Introduction: Sexually transmitted infections (STIs) are common in the developing countries. Sexually transmitted infections are among the most important causes of spontaneous abortion, premature rupture of membranes, preterm delivery, stillbirth, low birth weight, neonatal infection and postpartum endometritis and a major public health problem in the world.Goal: The goal of this study is to search peculiarity of delivery in women with STI.Materials and Methods: This study is a prospective cohort study which was done 2009-2010. In this study 120 pregnant women were involved. In case group were attended 60 women with STI and 60 women without STI in control group. The 40 pregnant women of case group (I group) were done treatment of STI and 20 pregnant women of case group (II group) were not done treatment of STI. All women were diagnosed with STI including syphilis, gonorrhea, Chlamydia and trichomoniasis. Statistical analysis has been done by SPSS 13.0 programm.Results: Mean gestational age at the first antenatal visit in I group was significantly earlier than in group II (13.5±4.5 weeks and 18.8±7.2 weeks respectively; p=0.005) but was similar to that of control group (13.6±5.2 weeks; P not significant). The frequency of preterm delivery and PROM was significantly lower in group I (12.5%, 17.5% respectively) than group II (30.0%, 40.0% respectively). In terms of II group preterm delivery and PROM were from 4 to 5 times more in comparison to control group. Low birth weight was significantly lower in women of group I (17.5%) than group II (30.0%; p=0.04) and in group II was 3 times more in comparison to control group(11.7%; p=0.008). Conclusions: The frequency of premature delivery, PROM, low birth weight were higher in the pregnant women who untreated STI. The first pprenatal visit is late and prenatal care inadequate were cause untreated in the pregnant women with STI.

Introduction: The aim of this research project is to elucidate the crosstalk of innate and adaptive immune reactions against the DNA containing bacteria. : This study held in the Core laboratory, Science Technology Center, Mongolian National University of Medical Sciences (MNUMS). Murine aortal endothelial cells, END-D cultured and the cell viability checked by MTT assay. In addition, the NO production, protein and gene expression studied by Griess Reagent assay, R.T-PCR and immunoblotting, respectively. Results: 0.1µM, 1µM and 10µM of TLR9 ligand exhibited no cytotoxic action against the cells by MTT assay. IFN-ү alone induced NO production in END-D cells. In the other hand, TLR9 ligand at 0.1µM, 1µM and 10µM up-regulated IFN-ү induced NO production in dose dependent manner. RTPCR results exhibit that TLR9 ligand up regulates iNOS mRNA. Immunoblotting analysis showed the enhanced iNOS protein expression and phosphorylation of STAT1 in cells pre-treated with TLR9 ligand. Discussion: We have demonstrated CpG DNA, TLR9 ligand, up-regulates IFN-ү induced NO via enhanced IFN-ү signaling. The result of Western Blotting and RT-PCR support the up-regulation of NO. CpG DNA can be used as agent against virus and bacteria. Further research need to be conducted. Conclusion TLR9 ligand, CpG DNA up-regulates IFN-ү induced NO production in time and dose dependent manner. TLR9 ligand augments the expression of iNOS mRNA and STAT1 phosphorylation in response to IFN-ү.