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Registros recuperados: 13
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Bacillus larvae : its cultivation in vitro and its growth in vivo National Institute of Agronomic Research
Bailey, L.; Lee, D.C..
Spores of Bacillus larvae White germinate and make initial vegetative growth best in a limited range of low redox potentials, but later growth and sporulation occur best aerobically. Different media needed for best results with each phase of development of the bacillus are described. Spores of B. larvae germinate in the mid-gut contents of honey-bee larvae up to 2 days old. The vegetative forms then migrate and become closely applied to, but do not penetrate, the mid-gut epithelium. Most organisms seem to be voided with the contents of the intestine when an infected larva defaecates shortly before it pupates. A few organisms are presumably left in the intestine and probably invade the tissues of the larva as it pupates.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; BACILLUS LARVAE; IN VITRO SPORULATION; IN VIVO GERMINATION; MIDGUT; LARVAE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; BACILLUS LARVAE; IN VITRO SPORULATION; IN VIVO GERMINATION; INTESTIN; LARVE.
Ano: 1962 URL: http://hdl.handle.net/2174/506
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Conjugated action of two species-specific invasion proteins for fetoplacental listeriosis Inra
Disson, O.; Grayo, S.; Huillet, E.; Nikitas, G.; Langa-Vives, F.; Dussurget, O.; Ragon, M.; Le Monnier, A.; Babinet, C.; Cossart, P.; Lecuit, M..
The ability to cross host barriers is an essential virulence determinant of invasive microbial pathogens. Listeria monocytogenes is a model microorganism that crosses human intestinal and placental barriers, and causes severe maternofetal infections by an unknown mechanism(1). Several studies have helped to characterize the bacterial invasion proteins InlA and InlB(2). However, their respective species specificity has complicated investigations on their in vivo role(3,4). Here we describe two novel and complementary animal models for human listeriosis: the gerbil, a natural host for L. monocytogenes, and a knock-in mouse line ubiquitously expressing humanized E-cadherin. Using these two models, we uncover the essential and interdependent roles...
Tipo: Journal Article Palavras-chave: LISTERIA MONOCYTOGENES; BARRIERE PLACENTAIRE; PROTEINE BACTERIENNE; VIRULENCE; AGENT PATHOGENE; MODELISATION; MICROORGANISME; INFECTION; MALADIE HUMAINE; INTESTIN.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009460b2e42&uri=/notices/prodinra1/2009/11/
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Etude à l'aide du phosphore radioactif (P32) de la vitesse de passage d'un aliment liquide dans les diverses parties de l'intestin de l'abeille National Institute of Agronomic Research
Zhdanov, S. V.; Dolotovskaya, U.A.; Kozyrev, E.M..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; INTESTINE; TRANSIT; DURATION; RADIOACTIVE PHOSPHORUS; ABEILLE DOMESTIQUE; INSECTE SOCIAL; INTESTIN; ALIMENT LIQUIDE; TRANSIT; VITESSE; PHOSPHORE RADIOACTIF.
Ano: 1956 URL: http://hdl.handle.net/2174/373
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Functional genomic studies of the intestinal response to a foodborne enteropathogen in a humanized gnotobiotic mouse model Inra
Lecuit, M.; Sonnenburg, J. L.; Cossart, P.; Gordon, J. I..
Members of the genus Listeria provide a model for defining host responses to invasive foodborne enteropathogens. Active translocation of Listeria monocytogenes across the gut epithelial barrier is mediated by interaction of bacterial internalin (InlA) and its species-specific host receptor, E-cadherin, whereas translocation across Peyer’s patches through M-cells is InlA independent. To define microbial determinants and molecular correlates of the host response to translocation via these two routes, we colonized germ-free transgenic mice expressing the human enterocyte-associated E-cadherin receptor with wildtype (WT) or mutant L. monocytogenes strains, or its nonpathogenic noninvasive relative Listeria innocua, or with Bacteroides thetaiotaomicron, a...
Tipo: Journal Article Palavras-chave: LISTERIA MONOCYTOGENES; CADHERINE; BARRIERE INTESTINALE; LAMINA PROPRIA; PROTEINE BACTERIENNE; INTESTIN; MODELE ANIMAL; SOURIS; INFECTION; ENTEROPATHOGENE; MUTATION; EXPRESSION DES GENES; REPONSE IMMUNITAIRE; IMMUNITE.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200924d16b14&uri=/notices/prodinra1/2010/11/
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Genesis of acetate and methane by gut bacteria of nutritionally diverse termites IRD
Brauman, Alain; Kane, M.D.; Labat, Marc; Breznak, A..
Tipo: Text Palavras-chave: SYMBIOSE; TERMITE; MICROFLORE; FERMENTATION; ACETATE; METHANOGENESE; METHANE; ATMOSPHERE; BACTERIE SYMBIOTIQUE; REGIME ALIMENTAIRE; INTESTIN; BACTERIE ANAEROBIE.
Ano: 1992 URL: http://www.documentation.ird.fr/hor/fdi:41227
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I microbi dell'ape regina (Apis mellifica L.) — La flora microbica del mesointestino National Institute of Agronomic Research
Vecchi, Maria Adelaide; Zambonelli, Carlo.
The bacterial flora of the mid-gut of a lot of 100 queen-bees in normal health conditions and taken from different hives was investigated. From 44 queens, 62 isolates of aerobic bacteria were obtained: among them 41 strains were recognized as representatives of the genus Achromobacter while other 18 belong undoutebly to the genus Brevibacterium. The frequency of their incidence in the midguts, the diversity in hosts provenience and the largerly variable conditions of their sampling and expedition are elements sufficient to warrant the conclusion that the bacteria are not harboured incidentally in the mid-gut of these insects but they may multiply although moderately or at least survive in this habitat without any damage fr host organism.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; QUEEN; MIDGUT; BACTERIAL FLORA; ACHROMOBACTER; BREVIBACTERIUM; ABEILLE; REINE; INTESTIN; FLORE INTESTINALE; BACTERIE; ACHROMOBACTER.
Ano: 1962 URL: http://hdl.handle.net/2174/511
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In vitro and in vivo characterization of the intestine of fifteen bacteriophagous nematodes (Nematoda : Rhabditida) IRD
Borgonie, G.; Clayes, M.; De Waele, D.; Coomans, A..
L'intestin de quinze espèces de Rhabditides libres appartenant à trois familles différentes a été étudié à l'aide de trois méthodes : i) essai d'utilisation de trois milieux axéniques différents pour l'élevage des quinze espèces; ii) analyses in vivo à l'aide de trois colorants vitaux et d'une substance fluorescente avec comparaison des figures ainsi obtenues; iii) analyses in vitro en utilisant des marqueurs intestinaux ; phosphatase acide, estérase et lectine #Ricinus communis$ II. Bien que les nématodes puissent être maintenus en élevage monoxénique à l'aide de la même bactérie, #Escherichia coli$, les tentatives d'élevage des quinze espèces sur le même milieu axénique ont échoué. Les études in vivo à l'aide de colorant ont révélé de nettes différences...
Tipo: Text Palavras-chave: NEMATODE; BACTERIOPHAGE; ANATOMIE ANIMALE; EXPERIMENTATION IN VITRO; EXPERIMENTATION IN VIVO; MARQUAGE; INTESTIN; COLORATION.
Ano: 1995 URL: http://www.documentation.ird.fr/hor/fdi:42716
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Le parasite Plasmodium est-il pathogène pour le moustique ? IRD
Maier, W.A..
Tipo: Text Palavras-chave: PALUDISME; PATHOLOGIE; VECTEUR; TEMPERATURE; MICROFLORE; RELATION PARASITE VECTEUR; INTESTIN.
Ano: 1980 URL: http://www.documentation.ird.fr/hor/fdi:19238
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Listeria monocytogenes internalins bind to the human intestinal mucin MUC2 Inra
Lindén, S. K.; Bierne, H.; Sabet, C.; Png, C. W.; Florin, T. H.; McGuckin, M. A.; Cossart, P..
Listeria monocytogenes cross the intestinal barrier causing systemic infections with high mortality rates. Intestinal infection triggers release of intestinal mucus. We show that three L. monocytogenes internalins, InlB, InlC and InlJ all bound to MUC2 (the major component of intestinal mucus), but not to the cell surface mucin MUC1. Binding was strongest to InlB>InlC>InlJ (P < 0.001). Listerial internalins are characterized by their internalin domain, composed by leucine rich repeats (LRR) followed by an immunogloblin-like region. We report here that the internalin domain of the InlJ protein also bound MUC2, suggesting that an internalin domain is sufficient to bind to MUC2.
Tipo: Journal Article Palavras-chave: LISTERIA MONOCYTOGENES; BACTERIE; MUCINE; HOMME; INTESTIN; INFECTION; MUCUS; PROTEINE; LEUCINE; ACIDE AMINE; SURFACE CELLULAIRE; REACTION ANTIGENE ANTICORPS LISTERIA; LRRR; MUCIN; MUCUS; MUC2; MUC1.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20091b0155aa&uri=/notices/prodinra1/2010/10/
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Presence of peritrophic-like membranes in the intestine of three bacteriophagous nematodes (Nematoda : Rhabditida) IRD
Borgonie, G.; Claeys, M.; Vanfleteren, J.; De Waele, D.; Coomans, A..
Chez trois nématodes Rhabdities, #Caenorhabditis elegans, Panagrolaimus superbus$ et #Acrobeloides maximus$, les analyses ultrastructurales ont démontré la présence d'une membrane prenant naissance à l'extrémité des microvillosités intestinales, et ce sur l'entière longueur de l'intestin. Ces membranes permettent le passage de l'isothiocyanate de fluorescéine, du rouge de méthyle, du rouge neutre et de l'orange d'acridine, mais un passage très limité des molécules de ferritine. Après introduction d'une dose subléthale d'azide de sodium, la lumière intestinale est le siège d'une augmentation de la sécrétion des couches de la membrane. Des colorations #in toto$ des nématodes avec des lectines provenant de #Solanum tuberosum$ et #Triticum vulgare$, connues...
Tipo: Text Palavras-chave: NEMATODE; BACTERIOPHAGE; ULTRASTRUCTURE; MICROSCOPIE ELECTRONIQUE A TRANSMISSION; INTESTIN; COLORATION; LECTINE.
Ano: 1995 URL: http://www.documentation.ird.fr/hor/fdi:42729
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Recherches sur les corpuscules calcaires dans l'intestin de l'abeille National Institute of Agronomic Research
Fyg, W..
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; SOCIAL INSECT; APIS MELLIFERA; APIDAE; APOIDEA; HYMENOPTERA; POLLINATOR; GUT; CALCAREOUS CORPUSCLE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; APIS MELLIFERA; APIDAE; APOIDEA; HYMENOPTERA; POLLINISATEUR; INTESTIN; CALCAIRE.
Ano: 1932 URL: http://hdl.handle.net/2174/300
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Ultrastructure du contenu digestif et de l'épithélium intestinal chez quelques nématodes prédateurs (Mononchida) et bactériophages IRD
Arpin, P.; Kilbertus, G..
Tipo: Text Palavras-chave: ULTRASTRUCTURE; MICROSCOPIE ELECTRONIQUE A TRANSMISSION; NEMATODE; PREDATEUR; BACTERIOPHAGE; INTESTIN; REGIME NUTRITIONNEL; MONONCHIDE.
Ano: 1981 URL: http://www.documentation.ird.fr/hor/fdi:00472
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Ultrastructure of the intestine of the bacteriophagous nematodes Caenorhabditis elgans, Panagrolaimus superbus and Acrobeloides maximus (Nematoda : Rhabditida) IRD
Borgonie, G.; Clayes, M.; De Waele, D.; Coomans, A..
L'intestin de trois nématodes libres - "Caenorhabditis elegans, panagrolaimus superbus$ et #Acrobeloides maximus$ - a été étudié en microscopie électronique à transmission sur des sections réalisées en trois localisations différentes. Entre les trois espèces, les différences ultrastructurales concernant les éléments cellulaires sont faibles encore que les deux types de cellules présents chez les trois espèces soient positionnés différemment sur le trajet de l'intestin. De plus, deux types de substances sécrétées dans la lumière intestinale ont été identifiés, l'un uniquement dans l'intestin antérieur, l'autre tout le long de l'intestin. Des colorations in toto de quinze nématodes à l'aide de la F-actine, ont révélé la présence d'un muscle intestinal bien...
Tipo: Text Palavras-chave: NEMATODE; BACTERIOPHAGE; ULTRASTRUCTURE; MICROSCOPIE ELECTRONIQUE A TRANSMISSION; INTESTIN; COLORATION.
Ano: 1995 URL: http://www.documentation.ird.fr/hor/fdi:42717
Registros recuperados: 13
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