Effect of Organophosphorus Insecticides on the Inhibition of the Acetylcholinesterase Activities

유기인계(有機燐系) 살충제(殺?劑)가 Acetylcholinesterabe 활성저해(活性沮害)에 미치는 영향(影響)

  • Kim, Jung-Ho (Department of Environment Health, Taegu Oriental Medical University)
  • 김정호 (대구한의과대학 환경보건학과)
  • Published : 1988.03.30

Abstract

The responses of brain acetylcholinesterase and plasma cholinesterase activities were examined in chicken given oral doses of an organophosphorus insecticides. Acute oral $LD_{50}$ of terbufos was 1.82mg/kg, and terbufos sulfone was 2.85mg/kg, terbufos sulfoxide, terbufoso xon, terbufosoxon sulfone and terbufosoxon sulfoxide were about $0.30{\sim}0.79mg/kg$, respectively. Acute oral $LD_{50}$ of phorate was 1.02mg/kg, and phorate sulfone was 1.73mg/kg, phorate sulfoxide, phoratoxon, phoratoxon sulfoxide and phoratoxon sulfone were about $0.36{\sim}0.63mg/kg$, respectively. Dosages of 50% inhibition for brain AChE and plasma ChE activities in chicken at 60 mins after oral administration of organop hosphorus insecticides were $35.3{\pm}6.8%\;and\;17.4{\pm}3.6%$ of acute oral $LD_{50}$, respectively. Activities of brain AChE and plasma ChE in chicken at 60 mins after oral administratration of acute oral $LD_{50}$ of organophosphorus insecticides were inhibited by $83.7{\pm}3.9%\;and\;93.3{\pm}2.2%$, respectively.

Terbufos 및 phorate와 그 대사물(代謝物)에 대(對)한 각각(各各)의 급성경구독성(急性經口毒性) $LD_{50}$값 및 효소활성저해율(酵素活性沮害率)과 투여량반응(投與量反應)과의 관계(關係)를 규명(糾明)한 결과(結果)는 다음과 같았다. 병아리에 대(對)한 terbufos의 급성경구독성(急性經口毒性) $LD_{50}$은 1.82mg/kg이었으며, $P=S,SO_2$는 2.85mg/kg, P=S,SO, P=O,S, P=O,SO, 및 $P=O,SO_2$$0.30{\sim}0.79mg/kg$ 범위(範圍)이었다. 또한 phorate는 1.02mg/kg 이었으며, $P=S,SO_2$는 1.73mg/kg, P=S,SO, P=O,S, P=O,SO 및 $P=O,SO_2$$0.36{\sim}0.63mg/kg$범위(範圍)이었다. 약제(藥劑)를 경구투여(經口投與)하고 60분(分) 후(後)에 측정(測定)한 뇌(腦) AChE 및 혈장(血漿) ChE 활성(活性) 저해(沮害) 해율(害率)과 투여용량(投輿用量)과는 Y=a+b(-log X)[Y=효소활성(酵素活性)(%), X=투여량(投與量)]식(式)에 잘 적용(適用)되었다. Terbufos 및 phorate와 그 대사물(代謝物)에 대(對)한 각각(各各)의 투여반응곡선(投與反應曲線)에서, 뇌(腦) AChE 활성(活性) 및 혈장(血漿) ChE 활성(活性)의 50%를 저해(沮害)시킬 수 있는 투여량(投與量)은 각각(各各) 급성경구독성(急性經口毒性) $LD_{50}$$35.3{\pm}6.8%$$17.4{\pm}3.6%$이었다. 또한 각각(各各)의 화합물(化合物)에 대(對)한 급성경구독성(急性經口毒性) $LD_{50}$ 투여량(投與量)에서는 뇌(腦) AChE 및 혈장(血漿) ChE 활성저해(活性沮害)가 각각(各各) $83.7{\pm}3.9%$$93.3{\pm}2.2%$이었다.

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