Hypersensitivities 3&4

Question 1

Are there any hypoallergenic dogs

Answer 1

No

Question 2

Pet allergies activated by hair on pet?

Answer 2

No

Question 3

Hay fever and pet allergy symptoms similar?

Answer 3

Yes

Question 4

Reptiles common pet allergy cause?

Answer 4

No

Question 5

Can you have allergy symptoms even if pet isnt in room?

Answer 5

Yes

Question 6

Pet allergy is a form of allergic rhinitis

Answer 6

Yes

Question 7

3 steps of delayed hypersensitivity rxn

Answer 7

• sensitization
• repeat exposure
• immune (hypersensitivity)

Question 8

Four sensitivity types

Answer 8

• 1: anaphylactic

-2: cytotoxic

-3: immune complex

-4: delayed

Question 9

How do mast cells degranulate? List their 2 impacts

Answer 9

• antigen binds to IgE receptors on mast cell, causes release of mediators
• affects: acute inflammation and systemic effects

Question 10

Skin contact w/ allergen is not a common cause of urticaria

Answer 10

True

Question 11

Flea allergy dermatitis causative allergen and hypersensitivity type

Answer 11

• Ctenocephalides felis
• type 2

Question 12

Canine AD caused by

Answer 12

Dermatophagoides pteronyssinus and D. Farinae (Der f15)

Question 13

Classical type i hypersensitivity rn

Answer 13

• Fc epsilon RI= hi affinity receptor for Fc region of IgE

Question 14

Poststreptococcal glomerulonephritis

Answer 14

• rapid decrease in kidney function after strep infection
• type 3

Question 15

Immune complex mediated hypersensitvity rxn steps (type 3)

Answer 15

• immune complexes deposited in organs
• complement activated
• neutrophils degranulated
• enzymes released and damage cells

Question 16

Inflammatory polyarthritis (type 3)

Answer 16

• can be erosive or non erosive
• examples: rheumatoid arthritis and greyhound/feline progrssive polyarthritis
• clinical signs: lameness, multiple jt pain, jt swelling, fever, malaise, anorexia

Question 17

Diagnosis and treatment of polyarthritis

Answer 17

• diagnosis: x-rays, biopsy, arthrocentesis, serologic testing
• treat: anti-inflammatories, chemotherapy agents

Question 18

Systemic lupus erythematosus

Answer 18

• animals immune system attacks own tissue

Type 3

Question 19

Tests for type 4 hypersens.

Answer 19

• tb skin test
• palpebral test
• caudal fold test
• comparative cervical test: avian/bovine