control group, and Cu, Se and Ca contents were not greatly different from those of control group;serum zinc and Fe contents as well as peripheral blood RBC-ICR, RBC-C3bR, FEER, CD58 and CD59 levels of infection group of patients with high PCT content were remarkably lower than those of patients with low PCT content, FEIR level in peripheral blood was significantly higher than that of patients with low PCT content, and Cu, Se and Ca contents were not greatly different from those of patients with low PCT content. Conclusion:The deficiency of microelements Zn and Fe as well as the weakening of erythrocyte immune function is closely related to the degree of infection in the patients with cerebral infarction complicated by pneumonia.
基金supported by the National Key R&D Program of China(No.2023YFC3041500 and 2023YFC3041700)the Key-Area R&D Program of Guangdong Province(No.2022B1111020002)+1 种基金the R&D Program of Guangzhou Laboratory(No.SRPG23-001)the Guangzhou Scienceand Technology Planning Project(No.202103000026 and 202201020316).
文摘The status of coinfection during the national outbreak of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron BA.5.2 or BF.7 in China in the winter of 2022,which is suspected to contribute substantially to the overloaded severe cases,needs to be investigated.We analyzed the coinfection status of 385 severe patients infected with the Omicron variant in Guangzhou using metagenomic sequencing.We found that 317(82.3%)patients were coinfected with at least one additional pathogen(s),including bacteria(58.7%),fungi(27.1%)and viruses(73.5%).Pseudomonas aeruginosa(P.aeruginosa)(24.2%),Staphylococcus aureus(S.aureus)(14.0%),andKlebsiella pneumoniae(K.pneumonia)(13.4%)ranked as the top three coinfected bacteria.Aspergillus fumigatus(A.fumigatus)(39.5%),Pneumocystis jirovecii(P.jirovecii)(24.4%)andCanidia albicans(C.albicans)(22.1%)were the top three coinfected fungi.Epstein-Barr virus(EBV)(63.1%),Human herpesvirus 7(HHV-7)(34.8%),and Herpes simplex virus 1(HSV-1)(32.6%)were the top three coinfected viruses.Of note,the detection of multiple coinfections of potential pathogenic bacteria,fungi,and viruses,despite lacking consistent patterns,highlighted a complicated synergistic contribution to disease severity.Our study presents the most comprehensive spectrum of bacterial,fungal,and viral coinfections in Omicron-associated severe coronavirus disease 2019(COVID-19),implying that the coinfection of conditional pathogens might synergistically deteriorate the Omicron infection outcomes.
基金supported by a grant from the National Key R&D Program of China(2023YFC3041600 YW,the National Natural Science Foundation of China(82025001 JZ,92369113 YW,82172240 YW)Guangdong Basic and Applied Research Projects(2023B1515020040 YW,2021B1515130005 JZ,2021B1212030016 JD,2021A1111100009 JD)+7 种基金Science and Technology Planning Project of Guangzhou City(2023A04J1279 LZ)ZhongNanShan Medical Foundation of Guangdong Province(ZNSA-2020013 JZ)the Science and Technology Project of General Administration of Customs,P.R.China(2023HK065 LZ)State Key Laboratory of Respiratory Disease(SKLRD-Z-202214,SKLRD-OP-202309 YW,SKLRD-Z-202411 LZ)the Self-supporting Program of Guangzhou Laboratory(GZNL2023A01006,SRPG22-001)Guangzhou Medical University(YP2022005 YW)Korea Institute of Planning and Evaluation for Technology in Food,Agriculture and Forestry(IPET)through Animal Disease Management Technology Advancement Support Program,funded by the Ministry of Agriculture,Food and Rural Affairs(MAFRA)(122012-2,122060-2 JZ)the National Clinical Research Center for Respiratory Disease(BRD-NCRCRD,Guangzhou,Southern China).Patronus Biotech is a company researching virus-like particle display technology and vaccines.Yu Zhou and Jing Jin are named inventors on a patent invention relating to the described novel SARS-CoV-2 virus-like particle vaccine.All BALB/c mouse experiments complied with relevant ethical regulations for animal research and were approved by the LUYE PHARMA Animal Experimentation Ethics Committee.The K18-hACE2 mouse experiment was reviewed and approved by the Institutional Animal Care and Use Committees of Guangzhou Medical University(2023-0451).All authors declare that they have no conflict of interests.
文摘Dear Editor,The newly emerged severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron subvariants(XBB.1,EG.5 and JN.1)and sublineages have been circulating globally with superior growth advantages over other Omicron variants(Tamura et al.,2023).However,second-generation vaccines,including the BA.2 or BA.5 bivalent vaccine boosters,did not produce robust neutralization against the newly emerged XBB.1 or EG.5(Zou et al.,2023).Compared with variants BA.2 and BA.5,XBB.1 carries more mutations in the receptor binding domain(RBD)and exhibits significant immune evasion(Wang et al.,2023b).XBB.1 and its descendent lineages have rapidly become the dominant SARS-CoV-2 strain and are causing the next global wave of COVID-19.Therefore,it is essential to develop an updated vaccine against the newly emerged SARS-CoV-2 variants.
基金National Natural Science Foundation of China(12174123)。
文摘Nanoparticles made of different materials usually support optical resonances in the visible to near infrared spectral range,such as the localized surface plasmons observed in metallic nanoparticles and the Mie resonances observed in dielectric ones.Such optical resonances,which are important for practical applications,depend strongly on the morphologies of nanoparticles.Laser irradiation is a simple but effective way to modify such optical resonances through the change in the morphology of a nanoparticle.Although laser-induced shaping of metallic nanoparticles has been successfully demonstrated,it remains a big challenge for dielectric nanoparticles due to their larger Young’s modulus and smaller thermal conductivities.Here,we proposed and demonstrated a strategy for realizing controllable shaping of high-index dielectric nanoparticles by exploiting the giant optical force induced by femtosecond laser pulses.It was found that both Si and Ge nanoparticles can be lit up by resonantly exciting the optical resonances with femtosecond laser pulses,leading to the luminescence burst when the laser power exceeds a threshold.In addition,the morphologies of Si and Ge nanoparticles can be modified by utilizing the giant absorption force exerted on them and the reduced Young’s modulus at high temperatures.The shape transformation from sphere to ellipsoid can be realized by laser irradiation,leading to the blueshifts of the optical resonances.It was found that Si and Ge nanoparticles were generally elongated along the direction parallel to the polarization of the laser light.Controllable shaping of Si and Ge can be achieved by deliberately adjusting the excitation wavelength and the laser power.Our findings are helpful for understanding the giant absorption force of femtosecond laser light and are useful for designing nanoscale photonic devices based on shaped highindex nanoparticles.
