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Papers of the Week

Papers: 11 Feb 2023 - 17 Feb 2023

Basic Science

Molecular/Cellular, Pharmacology/Drug Development

2023 Jan 23

Int J Mol Sci




In Vivo and In Silico Analgesic Activity of Extract Containing 2-O-β-D-(3′,4′,6′-Tri-acetyl)-glucopyranosyl-3-methyl Pentanoic Acid.


Mohammed HA, Abouzied AS, Mohammed SAA, Khan RA


Natural product-based structural templates have immensely shaped small molecule drug discovery, and new biogenic natural products have randomly provided the leads and molecular targets in anti-analgesic activity spheres. Pain relief achieved through opiates and non-steroidal anti-inflammatory drugs (NSAIDs) has been under constant scrutiny owing to their tolerance, dependency, and other organs toxicities and tissue damage, including harm to the gastrointestinal tract (GIT) and renal tissues. A new, 3′,4′,6′-triacetylated-glucoside, 2-O-β-D-(3′,4′,6′-tri-acetyl)-glucopyranosyl-3-methyl pentanoic acid was obtained from , and characterized through a detailed NMR spectroscopic analysis, i.e., H-NMR, C-DEPT-135, and the 2D nuclear magnetic resonance (NMR) correlations. The product was in silico investigated for its analgesic prowess, COX-2 binding feasibility and scores, drug likeliness, ADMET (absorption, distribution, metabolism, excretion, and toxicity) properties, possible biosystem’s toxicity using the Discovery Studio, and other molecular studies computational software programs. The glycosidic product showed strong potential as an analgesic agent. However, an in vivo evaluation, though at strong levels of pain-relieving action, was estimated on the compound’s extract owing to the quantity and yield issues of the glycosidic product. Nonetheless, the extract showed the analgesic potency in eight-week-old male mice on day seven of the administration of the extract’s dose in acetic acid-induced writhing and hot-plate methods. Acetic acid-induced abdominal writhing for all the treated groups decreased significantly ( < 0.0001), as compared to the control group (n = 6) by 62.9%, 67.9%, and 70.9% of a dose of 100 mg/kg (n = 6), 200 mg/kg (n = 6), and 400 mg/kg (n = 6), respectively. Similarly, using the analgesia meter, the reaction time to pain sensation increased significantly ( < 0.0001), as compared to the control (n = 6). The findings indicated peripheral and central-nervous-system-mediated analgesic action of the product obtained from the corresponding extract.