Physical health status and influencing factors of preschool children in Tibet / 中国学校卫生

Objective@#To explore physical health status and influencing factors of preschool children in Tibet, so as to provide a scientific reference and theoretical basis for the healthy development of physical fitness.@*Methods@#Data were collected from children (3-6 years old) of Xizang national physical fitness monitoring, and a total of 1 521 preschool children were recruited who received questionnaire survey and physical fitness test. Independent sample t-test and one-way ANOVA were used to compare the differences in physical fitness indexes of preschool children in different groups. Chi square test and binary Logistic regression model were used to analyze the factors affecting physical health of preschool children.@*Results@#The total qualified rate of physical fitness was 79.75%, among which the excellent rate was 3.16%, the good rate was 15.12%, the qualified rate was 61.47% and the unqualified was 20.25%. From the perspective of BMI, the excellent physical fitness rate (3.74%) and good physical fitness rate ( 17.47% ) were highest in healthy weight preschool children, and the qualified physical fitness rate of overweight preschool children (69.03%) was higher than that of obese (55.88%) and healthy weight preschool children (60.68%)( χ 2=53.56, P <0.01). From the perspective of ethnic, Tibetan children s physique proficiency (3.69%), good rate ( 17.13% ) than with the elevation of the Han nationality (0.74%, 5.88%), fraction defective (16.97%), lower than that of Han nationality (35.29%) ( χ 2=53.71, P <0.01); The results of chest circumference, skinfold thickness, body fat percentage, tennis throw distance, continuous jump of both feet, sitting forward bend and balance beam walking of Tibetan children were higher than those of Han children, and the results of quiet heart rate and standing long jump were lower than those of Han children ( t = 2.72 , 10.95, 9.66, 3.68, 3.88, 8.04, 3.56, 8.70, -4.39 , -4.40, P <0.01). Binary Logistic regression analysis showed that Tibetans ( OR =2.29), breastfeeding ( OR =1.51), body dynamics outdoor daily exercise duration 30-90 min (30-<60 min ;OR = 2.03 ; 60-90 min: OR =2.22) were positively correlated with physical health of preschool children ( P <0.05).@*Conclusions@#The total physical qualification rate of preschool children aged 3-6 years old in Tibet is lower than the national average. Ethnic group, feeding pattern during infancy, and physical activity are all factors that affected the physical fitness of preschool children in Tibet. It is of great significance to improve the physique of preschool children in Tibet to promote their sustainable and healthy development.

Population structure of food-borne Staphylococcus aureus in China / 中华流行病学杂志

Objective: To understand the population structure of food-borne Staphylococcus (S.) aureus in China. Methods: Whole genome sequencing was used to analyze 763 food-borne S. aureus strains from 16 provinces in China from 2006 to 2020. Multilocus sequence typing (MLST), staphylococcal protein A gene (spa) typing, and staphylococcal chromosome cassettemec (SCCmec) typing were conducted, and minimum spanning tree based on ST types (STs) was constructed by BioNumerics 7.5 software. Thirty-one S. aureus strains isolated from imported food products were also included in constructing the genome phylogenetic tree. Results: A total of 90 STs (20 novel types) and 160 spa types were detected in the 763 S. aureus isolates. The 72 STs (72/90, 80.0%) were related to 22 clone complexes. The predominant clone complexes were CC7, CC1, CC5, CC398, CC188, CC59, CC6, CC88, CC15, and CC25, accounting for 82.44% (629/763) of the total. The STs and spa types in the predominant clone complexes changed over the years. The methicillin-resistant S. aureus (MRSA) detection rate was 7.60%, and 7 SCCmec types were identified. The ST59-t437-Ⅳa (17.24%, 10/58), ST239-t030-Ⅲ (12.07%, 7/58), ST59-t437-Ⅴb (8.62%, 5/58), ST338-t437-Ⅴb (6.90%, 4/58) and ST338-t441-Ⅴb (6.90%, 4/58) were the main types in MRSA strains. The genome phylogenetic tree had two clades, and the strains with the same CC, ST, and spa types clustered together. All CC7 methicillin sensitive S. aureus strains were included in Clade1, while 21 clone complexes and all MRSA strains were in Clade2. The MRSA strains clustered according to the SCCmec and STs. The strains from imported food products in CC398, CC7, CC30, CC12, and CC188 had far distances from Chinese strains in the tree. Conclusions: In this study, the predominant clone complexes of food-borne strains were CC7, CC1, CC5, CC398, CC188, CC59, CC6, CC88, CC15, and CC25, which overlapped with the previously reported clone complexes of hospital and community-associated strains in China, suggesting that close attention needs to be paid to food, a vehicle of pathogen transmission in community and food poisoning.

Prediction of superantigen active sites and clonal expression of staphylococcal enterotoxin-like W / 中华流行病学杂志

Objective: The docking and superantigen activity sites of staphylococcal enterotoxin-like W (SElW) and T cell receptor (TCR) were predicted, and its SElW was cloned, expressed and purified. Methods: AlphaFold was used to predict the 3D structure of SElW protein monomers, and the protein models were evaluated with the help of the SAVES online server from ERRAT, Ramachandran plot, and Verify_3D. The ZDOCK server simulates the docking conformation of SElW and TCR, and the amino acid sequences of SElW and other serotype enterotoxins were aligned. The primers were designed to amplify selw, and the fragment was recombined into the pMD18-T vector and sequenced. Then recombinant plasmid pMD18-T was digested with BamHⅠand Hind Ⅲ. The target fragment was recombined into the expression plasmid pET-28a(+). After identification of the recombinant plasmid, the protein expression was induced by isopropyl-beta-D- thiogalactopyranoside. The SElW expressed in the supernatant was purified by affinity chromatography and quantified by the BCA method. Results: The predicted three-dimensional structure showed that the SElW protein was composed of two domains, the amino-terminal and the carboxy-terminal. The amino-terminal domain was composed of 3 α-helices and 6 β-sheets, and the carboxy-terminal domain included 2 α-helices and 7 antiparallel β-sheets composition. The overall quality factor score of the SElW protein model was 98.08, with 93.24% of the amino acids having a Verify_3D score ≥0.2 and no amino acids located in disallowed regions. The docking conformation with the highest score (1 521.328) was selected as the analysis object, and the 19 hydrogen bonds between the corresponding amino acid residues of SElW and TCR were analyzed by PyMOL. Combined with sequence alignment and the published data, this study predicted and found five important superantigen active sites, namely Y18, N19, W55, C88, and C98. The highly purified soluble recombinant protein SElW was obtained with cloning, expression, and protein purification. Conclusions: The study found five superantigen active sites in SElW protein that need special attention and successfully constructed and expressed the SElW protein, which laid the foundation for further exploration of the immune recognition mechanism of SElW.

Prevention of Deep Vein Thrombosis by Panax Notoginseng Saponins Combined with Low-Molecular-Weight Heparin in Surgical Patients / 中国结合医学杂志

OBJECTIVE@#To evaluate the efficacy of deep vein thrombosis (DVT) prevention among real-world surgical inpatients who received panax notoginseng saponins (PNS) combined with low-molecular-weight heparin (LMWH).@*METHODS@#A prospective cohort study was conducted among surgical patients between January 2016 and November 2018 in Xuanwu Hospital, Capital Medical University, Beijing, China. Participants received LMWH alone or PNS combined with LMWH for preventing DVT. The primary outcome was incidence of lower extremity DVT, which was screened once a week. Participants in the LMWH group were given LMWH (enoxaparin) via hypodermic injection, 4000-8000 AxalU once daily. Participants in the exposure group received PNS (Xuesaitong oral tablets, 100 mg, 3 times daily) combined with LMWH given the same as LMWH group.@*RESULTS@#Of the 325 patients screened for the study, 281 participants were included in the final analysis. The cohort was divided into PNS + LMWH group and LMWH group with 134 and 147 participants, respectively. There was a significant difference of DVT incidence between two groups (P=0.01), with 21 (15.7%) incident DVT in the PNS + LMWH group, and 41 (27.9%) incident DVT in the LMWH group. Compared with participants without DVT, the participants diagnosed with DVT were older and had higher D-dimer level. The multivariate logistic regression model showed a significant lower risk of incident DVT among participants in the PNS + LMWH group compared with the LMWH group (odds ratio 0.46, 95% confidence interval, 0.25-0.86). There were no significant differences in thromboelaslography values (including R, K, Angle, and MA) and differences in severe bleeding between two groups. No symptomatic pulmonary embolism occurred during the study.@*CONCLUSION@#Combined application of PNS and LMWH can effectively reduce the incidence of DVT among surgical inpatients compared with LMWH monotherapy, without increased risk of bleeding.

Comparison between high-frequency irreversible electroporation and irreversible electroporation ablation of small swine liver: follow-up of DCE-MRI and pathological observations / 中华医学杂志(英文版)

BACKGROUND@#High-frequency irreversible electroporation (H-FIRE) is a novel, next-generation nanoknife technology with the advantage of relieving irreversible electroporation (IRE)-induced muscle contractions. However, the difference between IRE and H-FIRE with distinct ablation parameters was not clearly defined. This study aimed to compare the efficacy of the two treatments in vivo.@*METHODS@#Ten Bama miniature swine were divided into two group: five in the 1-day group and five in the 7-day group. The efficacy of IRE and H-FIRE ablation was compared by volume transfer constant (Krans), rate constant (Kep) and extravascular extracellular volume fraction (Ve) value of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), size of the ablation zone, and histologic analysis. Each animal underwent the IRE and H-FIRE. Temperatures of the electrodes were measured during ablation. DCE-MRI images were obtained 1, 4, and 7 days after ablation in the 7-day group. All animals in the two groups were euthanized 1 day or 7 days after ablation, and subsequently, IRE and H-FIRE treated liver tissues were collected for histological examination. Student's t test or Mann-Whitney U test was applied for comparing any two groups. One-way analysis of variance (ANOVA) test and Welch's ANOVA test followed by Holm-Sidak's multiple comparisons test, one-way ANOVA with repeated measures followed by Bonferroni test, or Kruskal-Wallis H test followed by Dunn's multiple comparison test was used for multiple group comparisons and post hoc analyses. Pearson correlation coefficient test was conducted to analyze the relationship between two variables.@*RESULTS@#Higher Ve was seen in IRE zone than in H-FIRE zone (0.14 ± 0.02 vs. 0.08 ± 0.05, t = 2.408, P = 0.043) on day 4, but no significant difference was seen in Ktrans or Kep between IRE and H-FIRE zones at all time points (all P > 0.05). For IRE zone, the greatest Ktrans was seen on day 7, which was significantly higher than that on day 1 (P = 0.033). The ablation zone size of H-FIRE was significantly larger than IRE 1 day (4.74 ± 0.88 cm2vs. 3.20 ± 0.77 cm2, t = 3.241, P = 0.009) and 4 days (2.22 ± 0.83 cm2vs. 1.30 ± 0.50 cm2, t = 2.343, P = 0.041) after treatment. Apoptotic index (0.05 ± 0.02 vs. 0.73 ± 0.06 vs. 0.68 ± 0.07, F = 241.300, P  0.05). Electrode temperature variations were not significantly different between the two zones (18.00 ± 3.77°C vs. 16.20 ± 7.45°C, t = 0.682, P = 0.504). The Ktrans value (r = 0.940, P = 0.017) and the Kep value (r = 0.895, P = 0.040) of the H-FIRE zone were positively correlated with the number of hepatocytes in the ablation zone.@*CONCLUSIONS@#H-FIRE showed a comparable ablation effect to IRE. DCE-MRI has the potential to monitor the changes of H-FIRE ablation zone.

Clinical Efficacy of Flavored Sanxitang Combined with Celecoxib in Treatment of Gonarthromeningitis Cased by Dampness and Cold / 中国实验方剂学杂志

Objective::To observe the clinical efficacy of flavored Sanxitang combined with celecoxib in treating gonarthromeningitis caused by dampness and cold. Method::Totally 120 case were randomly divided into the control group and the treatment group, with 60 cases in each group. The control group was given celecoxib, and the treatment group was treated with flavored sanxitang combined with celecoxib for 30 d. The visual analogue scale (VAS), American knee association knee function scale (AKS), arthritis impact scale (AIMS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were observed before and after treatment. The circumferential diameter, articular cavity effusion and synovial hyperplasia thickness were measured. The serum tumor necrosis factor-α(TNF-α), matrix metalloproteinase (MMP)-3, serum interleukin-1 (IL-1) and erythrocyte sedimentation rate (ESR) were detected. The effective rate and adverse reactions were observed in two groups. Result::The total effective rate in treatment group was 94.8% (55/58), which was higher than 80.7% (46/57) in control group (P<0.05). Compared with before treatment, VAS, AIMS, WOMAC, knee circumference, articular cavity effusion and synovial hyperplasia thickness were significantly reduced in two groups (P<0.05), while the AKS score was significantly increased (P<0.05). Compared with after treatment, VAS, AIMS, WOMAC, knee circumference, articular cavity effusion and synovial hyperplasia thickness were significantly reduced in observation group (P<0.05), whereas the AKS score was significantly increased (P<0.05). TNF-α, MMP-3, IL-1 and ESR in two groups were significantly lower than those group before treatment (P<0.05). After treatment, TNF-α, MMP-3, IL-1 and ESR levels in observation group were significantly reduced compared with those in control group (P<0.05). The incidence rate of adverse reactions in treatment group was 5.89% (4/58), which was lower than 22.81% (13/57) in control group (P<0.05). Conclusion::Flavored Sanxitang combined with celecoxib could alleviate the clinical symptoms of gonarthromeningitis caused by dampness and cold, with a low incidence of adverse reactions.

Efficacy of Modified Guiling Ganluyin Combined with Colchicine in Treatment of Gouty Arthritis with Damp-heat Accumulation / 中国实验方剂学杂志

Objective:To explore the clinical efficacy of modified Guiling Ganluyin combined with colchicine in treatment of gouty arthritis(GA) damp-heat accumulation. Method:A total of 210 cases of GA were randomly divided into traditional Chinese medicine(TCM) group(70 cases), western medicine group (70 cases), and integrated traditional Chinese and western medicine group(70 cases) according to the digital table method. The patients in TCM group were treated with modified Guiling Ganluyin, the patients in western medicine group were treated with colchicine, and the patients in integrated traditional Chinese and western medicine group received modified Guiling Ganluyin + colchicine, with a treatment course of 30 d in all groups. The clinical symptoms before and after the treatment [joint pain visual analogue scale(VAS), patient global appraise(PGA), number rating scale for pain(NRS)], inflammatory cytokines in serum and joint fluid [tumor necrosis factor-alpha(TNF-α), interleukin-1β(IL-1β), uric acid(UA)], hemorheology index [whole blood high cut viscosity(HCV), whole blood low cut viscosity(LCV), whole blood reductive viscosity(RV)]in 3 groups were observed. The total effective rate and the adverse reactions were compared. Result:Six cases fell off during the study period. The total effective rate in integrated traditional Chinese and western medicine group was 97.1%（67/69）, which higher than 80.8%(55/68) in TCM group (χ2=8.153, P<0.05) and 79.1%(53/67) in western medicine group (χ2=8.735, P<0.05）. Compared with TCM group and western medicine group, the clinical symptoms VAS and NRS scores in integrated traditional Chinese and western medicine group were significantly lower(P<0.05), while the PGA scores were significantly higher(P<0.05). TNF-α, IL-1β and UA in serum and articular fluid in integrated traditional Chinese and western medicine group were significantly decreased(P<0.05). HCV, LCV and RV were significantly decreased in integrated traditional Chinese and western medicine group(P<0.05). Compared with the traditional Chinese and western medicine group, the incidence of adverse reactions was higher in the western medicine group (χ2=5.538,P<0.05) and lower in the Chinese medicine group (χ2=6.273，P<0.05). Conclusion:Modified Guiling Ganluyin combined with colchicine has the effects in enhancing effect and reducing toxicity, and could improve the clinical symptoms of GA patients with damp-heat accumulation, with a low incidence of adverse reactions.

Effect of Disulfiram Combined with Copper on the Proliferation and Migration of Brain Metastases from Lung Cancer / 医药导报

Objective To investigate the effects of disulfiram combined with copper (DSF /Cu) on proliferation and migration of brain metastases from lung cancer. Methods The cell were divided into blank control group, valproate group (1.0 mmol·L-1 of valproate) , DSF /Cu (1,2,3,4,5 mg /0.17 mg) . Brain metastases from lung adenocarcinoma were incubated 72 hours.The changes of proliferative ability of cancer cells were detected by CCK-8 method, the effect of DSF /Cu on the migration ability of cancer cells was detected by Transwell chamber, and the degree of apoptosis of cancer cells was detected by Annexus V-PI double staining method. Results The ability of proliferation was significantly inhibited, the ability of migration was significantly reduced,and the rate of cell apoptosis was significantly increased in each dose group of brain metastases from lung adenocarcinoma compared with the blank control group. With the increase of DSF /Cu dose, its ability to inhibit the proliferation and migration of metastases cancer cells and induce apoptosis of metastases cancer cells has increased gradually. Conclusion DSF /Cu can inhibit the proliferation and migration of brain metastases from lung adenocarcinoma and induce apoptosis. DSF is expected to be a new method of the combined treatment of brain metastases cancer.

Clinical Observation on Modified Huqianwan in Treatment of Rheumatoid Arthritis Liver-kidney Yin Deficiency Syndrome / 中国实验方剂学杂志

Objective: To explore the clinical efficacy and safety of modified Huqianwan in treatment of rheumatoid arthritis (RA) liver-kidney Yin deficiency syndrome, and investigate its possible mechanism. Method: A total of 184 patients with RA liver-kidney Yin deficiency syndrome were randomly divided into Chinese medicine group (62 cases), western medicine group (57 cases) and integrated Chinese and western medicine group (65 cases) according to the digital table method. The patients in Chinese medicine group were treated with Huqianwan; the patients in western medicine group were treated with methotrexate tablets and leflunomide tablets; and the patients in integrated Chinese and western medicine group received Huqianwan+methotrexate tablets and leflunomide tablets,with a treatment course of 12 weeks in all groups. The pain visual analog scale (VAS), swelling and tenderness scores of 28 joints (DAS28), average hands grip strength, morning stiffness time and liver-kidney Yin deficiency syndrome differentiation of traditional Chinese medicine (TCM) syndrome score were compared between groups before and after treatment. The changes of erythrocyte sedimentation rate (ESR), C reactive protein (CRP), immunoglobulin (Ig) G, tumor necrosis factor-alpha (TNF-α) and rheumatoid factor (RF) were detected in all groups after treatment. Clinical efficacy, and incidence of adverse reactions such as gastrointestinal response, liver injury, leukopenia, serum glutamate oxaloacetic aminotransferase (GOT) and platelet (PLT) level changes were compared between the groups, so as to investigate the efficiency and safety of the different medicines. Result: After 12 weeks of treatment, the total clinical effective rate was 79.0%, 80.7%, and 92.3% respectively in Chinese medicine group, western medicine group, and integrated Chinese and western medicine group; the integrated Chinese and western medicine group was significantly better than the Chinese medicine group and western medicine group (PPPPConclusion: The efficacy in treating RA liver and kidney Yin deficiency syndrome shows no significant difference between modified Huqianwan and methotrexate tablets+leflunomide tablets. In the treatment of RA liver and kidney Yin deficiency syndrome, Huqianwan has fewer adverse reactions. Huqianwan combined with methotrexate tablets+leflunomide tablets is superior to that in methotrexate tablets+leflunomide tablets in treatment of RA liver-kidney Yin deficiency syndrome.

Problems that should be emphasized in the diagnosis and treatment of tubal pregnancy / 中国实用妇科与产科杂志

Tubal pregnancy is common and is in lackof detailed clinical research.It seems to be simple todiagnose and easy to handle,but once it is ignored,itcan lead to serious consequences and even death.Withthe changes in today′s social environment and people′sconcept,and with the widespread use of IVF and othertechnologies,new cases have emerged in tubal preg-nancy.We should re-emphasize the diagnosis andtreatment of tubal pregnancy.

The effect of blood glucose levels on the prognosis of acute severe traumatic brain injury patients / 中华内分泌外科杂志

Objective To explore the relationship between different blood glucose levels and prognosis in patients with acute severe craniocerebral injury.Methods Clinical data of 120 patients with acute severe craniocerebral injury from Jun.2014 to Jun.2017 in Department of Neurosurgery,Tongren Hospital of Wuhan University were analyzed retrospectively.The patients were divided into the group of acute severe craniocerebral injury and the group of acute extra-severe craniocerebral injury according to the Glasgow coma score (GCS).Blood glucose levels were detected at the time of admission,the 1st day,the 3rd day,the 7th day and the 14th day after operation.According to the blood glucose levels on admission,the patients were divided into the normal blood glucose group,the blood glucose value of 6.1-10.0 mmol/L group,the blood glucose value ＞ 10.0 mmol/L group.The prognosis was evaluated by Glasgow Outcome Score (GOS) 3 months after discharge.The relationship between the blood glucose levels and GOS score in different groups was analyzed.Results The blood glucose levels in the group of acute extra-severe craniocerebral injury were higher than those in the group of acute severe craniocerebral injury,and the difference was statistically significant (P＜0.05).Of the patients with acute severe craniocerebral injury,54 had good prognosis,and 16 had poor prognosis.Of the patients with acute extra-severe craniocerebral injury,28 had good prognosis,and 22 had poor prognosis.The rate of good prognosis were 77.1％ and 56％ respectively,and the difference had statistical significance (P=0.014,x2=6.025).The good prognosis of patients with normal blood glucose group was 23 and the poor prognosis was 4,with a good prognosis rate of 85.2％ (23/27).Among patients with blood glucose of 6.1-10.0 mmol/L,30 had good prognosis and 8 had poor prognosis,with a good prognosis rate of 78.9％(30/38).Among patients with blood glucose ＞10.0 mmol/L,31 had good prognosis and 24 had poor prognosis,with a good prognosis rate of 56.4％ (31/55).With the increase of blood glucose,the good prognosis rate gradually decreased and the poor prognosis rate gradually increased,and the difference was statistically significant(P=0.010,x2=9.283).Conclusion Blood glucose level has influence on the prognosis of patients with acute severe craniocerebral injury,and the good prognosis of patients with acute severe craniocerebral injury is severely affected by hyperglycemia.

Effects of docosahexaenoic acid on cell apoptosis, invasion and migration of cervical cancer cells in vitro / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the effect of docosahexaenoic acid (DHA) on apoptosis, migration and invasion of cervical cancer cell lines.</p><p><b>METHODS</b>cervical cancer cell lines Hela and Siha in logarithmic phase were treated different concentrations of DHA. The morphological changes of the cells were observed microscopically and cell apoptosis was observed using Hoechst 33258 fluorescent staining. MTT assay was used to evaluate the effect of DHA in suppressing cell growth, and flow cytometry was employed to analyze the changes of cell apoptotic rate following DHA stimulations. Wound healing assay and Transwell migration assay were used to evaluate the migration of the cell lines. The expression levels of Bax, Bcl-2 cleaved caspase3, MMP-9 and VEGF proteins were detected by Western blotting.</p><p><b>RESULTS</b>DHA exposure of the cells caused obvious morphological changes and dose-dependently increased the number of apoptotic bodies in the cells. MTT assay showed that DHA inhibited the growth of the cancer cells in a time- and concentration-dependent manner. DHA also effectively suppressed migration and invasion of the cancer cells. The cells exposed to DHA showed significantly down-regulation of Bcl-2, MMP-9 and VEGF proteins and up-regulation of cleaved-caspase 3 and Bax.</p><p><b>CONCLUSION</b>DHA can promote cervical carcinoma cell apoptosis by down-regulating the anti-apoptotic proteins Bax, Bcl-2 and cleaved-caspase3 and suppress cell invasion by decreasing MMP-9 and VEGF expressions.</p>

Establishment of Aortic Regurgitation Model in Chinese Miniature Pigs Under Echocardiography Guidance / 中国循环杂志

Objective: To establish the aortic regurgitation model in Chinese miniature pigs under echocardiography guidance. Methods: The animal models were established by following steps: general anesthesia, measuring body weight and then receiving echocardiography examination to exclude aortic valve lesions; carotid artery was exposured by surgery, catheter was sent to aortic sinus with stiff guide wire penetrates and the position of catheter was adjusted to obtain aortic valve damage. The aortic valve injury and regurgitation were evaluated by ultrasound; then the pigs were killed and the heart was taken to observe aortic valve damage. Results: A total of 7 pigs were used including 4 male and 3 female with the mean body weight of (24.7 ± 3.6) kg. Aortic regurgitation model was successfully established in 5 pigs including 1 mild, 1 mild-moderate, 2 moderate, 1 severe aortic valve regurgitation, and 4 were with valve lealfets perforation and 1 with lealfets tearing. Conclusion:①Echocardiography can smoothly guide wire go through aortic valve and make valve damage at different degrees, it is reliable to establish aortic valve regurgitation model in experimental pigs.②Echocardiography may clearly identify the position and degree for aortic valve injury.

Characterization of pumpkin polysaccharides and protective effects on streptozotocin-damaged islet cells / 中国天然药物

The polysaccharides from pumpkin fruit (PP) were obtained and purified by hot-water extraction, anion-exchange chromatography, and gel column chromatography. The physicochemical properties of PP were determined by gel filtration chromatography, gas chromatography, fourier transform infrared (FTIR) spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy. Results indicated that the molecular weight of PP was about 23 kDa and PP was composed of D-Arabinose, D-Mannose, D-Glucose, and D-Galactose with a molar ratio of 1 : 7.79 : 70.32 : 7.05. FTIR and NMR spectra indicated that PP was the polysaccharide containing pyranose ring. Additionally, PP protected islets cells from streptozotocin (STZ) injury in vitro via increasing the levels of super-oxide dismutase (SOD) and malondialdehyde (MDA) and reducing the production of NO. The experiment of reverse transcriptase-polymerase chain reaction further proved that PP inhibited apoptosis via modulating the expression of Bax/Bcl-2 in STZ-damaged islet cells. In conclusion, PP could be explored as a novel agent for the treatment of diabetes mellitus.

Treatment and outcome of epileptogenic temporal cavernous malformations / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The aim of this study is to explore the treatment and outcome of epileptogenic temporal lobe cavernous malformations (CMs).</p><p><b>METHODS</b>We analyzed retrospectively the profiles of 52 patients diagnosed as temporal lobe CMs associated with epilepsy. Among the 52 cases, 11 underwent a direct resection of CM along with the adjacent zone of hemosiderin rim without electrocorticogram (ECoG) monitoring while the other 41 cases had operations under the guidance of ECoG. Forty-six patients were treated by lesionectomy + hemosiderin rim while the other six were treated by lesionectomy + hemosiderin rim along with extended epileptogenic zone resection. The locations of lesions, the duration of illness, the manifestation, the excision ranges and the outcomes of postoperative follow-up were analyzed, respectively.</p><p><b>RESULTS</b>All of the 52 patients were treated by microsurgery. There was no neurological deficit through the long-term follow-up. Outcomes of seizure control are as follows: 42 patients (80.8%) belong to Engel Class I, 5 patients (9.6%) belong to Engel Class II, 3 patients (5.8%) belong to Engel Class III and 2 patients (3.8%) belong to Engel Class IV.</p><p><b>CONCLUSION</b>Patients with epilepsy caused by temporal CMs should be treated as early as possible. Resection of the lesion and the surrounding hemosiderin zone is necessary. Moreover, an extended excision of epileptogenic cortex or cerebral lobes is needed to achieve a better prognosis if the ECoG indicates the existence of an extra epilepsy onset origin outside the lesion itself.</p>

Antimicrobial susceptibility of Streptococcus sp. to quinupristin-dalfopristin in China / 生物医学与环境科学（英文）

This study aimed to determine the in vitro activity of quinupristin-alfopristin against Streptococcus sp. isolated in China. This agent is not yet available for clinical use, but it has been tested against a high proportion of resistant Staphylococcus aureus strains. A total of 156 streptococcal isolates, which were recovered from various geographic areas and diseases, were tested using the Etest (AB Biodisk, Solna, Sweden). Quinupristin-alfopristin showed excellent activity against all of the tested streptococci isolates. These results provide useful data for the clinical use of quinupristin-alfopristin in China.

Effect of soft contact lens curvature on dry eye of flight attendants / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To discuss the effect of wearing customized curvature soft corneal contact lens to dry eye degree of flight attendants. METHODS:Eighty cases (160 eyes) of flight attendants from China Southern were divided into two groups:control group 40 cases ( 80 eyes ) wearing ready-made Bausch soft corneal contact lens ( curvature 8. 4 ); the experiment group 40 cases ( 80 eyes ) , wearing Bausch soft corneal contact lens with customized curvature. Tear break-up time ( BUT ) , Schirmer Ⅰ test ( SⅠt ) and fluorescein ( FL ) staining were as dry eye evaluation index. The results was statistically analyzed. RESULTS: BUT, SⅠt average shortening value of the experimental group were less than that of the control group, there was statistical significance (PCONCLUSION: Wearing customized curvature soft corneal contact lens can prevent the flight dry eye more effectively than fixed curvature product.

In vitro protein expression profile of Campylobacter jejuni strain NCTC11168 by two-dimensional gel electrophoresis and mass spectrometry / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To investigate the protein expression profiles of the major food-borne pathogen Campylobacter jejuni NCTC11168.</p><p><b>METHODS</b>Membrane and soluble cellular proteins were extracted from the genome-sequenced C. jejuni strain NCTC11168. Protein expression profiles were determined using two-dimensional gel electrophoresis (2-DE). All the detected spots on the 2-DE map were subjected to matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF/TOF) analysis.</p><p><b>RESULTS</b>A total of 537 and 333 spots were detected from the whole cell and membrane-associated proteins of C. jejuni NCTC11168 cultured on Columbia agar medium at 42 °C by 2-DE and Coomassie Brilliant Blue staining, respectively. Analyses of whole cell and membrane-associated proteins included 399 and 133 spots, respectively, which included 182 and 53 functional proteins identified by MALDI-TOF/TOF analysis.</p><p><b>CONCLUSION</b>The comprehensive expression protein profiles of C. jeuni NCTC11168 obtained in this study will be useful for elucidating the roles of these proteins in further pathogenesis investigation.</p>

Secreted protein HP1286 of Helicobacter pylori strain 26695 induces apoptosis of AGS cells / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>Secreted proteins of Helicobacter pylori (H. pylori) interact with gastric epithelium cells and may contribute to cell damage. Considering the fact that HP0175 and hypothetical conserved protein HP1286 are included in the group and that HP0175 is a well-known apoptosis-induced factor, the present study aims to clarify whether HP1286 plays a role in bacterial pathogenicity or even functions as an apoptosis-induced factor in human stomach.</p><p><b>METHODS</b>Two genes encoding HP1286 and HP0175 were cloned into pET32a vector and expressed as recombinant proteins in Escherichia coli (E. coli) BL21. Signal peptide sequences were not included. The recombinant proteins were purified with His SpinTrap and desalted by using HiTrap Desalting. Immunoreactivity of the proteins was determined by Western blot. Human gastric epithelial cell AGS was challenged with these endotoxin-free proteins; and apoptosis of cells was assayed with the Cell Death ELISA kit.</p><p><b>RESULTS</b>Recombinant proteins and their respective products whose N-terminal his-tag were removed with thrombin were recognized by serum from the patient infected with H. pylori. Apoptotic AGS cells challenged by HP1286 of H. pylori 26695 were four times more than untreated cells. In addition, apoptosis-induced ability of HP1286 of SS1 was not as strong as that of H. pylori 26695 strain.</p><p><b>CONCLUSION</b>HP1286 of H. pylori 26695 induces apoptosis of AGS cells in a time-dependent manner, however the apoptosis-induced ability of HP1286 may differ due to variations between different strains.</p>

Effect of Ganoderma lucidum polysaccharides on oxidative stress of hyperlipidemic fatty liver in rats / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effect of Ganoderma lucidum polysaccharides on oxidative stress of hyperlipidemic fatty liver in rats.</p><p><b>METHOD</b>Seventy-two SD rats were randomly divided into six groups, namely the normal control group (NG), the model group (MG), the G. lucidum polysaccharides groups of low, middle and high dose (GLPs-LG, GLPs-MG, GLPs-HG) and the Simvastatin group (SV). The rats were fed with high fat diet to establish the model of hyperlipidemic fatty liver in rats. After administration for 12 weeks, rats in each group were tested with the following indexes: total cholesterol (TC), triglyceride (TG), high density lipoprotein-cholesterol (HDL-C) and low density lipoprotein-cholesterol (LDL-C), malondialdehyde (MDA), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and total antioxidant capacity (T-AOC) in serum as well as the contents of SOD, MDA, GSH-Px and T-AOC in hepatic tissues. Histopathological changes of hepatic tissues were observed under light glass.</p><p><b>RESULTS</b>The contents of TC, TG and LDL-C were significantly increased in the model group (P < 0.01). Compared with the model group, both the GLPs-M group and the GLPs-H group showed significant decreases in TC, TG and LDL-C (P < 0.05 or P < 0.01), while the GLPs-H group showed a notable increase in HDL-C (P < 0.05). Compared with the model group, both the GLPs-M group and the GLPs-H group showed significant decreases in MDA (P < 0.05 or P < 0.01) and notable increases in SOD, GSH-Px, T-AOC (P < 0.05 or P < 0.01). The GLPs-M group and the GLPs-H group proved a remarkable alleviation in fatty degeneration of hepatic cells.</p><p><b>CONCLUSION</b>G. lucidum polysaccharides can significantly reduce the blood fat level of hyperlipidemic fatty liver in rats and effectively inhibit oxidant stress, showing the effect on preventing and treating hyperlipidemic fatty liver in rats to some extent.</p>