字幕表 動画を再生する 英語字幕をプリント Glycogen storage disease is the result of defects in the processing of glycogen synthesis or breakdown within muscles, liver, and other cell types. GSD has two classes of cause: genetic and acquired. Genetic GSD is caused by any inborn error of metabolism involved in these processes. In livestock, acquired GSD is caused by intoxication with the alkaloid castanospermine. Overall, according to a study in British Columbia, approximately 2.3 children per 100 000 births have some form of glycogen storage disease. In the United States, they are estimated to occur in 1 per 20,000-25,000 births. A Dutch study estimated it to be 1 in 40,000. Types There are eleven distinct diseases that are commonly considered to be glycogen storage diseases. GSD type VIII: In the past, considered a distinct condition. Now classified with VI. Has been described as X-linked recessive. GSD type X: In the past, considered a distinct condition. Now classified with VI. References External links Asociación Española de Enfermos de Glucogenosis