Rodrigo Machado results 194
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Antimicrobial resistance (AMR) represents one of the major threats to global public health, particularly in hospital settings. Among the most concerning pathogens are carbapenemase-producing Enterobacterales (CPE), which compromise the effectiveness of last-line antibiotics such as meropenem. This study aimed to analyze the prevalence of carbapenemase production among Enterobacterales classified as resistant or susceptible, in...
The production of biogas as a strategy for biotransforming large volumes of waste into bioenergy is one of the alternatives for reducing greenhouse gases. Metabarcoding analysis aims to understand the role of microbiota from the beginning of the process in the success of biogas production. This study compared microbial diversity and metabolic prediction in a pilot plant producing biogas for vehicular use, utilizing organic sol...
Monitoring bioremediation of an impacted coastal lagoon through nature-based solutions: a case study of the Maricá Lagoon (RJ, Brazil)NARA Subscribed
This study evaluates bioremediation using effective microorganisms (EM) to improve quality in the eutrophic Maricá Lagoon (RJ, Brazil). The intervention, implemented in late 2021, consisted of the regular application of EM in one of the lagoon’s main fluvial contributors: the Mumbuca-Ubatiba drainage basin. To evaluate bioremediation, physicochemical and biogeochemical variables were monitored in the water column and sediments...
Hemoparasitoses in domestic cats are increasingly recognized as an emerging challenge for veterinary medicine and public health due to their subclinical persistence and zoonotic potential. This study aimed to detect Anaplasma platys , Bartonella henselae , and hemotropic mycoplasmas ( Mycoplasma haemofelis [ Mhf ] and ‘ Candidatus Mycoplasma haemominutum’ [ C Mhm]) in clinically healthy cats from Pelotas, southern Brazil, usin...
Biosecurity assessment and seroprevalence of relevant poultry diseases in Saint Kitts commercial poultry premisesNARA Subscribed
Saint Kitts (St. Kitts) and Nevis is a federation of two islands located within the West Indies. St. Kitts is anecdotally known to have commercial egg production, but disease prevalence and biosecurity practices of these farms have not previously been studied. In this study, we evaluated biosecurity practices of 11 commercial farms through a biosecurity questionnaire given to the farmers and collected blood and oropharyngeal s...
Dual inhibition of MMP-2 and actin dynamics by a novel bis-chalcone: an anticancer strategy for oral squamous cell carcinomaNARA Subscribed
Oral squamous cell carcinoma (OSCC), accounts for approximately 90% of oral cancer cases, and due to its aggressive nature and limited treatment options remains a significant clinical challenge. In the pursuit of novel therapeutic agents, bis-chalcones (a subclass of chalcones) have emerged as promising candidates with multipronged anticancer potential. In this study, we synthesized and evaluated a novel bis-chalcone (B2OCH 3...
The reproductive biology of Dyckia scrutor (Bromeliaceae): an endangered species endemic to Campos RupestresNARA Subscribed
Pollinators are crucial for the conservation of endangered species, providing essential ecosystem services that support plant reproduction. Dyckia scrutor is an endangered species of bromeliad endemic to Campos Rupestres . The genus Dyckia presents species pollinated by both nocturnal and diurnal visitors, with bats and hummingbirds as the most important pollinators. However, the few existing studies about D. scrutor make it d...
Successional agroforestry systems as land use that promote the restoration and conservation of ant assemblages in the AmazonNARA Subscribed
Land-use changes, driven by the expansion of agriculture and livestock farming, are one of the main drivers of biodiversity loss in the Amazon region. In this context, Succesional Agroforestry Systems - SAFs, emerge as a potential alternative to reconcile agricultural production with biodiversity conservation and restoration. This study assessed the impact of different land-use types on ant diversity and the composition of hab...