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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Infantile Refsum disease ： ウィキペディア英語版 Infantile Refsum disease Infantile Refsum disease (IRD), also called infantile phytanic acid storage disease, is a rare autosomal recessive congenital peroxisomal biogenesis disorder within the Zellweger spectrum. These are disorders of the peroxisomes that are clinically similar to Zellweger syndrome and associated with mutations in the ''PEX'' family of genes. IRD is associated with deficient phytanic acid catabolism, as is Adult Refsum disease, but they are different disorders that should not be confused.〔 == Molecular basis of disease == Infantile Refsum disease is an autosomal recessive disorder caused by mutations in genes that encode peroxins, proteins required for normal peroxisome assembly. Most commonly, patients have mutations in the ''PEX1'', ''PEX3'', ''PEX6'', ''PEX12'', and ''PEX26'' genes. In almost all cases, patients have mutations that inactivate or greatly reduce the activity of both the maternal and paternal copies of one these aforementioned ''PEX'' genes. As a result of impaired peroxisome function, an individual's tissues and cells can accumulate very long chain fatty acids (VLCFA) and branched chain fatty acids (BCFA) that are normally degraded in peroxisomes. The accumulation of these lipids can impair the normal function of multiple organ systems, as discussed below. In addition, these individuals can show deficient levels of plasmalogens, ether-phospholipids that are especially important for brain, lung, and heart functions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Infantile Refsum disease」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.