Proteomic analysis of toxic effects of short-term cadmium exposure on goat livers.

IF 2.2 4区 医学 Q3 TOXICOLOGY Toxicology Research Pub Date : 2024-10-07 eCollection Date: 2024-10-01 DOI:10.1093/toxres/tfae162
Guangyang Liu, Xiaoyun Shen, Yuanfeng Li
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Abstract

Food safety is closely related to environmental pollution. It is worth noting that the long-term accumulation of Cd, a toxic heavy metal, in animals may pose a threat to human health through food chain. Previous studies have found that Cd exposure may cause liver metabolic disorders of black goats, but the mechanism of its impact on liver proteome of goats has not been widely studied. Therefore, in this study, ten male goats (Nubian black goat × native black goat) were exposed to Cd via drinking water containing CdCl2 (20 mg Cd·kg - 1·BW) for 30 days (five male goats per group). Blood physiology and liver antioxidant indices in black goats were determined and differentially expressed proteins (DEPs) in the livers of Cd-exposed goats were profiled by using TMT-labelled proteomics. It was found that plasma Hb and RBC levels as well as PCV values were decreased, liver SOD, GSH-Px, T-AOC and CAT levels were decreased, and MDA level was increased in Cd-treated goats, and 630 DEPs (up 326, down 304) in the livers of Cd-treated goats. Proteomics analysis revealed that Cd exposure affected glutathione metabolism and drug metabolism-cytochrome P450. We identified GP×2, GSTM3, and TBXAS1 as potential protein markers of early Cd toxicity in goats. This study provided theoretical basis for early diagnosis of Cd poisoning in goats.

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短期镉暴露对山羊肝脏毒性效应的蛋白质组分析
食品安全与环境污染密切相关。值得注意的是,有毒重金属镉在动物体内的长期积累可能会通过食物链对人类健康造成威胁。以往的研究发现,接触镉可能导致黑山羊肝脏代谢紊乱,但镉对黑山羊肝脏蛋白质组的影响机制尚未得到广泛研究。因此,在本研究中,十只雄性山羊(努比亚黑山羊×本地黑山羊)通过饮用含氯化镉(20 毫克镉-千克-1-体重)的水暴露于镉,为期 30 天(每组五只雄性山羊)。采用 TMT 标记的蛋白质组学方法测定了黑山羊的血液生理指标和肝脏抗氧化指标,并分析了镉暴露山羊肝脏中的差异表达蛋白(DEPs)。结果发现,经 Cd 处理的山羊血浆 Hb 和 RBC 水平以及 PCV 值下降,肝脏 SOD、GSH-Px、T-AOC 和 CAT 水平下降,MDA 水平升高,经 Cd 处理的山羊肝脏中有 630 个 DEPs(上升 326 个,下降 304 个)。蛋白质组学分析表明,镉暴露影响了谷胱甘肽代谢和药物代谢-细胞色素 P450。我们发现 GP×2、GSTM3 和 TBXAS1 是山羊早期镉中毒的潜在蛋白质标记物。这项研究为山羊镉中毒的早期诊断提供了理论依据。
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来源期刊
Toxicology Research
Toxicology Research TOXICOLOGY-
CiteScore
3.60
自引率
0.00%
发文量
82
期刊介绍: A multi-disciplinary journal covering the best research in both fundamental and applied aspects of toxicology
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