Phytochemical screening of Podocarpus lambertii Klotzch ex Endl. leaf extracts and potential antimicrobial, antioxidant and antibiofilm activity
An Acad Bras Cienc. 2024 Apr 12;96(3):e20230237. doi: 10.1590/0001-3765202420230237. eCollection 2024.ABSTRACTSpecies of the genus Podocarpus L'Hér. ex Pers.present biological activities, such as analgesic, antioxidant, antifungal, acting in the fight against anemia, depurative and fortifying. Podocarpus lambertii Klotzch ex Endl. is a Brazilian native species popularly known as maritime pine and lacks information about its phytochemical profile and possible biological activities. The study was conducted to determine the phytochemical composition of soluble plant extracts of acetone (EA), ethyl acetate (EAE) and hexane (H...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Debora Marina Bandeira Juliana M Corr êa Larissa Val éria Laskoski J éssica Rosset L ázaro Henrique S M Conceição Simone D Gomes Fabiana Gisele S Pinto Source Type: research
Effect of experimental pulmonary arterial hypertension on renal and bone parameters of rats submitted to resistance exercise training
This study aimed to assess the impacts of stable PAH induced by monocrotaline (MCT) and RT on renal morphometry, as well as bone morphometry and biomechanical properties in male Wistar rats. Four experimental groups, untrained control (UC, n=7), trained control (TC, n=7), untrained hypertensive (UH, n=7), trained hypertensive (TH, n=7), were defined. After the first MCT or saline injection (20 mg/kg), trained rats were submitted to a RT program (i.e., Ladder climbing), 5 times/week. Seven days later the rats received the second MCT or saline dose. After euthanasia, renal and femoral histomorphometry and femoral biomechanic...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Le ôncio L Soares Luciano B Leite Ma íra O Freitas Luiz Ot ávio G Ervilha Mayra S P íccolo Alexandre M O Portes Filipe R Drummond Leonardo Mateus T DE Rezende Mariana M Neves Emily C C Reis Miguel A Carneiro-J únior Ant ônio José Natali Source Type: research
Genetic divergence accessed with microsatellite markers reflects the time of Crassostrea gigas genetic breeding in Brazil
This study employed microsatellite markers to compare allelic patterns of oysters cultivated in Santa Catarina, the USA, and Asia. Specific allelic patterns were revealed in the Santa Catarina samples, reflecting the time of selection/breeding of the oyster in this region. This result supports the effectiveness of the selection/breeding procedures and the demand for protection of this commercially important genetic resource.PMID:38655921 | DOI:10.1590/0001-3765202420230474 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Valdir Marcos Stefenon Alan David Clauman Source Type: research
Empowering Indigenous students to engage in Amazon conservation
An Acad Bras Cienc. 2024 Apr 12;96(3):e20230827. doi: 10.1590/0001-3765202420230827. eCollection 2024.NO ABSTRACTPMID:38655922 | DOI:10.1590/0001-3765202420230827 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Sergio Santorelli Junior Jos é Augusto Pirahã Kaa'aoi Rafael DE Fraga Lis F Stegmann Daniela B ôlla Igor Yuri Fernandes Jansen Zuanon William E Magnusson Source Type: research
Distribution and diversification of Adelphobates, emblematic poison frogs from Brazilian Amazonia
An Acad Bras Cienc. 2024 Apr 19;96(1):e20230659. doi: 10.1590/0001-3765202320230659. eCollection 2024.ABSTRACTAdelphobates contains three species, and the inaccurate identification of A. quinquevittatus and the scarcity of records of A. castaneoticus complicate inference of their distributions; the latter species occurs in sympatry with A. galactonotus. Our objective was to revise the distributions of Adelphobates by compiling data and modeling habitat suitability, as range limits may be shaped by landscape features and biotic interactions. We initially analyzed the existence of operational taxonomic units within the nomin...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Larissa A DE Medeiros Eduardo Gentil Igor L Kaefer Mario Cohn-Haft Source Type: research
Growth and carbon turnover of Piaractus mesopotamicus Holmberg, 1887 (Osteicthyes: Characidae): contribution of extruded feed and natural food
This study evaluates effects of feed allowance on the productive performance, carbon turnover and proportions of nutrient (carbon) contribution of feed and natural food for the growth of pacu. Juvenile fish were stocked in fiberglass tanks and fed to 100, 75, 50, 25, 0% apparent satiety (ApS), with a practical, extruded (C4 photosynthetic pathway) feed in a randomized design trial (n=3); plankton production for simulated semi-intensive farming system condition was induced by chemical fertilization. A control treatment was set up in tanks devoid of natural food. Data on muscle stable carbon isotope ratios were used to study...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Fredy Armando A Aguilar Rafael S C Barone Gerson B Mour ão Luiz Antonio Martinelli Jos é Eurico P Cyrino Source Type: research
Biogeographic history and environmental gradients modulate non-stationary patterns of tropical tree diversity
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230063. doi: 10.1590/0001-3765202420230063. eCollection 2024.ABSTRACTHere we studied the entire Atlantic Forest hotspot to investigate whether the effect of different environmental predictors depends on the phylogenetic extension and the biogeographical history of different Atlantic Forest sectors. We used occurrence data of 3,183 plant species with arboreal or arborescent habits. We reconstructed climatic stability across 120,000 years using the Random Forest method. Then, we compared the effect of biogeographical history, topographic, and climatic variables on species richness and...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Paulo S érgio M Ferreira Thiago Gon çalves-Souza Lilian S Ouchi-Melo Ary T Oliveira-Filho Maria Jesus N Rodal Source Type: research
Machine learning classification based on k-Nearest Neighbors for PolSAR data
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230064. doi: 10.1590/0001-3765202420230064. eCollection 2024.ABSTRACTIn this work, we focus on obtaining insights of the performances of some well-known machine learning image classification techniques (k-NN, Support Vector Machine, randomized decision tree and one based on stochastic distances) for PolSAR (Polarimetric Synthetic Aperture Radar) imagery. We test the classifiers methods on a set of actual PolSAR data and provide some conclusions. The aim of this work is to show that suitable adapted standard machine learning methods offer excellent performances vs. computational comp...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Jodavid A Ferreira Anny K G Rodrigues Raydonal Ospina Luis Gomez Source Type: research
Platinum Nanoparticles Supported by Carbon Nanotubes: Improvement in electrochemical sensor performance for caffeine determination
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230067. doi: 10.1590/0001-3765202420230067. eCollection 2024.ABSTRACTPlatinum nanoparticles supported by carbon nanotubes were obtained by a simple chemical route and used for preparation of electrochemical sensor towards caffeine determination. Carbon nanotubes were used before and after an acid treatment, yielding two different materials. Morphological and structural characterization of these materials showed platinum nanoparticles (size around 12 nm) distributed randomly along carbon nanotubes. Modified electrodes were directly prepared through a dispersion of these materials. Vo...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Adir H Kalinke Luiz H Marcolino-Junior Marcio F Bergamini Aldo J G Zarbin Source Type: research
The potential of lemon peel powder as an additive in layer quails (Coturnix coturnix Japonica): An experimental study
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230640. doi: 10.1590/0001-3765202420230640. eCollection 2024.ABSTRACTThe current research intended to examine the impact of dietary lemon peel powder (LPP) on laying quail performance, egg quality criteria, and the antioxidant capacity of the yolk. A total of 120 female Japanese quails (272.6±9.3 g), aged 21 weeks, were allotted to 6 trial groups, each with 5 replicates of 4 quails. Additions of 0, 1, 2, 3, 4, or 5 g/kg of LPP to the basal diet were used to create the treatment groups. Quails were fed ad libitum for 70 days. Neither performance parameters nor egg production was aff...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Ainhoa Sarmiento- Garc ía Osman Olgun Esra T G ül G özde Kilinç Alp önder Yildiz Source Type: research
Global distribution patterns and geographic range of Cymothoa Fabricius, 1793 (Isopoda: Cymothoidae) associated with host fish
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230706. doi: 10.1590/0001-3765202420230706. eCollection 2024.ABSTRACTOver recent years, fish parasites of the genus Cymothoa Fabricius, 1793, have received increased attention due to both their ecological and their economic importance to aquaculture and fishery. As the studies about Cymothoa have increased this improve our understanding on the host specificity and distribution of these parasites. The aim of this paper was to review the current global geographic distribution, distribution patterns and parasite-host interactions patterns of Cymothoa spp. associated with fish from mari...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Marcos Tavares-Dias Marcos Sidney B Oliveira Source Type: research
Patients hospitalized with active tuberculosis and Covid-19 coinfection: A matched case-control from the Brazilian Covid-19 Registry
An Acad Bras Cienc. 2024 Apr 22;96(1):e20230791. doi: 10.1590/0001-3765202420230791. eCollection 2024.ABSTRACTAlthough control of Covid-19 has improved, the virus continues to cause infections, such as tuberculosis, that is still endemic in many countries, representing a scenario of coinfection. To compare Covid-19 clinical manifestations and outcomes between patients with active tuberculosis infection and matched controls. This is a matched case-control study based on data from the Brazilian Covid-19 Registry, in hospitalized patients aged 18 or over with laboratory confirmed Covid-19 from March 1, 2020, to March 31, 2022...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Rafael L R Carvalho Gabriella G Aguiar Jessica F B Moreira Daniella N Pereira Val éria Maria Augusto Alexandre V Schwarzbold Carolina C Matos Danyelle R A Rios Fel ício R Costa Fernando Anschau Jos é Miguel Chatkin Karen B Ruschel Marcelo Carneiro Neim Source Type: research
Phytochemical screening of Podocarpus lambertii Klotzch ex Endl. leaf extracts and potential antimicrobial, antioxidant and antibiofilm activity
An Acad Bras Cienc. 2024 Apr 12;96(3):e20230237. doi: 10.1590/0001-3765202420230237. eCollection 2024.ABSTRACTSpecies of the genus Podocarpus L'Hér. ex Pers.present biological activities, such as analgesic, antioxidant, antifungal, acting in the fight against anemia, depurative and fortifying. Podocarpus lambertii Klotzch ex Endl. is a Brazilian native species popularly known as maritime pine and lacks information about its phytochemical profile and possible biological activities. The study was conducted to determine the phytochemical composition of soluble plant extracts of acetone (EA), ethyl acetate (EAE) and hexane (H...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Debora Marina Bandeira Juliana M Corr êa Larissa Val éria Laskoski J éssica Rosset L ázaro Henrique S M Conceição Simone D Gomes Fabiana Gisele S Pinto Source Type: research
Effect of experimental pulmonary arterial hypertension on renal and bone parameters of rats submitted to resistance exercise training
This study aimed to assess the impacts of stable PAH induced by monocrotaline (MCT) and RT on renal morphometry, as well as bone morphometry and biomechanical properties in male Wistar rats. Four experimental groups, untrained control (UC, n=7), trained control (TC, n=7), untrained hypertensive (UH, n=7), trained hypertensive (TH, n=7), were defined. After the first MCT or saline injection (20 mg/kg), trained rats were submitted to a RT program (i.e., Ladder climbing), 5 times/week. Seven days later the rats received the second MCT or saline dose. After euthanasia, renal and femoral histomorphometry and femoral biomechanic...
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Le ôncio L Soares Luciano B Leite Ma íra O Freitas Luiz Ot ávio G Ervilha Mayra S P íccolo Alexandre M O Portes Filipe R Drummond Leonardo Mateus T DE Rezende Mariana M Neves Emily C C Reis Miguel A Carneiro-J únior Ant ônio José Natali Source Type: research
Genetic divergence accessed with microsatellite markers reflects the time of Crassostrea gigas genetic breeding in Brazil
This study employed microsatellite markers to compare allelic patterns of oysters cultivated in Santa Catarina, the USA, and Asia. Specific allelic patterns were revealed in the Santa Catarina samples, reflecting the time of selection/breeding of the oyster in this region. This result supports the effectiveness of the selection/breeding procedures and the demand for protection of this commercially important genetic resource.PMID:38655921 | DOI:10.1590/0001-3765202420230474 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - April 24, 2024 Category: Science Authors: Valdir Marcos Stefenon Alan David Clauman Source Type: research
