Fatty acid metabolism: Difference between revisions
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<p>Fatty acids are a source of metabolic energy to be used by muscle cells during exercise. Ingested fats are digested and used as an immediate source of energy by respiring cells or stored in adipocytes (fat cells) as fat droplets.<span class="fck_mw_ref | <p>Fatty acids are a source of metabolic energy to be used by muscle cells during exercise. Ingested fats are digested and used as an immediate source of energy by respiring cells or stored in adipocytes (fat cells) as fat droplets.<span class="fck_mw_ref">http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm</span> <br />During a prolonged period of exercise, energy stored as fat droplets in adipocytes is mobilised as glycogen stores are used up. Epinephrine or glucagon bind to receptors on adipocyte cell membranes and initiate a secondary messenger response. Adenylate cyclase is activated to convert ATP to cAMP, which in turn binds to Protein Kinase and activates it. Activated Protein Kinase activates Triglycerol Lipases which break down triglycerols into three fatty acid molecules.<span class="fck_mw_ref">http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm</span> <br />Fatty acid molecules are taken up by the serum albumin in the bloodstream. The fatty acid molecules are transported to respiring muscle cells to undergo β-oxidation. This reaction produces ATP and carbon dioxide.<span class="fck_mw_ref">http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm</span> | ||
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Revision as of 23:12, 19 November 2013
Fatty acids are a source of metabolic energy to be used by muscle cells during exercise. Ingested fats are digested and used as an immediate source of energy by respiring cells or stored in adipocytes (fat cells) as fat droplets.http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm
During a prolonged period of exercise, energy stored as fat droplets in adipocytes is mobilised as glycogen stores are used up. Epinephrine or glucagon bind to receptors on adipocyte cell membranes and initiate a secondary messenger response. Adenylate cyclase is activated to convert ATP to cAMP, which in turn binds to Protein Kinase and activates it. Activated Protein Kinase activates Triglycerol Lipases which break down triglycerols into three fatty acid molecules.http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm
Fatty acid molecules are taken up by the serum albumin in the bloodstream. The fatty acid molecules are transported to respiring muscle cells to undergo β-oxidation. This reaction produces ATP and carbon dioxide.http://www.wiley.com/college/boyer/0470003790/animations/fatty_acid_metabolism/fatty_acid_metabolism.htm