3D Distribution of Tyrosine Hydroxylase, Vasopressin and Oxytocin Neurons in the Transparent Postnatal Mouse Brain

Abstract : Over the years, advances in immunohistochemistry techniques have been a critical step in detecting and mapping neuromodulatory substances in the central nervous system. The better quality and specificity of primary antibodies, new staining procedures and the spectacular development of imaging technologies have allowed such progress. Very recently, new methods permitting tissue transparency have been successfully used on brain tissues. In this work, we combined whole-mount immunostaining for tyrosine hydroxylase (TH), oxytocin (OXT) and arginine vasopressin (AVP), with iDISCO+ clearing method, light-sheet microscopy and semi automated counting of 3D-labelled neurons to obtain a 3D distribution of these neuronal populations in a 5-day postnatal (P5) mouse brain. Segmentation procedure and 3D reconstruction allowed us to map with high resolution TH staining the various catecholaminergic cell groups and their ascending and descending fiber pathways. We show that TH pathways are present in the whole P5 mouse brain, similar to what was observed in the adult rat brain.
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Journal of Neuroendocrinology, Wiley, 2017, 〈10.1111/jne.12551〉
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D. Godefroy, C. Dominici, H. Hardin-Pouzet, Y. Anouar, S. Melik-Parsadaniantz, et al.. 3D Distribution of Tyrosine Hydroxylase, Vasopressin and Oxytocin Neurons in the Transparent Postnatal Mouse Brain. Journal of Neuroendocrinology, Wiley, 2017, 〈10.1111/jne.12551〉. 〈hal-01628379〉

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