标题:Grape seed proanthocyanidins protect against streptozotocin-induced diabetic nephropathy by attenuating endoplasmic reticulum stress-induced apoptosis
作者:Gao, Zhaoli; Liu, Guangyi; Hu, Zhao; Shi, Weiwei; Chen, Binbin; Zou, Peimei; Li, Xianhua
作者机构:[Gao, Zhaoli] Shandong Univ, Qi Lu Hosp Qing Dao, Dept Nephrol, Qingdao 266000, Shandong, Peoples R China.; [Liu, Guangyi; Hu, Zhao; Li, Xianhua] Sh 更多
通讯作者:Li, XH
通讯作者地址:[Li, XH]Shandong Univ, Qi Lu Hosp, Dept Nephrol, 107 Wenhua Xi Rd, Jinan 250012, Shandong, Peoples R China.
来源:MOLECULAR MEDICINE REPORTS
出版年:2018
卷:18
期:2
页码:1447-1454
DOI:10.3892/mmr.2018.9140
关键词:grape seed proanthocyanidins; streptozotocin; diabetic nephropathy;; endoplasmic reticulum stress; apoptosis
摘要:Diabetic nephropathy (DN) is by far the most common cause of end-stage renal disease (ESRD) in industrial countries, accounting for similar to 45% of all new ESRD cases in the United States. Grape seed proanthocyanidin extracts (GSPE) are powerful antioxidants, with an antioxidant ability 50-fold greater than that of vitamin E and 20-fold greater than that of vitamin C. The present study investigated whether GSPE can protect against streptozotocin (STZ)-induced DN and aimed to elucidate a possible mechanism. Male Sprague Dawley rats were randomly divided into three groups: Control group (N), diabetes mellitus group (DM) injected with 40 mg/kg STZ, and the GSPE treatment group (intragastric administration of 250 mg/kg/day GSPE for 16 weeks after diabetes was induced in the rats). Blood and kidney samples were collected after treatment. The renal pathological changes were determined with periodic acid-Schiff (PAS) staining, while the protein expression levels of glucose-regulated protein 78 (GRP78), phosphorylated-extracellular signal-regulated kinase (p-ERK) and Caspase-12 were determined by western blotting and immunohistochemical staining. Apoptosis was determined with a terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. Compared with the DM group, the GSPE group had no significant changes in the blood urea nitrogen (BUN) level and serum creatinine (Scr) level, but showed a significant decline in the renal index (RI) level and 24-h urinary albumin level (P<0.05). The histopathology results indicated very little pathological damage in the GSPE group. Compared with the DM group, the GSPE group had a significantly reduced number of TUNEL-positive cells (P<0.05), and the GSPE group had an obvious reduction in the protein expression of GRP78, p-ERK, and Caspase-12 (P<0.05). In this study, the results indicated that GSPE can protect renal function and attenuate endoplasmic reticulum stress-induced apoptosis via the Caspase-12 pathway in STZ-induced DN.
收录类别:SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049585238&doi=10.3892%2fmmr.2018.9140&partnerID=40&md5=decb8b4369b39e091c0cef950b6209e3
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