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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Developmental changes in PSD-95 and Narp mRNAs in the rat olfactory bulb.

Glutamate is the main neurotransmitter in the olfactory bulb. Recently, postsynaptic-density 95 (PSD-95) and neuronal activity-regulated pentraxin (Narp) have been reported to be pivotal for targeting and clustering of NMDA receptors and AMPA receptors, respectively. We thus investigated the expressions of PSD-95 and Narp mRNAs in the rat developing olfactory bulb. PSD-95 mRNA was already expressed in most neurons on the first postnatal day (P1). On the other hand, Narp mRNA expression was weakly seen only in mitral cells on P1. Thereafter, we found initial expression of Narp mRNA on P7 in periglomerular cells, and on P14 in granular cells, indicating that in the developing olfactory bulb PSD-95 mRNA expression precedes Narp mRNA expression, and that the expression pattern of Narp mRNA seems to be well correlated with the maturation of the neurons. These results indicate that PSD-95 and Narp play important roles in making efficient excitatory synapses in the developing rat olfactory bulb, and suggest that olfactory neurons might first express PSD-95 for making efficient NMDA receptors and thereafter express Narp for efficient AMPA receptors.[1]

References

  1. Developmental changes in PSD-95 and Narp mRNAs in the rat olfactory bulb. Shu, F., Ohno, K., Wang, T., Kuriyama, K., Ueki, T., Kanayama, N., Sato, K. Brain Res. Dev. Brain Res. (2001) [Pubmed]
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