Regular ArticleATP induces intracellular calcium increases and actin cytoskeleton disaggregation via P2x receptors
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2017, Biochimica et Biophysica Acta - Molecular Basis of DiseaseCitation Excerpt :Specimens were imaged using a confocal laser scanning microscope (Leica SP8X) with a 63 × oil immersion lens. The F-actin network was labeled and visualized by fluorescence microscopy (Olympus IX51) as described by Pubill et al. with minor modifications [33]. Digitized fluorescence images of the F-actin network were used to generate fluorescence intensity profiles (from basal membrane to nucleus) using CellSens imaging software.
Functional expression of P2 purinoceptors in a primary neuroglial cell culture of the rat arcuate nucleus
2016, NeuroscienceCitation Excerpt :The authors claim, that the membranes used might contain “a large number of high affinity binding sites for [35S]dATPαS that are not related to P2Y receptor subtypes”. Finally, the use of [35S]dATPαS for purinoceptor characterization in the rat mammary tumor cell line WRK-1 revealed high affinity binding for the radioligand and demonstrated a pharmacological profile in competitive displacements studies “close to that of P2X ionotropic calcium channels” (Pubill et al., 2001). The pharmacological profiles of rat P2X2 (ATP ⩾ 2-MeSATP >> α,β-meATP) and P2Y1 (MRS2365 > 2-MeSADP = 2-MeSATP > ATP >> α,β-meATP) receptors, with regard to the agonists applied in the present investigation (Burnstock, 2007; von Kügelgen 2008; Jacobson, 2010), and the profile of these agonists to displace [35S]dATPαS from its binding sites (2-MeSATP ⩾ ATP; variable affinity of α,β-meATP) (Simon et al., 1995; Pubill et al., 2001), foster the statement, that this radioligand may bind to both purinoceptor subtypes in rat hypothalamic tissue.
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Correspondence to: Dr G. Dayanithi, INSERM, U 432,University of Montpellier 11, F-34095 Montpellier cedex 5, France.Tel.: +33 467 14 93 25; fax : +33 467 14 36 96; e-mail:[email protected]