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1.
Rev. medica electron ; 41(4): 1082-1088, jul.-ago. 2019.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1102763

RESUMO

El papel desempeñado por destacados científicos cubanos y matanceros como Juan Nicolás Dávalos Betancourt y Federico Grande Rossi fue fundamental en el desarrollo de la bacteriología en el país. Con este trabajo se pretende acercar a estos dos hombres unidos en la vida como grandes amigos y en la profesión. Juan Nicolás Dávalos Betancourt conocido como "el sabio que soñaba con las bacterias" trasciende su campo de trabajo particular y se proyecta en el desarrollo de nuestra nación. Federico Grande Rossi fue médico bacteriólogo y fecundo escritor (AU).


The role played by eminent Cuban and Matanzasan scientist like Juan Nicolas Davalos Betancourt and Federico Grandi Rossi was essential for the development of the bacteriology in the country. With this work the authors pretend to bring near these two men who were very close in life as friends and colleagues in their profession. Juan Nicolas Davalos Betancourt, known as "the scholar who dreamed with bacteria" went beyond his particular work field and entered the process of development of Cuban nation. Federico Grandi Rossi was a doctor-bacteriologist and a prolific writer (AU).


Assuntos
Humanos , Masculino , História do Século XIX , História do Século XX , Médicos/história , Pesquisa/história , Bacteriologia , Ciência de Laboratório Médico , Biografia , Doenças Transmissíveis/história , Técnicas de Pesquisa
3.
Arch. latinoam. nutr ; 69(1): 59-67, mar. 2019. ilus, tab, graf
Artigo em Espanhol | LILACS, LIVECS | ID: biblio-1022752

RESUMO

Dentro de los patotipos de Escherichia coli, el grupo STEC puede producir en el ser humano desde diarrea hemorrágica hasta insuficiencia renal aguda e incluso la muerte; el ganado bovino es el principal reservorio de este agente patógeno y por ende la ingestión de alimentos derivados de estos animales de abasto son una fuente muy importante de infección para el hombre. El objetivo principal de este estudio fue determinar la prevalencia de STEC en muestras de carne cruda comercializada en Pamplona-Colombia y en cepas obtenidas a partir de las muestras. Se analizaron cien muestras de carne cruda aplicando la técnica de Reacción en Cadena de la Polimerasa para la detección de los siguientes genes en muestras y en cepas STEC: stx1, stx2, eae y hlyA. Adicionalmente, se estableció el patrón de resistencia-susceptibilidad antibiótica de cepas STEC aisladas empleando métodos regulados. En el 39% de las muestras fue posible detectar el gen stx2; en el 38%, de ellas, se detectaron los genes stx1 y stx2. Además, se aislaron cepas STEC en el 13% de las muestras analizadas, 85% de ellas portaban el gen hlyA. No se detectó la presencia del gen eae o del serogrupo O157. Las cepas aisladas demostraron resistencia frente a algunos antibióticos de primera y segunda generación. En conclusión, se detectó la presencia de genes que codifican factores de virulencia en las muestras de carne analizadas que representan un riesgo potencial para la salud de los consumidores. Este es el primer reporte de STEC no O157 que codifica el gen de la enterohemolisina en alimentos en Colombia(AU)


Within the Escherichia coli patotypes, the STEC group can produce in humans from hemorrhagic diarrhea to acute renal failure and even death; cattle are the main reservoir of this pathogen and therefore the ingestion of food derived from these stock animals are a very important source of infection for man. The main objective of this study was to determine the prevalence of STEC in raw meat samples marketed in Pamplona-Colombia and in strains obtained from those samples. One hundred raw meat samples were analyzed using the Polymerase Chain Reaction technique for the detection of the following genes in samples and in STEC strains: stx1, stx2, eae and hlyA. In addition, STEC strains were isolated in 13% of the analyzed samples, 85% of them carried the hlyA gene. The presence of the eae gene or serogroup O157 was not detected. The isolated strains demonstrated resistance against some first and second generation antibiotics. In conclusion, the presence of genes encoding virulence factors in the meat samples analyzed, that represent a potential health risk factor to consumers, was confirmed. This is the first report of STEC non-O157 that encodes the enterohemolysin gene in foods in Colombia(AU)


Assuntos
Bovinos , Resistência Microbiana a Medicamentos , Apoptose , Escherichia coli O157 , Escherichia coli Shiga Toxigênica , Carne , Bacteriologia , Gastroenteropatias
6.
Rev. Inst. Nac. Hig ; 49(1): 6-23, 2018. ilus
Artigo em Espanhol | LILACS, LIVECS | ID: biblio-1096122

RESUMO

Buscando en los registros de las principales actividades de la Gerencia de Diagnóstico y Vigilancia Epidemiológica ha sido difícil elegir entre tantas vivencias, aquellos elementos que marcaron pauta durante la década 2008 ­ 2018. No obstante, es de resaltar que los desafíos afrontados ante la aparición de brotes, epidemias y la primera pandemia del siglo XXI, trajeron consigo un cúmulo de experiencias que se presentan en este artículo. Como centro nacional de referencia en las áreas de Bacteriología, Micología y Virología, continuamos aportando soluciones a la salud pública nacional mediante la actualización profesional de nuestro personal y la formación de la generación de relevo, en la que participan profesionales de excelencia, altamente especializados y sensibilizados con la problemática y los requerimientos de nuestra población. Asimismo, a través de la coordinación, supervisión y evaluación de la Red de laboratorios de salud pública, se contribuye con el fortalecimiento del diagnóstico de enfermedades transmisibles y vigilancia epidemiológica en el país. El trabajo realizado en estos diez años ha sido excelente, crucial y prioritario para enfrentar las emergencias. Debemos seguir trabajando en dos aspectos claves: 1. Mayor integración del laboratorio con el componente epidemiológico y clínico del país para ser más útiles al sistema de salud, y 2. Consolidar la creación del edificio sede del Centro de Diagnóstico de Enfermedades Transmisibles del Instituto Nacional de Higiene "Rafael Rangel" (INHRR), proyecto en el que estamos trabajando con la asesoría de la OPS/OMS.


Looking at the records of the main activities of the Diagnostic and Epidemiological Surveillance Management, it has been difficult to choose between many experiences, those elements that set the standard during the 2008 ­ 2018 decade. However, it is noteworthy that the challenges faced with the emergence of outbreaks, epidemics and the first pandemic of the 21st century, brought with it a wealth of experiences that are presented in this article. As a national reference center in Bacteriology, Mycology and Virology areas, we continue to provide solutions to public health through the professional updating of our staff and formation of the relief generation, in which participate professionals of excellence, highly specialized and sensitized with the problems and requirements of our population. Likewise, through the coordination, supervision and evaluation of the public health laboratories network, it contributes to the strengthening of the communicable diseases diagnosis and epidemiological surveillance in the country. The work done in these ten years has been excellent, crucial and priority to face emergencies. We must continue working on two key aspects: 1. Greater laboratory integration with the epidemiological and clinical component of the country to be more useful to the health system, and 2. Consolidate headquarters building creation of the National Institute of Hygiene "Rafael Rangel" (INHRR) Diagnostic Center for Communicable Diseases, project in which we are working with the PAHO / WHO advice.


Assuntos
Humanos , Masculino , Feminino , Bacteriologia , Virologia , Doenças Transmissíveis/diagnóstico , Instalações de Saúde , Micologia , Saúde Pública , Serviços Laboratoriais de Saúde Pública , História da Medicina , Laboratórios
8.
Acta sci., Biol. sci ; 39(3): 331-334, July-Sept. 2017. ilus, tab
Artigo em Inglês | LILACS | ID: biblio-859959

RESUMO

Stomatitis is a common disease found on snake farms, and Gram-negative bacilli are the main etiological agents that play an important role as secondary sources of viral or parasitic infections. The purpose of this work was to identify the aerobic bacteria in the oral cavity of Bothrops atrox with stomatitis. Samples for microbiological examination were collected from 12 snakes bred on a commercial snake farm for venom extraction. Samples of the secretion in the oral cavity of each serpent presenting stomatitis were collected from fang sheath, using a cotton swab with sterile alginate. The samples were incubated and cultured on Petri dishes containing blood agar and XLD agar using the agar depletion technique. Bacterial growth occurred in all analyzed samples collected from the oral cavity of Bothrops atrox with stomatitis, and some of the samples contained more than one microorganism. The following Gram-negative bacteria were isolated: Escherichia coli (26.31%), Citrobacter spp. (21.05%), Proteus spp. (15.78%) and Salmonella spp. (10.52%). The only Gram-positive bacterium that was isolated was Staphylococcus spp., which was present in 26.31% of the analyzed samples.


A estomatite é uma das doenças mais frequentes em criatórios comerciais de serpentes, sendo os bacilos Gram-negativos os principais agentes etiológicos com importante papel, como fontes secundárias, nas infecções virais ou parasitárias. O objetivo do presente trabalho foi analisar as bactérias aeróbicas presentes na cavidade oral em serpentes da espécie Bothrops atrox. Utilizaram-se 12 amostras colhidas com auxílio de swab estéril na região da bainha da presa, em serpentes que apresentaram estomatite, em um criatório comercial. As amostras foram cultivadas em Ágar-sangue e Ágar XLD. Em todas as amostras analisadas, houve crescimento de, pelo menos, um microrganismo. As bactérias Gram-negativas isoladas foram Escherichia coli (26,31%), Citrobacter spp. (21,05%), Proteus spp. (15,78%) e Salmonella spp. (10,52%). A única bactéria Gram-positiva isolada foi a Staphylococcus spp., presente em 26,31% das amostras analisadas.


Assuntos
Bacteriologia , Doenças Transmissíveis , Répteis
9.
NOVA publ. cient ; 14(26): 103-111, July-Dec. 2016. ilus, tab
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-955173

RESUMO

Objetivo. Determinar las bacterias del aire de un laboratorio de enseñanza de microbiología de la Universidad Distrital y así establecer la posibilidad de riesgo para la salud a la exponen los usuarios por la presencia de estos microorganismos. Métodos. Se tomaron muestras de aire por la técnica de sedimentación, se realizaron recuentos, y caracterización macroscópica y microscópica de las colonias. Después de aislamientos selectivos se llevó a cabo identificación por BD BBL Crystal. Resultados. Se obtuvo mayor recuento de bacterias Gram positivas que de Gram negativas. Se encontraron bacterias de los géneros Micrococcus, Staphylococcus, Leuconostoc, Bacillus, Corynebacterium, Pseudomonas, Yersinia, Serratia, Shigella, Klebsiella, Citrobacter y Acinetobacter. Los resultados mostraron que las bacterias identificadas no suponen riesgo elevado para la salud de los usuarios sanos, pero que es necesario implementar medidas para disminuir la carga bacteriana y disminuir posibles afecciones generales en la salud de sus ocupantes.


Objective. Determine airborne bacteria in a teaching laboratory of microbiology at the Distrital University and establish the bacteriological quality of air which users are exposed. Methods. Air samples were taken by sedimentation technique. The recovered colonies were counted, macroscopic and microscopic characterized and culture in selective media. The isolates were identifies by BD BBL Crystal. Results. It was found greater counts of gram-positive bacteria compared with Gram negative. It was identified bacteria of genus Micrococcus, Staphylococcus, Leuconostoc, Bacillus, Corynebacterium, Pseudomonas, Yersinia, Serratia, Shigella, Klebsiella, Citrobacter and Acinetobacter. The results showed that the bacteria identified do not present high risk to healthy of users, but it is necessary to implement measures to reduce the bacterial presence. Additionally, in this way decrease possible impact in general health of its occupants.


Assuntos
Humanos , Bacteriologia , Qualidade Ambiental , Laboratórios , Microbiologia
10.
Hist. ciênc. saúde-Manguinhos ; 23(3): 733-756, jul.-set. 2016.
Artigo em Português | LILACS | ID: lil-792562

RESUMO

Resumo A teoria dos germes, decorrente, em especial, dos trabalhos de Louis Pasteur e Robert Koch, fez estremecer as bases do saber médico a partir da segunda metade do período oitocentista e promoveu uma revolução na “arte de curar”. A busca por micróbios específicos para as doenças norteou as investigações de pesquisadores convertidos aos dogmas pasteurianos. Este trabalho procura mostrar, em linhas gerais, o papel desempenhado pela Gazeta Médica da Bahia no processo de divulgação da bacteriologia junto às comunidades médicas baiana e nacional. O artigo apresenta alguns trabalhos e reflexões de colaboradores do periódico e destaca algumas controvérsias que ajudaram a traçar um panorama da difusão da teoria dos germes pelo Brasil ao longo do século XIX.


Abstract Germ theory, derived particularly from the work of Louis Pasteur and Robert Koch, shook the foundations of medical knowledge in the second half of the nineteenth century and triggered a revolution in the “art of healing.” The search for specific microbes for diseases guided the investigations of the researchers converted to the Pasteurian tenets. This paper aims to show what role the Gazeta Médica da Bahia journal played in spreading knowledge about bacteriology to the medical communities in Bahia and throughout Brazil. Some works and reflections by the newspaper’s authors at the time are presented, as are some of the controversies that help depict the way germ theory was divulged in Brazil throughout the nineteenth century.


Assuntos
História do Século XIX , Bacteriologia/história , Disseminação de Informação/história , Publicações Periódicas como Assunto/história , Brasil , Teoria do Germe da Doença/história , Disseminação de Informação/métodos , Jornais como Assunto/história
11.
Arch. latinoam. nutr ; 66(1): 60-65, mar. 2016. graf
Artigo em Espanhol | LILACS, LIVECS | ID: biblio-1023472

RESUMO

Listeria monocytogenes es un patógeno causante de enfermedades alimentarias. En la búsqueda de controlar su propagación utilizando sustancias naturales se planteó el objetivo de mostrar si el extracto etanólico foliar de neem (Azadirachta Indica A. Juss.) tiene efecto antimicrobiano sobre L. monocytogenes ICTA-12446. El extracto se obtuvo a partir de hojas de neem sometidas a secado por 8 días, se redujeron de tamaño mecánicamente, se sometieron a maceración en frío por 3 días usando etanol 96% en recipientes ámbar, se filtró y concentró en rota evaporador. Se estandarizó el concentrado con dimetilsulfóxido (DMSO) a una concentración de 60 mg/L. Listeria monocytogenes ICTA-12446, fue inoculado en caldo nutriente junto con soluciones del extracto a diferentes concentraciones (20, 30, 40, 50 y 60 mg/L), se emplearon tiempos de contacto (2.5, 5, 10 y 15 minutos). Cumplido cada tiempo se realizaron diluciones seriadas e inocularon en agar nutritivo por extensión durante 24 h a 37ºC. Se efectuó el recuento en Unidades Formadoras de Colonias UFC. Al comparar las concentraciones del extracto se evidencia entre 20 y 60 mg/mL diferencia significativa, mientras que en 30, 40 y 50 mg/mL un comportamiento similar. Al contrastar tiempos de contacto, se observa que entre el tiempo 2.5 min y los restantes un p=0,03. El tiempo mínimo donde existió inhibición fue 2.5 minutos, y concentración mínima inhibitoria de 20 mg/mL. Los cuatro tiempos de contacto arrojan porcentajes de inhibición microbiana de 100% al emplear 60mg/mL. Se concluye que el extracto etanólico foliar de neem posee un efecto inhibitorio sobre Listeria monocytogenes(AU)


Listeria monocytogenes is a pathogen causing foodborne illness. In seeking to control its spread using natural substances in order to show if the leaf ethanol extract of neem (Azadirachta indica A. Juss) has antimicrobial effect on L. monocytogenes ICTA-12446, was proposed. The extract was obtained from neem leaves, which was subjected to drying for 8 days. It was reduced in size mechanically, and subjected to cold soak for 3 days, using 96% ethanol in amber vessels, filtered and concentrated in rot evaporator. Concentrated was solubilized with dimethylsulfoxide (DMSO) and standarized to achieve a concentration of 60 mg/mL Listeria monocytogenes was inoculated in nutrient broth with extract solutions at different concentrations (20, 30, 40, 50 and 60mg/mL), four contact times (2.5, 5, 10 and 15 minutes) were used. Completed each time it was diluted and inoculated on nutrient agar by extension for 24h at 37ºC. The count of Colony Forming Units UFC was taking. Comparing the concentrations of the extract between 20 and 60mg /mL significant difference was appreciate, while 30, 40 and 50 mg/mL show a similar behavior. Contrasting contact times observed between time 2.5 min and the remaining p = 0.03. The minimum time where there was some kind of inhibition was 2.5 minutes, and minima inhibitory concentration of 20mg/mL. The four contact times yield microbial inhibition percentages of 100% by using 60mg/L. It is concluded that ethanol extract of neem leaf has an inhibitory effect on L. monocytogenes(AU)


Assuntos
Humanos , Masculino , Feminino , Bacilos Gram-Negativos Anaeróbios Facultativos/fisiologia , Azadirachta/fisiologia , Etanol/química , Manipulação de Alimentos/métodos , Listeria monocytogenes , Bacteriologia , Efeitos Fisiológicos de Drogas
12.
Rev. cientif. cienc. med ; 19(2): 38-42, 2016. ilus
Artigo em Espanhol | LILACS, LIBOCS | ID: biblio-959719

RESUMO

El Staphylococcus aureus es una bacteria grampositiva, catalasa-positiva dispuestas en racimos, los factores de virulencia incluyen componentes estructurales que facilitan la adherencia a los tejidos del hospedador, Específicamente a la miel se le han reconocido propiedades medicinales desde la antigüedad: como tratamiento terapéutico contra infecciones causadas por bacterias en heridas abiertas, ulceras, quemaduras e infecciones oculares. Objetivo: Determinar la actividad antibacteriano de la miel de abeja en sus diferentes concentraciones frente al Staphylococcus aureus. El estudio es Experimental, prospectivo y transversal. Se basó en la utilización de 6 cultivos de Staphylococcus aureus en caldo nutritivo con una determinadas cantidad de colonias a las cuales se aplicó miel de abeja en concentraciones de 30%, 60% y 100% que se dejó incubar por 24 horas para luego observar el efecto antibacteriano a través de un cultivo en agar sangre en otras 24 hrs. Comprobamos que la actividad bactericida de la miel frente al Staphylococcus Aureus es muy efectiva siendo esta una alternativa de tratamiento frente a dicha bacteria y se pudo constatar que la miel de abeja a una mayor concentración produce mayor efecto antibacteriano sobre el Staphylococcus aureus.


Staphylococcus aureus is a gram-positive, catalase-positive bacterium arranged in clusters, virulence factors include structural components that facilitate adhesion to host tissues. Specifically honey has been recognized medicinal properties since antiquity:as a therapeutic treatment against Infections caused by bacteria in open wounds, ulcers, burns and eye infections. Objective: To determine the antibacterial activity of honey in its concentrations against Staphylococcus aureus. The study is Experimental, Prospective and Transverse. It was based on the use of 6 cultures of Staphylococcus aureus in nutritive broth with a certain amount of colonies to which bee honey was applied in concentrations of 30%, 60% and 100% that was allowed to incubate for 24 hours and then observed Antibacterial effect through a culture in blood agar in another 24 hrs. We verified that the bactericidal activity of the honey against the Staphylococcus Aureus is very effective being this one alternative of treatment against this bacterium and it was verified that the honey of bee to a greater concentration produces greater antibacterial effect on the Staphylococcus aureus.


Assuntos
Staphylococcus aureus , Bacteriologia , Mel
14.
Arq. bras. med. vet. zootec ; 66(5): 1585-1591, Sep-Oct/2014. graf
Artigo em Português | LILACS | ID: lil-729747

RESUMO

O objetivo do presente trabalho foi utilizar métodos bacteriológicos e moleculares para a identificação do Mycobacterium bovis em lesões observadas em carcaças de bovinos durante a inspeção post mortem de rotina em matadouros-frigoríficos com serviço de inspeção oficial. Foram acompanhados o abate e a inspeção de 825.394 bovinos, sadios, ao exame ante mortem pelo serviço de inspeção oficial em 10 matadouros-frigoríficos do estado da Bahia, entre abril de 2009 e abril de 2012. Cento e oitenta bovinos apresentaram lesões sugestivas de tuberculose e outras linfadenites, as quais foram avaliadas quanto à presença de Mycobacterium bovis por exame bacteriológico e pela PCR multiplex. A maioria das lesões estava localizada em linfonodos do trato respiratório e 71% eram provenientes de bovinos machos com até 32 meses de idade. No isolamento bacteriano, 13,9% (25/180) das amostras apresentavam colônias pequenas, de superfície granular e de coloração creme-amareladas, em meio de cultura Stonebrink-Leslie, e o crescimento médio foi de 34 dias. Todos os esfregaços dos isolados evidenciaram BAAR, e, pela PCR multiplex, 56% (14/25) dos isolados foram identificados como M. bovis. A associação entre exame post mortem, bacteriológico e PCR multiplex permitiu a identificação do agente de forma rápida e em regiões com status sanitário de baixa prevalência, demonstrando ser importante para a detecção dos focos de tuberculose bovina e o auxílio nos programas de controle e erradicação da tuberculose...


The aim of the present study was to perform bacteriological and molecular methods for identification of Mycobacterium bovis in lesions derived from bovine carcasses detected during routine post-mortem examination in officially inspected slaughterhouses. We checked the slaughter and inspection of 825,394 bovines, health upon ante-mortem examination, by the official service in 10 slaughterhouses of Bahia state from April, 2009 to April 2012. Lesions suggestive of tuberculosis were collected from 180 bovines and further evaluated by bacteriology and multiplex PCR. The majority of lesions were located in the respiratory tract lymph nodes and 71% were from male bovines up to 32 months old. 13.9% of samples presented small, granular and creamy-yellowish colonies after being cultured in Stonebrink-Leslie with an average growth time of 34 days. All smears from the isolated samples were Acid Fast Bacilli (AFB) and among them 56% were identified by mPCR as M. bovis. Thus, the association between post-mortem examination, culture and multiplex PCR allowed the bacillus identification in a reduced time and in regions of low prevalence, pointing out its importance for bovine tuberculosis detection and as a supportive tool for the tuberculosis control and eradication program...


Assuntos
Animais , Bovinos , Bacteriologia , Modelos Moleculares , Mycobacterium bovis , Inspeção Sanitária , Matadouros , Abate de Animais , Inspeção de Alimentos , Reação em Cadeia da Polimerase , Tuberculose Bovina
18.
São Paulo; s.n; 2014. 81 p. ilus, tab. (BR).
Tese em Português | LILACS, BBO - Odontologia | ID: biblio-867368

RESUMO

A interface do implante com o componente protético geralmente apresenta lacunas que servem de nichos para a colonização bacteriana. A proposta deste estudo é verificar a eficácia do dimetacrilato na vedação desta interface. Foram utilizados 20 implantes ósseos Bone Level® Straumann, indicados para reabilitação protética unitária cimentada. Os pilares protéticos foram instalados nos grupos controle e experimental, adicionando-se o dimetacrilato à interface da conexão protética. Foram realizadas uma coleta inicial e uma coleta ao final do período de 90 dias no interior de cada implante, e através da técnica de PCR quantitativo foi analisada a infiltração e a detecção das espécies bacterianas Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia. No Grupo Controle, todas as amostras apresentaram quantificação de microrganismos, confirmando infiltração bacteriana. No Grupo Experimental, apenas 30% das amostras apresentou quantificação após o período estudado. Assim, a ausência de bactérias no Grupo Experimental foi associada ao tratamento com o dimetacrilato para o período. Quando considerada a presença de pelo menos uma das bactérias específicas estudadas nas amostras, a diferença também foi estatisticamente significante. Entretanto, mais estudos devem ser desenvolvidos a fim de verificar se a vedação será eficiente por períodos mais longos.


The implant/prosthetic component interface often has gaps that serve as niches for bacterial colonization. The purpose of this study is to verify the effectiveness sealing this interface with dimethacrylate. Twenty two Straumann ® Bone Level implants was installed in areas with indication for single cemented prosthetic rehabilitation. The prosthetic components were installed in the control and experimental groups following the fabricant instructions, and adding the dimethacrylate in the interface of the experimental group. An initial collection and a second collection at the end of 90 days within each implant were performed, and after that, the technique of quantitative PCR was developed to analyze whether there was infiltration and detection of four bacterial species: Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia. In the control group, all samples showed quantification of microorganisms, confirming bacterial percolation. In the control group, only 30% of the samples submitted quantification after the study period. Thus, the absence of bacteria in the experimental group was associated with the treatment for the period dimethacrylate. Considering the presence of at least one specific bacteria in the samples studied, the difference was also statistically significant. However, more studies should be conducted to verify that the seal will be effective for longer periods.


Assuntos
Bacteriologia , Implantação Dentária/métodos , Implantação Dentária , Infiltração Dentária/complicações , Infiltração Dentária/diagnóstico , Reação em Cadeia da Polimerase/métodos
19.
Artigo em Espanhol | LILACS | ID: lil-778006

RESUMO

La Actinomicosis Periapical es una lesión asociada con infecciones producidas por especies de Actinomyces y se ha considerado un factor en la perpetuación de las radiolucencias periapicales después de los tratamientos endodóncicos. El objetivo de esta revisión es dar a conocer la frecuencia de especies de Actinomices en la Actinomicosis Periapical...


Periapical Actinomycosis is a periapical lesion associated with infections caused by Actinomyces species and has been considered a contributing factor in the perpetuation of periapical radiolucencies after root canals. The objective of this review is to present frequency of Actinomyces species in Periapical Actinomycosis...


Assuntos
Humanos , Masculino , Feminino , Actinomicose/fisiopatologia , Bacilos Gram-Positivos/crescimento & desenvolvimento , Doenças da Polpa Dentária/diagnóstico , Doenças da Polpa Dentária/virologia , Infecções dos Tecidos Moles , Actinomyces , Bacteriologia , Cavidade Pulpar , Endodontia , Infectologia
20.
An. venez. nutr ; 26(2): 106-111, dic. 2013. graf
Artigo em Espanhol | LILACS, LIVECS | ID: lil-746261

RESUMO

Cronobacter sakazakii (C. sakazakii) es un microorganismo perteneciente a la familia Enterobacteriaceae asociado con patologías como meningitis y septicemia en recién nacidos. Las fórmulas lácteas infantiles (FLI) han sido reconocidas como el vehículo más importante de transmisión de C. sakazakii, por condiciones inadecuadas durante su producción o preparación. El objetivo de la presente investigación fue evaluar el efecto de la temperatura de refrigeración y el calentamiento de las FLI en el crecimiento de C. sakazakii. Las muestras de FLI reconstituidas se contaminaron con 102, 104 y 106 UFC/mL de C. sakazakii y se refrigeraron durante cuatro horas a 4°C, 6°C y 10°C, posterioriormente, se calentaron en baño hidrotérmico hasta 37°C. Las muestras fueron sembradas al tiempo “0” (postrefrigeración) y luego del calentamiento hasta 37°C en placas con agar cromogénico y se incubaron a 35°C por 24h. Para el análisis de los datos se utilizó la prueba de Wilcoxon. Según los datos obtenidos no hubo variación significativa en la población de C. sakazakii en las FLI luego de 4 horas en refrigeración a 4°C, 6°C y 10°C; sin embargo, al calentar las fórmulas hasta 37°C, hubo en todos los casos una reducción de un ciclo logarítmico en la población de C. sakazakii con un valor de p = 0.0056 y Z= 2.752. Se concluye que el calentamiento a 37°C post-refrigeracion de las muestras, disminuye la población de C. sakazakii en FLI (p<0,05)(AU)


Cronobacter sakazakii (C. sakazakii) is a microorganism belonging to the family Enterobacteriaceae associated with diseases such as meningitis and sepsis in newborns. The powdered infant formula (PIF) have been recognized as the most important vehicle of transmission of C. sakazakii, by inadequate conditions during production or during its preparation. The aim of this investigation was to assess the effect of the cooling temperature and the heating of PIF in the growth of C. sakazakii. For this, PIF reconstituted samples were contaminated with 102, 104 and 106 CFU / mL of C. sakazakii and refrigerated for four hours at 4 ° C, 6 ° C or 10 ° C after this hydrothermal bath heated to 37 ° C. Samples were cultured at time “0” (after- cooling) and then heating to 37 ° C in chromogenic agar plates and incubated at 35 ° C for 24h . For data analysis we used the Wilcoxon test. According to the data there was no significant variation in the population of C. sakazakii in PIF after 4 hours in the refrigerator at 4 ° C, 6°C and 10 ° C , however , by heating the formulas to 37 ° C , in all cases there was a reduction of one log cycle in population C. sakazakii with a value of p = 0.0056 and Z = 2.752 . We conclude that heating at 37°C post- cooling of the samples, decreases the population of C. sakazakii in FLI ( p < 0,05 )(AU)


Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Cronobacter sakazakii , Enterocolite/etiologia , Padrão de Identidade e Qualidade para Produtos e Serviços , Meningite/etiologia , Bacteriologia , Alimentos Resfriados , Manipulação de Alimentos
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