대장균 내독소에 의한 토끼 혈중 전해질 농도의 변화

Alterations in Blood Electrolyte of Rabbits with Experimental Injection of Escherichia coli Endotoxin

  • Seok-Cheol Choi (Department of Clinical Laboratory Science, Pusan Catholic University) ;
  • Jai-Young Kim (Department of Clinical Laboratory Science, Pusan Catholic University) ;
  • Heun-Young Kwon (Department of Clinical Laboratory Science, Pusan Catholic University) ;
  • Tae-Un Kim (Department of Clinical Laboratory Science, Pusan Catholic University) ;
  • Soo-Myung Hwang (Department of Clinical Laboratory Science, Pusan Catholic University) ;
  • Won-Jae Lee (Department of Microbiology, Pukyong National University)
  • 발행 : 2000.06.01

초록

혈액 전해질 성분들에 대한 대장균 내독소의 영향을 조사하기 위해 토끼를 대상으로 한 동물실험을 실시하였다. 대장균 내독소 (혈청형 O55 : B5)를 토끼의 귀정맥을 통해 0.10 mg/kg 혹은 0.50 mg/kg 농도로 주입한 후 3, 6, 12, 24시간대에 채혈하여서 $Ca^{++}$, $Mg^{++}$, $Na^{+}$, $K^{+}$, Cl$^{-}$ 농도를 측정하였다. 대조군에 비해, 내독소투여 토끼의 $Ca^{++}$ 농도는 6시간대에 증가하였고, $Mg^{++}$ 농도는 3, 6, 12시간대에, $Na^{+}$$K^{+}$는 모든 채혈시간대에, 그리고 Cl$^{-}$ 농도는 3, 12, 24시간대에 각각 유의하게 높았다 (p<0.05). 흥미롭게도, 고 $Mg^{+}$ 혈증 (약 4.0 mg/dL)을 보인 내독소투여 토끼들은 심각한 임상징후들로 인식되는 분비물의 증가, 쇼크, 빈호흡, 경련, 혹은 설사와 같은 증세를 보였다. 본 연구의 결과들은 대장균 내독소가 혈액 전해질 농도의 항상성 혼란을 유도하며 이러한 생리적 불균형은 치명적 상황과 그로 인한 죽음을 야기할 수도 있음을 시사하고 있다.

We studied the effects of Escherichia coli (E. coli) endotoxin on blood electrolytes levels in rabbits. Endotoxin (5. coli serotype O55 : B5) was injected via rabbits' ear vein : 0.10 mg/kg (Group A) or 0.50 mg/kg (Group B). Blood samples were taken at postendotoxemic 3, 6, 12 and 24 hrs and were analyzed for detections of the levels of blood electrolytes such as $Ca^{++}$, $Mg^{++}$, Na$^{+}$, $K^{+}$ and Cl$^{-}$. As compared to control group, in endotoxin-treated rabbits $Ca^{++}$ levels elevated at 6 hrs but decreased at 24 hrs, $Mg^{++}$ levels were high at 3, 6 and 12 hrs, Na$^{+}$ and $K^{+}$ levels increased at all sampling times and Cl$^{-}$ levels rose at 3, 12 and 24 hrs (p<0.05). Interestingly, endotoxic rabbits having hypermagnesemia (about 4.0 mg/dL) showed severe syndromes such as increased secretion, shock, tachypnea, seizure and/or diarrhea, suggesting that these may be clinical signs of imminent death in rabbits. These observations testify that bacterial endotoxin leads to dyshomeostasis of blood electrolytes and the physiological imbalances may cause fatal disorders and subsequent death.

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