Activating PPARβ/δ-Mediated Fatty Acid β-Oxidation Mitigates Mitochondrial Dysfunction Co-induced by Environmentally Relevant Levels of Molybdenum and Cadmium in Duck Kidneys.

IF 3.4 3区 生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Jiamei Zhu, Gaohui Nie, Xueyan Dai, Dianyun Wang, ShanXin Li, Caiying Zhang
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Abstract

Cadmium (Cd) and high molybdenum (Mo) pose deleterious effects on health. Prior studies have indicated that exposure to Mo and Cd leads to damage in duck kidneys, but limited studies have explored this damage from the perspective of fatty acid metabolism. In this study, 40 healthy 8-day-old ducks were randomly assigned to four groups and fed a basic diet containing Cd (4 mg/kg Cd) or Mo (100 mg/kg Mo) or both. Kidney tissues were harvested on the 16th week. Results demonstrated that Cd and/or Mo inhibited mitochondrial fatty acid β-oxidation and disrupted mitochondrial dynamics, along with significant suppression of peroxisome proliferator-activated receptor β/δ (PPARβ/δ) protein in duck kidneys. In vitro study, duck renal tubular epithelial cells were exposed for 12 h to either Mo (480 μM Mo), Cd (2.5 μM Cd), and GW0742 (0.3 μM, a potent agonist of PPARβ/δ) alone or in combination. The results demonstrated that Cd and/or Mo led to marked fatty acid oxidation deficiency and mitochondrial dysfunction and that PPARβ/δ protein was involved in the process. Altogether, this study found that activating PPARβ/δ-mediated fatty acid β-oxidation mitigates mitochondrial dysfunction co-induced by Mo and Cd in duck kidneys.

激活PPARβ/δ介导的脂肪酸β氧化可减轻环境相关水平的钼和镉共同诱导的鸭肾线粒体功能障碍
镉(Cd)和高钼(Mo)会对健康造成有害影响。先前的研究表明,接触钼和镉会导致鸭肾受损,但从脂肪酸代谢角度探讨这种损害的研究却很有限。在这项研究中,40 只 8 天大的健康鸭子被随机分配到四个组别,分别喂食含有镉(4 毫克/千克镉)或钼(100 毫克/千克钼)或两者的基本饲料。在第 16 周收获肾脏组织。结果表明,镉和/或钼抑制了线粒体脂肪酸的β-氧化,破坏了线粒体动力学,同时显著抑制了鸭肾中的过氧化物酶体增殖激活受体β/δ(PPARβ/δ)蛋白。在体外研究中,将鸭肾小管上皮细胞单独或同时暴露于 Mo(480 μM Mo)、Cd(2.5 μM Cd)和 GW0742(0.3 μM,一种 PPARβ/δ 的强效激动剂)12 小时。结果表明,镉和/或钼会导致明显的脂肪酸氧化不足和线粒体功能障碍,而 PPARβ/δ 蛋白参与了这一过程。总之,本研究发现,激活 PPARβ/δ 介导的脂肪酸 β 氧化可减轻 Mo 和 Cd 共同诱导的鸭肾线粒体功能障碍。
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来源期刊
Biological Trace Element Research
Biological Trace Element Research 生物-内分泌学与代谢
CiteScore
8.70
自引率
10.30%
发文量
459
审稿时长
2 months
期刊介绍: Biological Trace Element Research provides a much-needed central forum for the emergent, interdisciplinary field of research on the biological, environmental, and biomedical roles of trace elements. Rather than confine itself to biochemistry, the journal emphasizes the integrative aspects of trace metal research in all appropriate fields, publishing human and animal nutritional studies devoted to the fundamental chemistry and biochemistry at issue as well as to the elucidation of the relevant aspects of preventive medicine, epidemiology, clinical chemistry, agriculture, endocrinology, animal science, pharmacology, microbiology, toxicology, virology, marine biology, sensory physiology, developmental biology, and related fields.
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