…Shigella are gram-negative rods measuring 2-4 μm in length and 0.4-0.7 μm in width, without flagella. They are broadly divided into four groups: group A ( Shigella dysenteriae ), group B ( S. flexneri ), group C ( S. boydii ), and group D ( S. sonnei ), and each group is divided into about 10 types, for a total of 30 or so types. Shigella enters the body through oral infection, proliferating in the jejunum and reaching the colon, and proliferating in the mucosal epithelial cells of the descending and sigmoid colon in particular, reaching the lamina propria, where they cause inflammation and degeneration due to endotoxins, resulting in the formation of ulcers. … *Some of the terminology that mentions "Shigella dysenteriae" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…赤痢菌は長さ2~4μm,幅0.4~0.7μmのグラム陰性の杆菌で,鞭毛はない。A群(Shigella dysenteriae),B群(S.flexneri),C群(S.boydii),D群(S.sonnei)の4群に大別され,各群はそれぞれ10型前後に型別され,総計三十数型に分類されている。経口感染によって侵入した赤痢菌は,空腸内で増殖しつつ結腸に達し,とくに下行結腸,S状結腸の粘膜上皮細胞内で増殖して固有層に至り,内毒素による炎症,変性の結果,潰瘍を形成する。… ※「Shigella dysenteriae」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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