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124 Cards in this Set

  • Front
  • Back
Lupus is mostly a disease of what demographic group?
Young women (age 15-45 at diagnosis)
Pathologic lesions in lupus involve what two primary things?
Immune complex deposition

Vascular involvement
What autoantibodies are present in lupus?
Anti-nuclear (ANA) in almost ALL patients
increased frequency of HLA-
____ and ____ in lupus.
DR2 & DR3
Organ systems most frequently involved in lupus
skin and MSK
Clinical manifestations of lupus
HIGHLY variable, vague in some patients - fatigue, arthralgia/myalgia, fever, weight loss common
Organs systems which when affected by lupus carry the worst prognosis
Renal disease
Severe CNS involvement
Discoid lupus: defn.
raised plaques or papules may lead to chronic scarring, pigment changes, irreversible alopecia
best recognized cutaneous lesion in lupus
Malar "butterfly" rash
Cutaneous manifestations of lupus
50% at presentation, 75% eventually

Photosensitivity (all exacerbated by sun)

Malar rash

Discoid

Alopecia

Mucous membrane ulcers
MSK manifestations of lupus
Most common: symmetric polyarticular arthritis/arthralgia involving hands, wrists, knees, ankles

Virtually indistinguishable from rheumatoid arthritis in early disease.
Jaccoud's arthropathy: defn
deforming, non-erosive arthritis in lupus
Serositis: defn
inflammation of serosa, common in lupus
How does Serositis normally present in lupus? Eventually?
pleuritic chest pain or pericarditis is most common

Eventually 30% will experience pleural or pericardial effusions. Can lead to tamponade.
Renal disease in lupus: characteristics (LUPUS NEPHRITIS)
Proteinuria and/or hematuria

Common but variable in severity.

Active sediment (cellular cast + protein) suggest worse disease.
Which pattern on renal biopsy has the WORST prognosis in lupus?
Diffuse proliferative glomerulonephritis
Predictors of worse renal disease
Positive anti-dsDNA antibodies
Low complement levels (C3 and C4)
CNS disease in lupus: what is seen?
Most serious: psychosis and seizures

Also see central lesions, peripheral neuropathies, headaches, depression, all sorts of stuff

Diagnosis is one of exclusion
Libman-Sacks endocarditis: defn
Sterile vegetations that can lead to valve failure. Immune complex deposition. Common in lupus.
Sjogren's syndrome: defn
dry eyes and mouth, salivary enlargement due to sialadenitis
hematologic manifestations of lupus
1) CYTOPENIAs are common.

2) anemia: 2 kinds

3) Hypercoagulable state
Antiphospholipid syndrome: defn
When labs are positive for lupus anticoagulant, anticardiolipin, or β2glycoprotein antibodies twice 12 weeks apart + clinical event (thrombosis or miscarriage)
Antiphospholipid syndrome: assns with other diseases
Can be primary (no underlying disease) or secondary (ie, LUPUS)
What autoantibodies are present in SLE?
Anti-Nuclear Antibodies (ANA) in 95+%

Anti-dsDNA and anti-Smith antibodies: more specific but less sensitive

Anti-RNP

Anti-SSA and SSB
Anti-SSA and SSB antibodies associated with what?
Sjogren's syndrome

Neonatal lupus

Congenital heart block
(when the antibodies cross placenta, can affect baby)
neonatal lupus: defn
When autoantibodies from mothers (specifically anti SSA and SSB) cross placenta and attack skin (and potentially heart nodes) of baby
What two types of anemia are seen in lupus?
1) Anemia of chronic inflammatory disease

2) Autoimmune hemolytic anemia (Coombs test+)
Criteria for dx of lupus:
4 of 11 cardinal symptoms required
What are the 11 symptoms required for SLE dx?
1) Malar rash
2) Discoid rash
3) Photosensitivity
4) Mucositis
5) Arthritis
6) Serositis
7) Renal disorder
8) Neurologic disorder
9) Hematologic disorder
10) Immunologic disorder
11) Antinuclear antibody: +ANA test
Categories of drugs used for SLE
NSAIDs

Antimalarial drugs

Corticosteroids

Immunosuppressants

Biologic agents (monoclonal antibodies)
Common causes of early death from lupus
Active renal, neurologic, and other multisystem illness.

ESRD requiring transplant and dialysis a big problem.
Common causes of later (long time from diagnosis) death from lupus
Premature atherosclerotic disease.
Systemic sclerosis is aka
Scleroderma
Characteristics of scleroderma
rare, slowly progressive with fibrosis and vascular lesions.
Two types of systemic sclerosis
Limiting (CREST) syndrome

Diffuse
What drugs commonly cause drug-induced lupus?
INH
minocycline
procainamide
hydralazine
anti-epileptics
anti-TNF agents
microchimerism: defn
most common form is fetomaternal microchimerism (also known as fetal cell microchimerism or fetal chimerism) whereby cells from a fetus pass through the placenta and establish cell lineages within the mother.

Similar to graft-vs-host disease.

May be etiologic factor in systemic sclerosis
What is pathogenesis of systemic sclerosis?
Fibrosis in vessels, skin, visceral organs

Vascular intimal hyperplasia and fibrosis
What is CREST syndrome?
A more limited form of systemic sclerosis:

C- calcinosis
R- Raynaud’s
E- esophageal disorder
S- sclerodactyly
T- telangectasia
sclerodactyly: defn
thickening and tightening of fingers with contracture
What is the Esophageal disorder in CREST syndrome?
Esophageal hypermotility and loss of LES pressure --> reflux, dysphagia, stricture formation
Most frequent cause of death in scleroderma
Lung involvement: alveolitis and PROGRESSIVE PULMONARY FIBROSIS
Scleroderma renal crisis: defn
The acute onset of renal failure.
There is usually an abrupt onset of moderate to marked hypertension (although some patients remain normotensive).

A urine sediment that is usually normal or reveals only mild proteinuria with few cells or casts.
Scleroderma renal crisis: treatment
Blood pressure control with angiotensin-converting enzyme (ACE) inhibitors with gradual reduction of malignant hypertension is the cornerstone of treatment.
Only situation where ACE inhib should be used in acute renal insufficiency
Scleroderma renal crisis (it's characterized by HIGH RENIN)
Scleroderma: prognosis and outcome
CREST patients fare better, but pulmonary htn is BAD.

Diffuse scleroderma: 50% mortality at 5 years.

poor prognostic markers: renal disease, cardiac involvement, progressive pulmonary disease.
Polymyositis and Dermatomyositis: defn
idiopathic autoimmune inflammatory diseases characterized by inflammation of the muscles and the skin.
What drug class is associated with Polymyositis and Dermatomyositis?
statins
Polymyositis and Dermatomyositis: clinical features
1) Muscle weakness (proximal): elevated muscle enzymes, showing evidence of necrosis and irritation

2) Rashes

3) Other features, including pulmonary disease (interstitial pattern), cutaneous vasculitis and calcinosis
When an older adult is dxed with Polymyositis and Dermatomyositis, what should you think of?
Often associated with MALIGNANCY in older adults
Some characteristic rashes in Dermatomyositis
Periorbital edema
Violet rash on eyelids (heliotrope rash)
Scaly rash dorsal knuckles (Gottron’s papules)
Shawl sign
Polymyositis and Dermatomyositis: how to dx?
Muscle weakness, rash, muscle enzymes, EMG, muscle biopsy
Secondary Sjogren’s syndrome commonly seen in what diseases?
RA and SLE
Typical symptoms of Sjogren's syndrome
Typical symptoms
Dry eyes
Dry mouth - xerostomia
Salivary gland enlargement
What other disease are Sjogren's syndrome patients at risk for?
Non-Hodgkins lymphoma - risk is 44x that of healthy population
General pathogenesis of all vasculitis
Vessel-based inflammation .

Leukocytes in vessel walls --> damage (loss of integrity, vessel lumen occlusion) --> bleeding and tissue ischemia/necrosis
T/F Vasculitis may be a primary process or secondary to another underlying disease
T
What are the general, simple classifications of vasculitis?
1) Small-vessel
2) Medium-vessel
3) Large-vessel
4 Small-Vessel Vasculitides
1) Hypersensitivity vasculitis
2) Henoch-Schonlein purpura (HSP)
3) Wegener's granulomatosis
4) Microscopic polyangiitis
Hypersensitivity vasculitis
: clinical characteristics
Mostly cutaneous: purpura or maculopapular rash

Often associated with a drug/medication
Henoch-Schonlein purpura (HSP): : clinical characteristics
Similar to hypersensitivity vasculitis but see deposition of IgA on skin or renal biopsy

Age <20 years at onset

Findings: palpable purpura, bowel angina, GI bleed, hematuria
Wegener’s Granulomatosis: defn
Granulomatous inflammation of arteries (small and medium), venules, and arterioles

Classic triad of upper airway, lower airway, and renal disease.
Wegener’s Granulomatosis: classic triad
Classic triad of upper airway, lower airway, and renal disease.
Wegener’s Granulomatosis: male:female ratio
more men than women
Wegener’s Granulomatosis: what is seen on renal biopsy?
pauci-immune (no Ig deposition) necrotizing glomerulonephritis
Other than the classic triad, what other sx can be seen in Wegener’s Granulomatosis?
Ocular disease
Cutaneous
Arthritis
Neurologic
Wegener’s Granulomatosis: how to diagnose?
1) Traditional approach Biopsy showing granulomatous arteritis
2) Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA
What are the lung findings in Wegener’s Granulomatosis?
See cavitary pulmonary lesions
What autoantibodies are seen in Wegener's?
Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA
Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA: are they more specific or sensitive?
More SPECIFIC - that is, if they're positive, they're very likely to have it.
Polyarteritis Nodosa (PAN): defn
medium-vessel, systemic necrotizing vasculitis
Polyarteritis Nodosa (PAN): clinical presentation
fever, malaise, weightloss
Polyarteritis Nodosa (PAN): association with what other disease?
hepB
Polyarteritis Nodosa (PAN): preferentially affects what part of medium-sized vessels?
Bifurcations. It leads to aneurysms
Polyarteritis Nodosa (PAN): what other organs involved?
In order of most to least common:

Arthritis, Peripheral nerve (wrist and foot drop), renal, cutaneous, ocular, ENT, testicular (rare)
Takayasu’s Arteritis : defn
Chronic arteritis involving aorta and its branches, most common in young women (<40) of Asian descent
Takayasu’s Arteritis : clinical presentation
malaise, arthralgias, fevers

headaches, dizziness

ARM CLAUDICATION due to upper extremity involvement

Decreased pulses in almost all patients -- "Pulseless disease"

HTN due to aortic/renal involvement
Takayasu’s Arteritis : gold standard of diagnosis
Arteriogram of aortic arch
Giant Cell Arteritis: aka
Temporal arteritis
Giant Cell Arteritis: defn
Systemic inflammatory arteritis.

Most commonly involves the branches of the arteries originating from the aortic arch.
Polymyalgia Rheumatica (PMR): defn
Syndrome characterized by diffuse aching of shoulder and hip girdles
Which two large-vessel arterites are confined to elderly populations?
Giant cell arteritis and polymyalgia rheumatica
Giant Cell Arteritis: clinical features
1) Headache
2) Weight loss
3) Fever
4) PMR
5) Visual disturbance
6) Jaw claudication (pain)
Major risk of giant cell arteritis (GCA)
blindness
Giant Cell Arteritis: when should it be suspected?
Patients over age 50, new onset HA, visual disturbance, jaw claudication, elevated sed rate (ESR)
Giant Cell Arteritis: gold standard to dx
temporal artery biopsy : will see infiltration with chronic mononuclear inflammatory cells with/out giant cells, and destruction of internal elastic lamina

See skip lesions too, so bx might not pick it up.
Polymyalgia Rheumatica: when should it be suspected?
Patients >50, new onset aching and stiffness esp in hips and shoulders, elevated ESR, dramatic improvement with low dose steroid.
Cryoglobulinemia: defn
small vessel vasculitis, mostly cutaneous involvement - secndary to other disease

associated with HepC infection or paraproteinemia

Thrombosis and plugging of vessels --> ischemia of digits or glomerulonephritis in kidneys
Cryoglobulinemia: associated with what disease?
HepC
Vasculitis: Therapy in general
STEROIDS. Mostly high dose except PMR
Cryoglobulins : defn
antibodies which precipitate in the cold
Difference between COX1 and COX2
COX1: present in all tissues

COX2: present in brain and kidney and is induced in most tissues during inflamm and injury.
Functions of thromboxane A2
Induce platelet aggregation and smooth muscle contraction
thromboxane A2: made by COX1 or COX2?
COX1
Aspirin: MOA
Irreversibly inhibits COX1 and COX2
NSAIDS: MOA (other than aspirin)
reversibly inhibit COX1 and COX2
celecoxib: MOA
COX2 selective inhibitor (protects GI mucosa and induce platelet aggregation)
zileuton: MOA
5 lipoxygenase enzyme inhibitor. Produces bronchiolar dilation
zafirlukast and montelukast: MOA
competitive Leukotriene receptor blockers
How do PGs affect nervous system?
In general, they're thought to be modulators of neuronal activity. They can increase or decrease release of NTs.

Can cause fever, sensitize pain receptors, etc.
_________ binds to marijuana receptors and causes analgesia and decreased locomotion
Anandamide.
PGs that are produced by platelets and cause aggregation
PGG2, PGH2, TXA2
PGs that inhibit gastric acid secretion and increase GI mucous secretion.
PGE2 and PGI2
NF&kappa;B: what does it do?
When induced, it stimulates formation of pro-inflammatory molecules
Basis of aspirin's anti-thrombotic effects
By inhibiting COX1, it prolongs bleeding time by decreasing ability of platelets to aggregate --> prevents formation of thromboxane
Salicylism: defn and symptoms
mild chronic salicylate poisoning.

Headache, dizziness, tinnitus, difficulty hearing, dim vision, mental confusion, lassitude, drowsiness, etc.

Usually stop when salicylate dose is lowered.
Aspirin hypersensitivity: symptoms
AKA Aspirin allergy.

rhinorrhea, urticaria, bronchospasm, hypotension, vasomotor collapse. Tx with epinephrine.
Diflunisal: MOA
salicylate, competitive inhibitor of COX.

More potent anti-inflam than aspirin but no anti-pyretic fx.
Diflunisal: Use
RA, sprains, OA
Sulfasalazine: MOA
Poorly absorbed in GI tract sulfonamide. Anti-microbial and anti-inflammatory. Used to treat inflamm bowel disease but also RA and ankylosing spondylitis
Sulfasalazine: Use
Used to treat inflamm bowel disease but also RA and ankylosing spondylitis
Olsalazine: what is it?
dimer of 5-aminosalicylate (active anti-inflam agent produced by metabolism of sulfasalazine)
WHat is the active anti-inflam agent produced by metabolism of sulfasalazine?
5-aminosalicylate
T/F People allergic to aspirin are also allergic to NSAIDs
T
NSAIDs: should be used w/ caution in what patients?
Renal failure and CHF
_____ from the adeno-hypophysis stimulates synthesis of glucocorticoids from the adrenal cortex
ACTH
Broadly, how do steroids work?
They inhibit early and later phenomena associated with inflammation. They inhibit formation and action of NF&kappa;B.
Two main short-acting (8-12 hours )corticosteroids
hydrocortisone (cortisol) and cortisone
3 main intermediate-acting (12 - 36 hours) corticosteroids
prednisone

prednisolone

triamcinolone
2 main long-acting (36 - 72 hours) corticosteroids
Betamethasone

Dexamethasone
What are the two main categories of steroid poisoning?
Those due to use of steroids; Those which occur when steroids are terminated or reduced.
Acute adrenal insufficiency: how does it relate to steroids?
Too rapid steroid withdrawal after prolonged therapy.
fever, myalgia, arthralgia, malaise, weight loss.

Protect from stress until endogenous synthesis returns to normal.
Prolonged steroid therapy: effects
1) pituitary-adrenal suppression
2) hypokalemic alkalosis and edema
3) Glucosuria -diabetes
4) Increased susceptibility to infection
5) peptic ulceration
6) myopathy - proximal muscle weakness
7) behavioral disturbances
8) osteoporosis
9) growth inhibition and/or arrest
10) cataracts
11) hypertension
12) increased capillary fragility and severity of bruising
13) thinning of skin
Alternate day therapy of steroids
to minimize metabolic effects and keep anti-inflammatory effects and to simulate normal cyclical steroid levels.