[Inflammatory cytokines]

Hideto Ishii1, Masayuki Yoshida

  • 1Life Science and Bioethics Research Center, Tokyo Medical and Dental University.

Insights

Diabetic macroangiopathy involves inflammation, where cytokines and macrophages in adipose tissue promote atherosclerosis. This systemic inflammation contributes to diabetic vascular complications.

Area of Science:

  • Biomedical science
  • Immunology
  • Endocrinology

Context:

  • Diabetic macroangiopathy is a severe complication of diabetes mellitus.
  • Inflammatory cytokines play a key role in atherosclerosis development in diabetic patients.
  • Macrophages accumulate in adipose tissue during diabetes, secreting inflammatory cytokines like TNF-alpha.

Purpose:

  • To elucidate the role of inflammatory cytokines and macrophage activity in diabetic macroangiopathy.
  • To understand the link between adipose tissue inflammation and systemic inflammation in diabetes.
  • To explore the mechanisms of leukocyte-endothelial interactions in diabetic vascular complications.

Summary:

  • Inflammatory cytokines, produced by macrophages in adipose tissue, contribute to systemic inflammation in diabetes.
  • These cytokines induce leukocyte-endothelial interactions, crucial for atherosclerosis progression.
  • While not the sole factor, inflammation is central to diabetic macroangiopathy and vascular issues.

Impact:

  • Highlights the critical role of inflammation in diabetic vascular complications.
  • Provides insights into the mechanisms underlying atherosclerosis in diabetes.
  • Suggests potential therapeutic targets for managing diabetic macroangiopathy.

Related Concept Videos

Inflammatory Response01:28

Inflammatory Response

An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Acute Inflammation III: Local and Systemic Effects01:25

Acute Inflammation III: Local and Systemic Effects

Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...
Inflammatory Response I: Vascular and Cellular01:30

Inflammatory Response I: Vascular and Cellular

The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal BarrierA...
Acute Inflammation I: Inflammatory Response01:26

Acute Inflammation I: Inflammatory Response

Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect damage-associated...
Acute Inflammation II: Cellular Phase01:26

Acute Inflammation II: Cellular Phase

The cellular phase of acute inflammation is a tightly orchestrated sequence of events that recruits leukocytes, primarily neutrophils, to sites of tissue injury or infection. Following the initial vascular changes, this phase ensures effective immune cell migration, activation, and function at the affected site to eliminate pathogens and initiate tissue repair.Leukocyte Recruitment CascadeLeukocyte recruitment happens in four steps: margination, adhesion, transmigration, and chemotaxis. Reduced...