7 research outputs found
Design and synthesis of the first NO- and haem-independent sGC activator BAY 58–2667 for the treatment of acute decompensated heart failure
Design and synthesis of the first NO- and haem-independent sGC activator BAY 58–2667 for the treatment of acute decompensated heart failure
NO-independent regulatory site of direct sGC stimulators like YC-1 and BAY 41-2272
BACKGROUND: The most important receptor for nitic oxide is the soluble guanylate cyclase (sGC), a heme containing heterodimer. Recently, a pyrazolopyridine derivative BAY 41-2272, structurally related to YC-1, was identified stimulating soluble guanylate cyclase in an NO-independent manner, which results in vasodilatation and antiplatelet activity. The study described here addresses the identification of the NO-independent site on soluble guanylate cyclase. RESULTS: We developed a photoaffinity label ((3)H-meta-PAL) for the direct and NO-independent soluble guanylate cyclase (sGC) stimulator BAY 41-2272 by introducing an azido-group into the tritium labeled compound. The synthesized photoaffinitylabel directly stimulates the purified sGC and shows in combination with NO a synergistic effect on sGC activity. Irradiation with UV light of (3)H-meta-PAL together with the highly purified sGC leads to a covalent binding to the α(1)-subunit of the enzyme. This binding is blocked by unlabeled meta-PAL, YC-1 and BAY 41-2272. For further identification of the NO-independent regulatory site the (3)H-meta-PAL labeled sGC was fragmented by CNBr digest. The (3)H-meta-PAL binds to a CNBr fragment, consisting of the amino acids 236–290 of the α(1)-subunit. Determination of radioactivity of the single PTH-cycles from the sequencing of this CNBr fragment detected the cysteines 238 and 243 as binding residues of the (3)H-meta-PAL. CONCLUSIONS: Our data demonstrate that the region surrounding the cysteines 238 and 243 in the α(1)-subunit of the sGC could play an important role in regulation of sGC activity and could be the target of this new type of sGC stimulators
Discovery of riociguat (BAY 63-2521): a potent, oral stimulator of soluble guanylate cyclase for the treatment of pulmonary hypertension
Alcance y limitaciones de la justicia internacional
El presente libro hace parte de los trabajos del grupo de justicia internacional de la Red Multidisciplinar de Investigación “Perspectiva Epistemológica Ibero-Americana sobre la Justicia” Volumen 4, coordinada desde el Instituto Ibero-Americano de la Haya para la Paz, los Derechos Humanos y la Justicia Internacional. Así mismo, se inscribe dentro de los siguientes proyectos de investigación: (i) “Principios de armonización entre la función y alcance de la Justicia Internacional y las demandas surgidas en los procesos políticos de transición”, financiado por el Fondo de Investigación de la Universidad del Rosario, Bogotá, Colombia —FIUR—; y (ii) “La función de los órganos judiciales y arbitrales internacionales en la ejecución de un eventual acuerdo de paz en Colombia fruto de la renegociación resultante del Referéndum del 2 de octubre de 2016”, financiado por la Facultad de Jurisprudencia de la Universidad del Rosario. Ambos proyectos se encuentran adscritos a la línea de investigación “Crítica al Derecho Internacional desde Fundamentos Filosóficos”, del Grupo de Investigación de Derecho Internacional de la Facultad de Jurisprudencia de la Universidad del Rosario, Bogotá, Colombia