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- Document 0372
- DOCN M9610372
- TI Interleukin 4 and T helper type 2 cells are required for development of
- experimental onchocercal keratitis (river blindness).
- DT 9601
- AU Pearlman E; Lass JH; Bardenstein DS; Kopf M; Hazlett FE Jr; Diaconu E;
- Kazura JW; Department of Medicine, Case Western Reserve University,;
- Cleveland, Ohio 44106, USA.
- SO J Exp Med. 1995 Oct 1;182(4):931-40. Unique Identifier : AIDSLINE
- MED/96018793
- AB Inflammation of the corneal stroma (stromal keratitis) is a serious
- complication of infection with the nematode parasite Onchocerca
- volvulus. Because stromal keratitis is believed to be immunologically
- mediated in humans, we used a murine model to examine the role of T
- cells and T helper cell cytokines in the immunopathogenesis of these eye
- lesions. BALB/c mice immunized subcutaneously and injected
- intrastromally with soluble O. volvulus antigens (OvAg) developed
- pronounced corneal opacification and neovascularization. The corneal
- stroma was edematous and contained numerous eosinophils and mononuclear
- cells. Stromal keratitis in immunized mice was determined to be T cell
- dependent based on the following observations: (a) T cell-deficient nude
- mice immunized and injected intrastromally with OvAg fail to develop
- corneal pathology; and (b) adoptive transfer of spleen cells from
- OvAg-immunized BALB/c mice to naive nude mice before intrastromal
- injection of OvAg results in development of keratitis. OvAg-stimulated
- lymph node and spleen cell cytokine production was dependent on CD4
- cells and included interleukin (IL)-4 and IL-5, but not interferon
- gamma, indicating a predominant T helper type 2 cell-like response.
- Inflamed corneas from immunized BALB/c mice and from reconstituted nude
- mice had greatly elevated CD4 and IL-4 gene expression compared with
- interferon gamma. Mice in which the IL-4 gene was disrupted failed to
- develop corneal disease, demonstrating that IL-4 is essential in the
- immunopathogenesis of O. volvulus-mediated stromal keratitis.
- DE Animal Antigens, Helminth/IMMUNOLOGY Base Sequence Cornea/BLOOD
- SUPPLY/PATHOLOGY Corneal Opacity Female Immunotherapy, Adoptive
- Interleukin-4/DEFICIENCY/GENETICS/*METABOLISM Keratitis/CHEMICALLY
- INDUCED/*IMMUNOLOGY/PATHOLOGY Mice Mice, Inbred BALB C Mice, Inbred
- C57BL Mice, Nude Molecular Sequence Data Neovascularization,
- Pathologic/PATHOLOGY Onchocerciasis, Ocular/*IMMUNOLOGY/PATHOLOGY
- Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S. Th2
- Cells/*IMMUNOLOGY JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-