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Screening of anti-inflammatory phytocompounds from Crateva adansonii leaf extracts and its validation by in silico modeling.

ABSTRACT: Anti-inflammatory phytocompounds from Crateva adansonii DC leaf extracts were identified by GCMS analysis and its anti-inflammatory potential was evaluated by in silico molecular docking study against inflammatory molecular targets. Three different (Aqueous, Methanol and Petroleum ether) dried leaf extracts of Crateva adansonii were obtained from soxhlet extraction method. Preliminary phytoconstituents analysis of three different leaf extracts of C. adansonii confirmed the presence of various major classes of bioactive phytoconstituents such as polyphenols (tannins and flavonoids), steroids, alkaloid, coumarin, carbohydrate and terpenoids. Among three leaf extracts, methanolic leaf extract possess highest total phenolic content of 77?±?1.65?µg gallic acid equivalent (GAE)/g of dry weight of leaf extract, subsequently methanolic leaf extract also shows maximal in vitro antioxidant activity (DPPH scavenging activity) of 71.22?±?1.32% among three different leaf extracts. GC-MS analysis of petroleum ether leaf extract revealed the presence of nine phytocompounds representing 95.43% peak area percentage, among nine identified phytocompounds three phytocompounds of C. adansonii possess anti-inflammatory property namely phytol, 1-Hexyl-2-Nitrohexane and 2-Isopropyl-5-Methylcyclohexyl 3-(1-(4-Chlorophenyl)-3-Oxobutyl)-Coumarin-4-Yl Carbonate were chosen for in silico molecular docking study against four inflammatory receptor targets (COX-2, TNF?, IL-1? and IL-6) and they shows less binding energy with highest docking score ranging from -15.9500 to 5.0869. The present study substantially indicated and proven that anti-inflammatory potential of phytocompounds from C. adansonii leaf extracts which can be exploited for commercial designing of novel anti-inflammatory drug to treat various inflammatory disorders.

SUBMITTER: Thirumalaisamy R

PROVIDER: S-EPMC6354007 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Screening of anti-inflammatory phytocompounds from Crateva adansonii leaf extracts and its validation by in silico modeling.

Thirumalaisamy Rathinavel R Ammashi Subramanian S Muthusamy Govarthanan G

Journal, genetic engineering & biotechnology 20180323 2

Anti-inflammatory phytocompounds from Crateva adansonii DC leaf extracts were identified by GCMS analysis and its anti-inflammatory potential was evaluated by in silico molecular docking study against inflammatory molecular targets. Three different (Aqueous, Methanol and Petroleum ether) dried leaf extracts of Crateva adansonii were obtained from soxhlet extraction method. Preliminary phytoconstituents analysis of three different leaf extracts of C. adansonii confirme ...[more]

PMID: 30733792

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Project description:Eucalyptus spp. and Pistascia lentiscus are among the Palestinian trees that are traditionally used in folkloric medicine in treating many diseases; leaves of which are thought to have anti-inflammatory, antibacterial and antioxidant effects. The goal of this study is to evaluate the in vitro inhibitory effect of Eucalyptus spp. and Pistascia lentiscus extracts on Lipopolysacaride (LPS)-induced Interlukin-6 (Il-6) and Tumor Necrosis Factor-α (TNF-α) by polymorphonuclear Cells (PMNCs).Polymorphonuclear cells were isolated from the whole blood using Histopaque (Ficol-1077) method and then cultured in an enriched Roswell Park Memorial Institute (RBMI) medium. Supernatants' Interlukin-6 (IL-6) and Tumor Necrosis Factor (TNF-α) levels were determined 24 hour after LPS stimulation. HPLC was employed to determine the concentration of phenolic compounds in the extracts. The concentrations of TNF-α and IL-6 were compared using paired-samples t test.Eucalyptus spp. and Pistascia lentiscus leaves extracts have shown significant reduction in the levels of both Il-6 and TNF-α Gallic acid; a strong anti-inflammatory agent was found to be the major phenolic compound in both leaf extracts. However, other anti-inflammatory phenolic compounds were detected in Pitascia lentiscus extract including syringic acid and p-coumaric acid, while chlorogenic acid was detected in Eucalyptus spp. leaf extract.Reduction in the levels of Il-6 and TNF-α upon the effect of both Eucalyptus spp. and Pistascia lentiscus extract is an indication of their anti-inflammatory effects. Our results may also indicate that the observed anti-inflammatory effect of the above extracts may be due to the presence of gallic acid and other phenolic compounds. List of Abbreviations and Nomenclature: LPS: Lipopolysacaride, Il-6: Interlukin-6, TNF-α: Tumor Necrosis Factor-α, PMNCs: Polymorphonuclear Cells, HPLC: High Performance Liquid Chromatography, ELISA: Enzyme Linked Immune Sorbent Assay, EDTA: Ethylene Diamine Tetra Acetic acid, PBS: phosphate buffered saline, RPMI: Roswell Park Memorial Institute medium FBS: Fetal Bovine Serum.

Project description:Herbal extracts represent an ample source of natural compounds, with potential to be used in improving human health. There is a growing interest in using natural extracts as possible new treatment strategies for inflammatory diseases. We therefore aimed at identifying herbal extracts that affect inflammatory signaling pathways through toll-like receptors (TLRs), TLR2 and TLR4. Ninety-nine ethanolic extracts were screened in THP-1 monocytes and HeLa-TLR4 transfected reporter cells for their effects on stimulated TLR2 and TLR4 signaling pathways. The 28 identified anti-inflammatory extracts were tested in comparative assays of stimulated HEK-TLR2 and HEK-TLR4 transfected reporter cells to differentiate between direct TLR4 antagonistic effects and interference with downstream signaling cascades. Furthermore, the ten most effective anti-inflammatory extracts were tested on their ability to inhibit nuclear factor-κB (NF-κB) translocation in HeLa-TLR4 transfected reporter cell lines and for their ability to repolarize M1-type macrophages. Ethanolic extracts which showed the highest anti-inflammatory potential, up to a complete inhibition of pro-inflammatory cytokine production were Castanea sativa leaves, Cinchona pubescens bark, Cinnamomum verum bark, Salix alba bark, Rheum palmatum root, Alchemilla vulgaris plant, Humulus lupulus cones, Vaccinium myrtillus berries, Curcuma longa root and Arctostaphylos uva-ursi leaves. Moreover, all tested extracts mitigated not only TLR4, but also TLR2 signaling pathways. Seven of them additionally inhibited translocation of NF-κB into the nucleus. Two of the extracts showed impact on repolarization of pro-inflammatory M1-type to anti-inflammatory M2-type macrophages. Several promising anti-inflammatory herbal extracts were identified in this study, including extracts with previously unknown influence on key TLR signaling pathways and macrophage repolarization, serving as a basis for novel lead compound identification.

Dataset Information

Screening of anti-inflammatory phytocompounds from Crateva adansonii leaf extracts and its validation by in silico modeling.

Publications

Screening of anti-inflammatory phytocompounds from <i>Crateva adansonii</i> leaf extracts and its validation by <i>in silico</i> modeling.

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