The tissue engineering heart valve(TEHV) is a kind of procthetic valve that possesses the characteristics of living, self-repair and proliferation. Owing to the specific properties that are the better hemodyna-mics, low or even no immunological reaction, no need for long-time anticoagulation therapy and longer durability, the ideal TEHV can overcome the drawback of current available valve substitutes which are mechanical prostheses and biological heart valves. In this paper we reviewed the recent development of the TEHV in such aspects, as biomaterial, cultivating environment, seed cells and so on. In addition, we briefly introduced the perspective of using human embryonic stem cells as the source for seed cells in TEHV.

Carcinoma, Hepatocellular ; diagnosis ; diagnostic imaging ; pathology ; Humans ; Liver Neoplasms ; diagnosis ; diagnostic imaging ; pathology ; Magnetic Resonance Imaging ; Tomography, X-Ray Computed ; Ultrasonography

Objective To investigate effects of Livin antisense oligodeoxynucleotides(ASODN) on the proliferation and apoptosis of human leukemia(HL60) cells.Methods Livin protein on HL60 cells was examined by immunohistochemistry.Specific phosphorothioate antisense oligodeoxynucleotides and missense oligodeoxynucleotides target Livin mRNA were synthesized and transfected into HL60 cells following cationic liposome.The proliferation inhibition of HL60 cells was assessed by MTT.The expression of Livin mRNA was detected by RT-PCR.Transmission electron microscope and TUNEL technology were used to detect the apoptosis and morphologic change.ResultsASODN of 600 nmol/L inhibited the HL60 cell proliferation and the expressions of Livin mRNA.The percentage of apoptosis detected by TUNEL was 38.48%?4.37%.cellar ultrastructure was markedly destroyed by Livin ASODN.A significant difference was found when compared with the control group(P

OBJECTIVE To study Pseudomonas aeruginosa infection in respiratory tract of severe neurosurgery patients after tracheotomy,and discuss the prevention and management of nosocomial infection.METHODS The data of 19 severe patients admitted in neurosurgery from Dec 2005 to Oct 2007 who underwent tracheotomy were analyzed retrospectively.RESULTS Respiratory tract infection occurred in all 19 cases,the incidence rate was 100%.Eleven species and 73 strains of pathogenic bacteria were found.Thirty(41.10%)strains of P.aeruginosa were found in 12(63.16%)cases,the drug resistance rate was higher.CONCLUSIONS P.aeruginosa is the most important pathogenic bacteriaum of respiratory tract nosocomial infection in severe neurosurgery patients after tracheotomy.Strengthening the sterilization,isolation and airway management and selecting antibiotics based on drug sensitive test are the important methods to prevent and control infection.

Genetic susceptibility factor is one of the important reasons to induce breast cancer. Breast cancer risk variants are divided into three categories including high, moderate and low penetrances. Traditional BC susceptibility gene discovery approaches limit the search for breast cancer susceptibility genes with high and moderate risk variants. Whole exome sequencing technology provides a quick and efficient method to discover breast cancer susceptibility genes. At present, a number of breast cancer susceptibility genes have been identified by whole exome sequencing method, which provides useful guidance for the risk assessment and pathogenesis of hereditary breast cancer. In this paper, we reviewed the whole exome sequencing technology and discussed the experimental design, data filtering strategy, statistical significance and correlation analysis.

Adult ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Female ; Humans ; Infertility, Female ; drug therapy ; Ovulation ; drug effects ; Ovulation Induction ; Phytotherapy

OBJECTIVETo investigate the changes in the craniofacial morphology ofdeepbite from childhood to adulthood using cross-sectional methods. To analyze the maxillofacial characteristics of adult deepbite.

METHODSThe sample included 159 children (with average age of 12.47 years old) and 81 adults (with average age of21.76 years old) with class III deepbite. The control group consisted of51 normal individuals (with average age of 18.41 years old). Lateral cephalometric radiographs were taken and recorded in a computer through a scanner. Cephalometric measurements were conducted by using Winceph 7.0 software, and results were analyzed with SPSS 12.0 software.

RESULTSSignificant differences between child and adult deepbite were observed in the following: N-ANS, ANS-Me, A-Ms, A-Ptm, Wits, Mo-Ms, Ii-Ii, A-B plane angle to the mandibular plane angle, Gonial angle, L1 to NB length, overjet, mandibular body to anterior cranial base, Mo-Mi, posterior facial height, U1 to NA length, Pog-Go, Cd-Go, occlusion plane angle to SN, and U1 to SN. In addition, significant differences between adult deepbite and normal occlusion were observed in SNB, ANB, convexity, APDI, ODI, Wits, A-B plane to mandibular plane, Gonial angle, overjet, mandibular body to anterior cranial base, S-Ptm, Mo-Mi U1 to SN; Pog-Go, Cd-Go, posterior cranial base, and occlusion plane to SN and posterior facial height.

CONCLUSIONDeepbite patients have certain growth potential after puberty, but the sagittal relationship of their jaws exhibits no improvement. Adult deepbite patients exhibit significant problems in the vertical and sagittal jaw positions.

Adult ; Bone and Bones ; Cephalometry ; Child ; Cross-Sectional Studies ; Dental Occlusion ; Female ; Humans ; Male ; Mandible ; Sexual Maturation

Blood Pressure ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Hypertension ; drug therapy ; Inflammation

Brain Diseases ; etiology ; therapy ; Heat Stroke ; complications ; therapy ; Humans ; Hyperbaric Oxygenation ; Male ; Middle Aged ; Occupational Diseases ; complications ; therapy

The aim of this study was to look for the chemical constituents of the bulbs of Fritillaria anhuiensis S.C.Chen et S.E.Yin. The bulbs of Fritillaria anhuiensis were extracted with 95% EtOH at reflux. Isolation and purification were performed by silica gel column chromatography. Structures of pure compounds were established on the basis of spectral analysis. Three compounds were obtained and identified as 12,15-epoxy-8(17),13-labdadien-19-ol (1), ent-3β-acetoxy-kauran-16β,17-diol (2), ent-kaurane-3β,16β,17-triol (3). Compound 1 is a new labdane-type diterpenoid. Compounds 2 and 3 were obtained from Fritillaria anhuiensis for the first time.