Background:One of the soil pollution assessment criterions is bacterial contamination. Soil bacterial contamination has negative impact on water, air, food stuff, human health as well as soil biological activity and soil purification process. The soil of populated area is contaminated by animal and human solid and liquid wastes, dead plants and industrial and household drainage water. Soil becomes a source harboring and transmitting pathogens due to the fact that pathogens are transmitted to the soil by the wastes of patients, human and animal corpses (dead bodies) died of infectious diseases, plants and water. Since it is difficult to detect pathogens from outside environment, the level of soil bacterial contamination is determined by the way of detecting medically important group of bacteria such as E.coli, Cl.perfringens, Proteus and thermophilic bacteria. Aim:Our survey objective is to determine level of soil contamination of Ulaanbaatar, Erdenet, Darkhan city’s by using microbiological method. Results and Discussion:1.Microbiological characteristics of soil bacterial quantitative assessment of the cities surveyed in Ulaanbaatar, all soil samples, Darkhan city, 72.2% and Erdenet, 54.5% belong to higher contamination levels. In 2009, Ulaanbaatar the result of E.coli titer 0.004, anaerobic titer 0,001 and thermophilic bacterial number 28,8 x10 c/g revealed.2.Compared to the average Ulaanbaatar, Darkhan city colon E.coli average titer of 1.25 times and anaerobic-titer 2 times and thermophilic bacteria was less than 1.6 times the number of a city for these parameters 1.5 times and 2 times and 1.5 timesis low.

Mongolian blue spots are birthmarks that are present at birth and their most common location issacrococcygeal or lumbar area. There are macular and round, oval or irregular in shape. Lesionsmay be single or multiple. They usually spontaneously regress and disappear during childhood.The prevalence of Mongolian blue spots varies among different ethnic groups according to theoverall depth of pigmentation. Mongolian blue spots are common among Asian, East Indian, andAfrican races, but rare among Caucasian and other races. Mongolian blue spot is a congenital,developmental condition exclusively involving the skin. Mongolian blue spot results from entrapmentof melanocytes in the dermis during their migration from the neural crest into the epidermis. Thismigration is regulated by exogenous peptide growth factors that work by the activation of tyrosinekinase receptors. It is postulated that accumulated metabolites such as GM1and heparin sulfatebind to this tyrosine kinase receptor and lead to severe neurologic manifestations and aberrantneural crest migration.

INTRODUCTION: Hepatitis B virus (HBV) infection is a highly endemic in Mongolia. Consequently, complications of HBV including livercirrhosis and primary hepatocellular carcinoma, are crucial public health problems in the country. Since 1991, hepatitisB vaccination has been an integrated part of Mongolia’s Expanded Programme of Immunization (EPI). Since the HBVvaccination program has been implemented in Mongolia, there are few studies of HBV prevalence among children, itis essential to assess the effectiveness of HBV vaccination through the prevalence of hepatitis B virus carriage (i.e.,HBsAg) among children in Ulaanbaatar.GoalTo assess prevalence of HBV carriage and vaccination coverage among 4-6 year-old children in UlaanbaatarMATERIAL AND METHODS:∎ A representative, population based cross-sectional study was implemented in Ulaanbaatar.∎ A retrospective descriptive study design was used to estimate the HB vaccination coverage among 4-6 year-oldchildren in Ulaanbaatar.∎ A total of 2200 children, ages 4 to 6 years, were sampled using a stratified conducted, with stratified, multistage,random cluster design from 40 sub districts of 5 districts in Ulaanbaatar.∎ The children, aged 4 to 6 years, (n=1988) were tested for serological marker of HBV HBsAg.∎ All data (dose, species, and date) of the HepB vaccination were collected from the immunization record of thechildren.∎ Closed and open ended questionnaires were asked by parents to assess some social and demographicfactors.RESULT:Of the 2200 children sampled 183 children were not present at their home address and 29 children refused to participatein the study. Thus, 1988 children participated from Ulaanbaatar city (353 of from Khan-Uul district, 440 from Bayanzurkhdistrict, 400 from Bayangol district, 344 from Sukhbaatar district, 451 from Songinokhairhan district) (Response proportion90.3 percent). The mean age of children was 4.97±0.8 years with a range of 4-6 years; 1023(51%) were boys. Rapidtest results are available for all 1988 children; 0.3 percent (n=6) of whom were HBsAg carriers. HBsAg prevalence of4,5 and 6 year-old children were 0.15 percent, 0.43 percent and 0.32 percent, respectively. No association betweengender and HBsAg was identified. The administration of HB vaccine birth dose, HepB2 and HepB3 were 98.2 percent,94 percent, and 91 percent, respectively. Among children with immunization cards, 1089 (81.5 percent) children werecompletely vaccinated, 237 (17.7 percent) incompletely vaccinated and 11(0.8 percent) not vaccinated with hepatitisB vaccine. Prevalence of HBsAg carriage among children with immunization record was 0.18 percent and withoutimmunization records was 0.46 percent.CONCLUSION:Prevalence (0.31 percent) of HBV carriage among the young generation meaningfully declined compared with those ofprevious studies in Ulaanbaatar as a result of Expanded Program of Immunization. There was no significant associationbetween age or sex and HBsAg carriers.

The purpose of the present study was to elucidate genealogical and clinical features of hereditary neuropathy in the several kindreds of Gobi-Altai province.Materials and Methods: In the present study, we investigated five kindreds originated from Bayan-Uul sum, Gobi-Altai province on the basis of previous surveys. Each participant was enrolled for genealogical and neurological examinations according to specific questionnaire. We also collected biological samples for further genetic study. Genomic DNA was isolated from biological samples, and quantitative analysis of DNA was determined by spectrophotometer and Picogreen assays.Results: Twenty members from five kindreds were investigated. Genealogical analysis revealed that there is a linkage between two kindreds within the families enrolled into study, whereas no association was revealed among the other pedigrees. As a phenotype of the hereditary neuropathy, the clinical features were inherited in every generation, and the inheritance was not dependent on the gender. In neurological examination, age of hereditary neuropathy onset was detected as follows. The clinical features appeared in the first decade of life in 4 patients, in the second decade of life in 5 patients, and for the other members the disease started in the age of over 20 years. Common clinical features of hereditary neuropathy were characterized by hypomimic- and mask shape face, muscular atrophy of upper and lower limbs, and pes cavus. Interestingly five female patients had similar gynecological problems. Conclusions:1. The hereditary neuropathy exists in the kindreds of Bayan-Uul sum, Gobi-Altai province and the type of inheritance could be categorized as autosomal dominant.2. Onset of hereditary neuropathy disease was started mostly in the second decade of life. Common clinical features of hereditary neuropathy were characterized by hypomimic- and mask shape face, muscular atrophy of upper and lower limbs, and pes cavus. Apart from general clinical features, the specific complications related to metabolic disorders and pregnancy was detected.

BackgroundHuman vitamin D status primarily depends on skin exposure to the ultraviolet B (UVB) spectrum of the sunlight.Despite the many days of sunshine in Mongolia, the northern latitute means that much of the UVB is filteredout as it passes through the atmosphere. Studies of Mongolian infants, schoolchildren, and pregnant womenreveal prevalent and profound vitamin D deficiency in the winter months in Mongolia. To date, there has notbeen a single study of the vitamin D levels of Mongolian men, and no studies of working age women outside ofUlaanbaatar. The goal of this study is to determine Vitamin D levels among Mongolian working age populationin different geographical areas, in different seasons, and in different work settings.MethodsThis cross-sectional study was conducted among 120 healthy adults, recruited by a multistage clustersampling method in Ulaanbaatar, South Gobi, and Bulgan. Each participant was tested for serum 25(OH)Dconcentrations, twice in winter and summer. Samples were measured by ELISA. The paired sampling (120summer samples/120 winter samples total 240 samples) frame allowed us to compare an individual’s winter25(OH)D levels to their own summer 25(OH)D levels, avoiding any confounding by differences betweenindividuals. A paired T-test (two sided) with unequal variances was used to test for differences in 25(OH)Dlevels among study groups.Results95% of all participants were Vitamin D deficient (<20 ng/ml) in winter, 24% deficient in summer (p < 0.001).The mean winter serum 25(OH)D levels were (±SD) 10.7±5.3 ng/ml, which were doubled in the summer to(±SD) 26.1±8.1 ng/ml. In all three regions, men and women had similar mean 25(OH)D levels. In Ulaanbaatar,office workers had higher winter 25(OH)D levels than urban outdoor workers. Surprisingly, office workersin the Gobi had higher 25(OH)D levels than nomads in both winter and summer. In Bulgan, there were nodifferences between office workers and nomads in any season.ConclusionWe observe that low vitamin D levels are more prevalent in our winter samples of healthy working age adults.The prevalence of vitamin D deficiency is very high amongst the adult population. These data suggest a needto increase vitamin D intake either through improved fortification and/or supplementation.

Introduction: Shilajit and Rhodiola Rosa L are widely used in Mongolian Traditional medicine for the management of diseases and for fracture healing. The aim of this study was to evaluate the pharmacology effects of the “Vitos” Shilajit Shot preparation on fracture healing and callus stages in rats by X-ray. Material and methods: We used non-liner Wistar rats for in vivo experiments, there are sixteen rats were randomly grouped as a positive control, negative control, “Vitos” Shilajit shot experimental and standard groups. The positive group was as healthy animals and other groups were created femoral fracture by Bonnaren’s device. Then negative control group was oral administered distilled water, whereas 4.1ml/kg of “Vitos’ Shilajit shot administrated via oral gavage to experimental group through 56 days. X-rays were performed to assess fracture healing effects within 14, 28, 42, 56 days and callus stages. Results: Significantly higher callus volume and callus staging were observed in the “Vitos” Shilajit shot group compared with the negative control and standard groups. Also “Vitos” Shilajit shot group was becoming as bridging between both end of fractures and get hard callus formulation ready observation of X-Ray radiograph on 4 weeks post fracture. The fracture healing process was slightly reached to callus remodulation such as final stage of bone formulation on 56^th day. Conclusion The results of this study reveal that, “Vitos’ shot preparation, which contains an extract of Rhodiola Rosa L and thick extract of Shijilat has a treatment effect and enhancing and supporting callus of bone fracture healing.

Background: The incidence of gastric cancer has been declining worldwide in recent years; on the contrary, it has increased in the last decade in Mongolia. In Mongolia, over 80% of gastric cancer cases are diagnosed in the late stage. We performed a gastroduodenoscopy for screening and histological evaluation to diagnose gastric cancer. These methods are an effective diagnostic modality for gastric diseases; however, invasive and cause discomfort, making it an undesirable procedure for patients. Aims: To determine serum PGs and H.pylori IgG in atrophic gastritis and gastric cancer patients and evaluate the risk by ABC(D) classification. Materials and Methods: We selected 40 atrophic gastritis and 36 newly diagnosed gastric cancer patients from National Cancer Center of Mongolia, before surgery and other therapies. Besides, we enrolled population-based 38 healthy controls. Subjects of three groups were matched by age (±1) and sex. Written informed consents were obtained from all subjects. The fasting blood samples were collected and tested PGI, PGII, and H.Pylori IgG levels by enzyme-linked immunosorbent assay. Also, PGI to PGII ratio (PGI/II ratio) was calculated. We classified subjects into four groups based on ABC(D) classification. All statistical analyses were performed by SPSS (version 26.0, Chicago, IL, USA) software. Results: Median age of the subjects was 62, 52.6% (n=60) were male. Proportions of family history of gastric cancer and previous history of gastric disease were significantly higher in the gastric cancer group compared with atrophic gastritis and healthy control groups (p<0.05, p<0.05). H.pylori was positive in 67 (58.8%) subjects according to H.pylori IgG assay and there was no difference between study groups. The serum PGI level and was significantly decreased in gastric cancer and atrophic gastritis groups as compared to the healthy control (p<0.05, p<0.05). The PGI/II ratio was significantly lower in the gastric cancer group compared with the healthy control (p<0.01). The optimal cut off value of PGI was ≤35.25 ng/ml (AUC 64.3, 95% CI 51.3-77.2, p<0.05) for gastric cancer and PGI was ≤75.07 ng/ml (AUC 65.2, 95% CI 53.0-77.3, p<0.05) for atrophic gastritis. Also, the optimal cut off value of PGI/II ratio was ≤5.27 (AUC 71.6, 95% CI 69.6-82.8, p<0.01) for gastric cancer and PGI/II ratio was ≤6.25 (AUC 62.7, 95% CI 50.1-75.3, p<0.05) for atrophic gastritis. According to classification of atrophic gastritis patients and healthy control, group D had higher proportion of atrophic gastritis cases than group A, B and C (OR 5.04, 95% CI 1.13-22.50, p<0.05). According to classification of gastric cancer patients and healthy control, groups C had higher proportion of gastric cancer cases than group A, B and D (OR 6.19, 95% CI 1.04-36.78, p<0.05). Conclusion Our findings suggest that PGs level and H.pylori IgG may predict development of gastric cancer and could identifying individuals at high risk of gastric cancer and precancerous lesions who may need endoscopy.

Background and Aims: Hepatocellular carcinoma (HCC) is a common cause of cancer related death in Mongolia. Early diagnosis is the very important management to increase successful treatment and survival rate. Glypican-3 (GPC3) protein is highly expressed in hepatocellular carcinoma (HCC) tissue and in serum of HCC patients. Recent studies have been conducted and suggested as a diagnostic biomarker for detecting HCC in the early stage. Therefore, we investigated the diagnostic value of the serum GPC3 level and compared it to the alpha-fetoprotein (AFP) level as a diagnostic biomarker of HCC. Methods: We enrolled a total of 90 participants and divided into 3 groups with HCC (30), with liver cirrhosis (LC/30) and healthy (30) as the control group (30). GPC3 and AFP serum (sGPC-3, sAFP) levels were measured using commercially available enzyme-linked immunosorbent assay kits. The diagnostic accuracy was analyzed using the receiver operating characteristics (ROC) curve and estimated sensitivity and specificity of each biomarker. Results: sGPC3 was significantly elevated in the HCC group as compared to liver cirrhosis and healthy subjects (658±138.2 pg/ml, 378±25.5 pg/ml, 356.3±29 pg/ml) respectively. sGPC-3 sensitivity was 96.6% and specificity was 100%. The area under the ROC curve (AUC) for GPC3 was 0.999 (0.996- 1.0).
In comparison, the mean of AFP was significantly higher in HCC (16.9±11.7 ng/ml) than in LC (6.7±7.6 ng/ml) and in healthy subject (3.3±2.1 ng/ml) and AFP sensitivity was 43,3 %, specificity was 95 % with an AUC of 0.808 (0.696- 0.921).
The combination of GPC-3 with AFP achieved the highest sensitivity (97.1%) and specificity (97%). Conclusion Serum GPC3 has a higher sensitivity than AFP for the early diagnosis of HCC. Combination of two markers showed greatest diagnostic accuracy.

Introduction: Base excision repair (BER) is mainly responsible for the correction of small base changes of DNA damage. BER pathway involved many enzymes including OGG1 and XRCC1. The defective DNA repair is associated with an increased risk of various cancers including hematologic malignancies-leukemia and myelodysplastic syndrome (MDS). However, it is deniably these polymorphisms alter the susceptibility and clinical outcome of MDS patients. The aim: This study was to evaluate the impact of polymorphisms in gene encoding one protein of BER system: XRCC1 Arg399Gln in MDS and healthy population. Methods: In this study, we recruited 60 health control group [median 47.9 years, 9 MDS subjects [median 56.6 years] were included in this study. Genotyping was carried out by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Allele and genotype frequencies were calculated by direct counting. Result: The frequencies of genotypes of XRCC1 Arg399Gln were as follows: Arg /Arg 1 (11%), Arg/Gln 6 (66%), Gln/Gln 2 (22%) in MDS and Arg /Arg 18.4%, Arg/Gln40%, Gln/Gln41.6% in health control for XRCC1 Arg399Gln. The result revealed that genotypes Arg399Gln increased the risk of MDS In conclusion this study is the first to analyze XRCC1 SNPs and their associated risk of MDS in Mongolian samples. To fully understand the role of DNA damage and DNA repair in the MDS, prospective studies are needed and other genes (OGG1 Ser326Cys, MUTYH Gln324His, APE Asp148Glu) of base excision repair pathway should be analyzed.