时间标签：数据日期 2026-11-01 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/31–2026/11/01 ｜ 情报发生日期 2026-11-01
证据级别：摘要级。本条依据 PubMed 结构化摘要与元数据撰写，付费墙全文未获取、未逐节核验，本站未做任何数值推算补全。
研究问题
Neonicotinoid insecticides, such as thiamethoxam (TMX), are widely used in agriculture, but concerns over their potential hepatotoxicity, particularly in the development of metabolic dysfunction-associated fatty liver disease (MASLD),…
方法
This study investigates the role of hepatic nicotinamide N-methyltransferase (NNMT) in TMX-induced liver damage, focusing on its impact on lipid metabolism and liver injury.
核心结论
Neonicotinoid insecticides, such as thiamethoxam (TMX), are widely used in agriculture, but concerns over their potential hepatotoxicity, particularly in the development of metabolic dysfunction-associated fatty liver disease (MASLD), persist.；Chronic TMX exposure upregulated NNMT expression in the liver and primary hepatocytes, leading to increased lipid accumulation and oxidative stress.；Depletion of hepatic NNMT in liver-specific knockout (LKO) mice significantly attenuated TMX-induced hepatic steatosis, hyperlipidemia, and liver injury.；The protective effects were associated with suppressed de novo lipogenesis, reduced oxidative stress, and alleviated endoplasmic reticulum (ER) stress, suggesting a critical role of NNMT in these processes.
局限
（原文未给出可直接抽取的对应表述）
对本项目的价值
临床前机制证据，需评估物种外推与剂量可行性：代谢—器官轴是干预安全性的主要约束面。 ｜ 价值分 1.0/5（★☆☆☆☆）
全文来源
未取到全文 → 本卡为摘要级解读，未核验全文
原文题录
- 英文标题：Hepatic Nnmt Deficiency Alleviates Thiamethoxam-Induced Hepatic Steatosis Via AMPK Activation.
- 期刊与标识：Phenomics (Cham, Switzerland) · PMID 42952933 · DOI 10.1007/s43657-025-00263-4
B 级证据分级：B 级（同行评议临床前研究，主要为动物模型）
本文核心结论来自动物模型或体外细胞学，属临床前证据，不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义，与人类临床结局之间仍有距离。
关于本文的文献来源：本站依据 IMA 知识库「五刊监控·深度文献卡片」（SOP §4.2 摘要级）撰写，依据期刊公开摘要与 PubMed 元数据；付费墙全文未获取之处已标注「待补全文」，未做任何数值推算补全。