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Related Concept Videos

Obesity01:24

Obesity

416
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...
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Autoimmune Disorders01:29

Autoimmune Disorders

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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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Psychoneuroimmunology: Diabetes and Cancer01:19

Psychoneuroimmunology: Diabetes and Cancer

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Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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Inflammation01:38

Inflammation

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Overview
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Inflammatory Response01:28

Inflammatory Response

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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,...
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Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
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Related Experiment Video

Updated: Jun 15, 2025

Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
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Obesity-associated Inflammation and Alloimmunity.

Hao Zhou1, Merih Gizlenci1,2, Yao Xiao1

  • 1Division of Transplant Surgery and Transplant Surgery Research Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.

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Summary

Obesity, a chronic inflammatory condition, impacts organ transplant success. Weight loss may improve transplant outcomes by reducing inflammation and alloimmune responses.

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Area of Science:

  • Immunology
  • Transplantation
  • Metabolic disorders

Background:

  • Obesity is a growing global health issue with increasing prevalence.
  • Patients with obesity are increasingly undergoing organ transplantation.
  • Obesity is characterized by chronic inflammation, potentially affecting transplant outcomes.

Purpose of the Study:

  • To review mechanisms of adipose tissue inflammation in obesity.
  • To explore the impact of obesity-associated inflammation on transplant outcomes.
  • To highlight the benefits of weight loss on alloimmune responses in transplantation.

Main Methods:

  • Literature review of cellular and molecular mechanisms.
  • Analysis of obesity's role in adipose tissue inflammation.
  • Synthesis of data on weight loss effects in transplant recipients.

Main Results:

  • Obesity-induced adipose tissue inflammation involves specific cellular and molecular pathways.
  • These inflammatory pathways can negatively influence alloimmune responses and graft function.
  • Evidence suggests weight loss can mitigate these adverse effects.

Conclusions:

  • Obesity-associated inflammation poses a significant challenge in organ transplantation.
  • Understanding these mechanisms is crucial for improving transplant success rates.
  • Weight loss emerges as a potentially beneficial strategy to enhance transplant outcomes.