Antioxidative and Circadian Rhythm Regulation Effect of Quercus gilva Extract

Abstract

Trees of the Quercus genus are distributed across the southern regions of South Korea including Jeju-do as well as Japan and China. The genus consists of five species: Quercus myrsinifolia, Quercus gilva, Quercus acuta, Quercus glauca, and Quercus salicina . These trees are recognized as the recommen-ded species for afforestation against global warming, while their distribution has extended to the regions in the northern hemisphere due to global warming (Kira, 1991). Among the five species, Q. gilva is mostly planted as a garden tree or used as a material for window frames and handles. In addition, the acorns of the Quercus trees have long been used as an ingredient of acorn jelly for food in the southern regions according to

Effects of (Poly)phenols on Circadian Clock Gene–Mediated Metabolic Homeostasis in Cultured Mammalian Cells: A Scoping Review

“…The studies included in this review were published from 2008 to 2024, with the majority published after 2016, reflecting the growing scientific interest in (poly)phenols and circadian biology. Table 2 [ [67] , [68] , [69] , [70] , [71] , [72] , [73] , [74] , [75] , [76] , [77] , [78] , [79] , [80] , [81] , [82] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , [90] , [91] , [92] , [93] , [94] , [95] , [96] , [97] , [98] , [99] , [100] , [101] , [102] , [103] , [104] , [105] , [106] , [107] , [108] , [109] ] summarizes the main characteristics and outcomes of the included studies.…”

“… Ellagic acid (EA) 10–100 Chronic: ↑ period and ↓ amplitude of PER2 with ↑ concentration (100 μM).Acute: delay the phase of PER2, dose and time dependent Huh et al. [ 86 ], 2022 Quercus gilva extracts: 95% ethanol or hot water extract of leaf, branch, kernel, and pericarp N/A Human HaCaT Dex (100 nM, 2 h) Treatment with ethanol gilva extract or hot water gilva extract. Control Mouse BMAL1 promoter-luciferase Ethanol extracts: ↑ amplitude of BMAL1, dose dependent, especially the branch extract Manocchio et al.…”

“…Administration of sudachitin, a citrus polymethoxyflavone, induced rhythmic oscillations of BMAL1 -Luc in a dose-dependent manner (1–10 μM) in synchronized human bone osteosarcoma U-2 OS cells [ 85 ]. A Quercus gilva ethanol extract dose dependently increased the rhythmic expression of BMAL1 [ 86 ].…”

“…We have included findings regardless of the concentration used and the nature of the results, whether positive, negative, or conflicting. For example, 3 studies outlined in Table 2 [ [67] , [68] , [69] , [70] , [71] , [72] , [73] , [74] , [75] , [76] , [77] , [78] , [79] , [80] , [81] , [82] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , [90] , [91] , [92] , [93] , [94] , [95] , [96] , [97] , [98] , [99] , [100] , [101] , [102] , [103] , [104] , [105] , [106] , [107] , [108] , [109] ], on cinnamic acid [ 100 ], naringin/naringenin [ 82 ], and catechins [ 106 ] reported no effects on the rhythmicity and/or expression of clock genes. One study showed that resveratrol disrupted the inherent rhythmicity of cardiac cells [ 108 ], whereas another study found no impact on the interaction between SIRT1 and CLOCK or BMAL1 [ 89 ].…”

Inhibition of Biofilm Formation in Yersinia enterocolitica by Edible Plant Extracts Including Polygoni Multiflori Radix

“…enterocolitica. Plant natural products, including forest products, contain compounds with various biological functions (Adfa et al, 2020;Ahn et al, 2021;Arsyad et al, 2020;Ham and Kim, 2019;Huh et al, 2022;Lee et al, 2021;Na and Kim, 2022;Nkogo et al, 2022;Oramahi et al, 2022;Yang et al, 2022;Yoon and Kim, 2021). The library of extracts used in this study is a collection of extracts of plants that include forest products that are used as foods or herbal medicines, and since they are natural materials, they are considered to be safe.…”