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Related Concept Videos

Obesity01:24

Obesity

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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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Inflammatory Response01:28

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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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Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

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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...
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Chronic Pancreatitis I: Introduction01:24

Chronic Pancreatitis I: Introduction

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The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
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Regulation of Metabolism01:19

Regulation of Metabolism

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

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Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
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Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
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Metaflammation's Role in Systemic Dysfunction in Obesity: A Comprehensive Review.

Ioana-Maria Crasan1, Matei Tanase1, Corina Elena Delia1,2

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Obesity is a complex systemic disease, not just a caloric issue. Understanding its metabolic, immune, and epigenetic factors is key to new treatments.

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Area of Science:

  • Immunology
  • Metabolic Science
  • Endocrinology
  • Epigenetics

Background:

  • Obesity is redefined as a complex systemic disease involving metabolic, neuroendocrine, immunological, and epigenetic dysregulation.
  • Adipose tissue is a dynamic endocrine and immune organ; its expansion drives chronic inflammation ('metaflammation'), impacting insulin signaling and leading to insulin resistance, type 2 diabetes, and cardiovascular disease.
  • Gut microbiota dysbiosis and epigenetic modifications further exacerbate systemic dysfunction, affecting hypothalamic function, hormone resistance, and reproductive health.

Purpose of the Study:

  • To integrate molecular, neuroendocrine, and immunometabolic factors in understanding obesity.
  • To reframe obesity as a comprehensive expression of systemic dysfunction.
  • To advocate for a paradigm shift towards personalized, multi-targeted interventions for obesity.

Main Methods:

  • Review of current understanding of obesity's molecular, neuroendocrine, and immunometabolic underpinnings.
  • Integration of data on inflammation pathways (NF-kB, NLRP3 inflammasome), immune cell infiltration, gut microbiota, and epigenetic modifications.
  • Analysis of the impact on insulin signaling, metabolic endotoxemia, neuroendocrine regulation, and reproductive health.

Main Results:

  • Obesity involves chronic, low-grade inflammation ('metaflammation') driven by dysfunctional adipose tissue.
  • Gut microbiota dysbiosis and epigenetic changes contribute significantly to obesity's systemic effects.
  • Existing research highlights the interconnectedness of metabolic, immune, and epigenetic axes in obesity pathogenesis.

Conclusions:

  • Obesity is a multifaceted systemic disease requiring an integrated perspective beyond conventional weight management.
  • Personalized, multi-targeted interventions modulating the immunometabolic network, microbiota, and epigenetics are essential.
  • Addressing the global obesity epidemic necessitates a translational approach focusing on these interconnected biological systems.