In recent years,antibiotics have been playing more and more important roles in maintaining human health with the increasing variety and quantity.However,under the influence of different reasons caused by subjective or objective factors,antibiotics irrational use has induced bacterial resistance and adverse reactions,which are becoming more and more serious.The paper put forward the countermeasures of antibiotics irrational use and provided reference for rational use of antibiotics based on the present situation analysis in China and foreign experience in order to control the irrational use.

Objective To investigate the effect of allicin on the development of atherosclerosis in apoE-/-mice and explore its underlying mechanism from the perspective of protein S-nitrosylation.Methods Thirty male apoE-/- mice were randomly divided into 3 groups:control group (saline,ig),low-dose group (allicin,9 mg/kg·d, ig)and high-dose group (allicin,18 mg/kg·d,ig).They were fed with high cholesterol diet for 12 weeks.The levels of plasma lipids,oxidized-LDL (ox-LDL),malondialdehyde,tumor necrosis factor-alpha and nitric oxide (NO)were measured.The atherosclerotic lesions in aortic root were evaluated after hematoxylin and eosin staining and elastica van Gieson and immunohistochemical staining,respectively.Furthermore,in vitro experiments were performed using human umbilical vein endothelial cells (HUVECs).The HUVECs were treated with allicin (10μmol/L or 20 μmol/L)for 24 hours in the presence of ox-LDL (50 μg/mL).The level of NO in supernatant was measured by a nitrate/nitrite assay. The protein S-nitrosylation of the HUVECs was detected through immunofluorescence.Results The histological analysis revealed that allicin treatment not only significantly decreased the areas of the atherosclerotic lesion (all P <0.05)but also suppressed the macrophage accumulation and smooth muscle cell proliferation in the lesion.There was no significant difference in the levels of plasma lipids between control and treated groups.However,allicin exerted obvious anti-oxidative and anti-inflammatory effects. Interestingly,the allicin treatment led to marked increase of the plasma NO level (P <0.05)and aortic protein S-nitrosylation.The experiments in vitro further proved that the allicin up-regulated the levels of NO and protein S-nitrosylation in HUVECs treated with ox-LDL (P < 0.01 ).Conclusion Allicin can inhibit the development of atherosclerosis.The mechanism is associated with the up-regulation of protein S-nitrosylation in endothelial cells, which plays an important role in anti-oxidization and anti-inflammation.

Objective To study the epidemiological tendency and influencing factors for major chronic diseases in the elderly in Changsha,and to provide the scientific basis for the prevention and control strategies for the aged people.Methods Multi-stage randomized cluster sampling method was used in selecting 3135 persons aged 65 and over in Changsha.Using unified questionnaire and face to face asking method to investigate the prevalence of chronic diseases and its influencing factors.Results 95.7％ of questionnaires were valid (3000/3135).The total prevalence rate of chronic disease was 86.33％ in patients aged from 65-96 (74.83±6.63) years,with 85.49％ (1332) in males,and 87.23％ (1258) infemales(x2=1.93,P=0.164).Most of them had 1-3 kinds of chronic diseases,in 1 patient with 13 kinds of chronic diseases at the most.The most common chronic diseases among the elderly were hypertension,heart diseases,osteoarthritis,diabetes mellitus,benign prostatic hyperplasia,and fatty liver.Multivariate logistic regression suggested that age,marital status,smoking,quality of sleep were common influencing factors for hypertension,heart diseases and diabetes mellitus.Conclusions The prevalence of chronic diseases is high and the influencing factors are ubiquitous among the elderly in Changsha community.Community health education should be carried out to improve the effect of prevention and control of chronic diseases.

Objective To investigate the mRNA and protein expression levels of telomeric-repeat binding factor-1 (TRF1) and TRF2 in the peripheral blood mononuclear cells (PBMCs) of patients with systemic lupus erythematosus (SLE),and the relations between these gene expression levels and clinical data of SLE patients were explored.Methods According to disease activity,these SLE patients were divided into the active group (40 cases) and the stable group (67 cases).These patients were also grouped as renal damage group (46 cases) and renal damage-free group (61 cases) based on their renal conditions.Healthy individuals (41 cases) were also included as control.Real-time quantitative polymerase chain reaction (RT-qPCR) was employed to study the mRNA expression of TRF1 and TRF2.The protein levels of TRF1 and TRF2 were measured by Western Blot (WB).Independent-Samples t test or one-way analysis of variance (ANOVA) in conjunction with the Least-Significant Difference method (LSD method) wasperformed if the data were in normal distributions;otherwise,the Kruskal-Wallis test was applied.Spearman's correlation analysis was also used for statistical analysis.Results The mRNA and protein expression levels of TRF1 and TRF2 in the PBMCs of the active group (TRF1:0.003 1±0.003 3;TRF2:0.010 5±0.064 8) and renal damage group (TRF1:0.002 3 ±0.002 6;TRF2:0.004 3 ±0.003 3) were significantly increased compared to the stable group (TRF1:0.001 2±0.001 1;TRF2:0.004 2±0.008 6),the renal damage-free group (TRF1:0.001 3±0.001 8;TRF2:0.003 4±0.007 2) and healthy (TRF1:0.001 2±0.003 0;TRF2:0.003 4±0.002 7) individuals respectively (P＜0.05).In SLE patients,the expression levels of TRF1 mRNA were correlated with erythrocyte sedimentation rate (r=0.365,P＜0.05);the expression levels of TRF2 mRNA were correlated with SLEDAI score (r=0.270,P＜0.05),erythrocyte sedimentation rate (r=0.304,P＜0.05),creatinine (r=0.258,P＜0.05) and 24-hour urinary protein (r=0.344,P＜0.05).Conclusion Altered expression of TRF1 and TRF2 might be involved in the pathogenesis of Systemic lupus erythematosus.The positive correlation between TRF2 and SLEDAI score,24-hour urinary protein suggest that TRF2 might be usedas a biomarker for disease activity or renal damage in

Objective:To evaluate the relationship between declined preoperative left ventricular diastolic function and postoperative increased extravascular lung water (EVLW) in the patients undergoing transurethral resection of the prostate (TURP).Methods:A total of 116 patients, aged 55-90 yr, of American Society of Anesthesiologists physical status Ⅰ-Ⅲ, with body mass index of ≤30 kg/m 2, undergoing elective TURP under general anesthesia, without increased EVLW before surgery, were included in the study.Lung ultrasound examination was performed and lung ultrasound scores were assessed before leaving PACU.Increased EVLW was defined as lung ultrasound score ≥20.The occurrence of increased EVLW after operation was recorded, and patients were divided into increased EVLW group and non-increased EVLW group according to whether increased EVLW occurred.Multivariate logistic regression analysis was used to identify the risk factors for postoperative increased EVLW. Results:The results of multivariate logistic regression analysis showed that declined preoperative left ventricular diastolic function was an independent risk factor for postoperative increased EVLW ( P<0.05). Conclusions:Declined preoperative left ventricular diastolic function is an independent risk factor for postoperative increased EVLW in the patients undergoing TURP.

Objective To screen the quality evaluation indicators of Bushen Huoxue Prescription(BHP)in the treatment of diabetic retinopathy(DR)by network pharmacology and molecular docking technology,and to establish content determination of active components in BHP by ultra-high-performance liquid chromatography triple-quadrupole mass spectrometry(UHPLC-QqQ-MS/MS).Methods Network pharmacology was used to screen the disease-related targets and key components,followed by molecular docking to further verify the interaction between them and confirm the active ingredients in BHP as the quality evaluation indicators.A UHPLC-QqQ-MS/MS method for the content determination of the active ingredients in BHP was established.A ZORBAX SB-C18 column(2.1 mm×50 mm,1.8 μm)was used,and methanol(A)-0.1％formic acid solution(B)was used as mobile phase.Gradient elution was performed in multiple reaction monitor mode.The flow rate was 0.3 mL·min-1 and the injection volume was 1 μL.Results Network pharmacology and molecular docking revealed five core targets and 12 BHP-related components(verbascoside,echinacoside,isoacteoside,tanshinone ⅡA,cryptotanshinone,dihydrotanshinone I,ginsenoside Re,Rd and Rb1,puerarin,daidzin,biochanin A)for the treatment of DR.There was a strong binding affinity between them(binding energy≤-5.0 kcal·mol-1).The established quantitative method demonstrated each component presented a good linearity within the specified range(r>0.999 5).The average recovery was in the range of 97.57％～101.48％.The contents of 12 components in eight batches of BHP samples were 0.027 9％～0.050 6％,0.006 4％～0.022 0％,0.017 1％～0.041 5％,0.009 2％～0.015 4％,0.012 6％～0.020 5％,0.004 4％～0.007 6％,0.334％～0.643％,0.238％～0.530％,0.353％～0.693％,3.411％～6.048％,1.023％～1.352％,0.000 8％～0.001 8％,respectively.Conclusion Based on network pharmacology,molecular docking and UHPLC-QqQ-MS/MS,a method for rapid screening and determination of 12 active components of BHP in the prevention and treatment of DR was established.This study provided a reference for comprehensive assessment of the quality and effectiveness of BHP.

At present, the major public health challenges caused by novel coronavirus infection have gradually subside. However, a large number of people are still suffering from long-novel coronavirus syndrome or post-novel coronavirus syndrome. The clinical manifestations of long coronavirus syndrome are related to multiple systems, such as respiratory, circulatory, nervous, digestive and musculoskeletal systems, with various long-term persistent symptoms after novel coronavirus infection. At the same time, the infection of the novel coronavirus is an important cause of frailty and sarcopenia in the elderly population. However, at present, the scholars have not paid enough attention to the skeletal muscle weakness caused by the novel coronavirus. Therefore, this paper focuses on the long-novel coronavirus syndrome and sarcopenia to explore the pathological mechanism of skeletal muscle attenuation caused by the SARS-CoV-2 mediated "cytokine storm", mitochondrial damage, hypoxia state and other links, so as to raise the attention of clinical and academic researchers and improve the clinical strategy of frailty and sarcopenia after novel coronavirus infection.

AIM:To explore the effect of polyphenolic compound 3,5-dihydroxy-4-methoxybenzyl alcohol(DHMBA)on hypoxia/reoxygenation(H/R)injury of human umbilical vein endothelial cells(EA.hy926 cells)and its po-tential mechanisms.METHODS:To construct an H/R model,the EA.hy926 cells were cultured in an acidic hypoxia buffer while in an anaerobic workstation.The cells were divided into control,H/R,H/R+different doses of DHMBA,H/R+edaravone(antioxidant)and H/R+reactive oxygen species(ROS)inducer oligomycin A+DHMBA groups.Cell viability was measured by CCK-8 assay,and tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)levels in cells were mea-sured by ELISA.Phosphorylation of endothelial nitric oxide synthase(eNOS)and nuclear factor-κB(NF-κB)p65 were measured by Western blot.Intracellular NO levels were determined by laser confocal microscopy.Glutathione(GSH)/glu-tathione disulfide(GSSG)oxidation balance was determined by the dinitrobenzoic acid chromogenic method.Intracellular ROS levels were measured by flow cytometry.Lactate dehydrogenase(LDH)leakage was determined using nitro blue tet-razolium staining.Scratch assays were performed to assess cell migration.RESULTS:DHMBA exhibited no significant cytotoxicity between 125 and 1 000 μmol/L.In H/R-injured human umbilical vein endothelial cells,DHMBA improved cell survival,inhibited phosphorylation of NF-κB p65,reduced the content of TNF-α and IL-6,and increased phosphory-lation of eNOS and NO levels.DHMBA also suppressed ROS overload and restored the ratio between GSH and oxidized GSH,decreased in LDH leakage and increased cell migration in H/R-injured human umbilical vein endothelial cells.CONCLUSION:DHMBA can alleviate H/R-induced oxidative stress,inflammation,cellular damage,and dysfunction,which are associated with the ability of DHMBA to inhibit ROS production in human umbilical vein endothelial cells.

Hand, foot and mouth disease (HFMD) is a common infectious disease among children, and has emerged as a substantial global public health concern, particularly in the Asia-Pacific region. It has a serious impact on children′s health and imposes a significant disease burden on families and society. Currently, there are three globally available HFMD vaccines (all of them are EV71 inactivated vaccine), which were first approved and marketed in China in 2016. Real-world studies have shown a decrease in the incidence, severity, and mortality rate of EV71-related HFMD, providing evidence of its effectiveness. Additionally, related data have indicated a significant change in the pathogen spectrum of HFMD in China in the post-vaccine era. This article aims to provide a comprehensive review of the safety, effectiveness and immune-persistence data of EV71 vaccine acquired through real-world studies.

Objective    To investigate the effects of telmisartan on the proliferation, migration and apoptosis of non-small cell lung cancer A549 and the mechanism of regulating Wnt signaling pathway. Methods    Non-small cell lung cancer cell line A549 was cultured in vitro. Cell counting kit-8 (CCK-8) assay was used to detect the effect of telmisartan at different concentrations on the proliferative activity of A549 cells. The survival fraction of A549 treated with different concentrations of telmisartan was determined by colony-formation assay. The effect of telmisartan at different concentrations on the migration ability of A549 cells was examined in the wounding healing assay. Hoechst staining was used to detect the effects of telmisartan at different concentrations on the apoptosis of A549. Western bloting was used to detect the expressions of β-actin, proliferating cell nuclear antigen (PCNA), Bax, Bcl-2, Wnt-3a, Beta-catenin (β-catenin), serine protein kinase 3β (p-GSK-3β), glycogen synthase kinase-3β (GSK-3β) and c-myc. Results    Different concentrations of telmisartan treatment inhibited the proliferation activity, colony-formation rate and migration of A549 cells, and reduced the expression of PCNA in a concentration-dependent manner. Telmisartan treatment promoted the apoptosis of A549 cells, significantly increased the expression of pro-apoptotic protein Bax and decreased the expression of anti-apoptotic protein Bcl-2. The expression levels of Wnt-3a, β-catenin, p-GSK-3β, and c-myc in A549 cells increased after treatment with telmisartan, while the expression levels of GSK-3β decreased. Conclusion    Telmisartan may play a role in the proliferation, migration and apoptosis of non-small cell lung cancer A549 cells, and  inhibiting the Wnt/β-catenin signaling pathway may be one of the mechanisms.