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  • Title: Different immunophenotypes in Buerger's disease.
    Author: Kurata A, Machinami R, Schulz A, Fukayama M, Franke FE.
    Journal: Pathol Int; 2003 Sep; 53(9):608-15. PubMed ID: 14507318.
    Abstract:
    Recently, we reviewed the morphology of 31 specimens of thromboangiitis obliterans (TAO, Buerger's disease) in a multivariate analysis and showed that certain novel features of the affected vessels are different from arteriosclerosis obliterans (ASO) and thromboembolism. However, the pathogenic concept of TAO is still controversial. We applied immunohistochemistry to 58 amputated lower extremities and five autopsy controls. At specific sites of the diseased vessels, different cellular components were immunotyped by CD3, CD4, CD20, CD31, CD68, actin and desmin. These results were carefully compared among different diagnostic groups of vasoocclusive lesions by statistical methods. Some unique characteristics of TAO were identified when compared with ASO or thromboembolism. Consistent with a primary inflammatory and immunogenic lesion, lymphocytes and especially CD4+ T cells emerged significantly in TAO vessels and their adventitia. In the subset of definite TAO cases defined by all clinical criteria, the linear arrangement of macrophages, and B- and T-lymphocytes along vascular elastic fibers was the most striking additional finding, suggesting elastic fibers are an important immunogen. However, this feature was not apparent in closely related cases, otherwise similar to TAO and different from ASO and thromboembolism. Thus, our results indicate a heterogeneous group of TAO diseases, suggesting that damage to elastic fibers may be a secondary change to primary inflammation.
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