Class II major histocompatibility complex molecule expression on murine eosinophils activated in vivo by Brugia malayi.
نویسندگان
چکیده
The Th-2 response to microfilariae of Brugia malayi in BALB/c mice is associated with peritoneal eosinophilia. These eosinophils had an activated hypodense phenotype in vivo and expressed high levels of the class II major histocompatibility complex (MHC). Interleukin 4 up-regulated the class II MHC, whereas gamma interferon inhibited class II MHC expression on eosinophils.
منابع مشابه
A Brugia malayi homolog of macrophage migration inhibitory factor reveals an important link between macrophages and eosinophil recruitment during nematode infection.
Infections with the helminth parasite Brugia malayi share many key features with Th2-mediated allergic diseases, including recruitment of eosinophils. We have investigated the dynamics of inflammatory cell recruitment under type 2 cytokine conditions in mice infected with B. malayi. Among the cells recruited to the site of infection is a novel population of "alternatively activated" macrophages...
متن کاملBm-CPI-2, a cystatin homolog secreted by the filarial parasite Brugia malayi, inhibits class II MHC-restricted antigen processing
While interference with the class I MHC pathway by pathogen-encoded gene products, especially those of viruses, has been well documented, few examples of specific interference with the MHC class II pathway have been reported. Potential targets for such interference are the proteases that remove the invariant chain chaperone and generate antigenic peptides. Indeed, recent studies indicate that i...
متن کاملA Case of Probable MHC Class II Deficiency with Disseminated BCGitis
Major histocompatibility complex (MHC) class II deficiency is a primary immunodeficiency disease characterized by abnormality of MHC class II molecules surface expression on peripheral blood lymphocytes and monocytes. Clinical manifestations include extreme susceptibility to viral, bacterial, and fungal infections but the immunodeficiency is not as severe as SCID (severe combined immunodeficien...
متن کاملPulmonary inflammation induced by a recombinant Brugia malayi gamma-glutamyl transpeptidase homolog: involvement of humoral autoimmune responses.
BACKGROUND A major allergen from the lymphatic filarial parasite Brugia malayi implicated in the pathogenesis of tropical pulmonary eosinophilia (TPE) has recently been cloned and identified as the homolog of the membrane-bound mammalian enzyme gamma-glutamyl transpeptidase (gamma-GT). Patients with acute TPE show autoreactive antibodies against endogenous gamma-GT from the pulmonary epithelium...
متن کاملMature human eosinophils have the capacity to express HLA-DR.
Human eosinophils are known to lose Ia antigen expression as they mature, and, accordingly, eosinophils obtained from the blood of five eosinophilic donors and three of four normal donors failed to display the major histocompatibility complex class II antigen HLA-DR, as determined by flow cytometry. However, when eosinophils from these nine donors were maintained in culture with recombinant hum...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Infection and immunity
دوره 61 12 شماره
صفحات -
تاریخ انتشار 1993