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2,016 results on '"Soares, Rodrigo"'

2. The $p-$parabolicity under a decay assumption on the Ricci curvature

Author

Priebe, Lucas S. and Soares, Rodrigo B.

Subjects
Mathematics - Differential Geometry, 35J93, 58J05, 58J32
Abstract

We prove that, given $\alpha>0$, if $M$ is a complete Riemannian manifold which Ricci curvature satisfies.\[\operatorname*{Ric}\nolimits_{x}(v)\geq\alpha\operatorname{sech}^{2} (r(x)))\] or \[ \operatorname*{Ric}\nolimits_{x}(v)\geq-\frac{{h_{\alpha}} (r(x))}{r(x)^{2}}, \] where \[ {h_{\alpha}}(r) = \frac{\alpha(\alpha+1)r(x)^{\alpha }}{r(x)^{\alpha }-1}, \] for all $x\in M\backslash B_{R}(o)$ and for all $v\in T_{x}M,$ $\left\Vert v\right\Vert =1,$ where \ $o$ is a fixed point of $M$, $r(x)=d(o,x)$, $d$ the Riemannian distance in $M$ and $B_{R}(o)$ the geodesic ball of $M$ centered at $o$ with radius $R>0$, then $M$ is $p-$parabolic for any $p>1$, if satisfies the first inequality, and $M$ is $p-$parabolic, for any $p\geq(\alpha+1)(n-1)+1$, if satisfies the second inequality.

Published
2023

4. Editors' Summary

Author

Bernal, Raquel, Panizza, Ugo, Rigobón, Roberto, and Soares, Rodrigo

Published
2012

9. Strategic use of 4 % deltamethrin impregnated-collar in seropositive dogs reduces the incidence of seroreactivity to visceral leishmaniasis in dogs from endemic areas

Author

de Barros Cortez, Luiz Ricardo Paes, Tolezano, José Eduardo, Hiramoto, Roberto Mitsuyoshi, de Paula e Silva, Mário Ramos, Passos, José Eduardo Fogolin, Antônio, Sérgio Henrique, Camprigher, Valéria Medina, Cuoghi, Murilo José Vendramini, Vioti, Geovanna, Ferreira, Fernando, and Soares, Rodrigo Martins

Published
2024
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13. Intricate balance of dually-localized catalase modulates infectivity of Leptomonas seymouri (Kinetoplastea: Trypanosomatidae)

Author

Chmelová, Ľubomíra, Kraeva, Natalya, Saura, Andreu, Krayzel, Adam, Vieira, Cecilia Stahl, Ferreira, Tainá Neves, Soares, Rodrigo Pedro, Bučková, Barbora, Galan, Arnau, Horáková, Eva, Vojtková, Barbora, Sádlová, Jovana, Malysheva, Marina N., Butenko, Anzhelika, Prokopchuk, Galina, Frolov, Alexander O., Lukeš, Julius, Horváth, Anton, Škodová-Sveráková, Ingrid, Feder, Denise, Yu. Kostygov, Alexei, and Yurchenko, Vyacheslav

Published
2024
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15. ASP-2/Trans-sialidase chimeric protein induces robust protective immunity in experimental models of Chagas’ disease

Author

Castro, Julia T., Brito, Rory, Hojo-Souza, Natalia S., Azevedo, Bárbara, Salazar, Natalia, Ferreira, Camila P., Junqueira, Caroline, Fernandes, Ana Paula, Vasconcellos, Ronnie, Cardoso, Jamille M., Aguiar-Soares, Rodrigo D. O., Vieira, Paula M. A., Carneiro, Cláudia M., Valiate, Bruno, Toledo, Cristiane, Salazar, Andres M., Caballero, Otávia, Lannes-Vieira, Joseli, Teixeira, Santuza R., Reis, Alexandre B., and Gazzinelli, Ricardo T.

Published
2023
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17. Short-Finned Pilot Whale Strandings Associated with Pilot Whale Morbillivirus, Brazil

Author

Costa-Silva, Samira, Sacristan, Carlos, Soares, Rodrigo M., Carvalho, Vitor L., Castilho, Pedro V., Cremer, Marta J., Ewbank, Ana Carolina, Duarte-Benvenuto, Arfcia, Faita, Thalita, Navas-Suarez, Pedro E., Vieira, Jenyffer V., Pereira, Leticia G., Alves, Carolina F., Souza, Gabriela C., Lemos, Giulia G., Silvestre-Perez, Natalia, Catao-Dias, Jose L., and Keid, Lara B.

Subjects
Paramyxoviruses -- Identification and classification -- Distribution -- Environmental aspects, Wildlife diseases -- Causes of, Marine mammal strandings -- Health aspects, Pilot whales -- Health aspects, Company distribution practices, Health
Abstract

Cetacean morbillivirus (CeMV; family Paramyxoviridae, genus Morbillivirus) is an important cause of illness and death in cetaceans (1). The genus Morbillivirus comprises 2 lineages: CeMV-1, which includes dolphin morbillivirus (DMV), [...]

Published
2023
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20. MÉTRICA DE DESEMPENHO DA AVALIAÇÃO PROFISSIONAL EM CURSOS TÉCNICOS

Author

Garcia do Amaral, Fernanda, primary, César de Sousa, Paulo, additional, De Oliveira Soares, Rodrigo, additional, Sebba F. de Andrade, Maria Eugênia, additional, Da Silva Magalhães, Alana, additional, Rainer Hilário de Araújo, Wanderson, additional, Rodrigues da Cunha Reis, Márcio, additional, and Pacheco Calixto, Wesley, additional

Published
2023
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23. Down regulation of IL-10 and TGF-β1 mRNA expression associated with reduced inflammatory process correlates with control of parasitism in the liver after treating L. infantum infected dogs with the LBMPL vaccine therapy

Author

Mendes Roatt, Bruno, Mirelle de Oliveira Cardoso, Jamille, Cristiane Fortes de Brito, Rory, Eduardo Soares Reis, Levi, José Lucas Moreira, Gabriel, Melo de Abreu Vieira, Paula, Marques de Souza, Flávia, Geraldo de Lima, Wanderson, Dian de Oliveira Aguiar-Soares, Rodrigo, Cordeiro Giunchetti, Rodolfo, and Barbosa Reis, Alexandre

Published
2022
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24. The Dirichlet problem for the minimal hypersurface equation with Lipschitz continuous boundary data on domains of a Riemannian manifold

Author

Aiolfi, Ari J., Nunes, Giovanni, Sauer, Lisandra, and Soares, Rodrigo B.

Subjects
Mathematics - Differential Geometry
Abstract

Given a C2-domain with compact boundary in an arbitrary complete Riemannian manifold, we search for smallness conditions on the boundary data for which the Dirichlet problem for the minimal hypersurface equation is solvable. We obtain an extension to Riemannian manifolds of an existence result of G. H. Williams ( J. Reine Angew. Math. 354:123-140, 1984).

Published
2017

26. Computational Techniques for Analysis of Thermal Images of Pigs and Characterization of Heat Stress in the Rearing Environment.

Author

Alves, Maria de Fátima Araújo, Pandorfi, Héliton, Soares, Rodrigo Gabriel Ferreira, Almeida, Gledson Luiz Pontes de, Santana, Taize Calvacante, and Silva, Marcos Vinícius da

Subjects
PATTERN recognition systems, THERMAL comfort, IMAGE analysis, INFRARED imaging, THERMOGRAPHY
Abstract

Heat stress stands out as one of the main elements linked to concerns related to animal thermal comfort. This research aims to develop a sequential methodology for the extraction of automatic characteristics from thermal images and the classification of heat stress in pigs by means of machine learning. Infrared images were obtained from 18 pigs housed in air-conditioned and non-air-conditioned pens. The image analysis consisted of its pre-processing, followed by color segmentation to isolate the region of interest and later the extraction of the animal's surface temperatures, from a developed algorithm and later the recognition of the comfort pattern through machine learning. The results indicated that the automated color segmentation method was able to identify the region of interest with an average accuracy of 88% and the temperature extraction differed from the Therma Cam program by 0.82 °C. Using a Vector Support Machine (SVM), the research achieved an accuracy rate of 80% in the automatic classification of pigs in comfort and thermal discomfort, with an accuracy of 91%, indicating that the proposal has the potential to monitor and evaluate the thermal comfort of pigs effectively. [ABSTRACT FROM AUTHOR]

Published
2024
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29. Comparative evaluation of meglumine antimoniate encapsulated in a mixture of conventional and PEGylated liposomes and immunotherapy using an anti-canine IL-10 receptor-blocking monoclonal antibody on canine visceral leishmaniasis

Author

Cardoso, Jamille Mirelle de Oliveira, Brito, Rory Cristiane Fortes de, Mathias, Fernando Augusto Siqueira, Reis, Levi Eduardo Soares, Vieira, João Filipe Pereira, Ostolin, Thais Lopes Valentim Di Paschoale, Andrade, Hélida Monteiro de, Ramos, Guilherme Santos, Frézard, Frédéric, Aguiar-Soares, Rodrigo Dian de Oliveira, Roatt, Bruno Mendes, and Reis, Alexandre Barbosa

Published
2022
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31. Karyotype evolutionary diversification in marine fishes. First classical and molecular cytogenetic data on four Atlantic species

Author

Molina, Wagner Franco, primary, Amorim, Karlla Danielle Jorge, additional, Silva, Simião Alefe Soares da, additional, Cioffi, Marcelo de Bello, additional, Bertollo, Luiz Antonio Carlos, additional, Soares, Rodrigo Xavier, additional, Motta-Neto, Clóvis Coutinho da, additional, and Costa, Gideão Wagner Werneck Félix da, additional

Published
2024
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35. Constant mean curvature surfaces in $\mathbb{H}^2\times\mathbb{R}$ with boundary in two parallel planes

Author

Soares, Rodrigo, Klaser, Patrícia, and Telichevesky, Miriam

Subjects
Mathematics - Differential Geometry
Abstract

Given $H\in [0,\infty),$ some sufficient conditions for existence of CMC $H$ graphs with boundary in two parallel planes of $\mathbb{H}^2\times\mathbb{R}$ are presented. Height estimates for outwards-oriented CMC surfaces (horo)cyllindrically bounded are also exhibited.

Published
2015

40. Bacterial septicemia and herpesvirus infection in Antarctic fur seals (Arctocephalus gazella) stranded in the São Paulo coast, Brazil

Author

Conferencia de Rectores de las Universidades Españolas, Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Ewbank, Ana Carolina [0000-0002-5617-9287], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Costa-Silva, Samira [0000-0002-0294-1870], Silvestre-Perez, Natália [0000-0001-6716-4534], Faita, Thalita [0000-0003-3958-8246], Keid, Lara B. [0000-0003-3212-596X], Ferioli, R.B. [0000-0001-9212-7778], Ibáñez-Porras, Pablo [0009-0004-0618-8646], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [0000-0002-6111-6301], https://ror.org/02gfc7t72, Duarte-Benvenuto, Aricia, Sánchez-Sarmiento, A. M., Ewbank, Ana Carolina, Zamana-Ramblas, Roberta, Costa-Silva, Samira, Silvestre-Perez, Natália, Faita, Thalita, Keid, Lara B., Soares, Rodrigo M., Pessi, C.F., Sabbadini, J.R., Borges, M.F., Ferioli, R.B., Marcon, M., Barbosa, C.B., Fernandes, N.C.C.A., Ibáñez-Porras, Pablo, Navas-Suárez, Pedro Enrique, Catão-Dias, J. L., Sacristán, Carlos, Conferencia de Rectores de las Universidades Españolas, Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Duarte-Benvenuto, Aricia [0000-0002-2172-0838], Ewbank, Ana Carolina [0000-0002-5617-9287], Zamana-Ramblas, Roberta [0000-0002-4422-321X], Costa-Silva, Samira [0000-0002-0294-1870], Silvestre-Perez, Natália [0000-0001-6716-4534], Faita, Thalita [0000-0003-3958-8246], Keid, Lara B. [0000-0003-3212-596X], Ferioli, R.B. [0000-0001-9212-7778], Ibáñez-Porras, Pablo [0009-0004-0618-8646], Navas-Suárez, Pedro Enrique [0000-0003-1385-901X], Catão-Dias, J. L. [0000-0003-2999-3395], Sacristán, Carlos [0000-0002-6111-6301], https://ror.org/02gfc7t72, Duarte-Benvenuto, Aricia, Sánchez-Sarmiento, A. M., Ewbank, Ana Carolina, Zamana-Ramblas, Roberta, Costa-Silva, Samira, Silvestre-Perez, Natália, Faita, Thalita, Keid, Lara B., Soares, Rodrigo M., Pessi, C.F., Sabbadini, J.R., Borges, M.F., Ferioli, R.B., Marcon, M., Barbosa, C.B., Fernandes, N.C.C.A., Ibáñez-Porras, Pablo, Navas-Suárez, Pedro Enrique, Catão-Dias, J. L., and Sacristán, Carlos

Abstract

In August 2021, two juvenile male Antarctic fur seals (Arctocephalus gazella) stranded in the southeastern Brazilian coast and were referred to rehabilitation centers. The animals presented increased body temperature, prostration, respiratory distress and despite treatment died. A necropsy following a standardized protocol was performed, and formalin-fixed tissues were processed for microscopic examination. Samples were screened for morbillivirus, herpesvirus, and Brucella spp. by molecular analyses (PCR, RT-PCR). Bacteriological culture was performed in samples collected from the lungs, trachea, and lymph nodes of both cases. The main histopathologic findings were of infectious nature, including multifocal necrotizing and fibrinous mixed interstitial pneumonia, bronchiolitis, and bronchitis, with intralesional myriad bacteria associated with vascular fibrinoid necrosis. Pseudomonas aeruginosa was isolated from tracheal and lung swabs of Case 1, and Klebsiella oxytoca was found in nostril swabs, tracheobronchial lymph nodes, and lung of Case 2. Gammaherpesvirus infection was detected in both cases, and the sequences retrieved were classified into the genus Percavirus. All tested samples were PCR-negative for Brucella spp. and morbillivirus. We hypothesize that the deficient immunological status in association with starvation predisposed the reactivation of herpesvirus and secondary bacterial co-infections. To the authors' knowledge, this is the first molecular detection of herpesvirus in an Antarctic pinniped. These findings reinforce that Otariid gammaherpesvirus circulating in the Southern Hemisphere are likely endemic in the Arctocephalus genus. This report contributes to the current knowledge of health aspects affecting wild pinnipeds, especially in the poorly studied Antarctic species.

Published
2024

42. Unveiling the Enigmatic nature of six neglected Amazonian Leishmania (Viannia) species using the hamster model: Virulence, Histopathology and prospection of LRV1.

Author

Soares, Rodrigo Pedro, Fontes, Igor Campos, Dutra-Rêgo, Felipe, Rugani, Jeronimo Nunes, Moreira, Paulo Otávio L., da Matta, Vânia Lúcia Ribeiro, Flores, Gabriela Venícia Araujo, Pacheco, Carmen Maria Sandoval, de Andrade, Andrey José, da Costa-Ribeiro, Magda Clara Vieira, Shaw, Jeffrey Jon, and Laurenti, Márcia Dalastra

Subjects
*GOLDEN hamster, *PERITONEAL macrophages, *FLIES as carriers of disease, *SAND flies, *PRINCIPAL components analysis
Abstract

American tegumentary leishmaniasis (ATL) is highly endemic in the Amazon basin and occurs in all South American countries, except Chile and Uruguay. Most Brazilian ATL cases are due to Leishmania (Viannia) braziliensis, however other neglected Amazonian species are being increasingly reported. They belong to the subgenus L. (Viannia) and information on suitable models to understand immunopathology are scarce. Here, we explored the use of the golden hamster Mesocricetus auratus and its macrophages as a model for L. (Viannia) species. We also studied the interaction of parasite glycoconjugates (LPGs and GIPLs) in murine macrophages. The following strains were used: L. (V.) braziliensis (MHOM/BR/2001/BA788), L. (V.) guyanensis (MHOM/BR/85/M9945), L. (V.) shawi (MHOM/BR/96/M15789), L. (V.) lindenbergi (MHOM/BR/98/M15733) and L. (V.) naiffi (MDAS/BR/79/M5533). In vivo infections were initiated by injecting parasites into the footpad and were followed up at 20- and 40-days PI. Parasites were mixed with salivary gland extract (SGE) from wild-captured Nyssomyia neivai prior to in vivo infections. Animals were euthanized for histopathological evaluation of the footpads, spleen, and liver. The parasite burden was evaluated in the skin and draining lymph nodes. In vitro infections used resident peritoneal macrophages and THP-1 monocytes infected with all species using a MOI (1:10). For biochemical studies, glycoconjugates (LPGs and GIPLs) were extracted, purified, and biochemically characterized using fluorophore-assisted carbohydrate electrophoresis (FACE). They were functionally evaluated after incubation with macrophages from C57BL/6 mice and knockouts (TLR2-/- and TLR4-/-) for nitric oxide (NO) and cytokine/chemokine production. All species, except L. (V.) guyanensis, failed to generate evident macroscopic lesions 40 days PI. The L. (V.) guyanensis lesions were swollen but did not ulcerate and microscopically were characterized by an intense inflammatory exudate. Despite the fact the other species did not produce visible skin lesions there was no or mild pro-inflammatory infiltration at the inoculation site and parasites survived in the hamster skin/lymph nodes and even visceralized. Although none of the species caused severe disease in the hamster, they differentially infected peritoneal macrophages in vitro. LPGs and GIPLs were able to differentially trigger NO and cytokine production via TLR2/TLR4 and TLR4, respectively. The presence of a sidechain in L. (V.) lainsoni LPG (type II) may be responsible for its higher proinflammatory activity. After Principal Component analyses using all phenotypic features, the clustering of L. (V.) lainsoni was separated from all the other L. (Viannia) species. We conclude that M. auratus was a suitable in vivo model for at least four dermotropic L. (Viannia) species. However, in vitro studies using peritoneal cells are a suitable alternative for understanding interactions of the six L. (Viannia) species used here. LRV1 presence was found in L. (V.) guyanensis and L. (V.) shawi with no apparent correlation with virulence in vitro and in vivo. Finally, parasite glycoconjugates were able to functionally trigger various innate immune responses in murine macrophages via TLRs consistent with their inflammatory profile in vivo. Author summary: American Tegumentary Leishmaniasis (ATL) is one of the major neglected diseases occurring in Brazil and the Amazon contributes with a wide range of species that are not completely known. These little-known species are transmitted to rural workers entering the forest during lumbering, mining, and latex extraction activities and rarely in peri domestic situation. Infection occurs by the bite of infected sand flies in different environments and biomes. One of the major constraints in studying L. (Viannia) species is the difficulty of finding suitable animal and cellular models to investigate their biology. The mouse model is not a suitable model for most L. (Viannia) species. However, hamsters were considered a good model for L. (V.) braziliensis. In the search for a better model for some neglected dermotropic Amazonian Leishmania, we evaluated interactions in vivo in the hamster and in vitro in its macrophages. All species infected cells in vitro, but hamsters could only be considered as a suitable in vivo model for L. (V.) guyanensis. Importantly the glycoconjugates of the six L. (Viannia) species were very proinflammatory, showing various levels of macrophage activation. This paper opens possibilities of determining more accurately the taxonomic position of L. (V.) lainsoni within the subgenus L. (Viannia). [ABSTRACT FROM AUTHOR]

Published
2024
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47. IL-17A/IFN-γ producing γ δ T cell functional dichotomy impacts cutaneous leishmaniasis in mice

Author

Dos-Santos, Julio Souza, primary, Firmino-Cruz, Luan, additional, Oliveira-Maciel, Diogo, additional, da Fonseca-Martins, Alessandra M, additional, Ramos, Tadeu Diniz, additional, Nunes-Souza, Leticia, additional, Soares, Rodrigo Pedro, additional, Gomes, Daniel Claudio Oliveira, additional, Mengel, Jose O., additional, Silva-Santos, Bruno, additional, and de Matos Guedes, Herbert L, additional

Published
2024
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49. The absence of eosinophils is associated with early metastatic lesions in Leishmania amazonensis-infected mice

Author

Almeida, Gregório Guilherme, primary, Luehring, Tassiane Assíria Martins, additional, Paixão, Pierre Henrique de Menezes, additional, Soares, Rodrigo Pedro, additional, de Barros, André Luís Branco, additional, do Monte-Neto, Rubens Lima, additional, Tafuri, Wagner Luiz, additional, Negrão-Corrêa, Deborah Aparecida, additional, and Gonçalves, Ricardo, additional

Published
2024
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