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Pengaruh Likopen terhadap Penurunan Aktivitas Mitogen-Activated Protein Kinase (MAPK) dan Ekspresi Endothelin-1 (ET-1) pada Kultur Huvecs yang Dipapar Leptin Fatmawati, Heni; Satuman, Satuman; Rudijanto, Ahmad; Indra, Muhammad Rasjad
Jurnal Natur Indonesia Vol 13, No 2 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.081 KB) | DOI: 10.31258/jnat.13.2.162-167

Abstract

The effect of obesity on vascular function is mediated by hormon leptin. Leptin has been proved to increaseoxidative stress in endothelial cell. The previous study has proven that leptin caused the endothelial dysfunction asa step of the atherogenesis. Lycopene, an antioxidant, is presumed having the ability to block the atherogenesismechanism, which is stimulated a proinflamatory cytokine and adhesion molecules by MAPK and transcriptionfactor ET-1. Therefore, the aim of this research was to prove and to determine whether lycopene could decreasethe MAPK and ET-1 expression in Human Umbillical Vein Endothelial Cells (HUVECs) culture induced by 500 ng/mlleptin. In vitro study used primary culture of the HUVECs were devided in to 7 groups, there were (1) 0 ng/ml leptinand 0 ìM lycopene, (2) induced by 500 ng/ml leptin for 12 hours, (3) induced by leptin and lycopene with concentration10; 25; 40; 55 and 75 ìM for 12 hours. Then the identification of MAPK was applied by using imunocytochemistrycompared with ELISA procedure on cell endothel culture lysate and ET-1 expression was measured by using RTPCR. It was showed that lycopene 10-25 ìM decreased MAPK and ET-1 expression significantly in HUVECs cultureinduced by leptin 500 ng/ml. Leptin was increased ERK1/2 MAPK and ET-1 expression in HUVECs culture and candecrease by lycopene. Optimum dose of lycopene is 10-25 ìM.
DASAR GENETIK OBESITAS VISERAL Indra, Muhammad Rasjad
Jurnal Kedokteran Brawijaya Vol 22, No 1 (2006)
Publisher : Fakultas Kedokteran Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.301 KB) | DOI: 10.21776/ub.jkb.2006.022.01.3

Abstract

Obesity is defined as an excess proportion of totalbody fat. Nearly 40 million adults in the United States can be defined as obese. There are several indexes used to assess  obesity. The most common measure of obesity is the body mass index (BMI). Obesity occurs when a person's calorieintake exceeds the amount of energy he or she burns. Obesity tends to run in families, suggesting that it may have a genetic cause. However, family members share not only genes but also diet and lifestyle habits that may contribute to obesity. Separating these lifestyle factors from genetic ones is often difficult. Still, growing evidence points to heredity as a strong determining factor of obesity. In one study of  adults who were adopted as children, researchers found that their subjects' adult weights were closer to their biological parents' weights than to their adoptive parents'. The environment provided by the adoptive family apparently had less influence on the development of obesity than the person's genetic makeup. Although genes are an important factor in many cases of obesity, a person's environment also plays a significant part. Psychological factors may also influence eating habits. Many people eat in response to negative emotions such as boredom, sadness, or anger. Key words:Genetic, Obesity, visceral
PENINGKATAN KADAR LEPTIN DENGAN PUFA (Polyunsaturated Fatty Acid) MELALUI AKTIVASI PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR gamma (PPARγ) PADA KULTUR PREADIPOSIT KELINCI Indra, Muhammad Rasjad
Jurnal Kedokteran Brawijaya Vol 21, No 2 (2005)
Publisher : Fakultas Kedokteran Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1288.806 KB) | DOI: 10.21776/ub.jkb.2005.021.02.4

Abstract

ABSTRACT For the past three decades, PUFA has been recognized as importnant energy sources and cell membrane component. PUFA also plays key roles in many cellular events such as gene regulation and leptin activation. The role of this fatty acid is still unknown especially in vitro. The purpose of this research was to examine the effect of PUFA of the corn oil in increasing leptin concentration by PPARγ activation. Preadipocyte culture from rabbit was incubated by PUFA of corn oil. PUFA have been given on doses 0, 4, 8 and 16 µM. PPARγ protein and leptin levels were analyzed by ELISA. PPARγ expression  was  analyzed  by  immunocytochemistry.  The research  result  showed  that  every  treatment  has  increased PPARγ levels inconsistently. PPARγ concentration increased significantly on 4 µM PUFA treatment compared to control, 8 and 16 µM PUFA of corn oil. But there were no significant difference between control and 8 µM PUFA treatments. Leptin levels increased significantly between administration on 4 µM PUFA and 16 µM PUFA of corn oil administration. Leptin levels was not significantly different between control and 8 µM PUFA. There was also strong correlation between PPARγ expression and leptin levels. PUFA of corn oil increases leptin levels through PPARγ activation. Key words: PUFA, preadipocyte, leptin, PPARγ
Agarose Coated Culture Plate in Tumorsphere Culture of Cervical Cancer Cell Line HeLa: an Alternative to Non Adhesive Culture Plate Juniartha, Putu; Indra, Muhammad Rasjad; Sujuti, Hidayat; Lyrawati, Diana; Nurseta, Tatit
Journal of Tropical Life Science Vol 6, No 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.11

Abstract

Cervical cancer recurs in 90% cases and linked to cancer stem cells that able to self-renew and responsible for recurrence, metastasis, and mortality of cancer. Isolation and identification of cancer stem cells using serum-free medium needs expensive growth factors and consume time. This study try to grow tumor sphere using culture plate coated with 1% agarose as an efficient and economical alternative to non-adhesive culture plate. HeLa cell line was grew in culture plate coated with 1% agarose and non-adhesive culture plate using similar medium and culture condition. Tumor spheres morphology was observed and the colonies were counted in 7 days followed by single cell assay. Tumor spheres then counted for CD133+, CD34+, and Sox2 expression using flowcytometry. Culture plate coated with 1% agarose can be used as an economic and efficient alternative to culture tumor sphere. Using culture plate coated with 1% agarose, the tumor spheres formed in 7 days with similar morphology to non-adhesive culture plate. Tumorsphere had three dimensional – sphere shape that tightly attached, colonized, and overlapped. The tumor sphere colony counts of two plates were statistically have no significant difference (p=0,667). Single cell assay of a tumor sphere shows that it can grow new tumor spheres with similar morphology. The tumor sphere from culture plate coated with 1% agarose express CD133+ and CD34+ as much as 8.78% ± 2.14 and Sox2 as much as 35.30% ± 23.82 whereas tumor sphere from non-adhesive culture plate express CD133+ and CD34+ as much as 62.36% ± 1.06 and Sox2 as much as 98.86% ± 0.56 (p = 0000).