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Pseudomonas aeruginosa
Published in Dongyou Liu, Laboratory Models for Foodborne Infections, 2017
Stavria Panayidou, Yiorgos Apidianakis
Classified in the family Pseudomonadaceae, order Pseudomonadales, class Gammaproteobacteria, the genus Pseudomonas comprises some of the most ubiquitous and diverse Gram-negative bacterial species in nature that are capable of utilizing a wide range of organic compounds and colonizing a variety of ecological niches. Among the members of this genus, Pseudomonas aeruginosa is remarkable for its capacity to inhabit diverse environments, including soil and water, and infect multiple organisms, such as insects, plants, and animals.1–6P. aeruginosa is an important opportunistic human pathogen inflicting predominantly burn, cystic fibrosis (CF), and otherwise immunocompromised patients. It is a frequent cause of nosocomial infections, being the most common pathogen isolated from patients hospitalized for longer than 1 week. One reason for its high prevalence is that it is foodborne—found, for example, in hospital water, food, and feeding tubes—and an efficient intestinal colonizer, especially upon antibiotic treatment and surgical stress.7 Another reason is its high virulence repertoire, which includes biofilm formation and quorum-sensing controlled factors.8,9 A third reason is its resistance to antibiotics.
Saliva microbiome alterations in dental fluorosis population
Published in Journal of Oral Microbiology, 2023
Shanshan Liu, Qiangsheng Song, Chenchen Zhang, Mengwan Li, Zhenzhen Li, Yudong Liu, Li Xu, Xiaofei Xie, Lili Zhao, Rongxiu Zhang, Qinglong Wang, Guojin Zeng, Yifan Zhang, Kai Zhang
To gain further insight into the differential abundance of bacterial taxa between the two groups, the relative bacterial community abundance at each taxonomic level was next assessed, revealing marked differences between the DF and HC groups. When assessing the 10 most dominant species, genera, families, and orders, the DF group exhibited significant increases in Pseudomonas, Pseudomonadaceae, and Pseudomonadales abundance together with reduced Streptococcus sanguinis, Rothia aeria, Fusobacterium periodonticum, Haemophilus, Gemella, Fusobacterium, Gemellaceae, Fusobacteriaceae, Pasteurellaceae, Lactobacillales, and Staphylococcales abundance relative to the HC group (Figure 3). At the species level, Streptococcus mutans, an important cariogenic bacterium, was present at significantly lower abundance in the DF group relative to the HC group (P= 0.004).
The effect of different carbon sources on biofouling in membrane fouling simulators: microbial community and implications
Published in Biofouling, 2022
Johny Cabrera, Hao-yu Guo, Jia-long Yao, Xiao-mao Wang
The linear discriminant analysis effect size was used to determine the biomarkers between groups using the method described elsewhere (Nicola Segata et al. 2011). For this four different groups were analyzed: Group A, including control (1), (2), (3); Group B, including glucose (1), (2), ‘A + G’ and ‘A + G + F’; Group C, including fructose (1), (2) and ‘A + G + F’; Group D, including acetate (1), (2), (3), ‘A + G’ and ‘A + G + F’. This information can be found in supplemental information Figure S5. The groups were compared against a group that had all the other samples that were not in the group. At the phylum level, there were no similar microorganisms between the different groups analyzed. In Group A, alphaproteobacteria was found to have the largest LDA score, followed by Methylophilaceace. In Group B, Rhodobacterales had the largest LDA score, in Group C, the phylum identified was an AB1, while for Group C, Pseudomondales were identified to have the largest score. Pseudomonadales belong to the class of gammaproteobacteria. Studies have found Pseudomonadales to be prevalent across fouled membranes and appear to be critical for ecological balance and biofilm maturation (Nagaraj, Skillman, Ho, Li and Gofton 2017). Pseudomonadales were found using LEfSe just in the group containing more than one carbon source which might indicate that the presence of more than one carbon source can increase the likelihood that Pseudomonadales will be present.
Prenatal androgen exposure causes hypertension and gut microbiota dysbiosis
Published in Gut Microbes, 2018
Shermel B. Sherman, Nadeen Sarsour, Marziyeh Salehi, Allen Schroering, Blair Mell, Bina Joe, Jennifer W. Hill
At the order level, bacteria from Chromatiales, Rhodospirillales, Sphingomonadales, Rhodobacterales, Caulobacterales, BD7-3, Rickettsiales, MIZ46, Legionellales, Alteromonadales, and an unknown order within the phylum Proteobacteria were significantly enriched within the PNA animal fecal microbiota (Fig. 8d, Supplementary Table 5). Bacteria from Burkholderiales, Pseudomonadales, Enterobacteriales, and Neisseriales were significantly decreased within the PNA fecal microbiota. At the family level, bacteria from Moraxellaceae, Rhodobacteraceae, Sphingomonadaceae, Caulobacteraceae, Comamonadaceae, Sinobacteraceae, Rhodospirillaceae, Piscirickettsiaceae, Hyphomicrobiaceae, and Coxiellaceae were significantly enriched within the PNA animal fecal microbiota. Bacteria from Enterobacteriaceae and Neisseriaceae were significantly decreased within the PNA fecal microbiota. At the genus level, bacteria from Sphingobium, Kingella, Mycoplana, Aggregatibacter, Steroidobacter, Methylibium, Buchnera, Bilophila, and Arcobacter were significantly enriched within the PNA animal fecal microbiota. Bacteria from Sutterella, Neisseria, and Pseudomonas were significantly decreased within the PNA fecal microbiota.