Academic literature on the topic 'Streptoccus equi'

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Journal articles on the topic "Streptoccus equi"

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Ivens, Philip A. S., and Scott Pirie. "Streptococcus equi subspecies equi diagnosis." Equine Veterinary Journal 53, no. 1 (August 9, 2020): 15–17. http://dx.doi.org/10.1111/evj.13319.

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Taylor, Sandra D., and W. David Wilson. "Streptococcus equi subsp. equi (Strangles) Infection." Clinical Techniques in Equine Practice 5, no. 3 (September 2006): 211–17. http://dx.doi.org/10.1053/j.ctep.2006.03.016.

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van Samkar, A., M. C. Brouwer, A. van der Ende, and D. van de Beek. "Streptococcus equi meningitis." Clinical Microbiology and Infection 22, no. 1 (January 2016): e3-e4. http://dx.doi.org/10.1016/j.cmi.2015.09.003.

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Mallicote, Martha. "Update on Streptococcus equi subsp equi Infections." Veterinary Clinics of North America: Equine Practice 31, no. 1 (April 2015): 27–41. http://dx.doi.org/10.1016/j.cveq.2014.11.003.

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Javed, R., A. K. Taku, Rakhi Gangil, and R. K. Sharma. "Molecular characterization of virulence genes of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in equines." Veterinary World 9, no. 8 (August 2016): 875–81. http://dx.doi.org/10.14202/vetworld.2016.875-881.

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Båverud, V., S. K. Johansson, and A. Aspan. "Real-time PCR for detection and differentiation of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus." Veterinary Microbiology 124, no. 3-4 (October 2007): 219–29. http://dx.doi.org/10.1016/j.vetmic.2007.04.020.

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Lee, Hayoung, Sung Ho Yun, Ju-yong Hyon, Sang-Yeop Lee, Yoon-Sun Yi, Chi-Won Choi, Sangmi Jun, Edmond Changkyun Park, and Seung Il Kim. "Streptococcus equi-derived extracellular vesicles as a vaccine candidate against Streptococcus equi infection." Veterinary Microbiology 259 (August 2021): 109165. http://dx.doi.org/10.1016/j.vetmic.2021.109165.

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Steward, K. F., C. Robinson, D. J. Maskell, M. T. G. Holden, S. R. Harris, A. C. Darby, and A. S. Waller. "Pili of Streptococcus equi and Streptococcus zooepidemicus." Journal of Equine Veterinary Science 32, no. 10 (October 2012): S15. http://dx.doi.org/10.1016/j.jevs.2012.08.039.

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Mahmood, S. H. "Molecular Identification of Streptococcus equi subspecies equi in Horses." Iraqi Journal of Veterinary Medicine 38, no. 2 (December 28, 2014): 1–8. http://dx.doi.org/10.30539/iraqijvm.v38i2.215.

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The objective of this study to evaluate the existence of Streptococcus equi subspecies equi as probable agents of naturally occurring infection of the equine upper respiratory disease from the Equestrian club in Baghdad city. Nasal swabs and pus samples from 141 horses with upper respiratory tract infections were collected. Results indicated that different microorganisms were isolated and identified S. equi subsp equi (30 isolates), S. equi subsp zooepidemicus (14 isolates), S. equisimilus (9 isolates), Enterococcus. fecalis (17 isolates), Pasteurella spp. (29 isolates), Staphylococcus spp. (25 isolates), Bacillus spp. (24 isolates), Pseudomonas spp.(16 isolates), and E. coli (21 isolates). All 30 isolates of S. equi was characterized by biochemical tests. For molecular identification of the subspecies S. equi one genomic region SeM was amplified.
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Bustos, Carla P., Alejandra J. Muñoz, and Nora Guida. "Capsule expression in isolates of Streptococcus equi subsp. equi." Revista Argentina de Microbiología 47, no. 4 (October 2015): 380–81. http://dx.doi.org/10.1016/j.ram.2015.07.005.

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Dissertations / Theses on the topic "Streptoccus equi"

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Steward, Karen Frances. "Comparative genomics of Streptococcus equi and Streptococcus zooepidemicus." Thesis, University of Cambridge, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708551.

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Maciel, Liana Flores. "Desenvolvimento de vacina recombinante de proteína M de Streptococcus equi subsp. equi." Universidade Federal de Pelotas, 2012. http://repositorio.ufpel.edu.br/handle/ri/1199.

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The business related to equines in Brazil has an important participation in activities as leisure, culture and tourism, being responsible for millions of jobs. The equine distemper caused by Streptococcus equi subsp. equi is a disease of the respiratory tract with economical impact, generating losses with treatment and reduction in the animal performance. To solve this problem, prophylactic measures, such as the vaccination, are important. However, available commercial vaccines do not offer protection to more than 50% of the vaccinated animals. Several studies are being performed aiming the achievement of an efficient vaccine against the Adenitis, where several virulence factors are being evaluated as possible vaccine antigens, specially the M protein (SeM). Thus, the present work aimed the development and evaluation of a recombinant vaccine to the control of the equine distemper composed of the SeM antigen co-administrated with the recombinant Heat-labile enterotoxin B subunit of Escherichia coli (rLTB) and/or aluminium hydroxide (Al(OH)3). A total of 72 female BALB/c mice, divided into eight groups and 18 horses, divided into six groups, were inoculated by intramuscular or intranasal routes. The results obtained in the experiments showed that the rSeM was innocuous and immunogenic in both evaluated species, stimulating the production of specific immunoglobulin anti-rSeM without the addition of immunological adjuvant. Both adjuvant rLTB and Al(OH)3 were not capable to increase the titer of immunoglobulin anti-rSeM in mice, while in horses, the treatment rSeM + rLTB (IM) showed a significant increase in the level of seric immunoglobulin IgG anti-rSeM. Interestingly, the production of anti-rSeM secretory IgA in the upper respiratory tract has a significant increase in horses treated with rSeM + Al(OH)3 (IM). This result is promising to further studies with rSeM as an antigen for vaccines, as well as is the administration of rLTB as an immunological adjuvant.
A equinocultura no Brasil ganha espaço em setores ligados ao lazer, cultura e turismo, sendo responsável por milhões de empregos. A Adenite Equina causada pelo Streptococcus equi subsp. equi é uma doença do aparelho respiratório de elevado impacto econômico, gerando gastos com mão-de-obra e perda de desempenho dos animais. Para amenizar este problema, medidas profiláticas são importantes, como por exemplo, a vacinação. Porém, as vacinas disponíveis no mercado protegem apenas 50% dos animais. Vários estudos vêm sendo realizados para obtenção de uma vacina mais eficiente contra a Adenite, onde vários fatores de virulência do patógeno estão sendo avaliados como possíveis antígenos vacinais, com destaque para a proteína M de S. equi (SeM). Com base nisso este trabalho objetivou o desenvolvimento e avaliação de uma vacina recombinante para controle da Adenite Equina, utilizando como antígeno a rSeM e como adjuvantes a subunidade B da enterotoxina termolábil de Escherichia coli (rLTB) e ou hidróxido de alumínio (Al(OH)3). Para este estudo foram utilizados 72 camundongos Balb/c fêmeas divididos em 8 grupos e 18 cavalos divididos em 6 grupos, inoculados por via IM ou IN. Os resultados mostraram que a rSeM foi inócua e imunogênica para ambas as espécies avaliadas, estimulando níveis significativos de imunoglobulinas (lgs) anti-rSeM sem a necessidade de uso de qualquer adjuvante imunológico. Os adjuvantes rLTB e Al(OH)3 não foram capazes de incrementar significativamente os títulos de lgs antirSeM em camundongos, enquanto que em cavalos o tratamento rSeM + rLTB (IM) promoveu um aumento significativo no título sérico de IgG anti-rSeM. Interessantemente, a produção de IgA secretória anti-rSeM no trato respiratório superior de cavalos teve aumento significativo no tratamento com rSeM + Al(OH)3 (IM). Estes resultados são promissores para a continuidade de estudos visando a utilização da rSeM como antígeno vacinal. Da mesma forma, o uso da rLTB como adjuvante em vacinas para cavalos parece ser promissor.
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De, Negri Rafaela. "EQUINE SERUM ANTIBODY RESPONSES TO STREPTOCOCCUS EQUI AND STREPTOCOCCUS ZOOEPIDEMICUS." UKnowledge, 2013. http://uknowledge.uky.edu/gluck_etds/13.

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Streptococcus zooepidemicus (Sz) and Streptococcus equi (Se) share 98% DNA sequence homology, but display different pathogenic properties. Infection by one organism does not cross-protect against the other. To better understand pathogenic differences between these organisms and gain information about which proteins are expressed in horses infected experimentally with Se, intrauterine Sz or naturally with respiratory Sz we compared antibody specificities of convalescent sera using ELISA. These comparisons were based on sets of 8 and 14 immunoreactive recombinant proteins of Se strain CF32 and Sz strain NC78, respectively. Sera from donkeys that were previously naturally affected with strangles and later developed Sz pneumonia secondary to an experimental influenza challenge were also included. Serum antibody responses were quantitatively and qualitatively much greater following recovery from strangles than following respiratory Sz infection. Increased reactions to Se proteins IdeE2, Se75.3, Se46.8, Se18.9 and Se42.0 were observed for the majority of strangles sera but not for sera from respiratory Sz infection cases. Reactions of sera from Sz respiratory disease to Sz proteins varied greatly and were mostly to HylC and ScpC. Interestingly, sera of donkey recovered from Sz bronchopneumonia did not show increased antibody reaction to any of the proteins even though these donkeys had also recovered from clinical strangles 6 months previously. Only 1/5 mare with Sz placentitis presented increased serum antibody responses to MAP. In conclusion, adaptive immune responses to Se of horses with strangles are stronger and involve a greater number of proteins than adaptive immune responses to Sz infection of the lower respiratory tract. In an effort to develop an improved vaccine against Se, modified live strain of EHV-1, RacH was constructed to express three recombinant antigens of Se SeM, IdeE and Se18.9. Two groups of 10 and 2 ponies were vaccinated intramuscularly or intranasally, respectively. Another group (n=6) vaccinated with empty RacH served as controls. Sera from 2/3 ponies from each vaccination groups and 1/2 serum from IN vaccinated ponies showed increased serum neutralizing antibodies to EHV-1. ELISA detected no significant increase in antibodies to proteins. Only one IM and IN vaccinated pony showed serum bactericidal activity post vaccination.
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Lannergård, Jonas. "Potentially virulence-related extracellular proteins of Streptococcus equi /." Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200680.pdf.

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Silva, Marta Uva Cansado Gonçalves. "Clínica e cirurgia de equinos." Master's thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/25901.

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Este relatório tem como objetivo a descrição das atividades desenvolvidas durante o estágio curricular do Mestrado Integrado em Medicina Veterinária da Universidade de Évora. A primeira parte consiste numa apresentação da casuística acompanhada, dividida pelas áreas da medicina preventiva, clínica e cirúrgica de equinos, bem como a área da reprodução, descrevendo-se alguns procedimentos ou casos clínicos mais relevantes. A segunda parte consiste numa monografia sobre o tema “Gurma: infeção do trato respiratório superior de equinos por Streptococcus equi subsp. equi”, com foco na deteção e tratamento de portadores crónicos assintomáticos por endoscopia. Por último, desenvolvem-se alguns casos decorrentes de um surto de gurma acompanhado durante o estágio, na região do Alentejo; Abstract: Equine Clinics and Surgery This report is meant to account for the activities developed throughout the internship integrated in the master’s degree in Veterinary Medicine of the University of Évora. The first section consists in a description of the case load performed in the different areas of the equine prophylaxis, clinics and surgery, as well as breeding. When relevant, some procedures or cases are more minutely described. In the second section a monograph on “Strangles: an equine upper respiratory tract infection by Streptococcus equi subsp. equi” is made, focusing on the endoscopic detection and treatment of chronic asymptomatic carriers. Lastly, some relevant cases of a strangles outbreak that occurred during the internship period, in the Alentejo region, are reported.
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Karlström, Åsa. "Collagen-like proteins in horse pathogenic Streptococcus equi /." Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200599.pdf.

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Lindmark, Hans. "Characterization of adhesive extracellular proteins from Streptococcus equi /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5488-3.pdf.

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Libardoni, Felipe. "Equinos portadores de Streptococcus equi subespécie equi: prevalência, fatores de risco e caracterização de alelos seM." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/4105.

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Strangles is considered the main respiratory disease in horses. The etiologic agent is the bacterium Streptococcus equi subsp. equi (S. equi), responsible for approximately 30% of horse diseases worldwide notifications. The clinical signs of strangles are fever, nasal secretion and lymph node enlargement. The last one occurs due the incomplete phagocytosis of S. equi by defense cells because bacterial hyaluronic acid capsule and M protein (SeM). The epidemiology, the risk factors and the strangles control are poorly understood. The 5' end of the seM gene sequence has been used for isolate differentiation by characterization of the alleles. Therefore, this thesis aimed to study the prevalence of Streptococcus equi subsp. equi (S. equi) in healthy horses, the alleles frequency and the risk factors involved on equine adenitis. One thousand and ten nasal swabs were obtained from healthy horses from 341 farms. Twenty four horses were positive for S. equi, confirmed by PCR and DNA sequencing. The prevalence of S. equi per equine was 2.37%, and 20 farms were positive (5.86%). Risk factor analysis showed by confirming and quantifying statistically that: the number of agglomeration events that horses participate (RR: 1.6), the situation with food container shared (RR: 3.74) and the positive diagnosis for adenitis (RR: 3.20) are significant risk factors for Strangles. These results provide important epidemiological contribution to the equine industry and can give support for the disease control. In addition, the 5 'end of the gene seM was amplified by PCR and sequenced and allele characterized. It was found the same allele (SEM-61) in all the samples. These results support the hypothesis of natural selection of alleles apparently more suited to survive, persist and perpetuate in the population studied.
A adenite equina é uma doença infecto-contagiosa que acomete o trato respiratório superior, sendo uma das principais doenças respiratórias de equinos. O agente etiológico dessa enfermidade é o Streptococcus equi subespécie equi (S. equi), responsável por aproximadamente 30% das notificações em todo o mundo. Os principais sinais clínicos da adenite são febre, secreção nasal e enfartamento de linfonodos, que ocorre pela dificuldade de fagocitose do S. equi por células de defesa devido a presença da cápsula de ácido hialurônico e proteína M. O entendimento sobre a epidemiologia, a análise de fatores de risco para adenite equina e o controle dessa enfermidade ainda são limitados. Estudos moleculares demonstram diferenças na extremidade 5 da sequência do gene (seM) codificador da proteína M de S. equi. Esta região do gene já foi utilizada na diferenciação de isolados por meio da caracterização de diferentes alelos. Por tudo isso, essa tese objetivou obter resultados de prevalência, e também análise de fatores de risco para adenite equina através de um desenho experimental para coleta de suabes nasais. Foram obtidos 1.010 suabes nasais de equinos sadios em 341 fazendas, de onde foram identificados 24 equinos positivos para S. equi em isolamento, que posteriormente foram confirmados por PCR e sequenciamento de DNA. A prevalência estimada por equino foi de 2.37%, e 20 fazendas foram consideradas positivas (5.86%). Na análise de fatores de risco, foi comprovado e quantificado estatisticamente que: número de eventos de aglomeração que os equinos participam (RR:1.06), o ato de compartilhar recipiente de alimento (RR:3.74) e ter tido diagnóstico positivo para adenite (RR:3.20) são fatores de risco relevantes para adenite equina. Estes resultados oferecem contribuições epidemiológicas importantes para a indústria de equinos e pode apoiar o controle da doença. Em paralelo, a região 5 terminal do gene seM das 24 amostras positivas foi amplificada por PCR e sequenciada para caracterização de alelos, sendo identificado o mesmo alelo (seM-61) em todas as amostras. Esses resultados evidenciam a hipótese de seleção natural de alelos aparentemente mais adaptados a sobreviver, persistir e se perpetuar na população estudada.
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West, Douglas Anthony. "In vitro analysis of the role of the Streptococcus equi subspecies equi hyaluronic acid capsule in virulence." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616143.

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Freislerová, Eva. "Produkce kyseliny hyaluronové covRS-deficientním kmenem Streptococcus equi subsp. zooepidemicus." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-240561.

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The bacteria of genus Streptococci are among the most significant producers of hyaluronic acid in industrial scale. One of the typical representatives of that group is Streptococcus equi subsp. zooepidemicus. The production of hyaluronic acid in Streptococcus equi subsp. zooepidemicus is heavily influenced by cultivation conditions and by genetic alterations. The present work describes the deletion of genes covR and covS responsible for transcriptional regulation of stress response. According to Galeas a kol. [35] the deletion of these genes in S. pyogenes led to the hyaluronic acid capsule increase. As the S. pyogenes and S. equi subsp. zooepidemicus share approx. 80 % of genome, it was assumed, that the deletion of genes covR and covS in Streptococcus equi subsp. zooepidemicus genome would lead to the higher hyaluronic acid production. The new strain SEZ covRS was obtained by allelic replacement mutagenesis. The cultivations performed in laboratory-scale fermenters in rich Wheat E1 medium showed approx. 9% higher production over parental strain. Therefore, the covRS regulation system plays the same role in Streptococcus equi subsp. zooepidemicus and indirectly regulates the biosynthesis of hyaluronic acid.
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Books on the topic "Streptoccus equi"

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Karlström, Åsa. Collagen-like proteins in horse pathogenic streptococcus equi. Uppsala, Sweden: Swedish University of Agricultural Sciences, 2005.

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Lannergård, Jonas. Potentially virulence-related extracellular proteins of Streptococcus equi. Uppsala: Swedish University of Agricultural Sciences, 2006.

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Book chapters on the topic "Streptoccus equi"

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Boyle, Ashley G. "Streptococcus equi ss equi." In Interpretation of Equine Laboratory Diagnostics, 165–69. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781118922798.ch29.

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Artiushin, Sergey, and John F. Timoney. "PCR for Detection of Streptococcus equi." In Streptococci and the Host, 359–61. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4899-1825-3_86.

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Bebe, Siziwe, and Tassos Anastassiades. "Chemical Modification of the N-Acetyl Moieties of Hyaluronic Acid from Streptococcus equi for Studies in Cytokine Production." In Methods in Molecular Biology, 99–113. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9154-9_9.

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