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Related Concept Videos

Diabetes Mellitus: Introduction01:26

Diabetes Mellitus: Introduction

Diabetes mellitus consists of chronic metabolic disorders characterized by persistent hyperglycemia. This elevated blood glucose results from defects in insulin secretion, impaired insulin action, or both. Insulin, produced by pancreatic β-cells, is essential for maintaining glucose homeostasis by facilitating cellular glucose uptake for energy or storage. Disruptions in insulin production or function lead to glucose accumulation in the bloodstream, causing the clinical features and long-term...
Diabetes Mellitus: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
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...
Type II Diabetes I: Introduction01:26

Type II Diabetes I: Introduction

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
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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Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
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The interface between thyroid and diabetes mellitus.

Leonidas H Duntas1, Jacques Orgiazzi, Georg Brabant

  • 1Endocrine Unit, Evgenidion Hospital, University of Athens Medical School, Athens, GreeceService d' Endocrinologie-Diabète-Maladies Métaboliques, Centre Hospitalier, Lyon-Sud, FranceDepartment of Endocrinology, The Christie, Manchester Academic Health Science Centre, Manchester, UK.

Clinical Endocrinology
|April 28, 2011
PubMed
Summary
This summary is machine-generated.

Thyroid disorders and diabetes mellitus (DM) are linked through common pathways and genetics. Understanding these connections, like 5' adenosine monophosphate-activated protein kinase (AMPK) regulation, improves patient care.

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Area of Science:

  • Endocrinology
  • Metabolic Disorders
  • Molecular Biology

Background:

  • Thyroid disease and diabetes mellitus (DM), both type 1 and type 2, exhibit a strong clinical association.
  • This link has significant implications for insulin sensitivity and therapeutic strategies in affected patients.
  • Recent research is elucidating the complex pathophysiological basis of this comorbidity.

Purpose of the Study:

  • To review the intricate pathophysiological mechanisms underlying the association between thyroid disorders and DM.
  • To discuss the role of common signaling pathways, genetic susceptibility, and key molecular regulators like AMPK.
  • To explore the clinical consequences for patient management and the potential impact of treatments like metformin.

Main Methods:

  • Literature review focusing on the interplay between thyroid hormones, insulin sensitivity, and metabolic regulation.
  • Analysis of common signaling pathways, including 5' adenosine monophosphate-activated protein kinase (AMPK).
  • Examination of genetic factors contributing to the co-occurrence of autoimmune thyroid disease and type 1 diabetes.

Main Results:

  • The association is underpinned by shared signaling pathways and, in some cases, linked genetic susceptibility.
  • 5' adenosine monophosphate-activated protein kinase (AMPK) is identified as a crucial mediator, influencing insulin sensitivity and thyroid hormone feedback on energy expenditure.
  • Thyroid hormones impact appetite and energy expenditure, interacting with metabolic regulatory pathways.

Conclusions:

  • Understanding the molecular mechanisms linking thyroid disorders and DM is crucial for optimizing clinical care.
  • Targeting pathways like AMPK may offer novel therapeutic approaches for patients with both conditions.
  • Metformin's potential to suppress TSH warrants further investigation in the context of thyroid dysfunction in diabetic patients.