Prevalence of diabetes and prediabetes in northeast Sichuan area / 国际检验医学杂志

Objective To investigate the prevalence of diabetes and prediabetes in northeast Sichuan area.Methods A total of 8 053 adult residents(over 18 years old)from the hospital who had underwent physical examination were recruited in the study.The concentrations of Fasting plasma glucose(FPG),glycated hemoglobin A1c(HbA1C)and blood lipids were measured.Diabetes and prediabetes were defined according to the 2013 American Diabetes Association criteria.Results The FPG and HbA1C concentra-tions increased with age.The overall prevalence of diabetes and prediabetes were estimated to be 8.5% and 39.6% in the adult pop-ulation in northeast sichuan area respectively.The prevalence of diabetes and prediabetes in men were significantly higher than those in women(10.7% vs.5.7%,41.5% vs.37.2%,P <0.05,respectively).Furthermore,the prevalence of diabetes increased with age,and the prevalence of prediabetes had a trend of first enhancement followed by a decline.Conclusion The prevalence of diabe-tes and prediabetes are relatively high in northeast Sichuan area.

Correlation between dissolution in vitro and absorption in vivo of chuanping sustained release tablets / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the correlation between dissolution in vitro and absorption in vivo of Chuanping sustained release tablets.</p><p><b>METHOD</b>The ephedrine, pseudoephedrine were chosen as marker components, dissolution in vitro of Chuanping sustained release tablets in the different pH were tested by the rotating basket method and HPLC; urine drug levels were determined by HPLC and absorption fractions were calculated according to Wagner-Nelson's formula and deconvolution technique.</p><p><b>RESULT</b>The linear regressive equation between the absorption percentage in vivo F and accumulative release percentage in vitro of Chuanping sustained release tablets was established as F(ephedrine) = 1.572 5f-20. 729 (R2 = 0.974 5); F(pseudoephedrine) = 1.237f-0.147 6 (R2 = 0.959 5).</p><p><b>CONCLUSION</b>The results suggested that there was fine correlation between the absorption percentage in vivo and the accumulative release percentage in vitro of Chuanping sustained release tablets.</p>

Evaluation of balanced release of complex components of Chuanping sustained tablets based on fingerprint / 中国中药杂志

To combine fingerprint and drug release rate in vitro, in order to study in vitro release of complex components of Chuanping sustained tablets, compound traditional Chinese medicine preparation. A qualitative determination of the characteristic peaks of the compound preparations were conducted by the fingerprint. The results of the dissolution rate determination under different release conditions showed that the release of three index components (methamphetamine, pseudoephedrine and scopolamine) of Chuanping sustained tablets was less affected by gastrointestinal factors, with similarity factors being more than 80 with unknown component release curves of three major characteristic peaks in the fingerprint. The qualitative determination proved that multiple components of the compound traditional Chinese medicine preparation was dissolved in vitro at similar rates, realizing the balanced release of complex components of the compound traditional Chinese medicine preparation. This study layed a theoretical and experimental basis for quality evaluation for the compound traditional Chinese medicine preparation.