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Front. Mol. Neurosci. | doi: 10.3389/fnmol.2018.00456

Hyperforin potentiates antidepressant-like activity of lanicemine in mice

 Bartłomiej Pochwat1*,  Bernadeta Szewczyk1, Katarzyna Kotarska1, Anna Rafało-Ulińska1,  Marcin Siwiec1,  Joanna E. Sowa1, Krzysztof Tokarski1,  Agata Siwek2,  Alexandre Bouron3, Kristina Friedland4 and  Gabriel Nowak1, 2*
  • 1Department of Neurobiology, Laboratory of Neurobiology of Trace Elements, Institute of Pharmacology, Polish Academy of Sciences, Poland
  • 2Faculty of Pharmacy, Department of Pharmacobiology, Jagiellonian University Medical College, Poland
  • 3CNRS, CEA, BIG-LCBM, 38000 Grenoble, Université Grenoble Alpes, France
  • 4Pharmacology and Toxicology, Insitute of Pharmacy and Biochemistr, Johannes Gutenberg University Mainz, Germany

N-methyl-D-aspartate receptor (NMDAR) modulators induce rapid and sustained antidepressant like-activity in rodents through a molecular mechanism of action that involves the activation of Ca2+ dependent signaling pathways. Moreover, ketamine, a global NMDAR antagonist is a potent, novel and atypical drug that has been successfully used to treat major depressive disorder (MDD). However, because ketamine evokes unwanted side effects, alternative strategies have been developed for the treatment of depression. The objective of the present study was to determine the antidepressant effects of either a single dose of hyperforin or lanicemine versus their combined effects in mice. Hyperforin modulates intracellular Ca2+ levels by activating Ca2+-conducting the non-selective canonical transient receptor potential 6 channel (TRPC6) channels. Lanicemine, on the other hand, blocks NMDARs and regulates Ca2+ dependent processes. To evaluate the antidepressant-like activity of hyperforin and lanicemine, a set of in vivo (behavioral) and in vitro methods (western blotting, Ca2+ imaging studies, electrophysiological and radioligand binding assays) was employed. Combined administration of hyperforin and lanicemine evoked long-lasting antidepressant-like effects in both naïve and chronic corticosterone-treated mice while also enhancing the expression of the synapsin I, GluA1 subunit and brain derived neurotrophic factor (BDNF) proteins in the frontal cortex. In Ca2+ imaging studies, lanicemine enhanced Ca2+ influx induced by hyperforin. Moreover, compounds such as MK-2206 (Akt kinase inhibitor) inhibited the antidepressant-like activity of hyperforin in the tail suspension test (TST). Hyperforin reversed disturbances induced by MK-801 in the novel object recognition (NOR) test and had no effects on NMDA currents and binding to NMDAR. Our results suggest that co-administration of hyperforin and lanicemine induces long-lasting antidepressant effects in mice and that both substances may have different molecular targets.

Keywords: Depression, NMDA - receptor, Hyperforin, lanicemine, TRPC 6, Ketamine

Received: 31 Jul 2018; Accepted: 26 Nov 2018.

Edited by:

Boldizsar Czeh, Department of Laboratory Medicine, University of Pécs, Hungary

Reviewed by:

Nashat Abumaria, Fudan University, China
Vivian B. Neis, Federal University of Santa Catarina, Brazil
Mira Jakovcevski, Max-Planck-Institut für Psychiatrie, Germany  

Copyright: © 2018 Pochwat, Szewczyk, Kotarska, Rafało-Ulińska, Siwiec, Sowa, Tokarski, Siwek, Bouron, Friedland and Nowak. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
PhD. Bartłomiej Pochwat, Institute of Pharmacology, Polish Academy of Sciences, Department of Neurobiology, Laboratory of Neurobiology of Trace Elements, Krakow, Poland, pochwat@if-pan.krakow.pl
Prof. Gabriel Nowak, Institute of Pharmacology, Polish Academy of Sciences, Department of Neurobiology, Laboratory of Neurobiology of Trace Elements, Krakow, Poland, nowak@if-pan.krakow.pl