Thu test - inflammation Flashcards
What suffix does a word end if it indicates Inflammation? Abnormal or diseased condition?
Inflammation -itis
Abnormal or diseased condition - -osis
What is pyroptosis?
lytic programmed cell death
associated inherently with inflammation
differences of hyperplasia, hypertrophy, metaplasia and dysplasia?
Hyperplasia: cells multiplying - greater growth
hyperplasia enlargement (of an organ, etc)
metaplasia - abnormal replacement of one cell type to another
dysplasia - abnormal growth thats not following normal rules
4 basic types of tissues?
CT, Epithelial, Muscle, Nerve
What’s the first response of the body to an injury?
Inflammation
What does the acute phase of inflammation constitutes in?
redness, swelling, heat, pain and altered function. It is self perpetuating
What’s a biological marker of inflammation?
CRP - C-reactive Protein. Elevated CRP is a risk factor for several chronic inflammatory diseases.
What makes the inflammation go down from the acute phase?
Emergence of Active Specialized Proresolving mediators (SPM) - non-immunosuppressive process
Chronic Inflammatory Diseases 2 signs?
Inflammatory Cell Infiltrates
Vascular & Tissue Damage
irreversible vascular & tissue damage
Acute inflammation 2 phases?
Acute inflammation is an immunovascular
response to an inflammatory stimulus
vascular phase (movement of plasma fluid, containing important proteins such as fibrin and immunoglobulins (antibodies), into the inflamed tissue) that occurs first, followed by a
cellular phase involving immune cells (more
specifically myeloid granulocytes in the acute
setting).
Which cells are mostly present in Chronic inflammation?
mononuclear cells - lymphocytes
particular characteristic of Chronic inflammation?
simultaneous destruction and partial healing of the tissue from the inflammatory process
What do inflammasomes do? What are they activated by?
Inflammasomes are implicated in the inflammation responses in connective tissues diseases (autoinflammation)
Activated by PAMPs and DAMPs
Inflammasomes → Caspase 1 → inflammatory cytokines (IL-1B and IL-18)
result in productions of CRP
can lead to pyroptosis and autophagy
Chronic inflammation causes more of what molecules to be secreted?
more PGE, IL-1B, TNF-a, and other proinflammatory molecules
What can be a good marker of systemic inflammatory burden?
CRPs
IL-18
IL-1B
What are the two mediators of acute inflammation which prevent it from becoming a chronic inflammatory disease?
Specialized Proresolving mediators (SPM)
appear at the height of inflammation and stop and clean it up
LIPOXINS are derived from Arachidonic acid
RESOLVINS (EPA, DHA) are derived from omega-3 fatty acid
Why diseases of aging have a common link with chronic inflammation?
They all are connected to inflammatory cell infiltration and the ongoing inflammatory response in the tissues resulting in vascular and tissue damage.
what are the treatments of inflammatory conditions?
COX Inhibitors (ibuprofen, flurbiprofen, Celecoxibs)
TNFa Antagonists (etaneracept, inflixamab)
Steroids (cortisone, prednisone, methyl prednisolone)
Statins (atorvastatin, fluvastatin, pravastatin)
The innate inflammatory process resolves and heals. However, if you lack ______ and _______, then the inflammatory process continues with vasculitis and the adaptive immune response with lymphocytic infiltration, immune complexes, and tissue damage or destruction
lipoxins
resolvins
Common connective tissue disease categories and examples?
Arthritis- Osteoarthritis, rheumatoid, Gout, juvenile idiopathic arthritis also call juvenile rheumatoid A, Spondyloarthropathies including Reactive Arthritis, Infective Arthritis,
Arthritis plus (only listed ones he covers)
Systemic Connective tissue diseases(with blood vessel inflammation too)- Lupus, Sjogrens
First degree Vasculitis- Large vessel-Temporal, Takayasu, Medium vessel-Kawasaki, small vessels-ANCA
Others- Myofascial pain
What is Rheumatoid Arthritis? Who gets it and prevalence?
Systemic, chronic inflammatory autoimmune disease that attacks multiple tissues (joints mostly)
Female:Male :: 5:1
Prevalence of 1%
Where does Rheumatoid A starts and what joints? What triggers it and what marker is present in 80% of the cases?
- Bilateral start in just a few joints but progresses.
- Wrists, hand, elbows, shoulders, knees and ankles.
- Unknown trigger, genetic predilection
- Rheumatoid Factor is a marker in 80% of cases
Describe the joint in rheumatoid arthritis? Other symptoms?
- Synovitis (inflammation of joint)- Chronic inflammation in the synovial fluid leads to synovial hyperplasia and pannus/overgrowth formation.
- Subcutaneous rheumatoid nodules/Granulomas
- Pleural/pericardial effusions
- Vasculitis
- Swan Neck, Boutonniere deformities
What is Osteoarthrosis (Osteoarthritis)? Prevalence? Associations?
´aka Degenerative Joint Disease´WEAR and TEAR´Ignore the “itis” in the name (it is an “..osis”)
Cartilage in the joint gets damaged, bones rub together, bony growths/spurs happen, cartilage fragments in joint fluid
- Most common disabling joint disease- no sex preference
- Most over 65
- Idiopathic etiology, but associated with Obesity and Trauma
Differences between Osteoarthosis and Rheumatoid Arthritis?
Osteoarthosis - bone ends rub together
- Wear and Tear
- Pain worse at night
- Morning stiffness gone with moving
- Large weight bearing joints (and hands)
- Unilateral
- Heberden and Bouchard’s nodes
Rheumatoid Arthritis - swollen inflamed synovial fluid
- Inflammatory
- Morning Pain and Stiffness often > 1 hr
- Swan neck and boutonniere deformity of hands
- Bilateral
- Pannus formation
- Rheumatoid nodules
Causes of acute, chronic and viral infectious arthritis?
Acute: Staphylococcus aureus, HIB, Gonococcus
Chronic: Lyme disease, Tuberculosis
Viral: Parvo, Hepatitis B & C, Epstein Barr,