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**μ€ν΄λΌμν°λ(Oclacitinib)**μ μ£Όλ‘ λ°λ €κ²¬μ μλ λ₯΄κΈ°μ± νΌλΆμΌκ³Ό κ΄λ ¨λ μμμ¦(κ°λ €μμ¦)μ κ΄λ¦¬νκ³ μν νΌμ± νΌλΆμΌμ μ‘°μ νλ λ° μ¬μ©λλ νμ λ©΄μμ‘°μ λ° νμμμ μ λλ€. > **μμ κ²½κ³ :** μ€ν΄λΌμν°λμ λ©΄μ 체κ³λ₯Ό μ‘°μ νλ―λ‘ κ°μΌ(μ: λͺ¨λμΆ©μ¦, λνΌμ¦)μ λν κ°μμ±μ λμ΄κ±°λ κΈ°μ‘΄μ μ’ μμ± μ§νμ μ νμν¬ μ μμ΅λλ€. μ¬κ°ν κ°μΌ μνμ΄ μ¦κ°νλ―λ‘ 12κ°μ λ―Έλ§μ λ°λ €κ²¬μκ²λ κΈκΈ°μ λλ€. **μμ ν:** μ€ν΄λΌμν°λμ κ°λ €μμ¦μ λΉ λ₯΄κ² μννλ©°, μ’ μ’ μ½λ₯΄ν°μ½μ€ν λ‘μ΄λμ λΉμ·ν μλ(4~24μκ° μ΄λ΄)λ‘ μμ©νμ§λ§, κΈλ£¨μ½μ½λ₯΄ν°μ½μ΄λμ κ΄λ ¨λ λ€λ¨/λ€μ λ° μ₯κΈ°μ μΈ λμ¬ λΆμμ©μ΄ μμ΅λλ€.
μμ© κΈ°μ : Oclacitinib is a targeted enzyme inhibitor that specifically **inhibits Janus-kinases (JAK)**, with a pronounced selectivity for **JAK1** and, to a lesser extent, JAK3. By blocking these enzymes, oclacitinib prevents the signal transduction of a variety of cytokines dependent on JAK1/JAK3 pathways. Most notably, it inhibits **Interleukin-31 (IL-31)**, a key pruritogenic (itch-inducing) cytokine in dogs. Pathway: Cytokine binds to receptor β **JAK1/JAK3** activation is blocked β STAT proteins are not phosphorylated β Pro-inflammatory and pruritogenic gene transcription is halted.
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- Dogs less than 12 months of age
- Dogs weighing less than 3 kg
- Dogs with severe systemic infections
- Breeding, pregnant, or lactating dogs
- Dogs with evidence of immune suppression (e.g., hyperadrenocorticism)
- Dogs with a history of progressive malignant neoplasia
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- Gastrointestinal upset (vomiting, diarrhea, anorexia)
- Lethargy
- Increased susceptibility to infections (e.g., pyoderma, otitis, demodicosis, pneumonia)
- Transient decreases in leukocytes and serum globulins
- Potential exacerbation of neoplastic conditions
- Histiocytomas or papillomas (benign skin masses)
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- Corticosteroids Β· Increased risk of immunosuppression and secondary infections. Β· major
- Cyclosporine Β· Increased risk of profound immunosuppression. Β· major
- Modified live vaccines Β· Potential for decreased vaccine efficacy or vaccine-induced illness due to immunomodulation. Β· moderate
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- Baseline CBC, serum biochemistry, and urinalysis
- Periodic bloodwork (e.g., every 6-12 months) for dogs on long-term therapy
- Monitor for new or worsening skin, ear, or systemic infections
- Monitor for the development of cutaneous or systemic neoplastic lesions
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Overdoses up to 3-5 times the therapeutic dose are generally well tolerated but may increase the frequency and severity of expected side effects, particularly **gastrointestinal distress** (vomiting, diarrhea), **lethargy**, and localized **alopecia** or skin thickening. Chronic massive overdose increases the risk of severe immunosuppression and secondary infections. Treatment is supportive and symptomatic, as there is no specific antidote.
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