Person:
Climent Flórez, Belén

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First Name
Belén
Last Name
Climent Flórez
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Farmacia
Department
Fisiología
Area
Fisiología
Identifiers
UCM identifierORCIDScopus Author IDDialnet ID

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Now showing 1 - 7 of 7
  • Publication
    Impacto de la implementación del aprendizaje basado en problemas en combinación con las prácticas de laboratorio clínico y virtual de Fisiopatología para el desarrollo de competencias profesionales
    (2020-07-01) López-Oliva Muñoz, María Elvira; García Sacristán, Albino; Rivera de los Arcos, Luis; Prieto Ocejo, Dolores; Benedito Castellote, Sara; Hernández Rodríguez, Medardo Vicente; Recio Visedo, María Paz; Climent Flórez, Belén; Agis Torres, Ángel; Raposo González, Rafaela; Contreras Jimenez, Cristina; Sánchez Pina, Ana Alejandra; Hernándes Martín, Marina; Rodríguez Prado, Claudia; Muñoz Picos, Mercedes; Perales Calvo, Manuel; Puente Maya, Francisco Jesús; Bragado Aguado, María del Carmen
  • Publication
    Autoevaluación, Coevaluación y el uso de las TIC como enfoque innovador en las prácticas de Fisiopatología y su efecto en el proceso de enseñanza-aprendizaje del alumno
    (2023-07-31) Leite Fernandes, Vitor Samuel; Agis Torres, Ángel; Benedito Castellote, Sara; Climent Flórez, Belén; Contreras Jiménez, Cristina; García Sacristán, Albino; Gómez del Val, Alfonso; Hernández Rodríguez, Medardo Vicente; Hernández Martín, Marina; López-Oliva Muñoz, María Elvira; Merino Martín, José Joaquín; Montenegro Álvarez De Tejera, María Pilar; Muñoz Picos, Mercedes; Navarro Dorado, Jorge; Pascual Gómez, Natalia Fernanda; Perales Calvo, Manuel; Prieto Ocejo, Dolores; Puente Maya, Francisco Jesus; Raposo González, Rafaela; Recio Visedo, María Paz; Rivera De Los Arcos, Luis; Sánchez Pina, Ana Alejandra
    En las últimas décadas, la educación universitaria ha evolucionado hacia un enfoque constructivista en consonancia con las recomendaciones del Espacio Europeo de Educación Superior (EEES). En este paradigma, los estudiantes asumen un papel activo en el proceso de enseñanza-aprendizaje, mientras los profesores actúan como facilitadores. Las metodologías constructivistas fomentan el desarrollo tanto individual como grupal de competencias específicas y genéricas, al tiempo que permiten la inclusión de agentes de evaluación formativa para estimular la crítica y la autocrítica del alumno en su desempeño. En este contexto, surge la necesidad de aplicar el constructivismo a la evaluación, involucrando al estudiante en su propio proceso de evaluación. La autoevaluación y la coevaluación emergen como alternativas concretas para lograrlo. La autoevaluación implica que el estudiante analice y valore de manera sistemática su trabajo durante el proceso de aprendizaje para mejorar resultados y fomentar la autocrítica. Por otro lado, la coevaluación es una evaluación entre compañeros que permite valorar la implicación y actitud de los miembros del grupo, estimulando el aprendizaje colectivo. Las Tecnologías de la Información y Comunicación (TIC) juegan un papel importante en la educación y en la evaluación de los alumnos, diferenciándose de las prácticas tradicionales. La implementación de TIC no solo desarrolla habilidades en el proceso enseñanza-aprendizaje, sino también favorece la autoevaluación y la coevaluación. Con base en este enfoque, se presenta un proyecto de innovación docente en la asignatura de Fisiopatología para estudiantes de Farmacia. Los alumnos crearán videos sobre temas específicos de la práctica y se evaluarán a sí mismos y a sus compañeros utilizando la herramienta App Plickers. Sin embargo, aún no existe una metodología claramente definida para la implementación de estrategias constructivistas y uso de TIC en Fisiopatología, destacando la importancia y relevancia de este proyecto.
  • Publication
    The bitter taste receptor (TAS2R) agonist denatonium promotes a strong relaxation of rat corpus cavernosum
    (Elsevier, 2023-09) Navarro Dorado, Jorge; Climent Flórez, Belén; López-Oliva Muñoz, María Elvira; Martínez Sainz, María Del Pilar; Hernández Martín, Marina; Agis Torres, Ángel; Recio Visedo, María Paz; Barahona Gomáriz, María Victoria; Benedito Castellote, Sara; Leite Fernandes, Vitor Samuel; Hernández Rodríguez, Medardo Vicente
    Bitter taste receptors (TAS2R) are found in numerous extra-oral tissues, including smooth muscle (SM) cells in both vascular and visceral tissues. Upon activation, TAS2R stimulate the relaxation of the SM. Nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) signaling pathway is involved in penile erection, and type 5 phosphodiesterase (PDE5) inhibitors, a cGMP-specific hydrolase are used as first-line treatments for erectile dysfunction (ED). Nevertheless, PDE5 inhibitors are ineffective in a considerable number of patients, prompting research into alternative pharmacological targets for ED. Since TAS2R agonists regulate SM contractility, this study investigates the role of TAS2Rs in rat corpus cavernosum (CC). We performed immunohistochemistry to detect TAS2R10, isometric force recordings for TAS2R agonists denatonium and chloroquine, the slow-release H2S donor GYY 4137, the NO donor SNAP, the β-adrenoceptor agonist isoproterenol and electrical field stimulation (EFS), as well as measurement of endogenous hydrogen sulfide (H2S) production. The immunofluorescence staining indicated that TAS2R10 was broadly expressed in the CC SM and to some extent in the nerve fibers. Denatonium, chloroquine, SNAP, and isoproterenol cause potent dose-dependent SM relaxations. H2S production was decreased by NO and H2S synthase inhibitors, while it was enhanced by denatonium. In addition, denatonium increased the relaxations induced by GYY 4137 and SNAP but failed to modify EFS- and isoproterenol-induced responses. These results suggest neuronal and SM TAS2R10 expression in the rat CC, where denatonium induces a strong SM relaxation per se and promotes the H2S- and NO-mediated inhibitory gaseous neurotransmission. Thus, TAS2R10 might represent a valuable therapeutic target in ED.
  • Publication
    Adaptación a un entorno semipresencial de una nueva herramienta mixta del aprendizaje basado en problemas en combinación con las prácticas de laboratorio clínico a la nueva asignatura Bases Anatómicas y Fisiología del Cuerpo Humano
    (2021-06) Muñoz Picos, Mercedes; Agis Torres, Ángel; Benedito Castellote, Sara; Bragado Aguado, María del Carmen; Climent Flórez, Belén; Contreras Jiménez, Cristina; García Sacristán, Albino; Gómez Del Val, Alfonso; Gutiérrez Cruz, Alejandro; Hernández Rodríguez, Medardo Vicente; Leite Fernandes, Vitor Samuel; López-Oliva Muñoz, María Elvira; Montenegro Álvarez De Tejera, María Pilar; Navarro Dorado, Jorge; Perales Calvo, Manuel; Puente Maya, Francisco Jesús; Raposo González, Rafaela; Recio Visedo, María Paz; Rivera de los Arcos, Luis; Rodríguez Prados, Claudia; Sánchez Pina, Ana Alejandra
  • Publication
    Hydrogen peroxide activates store-operated Ca2+ entry in coronary arteries.
    (WILEY, 2015-10-24) Santiago Prieto, María Elvira; Climent Flórez, Belén; Muñoz Picos, Mercedes; García Sacristán, Albino; Rivera De Los Arcos, Luis; Prieto Ocejo, Dolores
    BACKGROUND AND PURPOSE Abnormal Ca2+ metabolism has been involved in the pathogenesis of vascular dysfunction associated with oxidative stress. Here, we have investigated the actions of H2O2 on store-operated Ca2+ (SOC) entry in coronary arteries and assessed whether it is impaired in arteries from a rat model of metabolic syndrome. EXPERIMENTAL APPROACH Simultaneous measurements of intracellular Ca2+ concentration and contractile responses were made in coronary arteries from Wistar and obese Zucker rats, mounted in microvascular myographs, and the effects of H2O2 were assessed. KEY RESULTS H2O2 raised intracellular Ca2+ concentrations, accompanied by simultaneous vasoconstriction that was markedly reduced in a Ca2+-free medium. Upon Ca2+ re-addition, a nifedipine-resistant sustained Ca2+ entry, not coupled to contraction, was obtained in endothelium-denuded coronary arteries. The effect of H2O2 on this voltage-independent Ca2+ influx was concentration dependent, and high micromolar H2O2 concentrations were inhibitory and reduced SOC entry evoked by inhibition of the sarcoplasmic reticulum ATPase (SERCA). H2O2-induced increases in Fura signals were mimicked by Ba2+ and reduced by heparin, Gd3+ ions and by Pyr6, a selective inhibitor of the Orai1-mediated Ca2+ entry. In coronary arteries from obese Zucker rats, intracellular Ca2+ mobilization and SOC entry activated by acute exposure to H2O2 were augmented and associated with local oxidative stress. CONCLUSION AND IMPLICATIONS H2O2 exerted dual concentration-dependent stimulatory/inhibitory effects on store-operated, IP3 receptor-mediated and Orai1-mediated Ca2+ entry, not coupled to vasoconstriction in coronary vascular smooth muscle. SOC entry activated by H2O2 was enhanced and associated with vascular oxidative stress in coronary arteries in metabolic syndrome.
  • Publication
    Mechanisms involved in the adenosine-induced vasorelaxation to the pig prostatic small arteries
    (Springer Link, 2011-05-13) Fernandes Ribeiro, Ana Sofía; Fernandes, Vítor S.; Orensanz Muñoz, Luis Miguel; Martínez Sainz, María Del Pilar; Recio Visedo, María Paz; Martínez Sáenz, Ana; Climent Flórez, Belén; Arteaga, Jose Luis; García Sacristán, Albino; Prieto Ocejo, Dolores; Hernández Rodríguez, Medardo Vicente
    Benign prostatic hypertrophy has been related with glandular ischemia processes and adenosine is a potent vasodilator agent. This study investigates the mechanisms underlying the adenosine-induced vasorelaxation in pig prostatic small arteries. Adenosine receptors expression was determined by Western blot and immunohistochemistry, and rings were mounted in myographs for isometric force recording. A(2A) and A(3) receptor expression was observed in the arterial wall and A(2A)-immunoreactivity was identified in the adventitia-media junction and endothelium. A(1) and A(2B) receptor expression was not obtained. On noradrenaline-precontracted rings, P1 receptor agonists produced concentration-dependent relaxations with the following order of potency: 5'-N-ethylcarboxamidoadenosine (NECA) = CGS21680 > 2-Cl-IB-MECA = 2-Cl-cyclopentyladenosine = adenosine. Adenosine reuptake inhibition potentiated both NECA and adenosine relaxations. Endothelium removal and ZM241385, an A(2A) antagonist, reduced NECA relaxations that were not modified by A(1), A(2B), and A(3) receptor antagonists. Neuronal voltage-gated Ca(2+) channels and nitric oxide (NO) synthase blockade, and adenylyl cyclase activation enhanced these responses, which were reduced by protein kinase A inhibition and by blockade of the intermediate (IK(Ca))- and small (SK(Ca))-conductance Ca(2+)-activated K(+) channels. Inhibition of cyclooxygenase (COX), large-conductance Ca(2+)-activated-, ATP-dependent-, and voltage-gated-K(+) channel failed to modify these responses. These results suggest that adenosine induces endothelium-dependent relaxations in the pig prostatic arteries via A(2A) purinoceptors. The adenosine vasorelaxation, which is prejunctionally modulated, is produced via NO- and COX-independent mechanisms that involve activation of IK(Ca) and SK(Ca) channels and stimulation of adenylyl cyclase. Endothelium-derived NO playing a regulatory role under conditions in which EDHF is non-functional is also suggested. Adenosine-induced vasodilatation could be useful to prevent prostatic ischemia.
  • Publication
    In vitro inhibition of phosphodiesterase type 4 enhances rat corpus cavernosum nerve-mediated relaxation induced by gasotransmitters
    (Elsevier, 2022-02-25) Fernandes, Vítor Samuel Leite; López-Oliva Muñoz, María Elvira; Martinez Sainz, María del Pilar; Agis Torres, Ángel; Recio Visedo, María Paz; Navarro Dorado, Jorge; Barahona Gomáriz, María Victoria; Benedito Castellote, Sara; Prieto Ocejo, Dolores; Climent Flórez, Belén; Hernández Rodríguez, Medardo Vicente
    Aims: Nitric oxide (NO) and hydrogen sulfide (H2S) are involved in nerve-mediated corpus cavernosum (CC) relaxation. Expression of phosphodiesterase type 5 (PDE5) and type 4 (PDE4), cyclic guanosine monophosphate (cGMP)- and cyclic adenosine monophosphate (cAMP)-specific, respectively, has been described and PDE5- and PDE4-inhibitors induce cavernous smooth muscle relaxation. Whereas the NO/cGMP signaling pathway is well established in penile erection, the cAMP-mediated mechanism is not fully elucidated. The aim of this study is to investigate the localization and the functional significance of PDE4 in rat CC tone regulation. Main methods: We performed immunohistochemistry for the detection of the PDE4A isoenzyme. Isometric tension recordings for roflumilast and tadalafil, PDE4 and PDE5 inhibitors, respectively, electrical field stimulation (EFS) and β-adrenoceptor agonist isoproterenol and endogenous H2S production measurement. Key findings: A marked PDE4A expression was detected mainly localized in the nerve cells of the cavernous smooth muscle. Furthermore, roflumilast and tadalafil exhibited strong corpus cavernous relaxations. Endoge-nous H2S production was decreased by NO and H2S synthase inhibitors and increased by roflumilast. Isopro-terenol- and EFS-induced relaxations were increased by roflumilast. Significance: These results indicate that PDE4A is mainly expressed within the nerves cells of the rat CC, where roflumilast induces a potent corpus cavernous relaxation per se and potentiates the response induced by β-adrenoceptor activation. The fact that roflumilast enhances H2S production, as well as EFS-elicited responses suggests that PDE4 inhibitors modulate, in a positive feedback fashion, nerve-mediated relaxation induced by gasotransmitters, thus indicating a key role for neuronal PDE4 in penile erection.