Cohort studies are important observational epidemiological studies. In this perspective, we briefly introduced several ongoing prospective cohort studies of cardiometabolic diseases in China and in the U. S. , which have shaped our current understanding of cardiometabolic diseases. We hope that this perspective could shed lights on the research of chronic diseases such as diabetes and cardiovascular diseases.

Child ; Humans ; Male ; Thyroiditis, Suppurative ; pathology

The paper firstly introduces the research status of autism and analyzes the gap between China and the US in autism net-work service, proposes using the mainstream socialized Q&A community data in foreign countries to construct an autism Q&A knowledge base.It introduces data collection, management, service process and key issues of the knowledge base and gives application examples of the knowledge services.Construction of this knowledge base can provide targeted and valuable knowledge services to users and can help enhance the retrieval efficiency.

BACKGROUND:Pediatric knee dysfunction is a congenital malformation. Fusion and fixation can effectively eliminate pain, but no joint has active function. Total knee arthroplasty is a safe and effective method to relieve pain and to rebuild its function. With the continuous development of total knee arthroplasty, the type of knee prostheses is more. OBJECTIVE: To study the efficacy of different reconstruction methods for children with stunted knee arthroplasty. METHODS:120 knee stunted children were equaly divided into treatment group and control group depended on the reconstruction, and then al children were given the artificial knee replacement surgery and were completed by the same group of physicians. In the control group, stable fixed platform prosthesis was selected. In the treatment group, the non-limiting prosthetic-posterior cruciate ligament resection of low contact pressure rotating platform prosthesis was given. Operative time, blood loss, postoperative hospital stay, and complications were observed in both groups. Al patients were folowed up for 3 months. Knee function was assessed by Hospital for Special Surgery and American knee society knee score. Multivariate regression analysis was used to analyze the possible factors affecting Hospital for Special Surgery score during folow up. RESULTS AND CONCLUSION: No significant difference in operative time, blood loss and postoperative hospital stay was compared in both groups (P> 0.05). The postoperative overal incidences of inflammatory response, wound healing, periprosthetic infection, and joint stiff were significantly lower in the treatment group than in the control group (P < 0.05). At 3-month folowed-up, Hospital for Special Surgery and American knee society knee score clinical score and functional score were significantly higher in the treatment group than in the control group (P < 0.05). Hospital for Special Surgery score > 80 served as a standard. Multivariate regression analysis results showed that age, type of prosthesis, and varus deformity were the major independent risk factors for affecting joint replacement (P< 0.05). Results indicate that knee arthroplasty for knee dysfunction obtained good prognostic effect. Simultaneously, the non-limiting application of prosthetic reconstruction can effectively reduce postoperative complications and improve knee function.

To a certain extent, itemized government subsidies to public hospitals, primarily used for hospital infra-structure and large equipment investments, can alleviate the financial pressure of development expenditures and thus re-duce the medical expenditure burden on patients. To test the hypothesis, the panel data method has been adopted based on the data of 23 tertiary hospitals. Empirical results find that:(1) increases in itemized subsidies will reduce the burden of medical expenses on patients;(2) conversely, the impact of itemized subsidies on outpatient medical expenses is more sig-nificant. By sharing a portion of public hospital expenses and impacting hospital service providing behavior, itemized sub-sidies help to reduce the burden of medical expenses on patients.

Retrovirus (RV), a major pathogen in acute gastroenteritis in children that may lead to severe disease and heavy burdens on national economy. There is no speciifc drug treatment for the gastroenteritis caused by RV, and vaccine has been identiifed as the most effective intervention to control the associated disease burden. The RV vaccine showed differential effects on different RV infection. In China, epidemiology of RV is more complex hence demands more epidemiologic studies. In this article, we will review the epidemiology of RV in China and further discuss the importance of generalized RV vaccine.

Objective To establish a method for the determination of 17 kinds of free amino acid in serum by the ultra perform-ance liquid chromatography(UPLC) with AQC pre-column derivatization .Methods After proteins precipitation in serum sample by acetonitrile ,free amino acids with aminoquinoline-N-butyl hydroxy diimide and carbamate(AQC) were reacted to generate the struc-tural stable derivative products with ultraviolet absorption .These products were separated by reversed-phase C18 column ,detected with UV detector and quantitated by the external standard .Results The within-run precision of 17 kinds of free amino acid was 2 . 81% -7 .35% and the between-run precision was 7 .44% -15 .40% .The linear relationship was good in the range of 2 .5-250μmol/L ,the linear correlation coefficient was 0 .9960 -1 .0000 ,RSD<3% .Conclusion Using this method for determining 17 kinds of amino acid in serum ,the complete separation is obtained within 10 min ,the results are accurate ,stable and highly efficient .

Objective:To discuss the value of congenital hypertrophy retinal pigment epithelium(CHRPE) in diagnosis of familial adenomatous polyposis(FAP).Methods: Twenty-two FAP patients who have received treatment in our department(January 2001 to June 2003) and 10 patients with sporadic colorectal polys(as control group) were subjected to optical fundus examination.The incidence,morphological feature and distribution of CHRPE were analyzed.Results: Seventeen(81.8%) of the 22 FAP patients were found to have CHRPE in optical fundus.The lesions showed a bilateral and multiple(≥2) distribution along the peripheral vessels with oval pigmentation.One patient was found to have CHRPE in the control group.Conclusion: Optical fundus examination is a highly sensitive and specific adjuvant diagnosis for FAP.It is a safe and effective way for screening FAP in FAP family members.

Objective To investigate the effect of Brocho-Vaxom in curing chronic pulmonary heart disease and the influence of patient's immunity.Methods 58 patients with chronic pulmonary heart disease were randomly divided into two equal groups.Each patient of treatment group took a Brocho-Vaxom capsule(7mg/cap) every.The respiratory tract infection times and duration were observed.The serum IgA,IgG,IgM level were tested by fast immunonephelometry.The sub-type lymphocyte was tested by SP,and the NK cell's activity was tested by MTT.Results The infection time obviously declined in treatment group which the average was (2.5?1.8) in five months as compared with that in the controlled group(P

Objective To establish a method for the determination of phthalates in water by solid phase extraction-gas chromatography-mass spectrometry(SPE-GC-MS).Methods The water samples were extracted and enriched by solid phasse extraction,using 10%methanol-methyl tert-butyl ether as eluant,dimethylphthalate(DMP),diethylphthalate(DEP),dibutylphthalate (DBP)and diethylhexylphthalate(DEHP)were determined by gas chromatography-mass spectrometry with selected ion monitoring mode(SIM).Results The concentration had a good linear range in the range of 0.00~10.00?g/ml,the correlation coefficient was above 0.998.The detection limit of DMP,DEP,DBP and DEHP were 2.7,2.1,1.6 and 2.5 ng/L respectively,the average recovery rate and the RSD of the method were 78.0%～102.5%and 3.3%～7.8%respectively.Conclusion This method,with small amount of solvent,is simple,fast,accurate and is applicable to the determination of phthalates in water.