VERMIJDBARE “FEBRIS E CAUSA IGNOTA” DOOR RALSTONIA PICKETTII BACTERIEMIE

2001 ◽  
Vol 56 (1) ◽  
pp. 51-54 ◽  
Author(s):  
G. T’Sjoen ◽  
G. Verschraegen ◽  
S. Steyaert ◽  
D. Vogelaers
Keyword(s):  
Ralstonia Pickettii

Ralstonia pickettii: a persistent Gram-negative nosocomial infectious organism

2006 ◽  
Vol 62 (3) ◽  
pp. 278-284 ◽  
Author(s):  
M RYAN ◽  
J PEMBROKE ◽  
C ADLEY
Keyword(s):  
Gram Negative ◽  
Ralstonia Pickettii ◽  
Infectious Organism

scholarly journals Characterization of the Adaptive Response to Trichloroethylene-Mediated Stresses in Ralstonia pickettii PKO1

2002 ◽  
Vol 68 (11) ◽  
pp. 5231-5240 ◽  
Author(s):  
Joonhong Park ◽  
Jerome J. Kukor ◽  
Linda M. Abriola
Keyword(s):  
Adaptive Response ◽  
Combined Effects ◽  
Similar Extent ◽  
Protective Response ◽  
Ralstonia Pickettii ◽  
Pathway Expression ◽  
High Concentrations ◽  
Tce Degradation ◽  
Solvent Stress

ABSTRACT In Ralstonia pickettii PKO1, a denitrifying toluene oxidizer that carries a toluene-3-monooxygenase (T3MO) pathway, the biodegradation of toluene and trichloroethylene (TCE) by the organism is induced by TCE at high concentrations. In this study, the effect of TCE preexposure was studied in the context of bacterial protective response to TCE-mediated toxicity in this organism. The results of TCE degradation experiments showed that cells induced by TCE at 110 mg/liter were more tolerant to TCE-mediated stress than were those induced by TCE at lower concentrations, indicating an ability of PKO1 to adapt to TCE-mediated stress. To characterize the bacterial protective response to TCE-mediated stress, the effect of TCE itself (solvent stress) was isolated from TCE degradation-dependent stress (toxic intermediate stress) in the subsequent chlorinated ethylene toxicity assays with both nondegradable tetrachloroethylene and degradable TCE. The results of the toxicity assays showed that TCE preexposure led to an increase in tolerance to TCE degradation-dependent stress rather than to solvent stress. The possibility that such tolerance was selected by TCE degradation-dependent stress during TCE preexposure was ruled out because a similar extent of tolerance was observed in cells that were induced by toluene, whose metabolism does not produce any toxic products. These findings suggest that the adaptation of TCE-induced cells to TCE degradation-dependent stress was caused by the combined effects of solvent stress response and T3MO pathway expression.

scholarly journals Draft Genome Sequences of Two Ralstonia pickettii Strains with Different Aminoglycoside Resistance Phenotypes

2016 ◽  
Vol 4 (6) ◽  
Author(s):  
Ivone Vaz-Moreira ◽  
Javier Tamames ◽  
José Luis Martínez ◽  
Célia M. Manaia
Keyword(s):  
Draft Genome ◽  
Selective Medium ◽  
Genome Sequences ◽  
Aminoglycoside Resistance ◽  
Ralstonia Pickettii ◽  
Hospital Effluent

The genomes of two Ralstonia pickettii strains (H2Cu2 and H2Cu5), isolated from hospital effluent in a selective medium containing CuSO 4, were sequenced. They presented MICs of >256 and 6 µg/ml for the aminoglycoside gentamicin, respectively. The 5.2-Mb draft genomes have 40 contigs for strain H2Cu2 and 113 for H2Cu5.

scholarly journals Bakteri Agens Hayati Potensial terhadap Patogen Penting pada Padi

2020 ◽  
Vol 16 (1) ◽  
pp. 37-48
Author(s):  
Ratna Sari Dewi ◽  
Giyanto Giyanto ◽  
Meity Suradji Sinaga ◽  
Dadang Dadang ◽  
Bambang Nuryanto
Keyword(s):  
Bacillus Subtilis ◽  
Rhizoctonia Solani ◽  
Pseudomonas Fluorescens ◽  
Pyricularia Oryzae ◽  
Burkholderia Glumae ◽  
Streptomyces Sp ◽  
Ralstonia Pickettii

Saat ini teknologi pengendalian hayati penyakit utama padi terus berkembang. Dalam pengembangan teknologi pengendalian hayati, mekanisme penghambatan patogen dalam perkembangan penyakit pada suatu populasi tumbuhan dalam area tertentu menjadi hal yang penting. Penelitian bertujuan mendapatkan bakteri agens hayati potensial dalam pengendalian penyakit penting padi di antaranya yang disebabkan Pyricularia oryzae, Xanthomnas oryzae pv. oryzae, Rhizoctonia solani, Burkholderia glumae, dan Drechlera oryzae, berdasarkan mekanisme antagonisme, kemampuan menginduksi ketahanan dan mendukung kebugaran tanaman, serta kompatibilitas antaragens hayati. Ralstonia pickettii TT47, Pseudomonas fluorescens P12, Chromobacterium sp. T51118, Bacillus subtilis 451 dan 154, serta Streptomyces sp. T51105 dibuktikan memiliki mekanisme antibiosis dengan menghasilkan metabolit sekunder dan senyawa volatil. Berdasarkan uji produksi enzim kitinolitik Chromobacterium sp. dan Streptomyces sp. memiliki mekanisme lisis. Aktivitas antibiotik R. pickettii dan P. fluorescens tergolong kuat terhadap P. oryzae dengan penekanan secara berurutan sebesar 79.68% dan 77.59% pada uji biakan ganda. Penekanan pertumbuhan miselium P. oryzae dan R. solani pada uji volatil mencapai 100% oleh Chromobacterium sp. Semua agens hayati umumnya mampu menginduksi ketahanan dan mendukung kebugaran tanaman. Uji kompatibilitas menunjukan R. pickettii, P. fluorescens, dan Chromobacterium sp. bersifat kompatibel. Dari hasil penelitian diperoleh tiga bakteri agens hayati dengan kategori unggul, yaitu P. fluorescens P12, R. pickettii TT47, dan Chromobacterium sp. T51118. Ketiganya mampu menekan pertumbuhan patogen, menginduksi ketahanan dan mendukung kebugaran tanaman, memiliki patogen sasaran yang lebih beragam, serta bersifat kompatibel.

scholarly journals Alteration of salivary microbiome in periodontitis with or without type-2 diabetes mellitus and metformin treatment

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiaoyu Sun ◽  
Meihui Li ◽  
Li Xia ◽  
Zhaohui Fang ◽  
Shenjun Yu ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Rrna Gene ◽  
Ralstonia Pickettii ◽  
Health Group ◽  
Significant Difference ◽  
Rrna Gene Sequencing ◽  
Hypoglycemic Therapy

Abstract We aimed to explore the effects of type-2 diabetes mellitus (T2DM) and hypoglycemic therapy on the salivary microbiome in periodontitis patients and identify the potential salivary micro-biomarker for the early warning of T2DM. Saliva samples were collected from healthy individuals (Health), periodontitis patients (P), T2DM patients, periodontitis patients with T2DM (DAP), and DAP patients treated with Metformin (Met). Samples were determined by16S rRNA gene sequencing. 29 phyla, 322 genera, and 333 species of salivary microbiome were annotated. Compared to the Health group, the P and DAP group showed a significantly higher diversity of saliva microbiota, while the T2DM and Met group had no significant difference in microbial abundance but showed a trend of increasing diversity. Other than well-known periodontitis-inducing pathogens, the proportion of Prevotella copri, Alloprevotella rava, and Ralstonia pickettii, etc. were also significantly increased in periodontitis patients with or without T2DM. After effective glycemic control, the abundance of Prevotella copri, Alloprevotella rava, Ralstonia pickettii, etc. decreased in periodontitis patients with companion T2DM. The accuracies of the classification models in differentiating Health-vs.-P, DAP-vs.-P, and T2DM-vs.-P were 100%, 96.3%, and 98.1%, respectively. Hypoglycemic therapy could reconstruct the saliva microbiota and hence improve the localized conditions of diabetes patients with periodontitis.

Neonatal Sepsis Caused by Ralstonia pickettii

2008 ◽  
Vol 27 (3) ◽  
pp. 283 ◽  
Author(s):  
Salvino M. Vitaliti ◽  
M Cristina Maggio ◽  
Domenico Cipolla ◽  
Giovanni Corsello ◽  
Caterina Mammina
Keyword(s):  
Neonatal Sepsis ◽  
Ralstonia Pickettii

Ralstonia pickettii and Burkholderia cepacia complex bloodstream infections related to infusion of contaminated water for injection

2005 ◽  
Vol 60 (1) ◽  
pp. 51-55 ◽  
Author(s):  
B.M. Moreira ◽  
M.B.G.P. Leobons ◽  
F.L.P.C. Pellegrino ◽  
M. Santos ◽  
L.M. Teixeira ◽  
...  
Keyword(s):  
Burkholderia Cepacia ◽  
Bloodstream Infections ◽  
Burkholderia Cepacia Complex ◽  
Contaminated Water ◽  
Ralstonia Pickettii

scholarly journals Ralstonia pickettii Traced in Blood Culture Bottles

2002 ◽  
Vol 40 (7) ◽  
pp. 2666-2667 ◽  
Author(s):  
N. Boutros ◽  
N. Gonullu ◽  
A. Casetta ◽  
M. Guibert ◽  
D. Ingrand ◽  
...  
Keyword(s):  
Blood Culture ◽  
Ralstonia Pickettii
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