Rheumatology Flashcards
NSAID MOA and effects? (Hint: 3)
Inhibit cyclooxygenase and prostalglandin. Anti-pyretic, anti-pain, anti-inflammatory
Steroid MOA?
Upregulate expression of anti-inflammatory proteins and downregulate expression of proinflammatory poroteins
Sulfa class and MOA?
DMARD/Non-biologic.
MOA not well understood. Slows down or stops joint damage.
Antimalarial class and MOA?
DMARD/Non-biologic.
Reduces activation fo dendritic cells and the inflammatory process
Alkylating Agents class and MOA?
DMARD/Non-biologic. Chemotherapy agents.
Interferes with DNA replication.
Antimetabolite class and MOA?
DMARD/Non-biologic.
Interfere with nucleic acid synthesis
Methotrexate which type of drug?
Antimetabolites
Immunosppressant class and MOA?
DMARD/Non-biologic.
Suppress B and T cells (big roles in inflammation)
Tacrolimus which type of drug?
Immunosuppressant
What are DMARD/Biologic drugs?
Genetically engineered proteins originally from human genes. Target specific parts of immune system which fuel inflammation.
TNF-Alpha-Neutralizer class and MOA?
DMARD/Biologic.
Blocks tumor necrosis factor, messenger which drives inflammation.
IL-6-Inhibitor class and MOA?
DMARD/Biologic.
Blocks protein IL-6 from attaching to cells stoking inflammation.
Tocilizumab (Actrema) drug class?
DMARD/Biologic. IL-6-Inhibitor.
B-Cell Biologic class and MOA?
DMARD/Biologic.
Wipes out B-cells involved in inflammation.
T-Cell Biologic class and MOA?
Attaches to surface of T-Cells blocking communication between them
Novel Class class and MOA?
Inhibits Janus Kinase enzymes of inflammation. Targets RA cells from inside, single target.
What cells and where do the Novel Class target?
RA cells from inside.
Is the etiology of Rheumatoid Arthritis known?
Unknown eti
Rheumatoid Arthritis affects joints with what sort of lining?
Synovial lining
Which cell mediates Rheumatoid Arthritis?
T-Cells
Hallmark sx of Rheumatoid Arthritis?
Symmetrical Synovitis
What parts of body most affected by Rheumatoid Arthritis?
Hands and feet
How many joints swollen for how long to make dx for Rheumatoid Arthritis?
2+ swollen joints for 6+ weeks
Which 2 antibodies in Rheumatoid Arthritis?
RF or ACPA Antibodies
Tx for Rheumatoid Arthritis?
Early DMARD is TOC
Etiology of Reactive Arthritis?
Arthritis due infection in other part of body
Which bacteria and what site most common in men with Reactive Arthritis?
Camphylobacter in enteric
Triad in Reactive Arthritis?
Urethritis, Arthritis, Conjunctivitis
Symmetric or Asymmetric arthritis in Reactive Arthritis?
Asymmetric
When do sx appear in Reactive Arthritis?
2-4 weeks post GI or GU infection
Other than joint pain what sx in Reactive Arthritis?
Malaise, fever, fatigue
Can infection be cultures from joints in Reactive Arthritis?
Nope
What is Dx based on in Reactive Arthritis?
History and Physical. No labs.
Gene associated with 30-50% of Reactive Arthritis?
HLA-B27
Tx for Reactive Arthritis?
NSAIDs, intraarticular glucocorticoid injectin, systemic glucocorticoids, non-bio DMARDs (sulfa, methro), bio DMARDs (TNF-I)
Eti of Juvenille Rheumatoid Arthritis?
Unknown
Age of onset in Juvenille Rheumatoid Arthritis?
<16 y/o
Most common rheumatoid disease in kids?
Juvenille Rheumatoid Arthritis
Oligo/Pauci Articular JRA what percent of cases?
50%
How any joints affected in Oligo/Pauci JRA? Which?
≤5 joints. Weight-bearing joints.
What ophthamological complication in Oligo/Pauci Articular JRA?
Anterior Uveitis
How to Oligo/Pauci JRA kids appear?
Appear well
Polyarticular JRA what percent?
30-40%
Polyarticular JRA number of joints and what types?
≥6 joints, any size
Which joints stiff in Polyarticular JRA?
TMJ and cervical joints
Small joints involvement in Polyarticular JRA- symmetrical or asymmetric?
Symmetric small joint involvement
Systemic JRA what percent of cases?
10%
Systemic JRA appear? Fever?
Fever 103+ once or twice a day around same time. Appear ill, chest pain, friction rub.
Rash in Systemic JRA? Where on body?
Evanescent rash, no itch. On trunk and extremities
If JRA dx and tx before 7 y/o vs after 7?
Before 7=good chance of remission
After 7=might spread and stick around
Tx for JRA?
NSAIDS and corticosteroids to reduce joint dmg and prevent loss of function, induce remission and reduce flares.
Intraarticular triancinolone. Methotrex or Lefuomide.
Polymyositis etiology? Who gets most?
Idiopathic inflammatory myopathy. W>M.
>Black population
What happens to muscles in Polymyositis?
CD8 T-cells and macrophages surround and invade healthy muscle fibers and destroy them
Polymyositis develops over how long?
Develops over 3-6 months
Location of muscles affected by Polymyositis? Symmetrical or asymmetrical?
Symmetrical proximal muscle
Two major risks in Polymyositis?
Dysphagia and aspiration
Difficult movements in Polymyositis?
Difficulty kneeling, climbing stairs, get up from chair, hold head up
Two muscles sparred in Polymyositis?
Ocular and facial muscles normal
Any pain or sensation in Polymyositis?
No pain, normal sensation
CPK in Polymyositis?
5-50x elevated
LAD in Polymyositis means what?
Muscle damage
AntiJo-1 and EMG in Polymyositis?
Positive for AntiJo-1. Abnormal EMG in 90%
Test of choice in Polymyositis?
Muscle biopsy. Show focal CD8 T-lymph infiltration.
1st line tx in Polymyositis? If no improvement in 4 weeks? Refractory?
1st line=Prednisone
4 weeks=Immunomodulators
Refractory=Tacrolimus
Polymylalgia Rheumatics (PMR) etiology? Who gets?
Unknown. Effect eldery 72+, mostly women.
What activated in PMR?
Systemic macrophage and T-cell activation
Location of myalgia in PMR? When most stiff?
Proximal myalgia of shoulders and hip girdle. Morning stiff for 1+ hr.
Shoulder pain unilateral or bilateral in PMR?
Initially unilateral then bilateral