Spinal progressive muscular atrophy

Japanese: spinal progressive muscular atrophy(英語表記)spinalprogressivemuscularatrophy
Spinal progressive muscular atrophy

...It is known that there are areas with a high incidence of the disease on the island of Guam and on the Kii Peninsula in Japan, but it has been suggested that the amyotrophic lateral sclerosis in these areas may be a separate disease from the usual form seen in other areas.
[spinal progressive muscular atrophy (SPMA)]
This is a type of motor neuron disease that affects only the lower motor neurons, and includes a variety of different types, many of which are hereditary. All of them cause muscle atrophy and weakness in the skeletal muscles that perform voluntary movement, but they are subdivided into several diseases based on differences in the age at which they develop, the genetic pattern, and the distribution of affected muscles.

*Some of the terminology that refers to "spinal progressive muscular atrophy" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…グアム島や日本の紀伊半島にはこの病気の多発地域があることが知られているが,これらの地域における筋萎縮性側索硬化症は,他の地域にみられる通常のものとは別個の疾患ではないかという考えもある。
[脊髄性進行性筋萎縮症spinal progressive muscular atrophy(SPMA)]
 下位運動ニューロンのみがおかされる型の運動ニューロン疾患であり,種々の異なったものが含まれるが遺伝性のものが多い。いずれも随意運動を営む骨格筋の筋萎縮と筋力低下を生ずるものであるが,発症年齢,遺伝様式,おかされる筋肉の分布の違いなどにより,いくつかの疾患に細分されている。…

※「spinal progressive muscular atrophy」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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