STUDI IN SILICO DAN HUBUNGAN KUANTITATIF STRUKTUR TERHADAP AKTIVITAS TANAMAN MANGROVE (Avicennia marina (Forssk.) Vierh.) SEBAGAI ANTIDIABETES

2020 ◽  
Vol 2 (1) ◽  
pp. 112
Author(s):  
Arinil Hidayati ◽  
Siswandono Siswandono ◽  
Pramudita Riwanti

The research is applied to 20 compounds contained  into <em>Avicennia marina</em> which is : <em>4’,5-dihydroxy-3’,5’,7-trimethoxyflavone, isorhamnetin 3-O-rutinoside, quercetin, stenocarproquinone B, avicennone C, avicennone E, avicennone F, avicennone D,   4’,5-dihydroxy-3’,7-dimethoxyflavone, chrysoeriol 7-O-glucoside, naphta(1,2-b)furan-4,5-dione, 3-hydroxy-naphta(1,2-b)furan-4,5-dione, kaempferol, 5-hydroxy-4’,7-dimethoxyflavone, avicequinone C, 2-[2’-(2’-hydroxy)propyl]-naphta[1,2-b]furan-4,5-dione, 4’,5,7-trihydroxyflavone, luteolin 7-O-methylether, luteolin 7-O-methylether 3’-O-beta-D-glucoside, 5,7-dihydroxy-3’,4’,5’-trimethoxyflavone</em> which are expected  to have an  effect as antidiabetics agent. It is undertaken to find out the linier or nonlinier relationship of  the structure activty (QSAR), the physicochemical characters (lipophilic, electronic, dan steric) to the activity changing (<em>rerank score</em>). Moreover, it is also undertaken to find out which one of those 20 <em>Avicennia marina </em>compounds are predicted to possess the activity as the best antidiabetics agent by the comparison of pioglitazon. It is arranged through computerized methods or <em>in silico</em> not only for having  the structure of two and three dimensions but also knowing the physicochemical characters too; through some programs such as  <em>ChemBioDraw Ultra </em>12.0 and <em>ChemBio3D Ultra </em>12.0 from <em>CambridgeSoft. The docking </em>program is used to make prediction of  the activity  by using <em>Molegro Virtual  Docker </em>2011.5.0.0 from CLCBio<em>.</em> by using the <em>peroxisome proliferator-activated receptor-gamma </em>(PPAR𝛾) in code of PDB: 2XKW. The result of the regression analysis through IBM SPSS program shows nonlinear relationship among structures, <em>Avicennia marina</em> physicochemical characters of twenty compound contents dealing with the activity changing. The compound of  <em>isorhamnetin 3-O-rutinoside</em><em>, chrysoeriol 7-O-glucoside, </em>and <em>luteolin 7-O-methylether 3’-O-beta-D-glucoside </em>are predicted to have the best antidiabetics agent if it is compared with the comparing drug pioglitazon.

Author(s):  
Hasanain Abdulhameed Odhar ◽  
Safaa Muhsen Kareem ◽  
Mohammed Ridha A Alhaideri ◽  
Mohammed Abbas Hasan ◽  
Werner J Geldenhuys

Parkinson’s disease is an age related neurodegenerative disease. Pioglitazone is a Peroxisome proliferator-activated receptor gamma agonist that has been shown to display a neuroprotective effect in parkinsonian models (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine treated mice). This effect was partially attributed to the ability of thiazolidinedione (TZD) moiety in Pioglitazone to selectively inhibit monoamine oxidase B (MAO-B) enzyme. In the current study, we screened several thiazolidine containing compounds against MAO-B enzyme both in silico and in vitro. Based on the resulted data and information from previous literatures, we were able to design a novel scaffold for MAO-B inhibitors. This scaffold (compound 5482440) was able to inhibit MAO-B enzyme with IC50 value of 1.447 μM. Structure-based virtual analysis showed that this compound was able to participate in water-bridge formation and obtain an extended conformation within MAO-B active site.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ekrem Akbulut ◽  
Servet Yolbas ◽  
Metin Ozgen

Abstract Objectives Axial spondyloarthritis (axSpA) is a chronic inflammatory disease that mainly affects the axial skeleton. Peroxisome proliferator activated receptor alpha (PPARA) is an intracellular transcription factor, which play a role in inflammation and osteoblasting activity. This study is designed to investigate the relationship of NG_012204.2:p.Ala268Val polymorphism of PPARA with axSpA risk and its role in disease development. Methods This study was conducted with 168 patients and 181 controls. Genotyping was done with MALDITOF. Gene expression level was analyzed by quantitative real time PCR (RT-qPCR). The protein homology models of PPARA were created with ProMod3. Ligand binding dynamics were tested using the AutoDock4 docking program. Statistical evaluations were made with SPSS (ver24) and GeneGlobe. Results Our results showed that C>T polymorphism causing NG_012204.2:p.Ala268Val change was associated with disease risk (p=0.024) and T allele increased disease risk 1.7 times (95% CI=1.070–2.594). PPARA expression decreased (p<0.05) in individuals carrying the T allele. We determined that the ligand entry pocket was opened 1.1 Å in the polymorphic PPARA. Polymorphic change caused a decrease in the ligand binding affinity. Conclusions Our results provide an important contribution to elucidating the development of axSpA and demonstrate the potential of PPARA as a marker for the diagnosis of axSpA.


Author(s):  
POORNIMA T ◽  
MANJU PT ◽  
ANJANA E

Objective: Diabetes mellitus is a set of metabolic disease in which there is increased blood sugar level over a long period. The objective of the study is in silico design of quinoxaline bearing thiazolidinone derivatives as peroxisome proliferator-activated receptor gamma (PPARγagonist in diabetes mellitus. Methods: In silico design of proposed derivatives was conducted by ACD Lab ChemSketch 12.0 and derivatives obeying Lipinski’s rule of five were selected for docking studies. Docking was carried out using AutoDock Vina software. Results: Molinspiration results revealed that the designed derivatives had physical and chemical properties meant for an orally available drug. Based on the docking results derivatives, QNT1 and QNT2 exhibited high docking score which indicates that these derivatives possess high-affinity and high polar interaction toward protein 1PRG (ligand-binding domain of human peroxisome proliferator-activated receptor gamma). Conclusion: The designed quinoxaline bearing thiazolidinone derivatives were found to possess good binding affinity and good interaction in the binding pocket of target 1PRG, so these derivatives are expected to exhibit good antidiabetic property with minimal side effects.


Author(s):  
Azadeh Hamedi ◽  
Amirhossein Sakhteman ◽  
Seyed Mahmoud Moheimani

Aim: Aromatherapy products, hydrosol beverages and distillates containing essential oils are widely used for cardiovascular conditions. Investigation of the possible activity of their major constituents with the cardiovascular related receptors may lead to develop new therapeutics. It also, may prevent unwanted side effects and drug-herb interactions. Materials and Methods: A list of 243 volatile molecule (mainly monoterpene and sesquiterpene) were prepared from literature survey in Scopus and PubMed (2000-2019) on hydrosols and essential oils which are used for cardiovascular diseases (CVD) and its risk factors (diabetes mellitus and hyperlipidemia). The PDB files of the receptors (229 native PDB files) included alpha glucosidase, angiotensin converting enzymes, beta-2 adrenergic receptor, glucocorticoid, HMGCoA reductase, insulin, mineralocorticoid, potassium channel receptors and peroxisome proliferator-activated receptor alpha, were downloaded from Protein Data Bank. An in silico study using AutoDock 4.2 and Vina in parallel mode was performed to investigate possible interaction of the molecules with the receptors. Drug likeliness of the most active molecules was investigated using DruLiTo software. Results: Spathulenol, bisabolol oxide A, bisabolone oxide, bergapten, bergamotene, dill apiole, pcymene, methyl jasmonate, pinocarveol, intermedeol, α-muurolol, S-camphor, ficusin, selinen-4- ol, iso-dihydrocarveol acetate, 3-thujanone, linanool oxide and cadinol isomers made a better interaction with some of the named receptors. All of the named molecules had an acceptable dug likeliness except for α-bergamotene. Also, all of the named molecules had the ability to pass the blood brain barrier and it is possible to produce unwanted side effects. Conclusion: Some ingredients of essential oils might be active on cardiovascular related receptors.


2020 ◽  
Author(s):  
Naoki Iwasa ◽  
Takeshi K. Matsui ◽  
Naritaka Morikawa ◽  
Yoshihiko M. Sakaguchi ◽  
Tomo Shiota ◽  
...  

AbstractIschemic stroke is one of the most common neurological disease. However, the impact of ischemic stroke on human cerebral tissue remains largely unknown; due to a lack of ischemic human brain samples. In this study, we used cerebral organoids derived from human induced pluripotent stem cells to evaluate the effect of oxygen-glucose deprivation/reoxygenation (OGD/R). We identified 15 differentially expressed genes (DEGs); and found that all the DEGs were downregulated. Pathway analysis showed the relationship of vitamin digestion and absorption, fat digestion and absorption, peroxisome proliferator-activated receptor signaling pathway, and complement and coagulation cascades. These findings indicate the mechanisms underlying ischemic injury in human cerebral tissue.


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