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Wang Yang,Song Guoying,Liang Dong,Xia Hui,Zhang Huifen,Luo Xian,Deng Qunxian 한국원예학회 2022 Horticulture, Environment, and Biotechnology Vol.63 No.5
Jujube fruits contain high levels of ascorbic acid (AsA). However, the AsA contents of fruits differ significantly in various jujube germplasm resources, and the factors responsible for these differences remain unknown. To explore the metabolic mechanism of AsA accumulation, we investigated the AsA content in fruits at different developmental stages of two jujube species, Ziziphus acidojujuba cv. Yuanxingxiaosuanzao (SZ) and Ziziphus jujuba Mill. cv. Luojiangtiaoyuanzao (LZ). The AsA accumulation pattern in the fruits of the two jujube species was similar during fruit development, and AsA content was negatively correlated with titratable acid. We also analysed the expression patterns of AsA metabolism genes. The results showed that AsA biosynthesis in jujube fruits was mainly related to the L-galactose pathway, as well as the inositol pathway. Furthermore, higher expression levels of genes involved in AsA biosynthesis (GME1, GMP1, GPP, GGP, and MIOX1) and regeneration (MDHAR1 and MDHAR2) were associated with higher AsA concentrations in SZ fruit compared with LZ fruit. In summary, we concluded that more efficient AsA biosynthesis and regeneration was responsible for the higher AsA accumulation in SZ fruit.
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Guojin Gong,Rigetu Zhao,Yuhui Zhu,Jinfeng Yu,Bin Wei,Yan Xu,Zhaoxun Cui,Guoying Liang 대한생리학회-대한약리학회 2021 The Korean Journal of Physiology & Pharmacology Vol.25 No.5
This study was designed to evaluate the gastroprotective activity of cirsilineol in hydrochloric acid (HCl)/ethanol-induced gastric ulcer model. Cirsilineol was administered at the doses of 20 and 40 mg/kg in HCl/ethanol-induced rats. The gastroprotective ability was verified by determining the ulcer score, total acidity, hemoglobin, inflammatory cytokines, lipid peroxides, and enzymatic antioxidants superoxide dismutase (SOD) and catalase (CAT) in gastric tissue and serum biochemical analysis. The results showed a favorable increase in the hemoglobin level, antioxidant enzymes (SOD and CAT), restored electrochemical balance (carbon dioxide & anion gap) while a noticeable decrease in ulcer index, total acidity, lipid peroxides, inflammatory cytokines (interleukin-1 beta [IL-1β], IL-6, and tumor necrosis factor alpha) in rats treated with the cirsilineol. The serum biochemical analysis on liver markers (alkaline phosphatases, alanine aminotransferase, and aspartate aminotransferase), kidney markers (urea, creatinine, albumin, globulin, total protein), and lipid profile (triglyceride, high-density lipoprotein, total cholesterol) were attenuated by cirsilineol treatment in rats. Histopathology showed enhanced gastric protection and preserved the integrity of gastric mucosa upon cirsilineol administration. These results ultimately suggest that cirsilineol has gastroprotective effects that prevent the development of gastric ulcer.
ScienceON
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