Sjogren syndrome and arthritis Flashcards
Sjogren syndrome - definition
autoimmune disorder characterized by destruction of exocrine glands by lymphocytic infiltrates
Sjogren syndrome –> destruction of exocrine glands –> (especially …. glands)
lacrimal and salivary glands
Sjogren syndrome destruction of exocrine glands by
process
lymphocytic infiltrates
type IV hypersensitivity
Sjogren syndrome - age and sex
40-60 (female)
Sjogren syndrome - complications
- dental disorders
- mucosa-associated lymphoid tissue (MALT) lymphoma
- corneal damage
MALT lymphoma secondary to Sjogren syndrome may present as
a unilateral parotid enlargement
Sjogren syndrome - type … hypersensitivity
IV
Sjogren syndrome - clinical findings
- inflammatory joint pain
- xerophthalmia and subsequent corneal damage –> Keratoconjunctivitis sicca
- Xerostomia
- Bilateral parotid enlargment
Sjogren syndrome - primary or secondary disorder?
may be primary or secondary associated with other autoimmune disorder
example of other autoimmune disorder associated with Sjogren syndrome
- RA
- SLE
- systemic sclerosis
Sjogren syndrome - labs
- antinuclear antibodies (anti-ribonucleoprotein antibodies) –> SS-A (anti-Ro), SS-B (anti-La)
- ANA
etiology of osteoarthritis
mechanical - joint wear and tear destroys of articular cartilage
etiology of Rheumatoid arthritis
autoimmune - infl cytokines and cells induce pannus (proliferation tissue) formation –> erodes articular cartilage and bone
osteoarthritis is also called
degenerative joint disease
Rheumatoid arthritis - autoimmune destruction is mediated by
cytokines and III and IV hypersensitivity reactions
joint findings of osteoarthritis
- subchondral cysts
- sclerosis
- osteophytes (bone spurs)
- eburnations of the subchondral bone
- synovitis
- Heberden nodes (DIP)
- Bouchard nodes (PIP)
- 1st carpometacarpal (CMC)
- joint space narrowing
- synovial fluid non inflammatory (less than 2000 WBC)
NO MCP
eburnations are
polished, ivory like appearance of the body
osteoarthritis of the hand - which joints
- DIP (Heberden nodes)
- PIP (Bouchard nodes)
- 1st carpometacarpal (CMC)
NO MCP
joint findings of Rheumatoid arthritis
- pannus formation in joints (MCP, PIP) - NOT DIP or 1st CMC
- subcutaneous rheumatoid nodules (fibrinoid necrosis) - soft tissue swelling
- ulnar deviation of fingers
- sublaxation
- swan neck deformity (rare)
- boutonniere deformity (rare)
- rare DIP involvement
- erosions
- joint space narrowing
- juxtaarticular osteopenia
- Synovial fluid inflammatory (WBC more than 2000)
swan neck deformity
DIP hyperflexion with PIP hyperextension
boutonniere deformity
PIP flexion with DIP hyperextension
predisposing factors of osteoarthritis
- age
- obesity
- joint trauma
- female
predisposing factor of Rheumatoid arthritis
- female (80% vs males)
- +Rheumatoid factor
- Anti-cyclic citrullinated peptide antibody (more specific)
- HLA-DR4
- SILICA exposure
Rheumatoid arthritis - HLA
HLA-DR4
predisposing factor of Rheumatoid arthritis - more specific
Anti-cyclic citrullinated peptide antibody
Rheumatoid factor?
IgM against IgG antibody
osteoarthritis - classic presentation
pain in weight-bearing joint after use (at the end of the day), improving at rest.
Asymmetric joint involvement
Knee cartilage loss begins medially (Bowlegged)
Non-inflammatory. No systemic symptoms
rheumatoid arthritis - classic presentation
Morning stiffness, pain and swelling lasting more than 30 mins and improving with use
symmetric joint involvement. Systemic symptoms
systemic symptoms of Rheumatoid arthritis
- fever
- weight loss
- lymphadenopathy
osteoarthritis - joints
limited number of joints (oligoarticulopathy)
- hips
- lower lumbar spine
- knees
- DIP
- PIP
Heberden nodes - area
DIP
Bouchard nodes - area
PIP
Rheumatoid arthritis - joints
symmetric involvement
1. PIP 2. MCP 3. Elbows 4. Knee 5. ankles
Rheumatoid arthritis can cause ….. in the Knee
Baker cyst
Rheumatoid arthritis - treatment
- NSAID 2. glucocorticoids
- disease-modifying against (methotrexate, sulfasalazine, hydroxychlorooquine, leflunamde)
- biologics (TNF-a inhibitors)
osteoarthritis - treatment
- acetaminophen 2. NSAID
3. intra-articular glucorticoids
Rheumatoid arthritis vs osteoarthritis - according to joint involvement distribution
RA –> symmetrical
Osteoarthritis –> asymmetrical
Rheumatoid arthritis vs osteoarthritis - MCP
RA
Rheumatoid arthritis vs osteoarthritis - DIP
osteoarthritis (Heberden)
rare in RA
Rheumatoid arthritis - x-rays
joint-space narrowing loss of cartilage
osteopenia
Rheumatoid arthritis vs osteoarthritis - increased synovial fluid / wbc?
RA –> increased fluid
WBC –> less than 2000 in osteoarthritis, more in RA
causes of septic arthritis
- Neisseria gonorrhoea (MCC)
- S. aureus (2nd MCC)
- Streptococcus
infectious arthritis - which joints
classically involves a single joint, usually the knee
infectious arthritis - presentation (clinical and labs)
- warm,red, painful joint with limited range of motion
fever - increased WBC and elevated ESR
- Synovial fluid purulent (more than 50000 WBCs)
Gonococcal arthritis is an STD that presents as a
STI either purulent arthritis (eg. knee) or triad of polyarthralgias, tenosynovitis (hand) ,dermatitis (pustules)
Serenegative spondyloarthropathies - types
- Psoriatic arthritis
- Ankylosing spondylitis
- Inflammatory bowel disease
- Reactive arthritis
Serenegative spondyloarthropathies - characteristics
- rheumatoid factor (-)
- HLA-B27 strong association
- Subtypes share variable occurrence of inflammatory back pain (morning stiffness, improves with exercise), peripheral arthrites, enthesitis (inflamed insertion sites of tendons eg. Achilles), dactylitis (sausage fingers), uveitis
Psoriatic arthritis - clinical presentation
- joint pain and stiffness associated with skin psoriasis and nail lesions
- Asymmetric and patchy involvement
- Dactylitis (sausage fingers)
Psoriatic arthritis - joints
axial and peripheral (DIP of hands and feet are MC)
Psoriatic arthritis and psoriasis - relation
Psoriatic arthritis seen in fewer than 1/3 of patients with psoriasis
Psoriatic arthritis - x ray
pensil in cup defority of DIP
Reactive arthritis is also called
Reiter syndrome
Reactive arthritis (Reiter syndrome) - clinical presentation
Classic triad
- Conjunctivitis and anterior uveitis
- Urethritis
- Arthritis
causes of Reactive arthritis (Reiter syndrome)
weeks after GI infection (Shigella, Salmonella, Yersinia, Campylobacter) or chlamydia infection
Ankylosing spondylitis - sex
male
Ankylosing spondilitis causes (clinically) (and involves …)
- Symmetric involvement of spine and sacroiliac joints –> ankylosis (jonint fusion) and bamboo spine (vertebral fusion)
- uveitis
- aortic regurgitation
Ankylosing spondilitis - ankylosis
stiff spine due to fusion of joints
Ankylosing spondilitis - bamboo spine
vertebra fusion
gout is more common in (sex)
males
gout is an (definition)
acute inflammatory monoarthritis caused by precipitation of monosodium urate crystals in joints
gout is an …. caused by ….
acute inflammatory monoarthritis
precipitation of monosodium urate crystals in joints
gout is associated with
hyperuricemia
hyperuricemia can be caused by (name the mechanism and the proportions)
- underexcretion of uric acid (90%)
2. Overproduction of uric acid (10%)
hyperuricemia - causes of underexcretion of uric acid
- idiopathic (largely)
- medications (eg. thiazide diuretics, pyrazinamide)
- Renal insufficiency
hyperuricemia - causes of overproduction of uric acid
- Lesch-Nuchan syndrome
- PRPP excess
- increased cells turnover (eg. tumor lysis syndrome)
- von Gierke syndrome
von Gierke syndrome - deficiency of
Glucose-6-phosphatase
Gout - crystals?
monosodium urate crystals
monosodium urate crystals - characteristics
- needle shaped
- (-) birefringent under polarized light
- blue under perpendicular light
- yellow under paraller light
gout - presentation of the joint
- swollen
- red
- painful
- Asymmetric joint distribution
gout - clinical presentation and classic manifestations
asymmetric joint distribution
swollen, red, painful joint
painful MTP joint of big toe (podagra)
Tophus formation
Tophus formation - area
- external ear
- olecranon bursa (elbow)
- Achilles tendon
tophi?
white, chalky aggregates of uric acid crystals
Acute gout attack tends to occur …
after meal and alcohol consumption
meal can cause acute gout - mechanism
increased DNA/RNA
alcohol consumption can cause acute gout - mechanism
alcohol metabolites compete the same exertion sites in kidney as uric acid –> decreased uric acid secretion
gout treatment
acute –> 1. NSAID (eg. indomethacin) 2. colchicine 3. glucoroticoids
Chronic (preventive) –> xanthine oxidase inhibitors
treatment of acute gout
- NSAID (eg. indomethacin) 2. colchicine 3. glucoroticoids
treatment of chronic gout (prevention)
xanthine oxidase inhibitors:
- allopurinol
- febuxostat
pseudogout present with
pain and effusion with acute infalmmation (pseudogout) and/or chronic degeneration (pseudo-osteoarthritis)
classically affects the knee
pseudogout is caused by
deposition of calcium pyrophosphate crystals within the joint space
x ray of pseudogout
chondrocalcinosis –> cartilage calcification
pseudogout - which joints
usually affects large joints (classically the knee)
pseudogout classically affects the (joint)
knee
pseudogout - sex and age
older than 50
both sexes affected equally
diseases associated with pseudogout
Usually idiopathic
- hemochromatosis
- hyperparathyroidsm
- Joint trauma
pseudogout - crystal characteristics
- basophilic, rhomboid crystals
- weakly birefringent under polarized light
- blue under paraller light
pseudogout vs gout according crystals shape
pseudogout –> rhomboid
gout –> needle shape
pseudogout vs gout according crystals under polarized light
gout –> (-) birefringent
pseudogout –> weakly birefringent
pseudogout vs gout according crystals under paraller light
pseudogout –> bleu
gout –> yellow
seronegative spondyloarthropathies - inflammatory bowel disease ?
Crohn disease and ulcerative colitis are often accompanied by spondyloarthritis
seronegative spondyloarthropathies are more common in
MALES
infectious arthritis is AKA
septic arthritis
pseudogout treatment
acute –> 1. NSAID (eg. indomethacin) 2. colchicine 3. glucoroticoids
Prophylaxis –> colchicine
Extraarticular manifestations of RA include
- rheumatoid nodules (Fibrinoid necrosis with palisading histiocytes) in subcutaneous tissue and lung (+pneumonoconiosis –> Caplan syndrome)
- intestinal lung disease
- Pleuritis
- pericarditis
- anemia of chronic disease
- AA amyloidosis
- Sjogren syndrome
- Carpal tunnel syndrome
- Felty syndrome (neutropenia + splenomegaly)
HLA subtypes are associated with (all types and diseases)
HLA-A3 –> hemochromotosis
HLA-B8 –> Addison disease, myasthenia gravis
HLA-B27 –> seronegative arthritis
HLA-DQ2/DQ8 –> celiac disease
HLA-DR2 –> Multiple sclerosis, Hay fever, SLE, Goodpasture syndrome
HLA-DR3 –> DM1, SLE, Graves disease, Hashimoto thyroditis, Addisson
HLA-DR4 –> RA, DM1, Addison disease
HLA-DR5 –> Pernicious anemia, Hashimoto
Felty syndrome
- RA
- neutropenia
- splenomegaly