Quality evaluation of Commelina communis from different origins based on multicomponent content determination combined with chemometrics / 中国中药杂志

This research established a high-performance liquid chromatography(HPLC) method for simultaneous determination of isoorientin, orientin, vitexin, and isovitexin in Commelina communis to conduct content difference analysis and quality evaluation of 62 batches of C. communis from different origins. The HPLC content determination was performed on a Dikma Platisil ODS chromatographic column(4.6 mm×250 mm, 5 μm), with acetonitrile-0.1% formic acid(14∶86) as the mobile phase. The detection wavelength was set at 348 nm, the flow rate was 1.0 mL·min~(-1), and the column temperature was 35 ℃. The differences in origins and quality of 62 batches of C. communis were studied by chemometrics. The results showed that the determination of four components mani-fested a good linear relationship in the range of mass concentration(r>0.999 9), and the average recovery rate was 96.17%-103.0%. The relative standard deviations(RSDs) of precision, stability, and repeatability were all less than 2.0%. The content of four components from high to low was isoorientin>isovitexin>orientin>vitexin. Forty-seven batches of C. communis with clear origins were classified into six categories by chemometrics. C. communis from different origins had different qualities. Generally, C. communis from Western China, Central China, and South of China had superior qualities. The HPLC method established in this study is specific, simple, and efficient, which provides references for the comprehensive evaluation of the quality of C. communis. The chemometrics shows that the qualities of C. communis from different origins are largely different. Isoorientin can be used as an index to determine the content of C. communis, and its content limit should be set no less than 0.023%.

Treatment of pharynx and larynx Penicillium marneffei infection complicated with Pneumocystis carinii pneumonia: a case report and literaure review / 中国人兽共患病学报

In order to increase awareness of infection of Penicillium marneffei combined with Pneumocystis carinii pneu monia,we analysed and discussed the diagnosis and treatment of a P.marneffei combined with Pneumocystis carinii pneumonia and reviewed relevant literaure.Pharynx and larynx P.marneffei infection uozhes logy and molecullar was confirmed by physical examination,sputum culture and biopsy.Pneumocystis carinii pneumonia was diagnosed by CT findings and tested positive by PCR for P.carinii (PC).After antifungal treatment,the patient's symptoms and signs showed significant im provement.In conclusion,to achieve early diagnosis and appropriate treatment,sputum culture,biopsy and chest radiograph are suggested for pharynx and larynx recurrent ulcer which is difficult to heal.