Publications by authors named "P Freitas-Costa"
Diversity and Efficiency of Rhizobia from a Revegetated Area and Hotspot-Phytophysiognomies Affected by Iron Mining as Indicators of Rehabilitation and Biotechnological Potential.
Curr Microbiol
December 2022
This study aimed to evaluate the resilience of phytophysiognomies under influence of iron mining by assessing the occurrence, diversity, and symbiotic efficiency of native communities of nitrogen-fixing bacteria that nodulate leguminous plants (rhizobia) in soils of an area revegetated with grass after iron mining activities and in the phytophysiognomies in adjacent areas (Canga, Atlantic Forest, Cerrado, and Eucalyptus-planted forest). Experiments for capturing rhizobia through two species of promiscuous plants, siratro (Macroptilium atropurpureum) and cowpea (Vigna unguiculata), were conducted in a greenhouse. The rhizobial strains isolated were characterized phenotypically, genetically (16S rRNA sequencing and BOX-PCR fingerprinting), and regard symbiotic efficiency of biological nitrogen fixation (BNF) compared to mineral nitrogen and reference strains.
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- The study aimed to assess how effective the "fogging test" with a +2 diopters lens is in identifying significant hyperopia (farsightedness) in children aged 5 to 11 years.
- Results showed the test is very accurate for detecting hyperopia of ≥+2 D, achieving 100% sensitivity, though it was less effective for ≥+1.5 D hyperopia.
- The findings suggest that a visual acuity cutoff of ≥5/10 can be used to potentially exclude significant hyperopia in some children, but for those with ≥5/10 visual acuity, further testing (cycloplegic refraction) is necessary.
Introduction: To evaluate the safety and impact on visual acuity, retinal and choroidal morphology of simultaneous cataract surgery and intravitreal anti-vascular endothelial growth factor on patients with visually significant cataracts and previously treated exudative age-related macular degeneration.
Material And Methods: Prospective study, which included 21 eyes of 20 patients with exudative age-related macular degeneration submitted to simultaneous phacoemulsification and intravitreal ranibizumab or bevacizumab. The patients were followed for 12 months after surgery using a pro re nata strategy.
Introduction: Choroidal neovascularization secondary to pathological myopia is one of the leading causes of irreversible central vision loss in younger patients. The purposes of our study is to evaluate the long-term results of antiangiogenic treatment, with ranibizumab and/or bevacizumab, in myopic choroidal neovascularization and define the predictive factors for visual and anatomic outcomes.
Material And Methods: In this study were included 84 eyes from 81 patients with myopic choroidal neovascularization.