Animals ; Brain ; metabolism ; Codonopsis ; Excitatory Amino Acids ; metabolism ; Female ; Hypoxia ; metabolism ; Male ; Mice ; Mice, Inbred Strains ; Selenium ; pharmacology

Objective To investigate calcineurin signaling pathway which mediates myocardium apoptosis of right heart in rats with chronic hypoxia and the potential mechanisms of it.Methods A rat model of right ventricular hypertrophy(RVH) was established induced by chronic hypoxia(95-105 mL?L-1 O2).Used randomized block design based on different brood,30 rats were divided into 3 groups:treatment group with cyclosporine A(CsA,10 mg?kg-1?d-1,intraperitoneal injection),chronic hypoxia group,normal control group(with normal oxygen).The rats in CsA treatment group and chronic hypoxia group were exposed to normobaric chronic hypoxia(95-105 mL?L-1 O2,21 days).Apoptotic index(AI),calcineurin A?(CnA?) mRNA levels,Bcl-2 mRNA levels and the protein expression levels of CnA?,nuclear factor 3 of activated T cells(NFAT3) and Bcl-2 in right ventricle were investigated.Results 1.The AI of treatment group with CsA was higher than that in chronic hypoxia group(P

Acute Disease ; Animals ; Female ; Hypoxia ; physiopathology ; Male ; Microcirculation ; physiology ; Rats ; Splanchnic Circulation ; physiology ; Superoxide Dismutase ; blood

Objective:To evaluate the effect of short-time group psychological guidance on mental quality of college students. Methods:Designed the content of one day's psychological coach.600 college students received psychological coach successively.60 students were randomly chosen as the intervened group,who were treated with one-day group psychological guidance,while 60 students,who never attended the group psychological guidance,were chosen as control.Assessed and compared the mental quality of the intervened group and the control group with the Faith in People Scale (FPS),Personal Evaluation Inventory (PEI),Self-Rating Anxiety Scale(SAS),Self-Rating Depression Scale (SDS) on the day before or 1 and 12 weeks after coach.Results:There were no significant differences of the scale of FPS,PEI,SAS,and SDS between two groups before coach and there were significant differences between two groups after coach.Conclusion:Short-time group guidance is helpful to developing college students' ability in interpersonal contact and self-confidence and improving depression and anxiety.

The investigators isolated one yeast from China Huaimao sweet flour paste. The strain was identified into Citeromyces, and claimed being a new species. The strain was named as Ctieromyces baadingensis zhang sp. Nov., which differed markedly from Citeromyces matritensis in physiological and biochemical characteristics. Citeromyces baod-ingensis didn't ferment sucrose and raffinose, and assimilated galactose and cellobiose, and didn't assimilate galactose and ceflobiose. The G+C mol% was 48.5.

Objective To explore if continuous administration of adenosine by peripheral pathway can attenuate myocardial hypertrophy and pulmonary arterial hypertension(PAH)caused by chronic hypoxia and analyze the dose-effect relationships between them.Methods Forty-eight Sprague-Dawley(SD)rats were randomly divided into 8 groups:the hypoxia group(n=6),the hypoxia ade-nosine-treated groups [n=18,adenosine was administrated with different doses 50,100,150 ?g/(kg?min),the hypoxia adenosine-treated group A,B,C],the control group(n=6),the control adenosine-treated control groups [n=18,adenosine was administrated with different doses 50,100,150 ?g/(kg?min),the control adenosine-treated control group A,B,C].On the 21st day of the experiment,the Medlab-U/4CS was used to determined the right ventricular systolic pressure(RVSP)and the mean pulmonary arterial pressure(mPAP)of each rat.The ratio of the weight of right ventricle/left ventricle and septum[RV/(LV+S)] and the ratio of the weight of right ventricle/body weight(RV/BW)were also calculated.The morphological changes in myocardium cells and pulmonary vascular structure were observed.SAS 8.0 software was used to analyze the data.Results Twenty-one days after hypoxia,RVSP,mPAP,RV/(LV+S),RV/BW in hypoxia groups were higher significantly than those in control group and hypoxia adenosine-treated groups(Pa

In this study, the herpetin (HPT) lyophilized liposome was prepared, and its saftey and pharmacodynamics were evaluated. HPT lyophilized liposome was prepared by thin-film ultrasonication method. The lyoprotectant was optimized using particle size and encapsulation efficiency as indexes. Then, the influencing factors of HPT lyophilized liposome were investigated. In addition, preliminary safety and therapy efficiency of HPT lyophilized liposome to liver injury induced by CCl4 in the mice. The optimal lyoprotectant was 5% sucrose plus 5% lactose and the dispersed HPT lyophilized liposomes were spherical with the mean diameter of (107.0 ± 1.2) nm and the mean encapsulation efficiency of (99.7 ± 0.50)%. The lyophilized powder was sensitive to temperature, humidity and illumination. None of hemolysis, hemagglutination and vein irritation was observed after intravenous injection of HPT lyophilized liposomes into rabbits. HPT lyophilized liposome showed obviously therapy efficiency to liver injury induced by CCl4 in the mice. The improvements of ALT, AST and ALP were better than that in HPT free drug. The obtained HPT lyophilized liposome met the standard of CP with fine particle size and encapsulation efficiency after dispersion. The HPT lyophilized liposome showed good safety and enhanced the treatment efficacy of HPT. The HPT lyophilized liposome should be stored in low temperature, sealed condition far away from light.
Animals ; Chemistry, Pharmaceutical ; Cucurbitaceae ; chemistry ; Drug Carriers ; chemistry ; Drug Evaluation, Preclinical ; Drug Stability ; Drugs, Chinese Herbal ; adverse effects ; chemistry ; pharmacokinetics ; Liposomes ; chemistry ; Male ; Mice ; Mice, Inbred ICR ; Rabbits

Herpetin (HPT) is an active monomer constituent isolated from lignanoid in seeds of Herpetospermum caudigerum. HPT shows inhibitory effects in hepatic injury and HBV-DNA and the replication. In the study, we successfully prepare herpetin liposomes by film dispersion method for the first time. The prescription process was optimized, with the entrapment efficiency as the index. According to the optimized prescription, the mass ratio of HPT: phospholipids: cholesterol was 2.44:78.05: 19.51, the hydration and de-molding process was performed with 0.5% F68 solution at 50 degrees C, and the water-bath ultrasonic time was 20 min. The HPT liposomes prepared by this method showed an average entrapment efficiency of (94.50 +/- 2.15)% and a particle size of (119.2 +/- 10.7) nm, which was consistent with the trial expectations and will lay a solid foundation for the hepatic targeting delivery system in future.
Chemistry, Pharmaceutical ; methods ; Cholesterol ; chemistry ; Drug Compounding ; methods ; Drugs, Chinese Herbal ; chemistry ; Lignans ; chemistry ; isolation & purification ; Liposomes ; chemistry ; Phospholipids ; chemistry ; Ultrasonics