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1.
Rev. argent. microbiol ; 51(4): 334-338, dic. 2019. graf
Artigo em Espanhol | LILACS | ID: biblio-1057397

RESUMO

Resumen Los objetivos de este trabajo fueron estudiar la sensibilidad antibiótica de aislamientos de Corynebacterium pseudotuberculosis procedentes de pequeños rumiantes e investigar la presencia de integrones que contienen genes de resistencia. Se estudiaron 15 aislamientos de diferentes fuentes por los métodos de difusión y dilución. Por el método de difusión, amoxicilina-clavulánico, ampicilina, cefotaxima, cefoxitina, ciprofloxacina, cloranfenicol, eritromicina, estreptomicina, gentamicina, imipenem, kanamicina, norfloxacina, penicilina, rifampicina, tetraciclina, trimetroprima-sulfametoxazol y vancomicina fueron activos frente al 100% de los aislamientos, mientras que amicacina presentó resultados variables. En los aislamientos que desarrollaron frente a amicacina se investigó la presencia de integrones de clase 1. El resultado fue negativo, sugiriendo la ausencia del integrón. Utilizando el método de dilución, los antibióticos más activos correspondieron a los grupos de cefalosporinas, gluco-péptidos, macrólidos, quinolonas y tetraciclinas. Se demostró menor actividad de p-lactámicos y aminoglucósidos. No se registró variabilidad en los perfiles antibióticos en los aislamientos procedentes de diferentes fuentes.


Abstract The aims of this work were to study the antibiotic susceptibility in Corynebacterium pseudotuberculosis isolated from small ruminants and to determine the presence of integrons that contain resistance genes. Fifteen isolates of different sources were analysed using the diffusion and the dilution methods. When the diffusion method was performed, amoxicillin-clavulanic, ampicillin, cefotaxime, cefoxitin, ciprofloxacin, chloramphenicol, erythromycin, streptomycin, gentamicin, imipenem, kanamycin, norfloxacin, penicillin, rifampicin, tetracycline, trimethoprim-sulfamethoxazole and vancomycin were effective against the 100% of isolates, while amikacin showed variable results. The isolates that were able to grow with amikacin, were studied in relation to the presence of integron class 1. The result was negative, suggesting the absence of integron. Using dilution method, the antibiotics belonging to the cephalosporin, glycopeptide, macrolide, quinolone, and tetracycline groups were the most active ones for the C. pseudotuberculosis biovar ovis isolates. Less activity of p-lactam and aminoglycosides were observed. There was no observation of variability in the antibiotic patterns in the strains coming from different sources.


Assuntos
Animais , Ovinos/microbiologia , Corynebacterium pseudotuberculosis/efeitos dos fármacos , Integrons/efeitos dos fármacos , Antibacterianos/uso terapêutico , Técnicas In Vitro/métodos , Ruminantes/microbiologia , Diluição/análise , Difusão/efeitos dos fármacos , Linfadenite/prevenção & controle
2.
Rev Argent Microbiol ; 51(4): 334-338, 2019.
Artigo em Espanhol | MEDLINE | ID: mdl-30797605

RESUMO

The aims of this work were to study the antibiotic susceptibility in Corynebacterium pseudotuberculosis isolated from small ruminants and to determine the presence of integrons that contain resistance genes. Fifteen isolates of different sources were analysed using the diffusion and the dilution methods. When the diffusion method was performed, amoxicillin-clavulanic, ampicillin, cefotaxime, cefoxitin, ciprofloxacin, chloramphenicol, erythromycin, streptomycin, gentamicin, imipenem, kanamycin, norfloxacin, penicillin, rifampicin, tetracycline, trimethoprim-sulfamethoxazole and vancomycin were effective against the 100% of isolates, while amikacin showed variable results. The isolates that were able to grow with amikacin, were studied in relation to the presence of integron class1. The result was negative, suggesting the absence of integron. Using dilution method, the antibiotics belonging to the cephalosporin, glycopeptide, macrolide, quinolone, and tetracycline groups were the most active ones for the C.pseudotuberculosis biovar ovis isolates. Less activity of ß-lactam and aminoglycosides were observed. There was no observation of variability in the antibiotic patterns in the strains coming from different sources.


Assuntos
Antibacterianos/farmacologia , Corynebacterium pseudotuberculosis/efeitos dos fármacos , Animais , Corynebacterium pseudotuberculosis/classificação , Corynebacterium pseudotuberculosis/isolamento & purificação , Cabras/microbiologia , Testes de Sensibilidade Microbiana , Ovinos/microbiologia
3.
ARS med. (Santiago, En línea) ; 43(3): 92-98, 2018.
Artigo em Espanhol | LILACS | ID: biblio-1024186

RESUMO

n Desde la antigüedad la escrófula o lamparón era descrita como tumefacción crónica de ganglios linfáticos cervicales, que afectaba principalmente a niños, adolescentes y jóvenes. Se pensaba que algunas veces también podía comprometer otras partes del cuerpo y cursar con caquexia letal. En el presente artículo se intentó indagar las ideas reinantes en Chile sobre las características y tratamiento de la escrófula, antes del descubrimiento del bacilo tuberculoso. Se revisaron estadísticas principalmente hospitalarias, textos extranjeros disponibles y opiniones de médicos que trabajaron en Chile. Se consignaba el diagnóstico de escrófula en aproximadamente 2,2% de los pacientes, y tisis en 3,8 porciento. Sin embargo, ambas condiciones pueden haber sido inadecuadamente identificadas, especialmente debido a sub-diagnóstico de tisis pulmonar en casos clasificados como neumonía o pleuresía. En el tiempo descrito se opinaba que la escrófula era causada principalmente por transmisión hereditaria, alimentación inadecuada o sífilis en individuos predispuestos por un temperamento linfático. No se encontraron textos chilenos en que se normaran criterios para el diagnóstico de escrófula. Para el tratamiento se mencionaban plantas medicinales y algunos compuestos químicos administrados en infusiones o emplastos. Quedan dudas para interpretar lo que se pensaba sobre el significado y límites de las condiciones denominadas escrófula, escrofuloso y tisis. Este problema se aprecia también en la literatura clínic. (AU)


Since ancient times, scrofula was described as a chronic swelling of cervical lymph nodes, affecting mostly children and young people, and that sometimes it could also compromise other parts of the body, evolving into a lethal consumptive disease. The purpose of this study was to determine the main perceptions about scrofula in Chile, its characteristics and treatment, before the discovery of the tubercle bacillus. Hospital statistics on diseases, available foreign literature, and opinions of physicians who had worked in Chile were reviewed. Scrofula was diagnosed in roughly 2.2 percent of patients, and phthisis in 3.8 percent. Nevertheless, both conditions may have been inadequately identified, especially due to underdiagnosis of pulmonary phthisis, classified as pneumonia or pleurisy in some cases. Scrofula was considered to be caused chiefly by hereditary transmission, an inadequate diet, or syphilis, in people predisposed by a lymphatic temperament. No Chilean texts establishing criteria for diagnosing scrofula were found. Some writings suggested using medicinal plant infusions or poultices to treat scrofula. Uncertainty persists to understand the meaning and limits assigned to the conditions named scrofula, scrofulous and phthisis. This dilemma is also found in the international clinical literature, being attributed mainly to insufficient scientific and methodological development in that epoch.(Au)


Assuntos
Humanos , Criança , Adolescente , Adulto Jovem , Tuberculose dos Linfonodos , Tuberculose Pulmonar , Chile , Medicina
4.
Rev. chil. infectol ; 34(6): 589-595, dic. 2017. graf
Artigo em Espanhol | LILACS | ID: biblio-899764

RESUMO

Resumen En el siglo XIX se pensaba que la tuberculosis y la tumefacción ganglionar cervical llamada escrófula afectaban a individuos predispuestos por una "constitución diatésica" heredada. En 1882 Robert Koch demostró que lesiones tuberculosas y escrofulosas humanas eran causadas por el bacilo Mycobacterium tuberculosis. A principios del siglo XX se estableció que Mycobacterium bovis, bacilo de la tuberculosis del ganado, podía también causar linfoadenitis cervical en humanos, especialmente en niños, por la ingestión de leche de vacas enfermas. La condición disminuyó después que se controló la infección en el ganado y se introdujo la pasteurización de la leche. En 1956 se describió la linfoadenitis cervicofacial granulomatosa necrosante y supurada causada por micobacterias no tuberculosas. Afecta principalmente a niños bajo los cinco años, especialmente en países sin endemia de tuberculosis. Las linfoadenitis cervicales tuberculosas predominan en adultos jóvenes en países con tuberculosis endémica y en individuos infectados por VIH.


In the 19th century it was widely believed that both tuberculosis and cervical lymph node swelling, known as scrophula, affected individuals predisposed to an inherited "diathetic constitution". In 1882 Robert Koch proved that human tuberculosis and scrophulous lesions were caused by the bacillus Mycobacterium tuberculosis. In the early twentieth century it was stated that Mycobacterium bovis, the bacillus of cattle tuberculosis, could also cause cervical lymphoadenitis in humans, especially in children, by the intake of milk from sick cows. The incidence of this condition decreased after the infection was controlled in cattle and pasteurization of the milk was introduced. A type of granulomatous necrotizing and suppurative cervico-facial lymphadenitis associated to non-tuberculous mycobacteria was described in 1956. It mainly affects children younger than 5 years old, particularly those born in countries with non-endemic tuberculosis. Tuberculous cervical lymphadenitis is prevalent in young adults from tuberculosis-endemic countries and in HIV-infected subjects. Infectious etiology displaced the importance of a personal disposition in the development of scrophula. Nevertheless, mutations that confer susceptibility to mycobacterial infection are currently investigated.


Assuntos
Humanos , História do Século XIX , História do Século XX , Tuberculose dos Linfonodos/história , Linfadenite/história , Tuberculose dos Linfonodos/microbiologia , Tuberculose dos Linfonodos/patologia , Gânglio Cervical Superior/microbiologia , Gânglio Cervical Superior/patologia , Linfonodos/microbiologia , Linfonodos/patologia , Linfadenite/microbiologia , Linfadenite/patologia , Mycobacterium/patogenicidade
5.
Rev. chil. infectol ; 34(1): 55-59, feb. 2017. ilus
Artigo em Espanhol | LILACS | ID: biblio-844445

RESUMO

In the 19th century scrofula or scrofulous adenitis was a frequent condition estimated by the finding of swollen cervical lymph nodes or scars, occurring in both sexes at all epochs of life, mainly in children. It was thought that it principally affected people with an inherited phlegmatic constitution that involved a scrofulous disposition or "diathesis". The disease would be triggered by environmental agents, bad habits or excesses in style of life. Besides injuring cervical lymph nodes, in some cases scrofula could compromise other groups of lymph nodes, bones, joints, lungs or other viscera. In some of its clinical presentations the disease could be healed while others were often lethal disorders. The finding of multiorgan compromise, caseation and "tuberculization" of the lesions originated discussion whether scrofula and tuberculosis were one or two different diseases and if they affected subjects with a common diathesis or people with a distinct scrofulous or tuberculous diathesis. Along the 19th century, before the discovery of Koch's bacillus, the notion of contagion as a cause of scrofula and tuberculosis was not predominant in Europe.


En el siglo XIX la escrófula era frecuente, estimada por la percepción de nódulos o cicatrices en el cuello. Paulatinamente se le empezó a denominar adenitis escrofulosa. Podía presentarse en personas de ambos sexos en todas las épocas de la vida; pero era más frecuente en la infancia. Se pensaba que afectaba principalmente a sujetos con una constitución flemática heredada que implicaba una susceptibilidad o diátesis escrofulosa. La enfermedad sería desencadenada por agentes ambientales, hábitos, o excesos en el estilo de vida. Aparte de los ganglios linfáticos cervicales, podía afectar otros grupos ganglionares, huesos, articulaciones, pulmones y otras visceras, atribuyéndosele diversas formas de presentación que variaban entre las potencialmente curables a las frecuentemente mortales. La afectación multiorgánica, la caseificación y la "tuberculización" de las lesiones originaron la discusión sobre si la escrófula y la tuberculosis eran una sola enfermedad o dos diferentes, y si se desencadenaban sobre una diátesis común o cada una sobre una diátesis específica escrofulosa o tuberculosa. En la mayor parte del siglo XIX, antes del descubrimiento del bacilo de Koch, la noción de contagio como causa de la escrófula y de la tuberculosis pulmonar no parecía predominar en países europeos.


Assuntos
Humanos , História do Século XIX , Tuberculose dos Linfonodos/história
6.
Medisan ; 16(10): 1623-1628, oct. 2012.
Artigo em Espanhol | LILACS | ID: lil-660112

RESUMO

Se describe el caso clínico de una paciente de 32 años de dad, que acudió a consulta por presentar cuadro febril y adénico desde hacía varias semanas, asociado a manifestaciones generales de anorexia y pérdida de peso. En el examen clínico se constató la presencia de adenopatías cervicales de 2 cm y orofaringe enrojecida. Los resultados de los exámenes complementarios efectuados y la evaluación histológica del ganglio linfático confirmaron que se trataba de una linfoadenitis histiocítica necrosante en fase proliferativa (enfermedad de Kikuchi Fujimoto). El estudio inmunohistoquímico no reveló malignidad.


The case report of a 32 year-old patient is described who attended the department for presenting adenoid and febrile condition for several weeks, associated with general manifestations of anorexy and weight loss. In the clinical examination the presence of 2 cm cervical adenopathies and reddened oropharynx was confirmed. The results of the complementary tests and the histological evaluation of the lymph node confirmed that it was a necrosing histiocytic lymphadenitis in proliferative stage, (Kikuchi Fujimoto disease). The immunological histological and chemical study did not reveal malignancy.

7.
Medisan ; 16(10)oct.. 2012. ilus
Artigo em Espanhol | CUMED | ID: cum-51905

RESUMO

Se describe el caso clínico de una paciente de 32 años de dad, que acudió a consulta por presentar cuadro febril y adénico desde hacía varias semanas, asociado a manifestaciones generales de anorexia y pérdida de peso. En el examen clínico se constató la presencia de adenopatías cervicales de 2 cm y orofaringe enrojecida. Los resultados de los exámenes complementarios efectuados y la evaluación histológica del ganglio linfático confirmaron que se trataba de una linfoadenitis histiocítica necrosante en fase proliferativa (enfermedad de Kikuchi Fujimoto). El estudio inmunohistoquímico no reveló malignidad(AU)


The case report of a 32 year-old patient is described who attended the department for presenting adenoid and febrile condition for several weeks, associated with general manifestations of anorexy and weight loss. In the clinical examination the presence of 2 cm cervical adenopathies and reddened oropharynx was confirmed. The results of the complementary tests and the histological evaluation of the lymph node confirmed that it was a necrosing histiocytic lymphadenitis in proliferative stage, (Kikuchi Fujimoto disease). The immunological histological and chemical study did not reveal malignancy(AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Linfadenite Histiocítica Necrosante , Linfadenite , Atenção Secundária à Saúde
8.
Rev. argent. microbiol ; 43(1): 9-17, ene.-mar. 2011. graf, tab
Artigo em Espanhol | LILACS | ID: lil-634672

RESUMO

El objetivo de este trabajo fue evaluar un ELISA indirecto desarrollado para medir la respuesta inmune humoral en carneros vacunados contra la linfoadenitis caseosa (LC) y/o desafiados con una cepa de Corynebacterium pseudotuberculosis homóloga. Se distribuyeron corderos de 4 meses clínicamente sanos en 4 grupos: grupo 1, corderos vacunados (G1, n = 5); grupo 2, corderos vacunados e inoculados (G2, n = 8); grupo 3, corderos inoculados (G3, n = 2); y grupo 4, control (G4, n = 2). Los animales del G1 y del G2 recibieron dos dosis de una bacterina experimental; los del G2 y del G3 fueron desafiados con una cepa de C. pseudotuberculosis cuatro semanas posvacunación. Se estudiaron por ELISA los títulos serológicos durante 7 meses y se efectuaron las necropsias en los grupos G2, G3 y G4. Se tomaron muestras de pulmón y linfonódulos para efectuar estudios bacteriológicos e histopatológicos. La cepa inoculada en los animales del G2 y del G3 reprodujo las lesiones macroscópicas y microscópicas típicas de la LC; ésta fue aislada del sitio de inoculación, de linfonódulos o de pulmón en 7/8 animales del G2 y en 2/2 animales del G3. La prueba de ELISA, con una sensibilidad del 98% y una especificidad del 100%, detectó diferencias significativas entre los serorreactores de los diferentes grupos experimentales y permitió establecer una relación con el tipo de tratamiento aplicado. Se concluye que el ELISA desarrollado puede ser una herramienta útil para identificar animales infectados y con clínica positiva a la LC.


The aim of this study was to evaluate an indirect specific ELISA developed for the detection of humoral immune response in vaccinated sheep and/or challenged with a Corynebacterium pseudotuberculosis strain. Healthy 4 month-old lambs were distributed into 4 groups: Group 1 immunized (G1, n = 5), Group 2 vaccinated/inoculated (G2, n = 8), Group 3 inoculated (G3, n = 2) and Group 4 control (G4, n = 2). Groups G1 and G2 received two doses of an experimental bacterin. Four weeks postvaccination, G2 and G3 groups were challenged with a C. pseudotuberculosis strain. Serological titers were studied by ELISA for 7 months and pathological studies were performed in groups G2, G3 and G4 by taking lung and lymph node samples for bacteriology and histopathology. The inoculated strain in G2 and G3 animals reproduced the macroscopic and microscopic lesions typical of caseous lymphadenitis (CL) and was isolated from the inoculation site, lymph nodes and/or lung in 7/8 animals from G2, and 2/2 animals of G3. The developed ELISA test had sensitivity and specificity of 98% and 100% respectively, detected significant differences between serological reactors of different experimental groups and allowed to establish a relationship with the type of treatment. We conclude that the developed ELISA may be a useful tool to identify infected animals with positive clinical CL.


Assuntos
Animais , Anticorpos Antibacterianos/análise , Vacinas Bacterianas/imunologia , Infecções por Corynebacterium/veterinária , Corynebacterium pseudotuberculosis/imunologia , Ensaio de Imunoadsorção Enzimática/veterinária , Linfadenite/veterinária , Doenças dos Ovinos/imunologia , Ovinos/imunologia , Vacinação/veterinária , Infecções por Corynebacterium/imunologia , Infecções por Corynebacterium/microbiologia , Infecções por Corynebacterium/prevenção & controle , Ensaio de Imunoadsorção Enzimática/métodos , Pulmão/imunologia , Linfonodos/imunologia , Linfadenite/imunologia , Linfadenite/microbiologia , Linfadenite/prevenção & controle , Distribuição Aleatória , Sensibilidade e Especificidade , Doenças dos Ovinos/microbiologia , Doenças dos Ovinos/prevenção & controle
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