1.Current situation and future trend of antimicrobial drugs consumtion
Mongolian Medical Sciences 2012;162(4):118-124
IntroductionAvailability of antimicrobials for customers without prescription is anticipated as one of the factors to accelerate the emergence of drug-resistant pathogens. In countries under economic development, an improvement of socioeconomic status of the population improves consumption of medicines.ObjectiveThe objective of this study was to examine if there are socio-demographic gradients associated with purchasing antimicrobials without prescriptions at retail stores in Ulaanbaatar, Mongolia.Methods and MaterialsA survey was conducted in among medical doctors and the randomly selected 250 pharmacy stores in Ulaanbaatar city and provinces (aimags). Customers who left from the stores were interviewed outside of the pharmacy and the medicines they bought at the stores were examined. The use of prescriptions and advice in purchasing medicines, instructions given at pharmacy stores, were interviewed and the type of medicines and details of antimicrobials purchased were examined by pharmacists.ResultsWe found that, quite common consumption of antimicrobials drugs specially betta-lactamas antibiotics and were sold without prescription. There are several reason to purchase antibiotics without prescription were several brand name of drugs, takes a lot of time.ConclusionThe purchase of antimicrobials without prescriptions was common across socio-demographic strata in Ulaanbaatar. By considering the increase of retail pharmacies and followed sales of antimicrobials according to the economic development, measures to enforce regulations and promote education to general public and professionals are urgently required.
2. Intraperitoneal acute toxicity study of Tetima herbal compound extract, in experimental animals
Anar E ; Yeruult CH ; Batkhuyag P ; Khaliun N ; Narantungalag D ; Tuvshinjargal TS
Innovation 2015;9(4):42-45
The Mongolian plants considered to possess medicinal properties may contain novel compounds since they are exposed to severe conditions; such plants could become good candidates for modern drug discovery programs. Daurian Thermopsis (Thermopsis lanceolata R.Br.= Th.dahurica Czefr.), Gobian Thyme (Thymus gobicus Tschern.) and Mogilev Mallow (Malva mohileviensis Downer) are separately used as mucolytic and anti-inflammatory treatment in non-conventional medicine. Therefore, weprepared extract of these herbals compound called as a Tetima and to evaluate it’s acute toxicity. It isimportant to produce mucolytic effective new pharmaceutical preparation used for upper and lowerrespiratory tract inflammatory disease.Tetima herbal compound extract was prepared in ethanol, the ratio of herbals to ethanol was 1:10. Healthy 25 white albino mice (male weighing between 17-30 gram) used in this study. They were kept in large airy cages in groups of 5 animals per cage with free access to food and water. Five doses (8-20 g/kg) were then chosen for the determination of intraperitoneal LD50 in mice and given to five groups of albino mice. The animals were observed for first 2 hours and then at 6th and 24th hour for any toxicsymptoms. After 24 hours, the number of deceased mice was counted in each group. The percentage of animals that died at each dose level was transformed and then LD50 determined by the methods of Karber and Pershin.G.N.The LD50 of Tetima herbal compound in mice was determined to be 14.3 g/kg after intraperitonealinjection. There was no difference occurred between Karber and Pershin methods to evaluate acute toxicity. In the animals receiving intraperitoneal injection, the abdominal muscle contractions and ataxia was observed, which persisted for few hours. At the 6th hour they were drowsy and less responsive. The severity of these effects was related to the level of dose. However, at 24th hour most of the survivors had recovered from these symptoms.Tetima herbal compound extract is a relatively safe, particularly when given intraperitoneal inject toexperimental animals.
3.Item analysis of the basic clinical skills assessment
Otgonbayar D ; Khaliun B ; Zol B ; Enkhzul T ; Baasanjav N
Mongolian Medical Sciences 2018;185(3):80-82
Introduction:
The clinical skills training at medical schools provides the opportunity for future medical doctors to
deal with the client with proper care, diagnosis of the disease, first aid, treatment, nursing, treatment,
counseling to address the complexity of the problem solving and the ethical attitude of the doctor.
To achieve this objective, it is necessary to assess the level of knowledge, skills and attitudes students
have acquired.
Goal:
To analyze assignment of basic clinical skills assessment and to identify the level of кknowledge and skills
students who have graduated second year medical program at “Ach” Medical University during 2016-
2017 academic year.
Materials and Methods:
The study was used as a descriptive model to measure the reliability of the assignment, the difficulty
factor of tasks, and the Hoffsten’s scores based on the tasks and performance of each station and
compared with the indicators.
Results:
Based on Hoffsten’s study on the success rate of examiners at the 5 stations, the Hoffsten’s score
level of clinical examination was 68 percent, the physical examination station was 64 percent, the
station’s diagnostic level was 71 percent, the laboratory was 70 percent and the nursing station was
70 percent.
Conclusion
At each clinical trial, the differential diagnosis of each individual clinical trial, clinical interview, nursing
station and visual diagnostic station (DF> 95), at the laboratory and at the physical examination
station, assess the student with a higher grade of difficulty factor (DF> 80) to the Hoffsten’s score of
the basic clinical skills exam is set to be 70 percent.
4.Item analysis on graduate exam performance
Otgonbayar D ; Soninbayar J ; Zol B ; Khaliun B ; Enkhzul T ; Baasanjav N
Mongolian Medical Sciences 2018;185(3):65-74
Introduction:
One of the quality assurance measurements for medical schools is the achievement of students who have graduated in the assessment of the knowledge, skills and attitudes they are trained in.
Goal:
To analyze assignment of theoretical and practical exam and to identify the level of кknowledge students who have graduate at “Ach” Medical University during 2015-2016 academic year.
Materials and Methods:
The study was conducted on a cross sectional and descriptive study through the based on the task of analyzing the 261 graduate students theoretical and practical exam performance of the bachelor degree in Medicine, Dentistry, Traditional Medicine and Nursing of Ach Medical University of Mongolia /AMU/ and was assessed and to identify a reliability coefficient, difficulty factor, discrimination index, Hoffsten’s score.
Results:
The reliabiliy coefficient of graduate exam meets requirement when it’s 0.94-0.96. According to the analysis of the 300 test of the each classroom of graduates was 70 percent (n=202) with weak dicrimination index, difficallty factor was more than 50 percent too easy, The Hoffsten’s score to which exam was passed of Medical graduates is 70 percent, traditional medicine is 87 percent, dentistry is 79 percent, the nursing is a Hoffsten’s score was 80 percent.
Conclusions
The reliability coefficient the theoretical exam of the graduates’ knowledge is convenient for all occupations, and whole field examines the weak difficulty index (DI≤0) for all field examinations. The Hoffsten’s score is 70% above the medical field. Graduate assignments can not discriminate graduates’ knowledge and skills levels and the difficulty factor graduate examination was very easy.
5.Student’s satisfaction level in curriculum implementation
Otgonbayar D ; Soninbayar J ; Zol B ; Khaliun B ; Lkhamdulam B ; Dashtseren B ; Batjargal B ; Enkhzul T ; Baasanjav N
Mongolian Medical Sciences 2018;185(3):83-87
Introduction:
The curriculum development is important issue, especially sudent’s evaluations for the implementation
of the curriculum. Accordingly this time we conducted this survey to determine the level of satisfaction
of students, which is a key factor in implementation of curriculum at the “Ach” Medical University.
Goal:
To determine student’s satisfaction level in the curriculum implementation of “Ach” Medical University
Materials and Methods:
Study was conducted descriptive study design using quantitative research methodology. The Likert
scale (1-5) used for the assessment of satisfaction score. Total 1105 students were included in the
study. Study questionnaire included 2 groups with 17questionnaires.
Results:
Students’ satisfaction level is 3.22 point on average and students gave lowest points 2.77 on the
quality of classroom, school environment, training equipment and books and course materials.
Conclusions
The average satisfaction score was 3.22 above the average but the some factors including classroom
capacity, study environment, training equipment and books and course materials, textbooks were
below average.
6.A new diagnostic biomarker in early detection of Hepatocellular Carcinoma
Batchimeg B ; Baljinnyam T ; Khulan U ; Khaliun M ; Bilguun E ; Munkhtsetseg B ; Terguunbileg B ; Chinzorig M ; Gan-Erdene B ; Bilegtsaikhan Ts ; Erkhembulgan P ; Batbold B ; Munkhbat B ; Munkhtuvshin N ; Munkhbayar S
Mongolian Medical Sciences 2021;197(3):10-16
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.
7.Involvement of Vitamin D in Immune system
Baljinnyam T ; Batchimeg B ; Zolzaya D ; Ganchimeg D ; Lkhaasuren N ; Oyungerel G ; Munkhtsetseg B ; Khaliun M ; Khulan U ; Bilguun E ; Batkhishig M ; Tulgaa L ; Bilegtsaikhan Ts ; Munkhbayar S ; Munkhtuvshin N ; Munkhbat B
Mongolian Medical Sciences 2020;192(2):51-59
Research of function of vitamin D on immune system has been studying since the study revealed
that vitamin D receptor is expressed on the surface of the immune cells. 1,2-dihydroxyvitamin
D3 [1,25(OH)2D], physiologically active form, can be generated through hydroxylation of
25-hydroxyvitamin D3 [25(OH)D], inactive form of vitamin D, in a liver, connecting with specific VDR
make biological action. Vitamin D make different biological actions depends on connecting with
different immunological cells. Some studies indicated that Vitamin D plays pivotal role in antibacterial
innate immune responses through regulating reaction of the main cells as macrophages and dendritic
cells. Moreover, calcitriol, the active form of vitamin D, is connected with VDRE, modulates the innate
immune response through directly inducing expression of catelicithin and β-defensin as antimicrobial
peptides, reducing secretion of IL-1b, IL-6, TNF-a, RANKL, COX-2 as proinflammatory cytokines and
increasing production of IL-10, an anti-inflammatory cytokine. Vitamin D plays in proliferation and
differentiation of T and B cells and regulates the activities of over 500 genes. Vitamin D differently
impacts on per se stages of T cells’ proliferation. Vitamin D indirectly mitigates the differentiation from
immature B cells to plasma B cells while it directly impacts on regulation of overloaded production of
antibodies in plasma B cells. In conclusion, vitamin D modulates the innate- and adaptive immune
response through regulation on activation of APCells, proliferation and differentiation of immune cells,
secretion of some antibacterial peptides.
8.The effects of Particulate matter (PМ2.5) pollutants on cancer cells in in vitro model
Baljinnyam T ; Bilguun E ; Batchimeg B ; Zolzaya D ; Lkhaasuren N ; Oyungerel G ; Munkhtsetseg B ; Khaliun M ; Khulan U ; Batkhishig M ; Uranbileg U ; Sonomdagva Ch ; Bilegtsaikhan Ts ; Munkhbayar S ; Munkhtuvshin N ; Erkhembulgan P
Mongolian Medical Sciences 2021;197(3):17-25
Introduction:
Air pollution has become one of the major problems in socio-economic and health
issues in Mongolia. Among the various hazards of particulate matter (PM) pollutants, microorganisms
in PM2.5 and PM10 are thought to be responsible for various allergies and for the spread of respiratory
diseases. Recent studies have shown that PM2.5 particles can cause chronic heart failure, heart
arrhythmias, and strokes, as well as lung damage, cirrhosis, inflammation, cancer, cardiovascular
disease, and metabolic disorders. Furthermore, some studies have concluded that PM2.5 particles
in the environment are a risk factor for gastrointestinal, liver, colon, and lung cancer as well as it
affects the growth and metastasis of various cancer cells caused by other factors. In our country, the
health effects of air pollution and the relationship between the pathogenesis of cancer research are
scarce. Therefore, the study of the effects of PM2.5 particles on cancer cell proliferation, migration
(metastasis) can provide a significant role for cancer treatment, diagnosis, and prevention.
Purpose:
Determining the effects of PM2.5 particles on cancer cell proliferation, migration (metastasis)
in in-vitro
Material and Methods:
A human liver cancer cell line (HepG2), human gastric cancer cell line (AGS)
were obtained from the central scientific research laboratory in the Institute of medical sciences.
HepG2, AGS cells were seeded at a concentration of 1*105 cells/mL in a culture flask and cultured
in RPMI-1640 medium supplemented with 10% FBS, 1% antibiotic mix (penicillin, streptomycin) in a
humidified atmosphere of 5% CO2 at 37 °C. The cytotoxic effect of PM 2.5 in AGS, HepG2 cells were
evaluated by MTT, CCK8 assays. AGS, HepG2 cells were incubated in 96 well plates for 24h then
treated with different concentrations (0, 5, 10, 25, 50 and 100 μg ) of Bayankhoshuu, Buhiin urguu,
and Zaisan samples for 24h, respectively.
Results:
Concentrations of 10, 25, and 50 μg/ml of samples collected from the Bukhiin urguu and
Zaisan in March increased HepG2 cell growth, while doses of 25, 50 μg/ml of samples collected from
Bayankhoshuu in March and December increased HepG2 cell growth. Therefore, concentrations of
25 and 50 μg/ml of samples collected from Bayankhoshuu in March increased AGS cell growth, while concentrations of 25, 100 and μg/ml of samples collected in December increased AGS cell growth.
However, no cytotoxic effect was observed in the sample collected from Zaisan in March, whereas
the PM2.5 sample enhanced AGS cell growth in dose dependent manner in December.(p <0.05)
Conclusion
High levels of heavy metals were detected in samples collected in December from
Bayankhoshuu, Bukhiin urguu and Zaisan of Ulaanbaatar. Concentration of 25 μg/ml of samples
collected from the Bukhiin urguu and Zaisan in March increased HepG2 cell growth. Concentrations
of 25 μg/ml of PM2.5 collected from three regions around Ulaanbaatar increased HepG2 and AGS
cell migration.