Objective To explore the effects of cannabinoid receptor agonist WIN55,212-2 preconditioning on spinal cord ischemia reperfusion injury in rats.Methods A total of 32 male Sprague-Dawley rats was randomly divided into four groups (n =8):sham group,control group,dimethyl sulfoxide(DMSO) group which was given intraperitoneally DMSO 0.3 ml 30 min before ischemia reperfusion,and WIN group which was given intraperitoneally WIN55,212-2 1 mg/kg 30 min before ischemia reperfusion.Each rat was neurologically assessed at 24 h and 48 h after reperfusion by Tarlov scale,and the number of normal motor neurons at anterior horn of the spinal cord was recorded.Res uits The Tarlov scale of WIN group was significantly higher than that control and DMSO groups (P ＜ 0.05).There were more normal motor neurons at anterior horn of the spinal cord in WIN group than those in control and DMSO groups (P ＜ 0.05).Conclusions Cannabinoid receptor agonist WIN55,212-2 preconditioning might attenuate spinal cord ischemia reperfusion injury.

OBJECTIVE:To study the effect of different administration time of ibuprofen on the changing characteristics of circadian rhythm about body temperature and plasma concentration in rats.METHODS:60 rats were given single oral administration of ibuprofen at the dose of 50 mg per kilogram at different time(2∶00,6∶00,10∶00,14∶00,18∶00,22∶00) according to a randomized block design with another 10 rats serving as blank control.The effects of ibuprofen on circadian rhythm variations of body temperature and plasma concentration in rats were observed and analyzed using chronogram and cosine method.RESULTS:The body temperature of rats prior to and after administration both showed a significant circadian rhythm,with mean declined only,yet acrophase and amplitude showed no significant differences.The best cosinor curve equation were Yt i=38.7+0.52 Cos(15??ti—86.80?) and Yt i=37.8+0.55 Cos(15??ti—117?) respectively.The plasma concentration also showed a significant circadian change in rats at the different time points of administration.The plasma concentration in light phase was higher than that in dark phase,and the best cosinor curve equation was Yt i=41.95+5.30 Cos(15??ti—272.83?).CONCLUSION:The differences of circadian rhythm were both shown about body temperature and plasma concentration in rats when ibuprofen was orally administered at the different time points.

Objective To explore the features of gallbladder adenomyoma in sonogram, and improve the abilities of diagnosis and differential diagnosis. Method Sonograms of 8 patients with proven gallbladder adenomyoma were retrospectively analyzed and correlated with pathologic findings. Results Eight patients had sonographic evidence of localized intramural nodular,which were round-like and hypoechoic,with anechoic space and tiny bright echos, confined almost exclusively to the fundus of gallbladder. Five patients were also evident with associated gallstones and chronic cholecytitis. Conclusion Sonograms of gallbladder adenomyoma have marked features, which can be differentially diagnosed from other projective lesions of gallbladder.

Animals ; Female ; Hippocampus ; physiology ; Learning ; Long-Term Potentiation ; Male ; Memory ; Mice ; Mice, Inbred Strains ; Pregnancy ; Prenatal Exposure Delayed Effects ; psychology ; Tobacco Smoke Pollution

Animals ; Hippocampus ; metabolism ; Long-Term Potentiation ; Male ; Neurogranin ; biosynthesis ; Rats ; Rats, Wistar ; Sleep Deprivation ; metabolism

Autoimmune Diseases ; chemically induced ; Female ; Humans ; Interferons ; adverse effects ; Purpura, Thrombocytopenic, Idiopathic ; chemically induced ; Young Adult

Objective To assess the value of high-frequency color Doppler ultrasound technique combined with hemorheology in detecting early atherosclerosis and monitoring its progression.Methods Twenty-four white big ear rabbits were divided into two groups randomly.Group A (6 rabbits) was fed normal rabbit chow,while group B (18 rabbits) was fed high cholesterol diet and was divided into three subgroups: B1(6 rabbits) with high cholesterol diet for 4 weeks,B2(6 rabbits) for 8 weeks,B3(6 rabbits) for 12 weeks.Intima-media thickness (IMT),diameter of common carotid artery and hemorheology index were observed dynamically and compared with the findings of histological examination.Results IMT of common carotid artery increased gradually in group B at different phases of atherosclerosis.Diameter compensationally enlarged at the early stage,and then stenosed with the progression of atherosclerosis.RBC deformation index of group B began reducing in the second week,but blood viscosity,plasma viscosity,RBC aggregation index and rigidity index gradually increased from the fourth week( P

Objective:In order to optimize the crystallization technics, the effects of heat-treatment on the flexible strength and microstructure of a novel dental mica glass-ceramic were studied in present study. Methods:7 groups were treated respectively with different crystallization temperature and different crystallization time.Then the flexible strength, X-ray diffraction (XRD)and scanning electron microscope(SEM) were used to study the flexible strength and microstructure of such a novel dental mica glass-ceramic. Results: The result of the study indicated that along with the rise of crystallizing temperature and crystallizing time, this dental mica glass-ceramic showed the peak of bending strength (173.68 MPa) at 680 ℃ for 120 min.Conclusion:This material is promising as esthetic all-ceramic dental material.

Nonarteritic anterior ischemic optic neuropathy (NAION)is a common optic neuropathy seriously affecting the visual function in the middle-aged and elderly population.However,its pathogenesis is not completely clear,and therefore its treating efficacy is dissatisfactory.The current study on NAION is focused on the establishment of suitable animal model and the pathogenesis.In recent years,the relatively ideal animal models(including rodent and primate) have been established by photodynamic methods,which make people have more in-depth understanding on the pathophysiologic mechanism of NAION and lay the basis for the research of therapies.The selection of experimental animals,various induction methods and existing problems in the creation of NAION animal model were reviewed and analyzed in this artical.

This study aims to build a standardization method for preparation of effective powder from FSA and to quantify diosgenin in FSA. Methodology: One kg of FS were used in this study. Setting: BMS, KOM and KOP, IIUM Kuantan campus. FS were washed with distilled water to exclude any foreign matter, and were then air dried. FS-powder were put in distilled water in a ratio of 1 g of powder in 20 ml of distilled water and were shaken at room temperature for 24 hours. Ten mg of hydrolyzed extract sample was diluted in 10 ml volumetric flask with methanol for 15 minutes. Chromatographic estimation was performed using an equilibrated reverse phase Eclipse XDB-C18 column (particle size 5 µg, 4.6 mm x 150 mm). Results: One gram of FSA extract was hydrolyzed to produce sapogenins and 46.6% was recovered. A calibration curve that was constructed based on five dilutions of diosgenin standard at concentrations of 2, 5, 10, 20, 30 and 50 ppm produced a linear graft (r = 0.999). The concentration of diosgenin in FSA extract as calculated using the regression analysis was found to be 29.66 µg/ml, 13.81 % w/w on dried weight basis. Conclusion: Preparation and standardization of effective powder from FSA are the corner stone of many scientific researches in IIUM and Malaysia. Diosgenin is available in the FSA in adequate concentration. The adequate amount of diosgenin in the FSA will guide us to do further study in the way of preparation of a natural product that can be used in the field of reversible anti-fertility therapy.