Adhesion molecules in lymphomatoid granulomatosis.
The expression of some adhesion molecules of the integrin family and their ligands was investigated in skin biopsies from a patient with lymphomatoid granulomatosis (LG), who at onset presented cutaneous lesions followed by lung and brain involvement. The angiocentric and angiodestructive skin infiltrate consisted mainly of T helper 'memory' cells (CD2+, CD3+, CD4+, CD5+, CD7+, CD45RO+) with a variable expression of activation antigens (CD25-, CD38+, CD71+, HLA-DR+) and 20% Ki67+ (nearly all atypical cells). T cells highly expressed alpha 3 beta 1 and alpha 5 beta 1 integrins, along with integrins of the beta 2 family. A modification of the expression pattern in laminin and collagen IV and an increased expression of tenascin and fibronectin were also observed.
Savoia
P
P
Clinica Dermatologica dell'Università degli Studi di Torino, Italia.
Novelli
M
M
Bertero
M
M
Bernengo
M G
MG
D015815:Cell Adhesion Molecules / Q000032:analysis*; D006651:Histocytochemistry; D006801:Humans; D008230:Lymphomatoid Granulomatosis / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged
D015815:Cell Adhesion Molecules