Cited by 42Tactile and Sensory InteractionsNeuroscience and Neuropharmacology ResearchNeurogenesis and neuroplasticity mechanisms

Nursing-Induced Somatosensory Cortex Plasticity: Temporally Decoupled Changes in Neuronal Receptive Field Properties Are Accompanied by Modifications in Activity-Dependent Protein Expression

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Rosselet, Céline, Zennou-Azogui, Yoh'i, Xerri, Christian·2006·The Journal of Neuroscience

Abstract

This study is an attempt to gain insight into the malleability of representational maps in the primary somatosensory cortex in relation to the expression of proteins involved in inhibitory and excitatory neurotransmitter systems that contribute to maintain these maps in a dynamic state. Malleability of somatosensory maps is characterized by changes in the sizes of neuron receptive fields (RFs) affecting the representational grain and in the locations and submodalities of these RFs modifying the map extent. The concomitance of these alterations remains so far hypothetical. We used nursing as an evolving source of ethologically significant cutaneous stimulation. This cyclic behavior is particularly suited to investigating the time course of experience-dependent cortical changes. Electrophysiological maps of the ventrum skin were recorded twice in the same lactating rats between nursing initiation and several weeks after nursing. We found that reduction in RF size occurred earlier than map expansion. As nursing time declined, the map expansion was maintained longer than the RF sharpening. Based on this difference in time course, we compared the expression patterns of several activity-dependent proteins in relation to the RF plasticity. Western blot analysis showed an increase in glutamic acid decarboxylase expression that was concomitant with RF contraction. In contrast, NR2A subunit of NMDA and α calcium/calmodulin kinase type II were upregulated at times when map expansion was observed. We propose that inhibitory and excitatory plasticity mechanisms operating with different time courses may contribute to the temporal dissociation of nursing-induced RF reshaping and map expansion.

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Crossref · 10.1523/jneurosci.3253-06.2006

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  • Long-lasting plasticity in somatosensory and auditory cortex contributes to increased responsiveness to infant cues.

    “long-lasting plasticity in somatosensory (Rosselet et al., 2006; Xerri et al., 1994) and auditory (Cohen et al., 2011; Cohen and Mizrahi, 2015; Liu et al., 2006; Liu and Schreiner, 2007; Marlin et al., 2015; Shepard et al., 2016; Tasaka et al., 2018) cortex have recently been shown to contribute to increased responsiveness to infant cues”

    From Neuromodulation of maternal circuits by oxytocin (2019) · cites this paper as Rosselet et al., 2006

  • Receptive fields of S1 neurons representing the nipple-bearing skin of the ventrum in lactating rats are reduced prior to S1 map extension, at one week after nursing onset.

    “Receptive fields of S1 neurons representing the nipple-bearing skin of the ventrum in lactating rats are reduced prior to S1 map extension, at one week after nursing onset”

    From Neuromodulation of maternal circuits by oxytocin (2019) · cites this paper as Rosselet et al., 2006

  • In the primary area of the somatosensory cortex, the representation of the ventrum is expanded in primiparous lactating rats compared to virgins.

    “In the primary area of the somatosensory cortex (S1), the representation of the ventrum is expanded in primiparous lactating rats compared to virgins”

    From Neuromodulation of maternal circuits by oxytocin (2019) · cites this paper as Rosselet et al., 2006

  • The expansion of the ventrum representation is displayed by a two-fold increase of the area representing the nipples and areolae.

    “This is displayed by a two-fold increase of the area representing the nipples and areolae”

    From Neuromodulation of maternal circuits by oxytocin (2019) · cites this paper as Rosselet et al., 2006

  • The size of receptive fields returns to baseline levels at three weeks after nursing onset, prior to weaning.

    “the size of receptive fields return to baseline levels at three weeks after nursing onset, prior to weaning”

    From Neuromodulation of maternal circuits by oxytocin (2019) · cites this paper as Rosselet et al., 2006

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Authors
Rosselet, C., Zennou-Azogui, Y., & Xerri, C.
Affiliations
Centre National de la Recherche Scientifique (FR)
Venue
The Journal of Neuroscience
Published
2006-10-18
Volume
26
Issue
42
Pages
10667-10676
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2125107631
Cited by
42
References
61
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 5 · 2020: 2 · 2019: 1 · 2018: 4 · 2016: 4 · 2015: 2 · 2014: 1 · 2013: 2 · 2012: 1
FWCI
0.97
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
primary somatosensory cortex, cortical plasticity, nursing, receptive field size, somatosensory maps, glutamic acid decarboxylase, calcium/calmodulin-dependent protein kinase II, lactating rats, experience-dependent development
MeSH terms
Animals, Brain Mapping, Female, Glutamate Decarboxylase, Isoenzymes, Lactation, Nerve Tissue Proteins, Neuronal Plasticity, Somatosensory Cortex, Time Factors, Receptors, N-Methyl-D-Aspartate, Rats, Long-Evans, Rats

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