Planta Med 2023; 89(09): 879-889
DOI: 10.1055/a-2005-5497
Biological and Pharmacological Activity
Original Papers

Anti-glutamatergic Effects of Three Lignan Compounds: Arctigenin, Matairesinol and Trachelogenin – An ex vivo Study on Rat Brain Slices

Peter Kiplangʼat Koech
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
,
Gergely Jócsák
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
2   Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
,
Imre Boldizsár
3   Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
4   Department of Pharmacognosy, Semmelweis University, Budapest, Hungary
,
Kinga Moldován
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
,
Sándor Borbély
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
5   Neuronal Network and Behavior Research Group, Institute of Experimental Medicine, ELKH, Budapest, Hungary
,
Ildikó Világi
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
,
Arpád Dobolyi
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
6   MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Eötvös Loránd University and the Hungarian Academy of Sciences, Budapest, Hungary
,
1   Department of Physiology and Neurobiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
› Author Affiliations
Supported by: Tempus Közalapítvány Stipendium Hungaricum scholarship
Supported by: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal NAP_NKFIH-4300-1/2017-NKP_17
Supported by: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal OTKA K-134221
Supported by: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal OTKA K-135712
Supported by: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal TKP2020-IKA-05

Abstract

Arctigenin is a bioactive dibenzylbutyrolactone-type lignan exhibiting various pharmacological activities. The neuroprotective effects of arctigenin were demonstrated to be mediated via inhibition of AMPA and KA type glutamate receptors in the somatosensory cortex of the rat brain. The aim of this study was to compare the effects of arctigenin with matairesinol and trachelogenin on synaptic activity in ex vivo rat brain slices. Arctigenin, matairesinol and trachelogenin were isolated from Arctium lappa, Centaurea scabiosa and Cirsium arvense, respectively, and applied on brain slices via perfusion medium at the concentration range of 0.5 – 40 µM. The effects of the lignans were examined in the CA1 hippocampus and the somatosensory cortex by recording electrically evoked field potentials. Arctigenin and trachelogenin caused a significant dose-dependent decrease in the amplitude of hippocampal population spikes (POPS) and the slope of excitatory postsynaptic potentials (EPSPs), whereas matairesinol (1 µM and 10 µM) decreased EPSP slope but had no effect on POPS amplitude. Trachelogenin effect (0.5 µM, 10 µM, 20 µM) was comparable to arctigenin (1 µM, 20 µM, 40 µM) (p > 0.05). In the neocortex, arctigenin (10 µM, 20 µM) and trachelogenin (10 µM) significantly decreased the amplitude of evoked potential early component, while matairesinol (1 µM and 10 µM) had no significant effect (p > 0.05). The results suggest that trachelogenin and arctigenin act via inhibition of AMPA and KA receptors in the brain and trachelogenin has a higher potency than arctigenin. Thus, trachelogenin and arctigenin could serve as lead compounds in the development of neuroprotective drugs.

Supporting Information



Publication History

Received: 19 October 2022

Accepted after revision: 01 January 2023

Accepted Manuscript online:
02 January 2023

Article published online:
16 February 2023

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