Abstract:
:We used immunohistochemistry to assess the role of humoral and cellular factors in endoneurial microangiopathy and epineurial vasculitis in 15 nerve biopsies of patients with axonal neuropathy and monoclonal or mixed cryoglobulinemia (CG). Deposition of immunoglobulins and cytolytic complement was detected in endoneurial capillaries of patients with mixed CG. Epineurial inflammatory infiltrates containing beta2-integrin-positive lymphocytes and monocytes surrounded arterioles expressing cell adhesion molecules, thus suggesting a cell-mediated pathogenesis of the epineurial vasculitis. On the other hand, the absence of immune complex deposition and polymorphonuclear elements suggests a minor role for the humoral mechanisms in the formation of the vasculitic lesions. This study indicates that both cell-mediated mechanisms and immune complexes/cryoglobulins are involved, although at different levels, in the pathogenesis of CG neuropathy.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Bonetti B,Invernizzi F,Rizzuto N,Bonazzi ML,Zanusso GL,Chinaglia G,Monaco Sdoi
10.1016/s0165-5728(96)00191-9subject
Has Abstractpub_date
1997-03-01 00:00:00pages
145-54issue
1-2eissn
0165-5728issn
1872-8421pii
S0165-5728(96)00191-9journal_volume
73pub_type
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