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Abstract 


Immunohistological analysis using monoclonal antibodies in conjunction with histochemical techniques has been applied to lung biopsy material from patients with cryptogenic fibrosing alveolitis. Subsets of lymphoid and non-lymphoid cells have been identified in situ. This analysis showed that the inflammatory cells present were predominantly mononuclear. Most of the lymphoid cells were B lymphocytes, organised into follicles with occasional germinal centre formation. IgM was the major class of immunoglobulin expressed. Both T4+ and T8+ lymphocytes were seen diffusely distributed in the interstitium. The T4+ positive cells were also seen within the B lymphoid follicles. Almost all non-lymphoid cells expressed the phenotype of inflammatory macrophages, but a few also expressed a phenotype characteristic of interdigitating cells. These results suggest that a local B lymphoid immune response is occurring in cryptogenic fibrosing alveolitis. The possibility that a cell mediated immune response is also emerging is discussed.

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Thorax. 1985 Jun; 40(6): 405–411.
PMCID: PMC460088
PMID: 3875162

Immunohistological analysis of lung tissue from patients with cryptogenic fibrosing alveolitis suggesting local expression of immune hypersensitivity.

Abstract

Immunohistological analysis using monoclonal antibodies in conjunction with histochemical techniques has been applied to lung biopsy material from patients with cryptogenic fibrosing alveolitis. Subsets of lymphoid and non-lymphoid cells have been identified in situ. This analysis showed that the inflammatory cells present were predominantly mononuclear. Most of the lymphoid cells were B lymphocytes, organised into follicles with occasional germinal centre formation. IgM was the major class of immunoglobulin expressed. Both T4+ and T8+ lymphocytes were seen diffusely distributed in the interstitium. The T4+ positive cells were also seen within the B lymphoid follicles. Almost all non-lymphoid cells expressed the phenotype of inflammatory macrophages, but a few also expressed a phenotype characteristic of interdigitating cells. These results suggest that a local B lymphoid immune response is occurring in cryptogenic fibrosing alveolitis. The possibility that a cell mediated immune response is also emerging is discussed.

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Selected References

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