Aqueous extract prepared from steamed red amaranth (Amaranthus gangeticus L.) leaves protected human lens cells against high glucose induced glycative and oxidative stress

doi:10.1111/1750-3841.15822

中山醫學大學機構典藏 CSMUIR > 中山醫學大學研究成果 > 期刊論文 > Item 310902500/23643

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/23643

Title:	Aqueous extract prepared from steamed red amaranth (Amaranthus gangeticus L.) leaves protected human lens cells against high glucose induced glycative and oxidative stress
Authors:	Hsiao, LW;Tsay, GJ;Mong, MC;Liu, WH;Yin, MC
Keywords:	aldose reductase;anti-glycative;HLE-B3 cells;RAGE;steamed red amaranth leaf
Date:	2021
Issue Date:	2022-08-05T09:40:35Z (UTC)
Publisher:	WILEY
ISSN:	0022-1147
Abstract:	HLE-B3 cell line, a human lens epithelial cell line, was used to examine the anti-glycative and anti-oxidative protection of aqueous extract prepared from steamed red amaranth leaves against high glucose induced injury. Phytochemical profile of this aqueous extract was analyzed. HLE-B3 cells were pretreated by this aqueous extract at 0.25%, 0.5%, or 1%, and followed by high glucose treatment. Results showed that the content of phenolic acids, flavonoids, anthocyanins, carotenoids, and triterpenoids in this aqueous extract was in the range of 1,107-2,861 mg/100 g dry weight. High glucose decreased cells viability and suppressed Bcl-2 mRNA expression. This aqueous extract pretreatments raised 11-42% cell survival and upregulated 20-47% Bcl-2 mRNA expression. High glucose reduced Na+-K+ ATPase activity and mitochondrial membrane potential (MMP). This aqueous extract raised 27-40% Na+-K+ ATPase activity, and 18-51% MMP. High glucose stimulated the generation of total advanced glycative endproducts (AGEs), methylglyoxal, and reactive oxygen species (ROS). This aqueous extract pretreatments lowered total AGEs, methylglyoxal, and ROS levels in the range of 0.38-1.17 folds, 1.7-4.9 nmol/mg protein, and 0.35-1.06 relative fluorescence unit/mg protein. High glucose upregulated mRNA expression of aldose reductase, nuclear factor kappa B, and p38. This aqueous extract pretreatments decreased mRNA expression of these factors in the range of 75-159%, 57-151%, and 54-166%. High glucose downregulated mRNA expression of nuclear factor E2-related factor 2 (Nrf2). This aqueous extract pretreatments increased 12-38% Nrf2 mRNA expression. These results suggested that this aqueous extract might be a potent nutritional supplement to prevent diabetic retinopathy.
URI:	http://dx.doi.org/10.1111/1750-3841.15822 https://www.webofscience.com/wos/woscc/full-record/WOS:000671758000001 https://ir.csmu.edu.tw:8080/handle/310902500/23643
Relation:	JOURNAL OF FOOD SCIENCE ,2021,v86,issue 8, P3686-3697
Appears in Collections:	[中山醫學大學研究成果] 期刊論文

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