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INDONESIA
Nexus Kedokteran Translasional
Published by Universitas Sebelas Maret
ISSN : -     EISSN : -     DOI : -
Core Subject : Health,
Medicine & Pharmacology
Arjuna Subject : -
Articles 15 Documents
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Search results for , issue "Vol 6, No 1 (2017): Nexus Kedokteran Translasional" : 15 Documents clear
Boeravinone F, Withanolide D, and Chitranone are a Potential Antagonist of Angiotensin Receptor 1 Insilico for Hypertension Treatment Febri Ningtyas; Sri Wulandari; Balqis .
Nexus Kedokteran Translasional Vol 6, No 1 (2017): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

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Abstract

Introduction: Hypertension is a silent killer which can cause complications such as heart diseases, stroke, and chronic kidney diseases. Olmesartan is a one of the Angiotensin Receptor Blockers (ARBs) for an alternative treatment of hypertension. However, this drug has low bioavailability, short duration, and partial agonist against angiotensin 1 receptor (AT1). Indonesia has more than 6.000 phytochemicals which are derived from various herbal plants but their therapeutic effects are unknown. Molecular docking is an initial step to find new drug candidates that have shorter time and lower cost. Therefore, this study aimed to identify phytochemicals as an AT1 antagonist through molecular docking for hypertension treatment. Methods: This was a bioinformatics study. Research samples were all phytochemicals registered in HerbalDB, had 3 dimention structure, and met criteria of Lipinski's rule of five. Olmesartan was used as a standard ligand and obtained from PubChem. AT1 receptor was downloaded from Protein Data Bank. Validation of receptor-standard ligand binding complexes was done by using Autodock Vina 1.1.2 five times. Docking results were visualized using Pymol 1.7 and Chimera 1.10. Data were analyzed using docking scores, binding sites, molecular conformation, and criteria of Lipinski's rule of five.Results: Olmesartan had -9.9 Kcal/mol docking score and interacted with the AT1 receptor at Tyr35, Trp84, dan Arg167 residues. Boeravinone F (-10,2 Kcal/mol), Chitranone (-10,5 Kcal/mol), and Withanolide D (-10,8 Kcal/mol) had lower docking score than olmesartan. These phytochemicals had binding sites as same as olmesartan except Chitranone with an additional binding site at Asp281 residue. The phytochemicals had different conformation from olmesartan but had similarity of chemical properties with olmesartan. Conclusions: Boeravinone F, Chitranone, and Withanolide D can be potential as an AT1 receptor inhibitor insilico for hypertension treatment. Keywords: hypertension, AT1 receptor, olmesartan, phytochemicals, molecular docking.
The Effectiveness of the Leaf Extract of Jati Belanda (Guazuma ulmifolia Lamk) as Dengue Antiviral In Vitro Yani Dwi Pratiwi; Leli Saptawati; Siti Marufah
Nexus Kedokteran Translasional Vol 6, No 1 (2017): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

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Abstract

Introduction: Dengue Haemorrhagic Fever is one of a serious disease in the world because it can cause death. During all these years, DHF in Indonesia only treated by symptomatic and supportive therapy. The purpose of this study was to determine the effectiveness of Jati Belanda leafs extracts as antiviral dengue in vitro. Methods: The method used is pure experimental research and the research design method is post test only control group design. The subject is dengue virus serotype 2 strain New GuineaC (DENV2 NGC) obtained from the Laboratory of Virology and Molecular Biology Department of Microbiology, Faculty of Medicine, University of Indonesiaand this research was started from June until November 2016. The independent variables in this study is the concentration of Jati Belanda leafs extracts obtained from Pharmaceutical Laboratory of Faculty Pharmacy, Gadjah Mada University and dependent variable are infectivity value and viability value. The collected data are presented in tables. Results:In concentration 40 g/ml, the infectivity value is 12.6% and the viability value is 91.4%. Conclusions: The leaf extracts of Jati Belanda is potentially effective as antiviral dengue. Keywords: dengue, Jati Belanda extract, antivirus, DHF
Indonesian Pythochemical as Erythropoietin Agonist In Sillico to Treatment Anemia in Chronic Kidney Disease Muhammad Rizki Kamil; Yuliana Heri Suselo; R. Aj Sri Wulandari
Nexus Kedokteran Translasional Vol 6, No 1 (2017): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

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Abstract

Background: Anemia is the most frequent complication in CKD and until now the its treatment still hampered effectiveness and efficiency. Indonesia is known to have 9,600 species of plants that have a pharmacological effect and some compounds have been created for 3D structures and databases. Molecular docking is beginning of the process of the invention the drug most widely used. This study aims to screen Indonesian herbal plant that has activity as an agonist of erythropoietin receptor for treatment of anemia in CKD development with molecular docking method. Methods: The research was a bioinformatics study which utilized all phytochemicals in HerbalDB that had PubChem access code and met the criteria for Lipinski's rule of five as sample. The complex of Epo-EpoR was obtained from the Protein Data Bank, code: 1CN4. Validation of truncated Epo with EpoR needed to get docking scores and binding site at EpoR. Molecular docking between phytochemical compounds with EpoR models was done using AutodockVina 1.1.2. Visualization of docking results was done using PyMOL 1.7.4. Results: There are 12 phytochemicals that have 10 of 17 in common EpoR binding site. There are seven of them met the criteria phytochemical Lipniski's rule of five and then two phytochemicals are selected which has the most variation binding site to EpoR, 18 sites. GibberellinA51 and Miraxanthin-III were two selected phytochemicals of the most potentially as EpoR agonist based on analysis of docking scores, binding site similarity with truncated Epo, and Lipinski's rule of five criterias. Conclussion: GibberellinA51 and Miraxanthin-III were the most potent Indonesian phytochemicals that could be a EpoR agonist to development of treatment anemia in CKD. Keywords: Anemia, CKD, EpoR agonists, Indonesian phytochemicals, molecular docking
A Potential Candidate of Lactate Dehydrogenase Inhibitor Derived from Indonesia Herbal Compounds Adam Haviyan Nasrullah; Dono Indarto; Riza Novierta Pesik; R. AJ. Sri Wulandari
Nexus Kedokteran Translasional Vol 6, No 1 (2017): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

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Abstract

Introduction: Lactate dehydrogenase A (LDHA) is an enzyme that catalyzes pyruvate into lactate. LDHA plays an important role in promotion of cancer cells growth through increasing aerobic glycolysis. Because LDHA has a central role in energy metabolism, it become a molecular target for development of anticancer drug. This was a biocomputational study that aimed to identify Indonesian herbal compounds which became a potential candidate of LDHA inhibitor via molecular docking analysis. Methods: Samples in this study were Indonesian herbal compounds that met the following criteria: (1) Registered on Database Herbal Indonesia, (2) had three-dimensional structure, and (3) met the criteria Lipinski rule of five. Oxamate used as a ligand standard and was validated using Autodock Vina software. Herbal compounds were also docked using the same program. Docking results were visualized using PyMOL software. LDHA inhibitor candidate is determined by comparing herbal compounds and standard ligand in terms of binding energy, binding site and Lipinski criteria. Result: Oxamate interacting with LDHA had -4.26 0.06 kcal / mol binding energy and bound to six amino acid residues at Gln 99, Arg 105, Asn 137, Arg 168, His 192, and Thr 247. A lower binding energy was observed in 23 herbal compounds and these compounds bound to LDHA at least five amino acid residues like Oxamate. Herbal compounds Phaseolic Acid, Sebacic Acid, D (-) - Fructose, Suberic Acid and Pimelic Acid interacted with amino acid residues of LDHA as same as Oxamate. The other herbal compounds interacted with less or more than six amino acid residues of LDHA. Based on characteristics of five herbal compounds, Phaseolic Acid, Sebacic Acid and Suberic Acid were probably the best candidates of LDHA inhibitor. Conclusion: Phaseolic Acid, Sebacic Acid and Suberic Acid become biocomputationally the best LDHA inhibitor. Enzymatic assays are needed to investigate whether or not all these compounds can inhibit LDHA enzyme activity. Keywords : Cancer, Inhibitor LDHA, Molecular Docking, Herbal Indonesia
Pomegranate Extract Does Not Inhibit Sodium Glucose co-Transporter 2 Protein in Vero Cells Mila Ulfia; Dono Indarto; Amelya Augusthina Ayu Sari; Yuliana Heri Suselo
Nexus Kedokteran Translasional Vol 6, No 1 (2017): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.209 KB)

Abstract

Backgrounds: Mutation of SLC5A2 gene which encodes sodium glucose co-transporter2 (SGLT2) protein enhances glucose reabsorption on the kidney tubule in some patients with type 2 diabetes (DMT2). Dapagliflozine an oral antidiabetic drug, inhibits SGLT2 activity. Ellagic acid is able to inhibit SGLT2 protein in silico and highly found in pomegranate fruits. The aim of this study was to investigate the effect of pomegranate extracts on glucose levels in a model cell of African green monkey (Vero cell line). Methods: This study was an experimental laboratory with posttest only control group design. 1 x 106 Vero cells perwell were used in five experimental groups: negative control 1 (KKn1), KKn with 20% glucose (KKn2), positive control with dapagliflozine (KKp), ethanol and diethyl ether extract of pomegranate peel (KEDA), methanol extract of pomegranate seeds (BMA). Vero cells were then treated with 125 ppm pomegranate extracts (KEDA and BMA) and incubated for 24 hours. Cell morphology was observed under an inverted microscope with 100 x magnification. Glucose levels in Vero cells were measured using spectrophotometer. Collected data was analyzed descriptively. Result: Morphology of Vero cells was oval, soliter and centered nucleus and did not change during incubation with pomegranate extracts. Glucose levels in Vero cells treated with BMA (28.5 mg/dL) and KEDA (29 mg/dL) were higher than glucose levels in control groups KKp, KKn1, and KKn2 (2.5, 6.5 and 8 mg/dL respectively). Conclusion; Pomegranate extracts do not inhibit SGLT2 protein and increase glucose levels in Vero cells. Purification of pomegranate extracts is required for further investigation of the capability of ellagic acid inhibiting SGLT2 protein. Keywords: Ellagic acid, glucose level, pomegranate, SGLT2, type 2 diabetes.

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