Chronic lithium treatment alters NMDA and AMPA receptor synaptic availability and dendritic spine organization in the rat hippocampus
Background: The mechanisms underlying the action of lithium (LiCl) in bipolar disorder - (BD) are still far from being completely understood. Previous evidence has revealed that BD is characterized - by glutamate hyperexcitability, suggesting that LiCl may act, at least partially, by toning down - g...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
Current neuropharmacology
Year: 2024, Jahrgang: 22, Heft: 12, Pages: 2045-2058 |
| ISSN: | 1875-6190 |
| DOI: | 10.2174/1570159X21666230913144420 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.2174/1570159X21666230913144420 Verlag, kostenfrei, Volltext: http://www.eurekaselect.com/article/134503 
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| Verfasserangaben: | Lucia Caffino, Giorgia Targa, Anne Stephanie Mallien, Francesca Mottarlini, Beatrice Rizzi, Judith R. Homberg, Peter Gass and Fabio Fumagalli |
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| 245 | 1 | 0 | |a Chronic lithium treatment alters NMDA and AMPA receptor synaptic availability and dendritic spine organization in the rat hippocampus |c Lucia Caffino, Giorgia Targa, Anne Stephanie Mallien, Francesca Mottarlini, Beatrice Rizzi, Judith R. Homberg, Peter Gass and Fabio Fumagalli |
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| 520 | |a Background: The mechanisms underlying the action of lithium (LiCl) in bipolar disorder - (BD) are still far from being completely understood. Previous evidence has revealed that BD is characterized - by glutamate hyperexcitability, suggesting that LiCl may act, at least partially, by toning down - glutamatergic signaling abnormalities. - - - Objective: In this study, taking advantage of western blot and confocal microscopy, we used a combination - of integrative molecular and morphological approaches in rats exposed to repeated administration - of LiCl at a therapeutic dose (between 0.6 and 1.2 mmol/l) and sacrificed at two different time - points, i.e., 24 hours and 7 days after the last exposure. - - - Results: We report that repeated LiCl treatment activates multiple, parallel, but also converging forms - of compensatory neuroplasticity related to glutamatergic signaling. More specifically, LiCl promoted a - wave of neuroplasticity in the hippocampus, involving the synaptic recruitment of GluN2A-containing - NMDA receptors, GluA1-containing AMPA receptors, and the neurotrophin BDNF that are indicative - of a more plastic spine. The latter is evidenced by morphological analyses showing changes in dendritic - spine morphology, such as increased length and head diameter of such spines. These changes may - counteract the potentially negative extra-synaptic movements of GluN2B-containing NMDA receptors - as well as the increase in the formation of GluA2-lacking Ca2+-permeable AMPA receptors. - - - Conclusion: Our findings highlight a previously unknown cohesive picture of the glutamatergic implications - of LiCl action that persist long after the end of its administration, revealing for the first time - a profound and persistent reorganization of the glutamatergic postsynaptic density receptor composition - and structure. | ||
| 700 | 1 | |a Targa, Giorgia |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mallien, Anne Stephanie |e VerfasserIn |0 (DE-588)1135283532 |0 (DE-627)890242437 |0 (DE-576)489740111 |4 aut | |
| 700 | 1 | |a Mottarlini, Francesca |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rizzi, Beatrice |e VerfasserIn |4 aut | |
| 700 | 1 | |a Homberg, Judith R. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gass, Peter |d 1963- |e VerfasserIn |0 (DE-588)13015945X |0 (DE-627)492009694 |0 (DE-576)298033771 |4 aut | |
| 700 | 1 | |a Fumagalli, Fabio |e VerfasserIn |4 aut | |
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