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Related Concept Videos

Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...
TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
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...
Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

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Related Experiment Video

Updated: Jun 16, 2026

Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator
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TNF-alpha and obesity.

T Tzanavari1, P Giannogonas, Katia P Karalis

  • 1Division of Developmental Biology, Biomedical Research Foundation, Academy of Athens, 4 Soranou Ephessiou, Athens, Greece.

Current Directions in Autoimmunity
|February 23, 2010
PubMed
Summary
This summary is machine-generated.

Obesity causes chronic inflammation, particularly through Tumor Necrosis Factor-alpha (TNF-alpha). Targeting TNF-alpha offers a promising therapeutic strategy for obesity and related insulin resistance.

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Area of Science:

  • Biomedical Science
  • Endocrinology
  • Immunology

Background:

  • Obesity is a global epidemic linked to numerous comorbidities, including cardiovascular diseases, arthritis, cancers, and degenerative brain conditions.
  • Obesity is a primary driver of insulin resistance and type 2 diabetes, characterized by a state of chronic low-grade inflammation.
  • Adipose tissue functions as an endocrine organ, releasing factors influenced by adiposity, and in obesity, it becomes infiltrated by macrophages, increasing proinflammatory cytokines.

Purpose of the Study:

  • To review the role of Tumor Necrosis Factor-alpha (TNF-alpha) in obesity and related conditions.
  • To explore the therapeutic potential of targeting TNF-alpha for obesity and insulin resistance.
  • To summarize recent clinical data and findings on the pathogenesis of obesity and insulin resistance.

Main Methods:

  • Literature review of existing research on TNF-alpha in obesity.
  • Analysis of studies investigating the correlation between TNF-alpha levels, adiposity, and insulin resistance.
  • Inclusion of recent clinical data and pathogenetic findings.

Main Results:

  • Obesity is associated with chronic low-grade inflammation, with adipose tissue releasing increased proinflammatory cytokines like TNF-alpha.
  • TNF-alpha expression in adipose tissue correlates with the degree of adiposity and associated insulin resistance.
  • Targeting TNF-alpha and its receptors is a potential therapeutic avenue for insulin resistance and type 2 diabetes.

Conclusions:

  • TNF-alpha plays a critical role in the inflammatory processes underlying obesity and insulin resistance.
  • Modulating TNF-alpha activity presents a promising therapeutic strategy for managing obesity and type 2 diabetes.
  • Further research into TNF-alpha's role can lead to novel treatment approaches for these widespread metabolic disorders.