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巴西红蜂胶可减轻5/6肾切除模型中的高血压和肾损伤。

Brazilian red propolis attenuates hypertension and renal damage in 5/6 renal ablation model.

作者信息

Teles Flávio, da Silva Tarcilo Machado, da Cruz Júnior Francisco Pessoa, Honorato Vitor Hugo, de Oliveira Costa Henrique, Barbosa Ana Paula Fernandes, de Oliveira Sabrina Gomes, Porfírio Zenaldo, Libório Alexandre Braga, Borges Raquel Lerner, Fanelli Camilla

机构信息

Renal Division, Department of Clinical Medicine, Faculty of Medicine, State University of Health Sciences, Alagoas, Brazil.

Faculty of Medicine, Federal University, Ceará, Brazil.

出版信息

PLoS One. 2015 Jan 21;10(1):e0116535. doi: 10.1371/journal.pone.0116535. eCollection 2015.

Abstract

The pathogenic role of inflammation and oxidative stress in chronic kidney disease (CKD) is well known. Anti-inflammatories and antioxidant drugs has demonstrated significant renoprotection in experimental nephropathies. Moreover, the inclusion of natural antioxidants derived from food and herbal extracts (such as polyphenols, curcumin and lycopene) as an adjuvant therapy for slowing CKD progression has been largely tested. Brazilian propolis is a honeybee product, whose anti-inflammatory, antimicrobial and antioxidant effects have been widely shown in models of sepsis, cancer, skin irritation and liver fibrosis. Furthermore, previous studies demonstrated that this compound promotes vasodilation and reduces hypertension. However, potential renoprotective effects of propolis in CKD have never been investigated. The aim of this study was to evaluate the effects of a subtype of Brazilian propolis, the Red Propolis (RP), in the 5/6 renal ablation model (Nx). Adult male Wistar rats underwent Nx and were divided into untreated (Nx) and RP-treated (Nx+RP) groups, after 30 days of surgery; when rats already exhibited marked hypertension and proteinuria. Animals were observed for 90 days from the surgery day, when Nx+RP group showed significant reduction of hypertension, proteinuria, serum creatinine retention, glomerulosclerosis, renal macrophage infiltration and oxidative stress, compared to age-matched untreated Nx rats, which worsened progressively over time. In conclusion, RP treatment attenuated hypertension and structural renal damage in Nx model. Reduction of renal inflammation and oxidative stress could be a plausible mechanism to explain this renoprotection.

摘要

炎症和氧化应激在慢性肾脏病(CKD)中的致病作用已广为人知。抗炎药和抗氧化药物在实验性肾病中已显示出显著的肾脏保护作用。此外,将源自食物和草药提取物的天然抗氧化剂(如多酚、姜黄素和番茄红素)作为减缓CKD进展的辅助治疗方法已得到大量测试。巴西蜂胶是一种蜜蜂产品,其抗炎、抗菌和抗氧化作用已在脓毒症、癌症、皮肤刺激和肝纤维化模型中广泛展现。此外,先前的研究表明,这种化合物可促进血管舒张并降低高血压。然而,蜂胶在CKD中的潜在肾脏保护作用从未被研究过。本研究的目的是评估巴西蜂胶的一种亚型——红蜂胶(RP)在5/6肾切除模型(Nx)中的作用。成年雄性Wistar大鼠接受Nx手术,术后30天分为未治疗组(Nx)和RP治疗组(Nx+RP);此时大鼠已出现明显的高血压和蛋白尿。从手术日起观察动物90天,与年龄匹配的未治疗Nx大鼠相比,Nx+RP组的高血压、蛋白尿、血清肌酐潴留、肾小球硬化、肾巨噬细胞浸润和氧化应激显著降低,而未治疗的Nx大鼠随时间推移病情逐渐恶化。总之,RP治疗减轻了Nx模型中的高血压和肾脏结构损伤。肾脏炎症和氧化应激的减轻可能是解释这种肾脏保护作用的一个合理机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0cb/4301812/94ce66537cd7/pone.0116535.g001.jpg

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