Effect of Tibetan medicine zuotai on the activity, protein and mRNA expression of CYP1A2 and NAT2 / 药学学报

To study the effect of Tibetan medicine Zuotai on the activity, protein and mRNA expression of CYP1A2 and NAT2, three different doses (1.2, 3.8 and 12 mg x kg(-1)) of Zuotai were administrated orally to rats once a day or once daily for twelve days, separately. Rats were administrated orally caffeine (CF) on the second day after Zuotai administration, and the urine concentration of CF metabolite 5-acetylamino-6-formylamino-3-methyl-uracil (AFMU), 1-methyluric acid (1U), 1-methylxanthine (1X), 1, 7-dimethylxanthine (17U) at 5 h after study drug administration was determined by RP-HPLC. The activity of CYP1A2 and NAT2 was evaluated by the ratio of metabolites (AFMU+1X+1U)/17U and the ratio of AFMU/(AFMU+1X+1U), respectively. The protein and mRNA expression of CYP1A2 and NAT2 were determined by ELISA and RT-PCR method, respectively. After single administration of Zuotai 3.8 mg x kg(-1) and repeated administration of Zuotai 3.8 and 12 mg x kg(-1), the activity of CYP1A2 and NAT2 decreased significantly compared with control group and there was no significant difference between other dose group and control group. The protein expression of CYP1A2 was significant lower than that in control group after repeated administration of Zuotai 12 mg x kg(-1), and the mRNA expression of CYP1A2 decreased significantly compared with that of control group after single administration of Zuotai 3.8 mg x kg(-1) and repeated admistration of Zuotai 12 mg x kg(-1), separately. The protein expression of NAT2 decreased significantly compared with that of control group after single and repeated administration of Zuotai 3.8 mg x kg(-1), respectively, and the mRNA expression of CYP1A2 decreased significantly compared with control group after single administration of Zuotai 3.8 mg x kg(-1). This study found that Tibetan medicine Zuotai had significant effect on the activity, protein and mRNA expression of CYP1A2 and NAT2.

Study on cytochrome P450 2C19 (CYP2C19) genetic polymorphism in Qinghai Sala population / 中国药学杂志

OBJECTIVE: To identify the genotype and allele distribution feature of cytochrome P450 2C19( CYP2C19) in Qinghai Sala population. METHODS: The CYP2C19 genotypes of 99 healthy Sala population were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technology. RESULTS: In Qinghai Sala population, CYP2C19 * 1, CYP2C19 * 2 and CYP2C19 * 3 allele frequencies were 56.6%, 29.8% and 13.6%, respectively; CYP2C19 * 1/ * 1, CYP2C19 * 1/ * 2, CYP2C19 * 1/ * 3, CYP2C19 * 2/ * 2 and CYP2C19 * 2/ * 3 genotype frequencies were 30.3%, 36.4%, 16.2%, 6.1% and 11.1%, respectively; CYP2C19 * 3 / * 3 homozygous genotype was not found in this study. CONCLUSION: The genotype distribution of CYP2C19 in Qinghai Sala population is significantly different to Uigu, Li, Bai, Dai, She, Hui and Iran population, but similar to Tu, Du-long, Miao, Zang and Han population. Copyright 2012 by the Chinese Pharmaceutical Association.

RAPD analysis on genetic relationships of Erigeron breviscapus germplasm resources / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the genetic relationships of Erigeron breviscapus at the molecular biology level.</p><p><b>METHOD</b>Thirty seven germplasm resources of E. breviscapus which collected from Yunnan, Sichuang and Guizhou province in 2005 were analyzed by Random amplified polymorphic DNA (RAPD) and cluster analysis based on NTSYS2.</p><p><b>RESULT</b>A total of 10 primers were screened, and 107 bands were amplified, among which 94 (87.85%) bands were found to be polymorphic. Thirty seven germplasm resources of E. breviscapus were clustered into 3 groups at genetic distance 0.36, the I group include in 9 germplasm resources collected from Mile, Qiubei, Luxi, Gejiu, and Yanshan of south east of Yunnan province; the II group included 8 germplasm resources collected from Gucheng, and shangrila of north west of Yunnan province, and Mile and Qiubei of south east of Yunnan province; the III group included in 20 germplasm resources collected from the center of Yunnan province, north east of Yunnan province, Sichuan province, and Guizhou province.</p><p><b>CONCLUSION</b>There were abundant genetic diversity in the germplasm resources of E. breviscapus, and the genetic relationships are closely related to geographical distance where they were collected.</p>

Study on the therapeutic effect of electroacupuncture on migraine and influencing factors / 中国针灸

<p><b>OBJECTIVE</b>To compare therapeutic effects of electrical acupuncture (EA) at Qiuxu (GB 40) and Tianshu (ST 25), and to probe the factors of influencing the therapeutic effect.</p><p><b>METHODS</b>Two hundred and seventy-five cases were randomly divided into the test group of 138 cases treated with EA at Qiuxu (GB 40) and the control group of 137 cases treated with EA at Tianshu (ST 25). Their therapeutic effects were observed and the factors influencing the therapeutic effect were analyzed.</p><p><b>RESULTS</b>The transient effective rate was 70.3% in the test group and 58.4% in the control group with a significant difference between the two groups (P<0.05), and there were very significant differences between the two groups in the therapeutic effects at treatment of 4 weeks, and following-up 3 and 6 months later (P<0.001), the transient analgesic effect of EA at Qiuxu (GB 40) being better. EA had better transient effect on migraine for the mental workers, or the patient with high pain score at treatment, or more frequent attack. The long-term analgesic effect of EA at Qiuxu (GB 40) was better than Tianshu (ST 25).</p><p><b>CONCLUSION</b>The analgesic effect of EA at Qiuxu (GB 40) is better than Tianshu (ST 25) and the profession and conditions of the patient are the factors influencing the therapeutic effect.</p>