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Related Concept Videos

Synthesis and Regulation of Thyroid Hormones01:20

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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.
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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.
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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
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Related Experiment Video

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Thyroid Autoimmunity During Universal Salt Iodisation-Possible Short-Term Modulation with Longer-Term Stability.

Navoda Atapattu1, Renuka Jayatissa2, Harendra de Silva1

  • 1Departments of Paediatrics and Paediatric Endocrinology, Lady Ridgeway Hospital, Colombo 08, Sri Lanka.

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Summary
This summary is machine-generated.

Universal salt iodisation (USI) is safe and effective in preventing iodine deficiency. Long-term studies show USI does not increase autoimmune thyroid disease, supporting its continued use.

Keywords:
TPOAbTgAbthyroid autoimmunityuniversal salt iodisation

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Area of Science:

  • Endocrinology
  • Public Health
  • Nutrition

Background:

  • Universal salt iodisation (USI) is a key global strategy for preventing iodine deficiency, successfully protecting millions.
  • Concerns exist regarding USI's impact on cardiovascular health (due to salt intake) and thyroid autoimmunity.
  • The Iodine Global Network provides guidelines for effective USI programs.

Purpose of the Study:

  • To evaluate the short-term effects of USI on thyroid autoimmune markers (TPOAb, TgAb).
  • To assess the long-term safety and impact of USI on thyroid autoimmunity and function.
  • To address concerns about the continued desirability of USI programs.

Main Methods:

  • Analysis of cross-sectional studies in diverse populations.
  • Examination of thyroid peroxidase antibodies (TPOAb) and thyroglobulin antibodies (TgAb) levels.
  • Assessment of biochemical thyroid function over extended periods (up to two decades).

Main Results:

  • Short-term USI showed minimal modulation of thyroid autoimmune markers with preserved thyroid function.
  • Long-term studies indicated a reduced prevalence of TPOAb and TgAb.
  • Biochemical thyroid function remained normal even after two decades of USI.

Conclusions:

  • Current evidence suggests USI is safe and does not increase autoimmune thyroid disease prevalence.
  • Long-term salt iodisation appears to be a safe public health measure.
  • Further long-term, well-designed studies are recommended to confirm these findings.