由GNIH诱导的线粒体功能障碍导致甲状腺毛囊细胞的氧化应激和亡,导致甲状腺功能低下
Ke Peng1, Chengcheng Liu1, Hongyu Zhu1
1College of Animal Science and Technology, Guangxi University, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Daxue Road No.100, Nanning, Guangxi Nanning, R.P. China, 530004.
Free radical biology & medicine
|January 22, 2026
概括
甲状腺激素抑制激素 (GnIH) 通过损害甲状腺细胞,直接减少猪的甲状腺激素合成. 这一发现揭示了GNIH作为甲状腺功能的新型调节剂和甲状腺疾病的潜在治疗点.
科学领域:
- 神经内分泌学神经内分泌学
- 甲状腺学 甲状腺学
- 生殖生物学 生殖生物学
背景情况:
- 甲状腺疾病显著影响动物的新陈代谢,生长和繁殖.
- 激素抑制性激素 (GnIH) 调节生殖,并与不孕症和青春期异常有关,这表明与甲状腺功能有关.
- 在调节甲状腺激素 (TH) 合成和下丘脑-垂体-甲状腺 (HPT) 轴中GNIH的确切作用尚不清楚.
研究的目的:
- 研究GNIH对雌性小猪甲状腺激素合成的外围影响.
- 阐明GNIH影响甲状腺功能的机制.
- 探索GNIH作为HPT和下丘脑-垂体-淋巴结核 (HPG) 轴的整合性调节者的潜力.
主要方法:
- 用猪作为神经内分泌研究的翻译模型.
- 通过非向代谢分析,通过腹膜内注射GNIH,并通过非向代谢分析血清甲状腺素水平.
- 进行了局部化和药理学分析,以评估GNIH对甲状腺的直接影响,包括对甲状腺毛囊上皮细胞的体内和体外研究.
主要成果:
- 慢性GNIH的使用显著降低了小猪的血清甲状腺素水平.
- 发现GNIH在甲状腺中直接抑制甲状腺激素合成,导致循环TH水平降低,并激活HPT轴负反.
- GnIH破坏了线粒体功能,诱导了甲状腺毛囊上皮细胞的亡和氧化应激,并抑制了增殖,最终导致甲状腺功能低下.
结论:
- GnIH直接抑制甲状腺激素的合成,使甲状腺成为主要的外周点.
- 该机制涉及GNIH诱导的线粒体功能障碍和甲状腺毛囊上皮细胞的亡,导致甲状腺功能低下.
- GnIH被确定为甲状腺功能的新型神经内分泌调节剂,对针对甲状腺疾病的治疗策略有潜在的影响.
更多相关视频
相关概念视频
01:30Apoptosis
14.2K
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
14.2K
02:59Animal Mitochondrial Genetics
9.0K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
9.0K
02:19Export of Mitochondrial and Chloroplast Genes
4.1K
A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
4.1K
03:14Oxidation Numbers
42.3K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.3K
03:11Oxidation-Reduction Reactions
75.2K
Oxidation–Reduction Reactions
75.2K
02:16Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
15.4K
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
15.4K