Objective To explore whether chlamydia pneumoniae(CP) infection causes the coronary artery morphology change in children and their reciprocity.Methods Serum immunoglobin M(IgM) and immunoglobin G(IgG) antibody to CP were detected by enzymelinked immunosorbent assay(ELISA) in 52 hospitalized children aged 1 month to 10 years and 5 months old in respiratory ward in our hospital,serum interleukin-6(IL-6),triglyceride(TG) and peripheral blood C-reactive protein(CRP) were also determined,morphology change of coronary artery of the patients were harvested by colored doppler echocardiogram.Results In the 52 cases,21 cases were positive of IgM,28 cases were positive of IgG,3 cases were positive both IgM and IgG.Twelve cases were high of CRP,5 cases were high of IL-6,9 cases were high of TG.In the 52 patients,the different levels of IgM,IgG,IL-6,CRP and TG had not coronary artery morphology change.Conclusion CP infection in the children does not cause the coronary artery to occur morphology change.

Objective To compare genomic expression differences between androgenic complete hydatidiform mole (AnCHM) and normal first trimester villi with similar gestation weeks,and search for potential adjuvant diagnostic molecular markers.Methods Short tandem repeat (STR) detection was used to identify AnCHM,human oligonucleotide array U133 Plus 2.0 was used to measure genomic expression differences between AnCHM and normal villi,and quantitative fluorescent RT-PCR was used to verify array of several genes.Results Nine of 11 histologically diagnosed complete hydatidiform moles were found to be AnCHM by means of STR,and the other 2 were biparental complete hydatidifonn mole (BiCHM). Compared with villi,oligonueleotide array showed 279 genes (0.72%,279/38 500) were over expressed and 1710 genes (4.44%,1710/38 500) under expressed in AnCHM.Bioinformatics analysis found that differentially expressed genes were involved in multiple biological processes and pathways.Changes of imprinting genes,growth hormone genes and chorionie somatomammotropin hormone genes were especially remarkable.Conclusions Pathogenesis of AnCHM is a complex process involving multiple genes and pathways.Altered expression of imprint genes may play important roles in the process.

Bone Marrow Cells ; metabolism ; pathology ; CD28 Antigens ; blood ; metabolism ; CD4 Antigens ; blood ; metabolism ; CD4-Positive T-Lymphocytes ; metabolism ; Dendritic Cells, Follicular ; metabolism ; pathology ; Humans ; Immunoblastic Lymphadenopathy ; metabolism ; pathology ; Immunophenotyping ; methods ; Lymphoma, T-Cell ; metabolism ; pathology ; Neprilysin ; blood ; metabolism ; Receptors, Complement 3d ; blood ; metabolism ; fas Receptor ; blood ; metabolism

OBJECTIVETo investigate the clinical significance and detection of the expression of CD25- CD127- on CD4+ T cells in peripheral blood in patients with hepatitis B.

METHODSThe expression of CD25- CD127- on CD4+ T cells were measured by using flow cytometry in 53 patients with chronic hepatitis B, 53 carrier with hepatitis B virus and 26 healthy blood donors, and follow up 20 patients with HBV-DNA positive treated with interferon.

RESULTS(1) Compared with healthy controls, the expression of CD25- CD127- on CD4+ T cells in patients and carrier with hepatitis B virus were lower (Q = 4.559, P < 0.05; Q = 6.230, P < 0.05). (2) The expression of CD25- CD127- on CD4+ T cells in patients with HBV-DNA positive (n = 77) was lower than that of negative (n = 29) (t = 2.290, P = 0.024). (3) Compared with the prior treatment,the expression of CD25- CD127- on CD4+ T cells in patients with B hepatitis were lower after interferon treated with 12 weeks (t = 2.469, P = 0.024).

CONCLUSIONIt suggested that the CD25- CD127- expression on CD4+ T cells correlated with viral infections and cleared,exogenous interferon could decrease CD25- CD127- expression on CD4+ T cells.

Adult ; CD4-Positive T-Lymphocytes ; immunology ; DNA, Viral ; blood ; Female ; Flow Cytometry ; Hepatitis B ; immunology ; virology ; Humans ; Interleukin-2 Receptor alpha Subunit ; blood ; Interleukin-7 Receptor alpha Subunit ; blood ; Male

OBJECTIVETo observe the impact of adenosine A1 receptor stimulation on extracellular signal-regulated kinase 1/2 (ERK1/2) signal pathways on angiotensin II (AngII) stimulated cardiomyocytes of neonatal rats in vitro.

METHODSCardiomyocytes of neonatal rats were cultured in vitro. Cardiomyocytes hypertrophy was induced by AngII (0.1 µmol/L). The antihypertrophic effect of adenosine A1 receptor stimulation via adenosine A1 receptor agonist R-PIA (1 µmol/L) was observed in the presence or absence of ERK1/2 inhibitor 1, 4-Diamino-2, 3-dicyano-1, 4-bis(o-aminophenylmercapto) butadiene (U0126) 1 µmol/L, PKC inhibitor Ro-31-8220 (50 nmol/L), and pertussis toxin (PTX, 5 mg/L). The total protein content was assayed by the method of Lowry. The expression of mRNA of atrial natriuretic peptide (ANP) was determined by RT-PCR. [Ca(2+)]i was measured by confocal microscope using Fluo-3/AM as fluorescent indicator. The relative expression of ERK1/2 was determined by Western blot.

RESULTSCompared with normal control group, AngII induced significant cardiomyocyte hypertrophy. Compared with AngII group, R-PIA significantly inhibited AngII-induced increase of the protein content, cardiomyocytes volume and expression of ERK1/2, calcium ion fluorescence intensity, similar as U0126 and Ro-31-8220. The inhibitory effects on AngII induced cardiomyocytes hypertrophy of R-PIA were lost when preincubated with PTX.

CONCLUSIONAdenosine A1 receptor can inhibit AngII induced cardiomyocyte hypertrophy through downregulating ERK signal pathways and reducing intracellular Ca(2+).

Adenosine A1 Receptor Agonists ; pharmacology ; Angiotensin II ; pharmacology ; Animals ; Calcium ; metabolism ; Cardiomegaly ; chemically induced ; prevention & control ; Cells, Cultured ; Female ; MAP Kinase Signaling System ; Male ; Myocytes, Cardiac ; drug effects ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley ; Receptor, Adenosine A1 ; drug effects ; metabolism

A FAST (fluorescence of advanced Maillard products and Soluble Tryptophan) method for identification of reconstituted milk made from skim milk powder in the fresh milk was developed. Considering milk and skim milk powders variations from different seasons and countries, milk was collected from different dairy farms in different seasons and skim milk powders were collected from different countries to measure the Tryptophan (Trp), advanced Maillard products (AMP) fluorescence values. The results showed that there were differences (P<0.01) between raw and reconstituted milk. The plot of values in each mixed level of raw and reconstituted milk had a correlation coefficient >0.97. The FAST method is a simple, rapid, low-cost and sensitive method enabling the detection of 5% reconstituted milk in fresh milk. The measurement of the Trp, AMP fluorescence values and calculation of the FAST index is a suitable method for large-scale monitoring of fresh milk samples.
Animals ; Cattle ; Food Analysis ; methods ; Food Contamination ; prevention & control ; Glycation End Products, Advanced ; analysis ; Maillard Reaction ; Milk ; chemistry ; classification ; Powders ; Spectrometry, Fluorescence ; methods ; Tryptophan ; analysis

BACKGROUNDAngiogenesis is a prerequisite for tumor growth and plays an important role in rapidly growing tumors, such as malignant gliomas. A variety of factors controlling the angiogenic balance have been described, and among these, the endogenous inhibitor of angiogenesis, tumstatin, has drawn considerable attention. The current study investigated whether expression of tumstatin by glioma cells could alter this balance and prevent tumor formation.

METHODSWe engineered stable transfectants from human glioma cell line U251 to constitutively secrete a human tumstatin protein with c-myc and polyhistidine tags. Production and secretion of the tumstatin-c-myc-His fusion protein by tumstatin-transfected cells were confirmed by Western blotting analysis. In the present study, we identify the anti-angiogenic capacity of tumstatin using several in vitro and in vivo assays. Student's t-test and one-way analysis of variance (ANOVA) test were used to determine the statistical significance in this study.

RESULTSThe tumstatin transfectants and control transfectants (stably transfected with a control plasmid) had similar in vitro growth rates compared to their parental cell lines. However, the conditioned medium from the tumstatin transfected tumor cells significantly inhibits proliferation and causes apoptosis of endothelial cells. It also inhibits tube formation of endothelial cells on Matrigel. Examination of armpit tumors arising from cells overexpressing tumstatin repress the growth of tumor, accompanying the decreased density of CD31 positive vessels in tumors ((5.62 ± 1.32)/HP), compared to the control-transfectants group ((23.84 + 1.71)/HP) and wild type U251 glioma cells group ((29.33 + 4.45)/HP).

CONCLUSIONAnti-angiogenic gene therapy using human tumstatin gene may be an effective strategy for the treatment of glioma.

Animals ; Autoantigens ; genetics ; Brain Neoplasms ; blood supply ; therapy ; Cell Line, Tumor ; Cell Proliferation ; Collagen Type IV ; genetics ; Genetic Therapy ; Glioma ; blood supply ; pathology ; therapy ; Humans ; Mice ; Mice, Inbred BALB C ; Neovascularization, Pathologic ; prevention & control ; Platelet Endothelial Cell Adhesion Molecule-1 ; analysis ; Transfection

Based on the different permeability of DNA-intercalant dyes YO-PRO-1(YP) and propidium iodide (PI) to the membrane of viable, apoptotic and necrotic cells, cell samples were stained with 4?mol/L YP and 4?g/ml PI for 10 min, and the fluorescence intensity of both YP and PI were measured by fluorometer at Ex/Em wavelength of 485/538nm and 530/590nm, respectively. The correlation between YP fluorescence intensity and the apoptotic cell number was confirmed by fluorescence microscope and linear regression(r=0.999,P

OBJECTIVETo observe the efficacy and safety of PEG-interferon alpha-2a (PEG-IFNalpha-2a) treatment on lamivudine (LAM)-resistant chronic hepatitis B (CHB) patients.

METHODSEighty-one patients with lamivudine-resistant HBeAg (+) chronic hepatitis B patients were enrolled and divided into PEG-IFNalpha-2a treatment group (40 cases) and adefovir dipivoxil (ADV) control group (41 cases). Two groups were combined with LAM in the first 12 weeks(w). The ALT normalization rate, the HBV DNA and HBeAg negative rate, and the HBeAg seroconversion rate were observed in 12 W, 24 W, 48 W.

RESULTSThe ALT normalization rate in 12 W, 24 W of PEG-IFNalpha-2a group was 62.5% and 80.0%. And it was higher than that of ADV group. The HBeAg negative rate and HBeAg seroconversion rate in 48 W of PEG-IFNalpha-2a group were 60% and 57.5% , which were higher than that of ADV group. The difference was statistically significant (P < 0.05).

CONCLUSIONPEG-IFNalpha-2a treatment of lamivudine-resistant HBeAg (+) chronic hepatitis B is superior to ADV, and its security is well.

Adenine ; analogs & derivatives ; therapeutic use ; Adult ; Antiviral Agents ; therapeutic use ; DNA, Viral ; analysis ; drug effects ; Drug Resistance, Viral ; drug effects ; genetics ; Female ; Hepatitis B virus ; drug effects ; Hepatitis B, Chronic ; drug therapy ; virology ; Humans ; Interferon-alpha ; therapeutic use ; Interferons ; immunology ; pharmacology ; Lamivudine ; therapeutic use ; Male ; Middle Aged ; Mutation ; Organophosphonates ; therapeutic use ; Polyethylene Glycols ; therapeutic use ; Recombinant Proteins ; Treatment Outcome ; Watchful Waiting

Urine samples from 72 patients with diabetic nephropathy (DN) were analyzed and compared to those from 33 diabetic patients without albuminuria and 29 normal controls,using SELDI-TOF-MS (surface enhanced laser desorptiort/ionization time-of-flight mass spectrometry) and Biomarker Patterns Software,to identify differences in protein profile,generate a tree analysis pattern and evaluate the validity of the decision tree.The intensities of 6 peaks detected appeared upregulated,while 11 peaks downregulated,in DN group as compared to nonDN groups more than 2 folds (P