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Related Concept Videos

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...
Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

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 iodine is then...
Functions of Thyroid Hormones01:18

Functions of Thyroid Hormones

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...
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...
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...

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Related Experiment Video

Updated: Jul 16, 2026

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants
06:39

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants

Published on: June 13, 2021

Antenatal thyroid correlates of postpartum depression.

Cort A Pedersen1, Jacqueline L Johnson, Susan Silva

  • 1Department of Psychiatry CB# 7160, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7160, USA. Cort_Pedersen@med.unc.edu <Cort_Pedersen@med.unc.edu>

Psychoneuroendocrinology
|March 10, 2007
PubMed
Summary

Lower thyroid hormone levels during pregnancy are linked to higher postpartum depression scores. Women with lower antenatal thyroxine concentrations may face increased risk for these mood disturbances.

Related Experiment Videos

Last Updated: Jul 16, 2026

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants
06:39

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants

Published on: June 13, 2021

Area of Science:

  • Endocrinology
  • Perinatal Psychiatry
  • Reproductive Health

Background:

  • Previous research indicated a link between thyroid status in late pregnancy and postpartum depression.
  • Thyroid hormone levels, specifically triiodothyronine (T3) resin uptake and thyroxine, were noted to correlate with depression ratings.

Purpose of the Study:

  • To further investigate the relationship between thyroid status in late pregnancy and both antenatal and postpartum depression scores.
  • To identify specific thyroid hormone concentration thresholds associated with increased risk of postpartum depression.

Main Methods:

  • Thyroid function tests (thyroxine, free thyroxine index) were conducted at multiple antenatal time points (32-37 weeks) in 31 women.
  • Mood was assessed using the Edinburgh Postnatal Depression Scale and Beck Depression Inventory during late pregnancy and up to 24 weeks postpartum.
  • Correlation and group analyses were performed to examine associations between thyroid hormone levels and depression scores.

Main Results:

  • Mean antenatal thyroxine concentrations and free thyroxine indices showed a significant negative correlation with mean postpartum depression scores across all measured periods.
  • Women with antenatal total thyroxine <10.1 microg/dl or free thyroxine index <1.06 ng/dl exhibited significantly higher mean depression scores postpartum.
  • A higher proportion of women with a history of depression had low antenatal thyroid hormone levels compared to those without such history.

Conclusions:

  • Antenatal thyroid hormone concentrations within the lower euthyroid range may indicate a heightened risk for developing postpartum depressive symptoms.
  • Understanding the interplay between antenatal thyroid status and mood disturbances offers potential new insights into the pathophysiology of perinatal mood disorders.