Glinka A V, Kleiman A M, Wyatt G R
A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow.
Biochem Mol Biol Int. 1995 Feb;35(2):323-8.
In maturing adult female migratory locusts, the rises in JH and Vg in the hemolymph are greatly accelerated by enriched feeding; hereafter the JH titer fluctuates with vitellogenic cycles, falling to a low level at the oviposition stage. In fat bodies incubated in vitro, the JH analog, methoprene, and brain extract from well-fed locusts (but not starved locusts) stimulated Vg synthesis synergistically. Repeated washing of fat bodies from oviposition stage locusts led to a rise in Vg synthesis after 4 h, which was prevented by addition of locust adipokinetic hormone (AKH). We conclude that at least three hormonal factors interact in the control of Vg synthesis in locus fat body: JH and a brain factor stimulate, reflecting development and nutrition, while AKH inhibits at the oviposition stage.
在成熟的成年雌性飞蝗中，丰富的食物会极大地加速血淋巴中保幼激素（JH）和卵黄原蛋白（Vg）含量的上升；此后，JH滴度会随着卵黄生成周期而波动，在产卵阶段降至低水平。在体外培养的脂肪体中，JH类似物烯虫酯和来自饱食蝗虫（而非饥饿蝗虫）的脑提取物可协同刺激Vg合成。对产卵期蝗虫的脂肪体进行反复冲洗，4小时后Vg合成增加，而添加蝗虫脂肪动激素（AKH）可阻止这种增加。我们得出结论，在飞蝗脂肪体中，至少有三种激素因子相互作用来控制Vg合成：JH和一种脑因子起刺激作用，反映发育和营养状况，而AKH在产卵阶段起抑制作用。
