昆虫抗冻蛋白的研究进展

热滞效应(Tberm Hysteresis Action)最早在昆虫研究中发现，后来研究表明，它是抗冻蛋白(Antifreeze Proteins，AFPs)的一种基本性质。和鱼类，植物AFPs相比，昆虫AFPs具有更高 的热滞活性和独特的化学结构特征。昆虫AFPs在昆虫抗冻生理过程中起着相当重要的作用，表现在以下三个方面：①抑制一些冰晶形成；②提高冰冻耐受性；③可能参与水分平衡过程。光周期，气温和湿度是调控AFPs生物合成与降解的三种外部因子，而体内激素的变化可能是直接调节脂肪体合成AFPs的内部因子。

Advances in insect antifreeze protein research

Therm hysteresis found at first in insects,is one of the basic characteristics of antifreeze proteins(AFPs).Comparing with fish and plant AFPs,the insect AFPs has higher therm hysteresis activity and unique chemical structure features.It plays an important role in the physiological antifreeze course of insects,as follows:1)inhibiting the growth of ice crystals;2)increasing freeze tolerance;3)possibly contributing to water balance of insects.Photoperiod,temperature and humidity are the external factors that regulate the metabolism of AFPs;and the changes of hormone in the body may be the direct internal causes that control the AFPs'synthesis in the fat body.