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Scientific Reports Jul 2020The vaginal microbiota of healthy women typically has low diversity, which increases after perturbations. Among these, lifestyle associated with certain sexual and...
The vaginal microbiota of healthy women typically has low diversity, which increases after perturbations. Among these, lifestyle associated with certain sexual and antimicrobial practices may be associated with higher diversity. To test this hypothesis, we characterized the vaginal microbiota in the cervicovaginal and introital sites in sexually active Amerindians (N = 82) spanning urbanization, and in urban mestizos (N = 29), in the Venezuelan Amazonas. HPV status was also considered. Sampling was performed in an urban gradient from remote villages to a town, and women were individually classified by the degree of urbanization (low, medium, and high). Amerindian cervicovaginal and introital microbiota diversity were not associated with major changes in urbanization or ethnicity. There was a non-significant trend of increased diversity with urbanization, with a few taxa found overrepresented in urban Amerindians (Brevibacterium linens and Peptoniphilus lacrimalis) or mestizos (Mobiluncus mulieris and Prevotella sp.). Among all women, cervicovaginal and introital samples clustered, respectively, in four and two community state types (CSTs), where most profiles were dominated by Lactobacillus iners, Gardnerella vaginalis or were highly diverse profiles. HPV status did not associate with microbial diversity. In conclusion, no association was found between urban level and the vaginal microbiome in Amerindian women, and little difference was found between ethnicities. L. iners and high diversity profiles, associated with vaginal health outcomes, prevail in these populations.
Topics: Biodiversity; Cervix Uteri; Cluster Analysis; Female; Geography; Humans; Microbiota; Papillomavirus Infections; Urbanization; Vagina; Venezuela; American Indian or Alaska Native
PubMed: 32719372
DOI: 10.1038/s41598-020-69111-x -
Acta Bio-medica : Atenei Parmensis Aug 2023Corynebacterium or diphtheroid's are gram-positive aerobic, pleomorphic skin and mucosal membrane components that are not pathogenic in nature. Peptostreptococcus...
Corynebacterium or diphtheroid's are gram-positive aerobic, pleomorphic skin and mucosal membrane components that are not pathogenic in nature. Peptostreptococcus indolicus belongs to the Peptostreptococcus genus and is a Gram-Positive Anaerobic Cocci (GPAC). Less than one percent of endocarditis is caused by gram-positive anaerobic bacteria. We report the first case of Peptoniphilus indolicus and Corynebacterium endocarditis in a patient with native valves and a pacemaker. In time, diagnosis of a Peptoniphilus indolicus infection can lead to early management of the infection and a decreased incidence of serious complications such as embolization or abscess formation. The combination of aggressive antibiotic administration and surgical intervention can significantly decrease morbidity and mortality. This case report will highlight the importance of Peptoniphilus infective endocarditis, ultimately leading to better diagnostic strategies and management.
Topics: Humans; Endocarditis; Endocarditis, Bacterial; Corynebacterium; Embolization, Therapeutic
PubMed: 37606054
DOI: 10.23750/abm.v94iS1.14614 -
Clinical Immunology (Orlando, Fla.) Aug 2023Almost 90% of Behçet's patients present with oral and/or genital ulcers which influence the disease outcome. We hypothesised that the dysregulation of the oral and...
UNLABELLED
Almost 90% of Behçet's patients present with oral and/or genital ulcers which influence the disease outcome. We hypothesised that the dysregulation of the oral and genital microbiome, coupled with dysregulation of the immune response, contributes to the aetiopathogenesis of Behçet's Disease (BD) and drives disease activation.
METHOD
152 BD patient samples; 70 matched oral and genital samples plus 12 unmatched samples (Female: Male, 58:12; mean age, 42 ± 13.9: 39.3 ± 10.3) to profile microbial community high-throughput sequencing of the microbiome using 16 s rRNA sequencing targeting the V1/V2 and V3/V4 hyper variable regions were used and results reviewed in relation to disease severity, Work and Social Adjustment Scale (WSAS) outcomes and medication.
RESULTS
Alpha and beta diversity were significantly decreased in genital compared to oral samples; p value<0.05. However, grouping the samples as to whether ulceration was present was not significant. Escherichia-Shigella was the only Amplicon Sequence Variants (ASVs) in the V1/V2 region that was shared between the oral mucosa with ulcer (O_U) and genital mucosa with ulcer (G_U) groups. This was in contrast to the V3/V4 region which indicated that Lachnospiraceae, Saccharimonadales, and Coriobacteriales were shared between the O_U and G_U groups. In addition, gender had no impact on the bacterial abundance in V1/V2 analysis of the oral and genital samples. V3/V4 analysis of genital samples demonstrated that Lactobacilli and Gardnerella were significantly increased in females (20 times) compared to the males in samples; p-adj <0.05. Interestingly in BD patients, Rothia which is commonly found in the mouth was present in both oral and genital samples. Streptococci were significantly increased while Veillonella significantly decreased in the presence of oral ulceration in the BD cohort. The clinical phenotype had no effect on V1/V2 and V3/V4 on the bacterial abundance of oral samples. However, medication e.g. colchicine had a significant effect on the oral microbial abundance (V1/V2; P = 0.020, V3/V4; P = 0.003). There was no relationship between colchicine and the presence/absence of genital ulcers. BD patients with active disease had higher WSAS scores, and their bacterial abundance differed significantly from the non-active BD patients (ADONIS, R2 = 0.05, p value =0.029).
CONCLUSION
The presence of the microbes Streptococcus, Veillonella, Gardnerella, Lactobacillus, Atopobium, Peptoniphilus, Corynebacterium and Staphylococcus may provide early evidence of BD patients are with active disease.
Topics: Male; Female; Humans; Behcet Syndrome; Ulcer; Microbiota; Genitalia; Bacteria; Mucous Membrane; Colchicine
PubMed: 37257548
DOI: 10.1016/j.clim.2023.109654 -
Acta Clinica Belgica Feb 2022Peptoniphilus species are Gram-positive anaerobic cocci that are commensals of the human vagina and gut. (Review)
Review
BACKGROUND
Peptoniphilus species are Gram-positive anaerobic cocci that are commensals of the human vagina and gut.
METHODS AND RESULTS
We describe a case of mixed Escherichia coli and Peptoniphilus spp. osteomyelitis identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry as Peptoniphilus harei and present a short literature review.
CONCLUSION
To our knowledge, only six cases of P. harei osteomyelitis have been reported to date.
Topics: Escherichia coli; Female; Humans; Osteomyelitis; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
PubMed: 32552621
DOI: 10.1080/17843286.2020.1783908 -
European Urology Oncology Aug 2022Bacteria play a suspected role in the development of several cancer types, and associations between the presence of particular bacteria and prostate cancer have been... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Bacteria play a suspected role in the development of several cancer types, and associations between the presence of particular bacteria and prostate cancer have been reported.
OBJECTIVE
To provide improved characterisation of the prostate and urine microbiome and to investigate the prognostic potential of the bacteria present.
DESIGN, SETTING, AND PARTICIPANTS
Microbiome profiles were interrogated in sample collections of patient urine (sediment microscopy: n = 318, 16S ribosomal amplicon sequencing: n = 46; and extracellular vesicle RNA-seq: n = 40) and cancer tissue (n = 204).
OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS
Microbiomes were assessed using anaerobic culture, population-level 16S analysis, RNA-seq, and whole genome DNA sequencing.
RESULTS AND LIMITATIONS
We demonstrate an association between the presence of bacteria in urine sediments and higher D'Amico risk prostate cancer (discovery, n = 215 patients, p < 0.001; validation, n = 103, p < 0.001, χ test for trend). Characterisation of the bacterial community led to the (1) identification of four novel bacteria (Porphyromonas sp. nov., Varibaculum sp. nov., Peptoniphilus sp. nov., and Fenollaria sp. nov.) that were frequently found in patient urine, and (2) definition of a patient subgroup associated with metastasis development (p = 0.015, log-rank test). The presence of five specific anaerobic genera, which includes three of the novel isolates, was associated with cancer risk group, in urine sediment (p = 0.045, log-rank test), urine extracellular vesicles (p = 0.039), and cancer tissue (p = 0.035), with a meta-analysis hazard ratio for disease progression of 2.60 (95% confidence interval: 1.39-4.85; p = 0.003; Cox regression). A limitation is that functional links to cancer development are not yet established.
CONCLUSIONS
This study characterises prostate and urine microbiomes, and indicates that specific anaerobic bacteria genera have prognostic potential.
PATIENT SUMMARY
In this study, we investigated the presence of bacteria in patient urine and the prostate. We identified four novel bacteria and suggest a potential prognostic utility for the microbiome in prostate cancer.
Topics: Bacteria; Humans; Male; Microbiota; Prostate; Prostatic Neoplasms; RNA, Ribosomal, 16S
PubMed: 35450835
DOI: 10.1016/j.euo.2022.03.006 -
Current Medical Research and Opinion Aug 2022belongs is a gram-positive anaerobic coccus (GPAC), which can cause bacterial vaginitis. However, only a few studies have reported severe infection of . This study...
BACKGROUND
belongs is a gram-positive anaerobic coccus (GPAC), which can cause bacterial vaginitis. However, only a few studies have reported severe infection of . This study presented the first case of severe infection of during pregnancy. It aimed to help to fill the gap in the literature, find out the factors that accelerate infection and discuss the significance of the GPAC test.
CASE PRESENTATION
A 35-year-old woman was admitted due to unbearable abdominal pain with dilation of the cervical opening at 22+ weeks of gestation. A blood test revealed electrolyte disturbance and hypoproteinemia. A day before admission, the patient developed pain in the lower abdomen accompanied by yellow-green vaginal discharge. Two hours after admission, the patient suddenly presented with hyperpyrexia and chills. Timely and adequate antibiotic and cooling treatments were administered. After 14 h, the patient again developed chills that lasted for approximately 20 min, accompanied by uterine contractions and membrane rupture. After 3 h, she had a miscarriage and rapidly developed septic shock. She was transferred to the intensive care unit for further infection control, shock correction, and circulatory stabilization. The cultures of blood, secretion specimen, and amniotic fluid indicated infection using a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, an advanced tool for bacterial species identification.
CONCLUSIONS
is an opportunistic pathogen in pregnant women. Poor physical conditions and pregnancy may accelerate disease progression and lead to severe inflammation.
Topics: Adult; Anti-Bacterial Agents; Chills; Female; Firmicutes; Gram-Positive Cocci; Humans; Pregnancy; Pregnant Women
PubMed: 35481409
DOI: 10.1080/03007995.2022.2072091 -
Frontiers in Immunology 2022Postmenopausal osteoporosis (PMO) is influenced by estrogen metabolism and immune response, which are modulated by several factors including the microbiome and...
BACKGROUND
Postmenopausal osteoporosis (PMO) is influenced by estrogen metabolism and immune response, which are modulated by several factors including the microbiome and inflammation. Therefore, there is increasing interest in understanding the role of microbiota in PMO.
OBJECTIVES
To investigate variations in gut microbiota (GM) and vaginal microbiota (VM) in postmenopausal women with osteoporosis.
METHODS
A total of 132 postmenopausal women were recruited for the study and divided into osteoporosis (n = 34), osteopenia (n = 47), and control (n = 51) groups based on their T score. The serum levels of interleukin (IL)-10, tumor necrosis factor (TNF)-α, and lipopolysaccharide-binding protein were determined enzyme-linked immunosorbent assay. Additionally, 16S rRNA gene V3-V4 region sequencing was performed to investigate the GM and VM of the participants.
RESULTS
Significant differences were observed in the microbial compositions of fecal and vaginal samples between groups ( < 0.05). It was noted that for GM, , and spp. were enriched in the control group, whereas the abundances of , , and spp. were higher in the osteoporosis group than in the other groups. Additionally, for VM, was enriched in the control group, whereas the abundances of , and spp. were higher in the osteoporosis group than in the other groups. The predicted functional capacities of GM and VM were different in the various groups. We also found that the serum level of IL-10 in the osteoporosis group was significantly lower than that in the control group and osteopenia group, while TNF-α was significantly higher in the osteoporosis group than that in the control group ( < 0.05).
CONCLUSION
The results show that changes in BMD in postmenopausal women are associated with the changes in GM and VM; however, changes in GM are more closely correlated with PMO than VM.
Topics: Bone Diseases, Metabolic; Female; Gastrointestinal Microbiome; Humans; Osteoporosis; Osteoporosis, Postmenopausal; RNA, Ribosomal, 16S; Tumor Necrosis Factor-alpha; Vagina
PubMed: 36032115
DOI: 10.3389/fimmu.2022.930244 -
Frontiers in Cellular and Infection... 2021The commensal microbiome influences skin immunity, but its function in toenail health remains unclear. Paronychia is one of the most common inflammatory toenail...
The commensal microbiome influences skin immunity, but its function in toenail health remains unclear. Paronychia is one of the most common inflammatory toenail diseases, but antibiotic treatment is seldom effective in clinical cases. In this study, we performed sequencing to investigate the characteristics of microbes associated with paronychia in order to identify the key microorganisms involved in inflammation. Seventy dermic samples were collected from patients with paronychia and the differences in dermic microbiota were analyzed in patients with different inflammation severities. Distinct clustering of dermal microbiota was observed in the dermis with different inflammation severities. A higher relative abundance of anaerobic microorganisms such as , , and was observed in severe paronychia, whereas disappeared with disease progression. Co-occurring network analysis suggested that the disturbance of the dermic microbiome and attenuation of antagonism by against anaerobic pathogens may aggravate inflammation in paronychia. Functional analysis showed that dermic microbiome disturbance may worsen microbial metabolism and tissue repair in the skin. In conclusion, we revealed that an increased abundance of anaerobic microorganisms and loss of in the dermis may promote paronychia progression and microbiological imbalance may aggravate inflammation in patients with paronychia.
Topics: Humans; Inflammation; Microbiota; Nails; Paronychia; RNA, Ribosomal, 16S
PubMed: 34926325
DOI: 10.3389/fcimb.2021.781927 -
Journal of Medical Microbiology Mar 2024There is growing evidence that altered microbiota abundance of a range of specific anaerobic bacteria are associated with cancer, including spp., spp., spp., spp.,... (Review)
Review
There is growing evidence that altered microbiota abundance of a range of specific anaerobic bacteria are associated with cancer, including spp., spp., spp., spp., spp., spp spp and spp. linked to multiple cancer types. In this review we explore these pathogenic associations. The mechanisms by which bacteria are known or predicted to interact with human cells are reviewed and we present an overview of the interlinked mechanisms and hypotheses of how multiple intracellular anaerobic bacterial pathogens may act together to cause host cell and tissue microenvironment changes associated with carcinogenesis and cancer cell invasion. These include combined effects on changes in cell signalling, DNA damage, cellular metabolism and immune evasion. Strategies for early detection and eradication of anaerobic cancer-associated bacterial pathogens that may prevent cancer progression are proposed.
Topics: Humans; Bacteria, Anaerobic; Carcinogenesis; Immune Evasion; Porphyromonas; Signal Transduction; Tumor Microenvironment
PubMed: 38535967
DOI: 10.1099/jmm.0.001817 -
Frontiers in Medicine 2021Several studies using bronchoalveolar lavage fluid (BALF) reported that lung microbial communities were associated with the development and clinical outcome of...
Several studies using bronchoalveolar lavage fluid (BALF) reported that lung microbial communities were associated with the development and clinical outcome of idiopathic pulmonary fibrosis (IPF). However, the microbial communities in IPF lung tissues are not well known. This study is aimed to investigate bacterial microbial communities in lung tissues and determine their impact on the clinical outcomes of patients with IPF. Genomic DNA extracted from lung tissues of patients with IPF ( = 20; 10 non-survivors) and age- and sex-matched controls ( = 20) was amplified using fusion primers targeting the V3 and V4 regions of the 16S RNA genes with indexing barcodes. Mean age of IPF subjects was 63.3 yr, and 65% were male. Alpha diversity indices did not significantly differ between IPF patients and controls, or between IPF non-survivors and survivors. The relative abundance of , and was increased, whereas that of , and decreased in patients with IPF compared with that in the controls. A decreased relative abundance of (odds ratio [OR], 0.352, = 0.027) and (OR, 0.013, = 0.046) was associated with a diagnosis of IPF in the multivariable logistic analysis adjusted by age and gender. Multivariable Cox analysis adjusted for age and forced vital capacity (FVC) revealed that higher relative abundance of (hazard ratio [HR], 1.993, = 0.044), (HR, 57.590, = 0.024), and (HR, 37.189, = 0.038) was independently associated with IPF mortality. The relative abundance of ( = 0.590) and ( = 0.373) was correlated positively, whereas that of ( = -0.509) and ( = -0.593) was correlated inversely with FVC. In addition, the relative abundance of the ( = 0.616) and ( = 0.606) genera was positively correlated, whereas that of the ( = -0.464) and ( = -0.495) genera was inversely correlated with distance during the 6-min walking test. The composition of the microbiome in lung tissues differed between patients with IPF and controls and was associated with the diagnosis, mortality, and disease severity of IPF.
PubMed: 34733866
DOI: 10.3389/fmed.2021.744523