Publications by authors named "Marcela O Vitarelli"

We compared cardiovascular parameters obtained with the Mobil-O-Graph and functional capacity assessed by the Duke Activity Status Index (DASI) before and after Heart Transplantation (HT) and also compared the cardiovascular parameters and the functional capacity of candidates for HT with a control group. Peripheral and central vascular pressures increased after surgery. Similar results were observed in cardiac output and pulse wave velocity.

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Genomic replication is a critical, regulated process that ensures accurate genetic information duplication. In eukaryotic cells, strategies have evolved to prevent conflicts between replication and transcription. Giardia lamblia, a binucleated protozoan, alternates between tetraploid and octaploid genomes during its cell cycle.

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Single-celled eukaryote genomes predominantly replicate through multiple origins. Although origin usage during the S-phase has been elucidated in some of these organisms, few studies have comparatively approached this dynamic. Here, we developed a user-friendly website able to calculate the length of the cell cycle phases for any organism.

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Article Synopsis
  • The coexistence of DNA replication and RNA transcription in trypanosomatids, like Trypanosoma brucei, can create conflicts that potentially lead to genomic instability due to insufficient replication origins.* -
  • The study found that T. brucei's genome has fewer replication origins than needed, necessitating the activation of backup origins to ensure DNA replication completes in the designated S-phase.* -
  • R-loops formed during transcription can cause DNA damage, triggering the use of backup origins, which is crucial for the parasite's survival and highlights the importance of managing DNA replication amid transcription activities.*
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Replication protein A (RPA), the major eukaryotic single-stranded binding protein, is a heterotrimeric complex formed by RPA-1, RPA-2, and RPA-3. RPA is a fundamental player in replication, repair, recombination, and checkpoint signaling. In addition, increasing evidences have been adding functions to RPA in telomere maintenance, such as interaction with telomerase to facilitate its activity and also involvement in telomere capping in some conditions.

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