Colorectal cancer(CRC) is one of the most common tumors with a high prevalence of cancer-related morbidity and mortality.Several environmental factors,especially dietary factors,can affect the initiation and development of CRC.Recent studies have shown that adjusting nutrition components in diet,such as folate,calcium,vitamin D,selenium and fibre,may help to prevent the development of CRC.The objective of article is to review mechanisms of these nutritional components in the process of preventing CRC.

Objective To compare three different curative effects on hydrosalpinx before in vitro fertilization and embryo transfer (IVF-ET). Methods Patients receiving IVF-ET between January 2011 to December 2013 (n=731) due to tubal factor infertility (hydrosalpinx) were retrospectively analyzed. All patients were divided into four groups. Embolization group underwent fallopian tube embolization (n=257). Colostomy group underwent laparoscopic tubal umbrella end colosto?my (n=193). Excision group underwent laparoscopic tubal excision(n=198). Control group did not undergo any effusion be?fore transplantation (n=83). Results Comparing main indicators of ovarian hyperstimulation (the number of antral follicles, the dosage of gonadotropin (Gn), the number of retrieved oocytes), indicators were better in embolism group, colostomy group and control group than those in excision group. Comparing main indexes of IVF-ET (embryo implantation rate, clinical preg?nancy rate, abortion rate), indicators were better in embolism group, excision group than those in colostomy group while indi?cators in colostomy group were better than those in control group. The pregnancy rate in fallopian tube was the lowest in em?bolism group and excision group, and the highest in control group. Conclusion All three methods of processing hydrosal?pinx before transplantation ended with positive impact on IVF-ET, and fallopian tube embolization has certain advantages over the other two treatment measures.

Objective To compare the effects of fallopian tube recanalization and hydrotubation for treating partially obstructed fallopian tubes .Methods A retrospective analysis was conducted in 464 patients with partially obstructed bilateral fallopian tubes diagnosed by hysterosalpinography ,excluding other non -tubal infertility patients ,in the intervention department of our hospital Hospital from Jan .2005 to Dec .2010 .The patients were divided into 3 groups:fallopian tube recanalization group (157 cases) , hydrotubation group (155 cases) and control group(152 cases) .Results The intrauterine pregnancy rate of the fallopian tube reca-nalization group was higher than that of the hydrotubation group and control group .The ectopic pregnancy rate of the fallopian tube recanalization group was lower than that of the hydrotubation group and control group .The intrauterine pregnancy rate of the hydrotubation group was higher than that of the control group ,there was statistical difference between the two groups (P<0 .05) . While there was no statistical difference in the ectopic pregnancy rate between the hydrotubation group and the control group (P>0 .05) .Conclusion Active medical intervention can make the clinical benefit in the patients with partially obstructed fallopian tubes ,moreover ,fallopian tube recanalization is better than hydrotubation in the curative effect .

LEEP electro-scalpel is a type of cervical disease device. It belongs to the high frequency electro-knife in medical apparatus category. There is no domestic LEEP electro-scalpel at present. It is significant and important for the study group to resolve the safety and EMC problem and develop domestic LEEP electro-scalpel which is safe, stable and competitive in price while has the same surgery effect as the imported one.

Since the HLA system is one of the most complex human genetic polym- orphisms,its application in forensic medicine included disputed paternity and criminal identification,have been fairly recognized. The present paper reported the results of our study about the HLA typing in human blood stain,serum and saliva,it was concluded that:(1).The existed strong anti-complementary activity in human blood stain when the amount of complement used in microlym-phocytotoxicity inhibition test(MLIT) was incresed to 10?l,it was found that the results of HLA-All,-B 5 typing in bloodstains were all correct,and the detectable period was at least 90 days; (2).The soluble HLA-A antigens in human serum could reliable detected with MLIT;(3).The soluble HLA-A antigens were also present in the human siliva.

Objective To investigate the effects of DNA methylation and histone acetylation on cell cycle progression and expression of tumor suppressor genes in human colonic cancer cells. Methods Three colonic cancer cell lines(HT 29,SW1116 and Colo 320) were treated with the DNA methylation inhibitor, 5 aza 2' deoxycytidine(5 aza dC) and/or the histone deacetylase(HDAC) inhibitor, trichostatin A(TSA)and sodium butyrate. The methylation status of the promoter of the p16 INK4A gene was assayed by methylation specific PCR(MSP). The expression of p16 INK4A and p21 WAF1 were analyzed by RT PCR. Cell cycle distribution was studied by flow cytometry. Results p16 INK4A expression was weakly detected in three colon cancer cells (HT 29,SW1116 and Colo 320) and p21 WAF1 expression was not detected in SW1116 and Colo 320 cells before treatment. The methylation status of the promoter of the p16 INK4A gene was significantly decreased and mRNA expression was markedly increased in HT 29 cells after treatment with 1 ?mol/L but not 10 ?mol/L of 5 aza dC for 24 hours. In SW1116 and Colo 320 cells, the expression of p16 INK4A was obviously enhanced at 10 ?mol/L or 5 ?mol/L of 5 aza dC for 24 hours. However, p21 WAF1 gene expression has not been detected. Interestingly, after treatment of TSA or sodium butyrate, the transcription of p21 WAF1 was significantly up regulated in these two cell lines. In addition, 5 aza dC did not affect cell cycle distribution, but TSA or sodium butyrate blocked cells mainly in the G 1 phases. Conclusions The expression of p16 INK4A gene was regulated by DNA methylation in three human colonic cancer cells. The expression of p21 WAF1 gene was regulated by histone acetylation in SW1116 and Colo 320. In these two cell lines, histone hyperacetylation causes a G 1 cell cycle arrest.

BACKGROUND:The main therapy of severe aplastic anemia in children is immunosuppressive therapy or stem celltransplantation, but the latter one is restricted due to few donor sources. Haploidentical hematopoietic stem celltransplantation is commonly used in leukemia, but it is stil rarely reported in the treatment of aplastic anemia. OBJECTIVE:To investigate the effect of haploidentical hematopoietic stem celltransplantation combined with placenta-derived mesenchymal stem celltransplantation for children with severe aplastic anemia. METHODS:A 7-year-old girl who had been confirmed as having severe aplastic anemia for 1.5 years received a cotransplantation of haploidentical hematopoietic stem cells combined with placenta-derived mesenchymal stem cells on July 9th , 2012. The donor was her mother. The preconditioning regimen consisted of fludarabine, cyclophosphamide, and anti-thymocyte globulin. RESULTS AND CONCLUSION:Time of neutrophil recovery (>0.5×10 9/L) was+9 days, and hematopoietic reconstruction was complete at+12 days. The short tandem repeat analysis showed 100%donor’s genotype at+100 days. Immunosuppressive drugs were stopped at+8 months, and no acute or chronic graft-versus-host disease occurred. With a fol ow-up of 18 months, she was in the disease-free survival period. Our findings suggest that the cotransplantation of al ogeneic haploidentical hematopoietic stem cells and placenta-derived mesenchymal stem cells is a new effective approach for children with severe aplastic anemia, which is worth exploring in the future.

Objective To investigate the impact of reduced glutathione(GSH) on the prolifera- tion,oxidative stress and transforming growth factor?1(TGF-?1) expression of human hepatocytes and hepatic stellate cells(HSCs)(LX-2 cell line).Methods Human hepatocytes and HSCs were incubated with various concentrations of GSH(0.5—50 mmol/L or 0.5—10 mmol/L).The effects of GSH on the proliferation of hepatocytes and HSCs were studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphennyhera- zolium bromide colorimetric assay.Human hepatocytes and HSCs were co-cultured with GSH and ferric nitrilotriacetic acid,superoxide dismutase (SOD) activity and malondialdehyde (MDA) contents were detected.HSCs were incubated with high(5.0 mmol/L),media(2.5 mmol/L) and low (0.5 mmol/L) concentrations of GSH,the expressions of TGF-?1 mRNA and protein were detected by ELISA and real- time PCR.Results In concentration ranged from 2.5 to 10 mmol/L,the GSH could promote the pro- liferation of hepatocytes but no HSCs,significantly increased the activity of SOD and decrease the con- tents of MDA in hepatocytes and HSCs,and inhibited the expression of TGF-?1 in HSCs.Conclusions GSH can not only promote the proliferation of hepatocytes,but also protect hepatocytes and HSCs from oxidative stress,and inhibit the secretion of TGF-?1 in HSCs.GSH may play a role in hepatocellular protection,antioxidation and anti-fibrosis.

Objective:To investigate the expression of maternally expressed gene 3 (MEG3), a long non-coding RNA gene, in gastric can-cer tissues;determine the relationship of MEG3 with the prognosis of gastric cancer;and explore the relationship between MEG3 and apoptosis-associated protein P53 as well as murine double minute 2 (MDM2). Methods:Fifty-five consecutive patients with gastric cancer admitted to Qingdao Municipal Hospital for surgical treatment from September 2012 to June 2013 were included in this study. Gastric cancer and paired normal tissues were collected. The expression of MEG3 was tested through real-time quantitative poly-merase chain reaction (qRT-PCR). Western blot analysis was used to detect the expression of P53 and MDM2 in gastric cancer and eval-uate their correlations with MEG3. Results:The expression of MEG3 decreased in cancer tissues (7.98±0.19) relative to the correspond-ing normal tissues (9.47±0.18) (P<0.05). P53 and MDM2 showed negative relationships in the gastric cancer and normal tissues. A posi-tive relationship was found between P53 and MEG3 (r=0.591, P<0.05), whereas a negative relationship was found between MDM2 and MEG3 (r=?0.346, P<0.05). The median survival time was significantly prolonged in patients with high MEG3 expression compared with patients with low MEG3 expression. Conclusion:MEG3 exerts an inhibiting effect on the development of gastric cancer. MEG3, P53, and MDM2 may have important relationships in the biological mechanisms of gastric cancer development. Detecting the expression level of MEG3 may be useful for the prognosis of gastric cancer.

Objective To analyze the effect of eukaryotic expression vector containing sense and antisense DNA methyltransferase (DNMT1) gene on the transcript level of tumor associated genes in human colon cancer cell line. Methods Recombinant plasmid, including sense DNMT1 (HMT) and antisense DNMT1 (THM) gene, were constructed and transfected into SW1116 cell by using the lipofectamine. Then G418 filtration was performed. The expression of DNMT1 protein was examined by Western blotting. The transcription level of hMLH1, hMSH2, c myc and p16 INK4A genes were detected by RT PCR. Results The sense and antisense eukaryotic expression vectors were successfully constructed and then the constructed recombinant plasmids were transfected into SW1116 cell. The protein levels of DNMT1 have been up regulated and down regulated in SW1116 cells transfected with HMT and THM plasmids, respectively. The mRNA level of hMLH1, hMSH2, c myc gene were down regulated in the sense DNMT1 transfected cell. The mRNA level of hMSH2 was up regulated in the antisense DNMT1 transfected cell. However, the transcription level of p16 INK4A gene could not be associated with DNMT1 in SW1116 cell.Conclusion DNMT1 can regulate the expression of the tumor associated genes in human colon cancer cell line SW1116.