14 results on '"Barbuio, Roberto"'
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2. Eficiencia de diferentes tipos de inoculantes en el cultivo de soja
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Melo, Aurélio Ferreira, primary, Freitas, Thais Miranda Silva, additional, Barbuio, Roberto, additional, Moreira, Juracy Mendes, additional, and Lima Junior, Antônio Florentino de, additional
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- 2023
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3. Teflubenzuron as a tool for control of trichodinids in freshwater fish: Acute toxicity and in vivo efficacy
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Ikefuti, Cynthia Venâncio, Carraschi, Silvia Patrícia, Barbuio, Roberto, da Cruz, Claudinei, de Pádua, Santiago Benites, Onaka, Eduardo Makoto, and Ranzani-Paiva, Maria José Tavares
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- 2015
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4. Effectiveness of therapeutic agents in disease treatment in Piaractus mesopotamicus
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Carraschi, Silvia Patrícia, Barbuio, Roberto, Ikefuti, Cynthia Venâncio, Florêncio, Taise, da Cruz, Claudinei, and Ranzani-Paiva, Maria José Tavares
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- 2014
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5. Histopathological biomarkers in pacu (Piaractus mesopotamicus) infected with aeromonas hydrophila and treated with antibiotics
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Patrícia Carraschi, Silvia, da Cruz, Claudinei, Machado Neto, Joaquim Gonçalves, Fernanda Ignácio, Naiara, Barbuio, Roberto, and Fernandes Machado, Márcia Rita
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- 2012
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6. Esteatose hepática altera acúmulo celular em tilápias do Nilo durante aerocistite infecciosa
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Moraes, Alessandra C., Prado, Ed J.R., Foz, Elizabeth P., Barbuio, Roberto, Faria, Vanessa P., Belo, Marco A.A., Universidade Estadual Paulista (Unesp), Médica Veterinária Autônoma, and Laboratório de Patologia Clínica Max Vet Hospital Veterinário
- Subjects
Hepatic steatosis ,Esteatose hepática ,inflamação aguda ,glicocorticoide ,digestive system ,peixe ciclídeo ,aerocistite infecciosa ,esteatose ,Glucocorticoid ,Cichlid fish ,tilápias ,Aerocystitis ,tetracloreto de carbono ,Acute inflammation ,Carbon tetrachloride ,Tilapia - Abstract
RESUMO: O presente estudo avaliou a hepatotoxicidade induzida pelo CCl4 durante o efeito glicocorticoide da dexametasona (DEX) na fisiopatologia da reação inflamatória aguda em tilápias do Nilo, Oreochromis niloticus, correlacionando a funcionalidade hepática à cinética de acúmulo celular em aerocistite infecciosa. Para tal, utilizou-se 84 tilápias do Nilo distribuídas em 4 tratamentos: controle, CCl4, DEX e CCl4+DEX. Sendo amostrados 7 animais por tratamento em três períodos, isto é: seis, 24 e 48h após indução de inflamação. Utilizou-se CCl4 em dose única de 0,5mL/kg, via intraperitoneal para causar o transtorno hepático. Para indução da aerocistite utilizou-se inóculo de Aeromonas hydrophila. A dexametasona foi administrada via intramuscular na dose de 2 mg/kg de peso vivo. Os resultados revelaram que quanto maior foi à atividade sérica de aspartato aminotransferase (AST) maior foi a alteração somática do fígado, sendo estes achados inversamente proporcionais ao acúmulo celular no foco inflamatório, demonstrando menor número de células inflamatórias nos animais acometidos com maior grau de distúrbios hepáticos induzidos pelo CCl4. O estudo histopatológico revelou alterações degenerativas transitórias na fase mais aguda, pois os fígados das tilápias revelaram o acúmulo lipídeos nos hepatócitos 6h após administração de CCl4, sendo esta degeneração gordurosa não mais observada nos tempos de 24 e 48h. Contudo, a administração de CCl4 em tilápias do Nilo resultou em degeneração hepática aguda e transitória, caracterizada pelo acúmulo de gordura nos hepatócitos, aumento de AST no sangue e hepatomegalia. Com a disfunção hepática houve comprometimento do recrutamento celular em aerocistite infecciosa, indicando que há participação do fígado na resposta imune inata em peixes. ABSTRACT: The study evaluated the hepatotoxicity induced by CCl4 during the glucocorticoid effect of dexamethasone (DEX) on the pathophysiology of the acute inflammatory reaction in Nile tilapia, Oreochromis niloticus, correlating hepatic functionality with cellular accumulation kinetics in infectious aerocystitis. Eighty- four Nile tilapia were distributed into four treatments: control, CCl4, DEX and CCl4 + DEX. Seven tilapia were sampled per treatment in three periods: 6, 24 and 48h after induction of inflammation. CCl4 was used in a single dose of 0.5mL/kg intraperitoneally to cause hepatic disorder. Aeromonas hydrophila inoculum was used to induce aerocystitis. Dexamethasone was administered intramuscularly at the dose of 2mg/kg b. w. The results revealed a higher serum aspartate transaminase (AST) activity associated with greater somatic liver alteration, being these findings inversely proportional to the cellular accumulation in the inflammatory focus, demonstrating a lower number of inflammatory cells in the animals affected with a higher degree of hepatic disorders induced by CCl4. The histopathological study revealed transient degenerative changes in the most acute phase, as livers of tilapia showed accumulation of lipids in hepatocytes 6 hours after administration of CCl4, and this fatty degeneration was no longer observed in 24 and 48h. However, administration of CCl4 in Nile tilapia resulted in acute and transient liver degeneration, characterized by accumulation of fat in hepatocytes, increased AST in the blood and hepatomegaly. With liver dysfunction there was compromise of cellular recruitment in infectious aerocystitis, indicating that there is liver involvement in the innate immune response in tilapia.
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- 2018
7. Study of therapeutic effectiveness, clinical and ecotoxicological safety of phosphymicine, in the treatment of aeromonosis and streptococosis in tilapia (Oreochromis niloticus)
- Author
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Barbuio, Roberto [UNESP], Universidade Estadual Paulista (Unesp), Belo, Marco Antonio de Andrade [UNESP], and Cruz, Claudinei da [UNESP]
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Histopatologia ,Aeromonas sp ,Histopathology ,Antimicrobial ,Streptococcus sp ,Antimicrobiano - Abstract
Submitted by ROBERTO BARBUIO null (betovet04@yahoo.com.br) on 2017-03-15T20:50:06Z No. of bitstreams: 1 Tese_Impressão.pdf: 5747085 bytes, checksum: 44640c49804bd5ee26aa62e073f632cb (MD5) Rejected by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo a orientação abaixo: O arquivo submetido não contém o certificado de aprovação e sem a ficha catalográfica Corrija esta informação e realize uma nova submissão com o arquivo correto. Agradecemos a compreensão on 2017-03-22T18:45:39Z (GMT) Submitted by ROBERTO BARBUIO null (betovet04@yahoo.com.br) on 2017-03-24T10:47:26Z No. of bitstreams: 1 Tese_Repositório.pdf: 5775415 bytes, checksum: 3929af2d433105226ce33d7ff9410f6a (MD5) Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-03-24T16:47:55Z (GMT) No. of bitstreams: 1 barbuio_r_dr_jabo_par.pdf: 912025 bytes, checksum: f4dd9dbcf267c756f48ebaef7e3c3a7f (MD5) Made available in DSpace on 2017-03-24T16:47:55Z (GMT). No. of bitstreams: 1 barbuio_r_dr_jabo_par.pdf: 912025 bytes, checksum: f4dd9dbcf267c756f48ebaef7e3c3a7f (MD5) Previous issue date: 2017-02-03 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) O presente estudo teve por objetivos avaliar a eficácia terapêutica a segurança clínica e ecotoxicológica do antimicrobiano fosfomicina para o tratamento de aeromonose e streptococose em tilápia do Nilo (Oreochromis niloticus). Para tal, a segurança clínica foi avaliada com as doses de 10, 20 e 40 mg de fosfomicina.kg-1; os estudos de eficácia com a dose terapêutica de 10 mg de fosfomicina.kg-1, foram conduzidos com peixes desafiados com Aeromonas hydrophila e Streptococcus agalactiae; os ensaios de ecotoxicidade foram feitos para a determinação de CL50 em peixes (O. niloticus) e plantas aquáticas (Lemna minor) e de CE50 para crustáceos (Daphnia magna) e moluscos (Pomacea canaliculata). Nos estudos foram utilizadas tilápias de 112g ± 5,6g, acondicionadas em tanques de 400 L (n=10). Ambos os estudos de eficácia terapêutica com 10 mg.kg-1 demonstraram a eficácia para A. hydrophila e S. agalactiae, pois nas análises de reisolamento destes microrganismos não ocorreu crescimento dos mesmos em amostras de fígado, rim, baço e cérebro dos peixes tratados quando comparados aos grupos infectados e não tratados nos quais o número de unidades formadoras de colônias (UFC) foi de 7,6 ± 2,4 por placa. Na infecção por A. hydrophila apresentaram microcitose e linfopenia, assim como, trombocitose na fase inicial da infecção seguida de trombocitopenia. Lesões nos tecidos hepáticos e renais corroboraram as alterações da atividade enzimática sérica de ALT, AST, FA e nos níveis de creatinina, colesterol e triglicerídeos. Na infecção por S. agalactiae apresentaram diminuição do número de eritrócitos e dos valores percentuais de hematócrito, caracterizando quadro de hemólise, associado à linfopenia, trombocitopenia e neutrofilia na fase inicial da infecção. Verificou-se correlação entre as lesões nos tecidos hepáticos e renais aos valores séricos de ALT, AST, FA e nos níveis de creatinina. Nos ensaios ecotoxicológicos para peixe (O. niloticus), molusco (P. canaliculata), microcrustáceo (D. magna) e macrófitas (L. minor e A. caroliniana), os resultados demonstraram segurança ecotoxicológica da fosfomicina sendo considerada praticamente não tóxica para estes organismos (CL e CE50 > 100,0 mg.L-1). A formulação Fosfomicin C® atenuou as alterações patológicas em peixes infectados quando comparado aos não infectados. Porém essa mesma formulação causou alterações no estudo de segurança clínica. Os estudos demonstram a viabilidade do uso da fosfomicina na dose 10 mg.kg-1 para basal da estreptococose e aeromonose na tilapicultura, porém existe a necessidade de testar o antibiótico puro, para verificar se as alterações observadas foram causadas pelo antibiótico ou por algum outro componente. The present study aimed to evaluate the therapeutic efficacy of clinical and ecotoxicological safety of antimicrobial fosfomycin for the treatment of aeromonose and streptococcosis in Nile tilapia (Oreochromis niloticus). For this, clinical safety was evaluated with doses of 10, 20 and 40 mg of fosfomycin.kg-1; Efficacy studies with the therapeutic dose of 10 mg of fosfomycin.kg-1 were conducted with fish challenged with Aeromonas hydrophila and Streptococcus agalactiae; The ecotoxicity assays were performed for the determination of LC50 in fish (O. niloticus) and aquatic plants (Lemna minor) and EC50 for crustaceans (Daphnia magna) and molluscs (Pomacea canaliculata). In the studies, tilapia of 112 g ± 5.6 g were used, packed in 400 L tanks (n = 10). Both therapeutic efficacy studies with 10 mg.kg-1 demonstrated efficacy for A. hydrophila and S. agalactiae, because in the reisolation analyzes of these microorganisms there was no growth in liver, kidney, spleen and brain samples of treated fish , While in the infected and untreated groups, mean growth was greater than ten colony forming units (CFU) per plaque. In the A. hydrophila infection they presented microcytosis and lymphopenia, as well as thrombocytosis in the initial phase of infection followed by thrombocytopenia. Liver and renal tissue damage corroborated the changes in serum enzyme activity of ALT, AST, FA and creatinine, cholesterol and triglyceride levels. In S. agalactiae infection, there was a decrease in the number of erythrocytes and percentage values of hematocrit, characterizing hemolysis, associated with lymphopenia, thrombocytopenia and neutrophilia in the initial phase of infection. There was a correlation between hepatic and renal tissue damage in serum ALT, AST, AF, and creatinine levels. In the ecotoxicological assays for fish (O. niloticus), mollusc (P. canaliculata), microcrustaceans (D. magna) and macrophytes (L. minor and A. caroliniana), the results demonstrated ecotoxicological safety of fosfomycin being considered practically non-toxic for these Organisms (CL and EC 50> 100.0 mg.L-1). The Fosfomicin C® formulation attenuated pathological changes in infected fish compared to uninfected fish. However, the same formulation caused changes in the clinical safety study. The studies demonstrate the feasibility of using fosfomycin at a dose of 10 mg.kg-1 for streptococcal and aeromonose control in tilapicultura, but there is a need to test the pure antibiotic to verify if the observed changes were caused by the antibiotic or some other component. FAPESP: 2013/11675-9
- Published
- 2017
8. Insulin favors acute inflammatory reaction in alloxan-diabetic tilapia during infectious aerocystitis
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Prado, Ed Johnny R., primary, Belo, Marco Antonio A., additional, Moraes, Alessandra C., additional, Barbuio, Roberto, additional, Foz, Elizabeth P., additional, Faria, Vanessa P., additional, and Sebastião, Fernanda A., additional
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- 2018
- Full Text
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9. Produtividade de mandioca avaliada sobre adubação fosfatada e a adubação de cobertura
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Lima, Alandionys Gonçalves de, primary, Carvalho, Lucas Roberto de, additional, Mota, Marília Constantino, additional, Lima Junior, Antônio Florentino de, additional, Moreira, Juracy Mendes, additional, Silva, Arinaldo Pereira da, additional, Barbuio, Roberto, additional, and Rosa, Juliano Queiroz Santana, additional
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- 2018
- Full Text
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10. Esteatose hepática altera acúmulo celular em tilápias do Nilo durante aerocistite infecciosa
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Moraes, Alessandra C., primary, Prado, Ed J.R., additional, Foz, Elizabeth P., additional, Barbuio, Roberto, additional, Faria, Vanessa P., additional, and Belo, Marco A.A., additional
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- 2018
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11. Desenvolvimento de mudas de alface em função de substratos alternativos
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Morais, Igor Batista, primary, Fernandes, Cleiton Miguel, additional, Carvalho, Lucas Roberto de, additional, Lima Junior, Antônio Florentino de, additional, Moreira, Juracy Mendes Moreira, additional, Silva, Arinaldo Pereira da, additional, Barbuio, Roberto, additional, and Rosa, Juliano Queiroz Santana, additional
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- 2018
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12. Hematologia e histopatologia de tilápias (Oreochromis niloticus) vacinadas e desafiadas com Aeromonas hydrophila e Streptoccocus agalactiae
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Barbuio, Roberto [UNESP], Universidade Estadual Paulista (Unesp), Junior, Oswaldo Durival Rossi [UNESP], and Cruz, Claudinei da [UNESP]
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Vacinação ,Fishes ,Tilapia (Peixe) ,Aeromonas ,Bacterioses ,Estreptococo - Abstract
Made available in DSpace on 2014-06-11T19:27:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-27Bitstream added on 2014-06-13T20:56:03Z : No. of bitstreams: 1 barbuio_r_me_jabo.pdf: 356013 bytes, checksum: 21a3483e6b33a8f8dbad2f27d9a65cbb (MD5) A intensificação dos sistemas aquicolas tem contribuído para o aumento da ocorrência das doenças infecciosas. Assim, o objetivo deste estudo foi analisar as alterações hematológicas e histopatológicas de tilápias (Oreochromis niloticus) vacinadas e desafiadas com Aeromonas hydrophila e Streptococcus agalactiae. Para tanto, peixes com pelo menos 15 gramas foram vacinados com 0,05 mL por peixe, na cavidade celomática entre as nadadeiras ventrais e foram mantidos por 21 dias para o desenvolvimento da imunidade. A indução da infecção foi realizada em períodos diferentes para cada bactéria, sendo após a vacinação, com 60 dias para Aeromonas hydrophila e 90 dias para Streptococcus agalactiae, com as respectivas concentrações de DL50. Após sete dias da inoculação foram coletados, de forma asséptica, fígado, rim, baço e cérebro dos peixes, a realização das provas bioquímicas e confirmação da presença das bactérias Aeromonas sp. e Streptococcus sp. e coleta do sangue para a contagem total dos leucócitos e trombócitos e diferencial dos leucócitos, da série vermelha foram analisados hematócrito, eritrócitos, VCM (Volume Corpuscular Médio), HCM (Hemoglobina Corpuscular Média) e CHCM (Concentração Hemoglobina Corpuscular Média), além dos testes bioquímicos de proteína total (PPT), colesterol, albumina, uréia, triglicérides, lactato e glicose e também foi realizado o reisolamento das bactérias. Ao término do período experimental ocorreram aumento nas variáveis hematológicas e bioquímicos do CHCM, globulinas e colesterol e a diminuição no hematócrito, VCM, leucócitos e lactato de tilápias infectadas por S. agalactiae e aumento nos parâmetros de leucócitos, globulinas e a diminuição dos trombócitos e colesterol de tilápias infectadas por A. hydrophila além de alterações histopatológicas em... The intensification of aquaculture systems has contributed to the increased occurrence of infectious diseases. The objective of this study was to analyze the hematological and histopathological tilapia (Oreochromis niloticus) vaccinated and challenged with Aeromonas hydrophila and Streptococcus agalactiae To that end, with at least 15 fish were vaccinated with 0.05 grams mL per fish in between the coelomic cavity and ventral fins were maintained for 21 days for development of immunity. Induction of Infection was performed at different times for each bacteria, which after vaccination, 60 days and 90 days A. hydrophila to S. agalactiae, with respective concentrations of LD50. After seven days of inoculation were collected aseptically, liver, kidney, spleen and brain of fish carrying out the biochemical and confirmation of the presence of the bacteria Aeromonas sp. and Streptococcus sp. and blood collection for the total count of leukocytes and thrombocytes and differential leukocytes, red series were analyzed hematocrit, erythrocytes, MCV (Mean Corpuscular Volume) , MCH (Mean Corpuscular Hemoglobin) and MCHC (Mean Corpuscular Hemoglobin Concentration), in addition to biochemical assays of total protein (PPT), cholesterol, albumin, urea, triglycerides, and glucose and lactate was also performed reisolation of bacteria. At the end of the experimental period there was an increase in haematological and biochemical variables of MCHC, globulin and cholesterol and decrease in hematocrit, MCV and lactate tilapia infected with S. agalactiae and an increase in leukocyte parameters, globulin and the decrease of platelets and cholesterol tilapia infected with A. hydrophila as well as histopathological changes in skin, liver and kidney of... (Complete abstract click electronic access below)
- Published
- 2013
13. ATIVIDADE RESPIRATÓRIA DOS LEUCÓCITOS EM TILÁPIAS INOCULADAS COM AEROMONAS HYDROPHILA E TRATADAS COM PROMETAZINA.
- Author
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DA SILVA HRUSCHKA, SIMONE CRISTINA, COSTA OCTAVIANO, PRISCILA, DE OLIVEIRA, MELQUE FERRARI, DE FARIA, VANESSA PAVESI, BARBUIO, ROBERTO, and DE BELO, MARCO ANTONIO ANDRADE
- Abstract
Copyright of Archives of Veterinary Science is the property of Archives of Veterinary Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
14. Histopathological biomarkers in pacu (Piaractus mesopotamicus) infected with aeromonas hydrophila and treated with antibiotics.
- Author
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Carraschi SP, da Cruz C, Machado Neto JG, Ignácio NF, Barbuio R, and Machado MR
- Subjects
- Aeromonas hydrophila physiology, Animals, Anti-Bacterial Agents pharmacology, Biomarkers analysis, Gills microbiology, Gills pathology, Gram-Negative Bacterial Infections pathology, Liver drug effects, Liver pathology, Skin drug effects, Skin pathology, Thiamphenicol analogs & derivatives, Thiamphenicol pharmacology, Anti-Bacterial Agents therapeutic use, Characidae physiology, Fish Diseases pathology, Gram-Negative Bacterial Infections veterinary
- Abstract
Pharmacochemicals usage in fish farming disease treatment can cause morphological and functional changes in absorption capacity, metabolism and excretion organs. The aim of this research was to evaluate the histopathological biomarkers in the gills, liver, kidney and skin of pacu (P. mesopotamicus), which have been infected with A. hydrophila and treated with oxytetracycline (OTC) and florfenicol (FFC). Fish were exposed to 2.4×10(7) mL(-1) of A. hydrophila bacteria experimental infection and after 24h exposed to FFC treatment for ten days and OTC for seven days. OTC was not effective in the A. hydrophila control in pacu in up to 170.0 mg kg(-1) concentration. Nevertheless, FFC was 100% effective with 10.0 mg kg(-1) concentration. After the treatment, skin, gills, liver and kidney samples were collected and processed for histopathological analysis. A. hydrophila caused lamellar fusion, sub epithelial edema, mucous hypertrophy and hyperplasia, lining, pillar and chloride cells. Hepatocytes hypertrophy was observed on liver, as a result of the antibiotics metabolism and bacteria cell wall. The histopathological biomarkers show the effects of the presence of the A. hydrophila. The use of the antibiotic florfenicol decreases the bacterial action effectiveness on tissues evaluated. Thus, the histopathological biomarkers show the A. hydrophila effect and the antibiotics treatment. The skin and liver are exposure biomarkers for both., (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Published
- 2012
- Full Text
- View/download PDF
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