Abstract:
Vasodilation by agents such as bradykinin and ATP is dependent on nitric oxide, the endothelium-dependent relaxing factor (EDRF). The release of EDRF results in elevation of cGMP in endothelial and smooth muscle cells (9). The signaling pathway that leads to increases in cGMP is not completely understood. The role of protein kinase C (PKC) in the elevation of cGMP induced by ATP and bradykinin was studied in cultured porcine aortic endothelial cells, by measuring PKC phosphorylation of a substrate and by measuring cGMP levels by radioimmunoassay. Extracellular ATP and bradykinin simultaneously elevated cGMP levels and PKC activity. The PKC inhibitors staurosporine, calphostin C, and Cremophor EL (T. Tamaoki and H. Nakano. Bio/Technology 8: 732-735, 1990; F. K. Zhao, L. F. Chuang, M. Israel, and R. Y. Chuang. Biochem. Biophys. Res. Commun. 159: 1359-1367, 1989) prevented the elevation of cGMP elicited by ATP and reduced that produced by bradykinin. Cremophor did not affect the elevation of cGMP by nitroprusside, an agent that directly increases guanylate cyclase activity (9). The PKC activator phorbol 12-myristate 13-acetate, but not a phorbol ester analog inactive on PKC, also elevated cGMP levels. These results suggest that EDRF agonists elevate cGMP in endothelial cells via PKC stimulation.
Registro:
Documento: |
Artículo
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Título: | Extracellular ATP and bradykinin increase cGMP in vascular endothelial cells via activation of PKC |
Autor: | Castro, A.F.; Amorena, C.; Müller, A.; Ottaviano, G.; Tellez-Iñon, M.T.; Taquini, A.C. |
Filiación: | Inst. de Invest. Cardiologicas, Facultad de Medicina, Universidad de Buenos Aires, 1122 Buenos Aires, Argentina Inst. de Ing. Genet. y Biol. Molec., 1428 Buenos Aires, Argentina Escuela de Ciencia y Tecnologia, Univ. Nacional de General San Martin, Buenos Aires, Argentina Dept. of Physiology and Biophysics, Univ. of Texas Medical Branch, Galveston, TX 77555-0641, United States
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Palabras clave: | Endothelium-dependent relaxing factor; Phorbol ester; Protein kinase C inhibitors; adenosine triphosphate; bradykinin; calphostin c; cremophor; cyclic gmp; guanylate cyclase; nitric oxide; nitroprusside sodium; phorbol 13 acetate 12 myristate; phorbol ester derivative; protein kinase c; protein kinase c inhibitor; staurosporine; animal cell; article; controlled study; endothelium cell; enzyme activation; enzyme activity; immunoblotting; nonhuman; polyacrylamide gel electrophoresis; priority journal; protein phosphorylation; radioimmunoassay; swine; vascular endothelium; Adenosine Triphosphate; Animals; Aorta, Thoracic; Bradykinin; Cells, Cultured; Cyclic GMP; Endothelium, Vascular; Enzyme Activation; Enzyme Inhibitors; Fetus; Kinetics; Naphthalenes; NG-Nitroarginine Methyl Ester; Nitric Oxide; Phorbol Esters; Polyethylene Glycols; Protein Kinase C; Staurosporine; Swine; Tetradecanoylphorbol Acetate; Time Factors; Vasodilator Agents; Animalia; Suidae; Sus scrofa |
Año: | 1998
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Volumen: | 275
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Número: | 1 44-1
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Página de inicio: | C113
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Página de fin: | C119
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Título revista: | American Journal of Physiology - Cell Physiology
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Título revista abreviado: | Am. J. Physiol. Cell Physiol.
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ISSN: | 03636143
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CODEN: | AJPCD
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CAS: | Adenosine Triphosphate, 56-65-5; Bradykinin, 58-82-2; calphostin complex; cremophor, 39279-69-1; Cyclic GMP, 7665-99-8; Enzyme Inhibitors; Naphthalenes; NG-Nitroarginine Methyl Ester, 50903-99-6; Nitric Oxide, 10102-43-9; Phorbol Esters; phorbol-12,13-didecanoate, 24928-17-4; Polyethylene Glycols; Protein Kinase C, EC 2.7.1.37; Staurosporine, 62996-74-1; Tetradecanoylphorbol Acetate, 16561-29-8; Vasodilator Agents
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636143_v275_n144-1_pC113_Castro |
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Citas:
---------- APA ----------
Castro, A.F., Amorena, C., Müller, A., Ottaviano, G., Tellez-Iñon, M.T. & Taquini, A.C.
(1998)
. Extracellular ATP and bradykinin increase cGMP in vascular endothelial cells via activation of PKC. American Journal of Physiology - Cell Physiology, 275(1 44-1), C113-C119.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636143_v275_n144-1_pC113_Castro [ ]
---------- CHICAGO ----------
Castro, A.F., Amorena, C., Müller, A., Ottaviano, G., Tellez-Iñon, M.T., Taquini, A.C.
"Extracellular ATP and bradykinin increase cGMP in vascular endothelial cells via activation of PKC"
. American Journal of Physiology - Cell Physiology 275, no. 1 44-1
(1998) : C113-C119.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636143_v275_n144-1_pC113_Castro [ ]
---------- MLA ----------
Castro, A.F., Amorena, C., Müller, A., Ottaviano, G., Tellez-Iñon, M.T., Taquini, A.C.
"Extracellular ATP and bradykinin increase cGMP in vascular endothelial cells via activation of PKC"
. American Journal of Physiology - Cell Physiology, vol. 275, no. 1 44-1, 1998, pp. C113-C119.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636143_v275_n144-1_pC113_Castro [ ]
---------- VANCOUVER ----------
Castro, A.F., Amorena, C., Müller, A., Ottaviano, G., Tellez-Iñon, M.T., Taquini, A.C. Extracellular ATP and bradykinin increase cGMP in vascular endothelial cells via activation of PKC. Am. J. Physiol. Cell Physiol. 1998;275(1 44-1):C113-C119.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636143_v275_n144-1_pC113_Castro [ ]