甲状腺ホルモン抵抗症候群の原因となる新規THRB変異の同定
Jing Yang1,1, Chuan Wang2, Li Quan1,1
1Prevention and Treatment of High Incidence Diseases in Central Asia State Key Laboratory of Pathogenesis Urumqi China State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, China.
Archives of endocrinology and metabolism
|February 6, 2026
まとめ
甲状腺ホルモン抵抗症候群(RTHS)はまれな遺伝性疾患です。この症例報告では、RTHS患者で同定された新規THRB遺伝子変異(c.938T>C: p.M313T)について詳述しています。
科学分野:
- 内分泌学
- 遺伝学
- 分子生物学
背景:
- 甲状腺ホルモン抵抗症候群(RTHS)はまれな遺伝性疾患である。
- 甲状腺ホルモン受容体ベータ(THRB)遺伝子の変異に起因し、甲状腺ホルモンの作用を妨げる。
- RTHSはしばしば甲状腺機能亢進症と誤診され、不適切な治療につながる。
研究 の 目的:
- 57歳中国人男性におけるRTHSのまれな症例を報告する。
- RTHSに関連するTHRB遺伝子の新規変異を同定し、特徴づける。
- RTHSの正確な診断と理解の重要性を強調する。
主な方法:
- 臨床症例提示と臨床検査。
- 下垂体 MRIによる詳細な画像診断。
- THRB遺伝子変異を同定するための遺伝子検査。
主要な成果:
- 患者は動悸と手の震えを呈した。
- 甲状腺刺激ホルモン(TSH)は正常で、血清甲状腺ホルモンレベルは上昇していた。
- THRB遺伝子において新規のヘテロ接合性点突然変異、c.938T>C: p.M313Tが同定された。
結論:
- 本症例報告は、RTHSを引き起こす以前に報告されていないTHRB変異について記述する。
- 誤診や不適切な治療を避けるためには、正確な診断が不可欠である。
- THRB変異を有する患者におけるRTHSの臨床症状と管理を理解することが不可欠である。
関連する概念動画
Functions of Thyroid Hormones
5.6K
The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
5.6K
Synthesis and Regulation of Thyroid Hormones
7.9K
Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
7.9K
Types of Hormones
83.7K
Hormones can be classified into three main types based on their chemical structures: steroids, peptides, and amines. Their actions are mediated by the specific receptors they bind to on target cells.
83.7K
Mutations
94.5K
Overview
94.5K
Viral Mutations
39.9K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
39.9K
Hormonal Regulation
36.1K
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
36.1K


