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Related Concept Videos

Diabetic Retinopathy01:27

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
Type I Diabetes II: Pathophysiology01:26

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...
Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

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.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility, suggesting a...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
Diabetic Foot Ulcer01:31

Diabetic Foot Ulcer

Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...

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Related Experiment Video

Updated: May 23, 2026

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
08:21

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans

Published on: July 21, 2023

Microvascular diseases: is a new era coming?

N Wiernsperger1, J R Rapin

  • 1CarMeN Laboratory, INSA Lyon, Villeurbanne, France. nicolas.wiernsperger@free.fr

Cardiovascular & Hematological Agents in Medicinal Chemistry
|April 7, 2012
PubMed
Summary

Microcirculation, the body's smallest blood vessels, is crucial for nutrient delivery and disease. New research highlights its role in cardiovascular and metabolic disorders, necessitating targeted treatments.

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Last Updated: May 23, 2026

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
08:21

Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans

Published on: July 21, 2023

Area of Science:

  • Physiology
  • Vascular Biology
  • Pathophysiology

Background:

  • The microvascular bed, including arterioles and capillaries, precisely regulates nutrient delivery.
  • Historically neglected due to technical limitations, microcirculation is now recognized for its role in disease.

Purpose of the Study:

  • To review the structure, physiology, and investigation methods of microcirculation.
  • To highlight the emerging understanding of microcirculation's causal role in cardiovascular and metabolic disorders.
  • To discuss current and potential pharmacological interventions for microcirculatory dysfunction.

Main Methods:

  • Comprehensive literature review of microvascular structure and function.
  • Analysis of recent advancements in microcirculation research techniques.
  • Examination of pharmacological agents impacting microcirculation.

Main Results:

  • Microvascular dysfunction is increasingly implicated as a source of pathologies, including cardiometabolic syndrome and prediabetes.
  • Metformin demonstrates unique, intrinsic actions on terminal arterioles independent of its antidiabetic effects.
  • Limited specific treatments exist for microcirculatory disorders, with pentoxifylline and metformin as exceptions.

Conclusions:

  • Microcirculation research is entering a new era with advanced techniques and a deeper understanding of its function.
  • Specific pharmacological developments targeting microcirculatory disorders are warranted.
  • Addressing microcirculatory dysfunction is critical for managing complex diseases.