Publications by authors named "A B Portela"

Human papillomavirus (HPV) infections rank as the most prevalent sexually transmitted infections globally. The Brazilian Ministry of Health recommends the topical use of 70%-90% trichloroacetic acid (TAA) for treating condyloma acuminata, yet this method suffers from a high recurrence rate of 36% and requires roughly six applications. Topical photodynamic therapy (PDT) has shown effectiveness in targeting subclinical lesions, but it also necessitates multiple sessions for complete lesion clearance.

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The use of a video method based on the Digital Image Correlation (DIC) algorithm from experimental mechanics to estimate the displacements, strain field, and sarcolemma length in a beating single-cell cardiomyocyte is proposed in this work. The obtained deformation is then correlated with the calcium signal, from calcium imaging where fluorescent dyes sensitive to calcium Ca are used. Our proposed video-based method for simultaneous contraction and intracellular calcium analysis results in a low-cost, non-invasive, and label-free method.

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Article Synopsis
  • Biological soil covers (BSCs) are essential for ecosystem health, improving soil stability, nutrient cycling, and hydrology, while supporting plant development.
  • The eBryoSoil app enabled citizen scientists to map BSC communities in the Iberian Peninsula between November 2019 and January 2021, gathering key data despite challenges from the COVID-19 pandemic.
  • The findings underline the need for conservation efforts focused on diverse habitats to protect lichen and bryophyte communities, and highlight the potential of citizen science in studying vulnerable ecosystems and organisms.
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Background: Transcatheter aortic valve implantation (TAVI) is a well-established treatment for symptomatic patients with aortic stenosis. Yet, the impact of sex differences and public vs. private procedural setting on TAVI outcomes remain uncertain.

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