Humans ; Intestinal Diseases ; physiopathology ; Sepsis ; physiopathology

To discuss the availability of evaluation on the dissolution studies of the multicomponents in traditional Chinese medicine, the in vitro dissolution of total composition of the tablet of rhizomes of Ligusticum chuanxiong components and its correlation with the in vivo were studied by the method of area under the absorbance-wavelength curve (AUAWC). Taken the tablet of rhizomes of Ligusticum chuanxiong components which is composed of sodium ferulate and ligustrazine hydrochloride as subject model, the dissolution tests were carried out with basket method. The plasma concentrations of tablets in different rats were determined by AUAWC at different interval times. The in vivo absorption percentage was calculated by Wagner-Nelson equation to evaluate the in vitro and in vivo correlation. According to the results, the cumulative dissolution in vitro of total composition of tablets of rhizomes of Ligusticum chuanxiong components at 60 min was 90.65% in water by AUAWC. The in vivo pharmacokinetics is fitted with an one-compartment model. The linear equation based on the cumulative dissolution rate (fr) and absorption percentage (fa) at 5, 10, 20, 30 and 60 min was fa = 0.819 7 fr+0.183 and the correlation coefficient was 0.959 5, which showed a good correlation between the in vitro dissolution and the in vivo absorption percentage. The method of AUAWC can be used accurately, feasibly and conveniently to evaluate the in vitro and in vivo correlation of total composition of tablets of rhizomes of Ligusticum chuanxiong components, which will provide better guidance to study the in vitro and in vivo correlation of sustained release preparation etc under complex system of traditional Chinese medicine in the future.
Animals ; Coumaric Acids ; chemistry ; Delayed-Action Preparations ; Drugs, Chinese Herbal ; chemistry ; pharmacokinetics ; Ligusticum ; chemistry ; Rats ; Rhizome ; chemistry ; Solubility ; Tablets

This paper reports a new type of thighbone and cervical bone fraction internal fixing aim di- rector,it has the advantage of entering pin accuratly,simple operating,short time for x-ray irradiating, little suffering to the patient and being economic.

Foreign Bodies ; Glottis ; Humans

Child ; Erythroblastosis, Fetal ; therapy ; Humans ; Infant, Newborn ; Male ; Rh Isoimmunization ; immunology

Objective To explore the apoptosis of alveolar epithelial cell(AEC)and the dynamic changes of Caspase-3 mRNA and Bax and Bcl-2 expression in premature rat with hyperoxia-induced chronic lung disease(CLD).Methods Sixty premature rats within 1 day after birth were randomly divided into 2 groups:hyperoxia group(n=30)and control group(n=30).Hyperoxia-induced premature rat CLD models were prepared,and situ nick end-labeling(TUNEL),reverse transcription polymerasechain reaction(RT-PCR)and immunohistochemical technique were used to determine apoptosis index(AI)of AEC and the expressions of Caspase-3 mRNA and Bax and Bcl-2 proteins in lung tissues at 1,3,7,14 and 21 d after birth.Results Compared with control group,in the hyperoxia group,on the third day after exposured to hyperoxia,the AI of AEC and the expressions of Caspase-3 mRNA and Bax began to increase,and the expression of Caspase-3 mRNA was kept at high level on 7-21 d.The expression of Bcl-2 began to decrease on 7 d,and significantly decreased on 7-21 d.AI of AEC was positively correlated with the expression of Caspase-3 mRNA and Bax,and negatively with the expression of Bcl-2.Conclusions Hyperoxia may induce the increased expression of Caspase-3 mRNA,which might result in the abnormal expression of Bax and Bcl-2 in lung tissues and their imbalance,which might be one of the underlying mechanisms of apoptosis of AEC in premature rats with CLD.

Cardiovascular disease is a severe threat to human health and life. Among many risk factors of cardiovascular disease, genetic or gene-based ones are drawing more and more attention in recent years. Accumulated evidence has demonstrated that the loss or mutation of ataxia telangiectasia mutated (ATM) gene can result in DNA damage repair dysfunctions, telomere shortening, decreased antioxidant capacity, insulin resistance, increased lipid levels, etc., and thus can promote the occurrence of cardiovascular risk factors, such as aging, atherosclerosis and metabolic syndrome. In this review, we discusses the possible mechanisms between ATM gene and cardiovascular risk factors, which could be helpful to the related research and clinical application.
Aging ; Ataxia Telangiectasia Mutated Proteins ; genetics ; Cardiovascular Diseases ; genetics ; DNA Damage ; DNA Repair ; Humans ; Mutation ; Risk Factors

The purpose of this study is to explore the feasibility of wheat germ agglutinin (WGA) modified liposome as a vehicle for ophthalmic administration. Liposome loaded with 5-carboxyfluorescein (FAM) was prepared by lipid film hydration method. WGA was thiolated and then conjugated to the surface of the liposome via polyethylene glycol linker to constitute the WGA-modified and FAM-loaded liposome (WGA-LS/FAM). The amount of thiol groups on each WGA molecule was determined, and the bioactivity of WGA was estimated after it was modified to the surface of liposome. The physical and chemical features of the WGA-modified liposome were characterized and the ocular bioadhesive performance was evaluated in rats. The result showed that each thiolated WGA molecule was conjugated with 1.32 thiol groups. WGA-LS/FAM had a mean size of (97.40 +/- 1.39) nm, with a polydispersity index of 0.23 +/- 0.01. The entrapment efficacy of FAM was about (2.95 +/- 0.21)%, and only 4% of FAM leaked out of the liposome in 24 h. Erythrocyte agglutination test indicated that after modification WGA preserved the binding activity to glycoprotein. The in vivo ocular elimination of WGA-LS/FAM fitted first-order kinetics, and the elimination rate was significantly slower than that of the unmodified liposome, demonstrating WGA-modified liposome is bioadhesive and suitable for ophthalmic administration.
Absorption, Physicochemical ; Adhesiveness ; Administration, Ophthalmic ; Animals ; Drug Carriers ; Eye ; metabolism ; Fluoresceins ; chemistry ; Liposomes ; administration & dosage ; chemistry ; pharmacokinetics ; Male ; Particle Size ; Polyethylene Glycols ; chemistry ; Rats ; Rats, Sprague-Dawley ; Wheat Germ Agglutinins ; administration & dosage ; chemistry ; pharmacokinetics

Objective To study the relationship between sensation seeking,personality characteristics and health-risk behaviors of medical freshmen.Methods Sensation Seeking Scale ( SSS),Eysenck Personality Questionnaire( EPQ),Adolescent Health-Risk Behaviors Questionnaire were applied in this survey to 384 freshmen from two medical colleges.Results ① The health risk behaviors were comnmon in the medical college freshmen (5.2％,48.2％ ),and the score of health risk behaviors had a significant difference between boys and girls,boys risk behaviors were much more than girls(P＜ 0.05 ).②The correlations between the risk behaviors (such as smoking,drinking,fighting,suicidal ideas,using internet too long,poor eating behavior,lack of physical exercise) and sensation seeking personality traits were strong.The health-risk behaviors were all correlated with extraversion(E)and neuroticism (N) significantly( 66.78 ± 10.29 vs 60.57 ± 9.09,t =2.54,P ＜ 0.01 ;7.11 ± 3.23 vs 5.33 ±2.89,t =2.81,P ＜ 0.05 ).③The results of logistic regression analysis showed that male mother' s high education level,sensation seeking,Eysenck' s P,N dimension were effective prediction factors of freshmen ' s health-risk behaviors.Conclusion Medical college freshmen who have higher levels of sensation seeking,Eysenck' s P,N dimension are more prone to health risk behaviors.

The vip3A gene of Bt9816C was cloned and the sequencing result was submitted to GenBank (accession no.AY945939). The gene was identified as a novel vip3Aa gene, which was assigned name vip3Aa18 by the Bacillus thuringiensis delta-endotoxin nomenclature committee. Subsequently, vip3Aa18 was expressed in Escherichia coli BL21 and bioassay demonstrated that the purified recombinant Vip3Aa18 had high toxicity against Helicoverpa armigera and Spodoptera exigua. The results of sequence analysis revealed that a carbohydrate binding domain exists on the C-termini 536 to 667 residues of Vip3Aa18,which maybe participate in binding to midgut receptors in susceptible insects. Moreover, a transmembrane helices located on N-termini 272 to 292 residues was proposed responding for pore formation. Furthermore, a putative disulfide bond was found in the Vip3Aa18 sequence. The specific structures and sites of Vip3Aa18 sequence imply potential function.