Reddy K D, Chaudhuri A, Thangavelu K
Insect Physiology Laboratory, Central Tasar Research and Training Institute, Nagri, Ranchi, India.
Horm Metab Res. 1994 Dec;26(12):570-3. doi: 10.1055/s-2007-1001761.
Concentration of free amino acids (FAA) in the haemolymph plasma of male and female tasar silkworm, A. mylitta, during fifth larval instar were determined by amino acid analyzer after administration of vertebrate thyroxine (T4). Twenty FAA have been identified in haemolymph plasma in both sexes, out of which ten were found to be predominating. Treatment with anabolic doses of thyroxine (0.5 and 1.0 micrograms/g) were able to enhance the titre of all the individual FAA which has been also reflected in the total concentrations. A specific pattern of variations in plasma FAA recorded during 5th larval instar, was not altered by the administered thyroxine. Our results thus indicate that T4 has a controlling influence on the FAA profiles of silkworm as observed in other biochemical parameters of the insect.
在给雄性和雌性柞蚕（Antheraea mylitta）五龄幼虫注射脊椎动物甲状腺素（T4）后，使用氨基酸分析仪测定其血淋巴血浆中游离氨基酸（FAA）的浓度。在两性的血淋巴血浆中已鉴定出20种FAA，其中10种占主导地位。用合成代谢剂量的甲状腺素（0.5和1.0微克/克）处理能够提高所有个体FAA的滴度，这也反映在总浓度上。在五龄幼虫期记录的血浆FAA的特定变化模式，并未因注射甲状腺素而改变。因此，我们的结果表明，正如在昆虫的其他生化参数中观察到的那样，T4对家蚕的FAA谱具有控制作用。
