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Abelmoschus esculentus subfractions improved nephropathy with regulating dipeptidyl peptidase-4 and type 1 glucagon-like peptide receptor in type 2 diabetic rats
Journal of Food and Drug Analysis ( IF 3.6 ) Pub Date : 2019-01-01 , DOI: 10.1016/j.jfda.2018.07.004
Chiung-Huei Peng , Hsing-Chun Lin , Chih-Li Lin , Chau-Jong Wang , Chien-Ning Huang

Abelmoschus esculentus (AE) has been used in traditional medicine to ameliorate hyperglycemia, but its mucilage increased bioassay difficulties. We have obtained a series of AE subfractions. Among them F1 and F2 regulated dipeptidyl peptidase-4 (DPP-4) and type 1 glucagon-like peptide receptor (GLP-1R), the treatment targets for type 2 diabetes. F1, F2 and fraction residues (FR) showed advantage on different aspects, which attenuates insulin resistance and metabolic disorder in vivo, and prevents renal-tubular change in vitro. In the present study, using type 2 diabetes model induced by high fat diet (HFD) and streptozotocin (STZ), we aim to investigate whether AE prevent diabetic nephropathy by regulating the putative markers. The results showed that all the subfractions ameliorated albuminuria and renal hyperfiltration (measured by creatinine clearance rate; CCr) accompanied with diabetes, while F2 acted most promptly and consistently. Histologically AE reduced renal tubular change, fibrosis and fat deposition. F2 and FR exerted significant effects to decrease DPP-4 while increase GLP-1R. Although all the subfractions were effective to reduce oxidative stress, only F2 acted on kidneys specifically. In conclusion, we have demonstrated AE has benefits to regulate DPP-4 and GLP-1R, to reduce oxidative stress and renal fibrosis, with resultant to improve renal function and prevent diabetic renal damage. Taken together, F2 could be more promising to be developed as adjuvant for diabetic nephropathy.

中文翻译:

Abelmoschus esculentus 亚组分通过调节二肽基肽酶 4 和 1 型胰高血糖素样肽受体改善 2 型糖尿病大鼠肾病

Abelmoschus esculentus (AE) 已在传统医学中用于改善高血糖症,但其粘液增加了生物测定的难度。我们已经获得了一系列 AE 子分数。其中 F1 和 F2 调节二肽基肽酶 4 (DPP-4) 和 1 型胰高血糖素样肽受体 (GLP-1R),它们是 2 型糖尿病的治疗靶点。F1、F2和部分残基(FR)在不同方面表现出优势,可减轻体内胰岛素抵抗和代谢紊乱,并防止体外肾小管变化。在本研究中,我们使用高脂饮食 (HFD) 和链脲佐菌素 (STZ) 诱导的 2 型糖尿病模型,旨在研究 AE 是否通过调节推定的标志物来预防糖尿病肾病。结果表明,所有亚组分均能改善伴有糖尿病的白蛋白尿和肾高滤过(以肌酐清除率;CCr 衡量),而 F2 的作用最为迅速和一致。组织学上 AE 减少了肾小管变化、纤维化和脂肪沉积。F2和FR在降低DPP-4的同时增加GLP-1R的作用显着。尽管所有亚组分均能有效降低氧化应激,但只有 F2 特异性作用于肾脏。总之,我们已经证明 AE 具有调节 DPP-4 和 GLP-1R、减少氧化应激和肾纤维化的益处,从而改善肾功能和预防糖尿病肾损伤。综上所述,F2 更有希望被开发为糖尿病肾病的佐剂。而 F2 的行动最为迅速和一致。组织学上 AE 减少了肾小管变化、纤维化和脂肪沉积。F2和FR在降低DPP-4的同时增加GLP-1R的作用显着。尽管所有亚组分均能有效降低氧化应激,但只有 F2 特异性作用于肾脏。总之,我们已经证明 AE 具有调节 DPP-4 和 GLP-1R、减少氧化应激和肾纤维化的益处,从而改善肾功能和预防糖尿病肾损伤。综上所述,F2 更有希望被开发为糖尿病肾病的佐剂。而 F2 的行动最为迅速和一致。组织学上 AE 减少了肾小管变化、纤维化和脂肪沉积。F2和FR在降低DPP-4的同时增加GLP-1R的作用显着。尽管所有亚组分均能有效降低氧化应激,但只有 F2 特异性作用于肾脏。总之,我们已经证明 AE 具有调节 DPP-4 和 GLP-1R、减少氧化应激和肾纤维化的益处,从而改善肾功能和预防糖尿病肾损伤。综上所述,F2 更有希望被开发为糖尿病肾病的佐剂。尽管所有亚组分均能有效降低氧化应激,但只有 F2 特异性作用于肾脏。总之,我们已经证明 AE 具有调节 DPP-4 和 GLP-1R、减少氧化应激和肾纤维化的益处,从而改善肾功能和预防糖尿病肾损伤。综上所述,F2 更有希望被开发为糖尿病肾病的佐剂。尽管所有亚组分均能有效降低氧化应激,但只有 F2 特异性作用于肾脏。总之,我们已经证明 AE 具有调节 DPP-4 和 GLP-1R、减少氧化应激和肾纤维化的益处,从而改善肾功能和预防糖尿病肾损伤。综上所述,F2 更有希望被开发为糖尿病肾病的佐剂。
更新日期:2019-01-01
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