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Nature Microbiology Oct 2022Colonization of the intestine by oral microbes has been linked to multiple diseases such as inflammatory bowel disease and colon cancer, yet mechanisms allowing...
Colonization of the intestine by oral microbes has been linked to multiple diseases such as inflammatory bowel disease and colon cancer, yet mechanisms allowing expansion in this niche remain largely unknown. Veillonella parvula, an asaccharolytic, anaerobic, oral microbe that derives energy from organic acids, increases in abundance in the intestine of patients with inflammatory bowel disease. Here we show that nitrate, a signature metabolite of inflammation, allows V. parvula to transition from fermentation to anaerobic respiration. Nitrate respiration, through the narGHJI operon, boosted Veillonella growth on organic acids and also modulated its metabolic repertoire, allowing it to use amino acids and peptides as carbon sources. This metabolic shift was accompanied by changes in carbon metabolism and ATP production pathways. Nitrate respiration was fundamental for ectopic colonization in a mouse model of colitis, because a V. parvula narG deletion mutant colonized significantly less than a wild-type strain during inflammation. These results suggest that V. parvula harness conditions present during inflammation to colonize in the intestine.
Topics: Adenosine Triphosphate; Amino Acids; Animals; Carbon; Inflammation; Inflammatory Bowel Diseases; Intestines; Mice; Nitrates; Veillonella
PubMed: 36138166
DOI: 10.1038/s41564-022-01224-7 -
Emerging Infectious Diseases Jul 2005Veillonella spp. rarely cause infections in humans. We report a case of Veillonella endocarditis documented by isolating a slow-growing, gram-negative microbe in blood... (Review)
Review
Veillonella spp. rarely cause infections in humans. We report a case of Veillonella endocarditis documented by isolating a slow-growing, gram-negative microbe in blood cultures. This microbe was identified as the newly recognized species Veillonella montpellierensis (100% homology) by 16S RNA gene sequence analysis.
Topics: Aged; Anti-Bacterial Agents; Endocarditis, Bacterial; Female; Gram-Negative Bacterial Infections; Humans; Veillonella
PubMed: 16022792
DOI: 10.3201/eid1107.041361 -
Medecine Et Maladies Infectieuses Feb 2019Veillonella parvula is an anaerobic Gram-negative coccus rarely involved in bone and joint infections.
OBJECTIVES
Veillonella parvula is an anaerobic Gram-negative coccus rarely involved in bone and joint infections.
PATIENTS AND METHOD
We report the case of a Veillonella parvula vertebral osteomyelitis (VO) in a female patient without any risk factor.
RESULTS
The 35-year-old patient was immunocompetent and presented with Veillonella parvula VO. She was admitted to hospital for inflammatory lower back pain. The discovertebral sample was positive for Veillonella parvula. Literature data on Veillonella VO is scarce. Reported cases usually occurred in immunocompromised patients. Diagnosis delay can be up to four months. Patients are usually afebrile. Outcome with antimicrobial treatment alone is favorable in half of cases. Other patients must undergo surgery.
CONCLUSIONS
Veillonella VO may occur in immunocompetent patients and have a clinical spectrum of mechanical lower back pain.
Topics: Adult; Discitis; Female; Gram-Negative Bacterial Infections; Humans; Immunocompetence; Lumbar Vertebrae; Osteomyelitis; Veillonella
PubMed: 30385069
DOI: 10.1016/j.medmal.2018.10.001 -
Journal of Clinical Microbiology May 1996From 1974 to 1994, 2,033 specimens from children were submitted for cultures for anaerobic bacteria. Eighty-three Veillonella spp. were recovered from 83 children (4%).... (Review)
Review
From 1974 to 1994, 2,033 specimens from children were submitted for cultures for anaerobic bacteria. Eighty-three Veillonella spp. were recovered from 83 children (4%). Most Veillonella species were recovered from abscesses, aspiration pneumonias, burns, bites, and sinuses. The infections were polymicrobial in 79 (95%) patients, but in 4 (5%) patients, Veillonella species were recovered in pure culture. The predisposing conditions associated with the recovery of these organisms were previous surgery, malignancy, steroid therapy, foreign body, and immunodeficiency. These data illustrate that Veillonella spp. are found infrequently in children, mostly in association with mixed infections, and are recovered mixed with mouth and bowel flora.
Topics: Abscess; Adolescent; Burns; Child; Child, Preschool; Female; Gram-Negative Bacterial Infections; Humans; Infant; Male; Pneumonia, Aspiration; Pneumonia, Bacterial; Retrospective Studies; Veillonella
PubMed: 8727920
DOI: 10.1128/jcm.34.5.1283-1285.1996 -
Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi... Oct 2020Veillonella species, known as the early colonizer of oral biofilm, are prevalent in oral microbiota. Seven Veillonella species have been isolated from oral cavity. Their... (Review)
Review
Veillonella species, known as the early colonizer of oral biofilm, are prevalent in oral microbiota. Seven Veillonella species have been isolated from oral cavity. Their distribution varies not only with different people but also with different sites in the oral cavity. Oral Veillonella are associated with oral diseases. They contribute to the adhesion of Streptococcus mutans and consume the lactate generated by streptococci. Veillonella species play an important role in the occurrence and development of periodontal diseases by providing adhesion sites for Porphyromonas gingivalis and boosting immune responses. The production of lipopolysaccharide and H2S is related to other oral diseases, such as pulpitis, periapical periodontitis, and halitosis. Several studies have been conducted on the relationship between Veillonella and oral diseases and the interaction between Veillonella and other pathological microorganisms, but limited knowledge is available at the molecular level. This article reviews the research progress in the relationship between Veillonella and oral infectious diseases, such as dental caries and periodontal diseases.
Topics: Dental Caries; Humans; Streptococcus; Streptococcus mutans; Veillonella
PubMed: 33085245
DOI: 10.7518/hxkq.2020.05.018 -
Archives of Oral Biology Sep 2021This study aimed to investigate that these bacteria counts in the oral cavity were modulated by the recurrent aphthous stomatitis (RAS) status according to age and... (Meta-Analysis)
Meta-Analysis Review
Quantitative changes of Veillonella, Streptococcus, and Neisseria in the oral cavity of patients with recurrent aphthous stomatitis: A systematic review and meta-analysis.
OBJECTIVE
This study aimed to investigate that these bacteria counts in the oral cavity were modulated by the recurrent aphthous stomatitis (RAS) status according to age and ethnicity with a systematic review and meta-analysis.
DESIGN
The relevant case-control studies were searched in the literature database in English, Korean, and Chinese until June 2020 using keywords, and the literature was screened and collated for Review Manager analysis. Sensitivity analysis and quality check of the included literature were conducted.
RESULTS
From the selection process, oral bacteria counts were measured by polymerase chain reaction (PCR) in 8 studies and next-generation sequencing in 4 studies. Healthy control, ulcerative phases of RAS (UC-RAS), non-ulcerative phases of RAS (Non-UC-RAS) groups included 442, 473, and 386 participants in a total of 12 studies. For PCR detection, mean differences (95 % confidence intervals) of Veillonella and Streptococcus counts between the healthy-control and RAS groups were -1.91 (-2.41 ∼ -1.41) and -1.34 (-1.85 ∼ -0.83)(P < 0.0001). The bacteria count results by "Next-generation" sequencing (NGS) and PCR methods were similar. Significantly lower Veillonella and Streptococcus counts were observed in the UC-RAS group than in the non-UC-RAS group (P < 0.0001). Veillonella and Streptococcus count differences between RAS and controls aged ≥30 years were greater than those aged <30 years. At the species level, the prevalence of RAS had a negative relation with Veillonella dispar count.
CONCLUSIONS
Counts of Veillonella and Streptococcus are strongly correlated with the recovery and progression of RAS, especially in middle-aged patients. Adjustment of oral microbiota should be considered in the treatment of RAS.
Topics: Humans; Middle Aged; Neisseria; Stomatitis, Aphthous; Streptococcus; Veillonella
PubMed: 34167010
DOI: 10.1016/j.archoralbio.2021.105198 -
Microbiology Spectrum Feb 2023species are abundant members of the human oral microbiome with multiple interspecies commensal relationships. Examining the distribution patterns of species across the...
species are abundant members of the human oral microbiome with multiple interspecies commensal relationships. Examining the distribution patterns of species across the oral cavity is fundamental to understanding their oral ecology. In this study, we used a combination of pangenomic analysis and oral metagenomic information to clarify taxonomy and to test the site specialist hypothesis for the genus, which contends that most oral bacterial species are adapted to live at specific oral sites. Using isolate genome sequences combined with shotgun metagenomic sequence data, we showed that species have clear, differential site specificity: Veillonella parvula showed strong preference for supra- and subgingival plaque, while closely related V. dispar, as well as more distantly related V. atypica, preferred the tongue dorsum, tonsils, throat, and hard palate. In addition, the provisionally named sp. Human Microbial Taxon 780 showed strong site specificity for keratinized gingiva. Using comparative genomic analysis, we identified genes associated with thiamine biosynthesis and the reductive pentose phosphate cycle that may enable species to occupy their respective habitats. Understanding the microbial ecology of the mouth is fundamental for understanding human physiology. In this study, metapangenomics demonstrated that different species have clear ecological preferences in the oral cavity of healthy humans, validating the site specialist hypothesis. Furthermore, the gene pool of different species was found to be reflective of their ecology, illuminating the potential role of vitamins and carbohydrates in determining distribution patterns and interspecies interactions.
Topics: Humans; Veillonella; Mouth; Tongue; Palatine Tonsil; Microbiota
PubMed: 36695592
DOI: 10.1128/spectrum.04042-22 -
Nature Medicine Jul 2019The human gut microbiome is linked to many states of human health and disease. The metabolic repertoire of the gut microbiome is vast, but the health implications of...
The human gut microbiome is linked to many states of human health and disease. The metabolic repertoire of the gut microbiome is vast, but the health implications of these bacterial pathways are poorly understood. In this study, we identify a link between members of the genus Veillonella and exercise performance. We observed an increase in Veillonella relative abundance in marathon runners postmarathon and isolated a strain of Veillonella atypica from stool samples. Inoculation of this strain into mice significantly increased exhaustive treadmill run time. Veillonella utilize lactate as their sole carbon source, which prompted us to perform a shotgun metagenomic analysis in a cohort of elite athletes, finding that every gene in a major pathway metabolizing lactate to propionate is at higher relative abundance postexercise. Using C-labeled lactate in mice, we demonstrate that serum lactate crosses the epithelial barrier into the lumen of the gut. We also show that intrarectal instillation of propionate is sufficient to reproduce the increased treadmill run time performance observed with V. atypica gavage. Taken together, these studies reveal that V. atypica improves run time via its metabolic conversion of exercise-induced lactate into propionate, thereby identifying a natural, microbiome-encoded enzymatic process that enhances athletic performance.
Topics: Animals; Athletes; Exercise; Gastrointestinal Microbiome; Humans; Lactic Acid; Metagenomics; Mice; Mice, Inbred C57BL; Propionates; Running; Veillonella
PubMed: 31235964
DOI: 10.1038/s41591-019-0485-4 -
Anaerobe Jun 2023Veillonella species are obligate anaerobes which are part of the human oral, gut and vaginal microbiota. The genus Veillonella consists of 16 characterized species. Very...
Veillonella species are obligate anaerobes which are part of the human oral, gut and vaginal microbiota. The genus Veillonella consists of 16 characterized species. Very few infections due to Veillonella atypica have been reported till date. Here we present a case of retropharyngeal abscess due to this organism in a 55-year-old lady.
Topics: Female; Humans; Middle Aged; Veillonella; Retropharyngeal Abscess
PubMed: 36746223
DOI: 10.1016/j.anaerobe.2023.102712 -
International Journal of Systematic and... Jan 2021Two strains of previously unknown Gram-negative cocci, T1-7 and S6-16, were isolated from the oral cavity of healthy Japanese children. The two strains showed atypical...
Two strains of previously unknown Gram-negative cocci, T1-7 and S6-16, were isolated from the oral cavity of healthy Japanese children. The two strains showed atypical phenotypic characteristics of members of the genus , including catalase production. Sequencing of their 16S rRNA genes confirmed that they belong to genus . Under anaerobic conditions, the two strains produced acetic acid and propionic acid as metabolic end-products in a trypticase-yeast extract-haemin medium containing 1 % (w/v) glucose, 1 % (w/v) fructose and 1 % (v/v) sodium lactate. Comparative analysis of the 16S rRNA, , and gene sequences revealed that the two strains are phylogenetically homogeneous and comprise a distinct, novel lineage within the genus . The sequences from the two strains shared the highest similarity, at 99.9, 95.8, 96.9 and 96.7 %, using the partial 16S rRNA, , and gene sequences, respectively, with the type strains of the two most closely related species, ATCC 17748 and JCM 31738. Furthermore, strain T1-7 shared the highest average nucleotide identity (ANI) value (94.06 %) with type strain of the most closely related species, . At the same time, strain T1-7 showed the highest digital DNA-DNA hybridization (dDDH) value (55.5 %) with the type strain of . The two strains reported in this study were distinguished from the previously reported species from the genus based on catalase production, partial , and sequences, average ANI and dDDH values. Based on these observations, the two strains represent a novel species, for which the name sp. nov. is proposed. The type strain is T1-7 (JCM 33966=CCUG 74597).
Topics: Bacterial Typing Techniques; Base Composition; Child; DNA, Bacterial; Fatty Acids; Genes, Bacterial; Humans; Japan; Mouth; Nucleic Acid Hybridization; Phylogeny; RNA, Ribosomal, 16S; Sequence Analysis, DNA; Veillonella
PubMed: 33263509
DOI: 10.1099/ijsem.0.004583