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- Document 0724
- DOCN M9620724
- TI Investigation of the complement receptor 3 (CD11b/CD18) in human rectal
- epithelium.
- DT 9602
- AU Hussain LA; Kelly CG; Rodin A; Jourdan M; Lehner T; Department of
- Immunology, United Medical School, Guy's Hospital,; London, UK.
- SO Clin Exp Immunol. 1995 Nov;102(2):384-8. Unique Identifier : AIDSLINE
- MED/96069892
- AB Rectal and cervicovaginal mucosa are common routes of transmission of
- HIV, although the mechanism of transmission is unknown. We have
- investigated human rectal and cervicovaginal epithelia for the
- expression of complement receptors (CR) and cell adhesion molecules
- which may be involved in HIV and other infections. In rectal mucosa, CR3
- was detected in the surface and crypt epithelial cells by
- immunohistology, using MoAbs to CD18 and CD11b in 10 out of 15
- specimens. RNA transcripts encoding both CD11b and CD18 were also
- demonstrated in surface and crypt epithelial cells by in situ
- hybridization. Although CD11b was detected in the epithelial cells in
- three out of the 14 cervicovaginal specimens, we were unable to detect
- CD18. We suggest that expression of the CD11b/CD18 heterodimer might
- facilitate transmission of HIV by enhancing binding of HIV-antibody
- complexes in seminal fluid to epithelial cells. Alternatively, since
- intercellular adhesion molecule-1 (ICAM-1) is a receptor for CD11b/CD18,
- this may promote adhesion between epithelial cells and HIV-infected
- mononuclear cells in seminal fluid.
- DE Antigens, CD18/*METABOLISM Cell Adhesion Molecules/METABOLISM Cervix
- Uteri/IMMUNOLOGY Epithelium/IMMUNOLOGY Female Gene Expression Human
- Immunoenzyme Techniques In Situ Hybridization Intercellular Adhesion
- Molecule-1/METABOLISM Intestinal Mucosa/METABOLISM Macrophage-1
- Antigen/*METABOLISM Rectum/*IMMUNOLOGY RNA, Messenger/GENETICS
- Support, Non-U.S. Gov't Vagina/IMMUNOLOGY JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-