[Changes of total flavonoids and rutin contents in different parts of wild and cultivated Hypericum attenuatum ].

OBJECTIVE: To determine the content of total flavonoids and rutin in different parts of wild and cultivated Hypericum attenuatum. METHODS: Ethanol ultrasonic extraction method was used to extract total flavonoids and rutin in different parts of Hypericum attenuatum. With rutin as reference substance, UV spectrophotometry and high performance liquid chromatography were applied to deter- mine the total flavonoids and rutin content in Hypericum attenuatum samples (leaves, stems and flowers). RESULTS: There were great differences between the total flavonoids in different parts of Hypericum attenuatum that the content of flavonoids in the wild one was leaves > flowers > stems; The content of flavonoids in the cultivated was leaves > flowers > fruits > stems. The content of flavonoids in each part of cultivated Hypericum attenuatum was higher than that in the wild,but did not reach a statistically significant level,while the difference of content of rutin was extremely significant. CONCLUSION: There are differences between the content of flavonoids in different parts of Hypericum attenuatum. The highest content is found in leaves and the lowest in stems. The content of flavonoids in cultivated Hypericum attenuatum is higher than that in the wild.

Use of evidence-based pharmacotherapy for secondary prevention of coronary heart disease: a Chinese medicine hospital versus a general hospital / 中国结合医学杂志

<p><b>OBJECTIVE</b>To determine differences in adherence to secondary prevention guidelines (pharmacological interventions) among coronary heart disease (CHD) patients between a Chinese medicine (CM) hospital and a general hospital in a Chinese city.</p><p><b>METHODS</b>Medical records of 200 patients consecutively discharged from the CM hospital and the general hospital for CHD were reviewed to determine the proportions of eligible patients who received antiplatelet agents, β-blockers, angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) and statins at discharge. The effects of patient characteristics and hospital type on the use of these medicines were estimated using logistic regression models.</p><p><b>RESULTS</b>Patients discharged from the CM hospitals were older; more likely females; had greater history of hyperlipidemia, cerebrovascular diseases and less smoker (P<0.01 or P<0.05). They were less likely to receive coronary angiography and percutaneous coronary intervention, and had a longer length of stay than those discharged from the general hospital (P<0.01 or P<0.05). There were no significant differences in antiplatelet agents (96% vs. 100%, P=0.121) or statins (97.9% vs. 100%, P=0.149) use between the CM hospital and the general hospital. In multivariable analyses that adjusted for patient characteristics and hospital type, there was no significant difference in use of β-blockers between the CM hospital and the general hospital. In contrast, patients discharged from the CM hospital were less likely to receive ACE inhibitors/ARBs compared with those discharged from the general hospital (odds ratio: 0.3, 95% confidence interval: 0.105-0.854).</p><p><b>CONCLUSION</b>In this study, the CM hospital provides the same quality of care in CHD for prescribing evidence-based medications at discharge compared with another general hospital except for ACE inhibitors/ARBs use.</p>

An investigation of oxidative DNA damage in pharmacy technicians exposed to antineoplastic drugs in two Chinese hospitals using the urinary 8-OHdG assay / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To investigate oxidative DNA damage in pharmacy technicians preparing antineoplastic drugs at the PIVAS (Pharmacy Intravenous Admixture Service) in two Chinese hospitals.</p><p><b>METHODS</b>Urinary 8-OHdG served as a biomarker. 5-Fluorouracil (5-FU) concentrations in air, masks and gloves were determined. The spill exposure of each PIVAS technician to antineoplastic drugs was investigated. Eighty subjects were divided into exposed group I, II, and control group I, II.</p><p><b>RESULTS</b>5-FU concentration ratios for gloves and masks in exposed group I were significantly higher than those in exposed group II (P<0.05 or P<0.01). The average urinary 8-OHdG concentrations in exposed group I, control group I, exposed group II, and control group II were 14.69±0.93, 10.68±1.07, 10.57±0.55, and 11.96±0.73 ng/mg Cr, respectively. Urinary 8-OHdG concentration in exposed group I was significantly higher than that in control group I or that in exposed group II (P<0.01). There was a significant correlation between urinary 8-OHdG concentrations and spill frequencies per technician (P<0.01).</p><p><b>CONCLUSION</b>There was detectable oxidative DNA damage in PIVAS technicians exposed to antineoplastic drugs. This oxidative DNA damage may be associated with their spill exposure experience and contamination of their personal protective equipment.</p>

Stereoselective determination of propranolol enantiomer in transgenic cell lines expressing human cytochrome P450 / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To establish a chiro chromatography for studying the stereoselective metabolism of propranolol (PL) in S(9) incubates prepared from transgenic cell lines expressing human cytochrome P450.</p><p><b>METHODS</b>The concentration of each enantiomer in S(9) incubates was determined through precolumn derivatization with GITC, followed by RP-HPLC assay using S-(+)-propafenone as internal standard.</p><p><b>RESULTS</b>Baseline separations among the diastereomers of S(-)-P, internal standard and R(+)-PL were achieved on Shimpack CLC C(18)ODS column, with UV detection and methanol:water:glacial acetic acid (67/33/0.05,v/v/v) as mobile phase. The assay was simple, accurate, precise and specific. The linear range was from 5 to 500 micromol/L for each enantiomer. The limit of quantitation (LOQ) for the method was 5 micromol/L for the S(-)-and R(+)-PL, respectively (n=5, RSD<10%). The analytical method afforded average recoveries of 98.7 and 98.1% for S(-)- and R(+)-PL, respectively. The reproducibility of the assay was good (RSD<10%). The time-dependent studies showed that PL had the stereoselectivity of S-(-)-isomer in metabolism via CYP2C18 and the stereoselectivity of R-(+)-isomer in metabolism via CYP2C9.</p><p><b>CONCLUSION</b>The method allows to study of stereoselective metabolism of PL in vitro.</p>