长时间暴露于寒冷会对大西洋鱼 (Salmo salar) 的新陈代谢和肝功能产生负面影响
Isis Rojas1, Albert Caballero-Solares1, Émile Vadboncoeur1
1Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, NL A1C 5S7, Canada.
Biology
|July 26, 2024
概括
冷水在大西洋鱼中引发脂肪肝疾病 (FLD),导致显著的脂质变化和基因失调. 本研究确定了FLD的关键生物标志物,这些生物标志物对于管理这种经济重要物种至关重要.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 鱼类生理学 鱼类生理学
- 疾病病理学 疾病病理学
背景情况:
- 冬季综合症 (WS/WD) 导致大西洋鱼在海中的大规模死亡.
- 脂肪肝疾病 (FLD) 是WS/WD的临床症状,影响鱼类的健康和生存.
研究的目的:
- 为了研究不同WS/WD症状的大西洋鱼的肝脂质概况和基因表达.
- 为了确定FLD的生物标志物,并了解其与寒冷暴露的关系.
主要方法:
- 在3°C下对鱼的肝脂类和脂肪酸进行分析.
- 对FLD的34个分子标记物的转录表达的测量.
- 分子数据与疾病进展特征的相关性.
主要成果:
- 患有FLD症状的鱼在总脂质和三糖醇 (TAG) 中增加了~50%.
- 34个基因中的32个基因在有症状的鱼类中失调.
- TAG水平与炎症和肝细胞指数相关,但与脂质代谢和生长基因相反.
结论:
- 长时间暴露于寒冷是大西洋鱼中FLD的强有力的触发因素.
- 确定了FLD的几种生物标志物,包括*saa5*,可以显著区分疾病阶段.
- 这些发现对于在水产养殖中管理WS/WD和FLD至关重要.
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