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Diabetes Mellitus: Type 2 and Gestational01:22

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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
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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.
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For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
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Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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What Is Gestational Diabetes-Really?

Thomas A Buchanan1,2, Anny H Xiang2,3, Kathleen A Page1,2

  • 1Division of Endocrinology and Diabetes, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA.

Diabetes
|April 8, 2025
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Summary
This summary is machine-generated.

Gestational diabetes mellitus (GDM) is often a sign of chronic beta-cell dysfunction, not solely caused by pregnancy. This condition reveals underlying issues rather than being solely pregnancy-induced.

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Area of Science:

  • Endocrinology
  • Reproductive Medicine
  • Metabolic Disorders

Background:

  • Gestational diabetes mellitus (GDM) is a common pregnancy complication characterized by glucose intolerance.
  • Traditionally, GDM pathogenesis is linked to insufficient pancreatic beta-cell compensation for pregnancy-related insulin resistance.

Purpose of the Study:

  • To challenge the traditional view of GDM pathogenesis.
  • To present evidence suggesting GDM results from multiple causes of inadequate beta-cell function.
  • To explore the implications of GDM as a marker for chronic beta-cell dysfunction.

Main Methods:

  • Review and synthesis of existing evidence on GDM mechanisms.
  • Characterization of beta-cell defects in a high-risk population (Hispanic Americans).

Main Results:

  • Evidence suggests GDM is not solely caused by pregnancy but often detects pre-existing, progressive beta-cell dysfunction.
  • GDM arises from multiple etiologies leading to a common manifestation of inadequate beta-cell function and elevated glucose levels.
  • Specific beta-cell defects were characterized in Hispanic Americans, a high-risk group.

Conclusions:

  • GDM may represent the detection of chronic, progressive beta-cell dysfunction, temporally related but not mechanistically caused by pregnancy.
  • Understanding the diverse etiologies of GDM is crucial for clinical and research advancements.
  • GDM's role as a marker for long-term diabetes risk warrants further investigation.