Circadian Firing Activities of Neurosecretory Cells Releasing Pheromonotropic Neuropeptides in the Silkmoth, Bombyx mori
Circadian Firing Activities of Neurosecretory Cells Releasing Pheromonotropic Neuropeptides in the Silkmoth, Bombyx mori
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家蚕释放信息素神经肽的神经分泌细胞的昼夜放电活动
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. Ichikawa
中科院分区：
文献类型：
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作者：
M. Tawata;T. Ichikawa
摘要家蚕释放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活动。PBAN产生细胞放电活动的昼夜变化在恒暗和恒暗(0.1lx)条件下持续，平均周期分别为23.0±1.6小时和22.6±0.8小时，表明神经分泌细胞系统受昼夜节律的控制。背景光显著改变了细胞的昼夜节律：(1)在中等强度(100lx)的连续光照下，自由奔跑活动节律的周期显著缩短(18.5±1.6小时)；(2)当光照强度降低到0.01lx时，细胞的放电期延长了2.1±0.7小时。光对放电活动的抑制作用可能通过在光照终止后将PBAN细胞从抑制中释放出来，从而诱导日常活动模式中的夜间成分。
Abstract 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.
羽化激素在控制蜕皮行为的神经内分泌级联中提供了蜕皮触发激素和甲壳动物心脏活性肽之间的联系。
DOI：
10.1242/jeb.202.4.343
发表时间：
1999
期刊：
The Journal of experimental biology
影响因子：
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作者：
Gammie,SC;Truman,JW
通讯作者：
Truman,JW