Browsing by Author "Del Río, Rodrigo "

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    Autonomic nervous system dysfunction throughout menopausal transition: A potential mechanism underpinning cardiovascular and cognitive alterations during female ageing
    (John Wiley and Sons Inc, 2023) Schwarz, Karla G.; Vicencio, Sinay C.; Inestrosa, Nibaldo C.; Villaseca P.; Del Río, Rodrigo
    © 2023 The Authors. The Journal of Physiology © 2023 The Physiological Society.Cardiovascular diseases (CVD) and neurodegenerative disorders, such as Alzheimer's disease (AD), are highly prevalent conditions in middle-aged women that severely impair quality of life. Recent evidence suggests the existence of an intimate cross-talk between the heart and the brain, resulting from a complex network of neurohumoral circuits. From a pathophysiological perspective, the higher prevalence of AD in women may be explained, at least in part, by sex-related differences in the incidence/prevalence of CVD. Notably, the autonomic nervous system, the main heart–brain axis physiological orchestrator, has been suggested to play a role in the incidence of adverse cardiovascular events in middle-aged women because of decreases in oestrogen-related signalling during transition into menopause. Despite its overt relevance for public health, this hypothesis has not been thoroughly tested. Accordingly, in this review, we aim to provide up to date evidence supporting how changes in circulating oestrogen levels during transition to menopause may trigger autonomic dysfunction, thus promoting cardiovascular and cognitive decline in women. A main focus on the effects of oestrogen-mediated signalling at CNS structures related to autonomic regulation is provided, particularly on the role of oestrogens in sympathoexcitation. Improving the understanding of the contribution of the autonomic nervous system on the development, maintenance and/or progression of both cardiovascular and cognitive dysfunction during the transition to menopause should help improve the clinical management of elderly women, with the outcome being an improved life quality during the natural ageing process. (Figure presented.).
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    Effect of ultrasound irradiation in nucleation and growth mechanisms of poly-o-anisidine and polyaniline
    (2013) Valle de la Cortina, María Angélica del; Romero, Mario Alberto; Díaz Alzamora, Fernando Raúl; Armijo Mancilla, Juan Francisco; Del Río, Rodrigo; Núñez, Ismael; Dalchiele, E. A.
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    July ECI biocommentary
    (2019) Del Río, Rodrigo
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    Performance of Quercus rubra and Quercus robur in pure and mixed-species plantations
    (2025) Loewe Munoz, Veronica Francisca; Del Río, Rodrigo ; Delard, Claudia; Bonomelli de Pinaga, Claudia María; Balzarini, Monica
    Context: Quercus robur L. and Q. rubra L. (pedunculate and Northern red oak, respectively) produce high-value timber. Mixed plantations are attracting attention because they provide several benefits; however, they have been included in few trials in non-native habitats.Aims: This study assessed growth, health, and timber quality of Quercur robur and Q. rubra trees growing in pure and mixed plantations including companion tree species.Methods: Growth was measured periodically in Q. robur and Q. rubra pure and mixed plantations established in southern Chile for 23 years. Mixed plantations consisted of a main forest species association (Castanea sativa Mill., Quercus rubra, Q. robur and Prunus avium L.) and three mixed plantations including the four main forest species plus one companion tree species (Alnus glutinosa L., Gevuina avellana Mol. or Embothrium coccineum J.R. Forst. & G.Forst.). Timber quality variables and health status were measured at age 23. Growth variables were analyzed using linear mixed models and quality timber variables, using a χ2 test.Results: Both species exhibited a positive performance in tree growth, vigor, and phytosanitary status. Across treatments, Q. rubra presented bigger trees than Q. robur at age 23. In the pure plantation, Q. robur initially showed higher growth rates than Q. rubra, but from age 15, the latter outperformed the former. Q. robur tree volume was higher in the main species association and the one including E. coccineum than in the pure plantation. Q. rubra tree size showed no differences between plantation types. The association with A. glutinosa reduced both oak species growth, and the one with Gevuina avellana had a neutral effect on Q. rubra and a negative effect on Q. robur (reduced height and volume). Finally, the main species association showed highervolume per hectare than the pure Q. robur plantation.Conclusion: Both species showed productive potential in pure and mixed plantations. Mixed plantations can be recommended as an alternative to pure plantations to produce quality timber. Adequately selecting the main and companion species based on site-specific conditions is crucial for the success of productive plantations.
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    Preparation and characterization of ZrO2:Sm amorphous thin films by solid state photochemical deposition method
    (2010) Cabello, Gerardo; Lillo, Luis; Caro, Claudia A.; Chornik, Boris; Soto Arriaza, Marco; Del Río, Rodrigo; Tejos M.
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    Revisiting the physiological effects of exercise training on autonomic regulation and chemoreflex control in heart failure : does ejection fraction matter?
    (2018) Andrade Andrade, David Cristóbal; Arce Alvarez, Alexis; Toledo, Camilo; Díaz, Hugo S.; Lucero, Claudia; Quintanilla, Rodrigo A.; Schultz, Harold D.; Marcus, Noah J.; Amann, Markus; Del Río, Rodrigo
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    Synaptic Functions of Hemichannels and Pannexons: A Double-Edged Sword
    (2018) Abudara, V.; Retamal, M. A.; Del Río, Rodrigo; Orellana Roca, Juan Andrés