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Abstract Title:

Sulforaphane suppresses obesity-related glomerulopathy-induced damage by enhancing autophagy via Nrf2.

Abstract Source:

Life Sci. 2020 Jul 29 ;258:118153. Epub 2020 Jul 29. PMID: 32738361

Abstract Author(s):

Yue Lu, Yixian Zhang, Yan Lou, Wenpeng Cui, Lining Miao

Article Affiliation:

Yue Lu

Abstract:

AIMS: Obesity-related glomerulopathy (ORG) is characterized by glomerulomegaly with or without focal and segmental glomerulosclerosis lesions. Isothiocyanate sulforaphane (SFN) can protect kidneys from ORG-related damages. In this study, we investigated the effects of SFN as a preventive therapy or intervention for ORG to reveal its mechanism of action.

MAIN METHODS: We established a mouse obesity model with preventive SFN or N-acetylcysteine treatment for 2 months. Thereafter, we used nuclear factor erythroid 2-related factor 2-deficient (Nrf2) and wild type mice in our ORG model with SFN treatment. Finally, we generated a corresponding mouse podocyte model in vitro. The body weight, wet weight of perirenal-and peritesticular fat, and urinary albumin/creatinine ratio were assessed. We used periodic acid-Schiff staining and electron microscopy to assess the function of the kidneys and podocytes. In addition, we evaluated the expression of Nrf2 and podocyte-specific proteins by western blotting.

KEY FINDINGS: Treatment with SFN reduced body weight, organ-associated fat weight, and urinary albumin/creatinine ratio in both the preventive treatment and disease intervention regimens. SFN treated mice exhibited higher expression levels of podocyte-specific proteins and better podocyte function. However, treatment with SFN did not affect these parameters in obese Nrf2mice. Light chain 3 of microtubule-associated protein 1-II and metallothionein had higher expression in the wild type than in the Nrf2mice.

SIGNIFICANCE: Treatment with SFN limited ORG-induced damage by enhancing podocyte autophagy via Nrf2.

Study Type : In Vitro Study

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