[Activation of T-lymphocytes in Crohn disease and in ulcerative hemorrhagic rectocolitis. Therapeutic implications]. / Activation des lymphocytes T dans la maladie de Crohn et dans la rectocolite ulcéro-hémorragique. Implications thérapeutiques.
Pathol Biol (Paris)
; 44(4): 287-92, 1996 Apr.
Article
em Fr
| MEDLINE
| ID: mdl-8763593
ABSTRACT
Inflammatory bowel disease (IBD) encompasses two forms of intestinal inflammation ulcerative colitis and Crohn's disease. Besides abnormalities of immunoglobulins production and complement activation, T lymphocytes play an important role in pathogeny of these diseases. Although T-cells number is increased in intestinal mucosa of such patients, CD4/CD8 ratio of T lymphocytes subsets is normal in mucosa. Activated T-cells expressing interleukin-2 receptors (CD25) are increased in lamina propria from patients with IBD. Cytokines induce abnormal expression of class II antigens of major histocompatibility complex by epithelial cells which may act as antigen presenting cells to CD4 T-cells. Better understanding of pathogenic mechanisms in IBD might justify new immunosuppressive therapeutics to treat these patients.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ativação Linfocitária
/
Colite Ulcerativa
/
Doença de Crohn
/
Antígenos CD4
Tipo de estudo:
Etiology_studies
Limite:
Humans
Idioma:
Fr
Revista:
Pathol Biol (Paris)
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
França