8 research outputs found

    Sistema Renina-Angiotensina y degeneración dopaminérgica: Papel de la activación microglial, el complejo NADPH-oxidasa y canales de potasio mitocondriales dependientes de ATP. Implicaciones en neuroprotección

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    Hemos estudiado la implicación de la angiotensina II cerebral en la progresión de la degeneración dopaminérgica en la enfermedad de Parkinson. Así como la interacción del sistema renina-angiotensina y el receptor gamma activado por peroxisomas, los canales de potasio mitocondriales dependientes de ATP y el enzima Rho-quinasa

    Renin angiotensin system and gender differences in dopaminergic degeneration

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    Background: There are sex differences in dopaminergic degeneration. Men are approximately two times as likely as premenopausal women of the same age to develop Parkinson’s disease (PD). It has been shown that the local renin angiotensin system (RAS) plays a prominent role in sex differences in the development of chronic renal and cardiovascular diseases, and there is a local RAS in the substantia nigra and dopaminergic cell loss is enhanced by angiotensin via type 1 (AT1) receptors. Results: In the present study, we observed that intrastriatal injection of 6-hydroxydopamine induced a marked loss of dopaminergic neurons in the substantia nigra of male rats, which was significantly higher than the loss induced in ovariectomized female rats given estrogen implants (i.e. rats with estrogen). However, the loss of dopaminergic neurons was significantly lower in male rats treated with the AT1 antagonist candesartan, and similar to that observed in female rats with estrogen. The involvement of the RAS in gender differences in dopaminergic degeneration was confirmed with AT1a-null mice lesioned with the dopaminergic neurotoxin MPTP. Significantly higher expression of AT1 receptors, angiotensin converting enzyme activity, and NADPH-oxidase complex activity, and much lower levels of AT2 receptors were observed in male rats than in female rats with estrogen. Conclusions: The results suggest that brain RAS plays a major role in the increased risk of developing PD in men, and that manipulation of brain RAS may be an efficient approach for neuroprotective treatment of PD in men, without the feminizing effects of estrogen.Funding: Spanish Ministry of Science and Innovation, Spanish Ministry of Health (RD06/0010/0013 and CIBERNED), Galician Government (XUGA) and FEDERS

    Development of specialized mathematical knowledge to teach. A proposal to enrich the initial formation of teachers of Infant and Primary Education by integrating a zero course

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    El objetivo principal de este proyecto es implantar la segunda edición del Curso Cero en Matemáticas y la reflexión de las asignaturas impartidas por la Unidad Docente de Didáctica de las Matemáticas en los Grados de Maestro desde el conocimiento especializado del profesor de Matemáticas.The main objective of this project is to implement the second edition of the Zero Course in Mathematics and the reflection of the subjects were taught by Unit of Mathematics Didactics in the teachers training Degrees from the specialized knowledge of the teacher of Maths.Depto. de Didáctica de las Ciencias Experimentales , Sociales y MatemáticasFac. de EducaciónFALSEVICERRECTORADO DE CALIDAD UCMsubmitte

    Design of good practices for the mathematical training of Kindergarten Education teachers and Primary Education teachers: Zero course in mathematics and mathematics teaching subjects.

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    El objetivo de este proyecto es la coordinación de las asignaturas impartidas por los profesores de la Unidad Docente de Didáctica de las Matemáticas, actualizando contenidos y prácticas de la formación de la enseñanza-aprendizaje de las matemáticas en los grados de Maestro en Educación Infantil y Primaria.The objective of this project is the coordination of the subjects that are taught by the teachers of the Unit of Didactic of Mathematics, updating contents and practices of the teaching-learning of mathematics in Kindergarten Education Teacher Degree and Primary Education Teacher DegreeDepto. de Didáctica de las Ciencias Experimentales , Sociales y MatemáticasFac. de EducaciónFALSEsubmitte
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