Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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.
Carbohydrate Metabolism01:36

Carbohydrate Metabolism

Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in the...
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...
Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood glucose levels...
Diabetes Mellitus: Type 2 and Gestational01:22

Diabetes Mellitus: Type 2 and Gestational

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...
Insulin: The Receptor and Signaling Pathways01:28

Insulin: The Receptor and Signaling Pathways

Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but this inhibition is released...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Metabolic aspects of polycystic ovary syndrome.

Expert review of endocrinology & metabolism·2026
Same author

Inositols: From Established Knowledge to Novel Approaches.

International journal of molecular sciences·2021
Same author

Tailoring treatment for PCOS phenotypes.

Expert review of endocrinology & metabolism·2020
Same author

Inositols in Polycystic Ovary Syndrome: An Overview on the Advances.

Trends in endocrinology and metabolism: TEM·2020
Same author

Publisher Correction: Genome-wide association of polycystic ovary syndrome implicates alterations in gonadotropin secretion in European ancestry populations.

Nature communications·2020
Same author

Experts' opinion on inositols in treating polycystic ovary syndrome and non-insulin dependent diabetes mellitus: a further help for human reproduction and beyond.

Expert opinion on drug metabolism & toxicology·2020

Related Experiment Video

Updated: Jul 18, 2026

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
09:44

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model

Published on: March 5, 2022

Insulin resistance in PCOS.

Evanthia Diamanti-Kandarakis1

  • 1Endocrine Section, First Department of Medicine, Medical School University of Athens, Greece.

Endocrine
|December 23, 2006
PubMed
Summary

Polycystic ovary syndrome (PCOS), a common endocrine disorder, is strongly linked to insulin resistance. Understanding this connection improves management of PCOS symptoms and reproductive health in affected women.

Area of Science:

  • Reproductive endocrinology
  • Metabolic disorders
  • Women's health

Background:

  • Polycystic ovary syndrome (PCOS) is the most prevalent endocrine disorder in women of reproductive age.
  • PCOS presents with diverse clinical signs, but none are uniquely diagnostic.
  • Early observations linked "diabetes of bearded women" to insulin resistance and reproductive issues.

Purpose of the Study:

  • To explore the established link between Polycystic Ovary Syndrome (PCOS) and insulin resistance.
  • To discuss the role of insulin resistance in the pathogenesis and clinical presentation of PCOS.
  • To highlight the clinical applications of understanding insulin resistance in managing PCOS.

Main Methods:

  • Review of in vivo and in vitro data on insulin resistance in PCOS.

More Related Videos

Differentiated Mouse Adipocytes in Primary Culture: A Model of Insulin Resistance
09:48

Differentiated Mouse Adipocytes in Primary Culture: A Model of Insulin Resistance

Published on: February 17, 2023

Study of In Vivo Glucose Metabolism in High-fat Diet-fed Mice Using Oral Glucose Tolerance Test (OGTT) and Insulin Tolerance Test (ITT)
08:13

Study of In Vivo Glucose Metabolism in High-fat Diet-fed Mice Using Oral Glucose Tolerance Test (OGTT) and Insulin Tolerance Test (ITT)

Published on: January 7, 2018

Related Experiment Videos

Last Updated: Jul 18, 2026

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
09:44

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model

Published on: March 5, 2022

Differentiated Mouse Adipocytes in Primary Culture: A Model of Insulin Resistance
09:48

Differentiated Mouse Adipocytes in Primary Culture: A Model of Insulin Resistance

Published on: February 17, 2023

Study of In Vivo Glucose Metabolism in High-fat Diet-fed Mice Using Oral Glucose Tolerance Test (OGTT) and Insulin Tolerance Test (ITT)
08:13

Study of In Vivo Glucose Metabolism in High-fat Diet-fed Mice Using Oral Glucose Tolerance Test (OGTT) and Insulin Tolerance Test (ITT)

Published on: January 7, 2018

  • Analysis of clinical studies characterizing insulin resistance in obese and lean PCOS patients.
  • Examination of the impact of insulin sensitizers on PCOS management.
  • Main Results:

    • Insulin resistance, hyperinsulinemia, and beta-cell dysfunction are highly prevalent in PCOS, though not diagnostic criteria.
    • Insulin resistance plays a central role in the pathogenesis of PCOS.
    • Management strategies involving insulin sensitizers aid in regulating menstrual cycles and facilitating pregnancy in PCOS patients.

    Conclusions:

    • The documentation of insulin resistance has significantly advanced the understanding of PCOS's metabolic components.
    • Knowledge of PCOS and its link to insulin resistance has broadened, revealing the condition's broader health implications.
    • Targeting insulin resistance is crucial for comprehensive PCOS management and improving patient outcomes.