Consulta: subjectFacets:"Mycoplasma gallisepticum"
Registros recuperados: 13
Data/hora: 01/06/2024 17:58:28

Detection of Mycoplasma gallisepticum in dead captive psittacines in Belo Horizonte, Brazil
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Gomes,AM; Costa,LL; Vilela,DAR; Marques,MVR; Carvalhaes,AG; Marin,SY; Costa,MP; Horta,RS; Resende,JS; Martins,NRS.
Mycoplasma gallisepticum (Mg) infection of wild native Brazilian psittacines (Psittaciformes) which died of any cause during sorting, rehabilitation, or conservation, was investigated by PCR. Two previously described PCR methodologies using Mg specific primers were employed for the analyses of 140 swab samples (cloaca, trachea, or palatine cleft). Average positive Mg detection in cloacal swabs was 51.9%, with 80.0% (n=5) of Blue-and-yellow Macaws (Ara ararauna), 60.0% (n=3) Dusky Parrots (Pionus fuscus), 52.5% (n=59) Amazon Parrots (Amazona aestiva), 50.0% (n=2) Orange-winged Parrots (Amazona amazonica), 50.0% (n=2) Jandaya Parakeetsor Jandaya Conures (Aratinga jandaya), 0% (n=2) Golden Conures or Golden Parakeets (Guarouba guarouba), and 0% (n=2) Hyacinth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazona aestiva; Amazona amazonica; Anodorhynchus hyacinthinus; Aratinga jandaya; Brazilian psittacine fauna; Guarouba guarouba; Mycoplasma gallisepticum; PCR; Pionus fuscus; Psittaciformes; Psittacidae.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200001

Experimental Coinfection of Chicken Anemia Virus and Mycoplasma gallisepticum Vaccine Strains in Broiler Chicks
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Prezotto,CF; Marin,SY; Araújo,TS; Barbosa,FO; Barrios,PR; Gomes,AM; Peconick,AP; Resende,M; Sousa,RV; Martins,NRS.
ABSTRACT This study aimed at determining the clinical and pathological effects of the coinfection of young SPF chickens with chicken anemia virus (CAV) and Mycoplasma gallisepticum (MG) vaccine strains. The clinical signs, gross and microscopic lesions were determined after the experimental coinfection broilers with a CAV genotype 1 vaccine strain given intraperitoneally on the first day of age and a MG F-strain vaccine given intranasally on the 8th day of age. The experimental groups included the negative control (group 1), a group infected with the MG F-strain vaccine (group 2), and a group coinfected with CAV and MG vaccines (group 3). Chicks were examined clinically and post mortem at 23 days of age, and gross and microscopic lesions of the trachea,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Chicken anemia virus; CAV; Mycoplasma gallisepticum; Coinfection.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300475

Characterization and Differentiation of Chicken Mycoplasma Isolates Using 16S-23S Intergenic Spacer Region Sequencing
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Santos,FF; Li,J; Brandão,MDM; Machado,LS; Soares,NM; Nascimento,ER; Khan,MI; Pereira,VLA.
ABSTRACT The objective of this study was to identify the species and characterize the genetic relationships among mycoplasma isolates from commercial layer hen flocks using 16S-23S rDNA intergenic spacer region (IGSR) sequencing. Twenty-one isolates were obtained from samples collected from commercial layer flocks in four Brazilian states: São Paulo, Minas Gerais, Rio de Janeiro and Espírito Santo. The isolates were recovered from the São Paulo, Rio de Janeiro and Espírito Santo states. Eleven isolates were originated from tracheal swabs, five from shell gland swabs and five from ovary fragment collection. The 16S-23S rDNA IGSR of isolates were amplified by PCR, and the obtained products were subsequently sequenced. The consensus of each isolate was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma gallinaceum; Mycoplasma pullorum; Mycoplasma gallisepticum; Intergenic spacer region; 16S-23S.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200309

Seroprevalence of Salmonella and Mycoplasma in commercial broilers, backyard chickens, and spent hens in the region of Triângulo Mineiro, State of Minas Gerais, Brazil
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Silva,CBC; Chagas,WF; Santos,RF; Gomes,LR; Ganda,MR; Lima,AMC.
Avian salmonellosis and mycoplasmosis are infectious diseases that, in addition of causing lack of flock uniformity, represent a hazard to human health. The objective of the present study was to evaluate the seroprevalence of mycoplasmosis and salmonellosis in commercial broilers, backyard chickens, and spent hens slaughtered at a processing plant with local health inspection in Uberlândia, MG, Brazil. A total of 210 samples were randomly collected at the time of bleeding. Samples were submitted to rapid plate serum agglutination test (RSA) for the classification of Salmonella pullorum, Salmonella gallinarum, Mycoplasma gallisepticum and Mycoplasma synoviae. In order to increase result specificity, mycoplasmosis-positive samples were submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella pullorum; Salmonella gallinarum; Mycoplasma gallisepticum; Mycoplasma synoviae; Gallus gallus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100057

Comparison of Mycoplasma gallisepticum Infection in Different Samples and Ages of Chicken Breeder Flocks
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Demirbilek,SK; Ardicli,Ö; Carli,KT.
ABSTRACT This study aimed to compare method-based and newly developed sample-based methods for Mycoplasma gallisepticum (MG) detection in different samples of breeder flocks suffering from respiratory disease problems by using culture, real-time PCR (rPCR) and ELISA from chicks and embryonated eggs. Overall, 450 samples of 19-day-old chicken embryo’s trachea, 450 samples of 8-day-old chicken tracheal swabs and 900 blood samples of 20-, 27-, 34-, 40- and 46-week-old breeder chickens from 5 flocks were sampled for 26 weeks, and were all tested for MG by culture, MG-rPCR and MG-ELISA. Culturing assays and rPCR were applied to 450 mixture samples from 19-day-old chicken embryo’s trachea and 450 tracheal swab samples (each pooled into groups of 3) from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culture; Egg yolk; Mycoplasma gallisepticum; Real-time PCR; Tracheal swab.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200320

SURVEILLANCE FOR NEWCASTLE DISEASE VIRUS, AVIAN INFLUENZA VIRUS AND MYCOPLASMA GALLISEPTICUM IN WILD BIRDS NEAR COMMERCIAL POULTRY FARMS SURROUNDED BY ATLANTIC RAINFOREST REMNANTS, SOUTHEASTERN BRAZIL
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Guimarães,MB; Hurtado,R; Bello,CP; Vanstreels,RET; Ferreira,AJP.
ABSTRACT The geographic overlap between areas of Atlantic rainforest and human activities allows interactions to occur between humans and wild and domestic animals. Despite the great importance of the domestic animal-wildlife-human interface that occurs at poultry farms in terms of public health, economic production and wildlife conservation, there are few studies in Brazil examining the distribution and health of wild birds that interact with poultry farms. From January to December 2010, mist nets were used to capture 166 free-ranging birds that were within close proximity to three poultry farms in Atlantic rainforest remnants in south-eastern Brazil. The species composition was examined, and molecular methods were used to test for avian influenza virus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Surveillance; Atlantic rainforest; Poultry farms; Wild birds; Influenza virus; Newcastle disease virus; Mycoplasma gallisepticum.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300387

EXPRESIÓN in vitro EN Escherichia coli, DE UN FRAGMENTO DEL GEN vlhA.5.02 DE LA PRINCIPAL FAMILIA DE HEMAGLUTININAS DE Mycoplasma gallisepticum
Provedor de dados: Revista de Salud Animal
Autores: Agüero,J.A; Hotzel,H; Aguilar,Lisandra; Lima,Claudia; Sachse,K; Martínez,Siomara.
Mycoplasma gallisepticum es el agente etiológico fundamental del síndrome respiratorio crónico de los pollos; constituye el micoplasma más importante desde el punto de vista económico para la avicultura. Un fragmento de ADN de aproximadamente 800pb de este microorganismo, amplificado mediante la reacción en cadena de la polimerasa a partir del plásmido pTTQ18 recombinante, se clonó en el vector de expresión pQE-32. El polipéptido se expresó fusionado a una secuencia de seis histidinas, por lo que la talla final fue de 31kDa, y se detectó mediante inmunotransferencia con un antisuero policlonal contra M. gallisepticum y con un anticuerpo monoclonal contra histidina. El polipéptido se purificó mediante cromatografía de afinidad con quelatos metálicos...
Tipo: Journal article
Palavras-chave: Mycoplasma gallisepticum; Clonaje; Expresión; Purificación; PCR; Cromatografía de afinidad por quelatos metálicos níquel-ácido nitrilotriacético (Ni-NTA).
Ano: 2011
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2011000100005

Influence of culture medium components on Mycoplasma gallisepticum growth
Provedor de dados: Revista de Salud Animal
Autores: Pérez Bueno,Tania; Sánchez Miranda,Lilian; Rosado Ruiz-Apodaca,Ileana; Díaz Bravo,Tito; Rodríguez Edreira,Mercedes; Martínez Marrero,Siomara.
The composition of a culture medium produced in Cuba to grow Mycoplasma gallisepticum was evaluated using a response surface methodology. Initially, the influence of Mycoplasma base, horse serum and yeast extract on biomass production was assessed in a 2³ factorial experimental design. Then, a central composite design was applied. Mycoplasma base and horse serum factors were selected for this study. In 7 L and 35 L bioreactors, the variations carried out in the culture medium composition were estimated. The experimental results were fitted to a second order polynomial model equation. Finally, the optimal growth conditions established were at concentrations of 1,88% Mycoplasma base and 18,16% horse serum (v/v) with 0,6% of yeast extract. For the conditions...
Tipo: Journal article
Palavras-chave: Culture medium optimization; Mycoplasma gallisepticum; Statistical experimental design.
Ano: 2014
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2014000200009

Molecular cloning and expression of a computationally predicted surface antigen of Mycoplasma gallisepticum
Provedor de dados: Revista de Salud Animal
Autores: Agüero,José Antonio; Aguilar-Bultet,Lisandra; Rodríguez,Ariadna.
Mycoplasmas, the simplest self-replicating organisms known, are distinguished phenotypically from other bacteria by their minute size and total lack of cell wall. The poultry industry is affected by several species of mycoplasmas, but Mycoplasma gallisepticum (MG) is the most economically significant one. The attachment of mycoplasmas to host respiratory epithelial cells constitutes a critical step in the pathway leading to infection and disease and is achieved by lipoproteins localized on the bacterial surface. In a recent in silico study, it was predicted a set of MG putative surface proteins with potential antigenic properties that could be used as candidates for exploring new vaccines, and for diagnostic tests as well. One of those potential candidates...
Tipo: Journal article
Palavras-chave: Mycoplasma gallisepticum; Surface protein; Recombinant protein; IMAC purification.
Ano: 2015
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2015000100004

DETECCIÓN Y DIFERENCIACIÓN DE Mycoplasma gallisepticum Y Mycoplasma synoviae MEDIANTE LA TÉCNICA DE PCR A PARTIR DE HISOPOS TRAQUEALES DE AVES CON SÍNTOMAS RESPIRATORIOS
Provedor de dados: Acta Biológica Colombiana
Autores: VENTURA,CESAR E; RAMÍREZ,GLORIA; VERA,VÍCTOR.
Los micoplasmas son importantes patógenos en las aves por ser responsables de cuadros respiratorios que ocasionan grandes pérdidas económicas a la industria avícola alrededor del mundo. Existen principalmente dos especies de micoplasmas como causantes de enfermedad en aves comerciales, el Mycoplasma gallisepticum(MG) y el Mycoplasma synoviae(MS). Teniendo en cuenta su importancia y la necesidad de conocer y diferenciar las diferentes especies de micoplasmas presentes en las explotaciones avícolas, se tomaron 91 muestras de hisopos traqueales de aves con síntomas respiratorios, provenientes de igual número de granjas de pollo de engorde, ponedoras comerciales y reproductoras pesadas ubicadas en los departamentos de Cundinamarca y Boyacá, Colombia, y se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma gallisepticum; Mycoplasma synoviae; PCR.
Ano: 2012
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2012000300005

A Multiplex real-time PCR for detection of Mycoplasma gallisepticum and Mycoplasma synoviae in clinical samples from Brazilian commercial poultry flocks
Provedor de dados: Brazilian Journal of Microbiology
Autores: Fraga,Aline Padilha; Vargas,Tatiana de; Ikuta,Nilo; Fonseca,André Salvador Kazantzi; Celmer,Álvaro José; Marques,Edmundo Kanan; Lunge,Vagner Ricardo.
Mycoplasma gallisepticum (MS) and Mycoplasma synoviae (MS) are important avian pathogens and cause economic losses to the poultry industry. Molecular biology techniques are currently used for a rapid detection of these pathogens and the adoption of control measures of the diseases. The aim of this study was to develop and validate a technique for simultaneous detection of MG and MS by multiplex real time polymerase chain reaction (PCR). The complete assay (Multiplex MGMS) was designed with primers and probes specific for each pathogen and developed to be carried out in a single tube reaction. Vaccines, MG and MS isolates and DNA from other Mycoplasma species were used for the development and validation of the method. Further, 78 pooled clinical samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Real-time PCR; Mycoplasma gallisepticum; Mycoplasma synoviae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200028

Phenotypic and antigenic variation of Mycoplasma Gallisepticum vaccine strains
Provedor de dados: Brazilian Journal of Microbiology
Autores: Ferraz,Priscila N.; Danelli,Maria das Graças M.
Phenotypic and antigenic variations among Mycoplasma gallisepticum vaccine F and Ts-11 strains were investigated by SDS-PAGE and serological methods (hemagglutination-inhibition and immunoblot assays). The SDS-PAGE system followed by densitometer analysis showed weak phenotypic variability between the strains, being the major difference close to the 75 kDa level where a prominent peptide band was detected only in the F vaccine strain. Polyclonal antibodies to the M. gallisepticum antigens produced in chickens were used in serological tests for this antigenic variability study. There were strong cross-reactions between the strains and homologous/ heterologous antibodies. The most evident characteristic was the specific response of the vaccine-type F...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma gallisepticum; Phenotypic variation; Antigenic variation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300011

Protein profile analysis by SDS-PAGE of Mycoplasma Gallisepticum strains S6(208) and F-K810 grown in Hayflick's and Frey's media
Provedor de dados: Brazilian Journal of Microbiology
Autores: Ferraz,Priscila N.; Menezes,Claudio C. P.; Danelli,Maria das Graças M.; Lizeu,Jackeline de O. P.; Nascimento,Elmiro R. do; Lucchesi,Daniela M.
The Mycoplasma gallisepticum strains [wild-type S6 (208) and a vaccine-type F-K810] grown in Frey´s and Hayflick´s media were analyzed by SDS-PAGE. No visual changes in the protein profiles of these strains were observed regardless of the media composition used, although the polyacrylamide gel electrophoretograms showed minor differences do exist when densitometer traces of the gel are compared. Both strains were easily differentiated on SDS-PAGE analysis by a peptide band p75, that is specific for MG F-K810 strain, used as vaccine.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Mycoplasma gallisepticum; SDS-PAGE; Protein profile.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200010