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Related Concept Videos

Fats as Energy Storage Molecules01:06

Fats as Energy Storage Molecules

Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis directly...
Fats as Energy Storage Molecules01:06

Fats as Energy Storage Molecules

Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis directly...
Overview of Fatty Acid Metabolism01:28

Overview of Fatty Acid Metabolism

Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fatigue01:21

Fatigue

Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
Muscle Recovery and Fatigue01:24

Muscle Recovery and Fatigue

Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...
Lipid Digestion01:06

Lipid Digestion

Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.

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Innovative Adipose Tissue Fractionation for Transforming Fat into Specialized Components
04:36

Innovative Adipose Tissue Fractionation for Transforming Fat into Specialized Components

Published on: July 11, 2025

Making fat work.

Robert M Sargis1, Matthew J Brady

  • 1Department of Medicine, Institute of Endocrine Discovery and Clinical Care, University of Chicago, Chicago, IL 60637, USA.

Perspectives in Biology and Medicine
|November 2, 2010
PubMed
Summary
This summary is machine-generated.

Understanding the complex mechanisms behind the obesity epidemic is crucial. This exploration focuses on cellular lipid metabolism and external factors, particularly in pediatric obesity, to inform interventions.

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Area of Science:

  • Metabolic disease
  • Obesity research
  • Cellular lipid metabolism

Background:

  • Global epidemics of obesity and metabolic diseases pose significant societal burdens.
  • The precise mechanisms driving these trends remain incompletely understood.
  • Historical context highlights the shift in body fat's role from essential for survival to a health risk due to caloric excess.

Purpose of the Study:

  • To explore the cellular and external factors contributing to the obesity epidemic.
  • To build upon insights from Philip A. Wood's 'How Fat Works' regarding lipid metabolism.
  • To identify potential individual and public policy interventions to reverse weight trends, with a focus on pediatric obesity.

Main Methods:

  • Literature review and synthesis of current research on obesity.
  • Analysis of cellular lipid metabolism pathways.
  • Examination of societal and environmental contributors to obesity.
  • Focus on pediatric obesity trends and contributing factors.

Main Results:

  • Obesity is multifactorial, involving complex cellular lipid metabolism and external influences.
  • Caloric excess in modern society has transformed body fat from a survival mechanism to a health concern.
  • Pediatric obesity presents a growing challenge requiring targeted understanding and interventions.

Conclusions:

  • A comprehensive understanding of obesity mechanisms is vital for developing effective interventions.
  • Addressing both individual behaviors and public policy is necessary to combat the obesity epidemic.
  • Specific attention to pediatric obesity is critical for long-term public health outcomes.