OBJECTIVE: Polyurethane (PU) and silicon rubber have good biocompatibility, excellent mechanical properties, easy processing and controlled properties, etc. Therefore, their researches exhibit an important significance in the designs of the medical appliance and body apparatus.DATA SOURCES: The computer respectively indexed the database articles of abroad El, SCI, CA, Science Direct (Elsevier) and Chinese periodical full text from January 1995 to May 2006, the indexed words were "Silicon rubber, polyurethane, medical materials", the article language category was limited respectively in English and Chinese.STUDY SELECTION: The relevant articles (full text) that meet the study were selected by the first trial. Inclusion criteria: ① Related to silicon rubber and polyurethane. ② The medical rubber apparatus and body organ design. Exclusion criteria: The repetitive studies.DATA EXTRACTION: Collect totally 122 relevant articles that use the medicinal rubber materials, and expel the repetitive or similar research,therefore 16 articles meeting the request.DATA SYNTHESIS: ① Medicinal gum, hose and other products: The medical stopper used for sealing is requested to have the flexibility,resistant to cold, water, oil and disinfectant, and pinprick can still keep the original closeness and gastightness, etc. ② The abroad body organs: The material of repairing fracture, skull, meninges, bridge, auricle, mandible,windpipe, tear bolt, lung membrane, heart valve, stomach, intestine,peritoneum, penis, knuckle, muscle, knee membrane, skin and breast. ③ The research and expectation of the medicinal silicon rubber and polyurethane offer more medicinal apparatus and body organ.CONCLUSION: The study of the medicinal silicon rubber and polyurethane make people design and produce more cheap artificial organ and medicinal apparatus. More materials were applied to the clinic, so that satisfy the demand of many patients.

[Objective] To investigate the antibiotic resistance and nosocomial infections status of Staphylococcus aureus(SAU)and provide scientific evidence for disease diagnosis and reasonable use of antibiotics.[Methods]The clinical isolates were identified by VITEK-2 compact.AST-GP61 was used to detect the antibiotic susceptibility.[Results] Among 310 S.aureus isolates,SAU was isolated from ICU and department of dermatology,from sputum/throat and secretion.The drug sensitivity rate to glycopeptide antibiotics and linezolid was 100%,the incidence of oxacillin-resistant S.aureus was 53.1%.[Conclusions] S.aureus showed multidrug resistance to the commonly used antibiotics,while curing infections caused by oxacillin-resistanct S.aureus,Vancomycin,teicoplanin and linezolid were the best choice.

Objective To investigate the effects of valsartan on insulin resistance of type 2 diabetes in patients with Ⅰ hypertension.Methods Newly diagnosed 152 patients of type 2 diabetes with Ⅰ hypertension were randomly divided into treatment group and control group.The treatment group and control group undergone lifestyle changes( diet and adequate exercise) for two weeks.After that,the control group were given Diltiazem,while the treatment group were given valsartan,an angiotensin receptor blocker(ARB) drugs.Both groups were treated for 8 weeks.Fasting plasma glucose (FPG) and fasting plasma insulin (FINS) before and after treatment in both groups were determined.Homeostasis model assessment evaluation of insulin resistance index(HOMA-IR) and insulin sensitivity index (IAI) were carried out and compared between the two groups.Results After 8 weeks of treatment,HOMA-IR in the treatment group was significantly decreased compared with the control group ( P ＜ 0.01 ),while IAI was significantly increased( P ＜ 0.01 ).Conclusion Application of valsartan in type 2 diabetes mellitus with Ⅰ hypertension can significantly improve the level of insulin resistance.

Objective To compare the characteristics of coronary artery lesions and ventricular systolic, diastolic and synchronous function of non-ST-segment elevation (NSTEMI) with those of ST-segment elevation myocardial infarction (STEMI) in Chinese. Methods One hundred and sixty-eight consecutive patients with NSTEMI 116 and STEMI 52 were enrolled into this study. Coronary angiography (CAG) was performed within 72 hours in all patients, while the parameters of left ventricular function were measured by equilibrium radionuclide angiography (ERNA) with ventricular phase analysis (PA) within 1 week after acute myocardial infarction. Results (1) The incidences of patients associated with diabetes and old myocardial infarction in NSTEMI group were higher than those in STEMI group (30.77% vs 10.34%; 34.62% P

Anhedonia is the loss of pleasure or lack of reaction to pleasurable stimuli, which is a promising phenotype of depression. In order to explore the potential biological mechanism, the recent ad?vances were summarized from researches focused on depression with anhedonia from neuroanatomy,inflamma?tion and immunology,and molecular genetics. The structural and functional brain imaging showed that the ac?tivity in reward?related brain regions of the depressive disorder with an anhedonia was changed during re?ward?related tasks.In addition,some other genetic studies based on the related neurotransmitter,such as do?pamine, together with the findings from the researches on immunological inflammation, may shed light on finding the potential targets for novel antidepressants,besides the 5?HT.

Objective In order to know the fatty acid content of breast milk in different regions of China. Methods The fatty acid composition of breast milk from 109 lactating women in three regions was analyzed by capillary gas chromatography. Twenty-seven milk samples were obtained from Shanghai urban, 15 samples from Shanghai suburb(Chongming county) and 67 samples from Zhoushan island of Zhejiang province. Results The contents of linoleic acid(LA) and ?-linolenic acid(LNA) in the mature breast milk from Shanghai urban women were (29?6)% and (2.8?0.7)%, respectively, which were significantly higher than that from Shanghai suburb women[LA, (20?3)% and LNA,(2.7?0.8)%] and Zhoushan island women[(20?3)% and (2.5? 0.6)%], whereasthe DHA content of the breast milk from Zhoushan women was (0.61?0.21)%, which was significantly higher than that from Shanghai urban women[(0.51?0.25)%, P

AIM:To observe the effects of Tianma Gouteng Decoction on mRNA expression of L-Type Calcium Channel ?1 C subunit (CaL-?1C) and plasma membrane calcium-ATPase (PMCA1) in vascular smooth muscle cells of spontaneously hypertensive rat (SHR). METHODS:Twelve-week-old SHRs were assigned randomly to 5 groups:group A (treated with Tianma Gouteng Decoction),group B (treated with Tianma Gouteng Decoction excluded concha haliotidis),group C (treated with Nifedipine),group D (treated with concha haliotidis),group E (treated with normal sodium,NS),each group consisted of 9 rats was adminstrated,once a day for 4 weeks and mRNA expression of CaL-?1C and PMCA1 was measured with RT-PCR half-fix-quantify method. RESULTS:After 4-week-treatment,both Tianma Gouteng Decoction,Tianma Gouteng Decoction excluded concha haliotidis and Nifedipine could regulate downward mRNA expression of CaL-?1C in vascular smooth muscle cells and regulate upward mRNA expression of PMCA1 in vascular smooth muscle cells,concha haliotidis has no effect on mRNA expression of CaL-?1C and PMCA1. CONCLUSION:Tianma Gouteng Decoction can regulate downward expression of CaL-?1C,and regulate upward expression of PMCA1 at the same time,and meliorate the Ca 2+ overload in vascular smooth muscle cells with hypertension.

Objective: To analyze the factors affecting the complication of pulmonary atelectasis among children with tracheobronchial tuberculosis (TBTB), so as to provide the reference for the prevention and treatment of pulmonary atelectasis complicated by TBTB. Methods: Children with TBTB admitted to Department of Paediatrics, Linping Division of the Second Affiliated Hospital of Zhejiang University School of Medicine were selected as the study subjects from October 2018 to March 2023. Subjects's basic information, etiological examination results and laboratory testing results were collected using a self-designed questionnaire, and factors affecting the complication of pulmonary atelectasis among children with TBTB were identified using a multivariable logistic regression model. Results: A total of 120 children with TBTB were included, with the age of 6 months to 12 years. There were 33 children at ages of less than one year (27.50%), 71 girls (59.17%) and 25 children with TBTB and pulmonary atelectasis (20.83%). Multivariable logistic regression analysis identified less than one year of age (OR=1.720, 95%CI: 1.126-3.358), type Ⅵ of TBTB (OR=1.669, 95%CI: 1.101-2.236), high level of C-reactive protein (OR=1.887, 95%CI: 1.088-2.686) and high level of procalcitonin (OR=1.844, 95%CI: 1.034-2.654) as risk factors for the complication of pulmonary atelectasis in children with TBTB. Conclusion Less than one year of age, type Ⅵ of TBTB, high level of C-reactive protein and high level of procalcitonin may increase the risk of pulmonary atelectasis in children with TBTB.

Objective To develop a new type of Raman-enhanced substrate for rapid detection of E.coli based on label-free surface-enhanced Raman scattering( SERS) technology.Methods Stober’ s improved method was used to prepare 360 nm silica ( SiO2 ) nanospheres.Prepared gold core-silver shell nanoparticles( Au@Ag) of different size were attached to 360 nm SiO2 to fabricate the nanocomposites ( SiO2-Au@Ag ) that were characterized by transmission electron microscopy (TEM) and UV-visucl light adsorption spectra (UV-Vis).PATP was detected to select SiO2-Au@Ag with optimal SERS effect.This optimal SiO2-Au@Ag was used to obtain the sensitivity of PATP and E.coli detection after a simple mixed culti-vation.Results TEM images showed that Au@Ag aggregated with the size of Au@Ag attached to 360 nm SiO2 .UV-Vis spectra indicated that the maximum absorption of Au@Ag and SiO2-Au@Ag had a red shift with the invrease of Au@Ag size.The experiment results suggested that detection sensitivity of PATP by SiO2-100 nm Au@Ag 10 -10 mol/L, while the lowest detectable E.coli concentration was 105 CFU/ml.Conclusion The 360 nm SiO2 binding with 100nm Au@Ag exhibits great potential for SERS applications.

Objective To investigate the impact of isoniazid (INH)-resistant Mycobacterium tuberculosis (Mtb) on the prevalence and dissemination of multi-drug resistant tuberculosis (MDR-TB).Methods A total of 251 patients diagnosed with tuberculosis in designated hospitals of Guanyun,Jiangsu and Deqing,Zhejiang from 2010 to 2011 were included in the study.The drug susceptibility tests (DST) were performed on all the Mtb isolates available from the sputum cultures.Mycobacteral interspersed repetitive units-variable number tandem repeats (MIRU-VNTR) was conducted for genotyping for all available Mtb isolates.Chi-square test,Fisher exact test,ANOVA and non-conditional Logistic regression modelling were applied for data analysis.Results Among 251 patients with Mtb isolates and DST results available,72 (28.7％) were resistant to INH,including 13 were INH mono-drug resistant.Of the remaining 59 INH-resistant Mtb,34 (13.5％) were resistant to rifampin TB and 25 were resistant to streptomycin and/or ethambutol.The clustering analysis based on MIRU-VNTR genotyping revealed 29 clustered genotypes (including 105 isolates) and 146 unique genotypes (including 119 isolates).Twentyfive clusters contained drug resistant Mtb and 16 clusters of them comprised by 37 INH-resistant isolates and 20 MDR-TB isolates,which accounted for 51.4％ of the INH-resistant isolates and 58.8％ of the MDR-TB isolates.Single factor analysis showed that sex,age,previous tuberculosis treatment history and sputum smear results were all related to INH-resistant tuberculosis and MDR-TB (all P ＜ 0.05).Multiple factors analysis showed that previous tuberculosis treatment history was risk factor of MDR-TB (OR=8.40,95 ％CI:3.342-21.105),while the risk factors of INH-resistant tuberculosis were previous tuberculosis treatment history (OR=3.52,95％CI:1.570-7.910),pulmonary caviry (OR=2.27,95％CI:1.075-4.799) and sputum smear results (OR=0.50,95％CI:0.275-0.892).Conclusions That INH-resistant strain may evolve to the MDR-TB after recent transmission is a possible trend.Patients with previous treatment history and advanced age are at high risk of INH-resistant tuberculosis and MDR-TB.