BACKGROUND: The method and effect of construction of tissue-engineering heart valve scaffold with cell detergents are different, and the method of detergent combining with the trypsase and nucleese is more suitable than others. OBJECTIVE: To investigate the effect of different detergents (sodium deexycholate, sodium dodecylsulfate, and triton) combined with trypsase on decellularized porcine heart valve and the influence on the accellular scaffold. METHODS: Porcine aortic valve leaflets were sterilized by antibiotics for 12 hours, maintained in the solution of the trysin and the EDTA for 12 hours, and treated with sodium deexycholate, sodium dodecylsulfate, and triton. Finally, the sample was dip in nucleese solution for 12 hours to remove endothelial cells and interstitial cells. HE staining was used to detect whether the endothelial cells were removed completely, Masson staining was used to evaluate damage level of collagen fiber and elastic fiber, and electronic scanning was used to observe the microstructure. RESULTS AND CONCLUSION: All the three detergents completely removed the endothelial ceils; however, the effect of sodium decxycholate on collagen fiber and elastic fiber was light, and then sodium dodecylsulfate and triton. This suggested that the method of DOA combining with the enzyme digestion was a suitable technique to construct tissue-engineering heart valve scaffold.

Objective:To investigate the activated state of TH1/TH2 cytokines and T lymphocytes and to explore the pathogenesis of ankylosing sondylitis.Methods:Cytokine levels of Th1(IFN-?、TNF-?、IL-2)and Th2(IL-10、IL-5、IL-4) in plasma, percentages of CD3 +、CD4 +、CD8 + T cells、B cells(CD19 +) NK cells(CD16 +56 +)and CD3 +HLA-DR +、CD4 +HLA-DR +、CD8 +HLA-DR + T cells in peripheral blood lymphocytes were detected by Flow Cytometry.Results:In patients with AS ,plasma levels of TNF-?、IL-2 were significantly lower than that of healthy controls. IL-10 were significantly higher than that of healthy controls. In AS patients, percentages of CD3 +and CD8 + T cell from peripheral blood lymphocytes were significantly lower than that of healthy controls. Percentages of CD8 +HLA-DR + T cell were significantly lower than that of healthy controls. CD4 +HLA-DR +T cell was significantly highter than that of healthy controls.Conclusion:In patients with AS , lower levels of TNF-?、 IL-2 and higher level IL-10 at plasma indicate an inclination between TH1 and TH2, such as an impaired TH1 cytokine profile and an activated TH2 cytokine profile, especially in TNF-?.

To discuss the feasibility of the pharmacodynamic evaluation method for traditional Chinese medicine (TCM) formula particles, with traditional decoction for reference and the intervention of Magnoliae Officinalis Cortex in rats with ulcerative colitis (UC). First of all, the similarity of traditional Magnoliae Officinalis Cortex decoction and formula particles of different manufacturers was defined by using the IR fingerprint. The UC rat model was established and given Houpo formula particles of different doses and manufacturers, with the decoction for reference, in order to observe disease activity index (DAI), colon mucosa damage index (CMDI), pathologic changes, nitric oxide (NO), endothdin (ET), substance P, vasoactive intestinal peptide (VIP). Their intervention effects on UC rats were compared to study the difference between Sanjiu and Tianjiang Houpo formula particles, in order to demonstrate the feasibility of the pharmacodynamic evaluation method for Houpo formula particles. According to the results, Houpo formula particles showed similar pharmacodynamic actions with the traditional decoction. The pharmacodynamic comparison of Houpo formula particles of different manufacturers showed no statistical significance. The experiment showed that on the basis of the TCM compounds, a prescription dismantlement study was conducted to define target points of various drugs. The traditional decoction was selected for reference in the comparison of corresponding formula particles for their pharmacodynamic equivalence. This method could avoid controversies about single or combined boiling of formula particles, and give objective comments on the pharmacodynamic effect of the formula particles. The method is proved to be feasible.
Animals ; Chemistry, Pharmaceutical ; methods ; Colitis, Ulcerative ; drug therapy ; metabolism ; Dosage Forms ; Drug Evaluation, Preclinical ; Drugs, Chinese Herbal ; adverse effects ; chemistry ; pharmacokinetics ; Humans ; Magnolia ; chemistry ; Male ; Rats ; Rats, Wistar ; Substance P ; metabolism ; Vasoactive Intestinal Peptide ; metabolism

Animals ; Breast Neoplasms ; metabolism ; Humans ; NF-kappa B ; metabolism ; Neoplasms ; metabolism ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Receptors, Notch ; metabolism ; physiology ; Signal Transduction

Endophytic fungi which reside in the tissue of mangrove plants seem to play an important role in the discovery of new biologically active substances. During the course of screening for the antimicrobial metabolites from the endophytic fugus Penicillium sp. FJ-1 of mangrove plant Avicennia marina, a new aurone glycoside (1) was isolated by repeated column chromatography on silica gel and recrystallization methods. The structure of 1 was elucidated as (Z)-7,4'-dimethoxy-6-hydroxy-aurone-4-O-β-glucopyranoside, on the basis of spectroscopic analysis. Compound 1 exhibited antifungal activity against Candida sp., with the potency comparable to amphotericin B and much better than fluconazole. Compound 1 can also inhibit extracellular phospholipase secretion in a concentration-dependent manner.
Antifungal Agents ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Benzofurans ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Candida ; drug effects ; Glycosides ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Molecular Structure ; Penicillium ; chemistry ; genetics ; isolation & purification ; metabolism ; Seawater ; microbiology

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

Vasculogenic mimicry (VM) can promote tumor growth, invasion, and metastasis. The formation of VM is regulated by various proteins including epithelial cell kinase, phosphoinositide-3 kinase, and hypoxia-inducible factor 1. Local microenvironment also plays an important role in regulating VM formation.

Apoptosis ; Cell Proliferation ; DNA Methylation ; Humans ; Intercellular Signaling Peptides and Proteins ; genetics ; metabolism ; Membrane Proteins ; genetics ; metabolism ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasms ; metabolism ; pathology ; Neovascularization, Pathologic ; Nerve Tissue Proteins ; genetics ; metabolism ; Promoter Regions, Genetic ; Receptors, Immunologic ; genetics ; metabolism ; Signal Transduction

Objective To investigate the sensitivity of the real-time fluorescence PCR technique and the bacterial culture for detecting the colonization of group B Streptococcus(GBS)in late pregnant women.Methods 2 specimens were collected from preg-nant women genital tract-rectal secretions swabs,one specimen for conducting the bacterial culture and another for conducting the real-time PCR technique to detect genital GBS.The accuracy and rapidness were compared between the two methods.308 cases of pregnant women were divided into the GBS positive group and the GBS negative group according to the detection results of the real time real-time fluorescence PCR technique.The relation between the occurrence of premature rupture of membranes with GBS was investigated by the comparative analysis.Results Among 308 pregnant women with GBS detection,18 cases were positive by the ordinary bacterial culture with the positive rate of 5.8%(18/308),while 28 cases were positive by the real-time fluorescent PCR with the positive rate of 9.4%(29/308).In the GBS positive group detected by PCR,the premature rupture of membranes occurred in 9 cases with the positive rate of 31%,while in the GBS negative group detected by PCR,which occurred in 33 cases with the pos-itive rate of 11.83%.Conclusion This survey shows that the positive detection rate of the real-time fluorescent PCR technique is significantly higher than that of the bacterial culture method,the application of this detection technique for detecting GBS provides the basis for rapidly diagnosing GBS and conducting the prophylactic use of antibacterial drugs more accurately and more effectively.

Objective To explore the effect of sodium fluoride(NaF) on the tumor markers of human embryonic bronchial epithelium (HEBE) cells.Methods HEBE cells were collected from the human abortive fetues.The cells were exposed to NaF of several concentrations for 36 h.After rinsed,the cells were incubated for 36 h again.The NaF toxicity to HEBE cells was detected using MTT method.The supernatant was collected and the lung tumor markers were detected using ELISA method.Results NaF was toxic to the HEBE cells,and the toxicity was increased with the NaF doses.There were few survival HEBE cells at 6 mmol/L NaF.The tumor markers in both of the control and experiment groups were very low,and no significant difference had been seen between them.Conclusion NaF may damage HEBE cells,but may not influence the tumor markers of HEBE cells.