Planta Med 2022; 88(07): 548-558
DOI: 10.1055/a-1527-1390
Biological and Pharmacological Activity
Original Papers

The Reassessed Impact of Nicotine against Neurotoxicity in Mesencephalic Dopaminergic Cell Cultures and Neuroblastoma N18TG2 Cells

1   Department of Pharmacology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland
,
2   Department of Pathology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
,
Christopher Krewenka
3   Institute of Medical Biochemistry, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
,
Barbara Kranner
3   Institute of Medical Biochemistry, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
,
Rudolf Moldzio
3   Institute of Medical Biochemistry, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
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Abstract

Neuroprotective effects of nicotine are still under debate, so further studies on its effectiveness against Parkinsonʼs disease are required. In our present study, we used primary dopaminergic cell cultures and N18TG2 neuroblastoma cells to investigate the effect of nicotine and its neuroprotective potential against rotenone toxicity. Nicotine protected dopaminergic (tyrosine hydroxylase immunoreactive) neurons against rotenone. This effect was not nAChR receptor-dependent. Moreover, the alkaloid at a concentration of 5 µM caused an increase in neurite length, and at a concentration of 500 µM, it caused an increase in neurite count in dopaminergic cells exposed to rotenone. Nicotine alone was not toxic in either cell culture model, while the highest tested concentration of nicotine (500 µM) caused growth inhibition of N18TG2 neuroblastoma cells. Nicotine alone increased the level of glutathione in both cell cultures and also in rotenone-treated neuroblastoma cells. The obtained results may be helpful to explain the potential neuroprotective action of nicotine on neural cell cultures.

Highlights
  1. Nicotine increases the neurite length and the neurite count in cells exposed to rotenone

  2. Nicotine increases the level of glutathione in cells

  3. Neuroprotection of nicotine against complex I inibition does not target mitochondria



Publikationsverlauf

Eingereicht: 22. Dezember 2020

Angenommen nach Revision: 05. Juni 2021

Artikel online veröffentlicht:
06. Juli 2021

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