三甲基氯化锡引发低血钾症动物模型的研究  

Establishment of hypokalemia animal mode1 by trimethyltin chloride

作　　者：唐小江[1] 黄建勋[2] 李来玉[2] 赖关朝[2] 邓莹玉[2] 越飞[2] 刘师琪[2] 

机构地区：[1]中山大学生命科学学院 [2]广东省职业病防治院,广东广州510300

出　　处：《中国职业医学》2001年第1期6-8,共3页China Occupational Medicine

基　　金：广东省医学科学技术研究基金项目!(编号:B1999010)

摘　　要：目的研究用三甲基氯化锡（ＴＭＴ－Ｃｌ）引发低血钾症动物模型的方法。方法给ＳＤ大鼠腹腔注射ＴＭＴ－ＣＩ，观察其半数致死剂量（ＬＤ５０）以及血钾、血钠、血氯水平与ＴＭＴ－ＣＩ的剂量和染毒时间的关系。结果ＴＭＴ－ＣＩ的ＬＤ５０为１４．７ ｍｇ／ｋｇ。随着剂量的增加，血钾水平显著下降，死亡明显加快；１０ ｍｇ／ｋｇ组血钾随着染毒时间增加而不断下降，至第６ｄ达到最低为 ４．８５ｍｍｏｌ／Ｌ，第 １１ｄ开始回升，但需到 ２８ ｄ后才恢复至正常水平。血钾下降的速度及程度与中毒表现有关。染毒后０．５ｈ动物血钠水平也明显下降，但２４ｈ后均恢复正常。结论采用ＴＭＴ－ＣＩ可以制作大鼠低血钾症动物模型。Objective To study the methods in establishing hypokalemia animal model by trimethyltin chloride (TMT-CI). Methods SD rats were treated with TMT-CI (ip). The main measurements include the LD50, plasma K+, Na+, CI- levels, the dose effect and trime effect of TMT-CI. Results The LD50 of TMT-CI (ip ) was 14 .7 mg/kg. With the increasing of the dosage, the plasma K+ level dropped rapidly and then, the death outcome was caused by quickly. In the low dosage group (10 mg/kg), the plasma K+ level dropped slowly. The lowest plasma K+ level (4. 85 mmol/L) was detected in day 6. The plasma K+ level raised again in day 11, and restored in day 28. It was obvious that poison symptoms were corresponded with the speed and the span of K+ level decline. The plasma Na+ level also dropped at 0 .5 h after TMT-CI treatment, but it recovered 24 h later. Conclusion Trimethyltin chloride could establish hypokalemia model in SD rats.

关 键 词：三甲基氯化锡 低血钾症 动物模型 职业危害 

分 类 号：R135.1[医药卫生—劳动卫生] R996[医药卫生—公共卫生与预防医学]