Acetamides ; metabolism ; toxicity

ObjectiveTo observe the effect of reduced glutathione(GSH) on expression of malondialdehyde(MDA),glutathione peroxidase(GSH-PX) and superoxide dismutase(SOD) after focal cerebral infarction in rats.MethodsRat models of middle cerebral artery occlusion(MCAO) were estabilished with thread after 2-hour ischemia and 6-hour reperfusion.Rats were divided at random into three groups,i.e.,sham-operated,control and treatment group(with GSH 1200 mg/kg) respectively.After the rats model was performed,neurology deficit score,the size of brain infarct region and the change of brain tissue pathologic were evaluated.Contents of MDA and activity of SOD and GSH-PX were detected with spectrophotometer.ResultsCompared with the control group,GSH can ameliorate neurological deficit score and decrease infarct volume induced by MCAO.GSH may reduce contents of MDA and improve activity of SOD and GSH-PX in brain tissue.ConclusionGSH may reduce contents of MDA and improve activity of SOD and GSH-PX so as to enhance capability of eliminating oxygen free radical,and play a neuroprotective effect after cerebral focal ischemia reperfusion.

Objective: To observe the clinical efficacy of herbal cake-partitioned moxibustion for dysmenorrhea due to deficiency cold. Methods: A total of 70 patients with dysmenorrhea who met the inclusion criteria were randomized into a mild moxibustion group and a herbal cake-partitioned moxibustion group by the random number table, with 35 cases in each group. Shenque (CV 8), Zhongji (CV 3) and bilateral Zigong (EX-CA 1) were selected for both groups. The treatment continued for 3 menstrual cycles. The visual analog scale (VAS) and COX menstrual symptom scale (CMSS) were scored in both groups before treatment, after treatment and at the end of the 3rd menstrual cycle after treatment. The clinical efficacy was evaluated at the end of the 3rd menstrual cycle after treatment. Results: After treatment, the clinical efficacy of the herbal cake-partitioned moxibustion group had the tendency to be superior to that of the mild moxibustion group, while there was no statistically significant difference in the overall efficacy between the two groups (P>0.05). The VAS and CMSS scores after treatment and at the follow-up were significantly lower than those before treatment in both groups (all P<0.05). At the follow-up, the VAS scores in both groups had no significant intra-group differences from those after treatment (both P>0.05). The CMSS scores in both groups were significantly lower than those after treatment (both P<0.05). The VAS scores at the follow-up of both groups had no statistical differences from those after treatment (both P>0.05). After treatment, the CMSS score in the herbal cake-partitioned moxibustion group was significantly lower than that in the mild moxibustion group (P<0.05). At the follow-up, there were no statistical differences in the CMSS score between the two groups (P>0.05). Conclusion: The herbal cake-partitioned moxibustion has the same therapeutic efficacy for dysmenorrhea as the mild moxibustion; the two moxibustion methods can significantly improve the concomitant symptoms of dysmenorrhea, and the herbal cake-partitioned moxibustion is little better.

Objective To transplant the umbilical cord mesenchymal stem cells(UCMSCs) derived from human umbilical cord into cisterna magna of hypoxic-ischemic encephalopathy(HIE) rat model,and to observe their survival,proliferation and differentiation in the rat brain.Methods UCMSCs were isolated from human umbilical cord of babies delivered after full-term normal cesarean section,and labeled by bromodeoxyuridine(BrdU).Pregnant rats were randomly divided into experimental group(n=6) and control group(n=1).HIE models were built by ligating both sides of the uterine arteries of full-pregnant rats(21 days) in experimental group rats for 15 minutes.The neonatal rats in experimental group were divided into stem cells group(n=24) and PBS group(n=19) at random.The labeled UCMSCs were injected into cisterna magna of the rats in stem cells group,while PBS was injected into the rats of PBS group.In 1,2,3 and 4 weeks after transplantation,the brain tissue section slides were immunohistochemically stained with antibodies against BrdU,Nestin,neuron specific enolase(NSE) and glial fibrillary acidic protein(GFAP),and thionin.Control group with normal delivery was tested as concurrent control.Results At 1 week after transplantation,BrdU,Nestin,NSE and GFAP positive cells were found in the hippocampal dentate gyrus of the rats in stem cells group rats.The number of BrdU-positive and Nestin-positive cells increased(Pa0.05).The NSE-positive and GFAP-positive cells gradually increased from 1-4 weeks post transplantation and comparisons between groups had statistical significance(Pa

In this study, a platform for long-term and non-invasive blood pressure monitoring is proposed, Its software system and the functions of different program modules in the software system are introduced together with the development methods of the main modules.
Blood Pressure Determination ; instrumentation ; methods ; Blood Pressure Monitors ; Software Design

Objective To investigate the impact of cyclosporine A (CsA) on atrial expression change of L-type calcium channel αlc subunit in a canine model of atrial fibrillation (AF). Methods AF was induced by rapid atrial pacing (400 baets/min) for 8 weeks in adult male dogs and placebo (n=6) or CsA (5 mg·kg-1·d-1, n=6) were orally administered to these animals. Sham operated animals served as normal controls (n=6). The atrial electrophysiological parameters including P wave duration, atrial effective refractory period (AERP) were recorded and analyzed at baseline and 8 weeks later. Animals were scarified at 8 weeks post final electrophysiological examinations and atrial expressions of L-type calcium channel αlc subunit were determined by Western blot. Results Compared to sham group, the P wave duration was significantly prolonged while AERP was significantly decreased in AF and CsA groups (all P <0. 05). AERP was significantly longer in CsA group than that in AF group (P < 0. 05 ). L-type calcium channel αlc subunit expression was significantly downregulated in AF group compared to sham group (P <0. 05) and CsA significantly attenuated this downregulation (P < 0. 01 vs. AF group). Conclusion CsA could attenuate the downreguahion of the L-type calcium channel αlc subunit expression and improve the atrial electrophysiological remodeling in this canine model of AF.

Animals ; Disease Models, Animal ; Hypoglycemia ; chemically induced ; metabolism ; Hypothalamus ; drug effects ; metabolism ; Insulin ; pharmacology ; Intracellular Signaling Peptides and Proteins ; metabolism ; Male ; Neuropeptides ; metabolism ; Orexins ; Rats ; Rats, Sprague-Dawley

Objective To observe the consistency of T-cell receptor (TCR) genes mutation in lymphocytes in rats after irradiation in vivo and in vitro.Methods A total of 48 female rats were randomly divided into 6 equal groups.Peripheral blood samples from them were collected to separate the lymphocytes and then irradiated to X-ray irradiation with the dose rate of 200 cGy/min at the doses of 0,0.5,0.75,1.0,2.0,and 3.0 Gy,respectively.Then all the lymphocyte samples were cultured for 7 days.Flow cytometry with direct immunofluorescence was used to detect the TCR gene mutation.The levels of TCR gene mutant frequency (TCRMF) of different groups were calculated.Results The TCRMF levels of different groups after irradiation in vivo and in vitro all displayed a dose-dependent manner and there were no significant differences in the TCRMF between different dose irradiation groups(t = -1.1-0.3 ,P ＞0.05).Conclusions A consistency of TCRMF after irradiation in vivo and in vitro is proven.The results of TCRMF of peripheral blood lymphocytes irradiated in vitro by flow cytometry can precisely reflect the TCR genes mutation after whole-body irradiation.

Objective To investigate the effects of ciyelosporine-A(CsA).a calcinenrin(CAN)inhibitor,on electrophysiological propertiesof atria in canine tachycardia-induced model of AF.Methods Eighteen healthy adult mongrel canines weighing 17.0 to 23.2 kg(rangedfrom 2 to 4 years old)were randomized to 3 groups,Sham group(no pacemaker was implanted),atrial tachypacing group(ATP group)each group at baseline and after 8 weeks' tachypacing.Measurements included atrial effective refractory period(AERP),conductionvelocity(CV),wave length(WE),atrial fibrillation load and rate-adaptability. Results After 8 weeks' atrial tachypacing,ATP andCsA groups showed significant longer duration of the P wave,shorter AERP,decreased adaptation of AERE slower CV,shorter Wland longer AF duration compared to the shamg roup (all P＜0.05).AERP of the CsA group was longer than that of ATP group (P＜0.05),but there were no differences in rate-adaptability,CV,incidence of induced AF and AF duration between CsA group and ATP group.Conclusions Our results suggest that calcineurin pathway intervention by CsA have a positive effect on tachycardia-inducedelectrical remodeling of atria,but can not prevent or reverse AF.

Objective To explore the roles of clara cell secretory protein(CCSP)and eosinophil cationic protein(ECP)in the pathoge-nesis of bronchial asthma and to evaluate their diagnostic value in asthmatic children.Methods Induced sputum samples were obtained from 31 asthmatic children during chronic persistent period and clinical remission period.According to global initiative for asthma(GINA),the total of 31 cases accepted systemic treatment by inhaling glucocorticoid.The patients included 18 boys and 13 girls aged from 3.7 to 12.0 years,and their average age was 7.6 years.Sputum CCSP concentrations were measured by enzyme-linked immunosorbent assay(ELISA).And the concentrations of sputum ECP were determined with Pharmacia UniCAP system.Results Asthmatic children had significantly lower CCSP levels in sputum during chronic persistent period compared with clinical remission period(P