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Research ArticleResearch Article: New Research, Cognition and Behavior

NMDA Receptors in Accumbal D1 Neurons Influence Chronic Sugar Consumption and Relapse

Shoupeng Wei, Sarah Hertle, Rainer Spanagel and Ainhoa Bilbao
eNeuro 27 April 2021, 8 (3) ENEURO.0029-21.2021; DOI: https://doi.org/10.1523/ENEURO.0029-21.2021
Shoupeng Wei
1Behavioral Genetics Research Group, Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, Mannheim, 68159, Germany
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Sarah Hertle
1Behavioral Genetics Research Group, Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, Mannheim, 68159, Germany
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Rainer Spanagel
2Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, Mannheim, 68159, Germany
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Ainhoa Bilbao
1Behavioral Genetics Research Group, Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, Mannheim, 68159, Germany
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    Figure 1.

    Characterization of chronic sugar drinking, SDE, and locomotor activity in male and female GluN1DATCreERT2 mice. A, G, Baseline sugar intake in g/kg/d after free-choice access to a bottle containing a sugar solution (5% w/v) and a bottle with tap water in the homecage for eight weeks in wild-type male (n = 26), female (n = 25), and GluN1DATCreERT2 male (n = 25) and female (n = 24) mice. B, H, Baseline locomotor activity after eight weeks of free-choice sugar drinking. C, I, Diurnal drinking pattern during baseline sucrose consumption and during the SDE. D, J, Diurnal activity pattern during baseline sucrose consumption and during the SDE. E, K, Relapse behavior measured in % change from baseline during the first 4 h of the SDE. F, L, Relative change in locomotor activity during the first 4 h of the SDE in relation to baseline activity; * indicates significant changes (p < 0.001) in sucrose consumption or activity during the SDE when compared with baseline; # indicates significant (p < 0.05) genotype differences.

  • Figure 2.
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    Figure 2.

    Characterization of chronic sugar drinking, SDE, and locomotor activity in male and female GluN1D1CreERT2 mice. A, G, Baseline sugar intake in g/kg/d after free-choice access to a bottle containing a sugar solution (5% w/v) solution and a bottle with tap water in the homecage for eight weeks in wild-type male (n = 19), female (n = 20), and GluN1D1CreERT2 male (n = 21) and female (n = 19) mice. B, H, Baseline locomotor activity after eight weeks of free-choice sugar drinking. C, I, Diurnal drinking pattern during baseline sucrose consumption and during the SDE. D, J, Diurnal activity pattern during baseline sucrose consumption and during the SDE. E, K, Relapse behavior measured in % change from baseline during the first 4 h of the SDE. F, L, Relative change in locomotor activity during the first 4 h of the SDE in relation to baseline activity; * indicates significant changes (p < 0.05) in sucrose consumption or activity during the SDE when compared with baseline; # indicates significant (p < 0.05 or p < 0.01 for A, G, L, K, respectively) genotype differences.

  • Figure 3.
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    Figure 3.

    Characterization of chronic sugar drinking, SDE, and locomotor activity in male and female GluA1DATCreERT2 mice. A, G, Baseline sugar intake in g/kg/d after free-choice access to a bottle containing a sugar solution (5% w/v) solution and a bottle with tap water in the homecage for eight weeks in wild-type male (n = 26), female (n = 25), and GluA1DATCreERT2 male (n = 26) and female (n = 27) mice. B, H, Baseline locomotor activity after eight weeks of free-choice sugar drinking. C, I, Diurnal drinking pattern during baseline sucrose consumption and during the SDE. D, J, Diurnal activity pattern during baseline sucrose consumption and during the SDE. E, K, Relapse behavior measured in % change from baseline during the first 4 h of the SDE. F, L, Relative change in locomotor activity during the first 4 h of the SDE in relation to baseline activity; * indicates significant changes (p < 0.01) in sucrose consumption or activity during the SDE when compared with baseline.

  • Figure 4.
    • Download figure
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    Figure 4.

    Characterization of chronic sugar drinking, SDE, and locomotor activity in male and female GluA1D1CreERT2 mice. A, G, Baseline sugar intake in g/kg/d after free-choice access to a bottle containing a sugar solution (5% w/v) solution and a bottle with tap water in the homecage for eight weeks in wild-type male (n = 19), female (n = 20), and GluA1D1CreERT2 male (n = 18) and female (n = 20) mice. B, H, Baseline locomotor activity after eight weeks of free-choice sugar drinking. C, I, Diurnal drinking pattern during baseline sucrose consumption and during the SDE. D, J, Diurnal activity pattern during baseline sucrose consumption and during the SDE. E, K, Relapse behavior measured in % change from baseline during the first 4 h of the SDE. F, L, Relative change in locomotor activity during the first 4 h of the SDE in relation to baseline activity; * indicates significant changes (p < 0.05) in sucrose consumption or activity during the SDE when compared with baseline; # indicates significant (p < 0.05) genotype differences.

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NMDA Receptors in Accumbal D1 Neurons Influence Chronic Sugar Consumption and Relapse
Shoupeng Wei, Sarah Hertle, Rainer Spanagel, Ainhoa Bilbao
eNeuro 27 April 2021, 8 (3) ENEURO.0029-21.2021; DOI: 10.1523/ENEURO.0029-21.2021

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NMDA Receptors in Accumbal D1 Neurons Influence Chronic Sugar Consumption and Relapse
Shoupeng Wei, Sarah Hertle, Rainer Spanagel, Ainhoa Bilbao
eNeuro 27 April 2021, 8 (3) ENEURO.0029-21.2021; DOI: 10.1523/ENEURO.0029-21.2021
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Keywords

  • addictive phenotypes
  • glutamate receptors
  • mesolimbic system
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