相关实验视频
Updated: Jun 9, 2025

04:39
Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
Published on: March 17, 2023
1.6K
怀孕期间对甲状腺激素中心敏感度的变化与尿液的变化
Ioannis Ilias1, Charalampos Milionis1, Maria Alexiou1
1Department of Endocrinology, Diabetes and Metabolism, Elena Venizelou Hospital, GR-11521 Athens, Greece.
Medical sciences (Basel, Switzerland)
|October 25, 2024
概括
这项研究使用甲状腺反量基指数 (TFQI) 探索了怀孕期间的中央甲状腺激素敏感性. 摄入量影响了TFQI,特别是在第二个三个月,这表明HPT轴在整个妊娠期间都具有动态调节.
科学领域:
- 内分泌学 在内分泌学.
- 生殖医学 生殖医学
- 营养科学 营养科学
背景情况:
- 对甲状腺激素的中心敏感性,反映了下丘脑-垂体-甲状腺 (HPT) 轴的响应性,在怀孕期间至关重要.
- 虽然甲状腺激素和尿 (UI) 的关系是已知的,但中心敏感性与怀孕期间的UI的联系尚未被探索.
研究的目的:
- 在孕妇中使用甲状腺反量基指数 (TFQI) 评估对甲状腺激素的中心敏感性.
- 评估是否对甲状腺激素的中心敏感性随着妊娠年龄和/或摄入量而变化.
主要方法:
- 1,102名孕妇在三个月和产后提供了血液和尿液样本.
- 测量了TSH,FT4,抗甲状腺过氧化酶抗体和UI;计算了TFQI.
- 统计分析包括基于时间变量的ANOVA和TFQI-UI关系的皮尔森相关性.
主要成果:
- 平均TFQI范围从-0.060 (第二个三个月) 到-0.053 (产后).
- 在第二个三个月观察到TFQI和UI (>250μg/L) 之间的显著正相关性 (r:+0.368,p:0.050).
- 在第一季度 (r: -0.323,p: 0.04) 发现了微弱的负相关性.
结论:
- TFQI有效地反映了对甲状腺激素的中心敏感性,较低的值表明更高的敏感性.
- 摄入量与第二季度的TFQI正相关,这表明营养状况和HPT轴调节之间存在联系.
- 观察到TFQI的变化可能表明整个怀孕期间的动态中央甲状腺激素作用,影响HPT轴的功能.
相关概念视频
Synthesis and Regulation of Thyroid Hormones
4.2K
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...
4.2K
Radiological Investigation I: X-ray and CT
214
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
214
Functions of Thyroid Hormones
2.6K
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...
2.6K
Hormonal Regulation
33.0K
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.
33.0K
Factors Affecting Drug Response: Overview
1.9K
When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
1.9K
Regulation of Hormone Secretion
3.2K
Regulation of hormone secretion is a finely tuned orchestration driven by various types of stimuli, encompassing neural, humoral, and hormonal signals. Environmental cues instigate neural stimuli, where action potentials traverse nerve fibers to reach their designated targets. An illustrative scenario is the body's response to stress, wherein the sympathetic nervous system releases epinephrine from the adrenal glands, inducing the well-known 'fight or flight' reaction.
Humoral...
Humoral...
3.2K

