Megalencephaly

（重定向自Hemimegalencephaly）

Megalencephaly (or macrencephaly, abbreviated MEG) is a growth development disorder in which the brain is abnormally large. It is characterized by a brain with an average weight that is 2.5 standard deviations above the mean of the general population. Megalencephaly is usually diagnosed at birth and is confirmed with an MRI. A mutation in the PI3K-AKT pathway is believed to be the primary cause of brain proliferation and ultimately the root cause of megalencephaly. This mutation has produced a classification of brain overdevelopment that consists of two syndromes including, megalencephaly-capillary malformation (MCAP) and megalencephaly-polydactyly-polymicrogyria-hydrocephalus (MPPH). Approximately 1 out of 50 children (2%) are said to have the characteristics of megalencephaly in the general population. There are several neuropsychiatric disorders linked with megalencephaly, however, studies have shown that autism is the most prevalent association with the malformation of MEG. Although no treatment currently exists for megalencephaly, management methods are focused at reducing deficits linked with autism. Most recent research is targeted at creating inhibitors to reduce the mutational pathway that causes megalencephaly.

词汇	Hemimegalencephaly
分类	英语词汇英语翻译词典
释义	Hemimegalencephaly 英语百科 Megalencephaly （重定向自Hemimegalencephaly） Megalencephaly (or macrencephaly, abbreviated MEG) is a growth development disorder in which the brain is abnormally large. It is characterized by a brain with an average weight that is 2.5 standard deviations above the mean of the general population. Megalencephaly is usually diagnosed at birth and is confirmed with an MRI. A mutation in the PI3K-AKT pathway is believed to be the primary cause of brain proliferation and ultimately the root cause of megalencephaly. This mutation has produced a classification of brain overdevelopment that consists of two syndromes including, megalencephaly-capillary malformation (MCAP) and megalencephaly-polydactyly-polymicrogyria-hydrocephalus (MPPH). Approximately 1 out of 50 children (2%) are said to have the characteristics of megalencephaly in the general population. There are several neuropsychiatric disorders linked with megalencephaly, however, studies have shown that autism is the most prevalent association with the malformation of MEG. Although no treatment currently exists for megalencephaly, management methods are focused at reducing deficits linked with autism. Most recent research is targeted at creating inhibitors to reduce the mutational pathway that causes megalencephaly.
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