Abstract
NMDA receptor (NMDAR) antagonists induce in perinatal rodent cortical apoptosis and protracted schizophrenia-like alterations ameliorated by antipsychotic treatment. The broad-spectrum antibiotic minocycline elicits antipsychotic and neuroprotective effects. Here we tested, if minocycline protects also against apoptosis triggered by the NMDAR antagonist MK-801 at postnatal day 7. Surprisingly, minocycline induced widespread cortical apoptosis and exacerbated MK-801-triggered cell death. In some areas such as the subiculum, the pro-apoptotic effect of minocycline was even more pronounced than that elicited by MK-801. These data reveal among antipsychotics unique pro-apoptotic properties of minocycline, raising concerns regarding consequences for brain development and the use in children.
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Acknowledgments
We thank to Katja Lankisch, Natascha Pfeiffer and Christof Dormann for their excellent technical support. This work was supported by a grant from the Olympia-Morata-Programm of the Medical Faculty of the University of Heidelberg to I.I., the Sonderforschungsbereich (SFB) 636/B03 and the German Ministry of Education and Research (BMBF, 01GQ1003B) to P.G.
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Inta, I., Vogt, M.A., Vogel, A.S. et al. Minocycline exacerbates apoptotic neurodegeneration induced by the NMDA receptor antagonist MK-801 in the early postnatal mouse brain. Eur Arch Psychiatry Clin Neurosci 266, 673–677 (2016). https://doi.org/10.1007/s00406-015-0649-2
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DOI: https://doi.org/10.1007/s00406-015-0649-2