์์๋จธ
์์๋จธ(DMSA)๋ ์๋๋ฌผ ๋ฐ ์กฐ๋ฅ์ **๋ฉ ์ค๋ ** ์น๋ฃ์ ์ฃผ๋ก ์ฌ์ฉ๋๋ ๊ฒฝ๊ตฌ์ฉ ์ค๊ธ์ ํฌ๋ ์ดํธ์ ์ ๋๋ค. ๋๋จธ์บ ํ๋กค(BAL)์ ์์ฉ์ฑ ์ ์ฌ์ฒด์ด์ง๋ง, ๊ฒฝ๊ตฌ ํฌ์ฌ๊ฐ ๊ฐ๋ฅํ๊ณ ์น๋ฃ ์ง์๊ฐ ํจ์ฌ ๋๋ค๋ ๋๋ ทํ ์ฅ์ ์ด ์์ต๋๋ค. * **๋์ ๋ ์:** ๋ฉ(Pb)์ ๋งค์ฐ ํจ๊ณผ์ ์ด๋ฉฐ, ๋น์(As) ๋ฐ ์์(Hg) ์ค๋ ์๋ ์ ์ฌ์ ์ธ ํจ๊ณผ๊ฐ ์์ต๋๋ค. * **์์ ์ฑ:** ์ผ๋ฐ์ ์ผ๋ก ์์ ํ๊ณ ํจ๊ณผ์ ์ ๋๋ค. ์์ฐ, ๊ตฌ๋ฆฌ, ์ฒ ๊ณผ ๊ฐ์ ๋๋ถ๋ถ์ ํ์ ๋ฏธ๋ ์์๋ฅผ ๊ณผ๋ํ๊ฒ ํฌ๋ ์ดํธํ์ง ์์ผ๋ฉฐ ์์ฅ๊ด์์ ๋ฉ ํก์๋ฅผ ์ฆ๊ฐ์ํค์ง ์์ต๋๋ค. > **์์ ์์ :** ์๋๋ฌผ์ ๋ฉ ์ค๋ ์น๋ฃ ์, ์์๋จธ๋ ๊ฐ์ ์์ ๊ฒฝ๊ตฌ ํฌ์ฌ๊ฐ ๊ฐ๋ฅํ๊ณ ์ ๋ ์ฑ์ด ์ ์ผ๋ฉฐ ํ์ ๋ฏธ๋ค๋์ ๊ธ๊ฒฉํ ๊ณ ๊ฐ์ํค์ง ์๊ธฐ ๋๋ฌธ์ CaEDTA๋ณด๋ค ์ ํธ๋๋ ๊ฒฝ์ฐ๊ฐ ๋ง์ต๋๋ค.
์์ฉ ๊ธฐ์ : Succimer acts as a heavy metal chelator through its **sulfhydryl (-SH) groups**. * **Binding:** The sulfhydryl groups physically bind (chelate) heavy metal ions (such as **lead, mercury, and arsenic**) in the bloodstream and tissues. * **Complex Formation:** Heavy metal + Succimer โ **Water-soluble chelate complex**. * **Excretion:** These stable, water-soluble complexes are subsequently filtered by the kidneys and excreted safely in the urine, thereby reducing the heavy metal burden in the body.
๋๋ฌผ ์ข ๋ณ ์ฉ๋
- Lead poisoning ยท 10 mg/kg PO three times daily for 5 days, followed by 10 mg/kg PO twice daily for 2 weeks ยท PO ยท TID then BID ยท 19 days
- Lead poisoning ยท 10 mg/kg PO q8h ยท PO ยท q8h ยท 10 days ยท Blood lead levels should be rechecked a few days following the last dose; a second round may be necessary.
- Lead poisoning ยท 15-35 mg/kg PO twice daily ยท PO ยท BID ยท 5 days
- Lead poisoning ยท 30 mg/kg PO twice daily ยท PO ยท BID ยท minimum of 7 days ยท If severe neurologic signs, may supplement with one dose of CaEDTA (<50 mg/kg IM).
- Lead poisoning ยท 10 mg/kg PO q8h ยท PO ยท q8h ยท 10 days ยท Blood lead levels should be rechecked a few days following the last dose; a second round may be necessary.
- Lead poisoning ยท 10 mg/kg PO three times daily for 5 days, followed by 10 mg/kg PO twice daily for 2 weeks ยท PO ยท TID then BID ยท 19 days
์ฉ๋์ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์ฐธ๊ณ ์๋ฃ์ ๋๋ค. ํญ์ ์ต์ ๋ผ๋ฒจ๊ณผ ๊ฐ๋ณ ํ์์ ๋ํด ํ์ธํ์ญ์์ค.
ํฌ์ฌ ๊ฒฝ๋ก
๊ธ๊ธฐ
- Hypersensitivity to succimer
- Continued exposure to the lead source (source must be removed prior to or concurrently with therapy)
์ด์๋ฐ์
- Gastrointestinal upset (vomiting, diarrhea)
- Flu-like symptoms (fatigue, body aches)
- Increased liver enzymes (AST, ALT)
- Rash
- Unpleasant sulfurous odor imparted to breath, saliva, urine, and feces
์ฝ๋ฌผ ์ํธ์์ฉ
- Other chelating agents (CaEDTA, dimercaprol, trientine, penicillamine) ยท Concomitant use is not recommended in humans due to potential for increased toxicity or altered efficacy.
๋ชจ๋ํฐ๋ง
- Blood lead levels (recheck a few days after completing therapy)
- Gastrointestinal adverse effects
- Liver enzymes (AST, ALT)
- Hydration status
๊ณผ์ฉ๋
### Overdose & Toxicity * **Dogs:** Succimer has a relatively wide margin of safety. Doses up to 200 mg/kg/day did not cause overt toxicity. However, massive doses (300 mg/day) caused fatalities, primarily presenting with **kidney and GI tract lesions**. * **Birds:** Cockatiels are particularly sensitive to high doses. Doses of 80 mg/kg PO q12h caused a significant number of fatalities, whereas 40 mg/kg q12h did not. * **Treatment:** If an acute overdose occurs, standardized gut evacuation (emesis/lavage) followed by activated charcoal protocols are recommended.
VetSheet ์ฝ๋ฌผ ๋ ํผ๋ฐ์ค๋ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์์ฌ๊ฒฐ์ ๋ณด์กฐ ๋๊ตฌ์ด๋ฉฐ, ์ ๋ฌธ์ ํ๋จ์ด๋ ์ ์กฐ์ฌ์ ์ต์ ๋ผ๋ฒจ์ ๋์ ํ์ง ์์ต๋๋ค.