Down-regulation of adenosine A1 and A2A receptors in peripheral cells from idiopathic normal-pressure hydrocephalus patients

Martina Casati, Beatrice Arosio, Cristina Gussago, Evelyn Ferri, Lorenzo Magni, Lara Assolari, Valeria Scortichini, Carolina Nani, Paolo Dionigi Rossi, Daniela Mari

Research output: Contribution to journalArticlepeer-review

Abstract

Idiopathic normal-pressure hydrocephalus (iNPH) is a neurological disease that usually develops in the elderly. Natural history of iNPH is still unknown. It has been hypothesized that cerebrovascular diseases could have a role in etiology of chronic hydrocephalus and studies show an increased prevalence of cardiovascular diseases in iNPH patients. Moreover, evidences show a possible alteration of immune system in iNPH patients. Adenosine (Ado) is a metabolite produced in response to metabolic stress and injury. Adenosine and its receptors play an important role in vascular protection and in the modulation of inflammatory reactions and neuroinflammation. Our aim is to evaluate gene and protein expression of A1R and A2AR in the peripheral blood mononuclear cells (PBMCs) from iNPH patients compared to control subjects. We investigate if Ado system, that plays an important role in central nervous system, in vascular system, and also in inflammation, is involved in pathophysiology of iNPH disease. Our analysis showed that A1R mRNA levels and A1R density in PBMCs from iNPH patients were significantly lower than CT subjects (0.84 ± 0.12 and 2.42 ± 0.42, p <0.001 and 0.31 ± 0.02 and 0.42 ± 0.04, p = 0.043; respectively). About A2AR, the gene expression in PBMCs was significantly lower in iNPH than CT (0.65 ± 0.09 and 1.5 ± 0.14, p <0.001) as well as there was a trend in protein expression: iNPH and CT (0.51 ± 0.05 and 0.62 ± 0.03; p = 0.172). This preliminary study underlines the involvement of Ado system in iNPH disease whose pathophysiology is still unclear.

Original languageEnglish
Pages (from-to)196-199
Number of pages4
JournalJournal of the Neurological Sciences
Volume361
DOIs
Publication statusPublished - Feb 15 2016

Keywords

  • Adenosine A receptor
  • Idiopathic normal-pressure hydrocephalus

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology

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