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Title: Neuromodulatory effects of guanine-based purines in health and disease
Author: Tasca, Carla I.
Lanznaster, Débora
Oliveira, Karen A.
Fernández Dueñas, Víctor
Ciruela Alférez, Francisco
Keywords: Trifosfat de guanosina
Malaltia de Parkinson
Malaltia d'Alzheimer
Guanosine triphosphatase
Parkinson's disease
Alzheimer's disease
Issue Date: 23-Oct-2018
Publisher: Frontiers Media
Abstract: The function of guanine-based purines (GBPs) is mostly attributed to the intracellular modulation of heteromeric and monomeric G proteins. However, extracellular effects of guanine derivatives have also been recognized. Thus, in the central nervous system (CNS), a guanine-based purinergic system that exerts neuromodulator effects, has been postulated. The thesis that GBPs are neuromodulators emerged from in vivo and in vitro studies, in which neurotrophic and neuroprotective effects of these kinds of molecules (i.e., guanosine) were demonstrated. GBPs induce several important biological effects in rodent models and have been shown to reduce seizures and pain, stabilize mood disorder behavior and protect against gliomas and diseases related with aging, such as ischemia or Parkinson and Alzheimer diseases. In vitro studies to evaluate the protective and trophic effects of guanosine, and of the nitrogenous base guanine, have been fundamental for understanding the mechanisms of action of GBPs, as well as the signaling pathways involved in their biological roles. Conversely, although selective binding sites for guanosine have been identified in the rat brain, GBP receptors have not been still described. In addition, GBP neuromodulation may depend on the capacity of GBPs to interact with well-known membrane proteins in glutamatergic and adenosinergic systems. Overall, in this review article, we present up-to-date GBP biology, focusing mainly on the mechanisms of action that may lead to the neuromodulator role of GBPs observed in neurological disorders.
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It is part of: Frontiers in Cellular Neuroscience, 2018, vol. 12, p. 376
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ISSN: 1662-5102
Appears in Collections:Articles publicats en revistes (Patologia i Terapèutica Experimental)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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