This study aimed at verifying a previous patented fraud detection method of propolis.In accordance with the patented process,the chromatographic separation was achieved on a Kromasil 100-5C18 column (250 mm × 4.6 mm,5 tm) as mobile phrase A was methanol and mobile phrase B was water (0.5％ phosphoric acid) at the flow rate of 1 mL· min-1 for gradient elution.The detection wave length was 296 nm.Fraudpropolin A was taken as the reference,while the known sources of natural propolis were determined by HPLC.As a result,no fraudpropolin A was detected in the 134 sources of natural propolis at different types or from various origins.It was concluded that the patented process was sound in the fraud detection method of propolis.

Objective This investigation was launched to characterize the relationship between some popular sports and the meniscus injury as well as the impairment extent due to practice duration.Methods The overall 819 women aged 20-49 years from clinic service,hospital,community and gymnasium were selected to join the investigation.The participants practice yoga or any other popular sports including badminton,jogging,climbing hills for at least one hour per day.The subjects were diagnosed with meniscus injury by means of physical examination and MR imaging.All of the subjects were therefore divided into the case(273)and the control(546)pools.The nested case-control model was applied to assess the relative risk of the meniscus.The 181 yoga subjects had been further divided into three sub-groups of 3-6 months,6-12 months and over 12 months,and they were accordingly analyzed with the variables of the age,body mass index(BMI)and Lysholm score.Results The study showed that yoga was associated with higher risk(OR=1.621,P=0.008)of meniscus injury,but the other sports showed no statistically significant risk (badminton 0R=1.028,jogging OR=1.116,climbing hills OR=1.259).The trainees appeared to be statistically different between the groups of 3-6 months and over 12 months on the items of the Lysholm score(P=0.006)and BMI(P=0.003).Conclusion Yoga plays a risky role on the issue of meniscus injury comparing some other popular sports among young women.The yoga players who exercise longer got lower Lysholm scores and lighter weight.

Aim To investigate the protective effect of astragaloside IV (AS-Ⅳ) on human retinal pigment epithelium injury induced by methylglyoxal (MGO), and explore its molecular mechanism.Methods The injury of ARPE-19 cells was induced by MGO and the cell viability was measured by CCK-8 method.The morphology of cell nucleus was analyzed by Hoechst 33342 staining and the cell apoptosis was analyzed by flow cytometry to detect labbled Annexin V-FITC/PI.JC-1 staining and fluorescence probe DCFH-DA were employed to evaluate the change of mitochondrial membrane potential and reactive oxygen species (ROS).The levels of SOD, MDA, caspase-9 and caspase-3 were determined by respective kits.Western blot was used to analyse the expression of Bcl-2, Bax and PARP.Results AS-Ⅳ could significantly inhibit the decrease of cell viability induced by MGO, improve the morphology of cell nucleus, reduce the ARPE-19 cell apoptosis rate and the level of ROS and MDA, and increase the activity of SOD.Furthermore, AS-Ⅳ could enhance mitochondrial membrane potential, the ratio of Bcl-2/Bax and the expression of PARP, and inhibit the activation of caspase-9 and caspase-3.Conclusion AS-Ⅳ may protect ARPE-19 cells from the injury induced by MGO by increasing the antioxidant ability of ARPE-19 cells and inhibiting cell apoptosis.

Objective:To observe the clinical effect of omeprazole based triple therapy in the treatment of children with peptic ulcer.Methods:From September 2016 to September 2018, 86 children with peptic ulcer in the People's Hospital of Qingyuan County were selected in this study.By using the random number table method, they were divided into two groups, with 43 cases in each group.The control group received ranitidine based triple therapy treatment, the observation group was given omeprazole based triple therapy treatment.The treatment course of the two groups was 30 d. The eradication rate, clinical effect, gastrointestinal hormone level and adverse reactions of helicobacter pylori were compared between the two groups.Results:The eradication rate and total effective rate of helicobacter pylori in the observation group were 97.67%(42/43) and 95.35%(41/43), respectively, which were higher than those in the control group[81.40%(34/43) and 79.07%(34/43)], the differences were statistically significant (χ 2=6.081, 5.108, all P<0.05). After treatment, the levels of gastrin and motilin in the observation group were (75.29±8.31)μmol/L, (164.88±15.05)ng/L, respectively, which were lower than those in the control group [(81.07±8.96)μmol/L, (204.15±17.67)ng/L], the differences were statistically significant( t=3.102, 11.095, all P<0.05). The somatostatin level of the observation group was (22.67±3.95)ng/L, which was higher than that of the control group [(18.31±3.31)ng/L], and the difference was statistically significant( t=5.548, P<0.05). There was no statistically significant difference in the incidence of adverse reactions between the two groups(χ 2=0.938, P>0.05). Conclusion:Omeprazole based triple therapy is safe and effective in the treatment of children with peptic ulcer, which is helpful to eradicate helicobacter pylori, reduce gastrin, motilin levels and improve the level of somatostatin.

Stroke is the second leading cause of death worldwide.Atrial fibrillation (AF),the most common sustained cardiac arrhythmia,is an independent risk factor for stroke.AF-caused stroke has a high risk of recurrence and disability,mainly involving large cerebral artery.Thus,stroke prevention in AF becomes a major health priority.Anticoagulant therapy can significantly reduce the risk of ischemic stroke in patients with AF.This review summarized the epidemiological status of AF-related stroke,and reported updated information on AF detection,risk assessment,anticoagulation as well as other preventive measures in stroke prevention in AF,in order to provide theoretical references for clinical practice.At present,the prevention of AF-related stroke still needs to be promoted.Better risk assessment model,as well as cost-effective and safe ischemic stroke prevention methods,are still need to be further studied.

OBJECTIVETo study the molecular epidemiological characteristics of Salmonella in animal source foods in Hunan.

METHODSThe fair trade markets and supermarkets of ten cities were chosen to sample animal source foods for isolating Salmonella in Hunan province in 2010. A total of 692 samples were collected by aseptic sampling, included 159 livestock meats, 152 poultry meats, and 381 aquatic products.Salmonella strains isolated were subjected to stereotyping, antimicrobial susceptibility testing and pulsed field gel electrophoresis (PFGE).

RESULTSSalmonella was detected in 93 of 692 animal food samples with the detection rate of 13.4%. The detection rates of Salmonella in poultry meats, livestock meats and aquatic products were 23.0% (35/152), 22.6% (36/159) and 5.8% (22/381) respectively. Therefore, the detection rate in aquatic products was lower than that of poultry meats and livestock meats (χ(2) = 33.86, P < 0.05; χ(2) = 33.29, P < 0.05, respectively). The serotypes of isolates showed diversity, and Salmonella Derby (33/94, 35.1%) was the predominant serotypes.79.8% (75/94) strains showed resistant to more than one antibiotic used in the test, 31.9% (30/94) strains showed resistant to more than 5 antibiotics. A significant difference was observed for multidrug resistance between Salmonella isolated from poultry (47.2%, 17/36) and livestock meats (22.2%, 8/36) (χ(2) = 4.96, P < 0.05). And the highest resistant rate was found in tetracycline, as high as 62.8% (59/94). All the strains were divided into 69 PFGE subtypes.Furthermore the dominating subtypes were type 7 (6 strains), type 15 (4 strains), type 22 (6 strains).

CONCLUSIONInspection results showed that Salmonella contamination in animal source foods were serious in Hunan province, and the isolates expressed high level resistance to the antibiotics.Furthermore the PFGE results indicated that there were epidemic strains of Salmonella in Hunan.

Animals ; Anti-Bacterial Agents ; China ; epidemiology ; Drug Resistance, Multiple, Bacterial ; Electrophoresis, Gel, Pulsed-Field ; Food Microbiology ; Meat ; microbiology ; Microbial Sensitivity Tests ; Poultry ; microbiology ; Salmonella ; classification ; Salmonella enterica ; Seafood ; microbiology ; Tetracycline Resistance