Unit 1: Immunosuppressive Agents Flashcards

1
Q

What is the physiological dose of glucocorticoids for dogs and cats?

A

0.25 mg/kg/day

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2
Q

What is the anti-inflammatory dose for glucocorticoids in dogs and cats?

A

Dogs = 0.5 - 1 mg/kg/day

Cats = 1-2 mg/kg/day

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3
Q

What is the immunosuppressive dose for glucocorticoids in dogs and cats?

A

Dogs = 2-4 mg/kg/day

Cats = 4-8 mg/kg/day

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4
Q

What are the 6 side effects of glucocorticoids?

A

Thin skin, calcinosis cutis, comedones, bilateral symmetric alopecia, poor wound healing, demodicosis

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5
Q

Cyclosporine is a _____ _____ (MOA).

A

calcineurin inhibitor

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6
Q

What does calcineurin inhibition lead to?

A

Inhibition of IL-2 production and activation of T cells

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7
Q

What does cyclosporine do to T cells?

A

Suppresses T cell and CK production

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8
Q

What does cyclosporine do to B cells?

A

Inhibits their growth and activation

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9
Q

What does cyclosporine do to APCs?

A

Reduces # and activity of APCs

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10
Q

What does cyclosporine do to endothelial cells?

A

reduces adhesion molecule expression

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11
Q

What does cyclosporine do to keratinocytes?

A

Anti-proliferative effect and reduced Ck production

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12
Q

Which drugs are CsA stimulators?

A

Dexamethasone, Phenobarbital, Rifampin

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13
Q

Which drugs are CsA inhibitors?

A

Ciprofloxacin, Erythromycin, Fluconazole, Itraconazole, Ketoconazole, Methylprednisolone, Prednisone

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14
Q

What drug is preferred to be given to decrease the necessary dose of cyclosporine?

A

Ketoconazole

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15
Q

What are 8 examples of when tacrolimus can be beneficial?

A

Pemphigus complex, DLE, PE, vasculitis, alopecia areata, vitiligo, periana fistulas, feline proliferating and necrotizing otitis externa

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16
Q

What enzyme is known for significant side effects with azathioprine?

A

Thiopurine S-methyltransferase (TPMT)

17
Q

What happens in animals and humans that are deficient in TPMT?

A

If they are given Azathioprine –> 6-TGN incorporation into DNA –> active toxic metabolites

18
Q

What immunosuppressive drugs have quick onset of action?

A

glucocorticoids

19
Q

What immunosuppressive drugs have slow onset of action?

A

Cyclosporine, Azathioprine, Chlormabucil, Oclacitinib