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Related Concept Videos

Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor, and heat...
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

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 lactation.

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Related Experiment Video

Updated: May 27, 2026

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function
04:05

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function

Published on: October 6, 2023

Thyroid function in different psychiatric disorders.

G C Boral1, A B Ghosh, S K Pal

  • 1University College of Medicine, University of Calcutta.

Indian Journal of Psychiatry
|November 8, 2011
PubMed
Summary
This summary is machine-generated.

Thyroid function tests revealed hypothyroidism in depression and schizophrenia patients. Manic patients exhibited slightly elevated thyroid hormone levels compared to healthy individuals, indicating distinct thyroid profiles across these psychiatric conditions.

Related Experiment Videos

Last Updated: May 27, 2026

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function
04:05

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function

Published on: October 6, 2023

Area of Science:

  • Endocrinology
  • Psychiatry
  • Neuroscience

Background:

  • Thyroid dysfunction is linked to various mental health disorders.
  • Understanding thyroid hormone levels in psychiatric conditions is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate thyroid function in patients with depression, mania, and schizophrenia.
  • To compare thyroid hormone levels (T3, T4, TSH) between psychiatric patients and a healthy control group.

Main Methods:

  • Estimation of triiodothyronine (T3), thyroxine (T4), and Thyroid Stimulating Hormone (TSH) levels.
  • Comparison of thyroid hormone levels in 31 patients each of depression, mania, and schizophrenia against a matched control group.

Main Results:

  • Depressive and schizophrenic patients displayed subclinical or chemical hypothyroidism.
  • Manic patients showed slightly higher T3 and T4 levels compared to the normal control group.

Conclusions:

  • Thyroid function abnormalities are associated with depression and schizophrenia.
  • Distinct thyroid hormone profiles are observed in manic patients compared to controls.
  • These findings suggest a potential role for thyroid dysfunction in the pathophysiology of these psychiatric disorders.