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Inhibition of tumor necrosis factor-α enhanced the antifibrotic effect of empagliflozin in an animal model with renal insulin resistance.
Molecular and Cellular Biochemistry ( IF 4.3 ) Pub Date : 2020-01-13 , DOI: 10.1007/s11010-020-03686-x
Hoda E Mohamed 1 , Mervat E Asker 1 , Mohammed M Keshawy 2 , Rehab A Hasan 3 , Yasmin K Mahmoud 1
Affiliation  

Insulin resistance (IR) has emerged as one of the main risk factors for renal fibrosis (RF) that represents a common stage in almost all chronic kidney disease. The present study aims to investigate the inhibitory effect of empagliflozin (EMPA "a sodium-glucose co-transporter 2 inhibitor") and infliximab [IFX "a tumor necrosis factor-α (TNF-α) antibody"] on RF in rats with induced IR. IR was induced by adding 10% fructose in drinking water for 20 weeks. Thereafter, fructose-induced IR rats were concurrently treated with EMPA (30 mg/kg), IFX (1 dose 5 mg/kg), or EMPA + IFX for 4 weeks, in addition to IR control group (received 10% fructose in water) and normal control (NC) group. Rats with IR displayed hyperglycemia, deterioration in kidney functions, glomerulosclerosis, and collagen fiber deposition in renal tissues as compared to NC. This was associated with downregulation of the renal sirtuin 1 (Sirt 1) expression along with higher renal tissue TNF-α and transforming growth factor-β1 (TGF-β1) levels. Both EMPA and IFX significantly modulated the aforementioned fibrotic cytokines, upregulated the renal Sirt 1 expression, and attenuated RF compared to IR control group. Of note, IFX effect was superior to that of EMPA. However, the combination of EMPA and IFX alleviated RF to a greater extent surpassing the monotherapy. This may be attributed to the further upregulation of renal Sirt 1 in addition to the downregulation of fibrotic cytokines. These findings suggest that the combination of EMPA and IFX offers additional benefits and may represent a promising therapeutic option for RF.

中文翻译:

肿瘤坏死因子-α的抑制增强了恩格列净在肾胰岛素抵抗动物模型中的抗纤维化作用。

胰岛素抵抗 (IR) 已成为肾纤维化 (RF) 的主要危险因素之一,它代表了几乎所有慢性肾病的常见阶段。本研究旨在探讨恩格列净(EMPA“一种钠-葡萄糖协同转运蛋白2抑制剂”)和英夫利昔单抗[IFX“一种肿瘤坏死因子-α(TNF-α)抗体”]对大鼠RF的抑制作用。红外。通过在饮用水中添加 10% 果糖 20 周来诱导 IR。此后,除了 IR 对照组(在水中接受 10% 果糖) 和正常对照组 (NC) 组。患有 IR 的大鼠表现出高血糖、肾功能恶化、肾小球硬化、与 NC 相比,肾组织中的胶原纤维沉积。这与肾沉默调节蛋白 1 (Sirt 1) 表达的下调以及较高的肾组织 TNF-α 和转化生长因子-β1 (TGF-β1) 水平有关。与 IR 对照组相比,EMPA 和 IFX 均显着调节上述纤维化细胞因子,上调肾脏 Sirt 1 表达,并减弱 RF。值得注意的是,IFX 效果优于 EMPA。然而,EMPA 和 IFX 的组合对 RF 的缓解程度超过了单一疗法。这可能归因于除了纤维化细胞因子的下调外,肾脏 Sirt 1 的进一步上调。这些研究结果表明,EMPA 和 IFX 的组合提供了额外的好处,并可能代表一种有前途的 RF 治疗选择。这与肾沉默调节蛋白 1 (Sirt 1) 表达的下调以及较高的肾组织 TNF-α 和转化生长因子-β1 (TGF-β1) 水平有关。与 IR 对照组相比,EMPA 和 IFX 均显着调节上述纤维化细胞因子,上调肾脏 Sirt 1 表达,并减弱 RF。值得注意的是,IFX 效果优于 EMPA。然而,EMPA 和 IFX 的组合对 RF 的缓解程度超过了单一疗法。这可能归因于除了纤维化细胞因子的下调外,肾脏 Sirt 1 的进一步上调。这些研究结果表明,EMPA 和 IFX 的组合提供了额外的好处,并可能代表一种有前途的 RF 治疗选择。这与肾沉默调节蛋白 1 (Sirt 1) 表达的下调以及较高的肾组织 TNF-α 和转化生长因子-β1 (TGF-β1) 水平有关。与 IR 对照组相比,EMPA 和 IFX 均显着调节上述纤维化细胞因子,上调肾脏 Sirt 1 表达,并减弱 RF。值得注意的是,IFX 效果优于 EMPA。然而,EMPA 和 IFX 的组合对 RF 的缓解程度超过了单一疗法。这可能归因于除了纤维化细胞因子的下调外,肾脏 Sirt 1 的进一步上调。这些研究结果表明,EMPA 和 IFX 的组合提供了额外的好处,并可能代表一种有前途的 RF 治疗选择。
更新日期:2020-01-13
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