Innate Immunity in Inflammatory Disease Flashcards
Which TLRs are on the endosomal membrane?
TLR3 (dsRNA), TLR7 (ssRNA), TLR9 (CpG DNA)
Which TLRs are on the cell membrane?
TLR1/2 (triacyl lipopeptides), TLR4 (LPS), TLR5 (flagellin), TLR6/2 (diacyl lipopeptides)
What does TLR9 recognise?
CpG DNA- viruses
What does TLR4 recognise?
LPS- mainly G-ve bacteria
What does TLR5 recognise?
Flagellin
What is the function of IL-1beta?
Activates vascular endothelium and lymphocytes
Local tissue destruction
Increases access of effector cells
Early mediator
What are the systemic effects of IL-1beta?
Fever, production of IL-6
What is the function of TNF-alpha?
Activates vascular endothelium, increases permeability.
Increases IgG, complement, cells, fluid drainage to lymph nodes.
Early mediator
What are the systemic effects of TNF-alpha?
Fever, mobilisation of metabolites, shock.
What is the function of IL-6?
Lymphocyte activation, increased antibody production.
What are the systemic effects of IL-6?
Fever, acute-phase protein production.
What is the function of chemokine CXCL8?
Recruits neutrophils, basophils, T cells
What is the function of IL-12?
Activates NK cells.
Induces differentiation of CD4 T cells into TH1 cells.
Which IL is important for neutrophil recruitment by Th17 cells?
IL-17
Which chemokines primarily allow movement of neutrophils?
IL-8/CXCL8.