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1.
Rev. méd. Chile ; 147(10): 1340-1345, oct. 2019. tab, graf
Article in English | LILACS | ID: biblio-1058603

ABSTRACT

ABSTRACT Infectious endocarditis (IE) by Bartonella species is an emerging problem worldwide. We report two cases of native valve Bartonella-associated IE events, both affecting adult male patients with a history of alcohol abuse and a low socioeconomic status. Admissions were due to pancytopenia and bleeding in one case and embolic stroke in the other. Blood cultures were negative and IgG indirect immunofluorescence assays (IFA) were positive for B. henselae/B. quintana in high titers (1/16,384-1/16,384, and 1/32,768 -1/16,384, respectively). Cases were classified as definitive IE events according to modified Duke criteria due to the presence of valve vegetations with at least three minor criteria. One patient required aortic mechanical valve replacement and survived, and the other died after a massive hemorrhagic transformation of his stroke. PCR amplification and sequencing of the 16S ribosomal bacterial DNA from a valve tissue sample obtained at surgery in the patient who survived, confirmed B. quintana as the etiological agent. Bartonella-associated IE is an emerging problem in Chile, present in disadvantaged populations. It should be suspected in patients with culture-negative IE. IFA does not discriminate between B. henselae and B. quintana infection, but high titers suggest IE. Complementary PCR techniques may help to elucidate the final causative agent.


La endocarditis infecciosa(EI) asociada a Bartonella es un problema emergente a nivel mundial. Publicamos los 2 primeros casos de EI en válvula nativa asociados a Bartonella en Chile, los que afectaron a pacientes masculinos con historia de consumo de alcohol y bajos ingresos. La hospitalización fue provocada por pancitopenia y hemorragias en un caso y por un evento cerebrovascular en el otro. Se solicitó serología para Bartonella por inmunofluorescencia indirecta (IFI) para ampliar el estudio ante hemocultivos negativos y en ambos casos se reportaron resultados intensamente positivos para B. henselae y B. quintana1/16.384-1/16.384 y 1/32.768 -1/16.384, respectivamente). Los casos se clasificaron como eventos definitivos de EI según los criterios modificados de Duke debido a la presencia de vegetaciones valvulares con al menos 3 criterios menores. Un paciente requirió reemplazo valvular aórtico y sobrevivió, y el otro falleció tras una transformación hemorrágica masiva del infarto cerebral. La amplificación del ADN ribosomal 16S por RCP y posterior secuenciación de una muestra de tejido valvular confirmó la presencia de B. quintana. La EI por Bartonella sp. es un problema emergente en Chile, probablemente asociada a poblaciones desfavorecidas, la que debe ser sospechada en pacientes con cultivos negativos. La IFI no permite discriminar infecciones por B. henselae o B. quintana pero los títulos altos sugieren EI. Técnicas complementarias por RCP pueden ayudar a dilucidar el diagnóstico.


Subject(s)
Humans , Male , Middle Aged , Aged , Bartonella quintana/isolation & purification , Bartonella henselae/isolation & purification , Endocarditis, Bacterial/microbiology , Bartonella Infections/microbiology , Bartonella Infections/diagnostic imaging , Tomography, X-Ray Computed , Chile , Polymerase Chain Reaction , Fluorescent Antibody Technique, Indirect , Endocarditis, Bacterial/diagnostic imaging
4.
Rev. Inst. Med. Trop. Säo Paulo ; 56(2): 93-95, Mar-Apr/2014. tab
Article in English | LILACS | ID: lil-703739

ABSTRACT

A novel SYBR® green-real time polymerase chain reaction (qPCR) was developed to detect two Bartonella species, B. henselae and B. clarridgeiae, directly from blood samples. The test was used in blood samples obtained from cats living in animal shelters in Southern Brazil. Results were compared with those obtained by conventional PCR targeting Bartonella spp. Among the 47 samples analyzed, eight were positive using the conventional PCR and 12 were positive using qPCR. Importantly, the new qPCR detected the presence of both B. henselae and B. clarridgeiae in two samples. The results show that the qPCR described here may be a reliable tool for the screening and differentiation of two important Bartonella species.


Um novo teste baseado na reação em cadeia da polimerase em tempo real (qPCR) com SYBR ® Green foi desenvolvido para detectar duas espécies de Bartonella, B. henselae e B. clarridgeiae, diretamente em amostras de sangue. Este teste foi utilizado em amostras de sangue obtidas de gatos que vivem em abrigos de animais do sul do Brasil. Os resultados foram comparados aos obtidos pelo PCR convencional utilizado para a detecção de Bartonella spp. Das 47 amostras analisadas, oito foram positivas no PCR convencional e 12 foram positivas para qPCR. A reação de qPCR, permitiu a detecção da presença simultânea de B. henselae e B. clarridgeiae em duas destas amostras. Os resultados mostram que a qPCR aqui descrita pode ser uma ferramenta confiável para a detecção e diferenciação de duas espécies importantes de Bartonella spp.


Subject(s)
Animals , Cats , Bartonella Infections/veterinary , Bartonella/genetics , Bartonella/isolation & purification , Cat Diseases/microbiology , DNA, Bacterial/blood , Multiplex Polymerase Chain Reaction/veterinary , Real-Time Polymerase Chain Reaction/veterinary , Bartonella Infections/microbiology , Bartonella henselae/genetics , Bartonella henselae/isolation & purification , Species Specificity
5.
Mem. Inst. Oswaldo Cruz ; 107(6): 772-777, set. 2012. ilus
Article in English | LILACS | ID: lil-649493

ABSTRACT

Bartonella species are fastidious bacteria that predominantly infect mammalian erythrocytes and endothelial cells and cause long-lasting bacteraemia in their reservoir hosts. Reports that describe the epidemiology of bartonellosis in Brazil are limited. This study aimed to detect and characterise Bartonella spp DNA from cat blood samples in São Luís, Maranhão, north-eastern Brazil. Among 200 cats tested for multiple genes, nine (4.5%) were positive for Bartonella spp: six cats for Bartonella henselae and three for Bartonella clarridgeiae. Based on the phylogenetic analysis of four genes, the B. henselae strain matched strains previously observed in Brazil and was positioned in the same clade as B. henselae isolates from the United States of America. Moreover, sequence alignment demonstrated that the B. clarridgeiae strain detected in the present study was the same as the one recently detected in cats from southern Brazil.


Subject(s)
Animals , Cats , Female , Male , Bartonella Infections/veterinary , Bartonella/genetics , Cat Diseases/microbiology , Bartonella Infections/diagnosis , Bartonella Infections/microbiology , Bartonella henselae/genetics , Bartonella henselae/isolation & purification , Bartonella/classification , Bartonella/isolation & purification , Cat Diseases/diagnosis , DNA, Bacterial/analysis , Phylogeny , Polymerase Chain Reaction/veterinary
6.
Braz. j. infect. dis ; 11(6): 591-594, Dec. 2007. ilus
Article in English | LILACS | ID: lil-476631

ABSTRACT

Bartonella is an important cause of blood culture-negative endocarditis in recent studies. Seroprevalence studies in the States of Minas Gerais and Rio de Janeiro have shown Bartonella IgG positivity around 14 percent in healthy adults and 40 percent in HIV seropositive adults, respectively. A case report of a 46-year-old white male with moderate aortic regurgitation (AR) due to rheumatic heart disease (RHD), admitted due to worsening heart failure, is presented. Clinical features were apyrexia, anemia, polyclonal hypergammaglobulinemia, hematuria and splenomegaly. He was submitted to surgery due to worsening AR. Histopathology of the excised valve showed active bacterial endocarditis and underlying RHD. Routine blood cultures were negative. Indirect immunofluorescence (IFI) assays for Coxiella burnetii were non-reactive. Bartonella henselae IgG titer was 1:4096 prior to antibiotics and 1:512 14 months after treatment. History of close contact with a young cat during the months preceding his admission was elicited.


Subject(s)
Animals , Cats , Humans , Male , Middle Aged , Bartonella Infections/microbiology , Bartonella henselae/isolation & purification , Endocarditis, Bacterial/microbiology , Aortic Valve Insufficiency/etiology , Bartonella Infections/diagnosis , Bartonella henselae/immunology , Endocarditis, Bacterial/complications , Fluorescent Antibody Technique, Indirect , Rheumatic Heart Disease/complications , Rheumatic Heart Disease/surgery
7.
Braz. j. infect. dis ; 7(1): 1-6, Feb. 2003. tab
Article in English | LILACS | ID: lil-351150

ABSTRACT

The human bartonelloses are a group of diseases with a rapidly increasing clinical spectrum. Well known manifestations such as Carrion's disease, trench fever, cat-scratch disease, and bacillary angiomatosis are examples of Bartonella spp. infection. Along with these diseases, recurrent bacteremia, endocarditis, septicemia, erythema nodosum, erythema multiforme, trombocytopenic purpura and other syndromes have been reported having been caused by bacteria of this genus. The infectious process and the pathogenesis of these microorganisms are poorly understood. The bartonelloses may have a benign and self-limited evolution in a host, or a potentially fatal one. These bacteria can provoke a granulomatous or an angioproliferative histopathologic response. As these diseases are not yet well defined, we have reviewed the four main human bartonelloses and have examined unclear points about these emergent diseases


Subject(s)
Animals , Cats , Humans , Bartonella Infections/microbiology , Bartonella/classification , Angiomatosis, Bacillary/diagnosis , Angiomatosis, Bacillary/microbiology , Angiomatosis, Bacillary/transmission , Bartonella Infections/pathology , Bartonella Infections/transmission , Bartonella/pathogenicity , Cat-Scratch Disease/diagnosis , Cat-Scratch Disease/microbiology , Cat-Scratch Disease/transmission , Immunocompromised Host , Trench Fever/diagnosis , Trench Fever/microbiology , Trench Fever/transmission
8.
Lima; Instituto Nacional de Salud; 2001. 88 p. ilus, tab, graf.(Módulos Técnicos. Serie de Documentos Monográficos, 13).
Monography in Spanish | LILACS, MINSAPERU | ID: biblio-1182084

ABSTRACT

Contiene: 1. Historia de la enfermedad; 2. Microbiología; 3. Patogenia/fisiopatología; 4. Inmunología; 5. Anatomía patológica; 6. Aspectos clínicos; 7. Aspectos epidemiológicos; 8. Diagnóstico de laboratorio; 9. Diagnóstico diferencial; 10. Procedimientos para la vigilancia epidemiológica; 11. Medidas de prevención y control; 12. Tratamiento


Subject(s)
Bartonella Infections/diagnosis , Bartonella Infections/microbiology , Bartonella Infections/prevention & control , Epidemiological Monitoring , Peru
9.
Lima; Perú. Ministerio de Salud. Oficina General de Epidemiología; Instituto Nacional de Salud; 2001. 88 p. ilus, tab.(Documentos técnicos. Serie de documentos monográficos, 13).
Monography in Spanish | LILACS | ID: lil-651114
10.
Rev. peru. med. trop ; 7(1): 13-25, abr. 1993. tab, ilus
Article in Spanish | LILACS | ID: lil-154644

ABSTRACT

En Setiembre de 1988 se realizó un estudio epidemiológico sobre Bartonelosis en los distritos de Masin, Rahuapampa, Huachis, Chaná, Pontó y Huachi en el valle del Puchka, provincia de Huari, Ancash. Se encuestó a 208 pobladores, detectándose entre ellos 7 casos activos de Bartonelosis. A todos se les tomó una muestra de sangre para frotises, hemocultivos y serología. En los 201 personas asintomáticas, se encontró a 77 (38.3 por ciento) portadores asintomáticos de Bartonella bacilliformis. Todas las muestras fueron positivas a la serología teniendo el 91.4 por ciento de la población títulos que oscilaron entre 1/80 y 1/320. Un 12.5 por ciento refirió antecedentes de la enfermedad bartonelósica. Entre los casos clínicos, 6 estuvieron en la fase eruptiva y uno en la fase hemática. Alguno de los casos clínicos y de los portadores se encontraron a más de 3,000 metros de altitud. Se observa que los portadores están en mayor porcentaje entre los que refieren antecedentes y en altitudes más bajas.


Subject(s)
Humans , Male , Female , Bartonella Infections/diagnosis , Bartonella Infections/pathology , Bartonella Infections/epidemiology , Peru/epidemiology , Bartonella/isolation & purification , Bartonella Infections/immunology , Bartonella Infections/microbiology , Bartonella Infections/blood
11.
Rev. peru. med. trop ; 6: 27-9, 1992. ilus
Article in Spanish | LILACS | ID: lil-121511

ABSTRACT

La Enfermedad de Carrión es producida por Bartonella bacilliformis a través de la picadura de insecto del género Lutzomyia. La bacteria después de un periodo de incubación en el RES, parasita a los hematies. Conociendo estos aspectos dinámicos de la Bartonella, nos llevó a realizar la réplica de la infección In-Vitro. Para lo cual utilizamos dos cepas de Bartonella (21 y 051), el medio Agar de Fases y hematíes de los diferentes grupos sanguíneos humanossanos. Cultivamos el complejo Hematíes-Bartonellas, utilizando 15 frascos de Kolle con Medio Agar de Fases para cada una de las cepas de Bartonella. Resultados: A partir del sexto día de incubación, se observó el parasitismo de los hematíes por la bacteria, siendo más acentuado a las dos semanas de incubación. Conclusión: el parasitismo hemático en la infección in-vitro, es parecido a la infección natural de las personas en zonas endémicas de Bartonelosis


Subject(s)
Bartonella/analysis , Bartonella Infections/microbiology , In Vitro Techniques , Bartonella/classification , Bartonella Infections/classification , Bartonella Infections/etiology , Bartonella Infections/metabolism , Erythrocytes/cytology , Erythrocytes/microbiology , Erythrocytes/parasitology
13.
Rev. Univ. Guayaquil ; 3(69): 1I-6I, jul.-sept. 1987. ilus
Article in Spanish | LILACS | ID: lil-64749

ABSTRACT

En dos pacientes con cuadros clínicos de Verruga Peruana procedentes del Sur de la Provincia de Manabí se aisló por cultivos en agares de fases la Bartonella bacilliformis, comprobándose así la etiología de esta enfermedad que en esa región tiene caracteres clínicos especiales: es relativamente benigna


Subject(s)
Humans , Bartonella Infections/microbiology , Bartonella/isolation & purification
15.
Diagnóstico (Perú) ; 15(2): 42-4, feb. 1985. mapas, tab
Article in Spanish | LILACS, LIPECS | ID: lil-29041

ABSTRACT

Durante 1978 a 1983 se condujo búsquedas ocasionales de Lutzomyia verrucarum, insecto vector de la enfermedad de Carrión, en la zona sur de la provincia de Yauyos. La zona explorada comprende localidades que se hallan entre 1020 m.s.n.m. (San Geronimo) y los 2700 m.s.n.m. (Huancarag): el insecto fue encontrado entre 1880 y 2510 m.s.n.m., las cuales se localizan alrededor de los 12-54'28" de latitud sur


Subject(s)
Animals , Psychodidae/growth & development , Bartonella Infections/microbiology , Peru
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