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硫血红蛋白

硫血红蛋白中血红素的可能结构[1]

硫血红蛋白为一种血红蛋白的变体,本身呈绿色,当它形成后便不能转回正常的血红蛋白。即使很少分量的硫血红蛋白在血液中存在,亦会造成发绀

其出现是罕见的现象,硫化氢(或硫离子)和Fe3+在血液中结合,使其无法输送氧气。

成因

于特定情况下服食磺胺类药物(如过量服用舒马曲坦柳氮磺胺吡啶)或其他特别的药物(如非那吡啶[2]乙酰苯胺非那西丁)能造成硫血红蛋白中毒。另外职业性暴露于硫化物也可能造成中毒。

中毒症状

Sulfhemoglobinemia
硫血红蛋白血症
分类和外部资源
ICD-10D74.8
ICD-9-CM289.7
MedlinePlus003371
MeSHD013436
[编辑此条目的维基数据]

症状包括血液、皮肤、黏膜变成蓝或绿色(发绀),但全血细胞计数可能不会显示有任何异常,因血液中若有0.5g/dL硫血红蛋白便可引起症状。

治疗

可藉正常红血球的生成而自愈。以亚硝酸盐作为解毒剂,可使其血红素转为正铁血红蛋白的血红素。这时候可使用亚甲蓝将其代谢。但若病情严重便需接受输血。

案例

医学杂志《柳叶刀》报告了一个中毒案例[3]:一名42岁男子以下跪的姿势入睡,使其腿部受压,造成腔室症候群。当医生为男子抽血以进行手术时,他发现男子的血液是绿色的。其后经验血发现男子服用过量舒马曲坦,致其血液内含有硫血红蛋白。[4][5][6]

参考

  1. ^ John P. Greer (Herausgeber), Daniel A. Arber (Herausgeber), George M. Rodgers (Herausgeber), Frixos Paraskevas (Herausgeber), John Foerster (Herausgeber), Bertil E. Glader (Herausgeber), Robert Means (Herausgeber): Wintrobe's Clinical Hematology. Lippincott Williams&Wilki; Auflage: 12. Auflage Dezember 2008; ISBN 978-0781765077; S. 147–148.
  2. ^ Gopalachar AS, Bowie VL, Bharadwaj P. Phenazopyridine-induced sulfhemoglobinemia. Ann Pharmacother. June 2005, 39 (6): 1128–30 [2013-01-02]. PMID 15886294. doi:10.1345/aph.1E557. (原始内容存档于2013-04-19). 
  3. ^ Flexman AM, Del Vicario G, Schwarz SK. Dark green blood in the operating theatre. Lancet. June 2007, 369 (9577): 1972 [2013-01-02]. PMID 17560450. doi:10.1016/S0140-6736(07)60918-0. (原始内容存档于2020-09-24). 
  4. ^ "Patient bleeds dark green blood"页面存档备份,存于互联网档案馆), BBC News, 8 June 2007
  5. ^ Also on FOX页面存档备份,存于互联网档案馆) 11 June 2007
  6. ^ "Dark Green Blood In The Operating Theatre"页面存档备份,存于互联网档案馆), Medical News Today, June 8, 2007

外部链接

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硫血红蛋白
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