{"id":5452,"date":"2025-03-04T04:30:09","date_gmt":"2025-03-04T09:30:09","guid":{"rendered":"https:\/\/usmle-rx.com\/?post_type=podcast&p=5452"},"modified":"2026-01-20T09:45:47","modified_gmt":"2026-01-20T14:45:47","slug":"glycogen-storage-diseases-2","status":"publish","type":"podcast","link":"https:\/\/usmle-rx.com\/podcast\/glycogen-storage-diseases-2\/","title":{"rendered":"Glycogen Storage Diseases"},"content":{"rendered":"
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Glucose is the main source of energy for all forms of life, but it isn\u2019t usually stored as individual C6<\/sub>H12<\/sub>O6<\/sub>\u00a0molecules. Animals use glycogen to do that job. Glycogen is a large branched polymer of glucose molecules, linked together by \u03b1-1,4 and \u03b1-1,6 glycosidic bonds. The liver and muscles break down the stored glycogen whenever the body needs an extra boost of glucose.<\/p>\n<\/div>\n

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Glycogen storage diseases\u00a0<\/strong>are genetic defects in glycogen metabolism resulting in accumulation of glycogen. What happens when macromolecules accumulate in cells? Cell damage and dysfunction.<\/p>\n<\/div>\n

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Because the liver and muscles are the two main organs that use glycogen, they are also the two most affected by glycogen storage diseases. In the liver, glycogen accumulation leads to hypoglycemia since the glycogen can\u2019t be broken down to glucose. Damage to the liver from extra glycogen can also lead to liver failure or even liver cancers. In the muscles, glycogen accumulation causes weakness, exercise intolerance, and potentially heart failure.<\/p>\n<\/div>\n

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There are at least 12 distinct glycogen storage diseases, but we\u2019ll cover only the 4 most common ones.<\/p>\n

After listening to this Audio Brick, you should be able to:<\/p>\n