小鼠耗氧量动态变化测定装置的建立与应用

目的　建立一种能够连续测定小鼠耗氧量动态变化的简易装置和方法。方法　用广口瓶、碱式滴定管、烧杯和连接管道建立小鼠耗氧量测定装置。两组小鼠分别灌胃给予普萘洛尔 2 0mg·kg-1和生理盐水 2 0ml·kg-1,应用该装置观察两组小鼠的缺氧存活时间 ,并测定小鼠耗氧量的动态变化。结果　普萘洛尔组小鼠的缺氧存活时间延长 4 3 35 %(P <0 0 1) ,存活期内的总耗氧量降低 4 3 4 2 % (P <0 0 1) ,其中前 10min的耗氧量降低尤为明显。结论　本测定装置具有简便易行、结果准确、可连续测定小鼠耗氧量动态变化等特点 ,能同时满足观察小鼠缺氧存活时间和连续测定耗氧量动态变化的需要

Establishment and application of apparatus for the continued measurement of the oxygen consumption in mice

Aim To establish a set of apparatus and method for the continued measurement of the oxygen consumption in mice. Methods The apparatus consists of a bottle with broad-neck for mice, basic burette, beaker containing water and some tubes for connection. Twenty mice were divided randomly into two groups and administered intragestrically propranolol 20 mg·kg -1 or equal volume of normal saline, respectively. The survival time and oxygen consumption were measured in mice subjected to normobaric and hypoxia.Results The survival time was prolonged by 43.35% (P<0.01) and the total oxygen consumption for period of survival time was decreased by 43.42% (P<0.01) in mice received propranolol. Conclusions The apparatus is simple and accurate. And it is suitable for simultaneous observation of survival time and continued measurement for oxygen consumption in mice.