ABSTRACT
Resumen Cinco caninos de 4 a 9 años de edad fueron diagnosticados con miastenia gravis adquirida en asociación con miositis de músculos masticatorios, en el Hospital Escuela de la Facultad de Ciencias Veterinarias de Buenos Aires, durante el periodo 2013-2016. El diagnóstico se confirmó mediante la realización de pruebas serológicas específicas, electromiografías y biopsias musculares de los músculos masticatorios. Se realizó el tratamiento con bromuro de piridostigmina y prednisolona, por el origen inmunomediado de ambas enfermedades.
Abstract Five canines from 4 to 9 years of age were diagnosed with acquired myasthenia gravis in association with masticatory muscle myositis, in the Hospital School of the Faculty of Veterinary Sciences of Buenos Aires, during the 2013-2016 period. The diagnosis was confirmed by performing specific serological tests, electromyography, and muscle biopsies of the masticatory muscles. The treatment used pyridostigmine bromide and prednisolone, due to the immune-mediated origin of both diseases.
Resumo Cinco caninos de 4 a 9 anos foram diagnosticados com miastenia gravis adquirida em associação com miosite de músculos mastigatórios, no Hospital Escola da Faculdade de Ciências Veterinárias de Buenos Aires, durante o período 2013-2016. O diagnóstico foi confirmado pela realização de testes serológicos específicos, eletromiografias e biópsias musculares dos músculos mastigatórios. Realizou-se o tratamento com brometo de piridostigmina e prednisolona, devido à origem imunomediada de ambas as doenças.
ABSTRACT
Abstract The aim of this study was to standardize a diagnosis procedure to detect Mycobacterium avium subsp. paratuberculosis (Map) DNA in raw cow milk samples under field conditions. A procedure that combines both immunomagnetic separation and IS900 -PCR detection (IMS-IS1 PCR) was employed on milk samples from 265 lactating Holstein cows from Map infected and uninfected herds in Argentina. IMS-IS1 PCR results were analyzed and compared with those obtained from milk and fecal culture and serum ELISA. The extent of agreement between both tests was determined by the Kappa test. IMS-IS1 PCR showed a detection limit of 101 CFU of Map/mL of milk, when 50:50 mix of monoclonal and polyclonal antibodies were used to coat magnetic beads. All of the 118 samples from the Map uninfected herds were negative for the set of the tests. In Map infected herds, 80 out of 147 cows tested positive by milk IMS-IS1 PCR (55%), of which 2 (1.4%) were also positive by milk culture, 15 (10%) by fecal culture, and 20 (14%) by serum ELISA. Kappa statistics (95% CI) showed a slight agreement between the different tests (<0.20), and the proportions of agreement were ≤0.55. The IMS-IS1 PCR method detected Map in milk of the cows that were not positive in other techniques. This is the first report dealing with the application of IMS-IS1 PCR in the detection of Map in raw milk samples under field conditions in Argentina.
Subject(s)
Paratuberculosis/microbiology , Cattle Diseases/microbiology , Polymerase Chain Reaction/methods , Mycobacterium avium subsp. paratuberculosis/isolation & purification , Immunomagnetic Separation/methods , Milk/microbiology , Paratuberculosis/diagnosis , Paratuberculosis/physiopathology , Argentina , Lactation , Cattle , Cattle Diseases/diagnosis , Cattle Diseases/physiopathology , Mycobacterium avium subsp. paratuberculosis/genetics , Mycobacterium avium subsp. paratuberculosis/chemistry , Milk/chemistry , Feces/microbiologyABSTRACT
This study aimed to evaluate the immune response in bovines following immunization with a mycobaterial Lipoarabinomannan extract (LAMe) and the effect of Map challenge. LAMe vaccine induced specific antibody levels that diminished after the challenge and affected Map excretion at least for 100 days thereafter.
Subject(s)
Mycobacterium avium subsp. paratuberculosis , Ruminants , Vaccination , Virulence Factors , Immunity, Active , ParatuberculosisABSTRACT
La miastenia gravis (MG) es una enfermedad neuromuscular de causa autoinmune, en la que es importante realizar un diagnóstico clínico y bioquímico oportuno para instaurar la terapéutica adecuada que cambiará la calidad y expectativa de vida de los caninos. En el presente trabajo se describen los métodos diagnósticos habitualmente utilizados y el tratamiento de treinta y dos caninos con sospecha de MG, y se propone la administración de bromuro de piridostigmina como una herramienta más, útil en el diagnóstico de la MG canina.
Miastenia Gravis is a neuromuscular disease caused by autoantibodies. Early Clinical and biochemical diagnosis and treatment is demanded in the assurement of quality and time of life in all dogs. In this study we describe the conventional diagnosis methods and therapy in 32 dogs with suspected myasthenia gravis and propose the administration of bromide of piridostigmin as another usefull diagnosis method in dogs.
Subject(s)
Dogs , Pyridostigmine Bromide , Myasthenia Gravis , Dogs , TherapeuticsABSTRACT
Cupania vernalis Cambess. é uma espécie arbórea da família Sapindaceae, comumente referida como "camboatã" e empregada na medicina popular contra asma, tosses convulsivas e como antiinflamatório, febrífugo e tônico. O presente trabalho procurou contribuir para a identificação morfoanatômica dos órgãos vegetativos aéreos dessa planta medicinal com fins farmacognósticos. O material botânico foi fixado, seccionado, corado por meio de técnicas usuais ou submetido a testes microquímicos, além de ser processado para a realização de análises em MEV. A espécie apresenta folhas compostas paripinadas, epiderme foliar uniestratificada constituída de células relativamente maiores na face adaxial, mesofilo dorsiventral e diversos feixes vasculares colaterais em arranjo cêntrico na nervura central. No caule, visualizam-se o cilindro floemático externo ao xilemático, circundado por bainha esclerenquimática, e a presença de fibras e células pétreas no córtex e na medula. Em ambos os órgãos são observados tricomas tectores e cristais de oxalato de cálcio.
Cupania vernalis Cambess. is a woody species from Sapindaceae, commonly known as "camboatã" and used against asthma, coughs and as anti-inflammatory, antipyretic and tonic in folk medicine. This work has aimed to contribute to the morpho-anatomical identification of the aerial vegetative organs of this medicinal plant for pharmacognostic purposes. The botanical material was fixed, sectioned and stained with standard dyes. Microchemical tests and scanning electron microscopy were also carried out. This species has paripinnate compound leaves, uniseriate leaf epidermis consisting of larger cells on the adaxial surface, dorsiventral mesophyll and various collateral vascular bundles in centric arrangement in the midrib. In the stem, it is encountered a phloem cylinder external to the xylem one and encircled by a sclerenchymatic sheath, as well as fibres and stone cells in the cortex and pith. Non-glandular trichomes and calcium oxalate crystals are present in the leaf and stem.
ABSTRACT
Se estudiaron 55 bovinos divididos en 3 gruposÑ C, controles no vacunadosñ HS, inmunizados con vacuna hidroxi-saponinada; y EO, inyectados con vacuna oleosa, que se trasladaron y se desafiaron con el virus de la fiebre aftosa (VFA). Se sangraron antes y 7 días después del desafío, y se contaron los leucocitos y subpoblaciones linfocitarias. Todos mostraron marcada neutropenia y eosinofilia, significativamente mayor en el grupo HS que en los grupos C y EO; ambos parámetros mejoraron significativamente en la 2§ sangría. El número total de linfocitos era normal. Las proporción de células B fue normal y no varió en los animales enfermos. Se estudió un grupo de animales antes y despues de la vacunación y viaje: los valores previos fueron normales y significativamente diferentes de los posteriores. Se postula que el stress y la saponina causaron la alteración. Para estudiar la respuesta inmune celular se usó, en los mismos grupos de animales, cultivo de linfocitos periféricos e inhibición de la migración leucocitaria (IML) frente a estimulantes inespecífico (ConA) y específicos (VFA purificado e inactivado de tipos O, A y C). Con ambas técnicas, todos los animales, inclusive los enfermos (C, 2§ sangría) respondieron bien a la ConA y dos animales que enfermaron y curaron respondieron bien al VFA durante 4 meses. Las respuestas al VFA, en C y en vacunados no protegidos, fueron negativas; entre los vacunados protegidos, 2/12 fueron positivos en cultivo y 4/6 en IML. Los resultados indican que...