Objective To study the health state and service of the elderly in the Tongbai community. Methods The educational degree, disease histories, daily living capability, health care demand and the controlled state of hypertension and diabetes were recorded by questionnaires and physical examination. Results Overweight or obesity (66.1%) was the common disease, hypertension (42.2%) next, then coronary disease (10.0%) and diabetes (9.1%). Nearly 43.3% hypertension patients never or seldom measured their blood pressure. The rate of ideal blood pressure was lower than 25%. 30.4% diabetes patients never or seldom measured their fasting glucose and 69.3% patients never or seldom measured their post-meal glucose. 46.1% of the elderly required one or more kinds of community health services, in which annual health examination was 32.6%, and the next was health guide (23.0%), 53.9% of the elderly had no requirement of community services except medical care. Conclusion The elderly in community had high prevalence and poor control of chronic diseases. They did not fully understand the community health services, which brought the challenges to the medical care, health prevention, health education and reasonable utility of hygiene resources in community health services.

Objective To research the nutritive condition and establish prediction model of chlorophyll-a(Chla) in a surface water source of Zhengzhou, China. Methods The water temperature(WT), Secchi-depth(SD), chemical oxygen demand(CODMn), total nitrogen(TN), total phosphorus(TP), Chla were determined in two sampling sites of the water source by standardized methods from Mar, 2004 to Oct, 2004. Nutritive condition of the water source was analyzed by trophic level index(?)[TLI(?)]. The influence of some environmental factors on Chla was analyzed by correlation analysis and stepwise multiple regression. Chla was predicted by establishing a stepwise multiple regression equation. Results In the spring, summer and autumn, nutritive condition of the water source was from the maximum of mesotropher, the maximum of light eutropher to the minimum of middle eutropher. A positive correlations were found between the standardized Chla and WT, CODMn, TP. A negative correlation was found between the standardized Chla and SD. The equation was ln(CChla+1)=-0.114+0.083 48 WT+6.874 TP+0.193 CODMn(R2=0.900, F=62.674, P

Objectives To investigate the relationship between polymorphisms in the collagen type I alpha 2 (COL1A2),osteocalcin (OC) gene and serum calciotropic hormone levels.Method One hundred twenty-two healthy children aged 8-12 years old were recruited.The Pvu Ⅱ and Rsa Ⅰ polymorphisms in the COL1A2 gene and Hind Ⅲ polymorphism in the OC gene were determined using the PCR-RFLP procedure.Calcitonin(CT) and OC levels in the serum were measured using radioimmunassays.Results The calcium and CT in serum of children carrying the homozygous genotype RR were found to be significantly higher compared to children carrying the homozygous genotype rr (P