Fernando Lima results 533
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Background Microsatellite and mitochondrial markers are important tools for investigating natural populations, enabling the assessment of their diversity, genetic structure, kinship, parentage, and reproductive biology. Although the importance of such markers is widely recognized, their use in Neotropical mammals, especially marsupials, is still limited by the scarcity of species-specific loci characterized for extant species....
The CCR5Δ32 polymorphism is a 32-base pair deletion in the CCR5 gene that has been associated with slower HIV disease progression. However, its role in immune reconstitution during antiretroviral therapy (ART) remains unclear. We analyzed 236 virologically suppressed people living with HIV (PLHIV) after 24 months of ART, comprising 217 individuals homozygous for the wild-type CCR5 allele and 19 heterozygous carriers of CCR5Δ32...
Mastitis is a disease that affects dairy cattle and can be caused by multidrug-resistant Escherichia coli , causing losses to the agricultural sector. To address this, research into new substances with antimicrobial activity is crucial. Thus, the objective of this study was to evaluate the efficacy of extracts of Commiphora leptophloeos , Amburana cearensis , Agave sisalana , and highly soluble polypyrrole (Hs-PPy) against E....
This study investigated whether long-term methylmercury exposure aggravates apical periodontitis in Wistar rats. Thirty-two male rats (90 days old) were randomized into four groups (n = 8): control, methylmercury, apical periodontitis, and methylmercury + apical periodontitis. Methylmercury was administered daily by intragastric gavage (0.04 mg/kg/day) for 60 days, while apical periodontitis was induced on day 32 by pulp expos...
Adaptive Variation Amid High Gene Flow Across a Broad Latitudinal Gradient in the Reef‐Building Honeycomb Worm, Sabellaria alveolataNARA Subscribed
Climate change is already altering, and will continue to reshape, the persistence and spatial structure of marine populations. Understanding metapopulation connectivity and local adaptation is therefore critical for identifying both vulnerable populations and those with adaptive resilience. We applied a seascape genomics approach to investigate connectivity patterns and adaptive responses in the honeycomb worm, Sabellaria alve...
Optimizing maize–Brachiaria intercropping requires effective weed management with selective maize herbicides. This study evaluated the spray performance and efficacy of atrazine + nicosulfuron for weed management in maize–Brachiaria intercropping, focusing on how droplet classes and spray volumes affect maize growth and yield. The deposition experiment was conducted in a greenhouse in a completely randomized design with six re...
Moraxella tarda sp. nov., a Novel Species Isolated from Nasal Cavity of Cattle with Infectious Bovine KeratoconjunctivitisNARA Subscribed
A novel bacterial species was isolated from the nasal mucosa of Hereford cattle exhibiting early clinical signs of infectious bovine keratoconjunctivitis on a beef cattle farm in the Pampa biome, southern Brazil, in 2018. Cells were Gram-stain-negative cocci and exhibited slow growth under standard laboratory conditions, with optimal growth at 35 °C, pH 7.5, and 1.0% NaCl. The draft genome comprised approximately 1.86 Mbp (Gen...
Purpose To investigate the effects of 24 weeks of resistance training (RT) on pro- and active matrix metalloproteinases (MMPs) and their association with functional performance in end-stage kidney disease (ESKD) patients undergoing hemodialysis. Methods Forty-two ESKD patients (mean age: 65 ± 4 years; dry body mass: 71 ± 16 kg; body mass index: 25 ± 3 kg/m 2 ) were randomized into two groups: the control (CTL, n = 20) and RT g...
Rhizosphere organic acids drive nutrient release from silicate rock powders across contrasting tropical soilsNARA Subscribed
Aims Silicate rock powders can enhance nutrient availability through rhizosphere-mediated mineral weathering. Although organic acids mediate this process, how soil fertility shapes their interactions with rhizosphere microbial communities and nutrient release remains poorly understood. He, we evaluated how contrasting soil fertility influences rhizosphere organic acids, microbial communities, and nutrient release from silicate...
Ontogenetic Development of Hyperostosis in the Crevalle Jack Caranx hippos (Linnaeus, 1766) and New Records of Affected Bone RegionsNARA Subscribed
Hyperostosis is a non‐pathological condition widely reported in marine teleosts, yet its developmental dynamics and underlying drivers remain poorly understood. This study investigates the ontogenetic progression and anatomical distribution of hyperostosis in Caranx hippos based on a growth series of 39 specimens collected along the Brazilian coast. Individuals were categorised into two size classes (class 1 C. hippos , with m...