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黄秋葵()对高脂高钠饮食喂养大鼠代谢功能障碍的分子对接及保护作用。

Molecular docking and protective effects of okra () against metabolic dysfunction in high-fat, high-sodium diet-fed rats.

机构信息

Department of Nutrition and Food Sciences, National Research Centre, Dokki, Cairo, Egypt.

出版信息

Food Funct. 2024 Apr 2;15(7):3566-3582. doi: 10.1039/d3fo04407f.

Abstract

Okra pods ( L. Moench) have been used as a functional vegetable as they contain polysaccharides, flavonoids, and other bioactive molecules that protect the body from several chronic diseases. The purpose of this study was to look at the involvement of okra constituents (mucilage and flesh) in the prevention of metabolic dysfunctions induced in a rat model by a high-fat, high-salt (HF/NaCl) diet. Okra mucilage was extracted using an ultrasonic method, freeze-dried, characterized using Fourier transform infrared (FTIR) and scanning electron microscopy (SEM), and tested for swelling ratio and radical scavenging activity. Okra flesh (skin and seeds) was separated from pods; characterized using SEM; and tested for dietary fiber content, phenolic profile, and radical scavenging activity. The significance of okra bioactive compounds in inhibiting human salivary amylase, glutamine : fructose-6-phosphate amidotransferase (GFAT), tumor necrosis factor-alpha (TNF-α), and C-reactive protein (CRP) was investigated using molecular docking. Rats were fed an HF/NaCl diet and orally treated daily with freeze-dried okra mucilage or flesh (100 mg per kg body weight) for 8 weeks. Glucose, insulin, inflammatory indicators (CRP, TNF-α, and interleukin 6), oxidative markers (red blood cell lipid peroxidation, glutathione peroxidase, nitric oxide, and superoxide dismutase), lipid profile, estradiol, feces lipids as well as femur and urine calcium were measured. The molecular docking findings showed the interaction of quercetin and chlorogenic acid, which are the most abundant phenolic compounds in okra pods, with the studied proteins, which gives an indication of the mechanism of okra's anti-diabetic, anti-oxidant, and anti-inflammatory effects. Okra mucilage and flesh significantly reduced glucose, insulin, cholesterol, lipid peroxidation, CRP, TNF-α, IL-6, and urine calcium levels while significantly increasing feces lipid and femur calcium levels. The findings suggested that okra mucilage and flesh seem to be promising candidates for protection against metabolic dysfunction.

摘要

秋葵荚(L. Moench)已被用作功能性蔬菜,因为它们含有多糖、类黄酮和其他生物活性分子,可保护身体免受多种慢性疾病的侵害。本研究的目的是研究秋葵成分(黏液和果肉)在预防高脂肪、高盐(HF/NaCl)饮食诱导的大鼠模型代谢功能障碍中的作用。使用超声法提取秋葵黏液,冷冻干燥,用傅里叶变换红外(FTIR)和扫描电子显微镜(SEM)进行表征,并测试其溶胀比和自由基清除活性。从荚果中分离出秋葵果肉(果皮和种子);用 SEM 进行表征;并测试膳食纤维含量、酚类谱和自由基清除活性。使用分子对接研究了秋葵生物活性化合物在抑制人唾液淀粉酶、谷氨酰胺:果糖-6-磷酸酰胺转移酶(GFAT)、肿瘤坏死因子-α(TNF-α)和 C 反应蛋白(CRP)中的作用。大鼠喂食 HF/NaCl 饮食,并每天口服给予冻干秋葵黏液或果肉(100 mg/kg 体重),持续 8 周。测量葡萄糖、胰岛素、炎症指标(CRP、TNF-α 和白细胞介素 6)、氧化标志物(红细胞脂质过氧化、谷胱甘肽过氧化物酶、一氧化氮和超氧化物歧化酶)、脂质谱、雌二醇、粪便脂质以及股骨和尿液钙。分子对接结果表明,秋葵荚中含量最丰富的酚类化合物槲皮素和绿原酸与研究蛋白相互作用,这表明了秋葵具有抗糖尿病、抗氧化和抗炎作用的机制。秋葵黏液和果肉显著降低了葡萄糖、胰岛素、胆固醇、脂质过氧化、CRP、TNF-α、IL-6 和尿钙水平,同时显著增加了粪便脂质和股骨钙水平。研究结果表明,秋葵黏液和果肉似乎是预防代谢功能障碍的有前途的候选物。

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