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Related Concept Videos

Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
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...
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...

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[Erythrocyte abnormalities in thyroid dysfunction].

Souheil Omar1, Sameh Hadj Taeib, Faouzi Kanoun

  • 1Laboratoire de Biochimie, Service d'Endocrinologie Diabétologie, Hôpital la Rabta, Tunis, Tunisia.

La Tunisie Medicale
|November 5, 2010
PubMed
Summary
This summary is machine-generated.

Thyroid dysfunction commonly causes erythrocyte abnormalities, such as anemia and microcytosis. These blood cell changes often resolve once thyroid function is restored, aiding early diagnosis.

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Area of Science:

  • Hematology
  • Endocrinology
  • Internal Medicine

Context:

  • Erythrocyte abnormalities are frequently linked to thyroid dysfunction but are under-investigated.
  • Thyroid disease impacts red blood cell parameters, necessitating further research.

Purpose:

  • To determine the prevalence and characteristics of erythrocyte abnormalities in patients with hyperthyroidism and hypothyroidism.
  • To assess the resolution of these abnormalities following the restoration of normal thyroid function.

Summary:

  • This study analyzed 412 patients with peripheral thyroid disease, finding anemia in 40.9% of hyperthyroid and 57.1% of hypothyroid cases.
  • Microcytosis was prevalent in hyperthyroidism (87.7%), while normocytic/macrocytic anemia occurred in 46.3% of cases.
  • Erythrocyte abnormalities largely corrected after achieving a euthyroid state, indicating a direct relationship with thyroid function.

Impact:

  • Highlights the frequent association between thyroid dysfunction and erythrocyte abnormalities, including specific patterns in hypothyroidism and hyperthyroidism.
  • Suggests that investigating erythrocyte changes can aid in identifying subclinical thyroid dysfunction for timely management.
  • Emphasizes the importance of correcting these hematological abnormalities for overall patient health.