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相关概念视频

Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

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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...
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Functions of Thyroid Hormones01:18

Functions of Thyroid Hormones

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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...
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Major Hormones and Their Functions01:27

Major Hormones and Their Functions

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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
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The Thyroid Gland01:23

The Thyroid Gland

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
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Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

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Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
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相关实验视频

Updated: Jun 13, 2025

Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing
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在甲状腺功能障碍中循环勒丁水平:系统性审查和元分析.

Shanshan Liu1,2,3, Jun Ma1,2,3, Leyuan Zhang1,2,3

  • 1The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu, 730000, China.

BMC endocrine disorders
|June 6, 2025
PubMed
概括

在甲状腺功能低下症中,循环勒丁水平显著升高,但在甲状腺功能过高症中却没有升高. 在甲状腺功能障碍时,瘦素可能由甲状腺刺激激素 (TSH) 和三甲状腺素 (T3) 直接调节.

关键词:
勒普丁是一种激素.进行元分析分析.甲状腺功能障碍 甲状腺功能障碍甲状腺激素是甲状腺激素的一种.

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科学领域:

  • 内分泌学 在内分泌学.
  • 代谢过程中的代谢.

背景情况:

  • 莱普调节能量平衡,类似于甲状腺激素 (TH).
  • 甲状腺功能障碍 (TD) 可能会影响瘦素水平.
  • 了解这种关系对于代谢健康至关重要.

研究的目的:

  • 在患有甲状腺功能障碍的患者中研究循环勒丁水平.
  • 探索在TD中瘦素和甲状腺激素水平之间的关联.

主要方法:

  • 电子数据库的系统审查和元分析 (PubMed,Embase,Cochrane图书馆,科学网络).
  • 包括38项研究,涉及4295名受试者 (甲状腺功能低下症,甲状腺功能过强症,甲状腺功能良好控制).
  • 使用随机效应模型计算的集成标准化平均差异 (SMD).

主要成果:

  • 在甲状腺功能低下症 (SMD = 0.71) 中,勒丁水平显著高于甲状腺功能低下症 (SMD = -0.03),而在甲状腺功能过强症 (SMD = -0.03) 中没有显著变化.
  • 亚组分析证实了明显和亚临床甲状腺功能低下症的升高勒素.
  • 在TD中,瘦素与TSH呈正相关性 (r=0.19),与T3呈负相关性 (r=-0.40).

结论:

  • 在甲状腺功能低下症中,循环勒丁水平显著升高,独立于BMI.
  • 在甲状腺功能障碍症中,瘦素水平没有显著改变.
  • 在TD中,瘦素调节可能受到TSH和T3水平的直接影响.