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Family-based cohort study is a special type of study design,in which biological samples and environmental exposure information of the member in a family are collected and related follow up is conducted.Family-based cohort study can be applied to explore the effect of genetic factors,environmental factors,gene-gene interaction,and gene-environment interaction in the etiology of complex diseases.This paper summarizes the objectives,methods and results,as well as the opportunities and challenges of the family-based cohort study on common chronic non-communicable diseases in rural population in northern China.
ABSTRACT
Family-based cohort study is a special type of study design,in which biological samples and environmental exposure information of the member in a family are collected and related follow up is conducted.Family-based cohort study can be applied to explore the effect of genetic factors,environmental factors,gene-gene interaction,and gene-environment interaction in the etiology of complex diseases.This paper summarizes the objectives,methods and results,as well as the opportunities and challenges of the family-based cohort study on common chronic non-communicable diseases in rural population in northern China.
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Objective To analyze the factors and prognosis of graft recovery after donation after citizens death (DCD) donor renal transplantation.Methods A retrospective analysis of 67 cases of DCD renal transplantation from August 2012 to September 2015 in our hospital was carried out.According to the stability of renal function after operation,the patients were divided into group A (51cases) with stable renal function,and 16 cases in group B (delayed graft function after operation).The clinical data of two groups including age,gender,cause of death,warm ischemia time,type of dialysis,and application of norepinephrine before operation were collected and analyzed.The related factors of graft function recovery were analyzed.Logistic regression analysis was used to analyze the risk factors of graft functional recovery after operation.The 3-month,6-month,1-year and 18-month survival rate after operation in the two groups was compared.Results The causes of death,the time of ischemia,the type of dialysis before operation,the application of norepinephrine before operation,infants and young donors were related factors of graft function recovery (P ＜ 0.05).Logistic regression analysis showed that cerebral hemorrhage death donor,the long thermal ischemia time,the preoperative hemodialysis and the application of norepinephrine before operation were the risk factors of delayed graft function recovery (P＜0.05).The 3-month,6-month,1-year and 18-month survival rate after operation in group A was higher than that in group B,with the difference being statistically significant (P＜0.05).Conclusion Cerebral hemorrhage death donor,the long thermal ischemia time,the preoperative hemodialysis and the application of norepinephrine before operation were the independent risk factors of delayed graft function recovery.And the prognosis of patients with delayed graft function was poor.Clinical risk should be eliminated or reduced in clinical practice,which can effectively prevent the delayed graft function and further improve the prognosis of the patients.
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OBJECTIVE:To establish a method for simultaneously determination of glycyrrhizic acid and glycyrrhetinic acid in Yaotongning capsule. METHODS:HPLC was performed on the column of Agilent TC-C18 with mobile phase of methanol-0.2 mol/L ammonium acetate(gradient elution) at a flow rate of 1.0 ml/min;detection wavelength was 250 nm and column temperature was 25 ℃ and injection volume was 10 μl. RESULTS:The linear range was 0.007 1-0.178 0 mg/ml(r=0.999 8)for glycyrrhizin acid and 0.354 8-8.720 0 μg/ml of glycyrrhetinic acid(r=0.999 8);RSDs of precision,stability and reproducibility tests were no more than 1.74%,average recoveries were 95.49%-100.62%(RSD=1.98%,n=9)and 96.80%-102.26%(RSD=1.83%,n=9),respec-tively. CONCLUSIONS:The method is simple,reproducible,accurate and reliable,and can be used for the simultaneous determi-nation of glycyrrhizic acid and glycyrrhetinic acid in Yaotongning capsule.
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Objective To establish a method for determination of atractylodin in essential oil of Jingfukang preparations by GC and analyze its stability in different solutions. Methods Using HP-5 quartz capillary column (30 m×0.32 mm), programmed temperature was conducted with the FID as detector. The content of atractylodin was determined both at room temperature and 4 ℃ in 20 days. Results The linear range of atractylodin was 4.172-41.72 μg/mL (r=0.999 7). The stability of atractylodin in essential oil of atractylodes was better than in anhydrous alcohol solution or in essential oil of Jingfukang preparation. Conclusion This method is suitable for the quality control of atractylodin in essential oil of Jingfukang preparations. Low temperature is helpful to the stability of atractylodin. The storage period of essential oil of Jingfukang preparations should not be too long.
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0.05 ). The effect of Sin on CaM-PDE was uncertain.It was also shown that there were cooperativity between Nit and TFP and synergism between Que and TFP. These results suggested that Nit and que may act as calmodulin antagonists and might have. different sites on calmodulin in comparison with those for TFP.