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Objective:To explore the key points and implementation of establishing a whole-process clinical research management system.Methods:Based on the problems in practice, combined with project management experiences, this article analyzed the construction of the whole-process clinical research management system.Results:The establishment of the management system provides a comprehensive and sustainable safeguard for clinical research, as well as the improvement of efficiency and quality of clinical research.Conclusions:The establishment of an effective whole-process management system for clinical research project is a useful exploration of the research service model in China.
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Objective To investigate whether the effect of rabeprazole in treating gastroesophageal reflux disease is related to CYP2C19 gene polymorphisms.Methods 278 patients with gastroesophageal reflux disease confirmed by endoscopy and proton-pump inhibitor testing were enrolled in this study,including non erosive reflux disease (NERD) in 122 cases,the reflux esophagitis (RE) in 98 cases and Barrett esophagus in 58 cases.They were treated with rabeprazole for 8 weeks.GerdQ scores before and after the treatment were completed,endoscopy was performed again in patients with RE after treatment.The blood CYP2C19 genotyping was detected by matrix assisted laser desorption ionization time of flight mass spectrum(MALDI-TOF-MS).Results According to the genotype of CYP2C19,they were divided into extensive metabolizers,intermediate metabolizers and poor metabolizers,accounted for 39.57%,42.45% and 17.98%,respectively.There was no significant difference in GerdQ scores of three groups before treatment,and also had no significant difference after 8 weeks treatment,but in each subgroup GerdQ scores after treatment was decreased significantly than before treatment.The total effective rate of 98 patients with RE by endoscopy was 86.73%,but there was no significant difference in total effective rate of the three groups after treatment.Conclusion Rabeprazole is effective in the treatment of gastroesophageal reflux disease.Moreover,rabeprazole is less affected by CYP2C19 genotype and therefore its curative effect is more stable.
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<p><b>OBJECTIVE</b>To study the chemical constituents of Viola tianshanica.</p><p><b>METHOD</b>Compounds were isolated by silica column, pharmadex LH-20 column and polyamide column, and their structures were elucidated by UV, IR, ESI-MS and NMR.</p><p><b>RESULT</b>Six compounds were isolated and identified as daucosterol (1), kaempferol-7-O-beta-D-glucopyranoside (2), kaempferol- 3-O-beta-D-glucopyranoside (3), isorhamnetin-3-O-beta-glucoside (4), kaempferol (5) and quercetin (6).</p><p><b>CONCLUSION</b>Compounds 2-5 were isolated from this plant for the first time.</p>
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Plant Extracts , Viola , ChemistryABSTRACT
Objective: To study the specificity of the determination method for catechin and epicatechin in Catechu. Method: Contents of catechin and epicatechin in 7 kinds of crude drugs and 3 kinds of preparations of Catechu were determined. Results: As sampling 100 times as much as Catechu, catechin and epicatechin could be both detected in Semen Arecae, and catechin could be detected in Radix et Rhizoma Rhei, Herba Ephedrae and Radix Sanguisorbae. Conclusion:This method can be used for the quality control of Catechu and its preparations and is of specificity.
