TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MACROPHAGE ACTIVATION [3 records]

Record 1 2011-02-24

English

Subject field(s)
  • Immunology
DEF

A type of hypersensitivity that (in contrast to immediate hypersensitivity) takes 24 to 72 hours to develop and is mediated by T lymphocytes rather than by antibodies.

OBS

Delayed hypersensitivity is a term used to denote the subset of type IV hypersensitivity involving cytokine release and macrophage activation, as opposed to direct cytolysis but can be used more broadly, even sometimes being used synonymously with type IV hypersensitivity.

Key term(s)
  • cell mediated hypersensitivity

French

Domaine(s)
  • Immunologie
DEF

[Hypersensitivité qui] survient entre 24 et 36 heures après le contact antigène-anticorps.

OBS

L'hypersensibilité différée n'est pas médiée par des anticorps mais par des lymphocytes T chez des sujets non sensibilisés.

OBS

Les exemples d'hypersensitivité différée sont nombreux : réactions cutanées à la tuberculine, aux piqûres d'insectes, à des produits chimiques; réaction de rejet, etc.

Spanish

Campo(s) temático(s)
  • Inmunología
Save record 1

Record 2 1996-11-06

English

Subject field(s)
  • Biochemistry
  • Genetics
CONT

Activation of macrophages by bacterial lipopolysaccharide(LPS) induces transcription of genes that encode for proinflammatory regulators of the immune response. Previous work has suggested that activation of the transcription factor activator protein 1(AP-1) is one LPS-induced event that mediates this response. Consistent with this notion, we found that LPS stimulated AP-1-mediated transcription of a transfected reporter gene in the murine macrophage cell line RAW 264. 7. As AP-1 activity is regulated in part by activation of the c-Jun N-terminal kinase(JNK), which phosphorylates and subsequently increases the transcriptional activity of c-Jun, we examined whether LPS treatment of macrophages resulted in activation of this kinase.

OBS

PNAS Activation of c-Jun N-terminal kinase in bacterial lipopolysaccharide-sti. Proceedings of the National Academy of Sciences Volume 93, Number 07; Pages: 2774-2778 Immunology.

French

Domaine(s)
  • Biochimie
  • Génétique
OBS

JNK

Spanish

Save record 2

Record 3 1993-01-08

English

Subject field(s)
  • Immunology
DEF

An enhanced bactericidal activity of macrophages due to any increase in the number of lysosomes and in the secretion of microbicidal products. It is induced, in association with specific delayed hypersensitivity, by various intracellular parasites, such as Listeria and Salmonella.

French

Domaine(s)
  • Immunologie
DEF

Augmentation des fonctions des macrophages sous l'action de médiateurs produits par les lymphocytes T sensibilisés en présence de l'antigène (comme le MAF, macrophage activation factor). Il faut distinguer cette activation «fonctionnelle» de l'augmentation du nombre et peut-être de l'activité des macrophages péritonéaux consécutive à une injection de substances irritantes comme le thioglycolate de sodium, parfois aussi désignée sous le terme d'activation.

Spanish

Save record 3

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