Linked Life Data

2353823

Source:http://linkedlifedata.com/resource/pubmed/id/2353823

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-7-18
pubmed:abstractText
Autoantibodies occurring in a patient with idiopathic autoimmune type chronic active hepatitis (CAH) were found to react with purified rabbit cytochrome P450IA2 and to a much lesser extent with P450IA1. Both cytochrome P450s are known to be inducible by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in the rabbit, and the expression of the microsomal protein recognized by the patient serum was induced in adult rabbit livers after treatment with TCDD. This protein is only weakly detected in liver microsomes from neonatal rabbits exposed to TCDD in utero, which is consistent with the age-dependent induction of P450IA2 by TCDD. The serum specifically reacted with a protein of similar size in microsomes prepared from COS-1 cells transfected with an expression vector containing the full length human P450IA2 cDNA. This reactivity was not detected in the cells transfected with the vector alone, indicating that the antibody recognizes human P450IA2. In addition, the serum extensively inhibited 7-ethoxyresorufin O-deethylation catalyzed by isolated human liver microsomes. This catalytic activity is associated with class IA P450s in other species. A screen of sera from patients with various hepatic and nonhepatic diseases indicates that the autoantibody to P450IA2 occurs rarely in CAH. Cytochrome P450IA2 becomes the third P450 identified as an autoantigen in inflammatory liver diseases.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:volume
280
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
229-32
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Identification of cytochrome P450IA2 as a human autoantigen.
pubmed:affiliation
Department of Medicine I, University of Mainz, Federal Republic of Germany.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't