Publications by authors named "G A Miranda"

Background: Pulmonary hypertension caused by extrinsic pulmonary vascular compression secondary to mediastinal neuroendocrine tumours is a very rare condition, posing a diagnostic challenge. There is no clear consensus regarding the best treatment strategy due to the lack of clinical data, leading to poor prognoses for these patients.

Case Summary: We present the case of a 38-year-old man hospitalized with signs of pulmonary hypertension and acute heart failure.

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Pharmacological management of HDP includes agents supported by extensive evidence ensuring their safety for use. Among those traditionally described in the literature are: alpha-methyldopa, labetalol, and sustained-release nifedipine (NIF-RETARD). These drugs, in addition to being compatible with pregnancy, present additional eligibility criteria.

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Thiadiazines are heterocyclic compounds known for some pharmacological activities. However, the ability of these compounds and their derivatives to act as antibacterial agents and inhibitors of the efflux system in resistant bacteria remains unknown. This study aims to evaluate the antibacterial and NorA efflux pump inhibitory activities of thiadiazine-derived compounds (IJ14, IJ15, IJ16, IJ17, IJ18, IJ19, and IJ20) against the Staphylococcus aureus 1199B strain.

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This study developed a biodegrading additive based on nanosilica and modified by cellulase enzyme in the presence of citric acid and sodium citrate. The additive was tested as a facilitator for biodegradation of the commercial low-density polyethylene (LDPE) in soil. Enzyme immobilization was confirmed by enzymatic assays.

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Article Synopsis
  • - The study revises the Neotropical flower fly genus Orthonevra, describing 12 new species, each with illustrations, including names like Orthonevra batman and O. cthulhu.
  • - Seven existing species were redescribed and illustrated, while three Nearctic species were identified, bringing the total number of Neotropical species to 20.
  • - The research also designates lectotypes for two species, removes one from the genus, and provides a dichotomous and interactive pictorial key for identifying these species.
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