Objective To explore the role of Bcl-2 and Bax in pathogenesis of the autism. Methods Female Sprague-Dawley rats were given a single intraperitoneal injection of sodium valproate (VPA, 600 mg/kg) on 12.5 d after pregnancy, their offspring were as the model group; while the other pregnancy rats were given normal saline, their offspring were as the control group. Both groups were observed with the Nissl staining, immunohistochemistry of Bcl-2 and Bax and image analysis 1 d, 7 d, 14 d, 28 d, 56 d after birth. Results Compared with the control group, Nissl staining showed the number of cortical neurons decreased on 1 d and 7 d after birth in the model group, rapidly increased on 14 d after birth, and maintained in high level on 28d , 56 d after birth. For immunohistochemistry, the integrated optical density (IOD) of Bcl-2 and Bax decreased in cortex on 1~14 d after birth (P<0.001) in both groups, and were stable 28 d after birth (P>0.05). Compared with the control group, the IOD of Bcl-2 decreased much more at every time point (P<0.001) in the model group, but the IOD of Bax increased on 1 d, 7 d (P<0.001), decreased on 14 d (P<0.001), similar 28 after birth(P>0.05). The ratio of Bcl-2/Bax was the most on 1 d after birth, and then decreased to approximately 1 in the control group, while it was the least on 7 d, most on 14 d, and decrease to less than 128 d after birth. Conclusion Apoptosis of cerebral cortex neurons increases in the autism model rats, especially in the early time.

ObjectiveTo discuss the values of fiber bronchoscopy with three-way laryngeal mask airway continuous ventilation in 1-6 month old infants with oxygen-dependent respiratory diseases.MethodsFrom January 2010 to May 2011, 29 cases of 1-6 month old infants with oxygen-dependent respiratory diseases who underwent conventional ifber bronchoscope and 148 cases of 1-6 month old infants with oxygen-dependent respiratory diseases who underwent ifber bronchoscopy with three-way laryngeal mask airway continuous ventilation were enrolled in control and treatment groups respectively. The success rate of ifber bronchoscope and the incidence rate of complications were compared between two groups.ResultsIn the treatment group, the success rate of ifber bronchoscope was 89.2% which was signiifcantly higher than 58.6% in the control group and the rate of laryngeal edema was 9.1% which was signiifcantly lower than 35.3% in the control group. The rates of endotracheal intu-bation ventilation and postoperative hemorrhage were lower than those in the control group, but the difference was not statistical ly signiifcant.ConclusionFiber bronchoscopy with three-way laryngeal mask airway continuous ventilation is superior to the traditional ifber bronchoscope in 1-6 month old infants with oxygen dependent respiratory system diseases.

Objective To observe the expression of FAS/FASL in brain of autism model rats induced by sodium valproate,and study the role of FAS/FASL in pathogenesis of autism.Methods Female wistar rats were given a single intraperitoneal injection of sodium valproate(VPA,600 mg/kg) on 12.5 d after pregnancy,and their offspring were used as the experimental group;while the other pregnancy rats were given the same dose of normal saline,and their offspring were used as the control group.The growth,social and non-social behaviors,repetitive stereotyped movements of both groups were observed and tested.The expressions of FAS/FASL in brain of both groups on 1 d,7 d,l4 d,28 d,56 d and 90 d after birth were observed and compared by means of immunohistochemistry and image analysis.Results Compared with the control group,the rats in experimental group had stunted growth,a decrease in social behavior,an increase in non-social behavior,with repetitive stereotyped movements increased,and there were significant differences (all P ＜0.05) ;FAS/FASL expression was less on 1 d after birth,and it was growing gradually with age in days,and expression reached the peak on 28 d and then began to decrease.Compared with the control group,all day-old rats' FAS and FASL expression in the experimental group were significantly raised (all P ＜ 0.05).In experimental group,the brain FAS/FASL IOD values on 28 d after the birth reached the maximum,and 90 d after the birth reached the minimum.In the control group brain FAS/FASL IOD values on 14 d after the birth reached the maximum,and 1 d after the birth reached the minimum.Conclusions The apoptotic cell of autism model rats' brain neure is increasing firstly and then decreasing by FAS/FASL apoptotic pathway,and reach apoptosis peak on 28d.

0.05).Chlorpyrifos increased the activity of CYP1A1 in lungs,CYP2B1 in kidneys and lungs.Cypermethrin increased activity of CYP1A1 in livers,kidneys and lungs,CYP2B1 in livers and lungs,CYP3A in livers.These increases were statistically significant (P

In order to discover the mechanism of Xuebijing oral effervescent tablet (XBJOET) to treat infectious diseases, the effect of XBJOET on endotoxin induced rabbit fever and disseminated intravascular coagulation (DIC) was investigated. Auricle microcirculation in rabbit was detected by laser speckle blood perfusion imager system; coagulation function was measured by coagulation analyzer, fibrinolytic system was quantified by Elisa assay and micro thrombosis in tissues was observed with HE staining under light microscope. The results demonstrated that the body temperature of rabbit decreased significantly at 1-3 h after administration with 4.8, 2.4 and 1.2 g x kg(-1) XBJOET to endotoxin induced DIC rabbit model, the auricle microcirculation blood flow in model group (54.45 +/- 14.53) PU was lower than that in control group (77.18 +/- 12.32) PU. The auricle microcirculation blood flow increased markedly and there was significant difference between model group and 1.2 g x kg(-1) XBJOET group. There was significant difference between model group and control group in the content of PAI1 and FIB. The PAI1 levels in model and control groups were (30.48 +/- 2.46) ng x mL(-1) and (20.93 +/- 3.25) ng x mL(-1), respectively. The FIB levels in model and control group were (3.34 +/- 1.09) g x L(-1) and (4.84 +/- 1.10) g x L(-1), respectively. The content of PAI1 in rabbit plasma decreased notably, there were significant differences between model group and 4.8, 2.4 g x kg(-1) XBJOET groups. On the contrary the content of FIB increased. XBJOET possessed pharmacological activities of curing infectious fever and DIC, the mechanism of which is related to amelioration of microcirculation disturbance, inhibition of fibrinolytic system activation and coagulation and micro thrombosis elimination.

ObjectiveTo observe testis tissue changes of experimental cryptorchidism after orchiopexy in various-day-rats.MethodsSeventy-two Sprague-Dawley(SD) male rats were divided into 3 groups randomly and made artificial cryptorchidism:unilateral cryptorchidism group(n=24),bilateral cryptorchidism group(n=24)and sham operation group(n=24)at age 21-day-old.Intra-abdominal testicle was resetting in 2 weeks,at age 40 days and 60 days,the rats were sacrificed for detection tubular fertility index(TFI) and mean tubular diametar(MTD) with hematoxylin-eosine staining and germ cell apoptosis by terminal deoxynucleotidyl transferase mediated d-UTP nick end labeling(TUNEL) assay.ResultsThere were significant differences of MTD,TFI and apoptosis index(AI) between cryptorchidism and scrotal testes(P0.05).The AI of cryptorchidism testes of unilateral cryptorchidism group were significantly lower than that of bilateral cryptorchidism group in 40 days(P0.05).ConclusionsAI of artificial resetting testis is increased and contralateral descended testes in unila-teral cryptorchidism have various damage.It is to lighten that pathological damage of testes of cryptorchidism with prolongation of reset time.

It is to investigate the effect of two kinds of Houttuynia Cordata Injection on preventing and treating H1N1 influenza virus infection in mice. Pneumonia model was set up by intranasal infection of the normal and immunocompromised mice with influenza virus FM1 and PR8. The two injections were administered before and after the administration of virus, separately, and the lung index was observed. The results showed that the two preparations have obvious therapeutic effect on normal mice infected with influenza virus FM1 and PR8. And to FM1, the new injection's effect is better at small dosage. The results also showed that the two preparations have obvious prophylactic effect on immunodepressed mice infected with influenza virus FM1 and PR8. And to PR8, the old injection's effect is better at small dosage. Houttuynia Cordata Injection can improve the mice pneumonia caused by influenza virus H1N1 and decrease the lung index markedly. It has a remarkable preventive and therapeutic effect on H1N1 influenza virus in mice.

Objective To evaluate the diagnostic value of fluorescent quantitative polymerase chain reaction(PCR) for Mycoplasma pneumoniae (MP) in children with MP pneumonia(MPP).Methods From Jun.2008 to Jan.2009,153 cases hospitalized with pneumonia were enrolled,and 30 cases without respiratory infection were enrolled as control group.Their respiratory secretion (including nasopharyngeal secretion,sputum,bronchialalveolar lavage fluid or pharyngeal swab) samples were collected for fluorescent quantitative PCR for MP.And their single or paired serums were collected for specific MP antibody detection.Results There were 123 cases confirmed with MPP by serology,among whom 114 cases were MP PCR positive.The quantitation of MP DNA was among 1.20?106-3.66?1010 gene copys/L. There were 30 cases with pneumonia negative with MP by the paired serum serology,among whom 2 cases were MP PCR positive,and the quantitation of MP DNA was (1.08-3.02)?107gene copys/L.All cases of control group were MP PCR negative.During the first and second weeks of the MPP onset,the sensitivity of MP-IgM from the first single blood samples were 66.7% and 83.9%,respectively.While the sensitivity and specificity of MP PCR were 92.7% and 93.3%,respectively.From the third week of the disease onset,the sensitivity of MP-IgM from the first single blood samples increased to 90.9%-100%.The clinical manifestations of MPP were nonspecific.Conclusions PCR is superior to serology for early diagnosis on MP infection.Combination of the 2 methods may be helpful to early and accurate diagnosis on MP infection.

Humans ; Adenocarcinoma, Mucinous/pathology* ; Stomach Neoplasms/pathology*

The purpose of this study is to investigate the enantioselectivity of norgestrel (NG) transdermal permeation and the potential influence of linalool and lipids on the enantioselectivity. In vitro skin permeation studies of NG across the excised rat skins were performed with Valia-Chien diffusion cells, and the permeation samples were analyzed by enantioselective HPLC. The possible enantioselective permeation of NG across intact rat back skin and lipids extracted rat back skin and the influence of linalool were evaluated. The skin permeation rate of dl-NG was two times higher than that of l-NG when donor solutions (EtOH/H2O 2 : 8, v/v) containing l-NG or dl-NG. It may be mainly attributed to the solubility discrepancy between enantiomer and racemate. The enantioselective permeation of dl-NG across intact rat skin was observed when the donor solutions containing dl-linalool. The permeation flux of l-NG was 22% higher than that of d-NG. But interestingly, the enantioselective permeation of dl-NG disappeared under the same experimental condition except that the lipid extracted rat skin was used. Attenuated total reflection-fourier transform infrared spectroscopy analysis of stratum corneum showed that the wave number for asymmetric CH2 stretching vibrations of lipids treated with dl-linalool was greater than that of the control. The results indicated that the enantioselective permeation of NG may be contributed by the interaction between dl-linalool and lipids. More than half of lipids were composed of ceramides. The stereospecific interaction maybe existed among chiral enhancer (linalool), lipids (ceramides) and/or chiral drugs (NG).
Administration, Cutaneous ; Animals ; Lipids ; pharmacology ; Monoterpenes ; pharmacology ; Norgestrel ; pharmacokinetics ; Rats ; Skin Absorption ; drug effects ; Spectroscopy, Fourier Transform Infrared ; Stereoisomerism