Base de dados : MEDLINE
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[PMID]:29185932
[Au] Autor:Granja-Salcedo YT; Duarte Messana J; Carneiro de Souza V; Lino Dias AV; Takeshi Kishi L; Rocha Rebelo L; Teresinha Berchielli T
[Ad] Endereço:1Department of Animal Science,School of Agricultural and Veterinarian Sciences,Universidade Estadual Paulista (UNESP),via de Acesso Professor Paulo Donato Castellane s/n,Jaboticabal,São Paulo,14884-900,Brazil.
[Ti] Título:Effects of partial replacement of maize in the diet with crude glycerin and/or soyabean oil on ruminal fermentation and microbial population in Nellore steers.
[So] Source:Br J Nutr;118(9):651-660, 2017 Nov.
[Is] ISSN:1475-2662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The objective of this study was to determine whether a combination of crude glycerin (CG) and soyabean oil (SO) could be used to partially replace maize in the diet of Nellore steers while maintaining optimum feed utilisation. Eight castrated Nellore steers fitted with ruminal and duodenal cannulas were used in a double 4×4 Latin square design balanced for residual effects, in a factorial arrangement (A×B), when factor A corresponded to the provision of SO, and factor B to the provision of CG. Steers feed SO and CG showed similar DM intake, DM, organic matter and neutral-detergent fibre digestibility to that of steers fed diets without oil and without glycerine (P>0·05). Both diets with CG additions reduced the acetate:propionate ratio and increased the proportion of iso-butyrate, butyrate, iso-valerate and valerate (P<0·05). Steers fed diets containing SO had less total N excretion (P<0·001) and showed greater retained N expressed as % N intake (P=0·022). SO and CG diet generated a greater ruminal abundance of Prevotella, Succinivibrio, Ruminococcus, Syntrophococcus and Succiniclasticum. Archaea abundance (P=0·002) and total ciliate protozoa were less in steers fed diets containing SO (P=0·011). CG associated with lipids could be an energy source, which is a useful strategy for the partial replacement of maize in cattle diets, could result in reduced total N excretion and ruminal methanogens without affecting intake and digestibility.
[Mh] Termos MeSH primário: Fenômenos Fisiológicos da Nutrição Animal
Bovinos/fisiologia
Glicerol/administração & dosagem
Rúmen/microbiologia
Óleo de Soja/administração & dosagem
Zea mays
[Mh] Termos MeSH secundário: Ração Animal/análise
Animais
Bovinos/microbiologia
Clostridiales/isolamento & purificação
Clostridiales/metabolismo
Dieta/veterinária
Digestão
Fermentação
Masculino
Prevotella/isolamento & purificação
Prevotella/metabolismo
Rúmen/metabolismo
Ruminococcus/isolamento & purificação
Ruminococcus/metabolismo
Succinivibrionaceae/isolamento & purificação
Succinivibrionaceae/metabolismo
Veillonellaceae/isolamento & purificação
Veillonellaceae/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
8001-22-7 (Soybean Oil); PDC6A3C0OX (Glycerol)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171211
[Lr] Data última revisão:
171211
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171130
[St] Status:MEDLINE
[do] DOI:10.1017/S0007114517002689


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[PMID]:28651136
[Au] Autor:Lehtinen T; Efimova E; Tremblay PL; Santala S; Zhang T; Santala V
[Ad] Endereço:Tampere University of Technology, Department of Chemistry and Bioengineering, Korkeakoulunkatu 8, 33720 Tampere, Finland. Electronic address: tapio.lehtinen@tut.fi.
[Ti] Título:Production of long chain alkyl esters from carbon dioxide and electricity by a two-stage bacterial process.
[So] Source:Bioresour Technol;243:30-36, 2017 Nov.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Microbial electrosynthesis (MES) is a promising technology for the reduction of carbon dioxide into value-added multicarbon molecules. In order to broaden the product profile of MES processes, we developed a two-stage process for microbial conversion of carbon dioxide and electricity into long chain alkyl esters. In the first stage, the carbon dioxide is reduced to organic compounds, mainly acetate, in a MES process by Sporomusa ovata. In the second stage, the liquid end-products of the MES process are converted to the final product by a second microorganism, Acinetobacter baylyi in an aerobic bioprocess. In this proof-of-principle study, we demonstrate for the first time the bacterial production of long alkyl esters (wax esters) from carbon dioxide and electricity as the sole sources of carbon and energy. The process holds potential for the efficient production of carbon-neutral chemicals or biofuels.
[Mh] Termos MeSH primário: Dióxido de Carbono
Ésteres
[Mh] Termos MeSH secundário: Fenômenos Fisiológicos Bacterianos
Reatores Biológicos
Eletricidade
Veillonellaceae
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Esters); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171023
[Lr] Data última revisão:
171023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170627
[St] Status:MEDLINE


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[PMID]:28279911
[Au] Autor:Aryal N; Tremblay PL; Lizak DM; Zhang T
[Ad] Endereço:The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark.
[Ti] Título:Performance of different Sporomusa species for the microbial electrosynthesis of acetate from carbon dioxide.
[So] Source:Bioresour Technol;233:184-190, 2017 Jun.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Sporomusa ovata DSM-2662 produces high rate of acetate during microbial electrosynthesis (MES) by reducing CO with electrons coming from a cathode. Here, we investigated other Sporomusa for MES with cathode potential set at -690mVvsSHE to establish if this capacity is conserved among this genus and to identify more performant strains. S. ovata DSM-2663 produced acetate 1.8-fold faster than S. ovata DSM-2662. On the contrary, S. ovata DSM-3300 was 2.7-fold slower whereas Sporomusa aerivorans had no MES activity. These results indicate that MES performance varies among Sporomusa. During MES, electron transfer from cathode to microbes often occurs via H . To establish if efficient coupling between H oxidation and CO reduction may explain why specific acetogens are more productive MES catalysts, the metabolisms of the investigated Sporomusa were characterized under H :CO . Results suggest that other phenotypic traits besides the capacity to oxidize H efficiently are involved.
[Mh] Termos MeSH primário: Dióxido de Carbono/metabolismo
Veillonellaceae
[Mh] Termos MeSH secundário: Acetatos/metabolismo
Eletrodos
Oxirredução
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170605
[Lr] Data última revisão:
170605
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170311
[St] Status:MEDLINE


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[PMID]:27390077
[Au] Autor:Tito RY; Cypers H; Joossens M; Varkas G; Van Praet L; Glorieus E; Van den Bosch F; De Vos M; Raes J; Elewaut D
[Ad] Endereço:Katholieke Universiteit Leuven and Vlaams Instituut voor Biotechnologie Center for the Biology of Disease, Leuven, Belgium, and Vrije Universiteit Brussel, Brussels, Belgium.
[Ti] Título:Brief Report: Dialister as a Microbial Marker of Disease Activity in Spondyloarthritis.
[So] Source:Arthritis Rheumatol;69(1):114-121, 2017 Jan.
[Is] ISSN:2326-5205
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: Dysbiosis of the intestinal microbiota has been widely established in inflammatory bowel disease (IBD). There is significant clinical and genetic overlap between spondyloarthritis (SpA) and IBD, and up to 50% of all patients with SpA exhibit microscopic signs of bowel inflammation, often bearing particular resemblance to early Crohn's disease, a subtype of IBD. This study was undertaken to assess the relationship between intestinal microbial composition, gut histology, and disease activity markers in SpA. METHODS: Gene analysis by 16S ribosomal RNA amplicon sequencing was used to compare the microbial composition in ileal and colonic biopsy specimens from 27 patients with SpA (14 with microscopic bowel inflammation, 13 without) and 15 healthy control subjects (ileal samples from all 15 subjects and colonic samples from 6). Spearman's rank correlation tests were used to assess correlations of the microbial composition with disease activity measures. RESULTS: The intestinal inflammation status (histologically normal versus acute or chronic inflammation) was strongly associated with the mucosal microbiota profile of patients with SpA. In inflamed biopsy tissue, the detected bacterial community composition clustered separately from that in noninflamed biopsy tissue (P < 0.05 by permutational multivariate analysis of variance, using hierarchical clustering on Bray-Curtis distances). Interestingly, abundance of the genus Dialister was found to be positively correlated with the Ankylosing Spondylitis Disease Activity Score (Spearman's rho = 0.62, false discovery rate-corrected q < 0.01). This finding was further supported by the low frequency of Dialister observed in noninflamed ileal and colonic biopsy tissue from patients with SpA and healthy controls. CONCLUSION: These findings demonstrate a significant difference in the intestinal microbial composition in patients with SpA who have microscopic gut inflammation compared to those without microscopic gut inflammation. Moreover, Dialister may represent a potential microbial marker of disease activity in SpA.
[Mh] Termos MeSH primário: Colo/microbiologia
Íleo/microbiologia
Inflamação/microbiologia
Espondilartrite/microbiologia
Veillonellaceae/isolamento & purificação
[Mh] Termos MeSH secundário: Feminino
Seres Humanos
Masculino
Espondilartrite/diagnóstico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170707
[Lr] Data última revisão:
170707
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:160709
[St] Status:MEDLINE
[do] DOI:10.1002/art.39802


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[PMID]:27974055
[Au] Autor:Pedersen C; Gallagher E; Horton F; Ellis RJ; Ijaz UZ; Wu H; Jaiyeola E; Diribe O; Duparc T; Cani PD; Gibson GR; Hinton P; Wright J; La Ragione R; Robertson MD
[Ad] Endereço:1Faculty of Health and Medical Sciences,University of Surrey,Guildford GU2 7XH,UK.
[Ti] Título:Host-microbiome interactions in human type 2 diabetes following prebiotic fibre (galacto-oligosaccharide) intake.
[So] Source:Br J Nutr;116(11):1869-1877, 2016 Dec.
[Is] ISSN:1475-2662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Aberrant microbiota composition and function have been linked to several pathologies, including type 2 diabetes. In animal models, prebiotics induce favourable changes in the intestinal microbiota, intestinal permeability (IP) and endotoxaemia, which are linked to concurrent improvement in glucose tolerance. This is the first study to investigate the link between IP, glucose tolerance and intestinal bacteria in human type 2 diabetes. In all, twenty-nine men with well-controlled type 2 diabetes were randomised to a prebiotic (galacto-oligosaccharide mixture) or placebo (maltodextrin) supplement (5·5 g/d for 12 weeks). Intestinal microbial community structure, IP, endotoxaemia, inflammatory markers and glucose tolerance were assessed at baseline and post intervention. IP was estimated by the urinary recovery of oral 51Cr-EDTA and glucose tolerance by insulin-modified intravenous glucose tolerance test. Intestinal microbial community analysis was performed by high-throughput next-generation sequencing of 16S rRNA amplicons and quantitative PCR. Prebiotic fibre supplementation had no significant effects on clinical outcomes or bacterial abundances compared with placebo; however, changes in the bacterial family Veillonellaceae correlated inversely with changes in glucose response and IL-6 levels (r -0·90, P=0·042 for both) following prebiotic intake. The absence of significant changes to the microbial community structure at a prebiotic dosage/length of supplementation shown to be effective in healthy individuals is an important finding. We propose that concurrent metformin treatment and the high heterogeneity of human type 2 diabetes may have played a significant role. The current study does not provide evidence for the role of prebiotics in the treatment of type 2 diabetes.
[Mh] Termos MeSH primário: Diabetes Mellitus Tipo 2/complicações
Disbiose/dietoterapia
Microbioma Gastrointestinal/fisiologia
Interações Hospedeiro-Patógeno
Prebióticos
Trissacarídeos/uso terapêutico
[Mh] Termos MeSH secundário: Adulto
Idoso
Biomarcadores/sangue
Estudos de Coortes
Diabetes Mellitus Tipo 2/tratamento farmacológico
Diabetes Mellitus Tipo 2/microbiologia
Método Duplo-Cego
Disbiose/complicações
Disbiose/metabolismo
Disbiose/microbiologia
Endotoxemia/complicações
Endotoxemia/imunologia
Endotoxemia/microbiologia
Endotoxemia/prevenção & controle
Seguimentos
Microbioma Gastrointestinal/efeitos dos fármacos
Interações Hospedeiro-Patógeno/efeitos dos fármacos
Seres Humanos
Hipoglicemiantes/efeitos adversos
Hipoglicemiantes/uso terapêutico
Mediadores da Inflamação/sangue
Resistência à Insulina
Mucosa Intestinal/efeitos dos fármacos
Mucosa Intestinal/imunologia
Mucosa Intestinal/metabolismo
Mucosa Intestinal/microbiologia
Londres
Masculino
Metformina/efeitos adversos
Metformina/uso terapêutico
Meia-Idade
Veillonellaceae/efeitos dos fármacos
Veillonellaceae/crescimento & desenvolvimento
Veillonellaceae/imunologia
Veillonellaceae/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Biomarkers); 0 (Hypoglycemic Agents); 0 (Inflammation Mediators); 0 (Prebiotics); 0 (Trisaccharides); 6587-31-1 (4'-galactooligosaccharide); 9100L32L2N (Metformin)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170515
[Lr] Data última revisão:
170515
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161216
[St] Status:MEDLINE
[do] DOI:10.1017/S0007114516004086


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[PMID]:27119767
[Au] Autor:Gonçalves C; Soares GM; Faveri M; Pérez-Chaparro PJ; Lobão E; Figueiredo LC; Baccelli GT; Feres M
[Ad] Endereço:Departamento de Periodontia, Universidade de Guarulhos, Guarulhos, SP, Brasil.
[Ti] Título:Association of three putative periodontal pathogens with chronic periodontitis in Brazilian subjects.
[So] Source:J Appl Oral Sci;24(2):181-5, 2016 Apr.
[Is] ISSN:1678-7765
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Objective The aim of this study was to evaluate the association of Porphyromonas endodontalis, Filifactor alocis and Dialister pneumosintes with the occurrence of periodontitis. Material and Methods Thirty subjects with chronic periodontitis (ChP) and 10 with periodontal health (PH) were included in the study. Nine subgingival biofilm samples were collected as follows: i) PH group - from the mesial/buccal aspect of each tooth in two randomly chosen contralateral quadrants; ii) ChP group - from three sites in each of the following probing depth (PD) categories: shallow (≤3 mm), moderate (4-6 mm) and deep (≥7 mm). Checkerboard DNA-DNA hybridization was used to analyze the samples. Results We found the three species evaluated in a higher percentage of sites and at higher levels in the group with ChP than in the PH group (p<0.05, Mann-Whitney test). We also observed these differences when the samples from sites with PD≤4 mm or ≥5 mm of subjects with ChP were compared with those from subjects with PH (p<0.05, Mann-Whitney test). In addition, the prevalence and levels of D. pneumosintes, and especially of F. alocis were very low in healthy subjects (0.12x105 and 0.01x105, respectively). Conclusion F. alocis and D. pneumosintes might be associated with the etiology of ChP, and their role in the onset and progression of this infection should be further investigated. The role of P. endodontalis was less evident, since this species was found in relatively high levels and prevalence in the PH group.
[Mh] Termos MeSH primário: Periodontite Crônica/microbiologia
Peptostreptococcus/patogenicidade
Porphyromonas endodontalis/patogenicidade
Veillonellaceae/patogenicidade
[Mh] Termos MeSH secundário: Adulto
Biofilmes
Brasil
Estudos de Casos e Controles
Contagem de Colônia Microbiana
Sondas de DNA
DNA Bacteriano
Placa Dentária/microbiologia
Feminino
Gengiva/microbiologia
Seres Humanos
Masculino
Meia-Idade
Peptostreptococcus/isolamento & purificação
Porphyromonas endodontalis/isolamento & purificação
Estatísticas não Paramétricas
Veillonellaceae/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA Probes); 0 (DNA, Bacterial)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:160428
[St] Status:MEDLINE


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[PMID]:26975755
[Au] Autor:Xiao Z; Awata T; Zhang D; Katayama A
[Ad] Endereço:Department of Civil Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan.
[Ti] Título:Denitrification by Pseudomonas stutzeri coupled with CO2 reduction by Sporomusa ovata with hydrogen as an electron donor assisted by solid-phase humin.
[So] Source:J Biosci Bioeng;122(3):307-13, 2016 Sep.
[Is] ISSN:1347-4421
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:A co-culture system comprising an acetogenic bacterium, Sporomusa ovata DSMZ2662, and a denitrifying bacterium, Pseudomonas stutzeri JCM20778, enabled denitrification using H2 as the sole external electron donor and CO2 as the sole external carbon source. Acetate produced by S. ovata supported the heterotrophic denitrification of P. stutzeri. A nitrogen balance study showed the reduction of nitrate to nitrogen gas without the accumulation of nitrite and nitrous oxide in the co-culture system. S. ovata did not show nitrate reduction to ammonium in the co-culture system. Significant proportions of the consumed H2 were utilized for denitrification: 79.9 ± 4.6% in the co-culture system containing solid-phase humin and 62.9±11.1% in the humin-free co-culture system. The higher utilization efficiency of hydrogen in the humin-containing system was attributed to the higher denitrification activity of P. stutzeri under the acetate deficient conditions. The nitrogen removal rate of the humin-containing co-culture system reached 0.19 kg NO3(-)-N·m(-3)·d(-1). Stable denitrification activity for 61 days of successive sub-culturing suggested the robustness of this co-culture system. This study provides a novel strategy for the in situ enhancement of microbial denitrification.
[Mh] Termos MeSH primário: Dióxido de Carbono/metabolismo
Desnitrificação
Elétrons
Substâncias Húmicas
Hidrogênio/metabolismo
Pseudomonas stutzeri/metabolismo
Veillonellaceae/metabolismo
[Mh] Termos MeSH secundário: Ácido Acético/metabolismo
Compostos de Amônio/metabolismo
Técnicas de Cocultura
Transporte de Elétrons
Processos Heterotróficos
Nitratos/metabolismo
Nitritos/metabolismo
Nitrogênio/metabolismo
Óxido Nitroso/metabolismo
Pseudomonas stutzeri/citologia
Veillonellaceae/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ammonium Compounds); 0 (Humic Substances); 0 (Nitrates); 0 (Nitrites); 0 (humin); 142M471B3J (Carbon Dioxide); 7YNJ3PO35Z (Hydrogen); K50XQU1029 (Nitrous Oxide); N762921K75 (Nitrogen); Q40Q9N063P (Acetic Acid)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160316
[St] Status:MEDLINE


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[PMID]:26825820
[Au] Autor:Etchebehere C; Castelló E; Wenzel J; del Pilar Anzola-Rojas M; Borzacconi L; Buitrón G; Cabrol L; Carminato VM; Carrillo-Reyes J; Cisneros-Pérez C; Fuentes L; Moreno-Andrade I; Razo-Flores E; Filippi GR; Tapia-Venegas E; Toledo-Alarcón J; Zaiat M
[Ad] Endereço:Microbial Ecology Laboratory, BioGem Department, Biological Research Institute Clemente Estable, Ministery of Education, Av. Italia, 3318, Montevideo, Uruguay. cetchebehere@iibce.edu.uy.
[Ti] Título:Microbial communities from 20 different hydrogen-producing reactors studied by 454 pyrosequencing.
[So] Source:Appl Microbiol Biotechnol;100(7):3371-84, 2016 Apr.
[Is] ISSN:1432-0614
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:To provide new insight into the dark fermentation process, a multi-lateral study was performed to study the microbiology of 20 different lab-scale bioreactors operated in four different countries (Brazil, Chile, Mexico, and Uruguay). Samples (29) were collected from bioreactors with different configurations, operation conditions, and performances. The microbial communities were analyzed using 16S rRNA genes 454 pyrosequencing. The results showed notably uneven communities with a high predominance of a particular genus. The phylum Firmicutes predominated in most of the samples, but the phyla Thermotogae or Proteobacteria dominated in a few samples. Genera from three physiological groups were detected: high-yield hydrogen producers (Clostridium, Kosmotoga, Enterobacter), fermenters with low-hydrogen yield (mostly from Veillonelaceae), and competitors (Lactobacillus). Inocula, reactor configurations, and substrates influence the microbial communities. This is the first joint effort that evaluates hydrogen-producing reactors and operational conditions from different countries and contributes to understand the dark fermentation process.
[Mh] Termos MeSH primário: Reatores Biológicos/normas
Fermentação
Hidrogênio/metabolismo
Consórcios Microbianos/genética
RNA Ribossômico 16S/genética
[Mh] Termos MeSH secundário: Anaerobiose
Clostridium/classificação
Clostridium/genética
Clostridium/metabolismo
Enterobacter/classificação
Enterobacter/genética
Enterobacter/metabolismo
Firmicutes/classificação
Firmicutes/genética
Firmicutes/metabolismo
Sequenciamento de Nucleotídeos em Larga Escala
Lactobacillus/classificação
Lactobacillus/genética
Lactobacillus/metabolismo
América Latina
Proteobactérias/classificação
Proteobactérias/genética
Proteobactérias/metabolismo
Thermotoga maritima/classificação
Thermotoga maritima/genética
Thermotoga maritima/metabolismo
Veillonellaceae/classificação
Veillonellaceae/genética
Veillonellaceae/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S); 7YNJ3PO35Z (Hydrogen)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160131
[St] Status:MEDLINE
[do] DOI:10.1007/s00253-016-7325-y


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[PMID]:26612007
[Au] Autor:Lee MY; Kim YJ; Gu HJ; Lee HJ
[Ad] Endereço:Department of Laboratory Medicine, Graduate School, Kyung Hee University, Seoul, South Korea.
[Ti] Título:A case of bacteremia caused by Dialister pneumosintes and Slackia exigua in a patient with periapical abscess.
[So] Source:Anaerobe;38:36-38, 2016 Apr.
[Is] ISSN:1095-8274
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Dialister pneumosintes and Slackia exigua are both obligatory anaerobe and known to be associated with periodontal diseases and other oral infection. We report a case of blood stream infection caused by D. pneumosintes and S. exigua. This occurred in a 78-year-old female patient that presented with general weakness and fever. We revealed that she had a periapical abscess. The blood culture was positive for D. pneumosintes and S. exigua; however, identifying them was challenging. Ultimately, 16S rRNA sequencing was used to identify the organisms. The patient recovered after being treated with ceftriaxone and clindamycin. To the best of our knowledge, this is the first report of bacteremia caused by mixed infection of D. pneumosintes and S. exigua.
[Mh] Termos MeSH primário: Actinobacteria/genética
Bacteriemia/microbiologia
Infecções por Bactérias Gram-Negativas/microbiologia
Abscesso Periapical/microbiologia
Veillonellaceae/genética
[Mh] Termos MeSH secundário: Actinobacteria/efeitos dos fármacos
Actinobacteria/isolamento & purificação
Idoso
Antibacterianos/farmacologia
Antibacterianos/uso terapêutico
Bacteriemia/diagnóstico
Bacteriemia/terapia
Coinfecção
Feminino
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Infecções por Bactérias Gram-Negativas/terapia
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Veillonellaceae/efeitos dos fármacos
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[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (RNA, Ribosomal, 16S)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:170729
[Lr] Data última revisão:
170729
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151128
[St] Status:MEDLINE


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[PMID]:26147498
[Au] Autor:Visser M; Pieterse MM; Pinkse MW; Nijsse B; Verhaert PD; de Vos WM; Schaap PJ; Stams AJ
[Ad] Endereço:Laboratory of Microbiology, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands. michael.visser@wur.nl.
[Ti] Título:Unravelling the one-carbon metabolism of the acetogen Sporomusa strain An4 by genome and proteome analysis.
[So] Source:Environ Microbiol;18(9):2843-55, 2016 Sep.
[Is] ISSN:1462-2920
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The Sporomusa genus comprises anaerobic spore-forming acetogenic bacteria that stain Gram-negative. Sporomusa species typically grow with one-carbon substrates and N-methylated compounds. In the degradation of these compounds methyltransferases are involved. In addition, Sporomusa species can grow autotrophically with H2 and CO2 , and use a variety of sugars for acetogenic growth. Here we describe a genome analysis of Sporomusa strain An4 and a proteome analysis of cells grown under five different conditions. Comparison of the genomes of Sporomusa strain An4 and Sporomusa ovata strain H1 indicated that An4 is a S. ovata strain. Proteome analysis showed a high abundance of several methyltransferases, predominantly trimethylamine methyltransferases, during growth with betaine, whereas trimethylamine is one of the main end-products of betaine degradation. In methanol degradation methyltransferases are also involved. In methanol-utilizing methanogens, two methyltransferases catalyse methanol conversion, methyltransferase 1 composed of subunits MtaB and MtaC and methyltransferase 2, also called MtaA. The two methyltransferase 1 subunits MtaB and MtaC were highly abundant when strain An4 was grown with methanol. However, instead of MtaA a methyltetrahydrofolate methyltransferase was synthesized. We propose a novel methanol degradation pathway in Sporomusa strain An4 that uses a methyltetrahydrofolate methyltransferase instead of MtaA.
[Mh] Termos MeSH primário: Proteoma
Veillonellaceae/metabolismo
[Mh] Termos MeSH secundário: Betaína/metabolismo
Carbono/metabolismo
Genoma Bacteriano
Metanol/metabolismo
Metilaminas/metabolismo
Metiltransferases/metabolismo
Veillonellaceae/enzimologia
Veillonellaceae/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Methylamines); 0 (Proteome); 3SCV180C9W (Betaine); 7440-44-0 (Carbon); EC 2.1.1.- (Methyltransferases); LHH7G8O305 (trimethylamine); Y4S76JWI15 (Methanol)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150707
[St] Status:MEDLINE
[do] DOI:10.1111/1462-2920.12973



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