Evolution of photosensory pineal organs in new light: the fate of neuroendocrine photoreceptors.

Evolution of photosensory pineal organs in new light: the fate of neuroendocrine photoreceptors.
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新视角下光感觉松果体器官的进化:神经内分泌光感受器的命运。

DOI:
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发表时间:
2003
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
通讯作者:
H. Meissl
H. Meissl
中科院分区:
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文献类型:
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作者:
P. Ekström;H. Meissl

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松果体的进化被设想为松果体细胞的逐渐转化(在特定细胞系中松果体细胞感觉能力的逐渐退化),即松果体器官的所谓感觉细胞系。在大多数非哺乳动物中,松果体器官是一个直接的光感觉器官,而哺乳动物的松果体器官(脑膜)是一个受光周期控制的非感觉神经内分泌器官。松果体器官的系统发育转化反映在主要实质细胞类型松果体细胞的形态和生理上。在羊膜动物中,具有视网膜锥状光感受器样特征的松果体细胞占主导地位,而在蜥脚类动物中,所谓的初级光感受器占主导地位。它们具有发达的分泌特性,被解释为羊膜动物松果体光感受器和哺乳动物非感觉松果体细胞之间的中介。我们重新审视了松果体进化的渐进转化假说所依据的原始研究,发现这种松果体进化模型的证据是模糊的。鉴于神经发育机制的最新进展,我们提出了一种新的松果体进化假设,其中“感觉细胞系内的逐渐退化”的旧概念应该被“松果体场神经谱系内命运限制的变化”取代。
Pineal evolution is envisaged as a gradual transformation of pinealocytes (a gradual regression of pinealocyte sensory capacity within a particular cell line), the so-called sensory cell line of the pineal organ. In most non-mammals the pineal organ is a directly photosensory organ, while the pineal organ of mammals (epiphysis cerebri) is a non-sensory neuroendocrine organ under photoperiod control. The phylogenetic transformation of the pineal organ is reflected in the morphology and physiology of the main parenchymal cell type, the pinealocyte. In anamniotes, pinealocytes with retinal cone photoreceptor-like characteristics predominate, whereas in sauropsids so-called rudimentary photoreceptors predominate. These have well-developed secretory characteristics, and have been interpreted as intermediaries between the anamniote pineal photoreceptors and the mammalian non-sensory pinealocytes. We have re-examined the original studies on which the gradual transformation hypothesis of pineal evolution is based, and found that the evidence for this model of pineal evolution is ambiguous. In the light of recent advances in the understanding of neural development mechanisms, we propose a new hypothesis of pineal evolution, in which the old notion 'gradual regression within the sensory cell line' should be replaced with 'changes in fate restriction within the neural lineage of the pineal field'.
锥杆同源盒基因斑马鱼同源物的分离和表征。
DOI: --
发表时间: 2001
期刊: Investigative ophthalmology & visual science.
影响因子: --
作者:
Liu,Y;Shen,Y;Rest,JS;Raymond,PA;Zack,DJ
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新生大鼠松果体光敏性的诱导。
DOI: 10.1073/pnas.210248297
发表时间: 2000
影响因子: 11.1
作者:
Tosini,G;Doyle,S;Geusz,M;Menaker,M
通讯作者: Menaker,M
DOI: 10.1006/dbio.2000.0125
发表时间: 2001-03-01
影响因子: 2.7
作者:
Chuang, JC;Raymond, PA
通讯作者: Raymond, PA
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发表时间: 1999-06-01
影响因子: 2.6
作者:
Chuang, JC;Mathers, PH;Raymond, PA
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