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Unique Expression of HRF20 (CD59) in Human Nervous Tissue
Author(s) -
Akatsu Hiroyasu,
Yamada Tatsuo,
Okada Noriko,
Yamamoto Takayuki,
Yamashina Manabu,
Okada Hidechika
Publication year - 1997
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1997.tb01208.x
Subject(s) - cd59 , decay accelerating factor , biology , paroxysmal nocturnal hemoglobinuria , immunohistochemistry , complement system , antibody , central nervous system , pathology , complement membrane attack complex , peripheral nervous system , staining , membrane glycoproteins , nervous system , nervous tissue , parenchyma , glycoprotein , complement receptor , immunology , microbiology and biotechnology , endocrinology , neuroscience , medicine , genetics , botany
Damage to autologous tissue by complement is limited by several widely distributed membrane‐associated glycoproteins which restrict the action of the complement in homologous species. These include decay accelerating factor (DAF), membrane cofactor protein (MCP) and 20 kDa homologous restriction factor (HRF20,CD59). Using immunohistochemical techniques, we examined the localization of these proteins in the centra] nervous system (CNS) and peripheral nervous system (PNS) using non‐neurological human nervous tissue since some complement components have been demonstrated to be synthesized in the CNS. There was no evidence of parenchymal staining by anti‐DAF or anti‐MCP antibodies in either type of tissue except for the staining of the endothelium in capillaries. On the other hand, anti‐HRF20 antibody clearly stained myelinated axons in the CNS as well as Schwann cells in the PNS. In addition, we detected positive staining by anti‐DAF antibody in the PNS of a Paroxysmal nocturnal hemoglobinuria (PNH) patient who is genetically deficient in HRF20.