Leukocyte transfusion-associated granulocyte responses in a patient with X-linked hyper-IgM syndrome.
J Clin Immunol
; 18(6): 430-9, 1998 Nov.
Article
en En
| MEDLINE
| ID: mdl-9857288
ABSTRACT
X-linked hyper-IgM syndrome (XHIM) is a severe congenital immunodeficiency caused by mutations in CD154 (CD40 ligand, gp39), the T cell ligand for CD40 on B cells. Chronic or cyclic neutropenia is a frequent complicating feature that heightens susceptibility to severe infections. We describe a patient with a variant of XHIM who produced elevated levels of serum IgA as well as IgM and suffered from chronic severe neutropenia. Eight of ten leukocyte transfusions with cells from a maternal aunt, performed because of mucosal infections, resulted in similar episodes of endogenous granulocyte production. Transfection studies with the mutant CD154 protein indicate that the protein is expressed at the cell surface and forms an aberrant trimer that does not interact with CD40. The data suggest that allogeneic cells from the patient's aunt, probably activated T cells bearing functional CD154, may interact with CD40+ recipient cells to produce maturation of myeloid precursors in the bone marrow.
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Base de datos:
MEDLINE
Asunto principal:
Cromosoma X
/
Inmunoglobulina M
/
Transfusión de Leucocitos
/
Granulocitos
/
Hipergammaglobulinemia
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
J Clin Immunol
Año:
1998
Tipo del documento:
Article