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

Insulin: The Receptor and Signaling Pathways01:28

Insulin: The Receptor and Signaling Pathways

5.9K
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...
5.9K
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

2.7K
The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
2.7K
Hormones Regulating Blood Glucose01:16

Hormones Regulating Blood Glucose

7.3K
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
7.3K
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

11
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.
11
Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

986
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...
986
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

54
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...
54

You might also read

Related Articles

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

Sort by
Same author

Gut bacterial metabolite imidazole propionate potentiates Alzheimer's disease pathology.

Nature communications·2026
Same author

Effects of saccharin on insulin sensitivity in adult, overweight individuals without diabetes: a real-world pilot study.

Journal of the Endocrine Society·2026
Same author

Intestinal transit time phenotype is not transferred through gut microbiota transplantation.

PeerJ·2026
Same author

Gut microbiota responses to bariatric surgery are associated with metabolic outcomes and type 2 diabetes remission.

Nature metabolism·2026
Same author

FGFR signaling establishes spatial gradients of secretory cell identities along the airway proximal-distal axis.

Nature communications·2026
Same author

A gut microbiome-kidney-heart axis predictive of future cardiovascular diseases.

Nature communications·2026
Same journal

AARS1 promotes tumor progression and immune evasion via ATF6 lactylation-mediated tryptophan metabolism in hepatocellular carcinoma.

Cell metabolism·2026
Same journal

Reactive species as regulators of immune cell metabolism, tolerance, and autoimmunity.

Cell metabolism·2026
Same journal

The interplay between the microbiome and immune cells in metabolic homeostasis and disease.

Cell metabolism·2026
Same journal

The metabolic basis of regulated cell death.

Cell metabolism·2026
Same journal

Gut microbiota-derived lysine phenylacetylation impairs mitochondrial function and is alleviated by SIRT3.

Cell metabolism·2026
Same journal

Methionine-supplemented longevity diet increases growth hormone, GLP-1, and FGF21; reduces frailty; and promotes healthspan.

Cell metabolism·2026
See all related articles

Related Experiment Video

Updated: Apr 25, 2026

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
08:32

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain

Published on: January 4, 2018

11.6K

Microbial modulation of insulin sensitivity.

Muhammad Tanweer Khan1, Max Nieuwdorp2, Fredrik Bäckhed3

  • 1Wallenberg Laboratory, Department of Molecular and Clinical Medicine, University of Gothenburg, 413 45 Gothenburg, Sweden.

Cell Metabolism
|September 2, 2014
PubMed
Summary
This summary is machine-generated.

The gut microbiota significantly influences host metabolism and metabolic diseases like obesity and diabetes. Further research is needed to understand if gut bacteria changes precede these conditions and the exact mechanisms involved.

More Related Videos

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
08:47

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Published on: December 7, 2017

12.6K
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

70.0K

Related Experiment Videos

Last Updated: Apr 25, 2026

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
08:32

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain

Published on: January 4, 2018

11.6K
Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
08:47

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Published on: December 7, 2017

12.6K
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

70.0K

Area of Science:

  • Microbiology
  • Metabolic Health
  • Human Physiology

Background:

  • The gut microbiota plays a crucial role in host metabolism.
  • Alterations in gut bacteria are linked to metabolic diseases including obesity, insulin resistance, type 2 diabetes, and cardiovascular disease.
  • While associations are seen in humans, causation is mainly shown in animal models.

Purpose of the Study:

  • To investigate the causal role of gut microbiota in human metabolic diseases.
  • To determine if gut microbiota alterations precede insulin resistance and diabetes.
  • To identify molecular mechanisms by which gut microbiota modulates host metabolism.

Main Methods:

  • Review of cross-sectional human studies and animal models.
  • Analysis of microbiota-based interventions in humans.
  • Examination of microbiota transfer studies in germ-free mice.

Main Results:

  • Altered gut microbiota can directly impact human host metabolism.
  • Evidence suggests a potential causal link between gut microbiota and metabolic health.
  • Further investigation is required to establish temporal relationships and mechanisms.

Conclusions:

  • Gut microbiota modulation offers potential for novel diagnostics and therapeutics for metabolic diseases.
  • Understanding the mechanistic link between gut bacteria and metabolic disorders is essential.
  • Future research should focus on the preceding role and molecular underpinnings of microbiota alterations in metabolic disease development.