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Conserved gene expression patterns reveal structural homology between the mammalian and avian hippocampus
Author(s) -
Ajinkya Deogade,
Arghya Mukherjee,
Nishikant Subhedar,
Aurnab Ghose,
A. Ghose,
A. Pal,
R. Mathur
Publication year - 2012
Publication title -
international journal of developmental neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 88
eISSN - 1873-474X
pISSN - 0736-5748
DOI - 10.1016/j.ijdevneu.2012.03.230
Subject(s) - homology (biology) , biology , gene , hippocampus , genetics , gene expression , computational biology , evolutionary biology , neuroscience
Neuropeptide Y (NPY) has been implicated as a neuromodulator mediating a number of physiological functions including anxiety, processing of gustatory information and energy homeostasis. We find that a subset of olfactory sensory neurons (OSNs) in zebrafish express NPY from early development through adulthood. Co-localization studies with OSN type markers suggest that NPY is limited to ciliated OSNs. These NPY-positive OSNs terminate in discrete glomeruli in the olfactory bulb and co-localize with the synaptic vesicle protein SV2. With a view to interrogate the functional role of NPY in olfaction, we have developed an aversive olfactory assay in zebrafish larvae. Larvae treated with a small molecule NPY receptor antagonist fail to respond to aversive olfactory signals. Our data implicates for the first time and a direct function for NPY in olfaction.