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Behavioral and molecular effects of pharmacological modulation of the P2Y2 receptors in an animal model of Alzheimer's Disease

Grant number: 18/17504-5
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2019
Effective date (End): August 31, 2021
Field of knowledge:Biological Sciences - Pharmacology - Neuropsychopharmacology
Principal researcher:Alexander Henning Ulrich
Grantee:Deidiane Elisa Ribeiro
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:18/07366-4 - Purine and kinin receptors as targets of study and therapeutic interventions in neurological diseases, AP.TEM

Abstract

Alzheimer's Disease (AD) is a disabling psychiatric disorder that affects approximately 18 million people worldwide. The causes of this disorder are not well elucidated given their complexity, and the symptoms generally progress from memory loss to language and motor impairment, often including depression. Despite its great impact on the patient, family and society, the therapies available for this disorder are ineffective and only palliative. Therefore, the study of the mechanisms involved in the pathogenesis of AD has an essential role in the search for new pharmacological targets for its treatment. P2Y2 receptors (P2Y2R) are activated by adenosine triphosphate (ATP) and uridine triphosphate (UTP) and are coupled to Gq protein. The stimulation of these receptors promotes the activation of the pathway phospholipase C (PLC) / inositol 1,4,5-triphosphate (IP3) / protein kinase C (PKC), besides regulating the migration, proliferation and release of growth factors. Studies still suggest a neuroprotective role of P2Y2R receptors in AD. However, the evaluation of these receptors function on the molecular and behavioral changes related to the cognitive and depressive symptoms of AD in mice treated intra-cerebroventricular (i.c.v.) with amyloid-² oligomers (AßO), an in vivo model of sporadic AD, was never investigated. Based on this, the present project intends to analyze the effect of the P2Y2R modulation (agonist or antagonist i.c.v. infusion) on the recognition memory (object recognition test), depressive-related behaviors (forced swimming test and sucrose preference) and molecular changes (Tau protein, enzymes that regulate the levels of A²1-42, proteins involved of neuroplastic, neurotoxic and neuroinflammatory processes) related to AD in the prefrontal cortex (CPF) and hippocampus (Hpc) of mice i,c.v, treated with A²O. In addition, the effect of i.c.v. infusion with P2Y2R agonist or antagonist on expression of neuronal and glial markers in the CPF and Hpc of these animals will also be evaluated.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBEIRO, DEIDIANE ELISA; OLIVEIRA-GIACOMELLI, AGATHA; GLASER, TALITA; ARNAUD-SAMPAIO, VANESSA F.; ANDREJEW, ROBERTA; DIECKMANN, LUIZ; BARANOVA, JULIANA; LAMEU, CLAUDIANA; RATAJCZAK, MARIUSZ Z.; ULRICH, HENNING. Hyperactivation of P2X7 receptors as a culprit of COVID-19 neuropathology. MOLECULAR PSYCHIATRY, v. 26, n. 4 DEC 2020. Web of Science Citations: 2.
GLASER, TALITA; ANDREJEW, ROBERTA; OLIVEIRA-GIACOMELLI, AGATHA; RIBEIRO, DEIDIANE ELISA; MARQUES, LUCAS BONFIM; YE, QING; REN, WEN-JING; SEMYANOV, ALEXEY; ILLES, PETER; TANG, YONG; ULRICH, HENNING. Purinergic Receptors in Basal Ganglia Diseases: Shared Molecular Mechanisms between Huntington's and Parkinson's Disease. NEUROSCIENCE BULLETIN, v. 36, n. 11, SI, p. 1299-1314, NOV 2020. Web of Science Citations: 3.
ANDREJEW, ROBERTA; OLIVEIRA-GIACOMELLI, AGATHA; RIBEIRO, DEIDIANE ELISA; GLASER, TALITA; ARNAUD-SAMPAIO, VANESSA FERNANDES; LAMEU, CLAUDIANA; ULRICH, HENNING. The P2X7 Receptor: Central Hub of Brain Diseases. FRONTIERS IN MOLECULAR NEUROSCIENCE, v. 13, JUL 31 2020. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.