์คํผ๋ ธ์ฌ๋
์คํผ๋ ธ์ฌ๋๋ ์ฒ์ฐ ํ ์ ๋ฐํ ๋ฆฌ์์ธ *Saccharopolyspora spinosa*์์ ์ ๋ํ ์ ์ ์ฑ ๊ฒฝ๊ตฌ์ฉ ๋งํฌ๋ก๋ผ์ด๋๊ณ ์ด์ถฉ์ ์ ๋๋ค. ์ฃผ๋ก ๋ฐ๋ ค๊ฒฌ์ ๋ฒผ๋ฃฉ(*Ctenocephalides felis*) ๊ฐ์ผ ์๋ฐฉ ๋ฐ ์น๋ฃ์ ์ฌ์ฉ๋ฉ๋๋ค. **์ฃผ์ ์์์ ์ฅ์ :** * **๋น ๋ฅธ ํจ๊ณผ:** ํฌ์ฌ ํ 30๋ถ ์ด๋ด์ ๋ฒผ๋ฃฉ์ ์ฃฝ์ด๊ธฐ ์์ํ์ฌ 4์๊ฐ ์ด๋ด์ ์์ ํ ์ฌ๋ฉธ์ํต๋๋ค. ์ฑ์ถฉ์ด ์์ ๋ณ๊ธฐ ์ ์ ์ฃฝ์์ผ๋ก์จ ๋ฒผ๋ฃฉ์ ์ํ์ฌ๋ฅผ ํจ๊ณผ์ ์ผ๋ก ์ฐจ๋จํฉ๋๋ค. * **๋ฐฉ์ ํจ๊ณผ:** ์ ์ (๊ฒฝ๊ตฌ)์ผ๋ก ํฌ์ฌ๋๋ฏ๋ก ์์, ๋ชฉ์ ๋๋ ํผ๋ถ๊ณผ์ฉ ์ดํธ์ ์ํฅ์ ์ ํ ๋ฐ์ง ์์ต๋๋ค. **์์ ํ:** * ์ฃผ๋ก ๋ฒผ๋ฃฉ ์ฑ์ถฉ ๊ตฌ์ ์ ๋ก ์ฌ์ฉ๋์ง๋ง, ์๋น ์ฐ๊ตฌ์ ๋ฐ๋ฅด๋ฉด ํ๊ฐ ์ธ ๊ณ ์ฉ๋ ํฌ์ฌ ์ 24์๊ฐ ์ด๋ด์ ๊ฐ์๊ฐ์ฐธ์ง๋๊ธฐ(*R. sanguineus*)๋ฅผ ์ฃฝ์ด๋ ๋ฐ ๋์ ํจ๋ฅ์ ๋ณด์์ต๋๋ค(์ง๋๊ธฐ ๊ตฌ์ ์ฉ์ผ๋ก ๊ณต์ ์น์ธ๋์ง๋ ์์). * *๊ณ ์์ด ์ฌ์ฉ ์ฐธ๊ณ :* ์ด ๋ชจ๋ ธ๊ทธ๋ํ์์๋ ๊ณ ์์ด์ฉ์ผ๋ก ์น์ธ๋์ง ์์๋ค๊ณ ๋ช ์๋์ด ์์ผ๋, ์ดํ FDA์์ ๊ณ ์์ด ์ ์ฉ Comfortis ์ ํ์ ์น์ธํ์ต๋๋ค. ๊ณ ์์ด ํฌ์ฌ ์ ํญ์ ์ต์ ์ ํ ๋ผ๋ฒจ์ ์ฐธ์กฐํ์ญ์์ค.
์์ฉ ๊ธฐ์ : Spinosad targets the insect nervous system through a unique mechanism distinct from other parasiticides: * **Primary Pathway:** Acts as an agonist at the **nicotinic acetylcholine D-alpha receptors** โ causes motor neuron activation โ leads to involuntary muscle contractions and tremors โ prolonged exposure results in paralysis and rapid flea death. * **Secondary Pathway:** Opens **GABA-gated chloride channels** in insects, similar to the mechanism of other macrocyclic lactones, further contributing to neuromuscular paralysis. Because mammalian nicotinic receptors are structurally different from insect receptors, spinosad exhibits a high margin of safety in dogs.
๋๋ฌผ ์ข ๋ณ ์ฉ๋
- Flea infestation ยท 50-75 mg/kg ยท PO ยท q28d ยท Give with or immediately after food.
- Prevention or treatment of fleas infestations ยท 30-60 mg/kg (minimum dosage of 30 mg/kg) PO once monthly with food. ยท PO ยท q30d ยท 1 month ยท Must be given with food for optimal absorption.
- Flea infestation ยท 45-70 mg/kg ยท PO ยท q28d ยท Give with or immediately after food.
์ฉ๋์ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์ฐธ๊ณ ์๋ฃ์ ๋๋ค. ํญ์ ์ต์ ๋ผ๋ฒจ๊ณผ ๊ฐ๋ณ ํ์์ ๋ํด ํ์ธํ์ญ์์ค.
ํฌ์ฌ ๊ฒฝ๋ก
๊ธ๊ธฐ
- Cats (per this specific monograph's label status)
- Dogs with known pork or soy allergies (chewable tablets contain pork proteins and hydrolyzed soy)
- Dogs and cats weighing < 1.2 kg
- Dogs and cats < 14 weeks of age
- Dogs with MDR1 mutation (relative contraindication due to increased risk of adverse effects)
์ด์๋ฐ์
- Vomiting (most common)
- Depression/lethargy
- Anorexia
- Ataxia
- Diarrhea
- Pruritus
- Trembling
- Hypersalivation
- Seizures (rare)
- Vomiting (occasional)
- Lethargy (rare)
- Diarrhoea (rare)
- Anorexia (rare)
- Ataxia (rare)
์ฝ๋ฌผ ์ํธ์์ฉ
- Ivermectin ยท Concurrent use with high extra-label doses of ivermectin (e.g., for demodicosis) increases the risk of neurotoxicity. However, spinosad is safe to use with standard low-dose heartworm preventatives.
- Macrocyclic lactones (e.g., avermectins, ivermectin) ยท Increased risk of severe neurological toxicity. Do not use in combination. ยท major
- Digoxin ยท Competition for P-glycoprotein efflux pump, potentially increasing digoxin levels. ยท moderate
- Doxorubicin ยท Competition for P-glycoprotein efflux pump, potentially increasing doxorubicin toxicity. ยท moderate
๋ชจ๋ํฐ๋ง
- Flea control efficacy
- Adverse gastrointestinal or neurologic effects
- Efficacy of flea control
- Gastrointestinal tolerance (vomiting)
- Adverse neurological signs
๊ณผ์ฉ๋
Spinosad has a wide margin of safety. The oral LD50 in mice is >5000 mg/kg. In canine dose tolerance studies (up to 16.7X the normal dose for 10 days), the primary sign was **routine vomiting**. No significant changes in hematology or coagulation were noted, though mild elevations in ALT and phospholipidosis (vacuolation) of lymphoid tissue occurred.
VetSheet ์ฝ๋ฌผ ๋ ํผ๋ฐ์ค๋ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์์ฌ๊ฒฐ์ ๋ณด์กฐ ๋๊ตฌ์ด๋ฉฐ, ์ ๋ฌธ์ ํ๋จ์ด๋ ์ ์กฐ์ฌ์ ์ต์ ๋ผ๋ฒจ์ ๋์ ํ์ง ์์ต๋๋ค.