Final (SLE AND MS) Flashcards
SLE is different than RA because its a ___________ autoimmune disease
systemic
SLE affects what population more?
women
ethic
What are 5 common themes of SLE?
- auto-reactive B cells
- anti-nucleic acid auto-Ab
- pDCs
- TLR7/9
- IFN-a
where are auto-reactive B cells made in SLE?
extra-follicular B cell activation
How are anti-nucleic acid auto-Ab made in SLE?
cell damage from mutations exposes nucleic acids
How are pDCs involved in SLE?
DNA/RNA released from damaged cells is recognized by pDCs TLR7/9 activating them
How is TLR-7/9 involved in SLE?
recognizes released DNA/RNA from cell damage
How is IFN-a involved in SLE?
produced by activated pDCs when their TLRs recognize RNA/DNA from damaged cells
**all nucleated cells have IFN-a receptors
What is the SLE loop?
production IFN-a from activated pDCs activates formation of auto-reactive B cells and anti-nucleic acid auto-Abs
What induces the formation of auto-reactive B cells and anti-nucleic acid auto-Abs in SLE?
secretion of IFN-a
What is the entry criteria for SLE?
positive ANA
What is ANA?
antibodies against nuclear material
What are 3 ANAs in SLE?
- anti-dsDNA
- anti-histamine
- anti-Smith (RNA)
What is the clinical criteria for SLE?
fever
nephritis
seizures
What is the SLE flare?
waxing and waning of SLE symptoms
During the SLE flare what is elevated?
anti-DNA Ab
TLR-9 activated pDCs
IFN-a
* increased risk of nephritis and cardiac events
What is the immunological criteria for SLE?
decreased C3 and C4
increased anti-dsDNA & anti-Smith Ab