Omega 3 Fatty Acids Attenuate the Acute Kidney Injury to CKD Transition and Renal Fibrosis: Identification of Antifibrotic Metabolites.
Kai Tokumaru, Tadashi Imafuku, Takao Satoh, Tomoaki Inazumi, Shu Hirashima, Ayano Nishinoiri, Taisei Nagasaki, Hitoshi Maeda, Yukihiko Sugimoto, Motoko Tanaka, Kazutaka Matsushita, Toru Maruyama, Hiroshi Watanabe
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引用次数: 0
欧米茄 3 脂肪酸可减轻急性肾损伤向慢性肾功能衰竭的转变和肾纤维化:抗纤维化代谢物的鉴定。
背景:AKI 是导致慢性肾脏病的一个既定风险因素。最近,ω-3 多不饱和脂肪酸(ω3PUFAs)的肾保护作用引起了人们的关注。本研究旨在评估ω3PUFAs对AKI向CKD转变的影响,并鉴定肾组织中的脂肪酸活性代谢产物:方法:用富含ω3PUFAs的亚麻籽油(Lin组)或低ω3PUFAs的大豆油(Soy组)喂养两种从AKI到CKD的小鼠模型(7周,雄性)和单侧输尿管梗阻(UUO)诱发肾纤维化的小鼠模型(11周,雄性)。用液相色谱-质谱法测量小鼠肾脏脂肪酸和代谢物的组成。大鼠肾脏成纤维细胞(NRK-49F 细胞)用于体外研究:结果:在双侧肾脏缺血再灌注(IR)35 分钟后的第 14 天,观察到 Lin 组的存活率明显高于 Soy 组。在 30 分钟双侧肾脏 IR 模型(AKI 至 CKD 模型)中,胰岛素组的肾组织损伤和纤维化有所减轻。此外,在 UUO 肾纤维化模型中也观察到了霖果组的抗纤维化作用。在这两种小鼠模型中,用 Lin 饲喂的小鼠肾组织中二十碳五烯酸(EPA)及其代谢物的水平显著升高。用 EPA 及其代谢物 18-hydroxyeicosapentaenoic acid(18-HEPE)、17,18-epoxyeicosatetraenoic acid(17,18-EpETE)和 17,18-dihydroxyeicosatetraenoic acid(17,18-diHETE)培养的 NRK-49F 会抑制 TGF-β1 刺激的 α 平滑肌肌动蛋白的表达。在有一种参与 EPA 代谢的细胞色素 P450 抑制剂存在的情况下,这些效应被抑制。结论:ω3PUFAs 可防止 AKI 转化为 CKD 和肾纤维化。此外,研究还发现 EPA 代谢产物 18-HEPE、17,18-EpETE 和 17,18-diHETE 具有抗纤维化作用。
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