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  1. Article ; Online: Fluctuating selection and rapid evolution of oaks during recent climatic transitions

    Thomas Caignard / Laura Truffaut / Sylvain Delzon / Benjamin Dencausse / Laura Lecacheux / José M. Torres‐Ruiz / Antoine Kremer

    Plants, People, Planet, Vol 6, Iss 1, Pp 221-

    2024  Volume 237

    Abstract: Societal Impact Statement The rapidity of evolutionary changes in trees and whether this pace is sufficient to cope with ongoing climatic change are hotly debated issues in ecology today. Climate warming began in the mid‐19th century, after the Little ... ...

    Abstract Societal Impact Statement The rapidity of evolutionary changes in trees and whether this pace is sufficient to cope with ongoing climatic change are hotly debated issues in ecology today. Climate warming began in the mid‐19th century, after the Little Ice Age (LIA). Monitoring temporal genetic changes during this climatic transition in multicentennial oak populations revealed evidence of fluctuating selection and rapid evolution. These findings suggest that rapid evolution is probably also currently underway. They may lead to management options for operational forestry aiming to stimulate evolutionary mechanisms during the renewal of oak stands and to decrease potential temporal gene flow. Summary Retrospective studies of the evolutionary responses of tree populations to past documented climate change can provide insight into the adaptive responses of these organisms to ongoing environmental changes. We used a retrospective approach to monitor genetic changes over time in multicentennial sessile oak (Quercus petraea L.) forests. We compared the offspring of three age‐structured cohorts (340, 170, and 60 years old, dating from about 1680, 1850, and 1960) spanning the late Little Ice Age and early Anthropocene. The experiment was repeated in three different forests in western France. The offspring were raised in a common garden experiment, with 30 to 53 open‐pollinated families per cohort. We assessed 16 phenotypic traits in the common garden and observed significant shifts between cohorts for growth and phenology‐related traits. These shifts were correlated with differences in the prevailing temperatures in the past and could be interpreted as temporal genetic changes. However, there was no temporal trend for genetic variation. The genetic changes between the cold (late Little Ice Age) and warm (early Anthropocene) periods were mostly opposite for growth and phenology‐related traits. These findings highlight fluctuations of selection and a rapid evolutionary response of tree populations to climatic transitions in ...
    Keywords Anthropocene ; evolution ; growth ; Little Ice Age ; phenology ; Quercus ; Environmental sciences ; GE1-350 ; Botany ; QK1-989
    Subject code 550
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: El desafío de integrar Iberoamérica a través de la investigación y las publicaciones científicas

    Oscar A. Mendiz / José M. Torres Viera

    REC: Interventional Cardiology, Vol 2, Iss 1, Pp 6-

    2020  Volume 7

    Abstract: Llevar adelante el proyecto de REC: Interventional Cardiology, una revista dedicada al intervencionismo cardiovascular publicada en español e inglés, en principio puede impresionar como una tarea titánica de implementar y por ello es necesario felicitar ... ...

    Abstract Llevar adelante el proyecto de REC: Interventional Cardiology, una revista dedicada al intervencionismo cardiovascular publicada en español e inglés, en principio puede impresionar como una tarea titánica de implementar y por ello es necesario felicitar a los editores por el emprendimiento y a Revista Española de Cardiología por hacer el espacio para este nuevo proyecto, que aparece como una oportunidad única de vínculo, acuerdos y trabajo en equipo para toda la cardiología de habla hispana, que tiende a sentirse disminuida frente a la imponente presencia de las comunicaciones científicas anglosajonas.
    Keywords Internal medicine ; RC31-1245
    Language English
    Publishing date 2020-02-01T00:00:00Z
    Publisher Permanyer
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: The challenge of integrating Ibero-America through research and scientific publications

    Oscar A. Mendiz / José M. Torres Viera

    REC: Interventional Cardiology (English Ed.), Vol 2, Iss 1, Pp 6-

    2020  Volume 7

    Abstract: Undertaking the project REC: Interventional Cardiology, a bilingual journal published in English and Spanish and devoted to interventional cardiology seems a gigantic task to implement, which is why we wish to thank the editors for their entrepreneurial ... ...

    Abstract Undertaking the project REC: Interventional Cardiology, a bilingual journal published in English and Spanish and devoted to interventional cardiology seems a gigantic task to implement, which is why we wish to thank the editors for their entrepreneurial spirit and also Revista Española de Cardiología for making space for this new project. A unique opportunity for developing agreements and team work for the entire Spanish-speaking cardiological community that often feels the imposing presence of English-speaking scientific journals.
    Keywords Medicine ; R
    Language English
    Publishing date 2020-02-01T00:00:00Z
    Publisher Permanyer
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Dependence of Heart Rate Variability Indices on the Mean Heart Rate in Women with Well-Controlled Type 2 Diabetes

    Adriana Robles-Cabrera / José M. Torres-Arellano / Ruben Fossion / Claudia Lerma

    Journal of Clinical Medicine, Vol 10, Iss 4386, p

    2021  Volume 4386

    Abstract: Heart rate variability (HRV) is a method used to evaluate the presence of cardiac autonomic neuropathy (CAN) because it is usually attributed to oscillations in cardiac autonomic nerve activity. Recent studies in other pathologies suggest that HRV ... ...

    Abstract Heart rate variability (HRV) is a method used to evaluate the presence of cardiac autonomic neuropathy (CAN) because it is usually attributed to oscillations in cardiac autonomic nerve activity. Recent studies in other pathologies suggest that HRV indices are strongly related to mean heart rate, and this does not depend on autonomic activity only. This study aimed to evaluate the correlation between the mean heart rate and the HRV indices in women patients with well-controlled T2DM and a control group. HRV was evaluated in 19 T2DM women and 44 healthy women during basal supine position and two maneuvers: active standing and rhythmic breathing. Time-domain (SDNN, RMSSD, pNN20) and frequency-domain (LF, HF, LF/HF) indices were obtained. Our results show that meanNN, age, and the maneuvers are the main predictors of most HRV indices, while the diabetic condition was a predictor only for pNN20. Given the known reduced HRV in patients with T2DM, it is clinically important that much of the HRV indices are dependent on heart rate irrespective of the presence of T2DM. Moreover, the multiple regression analyses evidenced the multifactorial etiology of HRV.
    Keywords type 2 diabetes mellitus ; women ; heart rate variability ; mean heart rate ; orthostatic challenge ; rhythmic breathing ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Association of the Heart Rate Variability Response to Active Standing with the Severity of Calcific Aortic Valve Disease

    Jimena Rodríguez-Carbó / José M. Torres-Arellano / Nydia Ávila-Vanzzini / Rashidi Springall / Rafael Bojalil / Oscar Infante / Claudia Lerma / Juan Carlos Echeverría

    Journal of Clinical Medicine, Vol 11, Iss 16, p

    Novel Insights of a Neurocardiovascular Pathology

    2022  Volume 4771

    Abstract: The aim of this work was to obtain insights of the participation of the autonomic nervous system in different stages of calcific aortic valve disease (CAVD) by heart rate variability (HRV) analysis. Studying subjects with no valve impairments and CAVD ... ...

    Abstract The aim of this work was to obtain insights of the participation of the autonomic nervous system in different stages of calcific aortic valve disease (CAVD) by heart rate variability (HRV) analysis. Studying subjects with no valve impairments and CAVD patients, we also sought to quantify the independent contribution or explanatory capacity of the aortic valve echocardiographic parameters involved in the HRV changes caused by active standing using hierarchical partitioning models to consider other variables or potential confounders. We detected smaller adjustments of the cardiac autonomic response at active standing caused specifically by the aortic valve deterioration. The highest association (i.e., the highest percentage of independent exploratory capacity) was found between the aortic valve area and the active standing changes in the short-term HRV scaling exponent α 1 (4.591%). The valve’s maximum pressure gradient echocardiographic parameter was present in most models assessed (in six out of eight models of HRV indices that included a valve parameter as an independent variable). Overall, our study provides insights with a wider perspective to explore and consider CAVD as a neurocardiovascular pathology. This pathology involves autonomic-driven compensatory mechanisms that seem generated by the aortic valve deterioration.
    Keywords calcific aortic valve disease ; heart rate variability ; hierarchical partitioning ; autonomic nervous system ; active standing ; Medicine ; R
    Subject code 621
    Language English
    Publishing date 2022-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: PROCEDURE FOR INSTALLING A PHOTOVOLTAIC SYSTEM ON ROOFS IN CUBAN RON CORPORATION S.A

    Mayra Guzmán Villavicencio / Carlos R. Soto Castellón / Inoel Águila Bernal / José M. Torres Águila

    Centro Azúcar, Vol 44, Iss 1, Pp 70-

    2017  Volume 81

    Abstract: In this work, a methodological procedure developed from experiences gained during the project "Photovoltaic installation on the roofs of the Central Rum Factory for operation in self consumption and public MT grid connection” is presented, which was held ...

    Abstract In this work, a methodological procedure developed from experiences gained during the project "Photovoltaic installation on the roofs of the Central Rum Factory for operation in self consumption and public MT grid connection” is presented, which was held along with UGAO-AINAIR signature. It is developed taking into account the need to further consolidate the dominance of this alternative energy technology, which is the first experience in such facilities for both, the rum industry and process industries in Cuba. There are no technical rules that regulate requirements to be considered during the conceptual stage of projects for the introduction of photovoltaic systems connected to the grid. The methodological procedure presented provides guidance for its application in other entities, resulting necessary its elaboration to ensure technical stability and reliability of systems during its life.
    Keywords photovoltaic systems ; renewable energy sources ; technology management ; energy saving ; solar energy ; Agriculture (General) ; S1-972 ; Agriculture ; S ; Special industries and trades ; HD9000-9999
    Subject code 690
    Language Spanish
    Publishing date 2017-01-01T00:00:00Z
    Publisher Universidad Central "Marta Abreu" de Las Villas
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Cardiac Autonomic Response to Active Standing in Calcific Aortic Valve Stenosis

    José M. Torres-Arellano / Juan C. Echeverría / Nydia Ávila-Vanzzini / Rashidi Springall / Andrea Toledo / Oscar Infante / Rafael Bojalil / Jorge E. Cossío-Aranda / Erika Fajardo / Claudia Lerma

    Journal of Clinical Medicine, Vol 10, Iss 2004, p

    2021  Volume 2004

    Abstract: Aortic stenosis is a progressive heart valve disorder characterized by calcification of the leaflets. Heart rate variability (HRV) analysis has been proposed for assessing the heart response to autonomic activity, which is documented to be altered in ... ...

    Abstract Aortic stenosis is a progressive heart valve disorder characterized by calcification of the leaflets. Heart rate variability (HRV) analysis has been proposed for assessing the heart response to autonomic activity, which is documented to be altered in different cardiac diseases. The objective of the study was to evaluate changes of HRV in patients with aortic stenosis by an active standing challenge. Twenty-two volunteers without alterations in the aortic valve (NAV) and twenty-five patients diagnosed with moderate and severe calcific aortic valve stenosis (AVS) participated in this cross-sectional study. Ten minute electrocardiograms were performed in a supine position and in active standing positions afterwards, to obtain temporal, spectral, and scaling HRV indices: mean value of all NN intervals (meanNN), low-frequency (LF) and high-frequency (HF) bands spectral power, and the short-term scaling indices (α 1 and α sign1 ). The AVS group showed higher values of LF, LF/HF and α sign1 compared with the NAV group at supine position. These patients also expressed smaller changes in meanNN, LF, HF, LF/HF, α 1, and α sign1 between positions. In conclusion, we confirmed from short-term recordings that patients with moderate and severe calcific AVS have a decreased cardiac parasympathetic supine response and that the dynamic of heart rate fluctuations is modified compared to NAV subjects, but we also evidenced that they manifest reduced autonomic adjustments caused by the active standing challenge.
    Keywords aortic valve disease ; cardiac autonomic modulation ; active standing ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Inflammation and Reduced Parasympathetic Cardiac Modulation in Aortic-Valve Sclerosis

    Juan C. Echeverría / Nydia Ávila-Vanzzini / Rashidi Springall / José M. Torres-Arellano / Andrea Toledo / Oscar Infante / Rafael Bojalil / Jorge Cossío / Erika Fajardo / Claudia Lerma

    Applied Sciences, Vol 9, Iss 19, p

    2019  Volume 4020

    Abstract: Aortic-valve sclerosis increases cardiovascular mortality risk and precedes aortic-valve stenosis, but its mechanisms are not well understood. The purpose of this study was to compare the cardiac autonomic modulation and inflammation markers between ... ...

    Abstract Aortic-valve sclerosis increases cardiovascular mortality risk and precedes aortic-valve stenosis, but its mechanisms are not well understood. The purpose of this study was to compare the cardiac autonomic modulation and inflammation markers between subjects with aortic-valve normal leaflets and subjects with aortic-valve sclerosis. According to 2-D transthoracic echocardiograms, 61 middle-aged volunteers without chronic or acute illnesses were classified in two groups: with no aortic-valve sclerosis (NAVS, N = 16) and with aortic-valve sclerosis (AVS, N = 45). An electrocardiogram at the supine position and active standing was collected to estimate heart rate variability (HRV) indices. A blood sample was obtained to quantify markers of inflammation. Compared to NAVS, AVS subjects showed higher levels of IL-6 (1619 ± 650 vs. 1169 ± 676 pg/mL, p = 0.044) as well as TNFα (370.8 ± 182.0 vs. 247.3 ± 188.2 pg/mL, p = 0.032), and larger low-frequency (LF) to high-frequency (HF) ratio during supine position (Ln(LF/HF) = 0.85 ± 0.85 vs. 0.11 ± 0.69, p = 0.003). Multiple logistic regression analysis showed that AVS was independently associated with LF/HF, TNFα and left ventricle mass index ( p < 0.05). In conclusion, a significant reduction of the parasympathetic-driven cardiac modulation and low-grade inflammation occurs in aortic-valve sclerosis.
    Keywords aortic valve disease ; cardiac autonomic modulation ; heart rate variability ; inflammation ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Subject code 610
    Language English
    Publishing date 2019-09-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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