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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Endothelinergic Contractile Hyperreactivity in Rat Contralateral Carotid to Balloon Injury: Integrated Role for ETB Receptors and Superoxide Anion

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Author(s):
Pernomian, Larissa ; Gimenes, Lilian R. ; Gomes, Mayara S. ; do Vale, Bruno N. ; Cardoso, Cristina R. B. ; de Oliveira, Ana M. ; Moreira, Josimar D.
Total Authors: 7
Document type: Journal article
Source: BIOMED RESEARCH INTERNATIONAL; 2017.
Web of Science Citations: 0
Abstract

Temporal consequences of neurocompensation to balloon injury on endothelinergic functionality in rat contralateral carotid were evaluated. Rats underwent balloon injury in left carotid and were treated with CP-96345 (NK1 antagonist). Concentration-response curves for endothelin-1 were obtained in contralateral (right) carotid at 2, 8, 16, 30, or 45 days after surgery in the absence or presence of BQ-123 (ETA antagonist), BQ-788 (ETB antagonist), or Tempol (superoxide-dismutase mimic). Endothelin-1-induced calcium mobilization was evaluated in functional assays carried out with BQ-123, BQ-788, or Tempol. Endothelin-1-induced NADPH oxidase-driven superoxide generation was measured by lucigenin chemiluminescence assays performed with BQ-123 or BQ-788. Endothelin-1-induced contraction was increased in contralateral carotid from the sixteenth day after surgery. This response was restored in CP-96345-treated rats. Endotheliumremoval or BQ-123 did not change endothelin-1-induced contraction in contralateral carotid. This response was restored by BQ-788 or Tempol. Contralateral carotid exhibited an increased endothelin-1-induced calcium mobilization, which was restored by BQ-788 or Tempol. Contralateral carotid exhibited an increased endothelin-1-induced lucigenin chemiluminescence, which was restored by BQ-788. We conclude that the NK1-mediated neurocompensatory response to balloon injury elicits a contractile hyperreactivity to endothelin-1 in rat contralateral carotid by enhancing the muscular ETB-mediated NADPH oxidase-driven generation of superoxide, which activates calcium channels. (AU)

FAPESP's process: 13/08216-2 - CRID - Center for Research in Inflammatory Diseases
Grantee:Fernando de Queiroz Cunha
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 12/00640-7 - Study of the consequences of the inflammatory process induced by AT1 receptors during atherosclerosis on the ACE2 - angiotensin-(1-7) - Mas axis in mouse aorta and the involvement of Mas receptors in the vaso- and atheroprotective effects of losartan
Grantee:Larissa Pernomian
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/17740-0 - Planning, development ánd pharmacological evaluation of new aryl hydrocarbon receptors (AhR) antagonists that are candidates for atheroprotective drugs
Grantee:Larissa Pernomian
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 12/09019-3 - Consequences of dyslipidemia on the ACE - Ang II - AT1 and ACE2 - Ang-(1-7) - mas axes from the angiotensinergic system in aorta from young and adult LDLr knockout mice
Grantee:Ana Maria de Oliveira
Support type: Regular Research Grants
FAPESP's process: 09/01005-0 - Influence of oxidative stress on the response to angiotensin II in contralateral carotid of diabetic rat after balloon-catheter injury
Grantee:Larissa Pernomian
Support type: Scholarships in Brazil - Doctorate