Objective: To explore the in vitro inhibition effect of Zuojin pills on 6 cytochrome P450 isoenzymes ( CYP1A2, CYP2C8, CYP2C9, CYP2C19, CYP2D6 and CYP3A4) in human liver microsomes. Methods:The water extract of Zuojin pills, Cop-tidis Rhizoma and Euodiae Fructus was respectively incubated with human liver microsomes in the presence of seven probe substrates of CYP450 isoenzymes, and seven metabolites of cytochrome P450 probe substrate ( paracetamol/CYP1A2, 6α-hydroxypaclitaxel/CYP2C8, 4-hydroxydiclofenac/CYP2C9, 4-hydroxymephenytoin/CYP2C19, dextrorphan/CYP2D6, 6β-hydroxytestosterone/CYP3A4 and 1-hydroxymidazolam/CYP3A4) were simultaneously measured by LC-MS/MS, and the inhibitory effects were evaluated with IC50 value. Results:The IC50 value of Zuojin pills on CYP2D6, CYP1A2 and CYP3A4_T was 11. 6, 77. 4 and 97. 0 μg·ml-1 , respec-tively. The other IC50 values were from 334 to 690μg·ml-1 on CYP2C8, CYP2C9, CYP2C19 and CYP3A4_M isoenzymes. The IC50 value of Coptidis Rhizoma on CYP2D6, CYP1A2 and CYP3A4_T was 5. 8, 36. 8 and 59. 2 μg·ml-1 , respectively. The other IC50 values were from 163 to 476 μg·ml-1 on CYP2C8, CYP2C9, CYP2C19 and CYP3A4_M isoenzymes. The IC50 value of Euodiae Fructus on CYPs was over 107 μg·ml-1 . Conclusion:Zuojin pills shows notable inhibitory effect on CYP2D6, and weak inhibitory effects on CYP1A2 and CYP3A4_T. Coptidis Rhizoma has similar effects on CYPs and may be the main herbal medicine in the formu-la. Therefore, much attention should be paid to the combination of Zuojin pills and the drugs metabolized by human CYP2D6 in clin-ics.

ObjectiveTo investigate the imaging characteristic of DW1,tumor cell apoptosis and proliferation of nasopharyngeal carcinoma (NPC) xenograft transfected hNIS gene after 131Ⅰ treatment.MethodsThe NPC xenograft models were established with CNE-2-hNIS cells(experimental group) and CNE-2 cells(control group) respectively.After i.p.injections 131Ⅰ in the experimental group and control group,the changes of xenograft tumor volume and ADC value were observed in 3,6,12,18,24 days by MR scan.The correlations of changes of ADC with pathological TUNEL,Caspase-3 immunohistochemistry of apoptosis,and Ki-67 proliferation detection were further investigated.Independent samples t-test were compared between the two groups and Pearson linear correlation analysis was used.ResultsThe tumor volume of the experimental group was significantly reduced compared with that of the control group after 131 Ⅰ treatment (t values:8.27-19.46,P ＜0.05 ).DW-MRI showed that in the 3th day after 131Ⅰ treatment,ADC values increased in the experimental group,and ADC values reached the peak in the 6th and 12th day after 131Ⅰ treatment,then ADC values were decreased. ADC values after treatment was positively correlated with apoptotic index ( r =0.72,P ＜ 0.05 ) and caspase-3 positive rate ( r =0.65,P ＜ 0.05) and there was a negative correlation with Ki-67 proliferation index ( r =- 0.71,P ＜ 0.05 ).ConclusionADC values can reflect growth inhibition of NPC xenograft transfected hNIS gene after 131 I treatment.It is possible that DWMRI techniques can be used in early non-invasively monitor the therapy effect of 131Ⅰ treatment of NPC xenografts transfected hNIS gene.

Drug abuse continues to be a serious public health threat worldwide. Most drug abuse prevention research has been conducted with predominantly American or European adolescent populations. Little is known about approaches that work best to prevent the initiation of Chinese adolescent drug use. For targeting risk factors of drug initiation in Chinese adolescents, a school-based health intervention program named "Cognition-Motivation-Emotional Intelligence-Resistance Skills" (CMER) was developed to enhance cognition upon drug use, to decrease motivation of drug use and to improve emotional adjusting and drug resistance skills in this study. A total of 798 students from 3 senior high schools in Wuhan, a city in central China, were assigned randomly to intervention and control groups. The intervention group received the CMER program in which knowledge, development of positive attitude and motivation towards drugs and training of peer resistance skills were basic elements. The immediate impact was compared by measuring the above mentioned elements prior to and three-month after the training session. Students from both groups were asked to complete a self-administered questionnaire. The questionnaire included demographic items, self-reported drug use behavior, cognition, attitude, and motivation associated with the initiation of drug use and resistance skills. Three months after the intervention, significant effects were found on "illegal substance use at least once" (P<0.05) between the intervention and control groups. Immediate effects of the intervention were also found on knowledge, motivation and peer resistance skills (P<0.05), but there was no clear evidence for any effects on attitude towards substance use (P>0.05). It was concluded that the CMER program, which significantly increased the knowledge of drugs and peer resistance skills, was effective in the drug abuse prevention in a sample of school students in Wuhan, China.

Objective To explore the change and clinical significance of plasma levels of thrombomodulin(TM) in children with Kawasaki disease(KD)(n=44) before and after treatmen with intravenous immunoglobulin(IVIG).Methods Enzyme-linked immunosorbent assay(ELISA) was used to detect the plasma levels of TM in children with KD(n=44) before and after treatment with IVIG and in normal control group(n=15),respectively.Children with KD were enrolled from September 2004 to June 2006,one group(n=20) with coronary artery lesions(CALs) and another group(n=24) without CALs.The control were enrolled from heathy children in clinic service.Results The plasma level of TM in KD group before treatment with IVIG was significantly higher than that in control group(P

Objective To demonstrate the X-ray and CT features of breast hydatid disease.Methods Of 11 patients with pathologically confirmed breast Echinococcus hydatid disease were collected and the X-ray and CT image data were analyzed.Results Of 11 patients with hydatid cysts,single cyst was found in 9 patients which one cyst was ruptured due to trauma,multiple cyst in 2 patients.Mammography showed small or large shadow in different size,with low or high density and smooth margin.Calcification was found in 5 and 2 patients with egg shell-like calcification along the wall of cyst,3 patients with spotted calcification within cyst.One case had cavity-like change (annular solar eclipse sign).Cystic lesion with a complete capsule was demonstrated on CT scan in 1 patient.Conclusion Molybdenum target mammography can accurately display the imaging characteristics of hydatid cyst and improve the diagnostic ability of breast hydatid cyst in combination with clinical and epidemiological data.

Objective To explore the relationship between gene mutation and different syndromes of TCM in the early stage of diabetic nephropathy(DN).Methods Sixty-three patients with diabetic nephropathy in the early stage were observed.The methylene tetrahydrofolate reductase(MTHFR)C676T polymorphism was determined by polymerase chain reaction restriction fragment length polymorphism(PCR-RFLP)assay.The levels of homocysteine(Hcy),acidum folicum,fasting glucose,postprandial glucose,glycosylated hemoglobin(HbA1C),urinary albumin excretion rate(UAER),and blood lipid were measured respectively,and the TCM syndromes were recorded.Results Of the 63 patients,19 were genotype CC,17 were genotype TT,and 27 were genotype CT.The genotypic frequency of TT was 27.00%,that of CT was 42.85%,and that of CC was 30.15%.The T allele frequency was 48.41% and C allele frequency 51.59%.The MTHFR C676T mutation was related with plasma Hcy level(P

Objective To investigate the current situation of the prevention and contml of iodine deficiency disorders(IDD)in Hubei Province,SO as to provide a policy.making basis for controlling work of IDD. Methods Using the method of proportional population sampling(PPS),30 eounties were seiected in Hubei Province.In each selected county,1 primary school was chosen.In every primary school,40 pupil8 aged 8～10 years were selected to examine thyroid size,intelligent quotient(IQ),and salt iodine contents at their home.In the selected pupils,2 boys and 2 girls were chosen to determine their urinary iodine contents in each age grouD.Twenty pupils in the above school and 5 housewives ileal"to this school were tested in health education questionnaire. Results The median of salt iodine was 30.1 mg/kg,and the rate of comsuming qualified iodized salt was 96.2% (1154/1200).The rates ofchild goiter were 6.5%(78/1200)by palpation and 4.1%(49/1200)by B ultrasound.The median of urinary iodine Was 358.4μg/L and mean of the IQ was 105.3±14.4.The rate of qualified scores of both students and housewives Was 25.5%(153/600)、90.7%(136/150).Conclusions The current Bituation of iedine nutrition is good.The goal of eliminating IDD has been achieved in Hubei Province.

Objective To explore the effects of astrocytes in cervical spinal cord posterior horn on allodynia in rat models of migraine.Methods Fifty-four male SD rats were randomly divided into 9 groups (each group n =6): blank group,sham surgery group,new inflammatory soup 3 d group (IS 3 d group),new inflammatory soup 7 d group(IS 7 d group),saline group,fluorocitrate (FCA)prevention group,FCA prevention control group,FCA treatment group,FCA treatment control group.Following the IS stimulation in the rat dual matter,Von-Frey hair was used to monitor the pain threshold of periorbital skin.Immunofluorescence technique was used to observe the expression of specific marker of astrocyte,glial fibrilary acidic protein (GFAP),and neuron activation marker,C-fos.Results ①Von-Frey hair study showed the thresholds of IS 3 d group and IS 7 d group were significantly decreased compared with the control group(3 d:5.3 ±0.3 vs 6.4 ±0.3,F =40.15;7 d:3.0 ±0.3 vs 6.3 ±0.2,F =382.5,both P ＜0.01).The pain thresholds of FCA prevention group and FCA treatment group both began to significantly increase at the day 4 (FCA prevention:5.5 ± 5.1 vs 5.1 ± 0.2,F =16.00 ;FCA treatment:4.3 ± 0.2 vs 3.0 ± 0.2,F =138.0,both P ＜ 0.01).②GFAP immunofluorescence showed that the mean optical density (A) values of IS 3 d group and IS 7 d group were significantly increased compared with the control group(3 d:24.5 ±4.4 vs 14.8 ± 2.5,F =32.54;7 d:38.9 ± 7.1 vs 14.6 ± 1.8,F =63.56,both P ＜ 0.01).()C-fosimmunofluorescence showed that mean A value of IS 3 d group was significantly increased compared with the control group (20.4 ± 2.3 vs 8.4 ± 1.1,F =129.0,P ＜ 0.01).The difference was not significant between the IS 7 d group and the control group.Conclusions Activated astrocytes contribute to the facial allodynia induced by chronic dural inflammation.Its inhibitor FCA could both prevent and treat the allodynia behaviour.All of these suggest that astrocytes may not only contribute to the initiation of mechanical allodynia but also the maintenance.

Objective To establish a rapid assay with high sensitivity and specificity based on the sequences for group specific gene (GS) and pathogenicity island pag A gene.Methods The PCR primers and probes were designed after the whole sequence was systemically analyzed with bio-informafion tools and blasted with Genebank database.The amplicons were inserted into plasmids so that they could be used as the standard templates to evaluate the sensitivity of the diagnostic system.This assay was based on TaqMan probes and portable Smartcycle PCR machine.Results The detection level was approximately 100 copies per reaction.There was no cross-reaction with other species of Bacillus.This assay could be completed in one hour in laboratory.Conclusion The duplex TaqMan PCR assay could be used to detect Bacillus anthracis rapidly with high sensitivity and specificity.

In order to study the microstructure characteristics of normal lunate bones,eight fresh cadaver normal lunates were scanned with micro-computed tomography.High-resolution images of the micro-structure of normal lunates were obtained and we analyzed the nutrient foramina.Then nine regions of interest (ROI) were chosen in the central sagittal plane so that we could obtain the parameters of trabecular bones of ROIs.The distal lamellar-like compact structure had statistically significant differences when it was compared with the ROIs in the volar and dorsal ends of the distal cortex.The difference of diameter between the volar and dorsal foramina was significant (P＜0.05).However,there was no significant difference regarding the number.The trabecular bones of the volar and dorsal distal ends had lower intensity than those of the distal central subchondral bone plate.The diameters of the nutrient foramina on the volar cortex were larger than those on the dorsal.This research provided more detailed information about microstructure of normal lunate and the nutrient foramina on cortex,and a reference for further study about diseased lunate.