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Urinary microbiome

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https://www.readbyqxmd.com/read/28333758/cutaneous-burn-injury-modulates-urinary-antimicrobial-peptide-responses-and-the-urinary-microbiome
#1
Jennifer K Plichta, Casey J Holmes, Vanessa Nienhouse, Michelle Puszynski, Xiang Gao, Qunfeng Dong, Huaiying Lin, James Sinacore, Michael Zilliox, Evelyn Toh, David E Nelson, Richard L Gamelli, Katherine A Radek
OBJECTIVES: Characterization of urinary bacterial microbiome and antimicrobial peptides after burn injury to identify potential mechanisms leading to urinary tract infections and associated morbidities in burn patients. DESIGN: Retrospective cohort study using human urine from control and burn subjects. SETTING: University research laboratory. PATIENTS: Burn patients. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Urine samples from catheterized burn patients were collected hourly for up to 40 hours...
March 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28321473/clinical-epidemiological-insights-into-urinary-incontinence
#2
Vatché A Minassian, Tony Bazi, Walter F Stewart
INTRODUCTION AND HYPOTHESIS: Urinary incontinence (UI) is very common and heterogeneous among women with limited knowledge of progression or prognosis. Evidence based on clinical epidemiology can help to better understand the natural history of UI. METHODS: We examine the challenges of UI definition and its subtypes, its impact on quality of life and health-seeking behavior. We review the proposed pathophysiology of UI subtypes and known risk factors as they relate to our current knowledge of the disease state...
March 20, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28287476/absorption-metabolism-and-excretion-of-cranberry-poly-phenols-in-humans-a-dose-response-study-and-assessment-of-inter-individual-variability
#3
Rodrigo P Feliciano, Charlotte E Mills, Geoffrey Istas, Christian Heiss, Ana Rodriguez-Mateos
The beneficial health effects of cranberries have been attributed to their (poly)phenol content. Recent studies have investigated the absorption, metabolism and excretion of cranberry (poly)phenols; however, little is known about whether they follow a dose response in vivo at different levels of intake. An acute double-blind randomized controlled trial in 10 healthy men with cranberry juices containing 409, 787, 1238, 1534 and 1910 mg total (poly)phenols was performed. Blood and urine were analyzed by UPLC-Q-TOF-MS...
March 11, 2017: Nutrients
https://www.readbyqxmd.com/read/28273841/comprehensive-metabolomic-analysis-in-blood-urine-fat-and-muscle-in-men-with-metabolic-syndrome-a-randomized-placebo-controlled-clinical-trial-on-the-effects-of-resveratrol-after-four-months-treatment
#4
Anne Sofie Korsholm, Thomas Nordstrøm Kjær, Marie Juul Ornstrup, Steen Bønløkke Pedersen
Resveratrol possesses several beneficial metabolic effects in rodents, while the effects of resveratrol in humans remain unclear. Therefore, we performed a non-targeted comprehensive metabolomic analysis on blood, urine, adipose tissue, and skeletal muscle tissue in middle-aged men with metabolic syndrome randomized to either resveratrol or placebo treatment for four months. Changes in steroid hormones across all four matrices were the most pronounced changes observed. Resveratrol treatment reduced sulfated androgen precursors in blood, adipose tissue, and muscle tissue, and increased these metabolites in urine...
March 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28217698/questions-and-challenges-associated-with-studying-the-microbiome-of-the-urinary-tract
#5
REVIEW
Yige Bao, Kait F Al, Ryan M Chanyi, Samantha Whiteside, Malcom Dewar, Hassan Razvi, Gregor Reid, Jeremy P Burton
Urologists are typically faced with clinical situations for which the microbiome may have been a contributing factor. Clinicians have a good understanding regarding the role of bacteria related to issues such as antibiotic resistance; however, they generally have a limited grasp of how the microbiome may relate to urological issues. The largest part of the human microbiome is situated in the gastrointestinal tract, and though this is mostly separated from the urinary system, bacterial dissemination and metabolic output by this community is thought to have a significant influence on urological conditions...
January 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28217694/probiotics-for-prevention-of-urinary-stones
#6
John C Lieske
BACKGROUND: Urinary supersaturation is one key determinant of calcium oxalate (CaOx) urinary stone formation, and urinary excretions of oxalate and citrate are two key determinants. Each is influenced by gastrointestinal processes. METHODS: Open label and randomized placebo studies have examined the effect of oral probiotic preparations on urinary supersaturation and oxalate excretion. Cross sectional studies in humans have studied the association of Oxalobacter formigenes colonization status and urinary oxalate excretion and prevalence of urinary stones...
January 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28178051/urinary-microbiome-and-cytokine-levels-in-women-with-interstitial-cystitis
#7
Melinda G Abernethy, Amy Rosenfeld, James R White, Margaret G Mueller, Christina Lewicky-Gaupp, Kimberly Kenton
OBJECTIVE: To investigate differences in the urinary microbiome and cytokine levels between women with and without interstitial cystitis and to correlate differences with scores on standardized symptom severity scales and depression and anxiety screening tools. METHODS: Our cross-sectional study compared women presenting to a pelvic floor clinic and diagnosed with interstitial cystitis over a 6-month period with age-matched women in a control group from the same institution...
March 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28033847/impact-of-polymicrobial-biofilms-in-catheter-associated-urinary-tract-infections
#8
Andreia S Azevedo, Carina Almeida, Luís F Melo, Nuno F Azevedo
Recent reports have demonstrated that most biofilms involved in catheter-associated urinary tract infections are polymicrobial communities, with pathogenic microorganisms (e.g. Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae) and uncommon microorganisms (e.g. Delftia tsuruhatensis, Achromobacter xylosoxidans) frequently co-inhabiting the same urinary catheter. However, little is known about the interactions that occur between different microorganisms and how they impact biofilm formation and infection outcome...
December 30, 2016: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28003647/metabolic-phenotyping-for-discovery-of-urinary-biomarkers-of-diet-xenobiotics-and-blood-pressure-in-the-intermap-study-an-overview
#9
REVIEW
Queenie Chan, Ruey Leng Loo, Timothy M D Ebbels, Linda Van Horn, Martha L Daviglus, Jeremiah Stamler, Jeremy K Nicholson, Elaine Holmes, Paul Elliott
The etiopathogenesis of cardiovascular diseases (CVDs) is multifactorial. Adverse blood pressure (BP) is a major independent risk factor for epidemic CVD affecting ~40% of the adult population worldwide and resulting in significant morbidity and mortality. Metabolic phenotyping of biological fluids has proven its application in characterizing low-molecular-weight metabolites providing novel insights into gene-environmental-gut microbiome interaction in relation to a disease state. In this review, we synthesize key results from the INTERnational study of MAcro/micronutrients and blood Pressure (INTERMAP) Study, a cross-sectional epidemiologic study of 4680 men and women aged 40-59 years from Japan, the People's Republic of China, the United Kingdom and the United States...
December 22, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27974055/host-microbiome-interactions-in-human-type-2-diabetes-following-prebiotic-fibre-galacto-oligosaccharide-intake
#10
Camilla Pedersen, Edith Gallagher, Felicity Horton, Richard J Ellis, Umer Z Ijaz, Huihai Wu, Etana Jaiyeola, Onyinye Diribe, Thibaut Duparc, Patrice D Cani, Glenn R Gibson, Paul Hinton, John Wright, Roberto La Ragione, M Denise Robertson
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)...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27966366/metabolic-phenotype-of-obesity-in-a-saudi-population
#11
Muhammad Saeed Ahmad, Munirah Alsaleh, Torben Kimhofer, Sultan Ahmad, Wisam Jamal, Siraj Omar Wali, Jeremy Kirk Nicholson, Zoheir Abdullah Damanhouri, Elaine Holmes
Metabolic phenotyping of obese populations can shed light on understanding environmental interactions underpinning obesogenesis. Obesity and its comorbidities are a major health and socioeconomic concern globally and are highly prevalent in the Middle East. We employed nuclear magnetic resonance spectroscopy to characterize the metabolic signature of urine and blood plasma for a cohort of obese (n = 50) compared to non-obese (n = 48) Saudi participants. The urinary metabolic phenotype of obesity was characterized by higher concentrations of N-acetyl glycoprotein fragments, bile acids, lysine, and methylamines and lower concentrations of tricarboxylic acid cycle intermediates, glycine, and gut microbial metabolites...
January 20, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/27904735/urinary-metabolomics-of-young-italian-autistic-children-supports-abnormal-tryptophan-and-purine-metabolism
#12
Federica Gevi, Lello Zolla, Stefano Gabriele, Antonio M Persico
BACKGROUND: Autism spectrum disorder (ASD) is still diagnosed through behavioral observation, due to a lack of laboratory biomarkers, which could greatly aid clinicians in providing earlier and more reliable diagnoses. Metabolomics on human biofluids provides a sensitive tool to identify metabolite profiles potentially usable as biomarkers for ASD. Initial metabolomic studies, analyzing urines and plasma of ASD and control individuals, suggested that autistic patients may share some metabolic abnormalities, despite several inconsistencies stemming from differences in technology, ethnicity, age range, and definition of "control" status...
2016: Molecular Autism
https://www.readbyqxmd.com/read/27898455/clinical-implications-of-the-microbiome-in-urinary-tract-diseases
#13
Andreas Hiergeist, André Gessner
PURPOSE OF REVIEW: The purpose of this review is to outline and evaluate the most recent literature on the role of the microbiome in urinary tract diseases. RECENT FINDINGS: High throughput molecular DNA sequencing of bacterial 16S rRNA genes enabled the analysis of complex microbial communities inhabiting the human urinary tract. Several recent studies have identified bacterial taxa of the urinary microbiome to impact urinary tract diseases including interstitial cystitis, urgency urinary incontinence or calcium oxalate stone formation...
March 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/27888158/metabolomic-profile-of-children-with-recurrent-respiratory-infections
#14
Sara Bozzetto, Paola Pirillo, Silvia Carraro, Mariangela Berardi, Laura Cesca, Matteo Stocchero, Giuseppe Giordano, Stefania Zanconato, Eugenio Baraldi
Recurrent respiratory infections (RRI) represent a widespread condition which has a severe social and economic impact. Immunostimulants are used for their prevention. It is crucial to better characterize children with RRI to refine their diagnosis and identify effective personalized prevention strategies. Metabolomics is a high-dimensional biological method that can be used for hypothesis-free biomarker profiling, examining a large number of metabolites in a given sample using spectroscopic techniques. Multivariate statistical data analysis then enables us to infer which metabolic information is relevant to the biological characterization of a given physiological or pathological condition...
January 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27861551/genomes-of-gardnerella-strains-reveal-an-abundance-of-prophages-within-the-bladder-microbiome
#15
Kema Malki, Jason W Shapiro, Travis K Price, Evann E Hilt, Krystal Thomas-White, Trina Sircar, Amy B Rosenfeld, Gina Kuffel, Michael J Zilliox, Alan J Wolfe, Catherine Putonti
Bacterial surveys of the vaginal and bladder human microbiota have revealed an abundance of many similar bacterial taxa. As the bladder was once thought to be sterile, the complex interactions between microbes within the bladder have yet to be characterized. To initiate this process, we have begun sequencing isolates, including the clinically relevant genus Gardnerella. Herein, we present the genomic sequences of four Gardnerella strains isolated from the bladders of women with symptoms of urgency urinary incontinence; these are the first Gardnerella genomes produced from this niche...
2016: PloS One
https://www.readbyqxmd.com/read/27847292/the-role-of-the-microbiome-in-kidney-stone-formation
#16
REVIEW
Mansi Mehta, David S Goldfarb, Lama Nazzal
Nephrolithiasis is a complex disease of worldwide prevalence that is influenced by both genetic and environmental factors. About 75% of kidney stones are predominantly composed of calcium oxalate and urinary oxalate is considered a crucial risk factor. Microorganisms may have a role in the pathogenesis and prevention of kidney stones and the involvement of the intestinal microbiome in this renal disease has been a recent area of interest. Oxalobacter formigenes is a gram negative bacteria that degrades oxalate in the gut decreasing urinary oxalate excretion...
December 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27795388/biotic-interactions-shape-the-ecological-distributions-of-staphylococcus-species
#17
Erik K Kastman, Noelani Kamelamela, Josh W Norville, Casey M Cosetta, Rachel J Dutton, Benjamin E Wolfe
Many metagenomic sequencing studies have observed the presence of closely related bacterial species or genotypes in the same microbiome. Previous attempts to explain these patterns of microdiversity have focused on the abiotic environment, but few have considered how biotic interactions could drive patterns of microbiome diversity. We dissected the patterns, processes, and mechanisms shaping the ecological distributions of three closely related Staphylococcus species in cheese rind biofilms. Paradoxically, the most abundant species (S...
October 18, 2016: MBio
https://www.readbyqxmd.com/read/27738739/methodology-for-a-vaginal-and-urinary-microbiome-study-in-women-with-mixed-urinary-incontinence
#18
Yuko M Komesu, Holly E Richter, Darrell L Dinwiddie, Nazema Y Siddiqui, Vivian W Sung, Emily S Lukacz, Beri Ridgeway, Lily A Arya, Halina M Zyczynski, Rebecca G Rogers, Marie Gantz
INTRODUCTION AND HYPOTHESIS: We describe the rationale and methods of a study designed to compare vaginal and urinary microbiomes in women with mixed urinary incontinence (MUI) and similarly aged, asymptomatic controls. METHODS: This paper delineates the methodology of a supplementary microbiome study nested in an ongoing randomized controlled trial comparing a standardized perioperative behavioral/pelvic floor exercise intervention plus midurethral sling versus midurethral sling alone for MUI...
October 13, 2016: International Urogynecology Journal
https://www.readbyqxmd.com/read/27669488/urinary-microbiome-of-kidney-transplant-patients-reveals-dysbiosis-with-potential-for-antibiotic-resistance
#19
Asha Rani, Ravi Ranjan, Halvor S McGee, Kalista E Andropolis, Dipti V Panchal, Zahraa Hajjiri, Daniel C Brennan, Patricia W Finn, David L Perkins
Recent studies have established that a complex community of microbes colonize the human urinary tract; however, their role in kidney transplant patients treated with prophylactic antibiotics remains poorly investigated. Our aim was to investigate the urinary microbiome of kidney transplant recipients. Urine samples from 21 patients after kidney transplantation and 8 healthy controls were collected. All patients received prophylactic treatment with the antibiotic combination trimethoprim-sulfamethoxazole. Metagenomic DNA was isolated from urine samples, sequenced using shotgun sequencing approach on Illumina HiSeq 2000 platform, and analyzed for microbial taxonomic and functional annotations...
March 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27633952/a-diverse-virome-in-kidney-transplant-patients-contains-multiple-viral-subtypes-with-distinct-polymorphisms
#20
Asha Rani, Ravi Ranjan, Halvor S McGee, Ahmed Metwally, Zahraa Hajjiri, Daniel C Brennan, Patricia W Finn, David L Perkins
Recent studies have established that the human urine contains a complex microbiome, including a virome about which little is known. Following immunosuppression in kidney transplant patients, BK polyomavirus (BKV) has been shown to induce nephropathy (BKVN), decreasing graft survival. In this study we investigated the urine virome profile of BKV+ and BKV- kidney transplant recipients. Virus-like particles were stained to confirm the presence of VLP in the urine samples. Metagenomic DNA was purified, and the virome profile was analyzed using metagenomic shotgun sequencing...
September 16, 2016: Scientific Reports
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