Abstract:
OBJECTIVE:The goal was to examine whether microchimerism plays a crucial role in the pathogenesis of biliary atresia; we analyzed the localization of maternal microchimeric cells and their phenotypes. METHODS:Liver biopsy specimens from 8 male infants with biliary atresia and 6 control subjects with other liver diseases were investigated for maternal chimeric cells and their phenotypes through double-staining fluorescence in situ hybridization and immunohistochemical analyses. RESULTS:Significantly larger numbers of maternal XX+ cells were found in the portal area and sinusoids of patients with biliary atresia, in comparison with control patients. In phenotypic analyses of XX+ cells, CD8+ T cells, CD45+ cells, and cytokeratin-positive cells were found, and the numbers and proportions among total CD8+ T cells were significantly higher than those in control patients. CONCLUSIONS:Significantly more maternal chimeric CD8+ T cells in the livers of patients with biliary atresia suggest that maternal immunologic insults represent the underlying pathogenesis in biliary atresia. The findings support the recently postulated mechanisms of alloautoimmune and/or autoalloimmune responses.
journal_name
Pediatricsjournal_title
Pediatricsauthors
Muraji T,Hosaka N,Irie N,Yoshida M,Imai Y,Tanaka K,Takada Y,Sakamoto S,Haga H,Ikehara Sdoi
10.1542/peds.2007-0568subject
Has Abstractpub_date
2008-03-01 00:00:00pages
517-21issue
3eissn
0031-4005issn
1098-4275pii
121/3/517journal_volume
121pub_type
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