… Cold agglutinins usually agglutinate blood cells at temperatures below 10-15°C, but in some patients, even higher temperatures, and in rare cases above 30°C, can be effective. Therefore, when the skin or fingertips of a patient with a high titer of this antibody are exposed to low temperatures, blood cells in the local blood vessels agglutinate, causing circulatory disorders (cold agglutinin disease). Most of these antibodies belong to the IgM immunoglobulin and are reactive with complement, but while antibodies are easily dissociated at high temperatures, complement only works strongly at temperatures close to body temperature, so hemolysis in the body does not occur very strongly. … *Some of the terminology that refers to "cold agglutinin disease" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 寒冷凝集素が血球を凝集する温度は通常10~15℃以下だが,患者によってはさらに高い温度,まれには30℃以上でも有効なこともある。そのため,この抗体を高力価にもった患者の皮膚,指先等が低温にさらされると,局所の血管の中で血球が凝集し循環障害を起こす(寒冷凝集素病)。この抗体の多くはIgM免疫グロブリンに属し,補体との反応性をもつが,高温で抗体は解離しやすいのに対し,補体は体温付近でないと強く働かないので,体内での溶血はそれほど強く起こらない。… ※「寒冷凝集素病」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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