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首页> 外文期刊>Zoological Science >Circadian firing activities of neurosecretory cells releasingpheromonotropic neuropeptides in the silkmoth, Bombyx mori
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Circadian firing activities of neurosecretory cells releasingpheromonotropic neuropeptides in the silkmoth, Bombyx mori

机译：家蚕释放分泌单亲性神经肽的神经分泌细胞的昼夜激发活动

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摘要

Neurosecretory cells releasing the pheromone biosynthesis-activating neuropeptide (PBAN) in Bombyx mori exhibit diurnal firing activity. Diel changes in the firing activity of the PBAN producing cells persisted in both constant dark and constant dim light (0.1 lx) at mean periods of 23.0+/-1.6 hr and 22.6+/-0.8 hr, respectively, thereby suggesting that the neurosecretory cell system is under the control of a circadian pacemaker. The circadian firing rhythm was greatly modified by background illumination: (1) the period of free-running activity rhythm was significantly short (18.5+/-1.6 hr) under continuous illumination of a moderate intensity (100 lx) and (2) the duration of a firing period of cells elongated by 2.1+/-0.7 hr, when light intensity during a photophase was lowered to 0.01 lx. The suppressive effect of light on the firing activity may induce a nocturnal component of a daily activity pattern by releasing PBAN cells from suppression after termination of illumination.
机译：释放家蚕中信息素生物合成激活神经肽（PBAN）的神经分泌细胞表现出昼夜激发活性。 PBAN产生细胞的放电活性的狄尔变化分别在恒定的暗光和恒定的暗光（0.1 lx）下持续，平均时间分别为23.0 +/- 1.6小时和22.6 +/- 0.8小时，从而提示神经分泌细胞该系统由昼夜节律起搏器控制。通过背景照明极大地改变了昼夜节律：（1）在中等强度（100 lx）的连续照明下，自由运动活动节奏的周期明显较短（18.5 +/- 1.6 hr），（2）持续时间当光相期间的光强度降低到0.01 lx时，延长了2.1 +/- 0.7 hr的细胞的发射周期。光对射击活动的抑制作用可通过在照明终止后释放PBAN细胞的抑制作用来诱导日常活动模式的夜间成分。

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