Humans ; Infant, Newborn ; Infant, Newborn, Diseases ; Lupus Erythematosus, Systemic

OBJECTIVETo study the impact of IFN-gamma on liver fibrosis and its possible mechanism. Thirty healthy male SD rats were randomly divided into two groups: fibrosis model group, IFN-gamma treatment group. Experimental liver fibrosis was induced by subcutaneous injection of CCl4. After 12-week-treatment, serum hyalurnic acid and TGF-beta1 was examined, histopathological changes and degrees of fibrosis were observed by optical microscopy. Meanwhile, the expression of TGF-beta1, TbetaR- I and Smad2/3 proteins was detected by immunohistochemistry and quantified by using computerized image analysis.

RESULTS(1) Pathological observation of hepatic specimens: histological examination showed that there were significant difference between normal group and fibrosis model group by comparing with the degrees of inflammation and fibrosis (P < 0.05). And the difference between fibrosis model group and IFN-gamma treatment group was significant (P < 0.05). (2) Changes of the hepatic fibrosis index (serum HA and TGF-beta1): the levels of serum HA, TGF-beta1 in fibrosis model group were higher than IFN-gamma treatment groups (P < 0.05). (3) Changes of gene protein levels about TGF-beta1/Smad: the expressions of TGF-beta1, TbetaR- I and Smad2/3 in rat hepatic tissue were detected with immunohistochemistry techniques. The expressions of the three items in model group were higher than normal group (P < 0.01). The difference between model group and IFN-gamma treatment group was significant (P < 0.05);

CONCLUSIONIFN-gamma treatment group had significant results on treating experimental hepatic fibrosis. By the way of inhibiting expressions of TGF-beta1, TbetaR- I, Smad2/3, IFN-gamma treatment group exerted its anti-fibrosis effect.

Animals ; Disease Models, Animal ; Humans ; Interferon-gamma ; therapeutic use ; Liver ; drug effects ; metabolism ; Liver Cirrhosis ; drug therapy ; genetics ; metabolism ; Male ; Rats ; Rats, Sprague-Dawley ; Smad2 Protein ; genetics ; metabolism ; Smad3 Protein ; genetics ; metabolism ; Transforming Growth Factor beta1 ; genetics ; metabolism

Objective To investigate the relationship between apoptosis of bone marrow cells and tumor necrosis factor-?(TNF-?),Fas/FasL expression in children with aplastic anemia.Methods The concentration of TNF-? in supernatant of cultured bone marrow mononuclear cell(BMMC) was measured by enzyme linked immunosorbent assay.The expression of Fas/FasL,apoptosis ratio of bone marrow CD34+ cell were evaluated by flow cytometry.Results The concentration of TNF-? in supernatant of cultured BMMC in AA group[SAA (27.9?8.20) ng/L;CAA (23.6?6.78) ng/L] increased significantly compared with control group(t=3.432 P0.05).Apoptosis ratio of CD34+ cell in SAA group[(24.6?9.56)%] and CAA group[(20.9?7.32)%] significantly increased compared with control group(t=3.492,3.458 Pa0.05).The concentration of TNF-? was positively correlated with the expression of CD34+ Fas+ in all types AA children(r=0.542 P0.05).Conclusions TNF-? and Fas/FasL system can be involved in inducing CD34+ cell apoptosis.This may contribute to understanding the decreased number of stem cells and bone marrow failure.

Objective To explore the correlation between-173G/C gene polymorphism of macrophage migration inhibitory factor(MIF) and Henoch-Schonlein purpura(HSP),Henoch-Schonlein purpura nephritis(HSPN) in children in Jiangxi Province.Methods One hundred and thirty-one ethnic Han children with HSP were enrolled,including 80 children with concurrent nephritis(HSPN group) and 51 children without nephritis(HSP without nephritis group).One hundred and five healthy children were used as the healthy control group.Germline DNA was extracted from peripheral blood by Promega blood genomic DNA kit.Polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) was used for genotyping the-173G/C polymorphism of MIF.Genotype distribution and allele frequencies were obtained by direct counting.Statistical analysis was performed by using SPSS 11.5 software.Allele and genotype distribution were compared by using the chi-square test.The relative risk of allele was described by odds ratios(OR) and 95% confidence intervals(95%CI).Results Three genotypes(GG,GC,CC) were detected in MIF-173 G/C.GG,GC genotypes were detected in HSP without nephritis and healthy control group.GG,GC and CC genotypes were detected in HSPN group.Mutant genotype(37.5%) and C allele frequency(20.0%) in HSPN group were significantly higher than those in healthy control group(20.0% and 10.0%,respectively)(?2=6.964,7.400,Pa

Objective: To observe the clinical efficacy of intradermal needle therapy for urinary retention after cervical cancer surgery. Methods: A total of 100 patients with urinary retention after cervical cancer surgery were randomized into a control group and an observation group, with 50 cases in each group. The control group was treated with basic nursing only, and the observation group was treated with additional intradermal needle therapy. Both groups were treated for 2 courses of treatment. The main symptom scores and residual urine volume of the two groups were observed before and after treatment, and the inpatient time, catheter indwelling time and the clinical efficacy were compared between the two groups. Results: The total effective rate was 96.0％ in the observation group and 88.0％ in the control group, and the difference between the two groups was statistically significant (P<0.05). After treatment, the main symptom scores and residual urine volume in both groups decreased significantly (all P<0.05), and the scores and residual urine volume in the observation group were significantly lower than those in the control group (all P<0.05). The inpatient time and catheter indwelling time in the observation group were significantly shorter than those in the control group (both P<0.05). Conclusion: Intradermal needle therapy has an obvious effect in improving symptoms of urinary retention after cervical cancer surgery, and the effect is significantly more persistent than that of simple basic nursing.

OBJECTIVETo investigate how network education can improve college students' knowledge on sexual and reproductive health in Ningbo city.

METHODSFrom December 2012 to June 2013, we conducted a questionnaire investigation among college students in Ningbo city about the effects of network education on their knowledge about sexual psychology, sexual physiology, sexual ethics, and reproductive health.

RESULTSA total of 7 362 college students accomplished the investigation, of whom 2 483 (42.1% males and 57.9% females) received network education, while the other 4 879 (24.1% males and 75.9% females) did not. Approximately 47.1% of the male and 28.0% of the female students acquired sexual and reproductive knowledge via network education. Reproductive health-related network education significantly enriched the students' knowledge about the reproductive system and sex, pubertal development, sexual physiology, conception and embryonic development, methods of contraception, sexual psychology, sexually transmitted diseases and their prevention, pregnancy care and eugenics, and environment- and occupation-related reproductive health (P < 0.01). It also remarkably improved their cognitive attitude towards reproductive health knowledge (P < 0.01). Those who received reproductive health-related network education showed a significantly higher rate of masturbation (P < 0.01) but markedly later time of the first masturbation (P < 0.01) than those who did not.

CONCLUSIONNetwork education can enhance the effect of reproductive health education among college students and improve their sexual experience and health.

China ; Contraception ; Female ; Health Education ; Health Knowledge, Attitudes, Practice ; Humans ; Male ; Masturbation ; Pregnancy ; Reproduction ; Reproductive Health ; Sexual Behavior ; physiology ; psychology ; Sexually Transmitted Diseases ; Students ; Surveys and Questionnaires ; Universities

Objective: To analyze the effects of Clostridium difficile toxin B (TcdB) on the proliferation and apoptosis of colon cancer cell line SW480 and the possible mechanisms related to cell apoptosis. Methods: SW480 cells were treated with different concentrations of TcdB. Cell proliferation was detected by MTT assay. Cell apoptosis and mitochondrial membrane potential were measured with flow cytometry. Results: TcdB significantly inhibited the proliferation of SW480 cells in a time-concentration dependent manner and the inhibition rate reached 46.36% at 48 h. Flow cytometry results showed that TcdB could induce the apoptosis of SW480 cells in a time-concentration dependent manner and a 20.83% apoptosis rate was induced by 800 ng/ml of TcdB at 48 h. Conclusions TcdB could inhibit the proliferation and induce the apoptosis of colon cancer SW480 cells, and the possible mechanisms might be relate to the initiation of mitochondrial apoptosis pathway.

OBJECTIVETo establish a drug-resistance cell line of human glioma mediated by MGMT.

METHODSSimulated the clinical usage of BCNU to establish a BCNU-resistant human glioma subline by cyclic exposing the U251 parent cells to a constant concentration of BCNU. The resistance index and the expression of MGMT mRNA of U251/BCNU were detected and compared the difference of in vitro proliferation between U251 and U251/BCNU.

RESULTSA subline--U251/BCNU was successfully established in about 4-month culture, which had a stable resistance to BCNU. U251/BCNU cells showed 17-fold higher resistance to BCNU than did U251 cells by MTT assay, while U251/BCNU cells expressed MGMT mRNA. The doubling time of U251 and U251/BCNU had no statistical difference.

CONCLUSIONA drug-resistance cell line of human glioma mediated by MGMT is established, which could provide experimental basis for further studies on the resistance mechanism and reversal methods of glioma chemotherapy.

ATP-Binding Cassette, Sub-Family B, Member 1 ; biosynthesis ; Brain Neoplasms ; pathology ; Cell Line, Tumor ; DNA Modification Methylases ; biosynthesis ; genetics ; Drug Resistance, Neoplasm ; genetics ; Glioma ; pathology ; Humans ; O(6)-Methylguanine-DNA Methyltransferase ; metabolism ; physiology

OBJECTIVETo investigate the expressions of glypican-3 (GPC3) mRNA in hepatocellular carcinoma (HCC) tissues and peripheral blood cells (PBCs), and to determine the values of GPC3 mRNA in the diagnosis of HCC and HCC micrometastasis.

METHODSUsing semi-quantitative and nested reverse transcription polymerase chain reactions (RT-PCR), we detected the expressions of AFP and GPC3 genes in the tissues of 41 HCC, 41 paracancer and 52 non-HCC liver samples (41 far from HCC tissues and 11 normal liver tissues), and in the PBCs of 67 specimens from subjects.

RESULTSThe semi-quantitative RT-PCR displayed GPC3 mRNA was expressed in all samples of tissues and PBCs, and the relative intensities of its expressions in HCC, paracancer, non-HCC liver tissues were 78.9 +/- 35.5, 30.6 +/- 21.6, 23.8 +/- 15.5 respectively. The AFP mRNA expression values were 61.2 +/- 32.6, 31.5 +/- 23.6, and 21.2 +/- 15.9 respectively. The expression of each gene in HCC differed significantly from those in other two kinds of tissue samples (P < 0.01). The expressions of GPC3 mRNA and AFP mRNA, accounting for 80.5% and 63.4% in all the HCC tissues, were higher than their respective peak values in the tissues of non-HCC liver (+1.96s), but the expressions of at least one of the two genes was elevated in 92.7% of all the HCC tissues. There was a significant difference between combined detection of two genes and single AFP mRNA detection in HCC tissues (P < 0.01). Clinicopathologically, AFP mRNA was related with the grade of HCC and serum AFP, while GPC3 mRNA was related with not only the grade of HCC but also the invasion of HCC. The relative intensities of GPC3 mRNA expressions in PBCs of 67 specimens was 15.9 +/- 9.0, and GPC3 mRNA expressed in three kinds of tissue samples were all stronger than its counterparts in PBCs (P < 0.01). The GPC3 mRNA expression values in PBCs of the HCC group and the non-HCC group were respectively 16.1 +/- 8.3, 15.6 +/- 10.2, there was no significant difference between the two groups. Of the HCC metastasis group and the HCC non-metastasis group, the respective GPC3 mRNA expression values in PBCs were 16.0 +/- 9.0 and 16.3 +/- 7.7, there was also no significant difference between the two groups. The nested RT-PCR showed that the positive rates of AFP mRNA expressions in PBCs from the HCC group and the non-HCC group were 56.1% and 23.1%, and the difference between the two groups was significant (P = 0.011). The positive rates of AFP mRNA expressions in PBCs from the HCC metastasis group and the HCC non-metastasis group were 80.9% and 30.0%, and there was also a significant difference between the two groups (P = 0.002).

CONCLUSIONSAlthough GPC3 mRNA is expressed broadly, it still may serve as a potential tissue biomarker in the diagnosis of HCC. Detecting the expression of the two genes in the tissues will improve the screening and diagnosis of HCC. GPC3 is prevalently transcribed in the PBCs, but we have not found any relationship between the GPC3 expression in PBCs and the metastasis or recurrence of hepatocellular carcinoma, thus we can not identify HCC micrometastasis with GPC3 mRNA.

Adult ; Aged ; Carcinoma, Hepatocellular ; diagnosis ; metabolism ; pathology ; Female ; Glypicans ; biosynthesis ; genetics ; Humans ; Liver Neoplasms ; diagnosis ; metabolism ; pathology ; Male ; Middle Aged ; Neoplasm Metastasis ; RNA, Messenger ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; alpha-Fetoproteins ; biosynthesis ; genetics

OBJECTIVEThis paper presents a statistical method of familial correlation on family data from case-control studies.

METHODSMarginal mean models of the probands and the relatives conditional on the proband's disease status, as well as the marginal association model of the relatives were modeled integrately. Conditional odds-ratio and marginal odds-ratio were used to measure the familial correlation.

RESULTSThe parameter's interpretation in the model was in accordance with sample characteristics. This method is more efficient due to making fully use of information of the probands and relatives. In addition, the method has all advantages of GEE2.

CONCLUSIONThe method in this paper efficiently and conveniently analyzes the family data from case-control studies to estimate the familial correlation on disease.

Bias ; Case-Control Studies ; China ; epidemiology ; Data Interpretation, Statistical ; Epidemiologic Methods ; Family Health ; Female ; Humans ; Liver Neoplasms ; epidemiology ; genetics ; Logistic Models ; Male ; Odds Ratio ; Ovarian Neoplasms ; epidemiology ; genetics ; Risk Factors