Background: Copper is a mineral that is involved in many functions og the human body and copper has antibacterial reaction. However many scientists have studied the antibacterial activity of nano copper, in our country, the lack of research is the basis of our research. Aim: Determination of antibacterial activity of colloidal copper (CuNP) Materials and Methods: The study protocol was reviewed and approved by the Research Ethics Review Committee of the Mongolian National University of Medical Sciences on February 18, 2022 (Protocol No. 2022/3-02). An ionized copper solution was produced by passing an electric current (19–20 V, 3–5 A, for 24 h) through sterilized distilled water using copper plates. Ascorbic acid was then added to prepare colloidal copper. The concentration was determined using a PPM meter, and the solution was filtered through a 0.22 µm bacterial filter. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against standard bacterial strains were determined by the broth dilution method. To determine the bactericidal time, bacterial cultures were exposed to the bactericidal concentration and subcultured hourly for 10 hours. Additionally, antibacterial activity was evaluated on Mueller–Hinton agar using the disk diffusion method according to CLSI standards, where 20 µL of colloidal copper was applied onto antibiotic disks. The plates were incubated at 37°C for 24 hours, and the diameter of the inhibition zones was measured. Result: The concentration of the prepared colloidal copper was 0.7 ppm. Using the broth dilution method, complete bactericidal activity was observed at 0.006 ppm against Klebsiella pneumoniae, Escherichia coli, and Salmonella enteritidis, while Pseudomonas aeruginosa was completely killed at 0.008 ppm. In terms of exposure time, complete bacterial killing occurred after 2 hours for S. enteritidis and K. pneumoniae, after 6 hours for E. coli, and after 11 hours for P. aeruginosa. In addition, antibacterial activity was evaluated on Mueller–Hinton agar using the disk diffusion method according to CLSI standards. Colloidal copper increased the inhibition zone diameter of most antibiotics by 1–5 mm, particularly against P. aeruginosa. In K. pneumoniae, the activity of aztreonam and ceftriaxone was enhanced. When evaluating the inhibition zone diameter of cefotaxime against E. coli, the susceptibility result changed from intermediate to susceptible, while no significant change was observed for the other antibiotics tested. For K. pneumoniae, the addition of colloidal copper increased the inhibition zone diameter of aztreonam and ceftriaxone by approximately 1–2 mm. In P. aeruginosa, the inhibition zone diameters of most antibiotics increased by 1–5 mm; however, the activity of imipenem decreased. For S. enteritidis, most antibiotics showed an increase in susceptibility of approximately 1–2 mm, while ceftriaxone showed no observable effect. Conclusion 1. Colloidal copper solution, at low concentrations, exhibits bactericidal activity against some Gram-negative rod-shaped bacteria. 2. Colloidal copper solution shows a synergistic effect with certain drugs, enhancing their activity; however, it exhibits an inhibitory effect on the activity of imipenem.

Background: Numerous international studies have established that the antibacterial activity of honey is attributed to its key components, including hydrogen peroxide, methylglyoxal, peptides, polyphenolic compounds, high sugar content, and acidic pH. Despite the vast consumption of different types of honey in Mongolia, there is a lack of sufficient scientific evidence on their antibacterial properties, which served as the rationale for conducting this study. Aim: A study comparing the antibacterial activity of honey commonly traded in Mongolia. Materials and Methods: The study was conducted using an experimental research design. Eight standard pathogenic bacterial strains were utilized: Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 1706, Staphylococcus aureus ATCC 25923, Methicillin-resistant Staphylococcus aureus (MRSA) ATCC 700699, Staphylococcus epidermidis ATCC 35984, Salmonella enterica ATCC 13076, and Acinetobacter baumannii ATCC 19606. A total of 14 honey samples were selected for the study, comprising 11 samples sourced from the Uvs, Tuv, Sukhbaatar, Khentii, Dornod, Darkhan, Selenge, and Khuvsgul provinces of Mongolia, and 3 Manuka-type honey samples from Australia. The samples were serially diluted in broth using a 96-well U-bottom microtiter plate. One microliter of each bacterial suspension was added, and the plates were incubated at 37°C for 18–24 hours. Subsequently, the cultures were spread onto Mueller-Hinton agar and incubated under the same conditions. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined by evaluating bacterial growth inhibition and bactericidal activity, respectively. Result: Among the tested samples, the Manuka honey with MGO 570 and the honey collected from Tumentsogt soum in Sukhbaatar province exhibited the most potent antibacterial activity against MRSA, with a minimum inhibitory concentration (MIC) of 12.5% (v/v) and a minimum bactericidal concentration (MBC) of 25% (v/v). In contrast, the antibacterial activity of Manuka honey with UMF 5 and the honeys sourced from Tuv, Uvs, and Khalkhgol soum in Dornod province demonstrated MIC and MBC values of 25% (v/v) and 50% (v/v), respectively. The Manuka honey with MGO 30, as well as the honeys collected from Selenge, Darkhan, Sukhbaatar, Khentii, and Rashaant and Tarialan soums in Khuvsgul province, showed comparatively weaker activity against MRSA, Salmonella enterica, Staphylococcus epidermidis, Escherichia coli, and Staphylococcus aureus. Conclusion 1. The antibacterial activity of natural and cultivated floral honeys was assessed by determining their minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against eight standard bacterial strains. 2. All seven natural floral honey samples exhibited measurable antibacterial effects against the tested strains, whereas some of the cultivated floral honey samples showed no observable activity against certain bacterial strains.

Introduction: Following the COVID-19 lockdown, the introduction of powered mopeds and scooters into urban mobility in Mongolia, without basic traffic regulatory frameworks such as vehicle classification, participation rules, age limits for riders, or parking regulations may have contributed to an increased risk of pedestrian injuries. Objective: To examine temporal trends in pedestrian injuries in Mongolia and to assess the impact of the emergence of micro mobility, while accounting for COVID-19 lockdowns, using an interrupted time-series analysis. Methods: We conducted an interrupted time-series analysis using national data on pedestrian injuries in Mongolia from January 2016 to December 2024. Monthly pedestrian injury rates per 10,000 population were calculated and stratified by age groups, regressing it on the number of months after January 2016 (the beginning of the study), after November 2020 (the lockdowns started), after May 2021 (the lockdown lifted and new mode of urban transportation started to release). Results: During the 9-year study period, there were 41,063 pedestrians, of whom 51.5% were male. The monthly rate of overall pedestrian injury started to decrease after the COVID-19 lockdowns possibly due to reduced traffic activity. However, following the lifting of restrictions, the trend started to increase among the age groups under 10 years (1.8%, 95% CI: 0.8–2.8), 10–19 years (1.6%, 95% CI: 0.3–2.9), 50–59 years (0.6%, 95% CI: 0.1–1.2), and 60–69 years (1.3%, 95% CI: 0.4–2.2). Conclusion The increase in pedestrian injuries suggests that the emergence of micromobility may have contributed to higher injury risk for pedestrians in Mongolia. This highlights the urgent need for change in infrastructure and regulations governing micromobility usage to enhance pedestrian safety.

Background: Research on lactic acid bacteria has confirmed how specific strains possess probiotic properties and impart unique sensory characteristics to food products. The use of probiotic lactic acid bacteria in many food products, thus confers various health benefits to humans when they are frequently consumed in adequate amounts. Aim: To determine the effect of lactic acid bacteria on the growth of tomatoes. Materials and Methods: The lactic acid bacteria were cultured using the Lactobacillus medium from whipping cream and Dandelion (Taraxacum mongolicum) and identified using the MALDI-TOF MS automated microbial identification analyzer. A solution was prepared using Lactobacillus delbrueckii isolated from whipping cream and Lactobacillus gasseri isolated from Dandelion (10^7CFU/ml), and sterilized tomato seeds were watered for 10 days with the solution, while sterilized distilled water was used as a control. The germination rate of the seeds and the root length were measured and recorded every day. Results: The solution of L.delbrueckii bacteria isolated from cream germinated 100% of the seeds, which is 4% higher than the control seeds, while the solution of L.gasseri bacteria isolated from Dandelion germinated 100%, supporting 4% higher than the control seeds. Seedlings irrigated with the L.delbrueckii bacterial solution exhibited an average length of 10.3cm, which was 1.3cm longer than the control (P=0.003), indicating a statistically significant difference. Similarly, those treated with the L.gasseri solution had an average length of 11.5cm, 2.5cm longer than the control (P=0.005), also demonstrating statistical significance. Conclusion The application of the lactic acid bacterial solution significantly enhanced both the germination of tomato seeds and the growth of the plants compared to the control solution.

Currently, around 20 doctors have received doctoral degrees and 100 doctors have received a master’s degree for research in sources directly related to the 5,000-year history of Mongolian medicine, including theory, philosophy, clinic, and medicine found in the past 30 years. In the future, the history of Mongolian medicine can go back from 5000 years to 6000 years. However, history requires facts, thus it is essential to seek and explore evidence in ancient medical scriptures written in Chinese, Tibetan, Manchu, and Mongolian languages, as well as archeological findings related to medicine.
One of the main areas of research in the history and sources of medical science is to examine the reality, nature, and stages of development of the main concepts of knowledge on fighting diseases, the contribution of doctors and scientists to it, and the importance of scriptures and treatises. Since ancient times, Mongolians have created methods to adapt to the transformation of natural phenomena, extreme climate changes, the characteristics of life, habits, and treatment of injuries and diseases caused by war, developing and creating an independent system of healthy living methods. This system was not only based on the knowledge of Mongolian dhom, Indian and Tibetan medicine, but it was also a complex of knowledge that absorbed the ancient scriptures of French and Russian medicine with the classical tradition of Western medicine as well as Manchu and Chinese medicine. Therefore, we believe that some of the traditional medicine methods in the 215 sutras should be registered as intangible cultural heritage.

Abstract: The basis of the development of traditional medicine in the XXI century is to study the old medical books and scriptures created by ancient Mongolian doctors and scientists of previous generations. For example, it is important to deepen the scientific understanding of “Man ngag rin chen ‘byung” written by Mongolian doctor ‘Jam dpal chos kyi bstan ‘dzin phrin las in Tibetan, and to understand the content and charms of the Man ngag rin chen ‘byung. Purpose: Sampling and analysis of experimental prescriptions in the “Man ngag rin chen ‘byung” written by Mongolian doctor ‘Jam dpal chos kyi bstan ‘dzin phrin las in Tibetan. Research methods: Methodologies of ancient textbook analysis and check list of textbook were used. Conclusion In the concluding remarks of the “Man ngag rin chen ‘byung” written by Mongolian doctor ‘Jam dpal chos kyi bstan ‘dzin phrin las, it was stated that there are many medicinal raw materials in the practice. He mentioned that: “I have summarized the benefits of medical literature written by the ancient doctors of Mongolian medicine to facilitate for people to learn.” An analysis of this sentence reveals that in the current understanding of medical science, it is evidence-based practice (EBP).

Background: The intestinal microbiota of Mongolians and its composition is of great interest of researchers, a few studies have did in this fields. Maybe Mongolian encompass a uniquely wide range of environmental conditions, ethno geographical cohorts and traditional nomadic lifestyles. Goal: We aimed to determine the amount of gut microbiota, including Lactobacillus and Bifidobacterium in the fecal samples of relative healthy Mongolian adults residing in various regions of Mongolia by conventional culture method and PCR. Material and Methods: The study was performed population based cross sectional study in healthy volunteers. In this study, 256 relative healthy Mongolian adults with no history of gastrointestinal associated diseases were enrolled between July 2018 and April 2019. Each participants was asked to complete a questionnaire containing 164 questions about demographics, physical activity, dietary habits. Fecal samples were collected for Lactobacillus and Bifidobacterium analysis using culture method and determination of genus of Bifidobacterium sрp and Lactobacillus spp by PCR. ResultsParticipants had a mean age of 38.9±12.8 years. The mean values of Lactobacillus by culture method were 5.9±1.28 and 6.24±0.94 log10 CFU/ml (4.67х106 , 4.66х106 CFU/ml), respectively. The abundance of Lactobacillus had a positive correlation with grams for fiber and amount of bifidobacterium ((r= 0.495, р<0.001, r=0.288, p<0.05), respectively). Significant difference were observed between groups of milk frequency per day for amounts of lactobacillus. In adult intestinal tracts, B.Bifidum was the most common taxon 31 (29%) followed by B. angulatum 14 (13.1%), B. adolescentis 10 (9.3%), B. catenulatum group 10 (9.3%), B. longum 9 (8.4%). B. lactis, B. breve, B. dentium and B. gallicum were subdominant species. Conclusion: The mean amount of Bifidobacterium and Lactobacillus of all participants were 6.24±0.94 and 5.9±1.28 log10 CFU/ml (4.66*106 , 4.67*106 CFU/ml) respectively. The Lactobacillus abundance of healthy adults was higher in region of Khangai, East and West of Mongolian than other regions. The composition of lactobacillus altered with ageing. Significant correlations were found between fiber, fats, potato and amount of Lactobacillus. Keywords: Bifidobacterium, Colony forming unit, Gut microbiota, Lactobacillus

Aflatoxins are the secondary metabolites of the fungi namely, Aspergillus flavus and A. parasiticus. They can colonize and contaminate grain before harvest or during storage. There are about twenty related secondary forms of aflatoxins, and subtypes B₁, B₂, G₁, G₂. These aflatoxins frequently contaminate the foods and feeds (Yu J et al, 2000, Imanaka BT et al, 2007). Aflatoxin B1, the most toxic, is a potent hepatocarcinogenic and genotoxigenic metabolites that have been classified as group I carcinogens by International Agency of Research on Cancer (International Agency for Research on cancer, 1993). Aflatoxin M1 is found in milk of lactating cows that have consumed feeds contaminated with aflatoxin B₁. Aflatoxin M₁ was originally classified as a Group 2B human carcinogen in 1993, but subsequent evidences of its cytotoxic, genotoxic and carcinogenic effects led to a new categorization of aflaoxin M1 as Group I (International Agency for Research on cancer, 2002). Aflatoxins can affect a wide range of commodities, including crops, cereals, oilseeds, spices, tree nuts, milk, meat, and dried fruit (Wilson DM et al, 1994, Bao L et al, 2010). Mongolia has been imported foods about 60 percent of food demands including wheat, flour, rice, milk, dairy products, peanuts and maize. This situation is required to study aflatoxin contamination in food in Mongolia. Epidemiological studies have found that dietary exposure to aflatoxin and chronic infection with hepatitis B, C virus are three major risk factors for HCC (Viviani et al. 1997; Hall et al. 2003). HCC as a result of chronic aflatoxin exposure has been well documented, presenting most often in persons with chronic hepatitis B virus (HBV) infection (Wild and Gong, 2010). The risk of liver cancer in individuals exposed to chronic HBV infection and aflatoxin is up to 30 times greater than the risk in individuals exposed to aflatoxin (Groopman et al., 2008). According to the WHO, the national liver cancer incidence rates was 54.1 per 100.000 population, the prevalence of HBV and HCV infection in 11.8%, 15.6% were respectively (J.Abarsanaa, 2012). This situation is a serous public health problem in Mongolia. Thus, we aimed to carry out the monitoring surveillance survey on the aflatoxin contamination level in some food.

Glucose-6-phosphatase dehydrogenase (G6PD) deficiency is the most common enzyme deficiency in humans, affecting 400 million people worldwide and a high prevalence in persons of African, Middle Asian countries. The most common clinical manifestations are neonatal jaundice and acute hemolytic anemia, which is caused by the impairment of erythrocyte’s ability to remove harmful oxidative stress triggered by exogenous agents such as drugs, infection, or fava bean ingestion. Neonatal hyperbilirubinemia caused by glucose-6-phosphate dehydrogenase (G6PD) is strongly associated with mortality and long-term neurodevelopmental impairment. Aim:To determine a level of glucose-6-phosphate dehydrogenase in healthy neonates.The 76.5% of all participants (n=205) was assessed 4.36±1.15 Ug/Hb in normal reference range of G6PD other 23.5% (n=63) was 0.96±0.51 Ug/Hb with G6PD deficiency. In the both sex, 51.5% of male 0.88±0.46Ug/Hb (n=33) and 47.6%of female (n=30) 0.97±0.55Ug/Hb was assessed with G6PDdeficiency. Developing Jaundice period in number of 63 neonates with G6PD deficiency, 85.7% of neonates (n=54)was in 24-72 hours, 4% of neonates (n=3) was in 5-7 days and there is no sign of jaundice in 9% (n=6).Therefore neonates with G6PD deficiency, 53.9% (n=34)contiuned jaundice more than two weeks.G6PD deficiency was determined in male neonates (51.5%) more than female(47.6%). The 76.5% of all participants (n=205) was assessed 4.36±1.15 Ug/Hb in normal reference range of G6PD other 23.5% (n=63) of all participants was 0.96±0.51 Ug/Hb with G6PD deficiency. It shows that G6PD might be one potential risk of neonatal jaundice and hyperbilirubinemia in neonates in Mongolia.

BACKGROUNDPhysical, mental and gross motor development occur intensively during the childhood. Therefore it is important to detect any developmental delays early in order to take proper intervention which is significant for mental ability and personal development of a child. In this study, we aimed to evaluate mental and gross motor development of the kindergarten’s children in Bayanzurkh and Khan-Uul district.METHODSWe selected 157 children, aged from 3 to 6 years, from Bayanzurh district’s kindergarten and 125 children from Khan-Uul district’s kindergarten randomly. Population basedcross sectional study design was used. Mental and gross motor development was measured by Denver-II test. Statistical analysis of the collected data was conducted using SPSS 17.0 software program.RESULTSLanguage development delay, fine motor-adaptive development delay, gross motor development delay and personal-social development delay were observed in 42%, 15%, 12%, 8% of the kindergarten children, respectively.CONCLUSIONSWe conclude that it is imperative to pay more attention to mental, language and gross motor developments of children in kindergarten.