Minarma Siagian
Department of Physiology, Faculty of Medicine, Universitas Indonesia, Jakarta

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The impact of β-hCG on placental angiogenesis in pre-eclampsia Subakir, Sri B.; Jauhari, Tri; Iriana, Pramita; Siagian, Minarma; Setiadji, Sutarmo
Medical Journal of Indonesia Vol 14, No 2 (2005): April-June
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (157.131 KB) | DOI: 10.13181/mji.v14i2.175

Abstract

Numerous factors, such as VEGF and intra-placental oxygenation, can influence placental angiogenic activity. Early in the normal gestation period, β-hCG enhance VEGF activity to induce angiogenesis. The aims of this study were to identify the correlation between β-hCG concentration in placental culture and placental angiogenic activity in pre-eclampsia. Ten placenta samples from women with pre-eclampsia and l0 from controls (normal pregnancy) were collected. All subjects agreed to participate in this study and signed an informed consent form. β-hCG concentration in supernatant of placental culture was measured by Microparticle Enzyme Immunoassay (MEIA) and placental angiogenic activity was measured by endothelial cell migration toward placental explant (score 0-4). The results showed that the median score of placental angiogenic activity in pre-eclampsia was significantly higher than in normal pregnancy (p<0.05). Concentration of β-ahCG in pre-eclampsia was significantly higher than in normal pregnancy (p<0.001). hCG concentration in placental culture was positively correlated to placental angiogenic activity both in pre-eclampsia (r=+0.50) and in normal pregnancy (r=+0.57). Althouglt the correlations were weak, β-hCG is considered one of the factors that influence placental angiogenic activity. (Med J Indones 2005; 14: 67-70)Keyvords: angiogenesis, β-hCG, plocenta, pre-eclampsia
Hypertension in Indonesian air force pilots Siagian, Minarma
Medical Journal of Indonesia Vol 21, No 1 (2012): February
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.636 KB) | DOI: 10.13181/mji.v21i1.477

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Background: To investigate the association between aircraft noise and blood pressure.Methods: A nested case-control study was conducted on Indonesian Air Force pilots doing annual medical check-ups at the Saryanto Institute for Aviation and Aerospace Health (LAKESPRA) from 2003 – 2008. The data extracted from medical records were age, total flight hours, type of aircraft, fasting blood glucose and cholesterol levels, waist circumference, height and weight (Body Mass Index), and blood pressure.Results: There were 549 pilots, 49 were found to be hypertensive, with SBP ≥ 140 mmHg and/or DBP ≥ 90 mmHg. Helicopters pilots were at an almost 2 fold risk of hypertension compared to pilots of the fixed wing aircrafts. Pilots with more than 1400 hours of flight had more than 2 fold risk of being hypertensive compared to those with 1400 flight hours or less.Conclusion: The type of aircraft, which is related to the noise generated, may be a risk factor for developing hypertension in pilots. Increased total flight hours also increased the risk of hypertension. (Med J Indones 2012;21:38-43)Keywords: Aircraft noise, hypertension, pilots
Effect of enhanced external counterpulsation therapy on myeloperoxidase in lowering cardiovascular events of patients with chronic heart failure Rampengan, Starry H.; Setianto, Budhi; Posangi, Jimmy; Immanuel, Suzanna; Prihartono, Judo; Siagian, Minarma; Kalim, Harmani; Inneke, Sirowanto; Abdullah, Murdani; Waspadji, Sarwono
Medical Journal of Indonesia Vol 22, No 3 (2013): August
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (911.558 KB) | DOI: 10.13181/mji.v22i3.584

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Background: Chronic heart failure (CHF) is a slowly progressive disease with high morbidity and mortality; therefore, the management using pharmacological treatments frequently fails to improve outcome. Enhanced external counterpulsation (EECP), a non-invasive treatment, may serve as alternative treatment for heart failure. This study was aimed to evaluate the influence of EECP on myeloperoxidase (MPO) as inflammatory marker as well as cardiac events outcome.Methods: This was an open randomized controlled clinical trial on 66 CHF patients visiting several cardiovascular clinics in Manado between January-December 2012. The subjects were randomly divided into two groups, i.e. the group who receive EECP therapy and those who did not receive EECP therapy with 33 patients in each group. Myeloperoxidase (MPO) as inflammatory marker was examined at baseline and after 6 months of observation. Cardiovascular events were observed as well after 6 months of observation. Unpaired t-test was use to analyze the difference of MPO between the two groups, and chi-square followed by calculation of relative risk were used for estimation of cardiovascular event outcomes.Results: MPO measurement at baseline and after 6 months in EECP group were 643.16 ± 239.40 pM and 422.31 ± 156.26 pM, respectively (p < 0.001). Whereas in non EECP group, the MPO values were 584.69 ± 281.40 pM and 517.64 ± 189.68 pM, repectively (p = 0.792). MPO reduction was observed in all patients of EECP group and in 13 patients (48%) of non-EECP group (p < 0.001). Cardiovascular events were observed in 7 (21.21%) and 15 (45.45%) of patients in EECP and non-EECP groups, respectively (p = 0.037).Conclusion: EECP therapy significantly decreased the level of MPO as inflammatory marker and this decrease was correlated with the reduction of cardiovascular events in CHF patients. (Med J Indones. 2013;22:152-60. doi: 10.13181/mji.v22i3.584)Keywords: CHF, cardiovascular events, EECP, myeloperoxidase
Combined traditional medicine and pharmacological antihypertensive drugs in a rural community of West Java, Indonesia Basuki, Bastaman; Siagian, Minarma; Ilyas, Ermita I.; Amri, Zarni
Medical Journal of Indonesia Vol 13, No 4 (2004): October-December
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.464 KB) | DOI: 10.13181/mji.v13i4.160

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Some hypertensive subjects in Indonesia consume traditional herbal medicines in addition to the usual pharmacological drugs. This paper studied the relationship between several traditional herbal medicines, such as morinda, star fruit, garlic, or jamu, believed to control hypertension and the risk of current pharmacological antihypertensive drug users in subjects with stage 1 and 2 hypertension in a rural community West Java, Indonesia. The data were obtained from 3 field studies by the second year medical students of the Faculty of Medicine, University of Indonesia conducted in 2001, 2002, and 2003 in a subdistrict of the Bogor regency. The subjects were selected randomly from neighborhood clusters. Interviews and blood pressure measurements were conducted at the houses of the subjects by specially trained second year medical students supervised by faculty members. There were 496 subjects with stage 1 or 2 hypertension, with 11.5% under current antihypertensive drugs. Compared with the hypertension stage 1 subjects, hypertension stage 2 subjects were 5.4 times more likely to be currently taking pharmacological antihypertensive medication (adjusted odds ratio = 5.44; 95% confidence interval = 2.64-11.27). The combined of current antihypertensive medication with traditional medicines were cucumber which being the most dominant followed by star fruit and morinda. Reasons for this were probably the strong influence of culture, the limited medical facilities, and high cost of the antihypertensive drugs. It was concluded that in a rural Indonesia, it was common for hypertensive subjects to take pharmacological drugs as well as traditional medicine for antihypertensive therapy. (Med J Indones 2004; 13: 246-51)Keywords: hypertension, pharmacological drugs, traditional medicine, Indonesia
High intensity interior aircraft noise increases the risk of high diastolic blood pressure in Indonesian Air Force pilots Siagian, Minarma; Basuki, Bastaman; Kusmana, Dede
Medical Journal of Indonesia Vol 18, No 4 (2009): October-December
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.482 KB) | DOI: 10.13181/mji.v18i4.375

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Aim: To analyze the effects of aircraft noise, resting pulse rate, and other factors on the risk of high diastolic blood pressure (DBP) in Indonesian Air Force pilots.Methods: A nested case-control study was conducted using data extracted from annual medical check-ups indoctrination aerophysiologic training records at the Saryanto Aviation and Aerospace Health Institute (LAKESPRA) in Jakarta from January 2003 – September 2008. For analysis of DBP: the case group with DBP ≥ 90 mmHg were compared with contral group with DBP < 79 mmHG. One case matched to 12 controls.Results: Out of 567 pilots, 544 (95.9%) had complete medical records. For this analysis there were 40 cases of high DBP and 480 controls for DBP. Pilots exposed to aircraft noise 90-95 dB rather than 70-80 dB had a 2.7-fold increase for high DBP [adjusted odds ratio (ORa) = 2.70; 95% confi dence interval (CI ) = 1.05-6.97]. Pilots with resting pulse rates of ≥ 81/minute rather than ≤ 80/minute had a 2.7-fold increase for high DBP (ORa = 2.66; 95% CI = 1.26-5.61). In terms of total fl ight hours, pilots who had 1401-11125 hours rather than 147-1400 hours had a 3.2-fold increase for high DBP (ORa = 3.18; 95% CI = 1.01-10.03).Conclusion: High interior aircraft noise, high total flight hours,  and high resting pulse rate, increased risk for high DBP. Self assessment of resting pulse rate can be used to control the risk of high DBP. (Med J Indones 2009; 276: 276-82)Keywords: diastolic blood pressure, aircraft noise, resting pulse rate, military pilots
Endothelial cell culture from human umbilical cord vein Subakir, Sri B.; Santoso, Dewi I. S.; Siagian, Minarma; Maging, I.G.A.F.
Medical Journal of Indonesia Vol 3, No 2 (1994): April-June
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.338 KB) | DOI: 10.13181/mji.v3i2.944

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[no abstract available]
Effects of anaerobic exercise and detraining on the caspase-3 expression of rat ventricular cardiomyocyte Siagian, Minarma; Lousiana, Maria; Santoso, Dewi I.S.; Endardjo, Sutjahjo
Medical Journal of Indonesia Vol 24, No 2 (2015): June
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.577 KB) | DOI: 10.13181/mji.v24i2.1220

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Background: Anaerobic physical exercise is a high intensity physical exercise performed in a short time. This exercise can stimulate apoptosis in left ventricular cardiomyocytes. The aim of this study is to analyze the apoptosis of cardiomyocytes after anaerobic exercise and detraining.Methods: Thirty two wistar rats Ratus Novergicus 250-350 grams (8-10 weeks old) were divided into the following groups (n = 4) and given naerobic physical exercise four and 12 weeks (group Exc-4, Exc-12) and anaerobic exercise followed by four weeks of detraining (Exc-4-D, Exc-12-D). The control groups were only observed in the same period (group CTL-4, CTL-12, CTL-4-D, CTL-12-D). At the end of observation, the rats were sacrificed and examination of the expression of caspase-3 as an indicator of apoptosis was done using immunohistochemical staining. Data were analyzed with ANOVA test.Results: An increase in expression of caspase-3 in the group Exc-4 (72.03%) compared to the CTL-4 (27.22%), (p < 0,001); and Exc-12 (79.30%) compared to the CTL-12 (30.53%) (p = 0.027). Detraining process showed a significant decline Capase-3 expression (31.12% in exc-4-D and 30.44% in the exc-12-D).Conclusion: Anaerobic physical exercise can increase apoptosis in rat left ventricle cardiomyocyte characterized by increased expression of caspase-3. Detraining can improve heart condition characterized by decreased expression of caspase-3. 
Aerobic exercise increases connexin43 expression in rat cardiac muscle Chondro, Fransisca; Siagian, Minarma; Santoso, Dewi IS
Universa Medicina Vol 32, No 3 (2013)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2013.v32.155-164

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Background Intercellular communication in cardiac muscle is effected by connexin, particularly connexin43 (Cx43), forming gap junctions in cardiomyocytes. Aerobic physical exercise may result in increased left ventricular size and function. The purpose of the present study was to assess the effect of aerobics and detraining on C43 expression and distribution in rats.MethodsThis was an in vivo experimental study on 32 young male Wistar rats. The animals were divided into the following 8 groups and their interventions: I : 4 weeks of aerobics (A4); II: exercise control for 4 weeks (C4); III: 4 weeks of aerobics plus 4 weeks of detraining (A4D4); IV: 8-week control (C8); V: 12 weeks of aerobics (A12); VI: 12-week control (C12); VII: 12 weeks of aerobics plus 4 weeks of detraining (A12D4); VIII: 16-week control (C16). Rat cardiac tissue was subjected to immunohistochemical assay to determine total Cx43, intercalated disc Cx43, and lateral Cx43. Independent t-test was used to compare all Cx43 parameters between control and treatment groups. ResultsAfter aerobics, there were significant differences in total Cx43, intercalated disc Cx43, lateral Cx43, and intercalated disc Cx43 and lateral Cx43 percentages between control and treatment groups (p<0.05). Between-group comparison in treatment groups did not find significant differences between exercise-only groups and groups with exercise plus detraining. Cx43 surface area tended to decrease after detraining. ConclusionsAerobics significantly increases Cx43 levels in rat hearts. Detraining decreases intercalated disc Cx43 and lateral Cx43.
Combination of aerobic exercise and Hibiscus sabdariffa Linn. increased nitric oxide in rats Adriani, Donna; Siagian, Minarma; Irawati, Dewi
Universa Medicina Vol 36, No 2 (2017)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2017.v36.80-87

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Background Hypertension and myocardial infarction account for the high rate of mortality globally. Hibiscus sabdariffa (HS) Linn. is rich in antioxidants and previous studies have demonstrated its anti-hypertensive effects. Several studies show that regular physical activity is an important component to reduce cardiovascular mortality. The objective of this study was to evaluate the effects of a combination of aerobic exercise and HS extract on nitric oxide (NO) and endothelin-1 (ET-1) in rats. MethodsAn experimental study was conducted on 36 male Wistar rats, aged 4 weeks and 60-70 g in weight. The interventions were aerobic exercises and HS at 400 mg/kg BW/day administered for 4, 8 and 12 weeks. The rats were randomized into 12 groups: 3 control groups (C4, C8, C12), 3 aerobic exercise groups (A4, A8, A12), 3 HS groups (H4, H8, H12), and 3 combination groups [aerobic exercise and HS] (HA4, HA8, HA12). After 4, 8, and 12 weeks, the rats were sacrificed and their abdominal aorta was collected for determination of nitric oxide and ET-1 concentrations. One way ANOVA was used to analyze the data. ResultsThere was a significant difference in NO levels between all groups, with the 4-week aerobic exercise group (A4) showing the highest NO levels compared to the other eleven groups (p<0.05). In contrast, the ET-1 levels were not significantly different between all groups. Conclusions This study demonstrated that the combination of HS supplementation and aerobic exercise increases NO in rats, and provided further evidence to the traditional use of the plant as an antioxidants agent.
Risk factors of low peak bone mass in Indonesian women Sugianto, Ray; Titus, Johana; Siagian, Minarma
Jurnal Gizi Klinik Indonesia Vol 11, No 2 (2014): Oktober
Publisher : Minat S2 Gizi dan Kesehatan, Prodi S2 IKM, Fakultas Kedokteran UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijcn.19010

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Background: Osteoporosis occurred in 64% of Indonesian women aged 60-64 years. The risk of osteoporosis can be reduced by achieving optimal peak bone mass in ages 25-32 years. However, 33.4% women had low peak bone mass (LPBM).Objective: We aimed to develop a tool to identify women at risk of developing LPBM in order to ameliorate this situation. Some risk/protective factors were explored in a case-control study.Method: We recruited 25 cases, those with LPBM (T-score <1) according to peripheral bone densitometry and 25 controls from Cengkareng District, West Jakarta. They were assessed using questionnaires to explore their historical intake of calcium, tea/coffee, and weight-bearing activity. We also measured BMI and body composition. Parameters among case and control groups were analyzed using independent T-test or Mann-Whitney, and odds ratio in relation to peak bone mass was also computed.Results: Between cases and controls, there were no differences observed in BMI, body composition, weight-bearing activity, and historical tea/coffee consumption. Calcium intake from sources other than milk and its derivatives were also found not to differ. Historical calcium index (HCI), measuring weekly calcium intake since childhood, was found lower in cases (median=160 vs 965; p=0.001). HCI cut-off analysis found that the values of 300 and 1000 yielded good specificity (80%) and sensitivity (92%) for LPBM. OR analysis identified those with HCI <1000 (OR=0.61; 95% CI: 2.05−54.95) as at moderate risk of developing LPBM, and HCI ≤ 300 as at higher risk.Conclusion: We concluded that, as low HCI was the risk factor for developing LPBM, calculation of HCI should be done to earlier identify women at risk, thus prompting earlier nutrition and lifestyle intervention to prevent the occurrence of LPBM and future osteoporosis.