Pyrus spp. (Pyrus pashia Buch.-Ham. ex D.Don, Pyrus pyrifolia (Burm.f) Nakai)

Tiwari, Deep C.; Bahukhandi, Amit; Durgapal, Medha; Bhatt, Indra D.

doi:10.1016/b978-0-323-85591-4.00043-x

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…They are usually consumed fresh and/or processed as juices, jams, and jellies [6]. In addition, P. pyrifolia exhibited a wide range of biological activities, including anti-inflammatory, antioxidant, antimicrobial, antidiabetic, and cytotoxic potentials, owing to the presence of various active constituents such as chlorogenic acid, gentisic acid, arbutin, catechin, epicatechin, quercetin, rutin, and leupirol [7]. Lifestyle modifications, depending on a healthy diet, have been regarded as a first-line treatment for MS.…”

Section: Introductionmentioning

confidence: 99%

Modulatory Effect of Pyrus pyrifolia Fruit and its Phenolics on Key Enzymes against Metabolic Syndrome: Bioassay-Guided Approach, HPLC Analysis, and In Silico Study

Mahdy

Abdel-Baki

El-Rashedy

et al. 2023

Plant Foods Hum Nutr

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This study aims to isolate the active constituents of Pyrus pyrifolia Nakai fruits using a bioassay-guided fractionation approach, test their activity in vitro against key enzymes for metabolic disorders, and support it with molecular docking simulations. The antioxidant potential of the methanolic extract (ME), its polar (PF), and non-polar fractions (NPF), along with the inhibitory activity against α-glucosidase, α-amylase, lipase, angiotensin I converting enzyme (ACE), renin, inducible nitric oxide synthase (iNOS), and xanthine oxidase (XO) were assessed. The PF exhibited the highest antioxidant and enzyme inhibitory activity. Purification of PF yielded rutin, isoquercitrin, isorhamnetin-3-O-β-D-glucoside, chlorogenic acid, quercetin, and cinnamic acid. HPLC-UV analysis of the PF allowed for the quantification of 15 phenolic compounds, including the isolated compounds. Cinnamic acid was the most powerful antioxidant in all assays and potent enzyme inhibitor against the tested enzymes (α-glucosidase, α-amylase, lipase, ACE, renin, iNOS, and XO). Additionally, it showed high affinity to target α-glucosidase and ACE active sites with high docking scores (calculated total binding free energy (ΔGbind) -23.11 kcal/mol and − 20.03 kcal/mol, respectively]. A 20-ns molecular dynamics simulation using MM-GBSA analysis revealed a stable conformation and binding patterns in a stimulating environment of cinnamic acid. Interestingly, the isolated compounds’ dynamic investigations including RMSD, RMSF, and Rg demonstrated a stable ligand − protein complex to the active site of iNOS with ΔGbind ranging from − 68.85 kcal/mol to -13.47 kcal/mol. These findings support the notion that P. pyrifolia fruit is a functional food with multifactorial therapeutic agents against metabolic syndrome-associated diseases.

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Section: Introductionmentioning

confidence: 99%