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Related Concept Videos

Lipid-derived Compounds in the Human Body01:31

Lipid-derived Compounds in the Human Body

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Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various  biological processes .
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin,...
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Overview of Lipid Metabolism01:24

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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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Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ...
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Lipid Digestion01:06

Lipid Digestion

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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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Lipid Absorption01:24

Lipid Absorption

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Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
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What are Lipids?01:38

What are Lipids?

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Assessing Whole-Body Lipid-Handling Capacity in Mice
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Lipidomics in nutrition research.

Victor Castro-Alves1, Matej Orešič2,3, Tuulia Hyötyläinen1

  • 1School of Science and Technology, Örebro University.

Current Opinion in Clinical Nutrition and Metabolic Care
|July 5, 2022
PubMed
Summary

Lipidomics research reveals saturated fats are more harmful than polyunsaturated fats or carbohydrates when overconsumed. This highlights lipidomics

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Area of Science:

  • Nutritional Science
  • Metabolomics
  • Lipidomics

Background:

  • Malnutrition, encompassing under- and overnutrition, significantly impacts health.
  • Early-life nutrition and later-life overfeeding have distinct metabolic consequences.
  • Understanding macronutrient impact on the lipidome is crucial for health.

Purpose of the Study:

  • To review recent lipidomics findings in nutrition and health research.
  • To elucidate the differential health impacts of various macronutrient overfeeding scenarios.
  • To explore the role of lipidomics in personalized nutrition strategies.

Main Methods:

  • Review of existing lipidomics studies.
  • Analysis of data concerning macronutrient intake and lipidome alterations.
  • Investigation into the effects of saturated fat, polyunsaturated fat, and carbohydrate overfeeding.

Main Results:

  • Overfeeding with saturated fat is metabolically more detrimental than with polyunsaturated fat or carbohydrates.
  • Saturated fat-rich diets increase lipotoxic lipids (e.g., ceramides, saturated triacylglycerols) and low-density lipoprotein aggregation.
  • Polyunsaturated fatty acid-rich diets, particularly n-3 fatty acids, can decrease triacylglycerol levels, though individual responses vary.

Conclusions:

  • Lipidomics offers valuable insights into clinical nutrition and personalized nutrition.
  • Dietary fat quality significantly influences metabolic health.
  • Future research should explore the interplay between diet, gut microbiome, and metabolome for a comprehensive understanding of nutritional responses.