1.The study of apolipoprotein a5 gene polymorphisms in relation tolipidslevel in people with metabolic syndrome
Ariunbold Ch ; Buyankhuu T ; Munkhtsetseg J
Mongolian Medical Sciences 2014;170(4):10-13
Background: Epidemiologic studies have shown a higher prevalenceof hypertriglyceridemia among
patients with CHDthan among unaffected populations. Dozens of polymorphisms in different genesthat
could have some effect on plasma TG levels havebeen analyzed.
The most promising results are connected withvariants within the apolipoproteins (APO) APOA1/APOC3/
APOA4 gene cluster. Transgenic mice overexpressing human apolipoprotein A5decreased plasma
triglyceride concentrations to one-third of those in control mice; conversely, knockout mice lacking
APOA5 had four times as much plasma triglycerides as controls.The human APOA5 gene consistsof
4 exons and codes 369 aminoacidprotein, which is expressed almost exclusively in the liver.A minor
allele of APOA5 (1259C, IVS3+476A and 1131C) which was independently associated with high plasma
triglyceride levels in African-American, non Hispanic whites, Hispanic, Caucasians and Japanese were
reported. Four polymorphisms in ApoA5 (1259T>C, IVS3+476G>A, S19W and 1131T>C) has been
correlatedwith high TG levels in diabetic women.
Materials and Methods: 162 people with MS for case group and 144 people for control group were
selected in this study. MS was diagnosed according to IDF criteria and serum triglyceride, total cholesterol
and HDL levels were determined. DNA from both case and control subjects were extracted from blood
samples (20μL) using “G-spin™ Total DNA Extraction Kit”(iNtRON Biotechnology, Inc).The genotypes
for fourpolymorphisms of ApoA5 were determined using a combination of PCR and sequence-specific
oligonucleotide probes.
Results: There were 304 total subjects included males 50.3% (153) and female 49.7% (151) in our study.
The appearance of risk genotypes of 1177C>T, 1259T>C, IVS3+476G>A and 1131T>C polymorphisms
in ApoA5 gene were higher in MS group than control group.Serum levels of triglycerides and total
cholesterol differed significantly (p<0.001, p=0.029) among APOA5-1131T>C genotypes.
Conclusion: TAG and TC level was higher in people with 1131T>C-CC genotype than other genotypes
in both groups (p=0.010, p=0.001). We determined that the odds ratio for the hypertriglyceridemia was
5.98 for ApoA5-1131T>C CC-genotype carriers.
2.The study of apolipoprotein A5 gene polymorphism in relation to serum triglyceride level in people with metabolic syndrome
Ariunbold Ch ; Khajidaa B ; Buyankhuu T ; Azzaya E ; Munkhtsetseg J
Mongolian Medical Sciences 2014;169(3):4-7
Background. A large number of longitudinal studies indicate significantly increased risk of cardiovascular
events and death in people with the MetSyn and high plasma levels of triglycerides are an independent
risk factor for the development of cardiovascular disease. Apolipoprotein A5 (APOA5) gene, a new
member of the APOA1/C3/A4 gene cluster, was identified by comparative sequencing of human and
mice DNA by Pennacchio and co-workers in 2001. Since this discovery, variants of ApoA5 gene have
been independently assiociated with level of plasma triglyceride in many countries. Human ApoA5 is
expressed in the liver then appears in plasma in association with VLDL and HDL and plays a major role
in TG catabolism. Variant at ApoA5 gene locus, 1177C>T is located in 3’ UTR which often contains
regulatory regions that influence post-transcriptional gene expression. One alteration can be responsible
for the altered expression of many genes.
Materials and Methods. 152 people with MS for case group and 152 people for control group were selected
in this study. MS was diagnosed according to IDF criteria and serum triglyceride levels were determined.
DNA from both case and control subjects were extracted from blood samples (200 ml) using “G-spin™ Total
DNA Extraction Kit”(iNtRON Biotechnology, Inc). To detect the 1177C>T variation of ApoA5 gene, using
High Pure PCR Template Preparation Kits, a forward primer 5’-CTCTGAGCCTCTAGCATGGTTGAGT-
3’ and the mismatch reverse primer 5’-GAGCATTCCCAAATGAGCAC-3’ were used to create the HinfI
restriction site.
Results. There were 304 total subjects included males 50.3% (153) and female 49.7% (151) in our
study. Incident of CC genotype was 71.1% (216), CT genotype was 25% (76) and TT genotype was
3.9%, TAG level was higher in males than females in both groups (p=0.016, ð=0.001) for CC genotype
and also, higher with MS in males for CT genotype (p=). But, TAG level was no significant difference
among three genotypes in group with MS subjects (male p=0.236, female p=0.881).
Conclusion: The TT genotype of the ApoA5 gene 1177C>T polymorphism frequency was 2.9% in control
subjects and 4.9% in subjects with MS. However, TG level was not differ in both groups for TT genotype,
TAG level in males was higher compared with females (p=0.016 in control, p=0.001 in group with MS).
3.Serum leptin level in Mongolian people with metabolic syndromee
Batnaran D ; Ariunbold CH ; Munkhtsetseg J
Mongolian Medical Sciences 2016;177(3):5-9
BackgroundLeptin is a mediator of long-term regulation of energy balance, suppressing food intake and therebyinducing weight loss.GoalThe main goal of our study was the analyzing of serum leptin level in correlation with some influencingfactors in adults with metabolic syndrome.Materials and MethodsWe included 260 randomly selected people aged 18-72 years old; among them 105 had metabolicsyndrome which was identified by the criteria of the International Diabetes Federation. All participantsunderwent general medical examinations and signed a written consent paper. Fasting blood glucose,triglyceride, HDL-C, insulin, adiponectin, leptin level were measured in fasting blood serum and insulinresistance was calculated as a HOMA-IR model.ResultsAverage level of leptin for participants with MS was 16.44±14.21ng/ml, in participants without MS was9.59±12.69ng/ml. MS exposed group had much higher level of leptin than the control group (p<0.001).Leptin level was correlated with waist circumference (β=-0.253±0.1; p=0.013), and body mass index(β=1.778±0.274; p<0.001).ConclusionLeptin level in the MS exposed group were higher than in the control group. The level of leptin had aconsistent and significant correlation with body mass index and waist circumference in compare to otherinfluencing factors.
4.11377C>G polymorphism of adipoq gene is associated with plasma tag level in people with metabolic syndrome
Orgil S ; Ariunbold CH ; Batnaran D ; Munkhtsetseg J
Mongolian Medical Sciences 2015;172(2):14-17
Introduction. The metabolic syndrome is related to increased risk of developing cardiovascular disease andtype 2 diabetes. Adiponectin is an adipose tissue-specific collagen-like factor, which is abundant in plasma, anda decrease of adiponectin is associated with obesity and type-2 diabetes.Goal. This study aimed to determine the ADIPOQ gene -11377 polymorphism in association with plasmaadiponectin level and risk factors of metabolic syndrome.Materials and Methods. We investigated adiponectin gene -11377C>G polymorphism in 156 subjects withmetabolic syndrome and 142 healthy control subjects. The -11377C>G polymorphic locus was amplified using theforward primer 5’-ACTTGCCCTGCCTCTGTCTG-3’ and the reverse primer, 5-CCTGGAGAACTGGAAGCTG-3’.A p value <0.05 was considered statistically significant.Results. Adiponectin level positively correlated with age, but correlated negatively with TG, waist circumference,waist hip ratio, diastolic blood pressure, weight and BMI (p < 0.05). With genotype CG and GG (6.57±3.09ng/ml) of -11377C>G had lower levels of serum adiponectin than those with the genotype CC (7.38±3.68ng/ml) butno significant difference in people with MS (p=0.157). Therefore with genotype CG and GG (168.56±113.31mg/dl) of -11377C>G had higher levels of serum triglycerides than those with the genotype CC (132.94±74.78mg/dl) significant difference in people with MS (OR=1.006, p=0.015). With CG and GG (75.04±12.49mg/dl) of-11377C>G had significantly higher glucose level compared to with the genotype CC (68.85±11.76mg/dl) inwithout MS (OR=1.071, p=0.017).Сonclusions.1. ADIPOQ gene -11377>G polymorphism of the adiponectin gene was found not to be related to adiponectinlevel (p=0.157).2. -11377C>G polymorphism was related to the metabolic syndrome susceptibility, and this polymorphismimpacted on circulating triglyceride and glucose concentrations.
5.The study of PGC-1α gene Gly482Ser polymorphism in people with metabolic syndrome in relation to risk factors of MS
Purevjal S ; Batnaran D ; Ariunbold CH ; Munkhtsetseg J
Mongolian Medical Sciences 2015;172(2):18-21
Introduction: The metabolic syndrome (MS) is characterized by central obesity, hypertriglyceridemia,low high-density lipoprotein (HDL), increase blood pressure and raise fasting plasma glucose. ThePGC-1α gene is located on chromosome 4 p.15.1 in humans and encodes a protein containing 798amino acids. The protein encoded by this gene is a transcriptional coactivator that regulates thegenes involved in energy metabolism. PPARγ, a coactivator molecule recently identified based on itsability to interact with PPARγ, is involved in many important metabolic processes, including adaptivethermogenesis, mitochondrial biogenesis and fatty acid β–oxidation.Goal: To study the frequency of PGC-1α Gly482Ser polymorphism in people with MS in relation to therisk factors of the MS.Materials and methods: The study population comprised 302 unrelated Mongolian subjects (158 withmetabolic syndrome and 144 controls). The genotypes for polymorphism of candidate gene related toMS were determined using a RFLP analysis of the MspI digest of the PCR product.Result: From the control group, 33.4% (48) had GG, 47.2% (68) had GS and 19.4% (28) had SSgenotypes. 51.9% (82) of people with MS had GG, 35.4% (56) had GS and 12.7% (20) had SSgenotypes. The prevalence of G allele in people with MS was 69.6%, which is much higher than healthygroup. Comparing PGC-1α Gly482Ser GG, GS and SS genotypes with systolic arterial blood pressurerevealed statistically significant difference which was higher among subjects with GG genotype. Theblood pressure of people with MS and carrying GG genotype of PGC-1α Gly482Ser polymorphismwas significantly increased 2.35 times than people without MS.Conclusions:1. 69.6 percentages of the people with MS had G allele and 2.2 times more than those withoutmetabolic syndrome.2. We determined that the odds ratio for the high blood pressure and it was 2.35 times higher inpeople with GG allele of Gly482Ser carriers than GS and SS alleles carriers (OR = 2.35, p =0.012).
6.Use of beta 2 microglobulin as a kidney function marker
Narantuguldur D ; Khulan P ; Taikhar B ; Naranmandakh G ; Ariunbold J
Health Laboratory 2020;12(2):23-27
Purpose:
Kidney function assessment method is improving gradually. New biomarkers are studied and started using in clinical practice, such as beta 2 microglobulin. Beta 2 microglobulin is improving diagnostic and prognosis in CKD patients. We aimed to assess convenience usage of B2MG alone and B2MG based eGFR in Mongolian patients.
Materials and method:
We included 116 patients diagnosed with CKD and 55 donors whom with normal kidney function.
We collected participant's blood sample by venipuncture in plain vacutainer. Creatinine, urea, cystatin C, B2MG were tested by Roche Cobas C311 equipment in serum. eGFR was calculated by online calculation from NKF. B2MG based eGFR was calculated by eGFR=133*B2M-0.852
Result:
Assessment of kidney biomarkers and eGFR was significantly correlated in both groups. Measured serum creatinine was 3.37 mg/dl in CKD patients and 0.87 mg/dl in donors. Serum urea was 97.6 mg/dl, 31.1 mg/dl, cystatin C 3.05 mg/L, 1.49mg/L and beta 2 microglobulin 10.65 mg/L, 2.43 mg/L respectively. Estimated GFR was 21.5-28.4 ml/min/1.73m2 in CKD patients and 47.7-103.9 ml/min/1.73m2 in donors.
Assessing kidney function by biomarkers (r=0.720-0.918, p<0.05), and eGFR (r=0.495-0.996, p<0.05) were significantly correlated in both groups.
Conclusion
B2MG can be used in clinical practice in Mongolia. B2MG is optional with creatinine, urea, cystatin C for assessing and improving kidney function.
7.Risk assessment for preeclampsia by biochemical and biophisycal markers at first trimester
Urjindelger Ts ; Ariunbold Ch ; Munkhtsetseg J ; Erkhembaatar T
Mongolian Medical Sciences 2017;181(3):30-38
Introduction:
Preeclampsia, which affects about 2-8% of pregnancies, is major cause of maternal and perinatal
morbidity and mortality, particularly in developing countries. In Mongolia, preeclampsia and eclampsia
occurred among pregnancy complications about 25% in recent years. There is a percentage for a
cause of maternal death was 17.7% in preeclampsia and eclampsia between 2012 and 2015 in
Mongolia.
Effective prediction of preeclampsia can be achieved at 11-13 week’s gestation by combination
of maternal characteristics, mean arterial pressure (MAP), uterine artery pulsatility index (UtA
PI), maternal serum placental growth factor (PlGF), and pregnancy-associated plasma protein-A
(PAPP-A).
Goal:
To investigate plasma concentration of PIGF and PAPP-A, in pregnant women at 11-13+6 of
gestation for screening of preeclampsia, To examine the performance of first-trimester screening for
preeclampsia based on maternal characteristics, MAP, and mUt.A-PI.
Materials and Methods :
The study conducted among 393 single pregnant women at 11-13+6 weeks, who were visiting
antenatal care services, between March, 2015 and June, 2017. The prospective Cohort research
method was used for this study. Written informed consent was obtained from all participants.
Maternal plasma PAPP-A, PlGF were determined using Perkin Elmer kits by fluoroimmunoassay.
Measurement of MAP was by validated automated devices (HEM-7120, Оmron, Japan). MAP was
calculated from the formula DP + 1/3*(SP-DP), where DP represents diastolic blood pressure and
SP- systolic blood pressure. Trans-abdominal ultrasound (Voluson E8, GE, USA) examination was
carried out for Ut.A-PI.
Results:
In the study population, there were 66 (16.8%) cases that experienced preeclampsia and 327
(83.2%) cases that were unaffected by preeclampsia.
The result showed that the mean concentration of PlGF was 38.6±19.6 pg/ml in PE group whereas
the mean was 45.1±24.0 pg/ml in normal pregnant women. Level of PAPP-A was 366.1±195.3 mU/L
in group with PE, 633.6±496.9 mU/L in group without preeclampsia.
The best Youden’s index and area under the curve (AUC) for MAP and mUt.A-PI were as a
predictor of PE. It can be shown that the cutoff point for MAP was 89.5 mmHg (sensitivity-71.2%;
specificity-75.5% J-0.467; AUC-0.792; P<0.001). The cutoff point of mUt.A-PI was 2.34
(sensitivity-33.3%; specificity-77.7% J-0.12; AUC-0.577; P<0.001).
Conclusions
The concentration of PIGF and PAPP-A in pregnant women with preeclampsia at 11-13+6 of gestation
was lower than normal pregnant women. The detection risk of PE by MAP is more accurate than the
mUtA-PI measurement.