Introduction: Hepatocellular carcinoma(HCC) is the 6th most common cancer inthe world, but the first most commoncause of cancer death in Mongolia. Thereis no universally accepted consensuspractice guidelines for HCC owing to rapiddevelopments in new treatment modalities,the heterogeneous epidemiology and clinicalpresentation of HCC worldwide.Methods and Materials: This study wasconducted in the department of generalsurgery of Second Central Hospital ofMongolia between 2015 and 2016 on a totalof 36 patients with hepatocellular carcinoma.Results: The average of operationtime is a 132.2 min, the hospital stay 18.2days. Postoperative bleeding was 2.7% (1),encephalopathy 5.4% (2), wound infection5.4% (2), and incisional hernia 8.1% (3).There were not bile leak during 30 dayspostoperative day.Conclusion: Postoperative complicationis a comparable to different researcher.There were no death within first month.

Background: In recent years, the incidence of liver diseases due to complications of non-alcoholic fatty liver disease (NAFLD) has shown a significant upward trend in Southeast Asian countries. NAFLD is a hepatic disorder characterized by lipid accumulation in the microstructure of the liver in individuals who consume little to no alcohol. It is often associated with insulin resistance and is diagnosed when steatosis affects more than 5% of hepatocytes histologically, or when the fat signal intensity on MRI exceeds 5.6%, based on fat-to-water ratio measurements. In Mongolia, histological studies using frozen liver sections with routine and special staining techniques are limited, highlighting the necessity of this study. Aim: To determine and compare the degree of steatosis and fibrosis in frozen liver tissue samples of patients with NAFLD through histological analysis. Materials and Methods: This study was conducted at the the Department of Anatomy, School of Biomedicine and Bio medical Research Institute of MNUMS in collaboration with the Second State Central Hospital. Ethical approval was obtained from the Research Ethics Committee of MNUMS (Protocol No. 2024/3-06). All procedures adhered strictly to laboratory biosafety protocols. Participants were selected among patients undergoing elective laparoscopic cholecystectomy, from whom informed consent was obtained. Based on inclusion criteria, five participants were grouped as follows: healthy control (n=1), NAFLD without fibrosis (n=2), and NAFLD with fibrosis (n=2). Liver biopsies (approx. 1 cm in size) were obtained intraoperatively, immediately deep-frozen in liquid nitrogen, and prepared for histological evaluation. Results: In patients with NAFLD compared to the healthy liver group, disruption of hepatocyte columnar architecture and mild periportal lymphocytic infiltration were observed. Oil Red O staining revealed 34–66% micro- and macrovesicular steatosis, corresponding to grade 2 steatosis. Masson’s trichrome staining showed no fibrotic changes in perivenular or periportal areas (Ishak grade 0/4) at this stage. However, upon progression to grade 3 steatosis, early-stage fibrosis was observed in both perivenular and periportal regions (Ishak grade 1/4). Further progression to stage 4 fibrosis was characterized by the development of connective tissue septa, although no significant changes in droplet size were observed. Conclusions 1. Increasing stages of fibrosis are not directly influenced by the severity of hepatic steatosis in NAFLD. 2. Although the degree of steatosis increases, the absence of corresponding fibrotic changes in early stages indicates a complex progression pattern of NAFLD requiring further investigation.

Background: Rhododendron adamsii (Sagaan Dalya) is a medical plant widely distributed in the Altai region, Mongolia, and Russia. It is traditionally used for its calming, restorative, and immune-boosting properties. Inflammation is a complex immune response against pathogens such as bacteria, viruses, and fungi, involving macrophages, fibroblasts, mast cells, and neutrophils. These cells release inflammatory mediators such as nitric oxide (NO), TNF-α, and IL-1β. In collaboration with the Russian Foundation for Basic Research, a project was initiated to investigate the bioactive fractions of Rh. rosea (L.) and Rh. adamsii and their effects on the production of TLR4 signaling end products and associated protein activation. Previous studies within this project have shown that certain bioactive fractions exhibit anti-inflammatory activity. Specifically, fraction 7.11 suppressed NO production and inflammatory signaling molecules in LPS-stimulated RAW 264.7 macrophages, while fractions 7.46 and 7.52 influenced the phosphorylation of proteins such as ERK1/2, JNK, and IRF3. These findings suggest the need for further investigation into the effects of Rh. adamsii bioactive fractions on inflammatory signaling pathways. Aim: This study aims to evaluate the effects of bioactive fractions derived from Rhododendron adamsii on the production of TLR4 signaling end products in RAW264.7 macrophage cell cultures. Materials and Methods: The study was conducted using RAW264.7 macrophage cell cultures and bioactive fractions extracted from Rh. adamsii, dividing the experiments into three groups. After stabilization, RAW264.7 cells were stimulated with 100 ng/mL LPS. Based on previous studies, non-toxic concentrations of bioactive fractions (10 µg/mL) were applied. NO production was measured using the Griess assay, while TNF-α and IFN-β cytokine levels were evaluated using ELISA. Each experiment were repeated three times, and data were statistically analyzed using SPSS 25.0, applying One-way ANOVA and Independent Samples T-test. Results: The NO production in the positive control group was significantly higher compared to the negative control. In contrast, the experimental groups showed a statistically significant reduction in NO production, suggesting a potential inhibitory effect on TLR4 signaling in macrophages. However, fraction 7.48 reduced TNF-α levels while increasing IFN-β production, but these changes were not statistically significant. Similarly, fraction 7.55 slightly reduced TNF-α and IFN-β levels, but the effect was also statistically unsignificant. Conclusion The bioactive fractions 7.48 and 7.55 of Rh. Adamsii reduced nitric oxide (NO) production in LPS-stimulated macrophage cell line cultures, suggesting that they may inhibit TLR4 signaling. However, their lack of effect on TNF-α and IFN-β production indicates that they do not influence TLR4 signaling mediated by these cytokines. Instead, they may affect the final product output through other pathways or different stages of signal transduction.