Publications by authors named "Barrero A"

A species' diet is highly dependent on the availability of food resources in space and time, as well as on intrinsic factors such as sex or age. Accurate assessments of variations in the diet composition of bird populations across spatial scales, seasons and demographic groups are essential not only for understanding the basic ecology of species, but also for the conservation of endangered ones. However, our current knowledge about how birds' diet change according to spatio-temporal variations or intrinsic factors is very limited.

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Introduction And Objectives: Thrombocytopenia frequently occurs after transcatheter aortic valve implantation (TAVI) but its impact is poorly understood. We aimed to analyze the incidence, clinical impact, and predictors of acquired thrombocytopenia after TAVI.

Methods: This retrospective multicenter registry included 3913 patients undergoing TAVI with a baseline platelet count of ≥ 100 *10/L.

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Cyclic acid anhydride is a not very widespread structure in nature, but with a determining role in natural products possessing this functionality in their skeleton. To the best of our knowledge, no revision of terpenes containing cyclic anhydrides has been previously reported. The result was that more than 100 terpenic cyclic anhydrides and related compounds were found to be in need of being reported.

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Introduction: Prolonged and repeated exercise performed during an ultra-endurance event can induce general and cardiac fatigue known as exercise-induced cardiac fatigue. Our objective was to find a possible correlation between the cardiac function and the autonomic cardiac function.

Methods: During a multistage ultra-endurance event, a female well-trained cyclist underwent daily rest echocardiography and heart rate variability measurements to assess the cardiac function and the cardiac autonomic function.

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Article Synopsis
  • * Various reactions led to the development of new structures, including isomerization and rearrangement into longibornane and himachalane derivatives, with the molecular characterization performed using advanced techniques like NMR and mass spectrometry.
  • * The resulting longipinene derivatives displayed moderate to high insecticidal activity against certain insects and showed significant root growth inhibition in certain plants, along with notable ixocidal and nematicidal effects.
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Dispersal of individuals and gene flow are crucial aspects to maintain genetic diversity and viability of populations, especially in the case of threatened species. Landscape composition and structure may facilitate or limit individual movement within and among populations. We used a landscape genetics approach to assess the connectivity patterns of the threatened Dupont's lark ( subsp.

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Competition is a prominent mechanism driving population dynamics and structuring community assemblage, which can be investigated by linking shifts in species' ecological niche and the densities of sympatric species because the ecological release from competitive constraints is a density-dependent process. In this work we determine how a steppe passerine community segregates their ecological niches and evaluate the role of competition in inducing changes in the ecological niche of species. We built multidimensional ecological niches (with Gaussian kernel density estimators) using data on the habitat features used by 10 bird species collected from seven sites in the natural steppes of Central Spain over 2 consecutive years.

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During the pandemic, it has been recommended that vaccination against COVID-19 be a priority for patients with cancer; however, these patients were not included in the initial studies evaluating the available vaccines. To define the impact of vaccination against COVID-19 in preventing the risk of complications associated with the infection in a cohort of patients with cancer in Colombia. An analytical observational cohort study, based on national registry of patients with cancer and COVID 19 infection ACHOC-C19, was done.

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The biomimetic formal synthesis of the antibiotic platensimycin for the treatment of infection by multidrug-resistant bacteria was accomplished starting from either -kaurenoic acid or grandiflorenic acid, each of which is a natural compound available in multigram scale from its natural source. Apart from the natural origin of the selected precursors, the keys of the described approach are the long-distance functionalization of -kaurenoic acid at C11 and the efficient protocol for the A-ring degradation of the diterpene framework.

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To describe the population with early malignant melanoma, we performed a cohort study on the basis of the Epidemiological Registry of Malignant Melanoma in Colombia-Asociacion Colombiana de Hematologia y Oncologia. From January 2011 until December 2021, 759 patients were included; the average age was 66 years, 57% were women, acral lentiginous histology was found in 27.8% of patients, and the median follow-up was 36.

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Purpose: Effects of intense and/or prolonged exercise have been studied extensively in male athletes. Nevertheless, data are scare on the effect of long duration events on cardiac function in female athletes. Our aim was to investigate the effect of a long-lasting moderate-intensity stage cycling event on cardiac function of young female athletes.

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Introduction And Objectives: Transthyretin cardiac amyloidosis (ATTR-CA) patients often have atrial fibrillation and increased bleeding/thrombogenic risks. We aimed to evaluate outcomes of left atrial appendage closure (LAAC) compared with patients without a known diagnosis of CA.

Methods: Comparison at long-term of patients diagnosed with ATTR-CA who underwent LAAC between 2009 and 2020 and those without a known diagnosis of CA.

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Arthropod biomass is a key element in ecosystem functionality and a basic food item for many species. It must be estimated through traditional costly field sampling, normally at just a few sampling points. Arthropod biomass and plant productivity should be narrowly related because a large majority of arthropods are herbivorous, and others depend on these.

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Introduction And Objectives: We aimed to describe the feasibility and preliminary outcomes of commissural alignment (CA) for the balloon-expandable transcatheter heart valve.

Methods: The relationship among native commissures and transcatheter aortic valve implantation neocommissures was analyzed in 10 consecutive patients with tricuspid severe aortic stenosis undergoing transcatheter aortic valve implantation after guided implantation based on computed tomography analysis with a self-developed software. CA was predicted by in silico bio-modelling in the 10 patients and the calculated rotation was applied during crimping.

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Background: High degree cardiac conduction disturbances (HDCD) remain a major complication after transcatheter aortic valve replacement (TAVR), especially with self-expandable valves (SEV). Our aim was to investigate peri-procedural and in-hospital modification of atrioventricular and intracardiac conduction associated to new generation SEV implantation, and the development of new HDCD resulting in permanent pacemaker implantation (PPM) in patients undergoing TAVR.

Methods And Results: Three-hundred forty-four consecutive patients with severe aortic stenosis who underwent TAVR with a new generation SEV [Evolut-R/Pro (n = 130), Acurate-neo (n = 79), Portico (n = 75) and Allegra (n = 60)] were included.

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Article Synopsis
  • Morbidly obese patients are getting two types of heart valve surgeries: TAVR and SAVR, but it's not clear which is better for them.
  • The study compared outcomes of 860 patients who had TAVR and 696 patients who had SAVR, finding that patients who had SAVR faced more complications.
  • Both surgeries had similar in-hospital mortality rates and two-year survival, but the risks and reasons for death were different between the two groups.
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Wind energy has experienced a notable development during the last decades, driving new challenges for animal communities. Although bird collisions with wind turbines and spatial displacement due to disturbance have been widely described in the literature, other potential impacts remain unclear. In this study, we addressed the effect of turbine noise on the vocal behaviour of a threatened shrub-steppe passerine highly dependent on acoustic communication, the Dupont's lark Chersophilus duponti.

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Introduction And Objectives: Transcatheter edge-to-edge repair (TEER) should be considered in patients with heart failure and secondary mitral regurgitation (MR). Angiotensin receptor-neprilysin inhibitors (ARNIs) have been demonstrated to improve prognosis in heart failure. We aimed to evaluate the impact ARNIs on patient selection and outcomes.

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Objectives: The aims of this study were to determine the rate of noncentered coronary ostia and their risk for coronary overlap (CO) and to develop an improved orientation strategy for transcatheter aortic valve replacement (TAVR) devices taking into account anatomical cues to identify patients at risk for CO regardless of commissural alignment and compute an alternative, CO-free TAVR rotation angle for those patients.

Background: Commissural alignment during TAVR reduces CO risk. However, eccentricity of coronary ostia from the center of the sinus of Valsalva may result in CO even after perfect alignment of TAVR commissures.

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Background: Several studies have compared surface electrocardiographic changes following different self-expandable (SE) (Evolut (Medtronic, USA); Acurate (Boston Scientific, USA); Portico (Abbott, USA); and Allegra (NVT, Germany)) and balloon-expandable (BE) Sapien-3 (Edwards Lifesciences, USA) transcatheter heart valves. We aimed to compare these prosthesis with the novel Myval BE prosthesis (Meril Life, India).

Methods: Academic European registry of consecutive patients with severe aortic stenosis who received any of the 6 aforementioned valves.

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Objectives: We aimed to describe hemodynamic performance and clinical outcomes at 30-day follow-up of the balloon-expandable (BE) Myval transcatheter heart valve (THV) in low-risk patients.

Background: The results of the next-generation BE Myval THV in low-risk aortic stenosis (AS) patients are still unknown.

Methods: Retrospective registry performed in nine European centers including patients with low predicted operative mortality risk according to Society of thoracic surgeons (STS) and European system for cardiac operative risk evaluation (EuroSCORE-II) scores.

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Objectives: The balloon-expandable Sapien-3 valve demonstrated superior results in terms of residual aortic regurgitation when compared with self-expandable devices. We aimed to compare for the first-time early outcomes of Sapien-3 transcatheter heart valve (THV) with the balloon-expandable Myval device.

Methods: Consecutive real-world patients from nine European institutions with symptomatic severe aortic stenosis treated either with Sapien-3 or Myval THV devices after June 2018 were compared.

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Introduction: The ACHOCC-19 study was performed to characterize COVID-19 infection in a Colombian oncological population.

Methodology: Analytical cohort study of patients with cancer and COVID-19 infection in Colombia. From April 1 to October 31, 2020.

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