Abstract:
:Ws/Ws rats have a small deletion of the c-kit gene, and are deficient in both mucosal and connective tissue-type mast cells. In this study, the role of mucosal type mast cells (MMC) in the development of intestinal ischaemia-reperfusion injury was investigated in Ws/Ws rats. Autoperfused segments of the jejunum were exposed to 60 min of ischaemia, followed by reperfusion for various time periods. The epithelial permeability was then assessed by the 51Cr-EDTA clearance rate. In the control (+/+) rats, the maximal increase in mucosal permeability was achieved at 45 min of reperfusion. In contrast, this increase was significantly and potently attenuated in the Ws/Ws rats. Mucosal alkaline phosphatase activity decreased in the control (+/+) rats, but was not altered in the Ws/Ws rats. There were no differences in mucosal myeloperoxidase activity, indicating that granulocytes did not contribute to tissue injury. These results provide direct evidence for the role of mast cells in the pathogenesis of intestinal ischaemia-reperfusion injury.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Andoh A,Kimura T,Fukuda M,Araki Y,Fujiyama Y,Bamba Tdoi
10.1046/j.1365-2249.1999.00851.xsubject
Has Abstractpub_date
1999-04-01 00:00:00pages
90-3issue
1eissn
0009-9104issn
1365-2249journal_volume
116pub_type
杂志文章abstract::Isoelectric focusing of serial bleeds from patients with Hashimoto's thyroiditis was carried out and thyroglobulin (Tg) autoantibodies visualized using 125I-labelled Tg followed by autoradiography. Although the spectrotype of these antibodies was polyclonal and varied from patient to patient, each individual's spectro...
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