OBJECTIVE:To study the pharmacokinetics of domestic zaleplon tablets in Chinese healthy volun?teers.METHODS:20male healthy subjects received a single oral dose of15mg zaleplon tablets.The plasma concentrations of zaleplon were determined by an improved HPLC method.RESULTS&CONCLUSION:The main pharmacokinetic parameters of zaleplon were as follow:C max was55.90?16.20ng/ml,T max was1.05?0.32h,Ke was0.74?0.18h -1 ,T 1/2Ke was1.00?0.29h,AUC 0～8 was123.70?25.64ng?h/ml,AUC 0～∞ was125.20?25.80ng?h/ml.The results are compara?ble to those reported in foreign literature.

In the recent 2 decades,the clinical medical mode has been changed greatly.The experience-based medical mode is gradually replaced by evidence-based mode,ie,evidence-based medicine.Large scale clinical trials provide robust evidence for clinical practice and quality control is critical for the success of one trial.We discuss six facets on this subject,including protocol design,staff training,manual formulating,organization,data management and monitoring.The objective of quality control is to ensure the study conducted according to the protocol,the results are reliable and protect the human rights of participants.

Climate Change ; Health ; Humans ; Risk Adjustment

Acupuncture Therapy ; Female ; Humans ; Middle Aged ; Syringomyelia ; therapy

OBJECTIVETo explore the optimal intervention time of acupuncture and moxibustion in the treatment of peripheral facial paralysis.

METHODSTwo hundred and four cases of peripheral facial paralysis were collected in clinic for retrospective analysis. According to the time between the disease onset and the intervention of acupuncture and moxibustion, 3 groups (groups A, B and C) were divided. In group A, the treatment was given in 1 to 3 days after onset; in group B, the treatment was given in 4 to 7 days after onset; in group C the treatment was given in 8 to 10 days after onset. The treatment with acupuncture and moxibustion was applied according to the regular stages of disease in the three groups. At the acute stage, the less points and shallow puncture therapy combined with distal acupoints at the limbs were adopted on the affected side. At the stable stage, the more points and shallow puncture therapy were used on the affected side. At the recovery stage, the deep puncture or penetrating punctures was applied on the affected side. The curative effects was given once every day and the treatment of 10 days made one session. The curative effects were analyzed statistically at the end of three sessions of treatments separately.

RESULTSAt the end of the 1st session of treatment, the total effective rate was 58.8% (40/68) in group A, 69.7% (53/76) in group B and 46.6% (28/60) in group C. At the end of the 2nd session of treatment, the total effective rate was 85.3% (58/68), 90.8% (69/76) and 71.6% (43/60) in group A, B and C separately. At the end of 3rd session of treatment, the total effective rates were 89.7% (61/68), 97.4% (74/76) and 83.3% (50/60) in the three groups separately. The differences were significant statistically at the same session of treatment among three groups (all P<0.05), in which, the results in group B was the best, followed by group A and C in sequence.

CONCLUSIONthe best intervention time of acupuncture and moxibustion is in 4 to 7 days after onset of facial paralysis.

Acupuncture Therapy ; Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Combined Modality Therapy ; Facial Paralysis ; therapy ; Female ; Humans ; Male ; Middle Aged ; Moxibustion ; Retrospective Studies ; Treatment Outcome ; Young Adult

Adolescent ; Diagnosis, Differential ; Diverticulum, Stomach ; complications ; diagnosis ; pathology ; Gastrointestinal Hemorrhage ; diagnosis ; etiology ; pathology ; Gastroscopy ; Humans ; Male

Objective To study the function of ginsenoside Rg3 on proliferation in human breast cancer cell line MCF-7 and effect of ginsenoside Rg3 on Cx26 gene expression and gap junctional intercellular communication (GJIC) in MCF-7, cultured in vitro. MethodsHuman breast cancer cells MCF-7 was exposed to ginsenoside Rg3 at differential concentrations for 24 h, respectively. The cell proliferation inhibition was measured by 3-[4,5-dimethylthiazo-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. The expression of Cx26 mRNA was measured by RT-PCR in experimental groups and control goup. The GJIC function of MCF-7 cell was examined with scrape-loading dye transfer assay.ResultsHuman breast cancer cell line MCF-7 was exposed to ginsenoside Rg3 at a concentration of 10, 20, 40, 80, 160 μg/ml, respectively.The inhibition ratio was 3.1%, 5.2 %, 16.0 %, 26.3 %, 29.1% respectively after 24 h. Compared with control group, the concentration of 40 μg/ml above could significantly inhibit MCF-7 cell proliferation (P ＜0.05), so the experimental groups were exposed to ginsenoside Rg3 at a concentration of 40, 80, 160 μg/ml,respectively. The expression of Cx26 mRNA in every experimental group compared with control group was enhanced when MCF-7 cell was exposed to ginsenoside Rg3 at a higher concentration. It was observed that Lucifer yellow fluorescent staining was limited to a single cell in control group through fluorescent microscope,but Lucifer yellow fluorescent transfered through gap junction cells to neighboring cells, then came into being flake fluorescent staining in experiment groups. ConclusionGinsenoside Rg3 can enhance the expression of Cx26 mRNA in MCF-7 cell and restore the gap junctional intercellular communication, which may be one of important mechanisms of ginsenoside Rg3 in antitumor.

Objective To study the expression and clinical significance of Notch3 and Notch intracellular domain (NICD) in ovarian carcinoma and the effects of N-[N-(3 ,5-difluorophenyl) acetyl-L-alanyl]-S-phenyl glycine t-butyl ester (DAPT), a γ-secretase inhibitor on the proliferation and apoptosis in OVCAR3, A2780 ovarian carcinoma cell lines. Methods Western blot was used to detect the expression of NICD in the tissues from 58 ovarian carcinomas patients and 21 normal ovarie, who were admitted in Peking University First Hospital from July 2006 to June 2009. Immunohistochemistry was also used to detect the expression of Notch3 in these tissues. The relationship with clinical features of ovarian carcinoma was also analyzed. Proliferation of OVCAR3 and A2780 ovarian cancer cells was determined by methyl thiazolyl tetrazolium (MTT) assay, cell cycles and apoptosis and index of proliferation were detected by flow cytometry method. The expression of NICD in OVCAR3 and A2780 cells incubated with DAPT was detected by western blot. Results (1)The expression level of NICD in ovarian carcinomas was significantly higher than that in normal ovarian tissues (1.64 ±0. 19 vs. 0.98 ±0.20;P <0.05). The NICD expression was higher in ovarian cancers with low grade or advanced stage than those in high-middle grade or early stage,respectively (1.90 ± 0. 22 vs. 1.25 ± 0. 21,1.80 ± 0. 21 vs. 1.21 ± 0. 15; all P < 0. 05). The Notch3 protein was stained positively in cytoplasm, nuclear and cell membrane. The expression of Notch3 was higher in ovarian carcinomas than that in normal ovaries [78% (45/58) vs. 24% (5/21); P < 0. 01]. While,there were no stasistical difference in different pathological types, stages, differentiation of ovarian carcinoma. There was no difference between the patients with adjuvant chemotherapy or not. (2)After OVCAR3 and A2780 cells incubated with DAPT 24, 48, 72 hours, NICD expression was significantly lower than that in control group (P < 0. 05). The effects of DAPT inhibited the proliferation and prompted the apoptosis of OVCAR3 and A2780 cells were depended on the concentrations and times. Conclusions Notch3 and NICD may play a key role in the occurrence and progress of ovarian carcinoma. The mechanism of DAPT inhibited the proliferation and prompted the apoptosis of OVCAR3 and A2780 cells may be due to decreased the formation of NICD.

Objective:To investigate the relationship of family history , psychosocial factors of PD (Parkinson's Disease) in a rural population in north China. Methods: A case control study was conducted in rural population in China. Cases (n=77) have been diagnosed by a two-phase screening by neurologists and interviewers in May, 2000. Controls (n=154), randomly selected from the same cohort, who were matched with patients (control/cases ra-tio=2) for sex, age (?5 years). Information of participants' characteristics came from the interview in 2001. Data was analyzed by using conditional logistic regression by SAS 6.12. Results: Family history (OR=13.54) .negative life events (OR=3.02), interpersonal communication (OR=2.10) were associated with a significantly elevated risk for the onset of PD. Conclusion: These results indicate that family history, psychosocial factors were risk factors of PD.