Background Gardenia gummifera L.f. (Family: Rubeacea) is used in indigenous system of medicine to cure many diseases. To authenticate the traditional medicinal claim investigation has been under taken to evaluate the antioxidant and hepatoprotective activities of Gardenia gummifera L.f. fruit methanol extract (GFME). Method GFME was evaluated using various antioxidant assays, including DPPH and Nitric oxide radical scavenging assays. The protective effects of GFME were studied in carbon tetrachloride reduced biochemical markers of hepatic injury such as serum glutamyl oxaloacetate transaminase (SGOT), serum glutamyl pyruvate transaminase (SGPT), alkaline phosphatase (ALP), total protein (TP), total bilirubin (TB) and direct bilirubin (DB) and in silico studies were carried out to screen the GFME phytocompounds. Results The extract showed significant antioxidant activity in DPPH and Nitric oxide radical scavenging with IC50 value of 131.11 and 175.95 respectively. Quantitative phytochemical assay determines the presence of alkaloids 69.1 μg/1 mg and phenolics 76.5 μg/1 mg. GC-MS analysis of aromatic extract resulted in 36 compounds. Among them, compounds 2, 3-Dihydro-3,5-dihydroxy-6-methyl-4 h-pyran-4-one, 2-furancarboxaldehyde 5-(hydroxymethyl) and Quinic acid are the major ones. The fruit methanol extract showed significant in vivo hepatoprotective activity by altering the levels of liver function biochemical parameters such as SGOT, SGPT, ALP, TP, TB and DB. Histology of the liver section also confirms the hepatoprotective activity of GFME. Molecular docking of GC-MS profiled phytocompounds with the target protein TGF-β1and PPARα also confirmed the therapeutic effect with good hydrogen bonding and hydrophobic interactions. Conclusion Thus the present study clearly strengthened the traditional medicinal claim of the plant Gardenia gummifera L.f. possessing the hepatoprotective drug.
Background: Bridelia scandens Wild. (Euphorbiaceae) leaves are widely used to cure asthma, bronchitis pleurisy, exudation, sores in mouth and genital cancers. Objective: To evaluate antibacterial activity of the leaf calli methanol extract (LCME). Materials and Methods: Mass production of leaf calli was established on MS medium supplemented with 0.5 mg/L BAP and 0.5 mg/L 2, 4-D. Methanol extract of the dried calli was subjected to HR-LCMS analysis, antibacterial screening of the extract was carried out against human pathogenic clinical isolates. Molecular docking study of HR-LCMS identified compounds was performed by docking with bacterial enzyme DNA gyrase. Results: HR-LCMS analysis of LCME shows that the compounds azaperone bifonazole, fusidic acid, lasalocid and quinine as the major constituents. The antibacterial screening of LCME against clinical pathogens showed significant bactericidal activity against the strains Staphylococcus aureus (17.67±0.88 mm.d.), Streptococcus pneumonia (13.67±0.33), Pseudomonas aeruginosa (16.33±0.67), Salmonella typhi (17.67±0.33), and Vibrio cholera (15.33±0.33) as compared to the standard drug ciprofloxacin. The molecular docking of lasalocid against the bacterial enzyme DNA gyrase exhibited good binding affinity of-4.9 kcal/mol, good drug likeness (2.5589), 2 hydrogen bonds and hydrophobic interaction with 7 amino acid residues, so that lasalocid processes good inhibitor as compared to other 4 compounds. Conclusion: LCME of Bridelia scandens showed significant antibacterial activity against Staphylococcus aureus and Salmonella typhi. Lasalocid is the major phytocomponent of LCME which exhibited good inhibitory activity against bacterial enzyme DNA gyrase. This investigation supported traditional claim of LCME as potential antibacterial drug.
Introduction: Gnetum ula is a notable medicinal plant used to cure various ailments. The stem part of the plant is used traditionally to treat jaundice and other disorders. The present work is to investigate the in vitro hepatoprotective and antioxidant activity of ethanol extract of stem of G. ula (GUE) and its isolated compound gnetol. Methods: Column chromatography was carried out for GUE and various column fractions were obtained. DPPH and reducing power assays were performed for GUE and column fractions. The potent fraction was characterized, interpreted and tested for in vitro hepatoprotective activity on the BRL3A cell line. In silico docking studies of gnetol compound on the protein TGF-β (transforming growth factor – β) and Peroxisome proliferator-activated receptor α (PPARα) was carried out. Results: DPPH scavenging and reducing power assay showed that the fourth column fraction has antioxidant potential than other fractions. The fourth column fraction was characterized to obtain gnetol compound. BRL3A cell line was used for the toxicity study of GUE and gnetol. Both, the extract and the isolated compound were found to be nontoxic with CTC50 value more than 1000 µg/mL. At the concentration of 200 µg/mL, GUE and gnetol offered cell protection of 50.2% and 54.3%, however, silymarin showed 77.15% protection at 200 µg/mL concentration against CCl4 treated BRL3A cell line. The docking results of the ligand molecule TGF-β showed that gnetol has the binding affinity of -7.0 and standard silymarin being -6.8. TGF-β showed good hydrophobic interactions and formed two hydrogen bonds with the amino acids. For PPARα protein, gnetol showed the binding affinity of -8.4 and silymarin with -6.5. Hydrogen bonding and good hydrophobic interactions against the amino acid molecules in relation to the PPARα protein are shown. Conclusion: Gnetum ula stem extract and its isolated compound are safe and offered significant hepatoprotection against CCl4 induced toxicity. Isolated compound gnetol exhibited a potent antioxidant activity offering protection to liver damage. However, in vivo studies need to be carried out to validate the traditional use of G. ula .
Mammea suriga Kosterm. is a RET species distributed in Malnad region of the Western Ghats, which is over exploited for flowers, seeds and timbers, hence the population is declined. The study was conducted to evaluate the germination potency of the seeds in both in vivo and in vitro conditions to derive a regeneration protocol for the ex situ conservation. Among the pre-treated seeds, the decoated seeds pre-treated with 0.5 mg L-1 NAA for 24 h resulted in 86 % of germination. In in vitro condition, culture of decoated seeds on MS medium supplemented with 0.5 mg L-1 NAA and 0.1 mg L-1 TDZ resulted 91.67 % of germination. Micropropagation studies showed that the interaction of 2-3 mg L-1 BAP and 0.2 mg L-1 TDZ induced multiple shoots from cotyledonary and hypocotyl explants. Mass of callus induced from the leaf explants at the concentration of 1 mg L-1 2,4-D and 3 mg L-1 BAP. Later on the photosynthetic callus, organise in to shoot buds at the concentration of 3 mg L-1 BAP and 0.2 mg L-1 TDZ. The excised micro shoots showed rhizogenesis on the media fortified with 1.5 mg L-1 IBA. The regenerants derived from both direct and indirect organogenesis exhibited similar morphological features.
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