Related Experiment Videos

[Subclinical hypothyroidism: a cardiovascular risk factor?]

F Cohen-Aubart1, C Jublanc, F Chiche

  • 1Service d'endocrinologie métabolisme, Groupe hospitalier La Pitié-Salpêtrière, 47-83, boulevard de l'Hôpital, 75013 Paris.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|June 1, 2007
PubMed

Insights

Subclinical hypothyroidism may increase cardiovascular risk through traditional factors like lipids and hypertension, and direct effects on blood vessels. Further research clarifies this link and its treatment implications.

Area of Science:

  • Endocrinology
  • Cardiovascular Medicine
  • Epidemiology

Context:

  • Overt hypothyroidism is linked to cardiovascular risk.
  • The association between subclinical hypothyroidism and cardiovascular disease is debated.
  • Understanding this link is crucial for cardiovascular health.

Purpose:

  • To review epidemiological evidence on subclinical hypothyroidism and cardiovascular risk.
  • To explore the mechanisms linking subclinical hypothyroidism to cardiovascular disease.
  • To discuss therapeutic implications for managing cardiovascular risk.

Summary:

  • Subclinical hypothyroidism's cardiovascular impact is likely mediated by traditional risk factors (lipids, hypertension).
  • Inflammation, hemostasis, and direct thyroid hormone effects on vessel walls are potential mechanisms.
  • The review synthesizes evidence and discusses treatment strategies.

Impact:

  • Highlights the probable link between subclinical hypothyroidism and cardiovascular disease.
  • Informs clinical practice regarding cardiovascular risk assessment in subclinical hypothyroidism.
  • Provides a foundation for future research and therapeutic interventions.

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...
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 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...
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...
Psychoneuroimmunology: Cardiovascular Disease01:27

Psychoneuroimmunology: Cardiovascular Disease

Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
A key area of focus in PNI is the relationship between stress and coronary...