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Related Concept Videos

Type I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis01:25

Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis

Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...
Diabetic Ketoacidosis ll: Pathophysiology01:22

Diabetic Ketoacidosis ll: Pathophysiology

Diabetic ketoacidosis (DKA) is a metabolic emergency characterized by hyperglycemia, ketonemia, and metabolic acidosis. It results from severe insulin deficiency and an excess of counterregulatory hormones, leading to uncontrolled lipolysis, ketogenesis, and widespread electrolyte and fluid disturbances.Pathophysiology The central event in DKA is a profound loss of insulin action. Without insulin, glucose uptake in insulin-dependent tissues is impaired, while hepatic glucose production...
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Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...

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Updated: Jun 3, 2026

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
07:20

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

[Lipodystrophy. Mechanisms, clinical presentation, therapy].

K Miehle1, M Stumvoll, M Fasshauer

  • 1Department für Innere Medizin, Neurologie und Dermatologie, Klinik und Poliklinik für Endokrinologie und Nephrologie, Universitätsklinikum Leipzig.

Der Internist
|March 23, 2011
PubMed
Summary
This summary is machine-generated.

Lipodystrophy syndromes cause severe metabolic issues due to lack of fat tissue. Leptin therapy offers a promising treatment option for these patients, improving metabolic abnormalities.

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Last Updated: Jun 3, 2026

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
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Fiber Type and Subcellular-Specific Analysis of Lipid Droplet Content in Skeletal Muscle
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Fiber Type and Subcellular-Specific Analysis of Lipid Droplet Content in Skeletal Muscle

Published on: June 8, 2022

Area of Science:

  • Endocrinology and Metabolism
  • Genetics and Rare Diseases

Context:

  • Lipodystrophy syndromes are rare genetic or acquired disorders characterized by generalized or partial loss of subcutaneous adipose tissue.
  • These conditions lead to severe metabolic complications, including insulin resistance, diabetes mellitus, and hypertriglyceridemia.
  • Complications can be life-threatening, such as acute pancreatitis, steatohepatitis, and cardiovascular disease.

Purpose:

  • To investigate leptin as a therapeutic agent for severe lipodystrophy.
  • To evaluate the efficacy of leptin in managing metabolic abnormalities associated with lipodystrophy.

Summary:

  • Lipodystrophy syndromes present with significant metabolic derangements unresponsive to conventional treatments.
  • Leptin, a hormone derived from adipose tissue, has emerged as a potential therapeutic strategy.
  • Leptin treatment has demonstrated significant improvements in metabolic parameters in patients with severe lipodystrophy.

Impact:

  • Leptin therapy offers a novel treatment avenue for severe lipodystrophy, addressing critical metabolic dysfunctions.
  • The availability of leptin treatment through compassionate use programs, like the one at University Medicine Leipzig, provides access to care for affected individuals.
  • Improved metabolic control can reduce the risk of severe, life-threatening complications associated with lipodystrophy.