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https://www.readbyqxmd.com/read/28087985/prophylactic-tributyrin-treatment-mitigates-chronic-binge-alcohol-induced-intestinal-barrier-and-liver-injury
#1
Gail A Cresci, Bryan Glueck, Megan R McMullen, Wei Xin, Danielle Allende, Laura E Nagy
BACKGROUND/AIM: Impaired gut-liver axis is a potential factor contributing to alcoholic liver disease. Ethanol depletes intestinal integrity and causes gut dysbiosis. Butyrate, a fermentation byproduct of gut microbiota, is altered negatively following chronic ethanol exposure. This study aimed to determine whether prophylactic tributyrin could protect the intestinal barrier and liver in mice during combined chronic-binge ethanol exposure. METHODS: C57BL/6 J mice exposed to 5% v/v ethanol-containing diet for 10 days received a single ethanol gavage (5 g/kg) 9 hrs prior to euthanasia...
January 14, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28087966/gastric-ulcer-that-turned-out-to-be-metastasis-of-a-synovial-sarcoma-a-case-report-and-literature-review
#2
T Samuel, S Norly, P Ros'aini
Primary gastrointestinal synovial sarcoma or its metastases to the gastrointestinal tract is rare. Here we present a case of 56-year-old gentleman with left thigh synovial sarcoma and gastric metastases along with the literature review.
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28087949/the-vaginal-microbiota-and-urinary-tract-infection
#3
Ann E Stapleton
The vagina is a key anatomical site in the pathogenesis of urinary tract infection (UTI) in women, serving as a potential reservoir for infecting bacteria and a site at which interventions may decrease the risk of UTI. The vaginal microbiota is a dynamic and often critical factor in this pathogenic interplay, because changes in the characteristics of the vaginal microbiota resulting in the loss of normally protective Lactobacillus spp. increase the risk of UTI. These alterations may result from the influence of estrogen deficiency, antimicrobial therapy, contraceptives, or other causes...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087946/invasion-of-host-cells-and-tissues-by-uropathogenic-bacteria
#4
Adam J Lewis, Amanda C Richards, Matthew A Mulvey
Within the mammalian urinary tract uropathogenic bacteria face many challenges, including the shearing flow of urine, numerous antibacterial molecules, the bactericidal effects of phagocytes, and a scarcity of nutrients. These problems may be circumvented in part by the ability of uropathogenic Escherichia coli and several other uropathogens to invade the epithelial cells that line the urinary tract. By entering host cells, uropathogens can gain access to additional nutrients and protection from both host defenses and antibiotic treatments...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087935/diagnosis-treatment-and-prevention-of-urinary-tract-infection
#5
Paula Pietrucha-Dilanchian, Thomas M Hooton
UTI may involve the lower or upper urinary tract and may be uncomplicated or complicated. The emphasis of this chapter is uncomplicated UTI. The diagnosis of uncomplicated cystitis (bladder infection) and pyelonephritis (kidney infection) is usually easily made based on the clinical presentation, whereas the diagnosis in patients with complicated UTI is often more complex. Thus uncomplicated cystitis is usually manifested by dysuria, frequency and/or urgency without fever, and pyelonephritis is usually manifested by fever and back pain/costovertebral angle tenderness...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087926/urinary-tract-infections-in-infants-and-children
#6
Theresa A Schlager
Urinary tract infections (UTI) are one of the most common infections in children and symptoms may be nonspecific. The risk of renal scarring is highest in children under 1 year of age with febrile UTI and high-grade vesicoureteral reflux (VUR). Although treatment of UTI is usually straightforward, given increased rates of antimicrobial resistance worldwide, the choice of treatment for pediatric UTI should be guided by community resistance patterns whenever feasible. The benefit of antimicrobial prophylaxis after first UTI and/or in the presence of VUR remains controversial, but a recent meta-analysis supports continuous antimicrobial prophylaxis in children with VUR, indicating a need for more research in this area...
October 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087925/host-responses-to-urinary-tract-infections-and-emerging-therapeutics-sensation-and-pain-within-the-urinary-tract
#7
Lori A Birder, David J Klumpp
Urinary tract infection (UTI) pathogenesis is understood increasingly at the level of the uropathogens and the cellular and molecular mediators of host inflammatory responses. However, little is known about the mediators of symptoms during UTI and what distinguishes symptomatic events from asymptomatic bacteriuria. Here, we review bladder physiology and sensory pathways in the context of an emerging literature from murine models dissecting the host and pathogen factors mediating pain responses during UTI. The bladder urothelium is considered a mediator of sensory responses and appears to play a role in UTI pain responses...
October 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087835/study-of-tio2-p25-nanoparticles-genotoxicity-on-lung-blood-and-liver-cells-in-lung-overload-and-non-overload-conditions-after-repeated-respiratory-exposure-in-rats
#8
Charlène Relier, Marielle Dubreuil, Omar Lozano Garcia, Eugenia Cordelli, Jorge Mejia, Patrizia Eleuteri, Franck Robidel, Thomas Loret, Francesca Pacchierotti, Stéphane Lucas, Ghislaine Lacroix, Bénédicte Trouiller
Inhaled titanium dioxide (TiO2) nanoparticles (NPs) can have negative health effects, and have been shown to cause respiratory tract cancer in rats. Inflammation has been linked to oxidative stress, and both have been described as possible mechanisms for genotoxicity of NPs, but rarely examined side-by-side in animal studies. In the present study, a wide range of complementary endpoints have been performed to study TiO2 P25 NP-induced genotoxicity in lung overload and non-overload conditions. Additionally, lung burden, inflammation, cytotoxicity and oxidative stress have also been evaluated in order to link genotoxicity with these responses...
January 13, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28087776/seed-plant-specific-gene-lineages-involved-in-carpel-development
#9
Kai C Pfannebecker, Matthias Lange, Oliver Rupp, Annette Becker
Evolutionary innovations are important drivers of speciation and some are the defining characters of entire phyla. One such major innovation is the carpel, the unifying character and most complex plant organ, composed of many clearly distinct tissue types to ensure reproductive success. The origin of the carpel is unknown, but many components of the gene regulatory network (GRN) governing carpel development and their genetic interactions are known from the core eudicot Arabidopsis thaliana To unravel the evolution of the carpel GRN and to discriminate between "early" and "late" steps in carpel evolution we calculated thorough phylogeny reconstructions based on sequenced genomes...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28087531/salivary-gluten-degradation-and-oral-microbial-profiles-in-health-and-celiac-disease
#10
Na Tian, Lina Faller, Daniel A Leffler, Ciaran P Kelly, Joshua Hansen, Jos A Bosch, Guoxian Wei, Bruce J Paster, Detlef Schuppan, Eva J Helmerhorst
: Celiac disease (CD) is a chronic immune-mediated enteropathy induced by dietary gluten in genetically predisposed individuals. Saliva harbors the second highest bacterial load of the GI tract after the colon. Moreover, saliva contains gluten-degrading enzymes produced by oral bacteria that may modify gluten processing in the intestine and susceptibility to celiac disease (CD). AIM: To investigate salivary enzymatic activities and oral microbial profiles in healthy subjects vs patients with classical and refractory CD...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28087489/neurite-density-index-is-sensitive-to-age-related-differences-in-the-developing-brain
#11
Sila Genc, Charles B Malpas, Scott K Holland, Richard Beare, Timothy J Silk
PURPOSE: White matter development during childhood and adolescence is characterised by increasing white matter coherence and organisation. Commonly used scalar metrics, such as fractional anisotropy (FA), are sensitive to multiple mechanisms of white matter change and therefore unable to distinguish between mechanisms that change during development. We investigate the relationship between age and neurite density index (NDI) from neurite orientation dispersion and density imaging (NODDI), and the age-classification accuracy of NDI compared with FA, in a developmental cohort...
January 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28087464/mitochondrial-reactive-oxygen-species-regulate-fungal-protease-induced-inflammatory-responses
#12
Yun Hee Kim, Seung-Hyo Lee
Epidemiological studies have shown that fungal infections are a main cause of respiratory tract diseases, such as asthma, bronchopneumonia, intoxication, and invasive fungal disease. Fungi such as Aspergillus and Candida species have become increasingly important pathogens as the global climate changes. Accordingly, in this study, we evaluated the toxicological potential of Aspergillus protease in the lower respiratory tract. Exposure of Aspergillus protease to A549 cells induced upregulation of tumor necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, and intercellular adhesion molecule (ICAM)-1 mRNAs and increased production of interleukin (IL)-8 and MCP-1 protein through enhanced mitochondrial reactive oxygen species (ROS) generation and activation of mitogen-activated protein kinase (MAPK) and activator protein (AP)-1...
January 10, 2017: Toxicology
https://www.readbyqxmd.com/read/28087413/nesfatin-1-modulates-murine-gastric-vagal-afferent-mechanosensitivity-in-a-nutritional-state-dependent-manner
#13
Stephen J Kentish, Hui Li, Claudine L Frisby, Amanda J Page
Food intake is regulated by vagal afferent signals from the stomach. Nesfatin-1 is an anorexigenic peptide produced within the gastrointestinal tract and has well defined central effects. We aimed to determine if nesfatin-1 can modulate gastric vagal afferent signals in the periphery and further whether this is altered in different nutritional states. Female C57BL/6J mice were fed either a standard laboratory diet (SLD) or a high fat diet (HFD) for 12 weeks or fasted overnight. Plasma nucleobindin-2 (NUCB2; nesfatin-1 precursor)/nesfatin-1 levels were assayed, the expression of NUCB2 in the gastric mucosa and adipose tissue was assessed using real-time quantitative reverse-transcription polymerase chain reaction...
January 10, 2017: Peptides
https://www.readbyqxmd.com/read/28087357/early-effect-of-bariatric-surgery-on-urogenital-function-in-morbidly-obese-men
#14
Maha Aleid, Asif Muneer, Sara Renshaw, Jason George, Andrew D Jenkinson, Marco Adamo, Mohamed Elkalaawy, Rachel Batterham, David J Ralph, Majid Hashemi, Selim Cellek
INTRODUCTION: Obesity is an independent risk factor for erectile dysfunction (ED) and lower urinary tract symptoms (LUTS). Bariatric surgery has been shown to improve erectile function and urinary symptoms in medium- to long-term studies (3- to 12-month postoperative follow-up). AIM: To investigate the early effect (1 month postoperatively) of bariatric surgery on ED and LUTS, which has not previously been investigated. METHODS: Morbidly obese men (body mass index > 35 kg/m(2)) undergoing bariatric surgery were asked to complete the International Index of Erectile Function (IIEF) and International Prostate Symptom Score (IPSS) questionnaires before surgery and 1, 3, and 6 months after surgery...
January 10, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28087354/effect-of-piroxicam-on-lipid-membranes-drug-encapsulation-and-gastric-toxicity-aspects
#15
Natalia Wilkosz, Sami Rissanen, Małgorzata Cyza, Renata Szybka, Maria Nowakowska, Alex Bunker, Tomasz Róg, Mariusz Kepczynski
Uptake of piroxicam, a non-steroidal anti-inflammatory drug, from the intestines after oral intake is limited due to its low solubility and its wide use is associated with several side effects related to the gastrointestinal tract. In this study, all-atom molecular dynamics (MD) simulations and fluorescent spectroscopy were employed to investigate the interaction of piroxicam in neutral, zwitterionic, and cationic forms with lipid bilayers composed of phosphatidylcholine, cholesterol, and PEGylated lipids. Our study was aimed to assess the potential for encapsulation of piroxicam in liposomal carriers and to shed more light on the process of gastrointestinal tract injury by the drug...
January 10, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28087321/enteric-nervous-system-development-a-crest-cell-s-journey-from-neural-tube-to-colon
#16
REVIEW
Nandor Nagy, Allan M Goldstein
The enteric nervous system (ENS) is comprised of a network of neurons and glial cells that are responsible for coordinating many aspects of gastrointestinal (GI) function. These cells arise from the neural crest, migrate to the gut, and then continue their journey to colonize the entire length of the GI tract. Our understanding of the molecular and cellular events that regulate these processes has advanced significantly over the past several decades, in large part facilitated by the use of rodents, avians, and zebrafish as model systems to dissect the signals and pathways involved...
January 10, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28087318/etiologies-of-community-onset-urinary-tract%C3%A2-infections-requiring-hospitalization-and%C3%A2-antimicrobial-susceptibilities-of%C3%A2-causative-microorganisms
#17
Chih-Chien Chiu, Tzu-Chao Lin, Rui-Xin Wu, Ya-Sung Yang, Po-Jen Hsiao, Yi Lee, Jung-Chung Lin, Feng-Yee Chang
BACKGROUND: Community-onset urinary tract infections (CoUTIs) are the most common bacterial infections, and a decline in antibiotic susceptibility causes many clinical challenges. Adequate empiric antibiotic treatment can decrease unnecessary hospital stays and complications, while reducing the antimicrobial resistance progression. METHODS: From October 2014 to April 2015, we retrospectively enrolled patients who were at least 18 years old and required hospitalization for CoUTIs...
December 18, 2016: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28087273/chitosan-cross-linked-with-poly-ethylene-glycol-dialdehyde-via-reductive-amination-as-effective-controlled-release-carriers-for-oral-protein-drug-delivery
#18
Zi-Wei Jing, Zhi-Wei Ma, Chen Li, Yi-Yang Jia, Min Luo, Xi-Xi Ma, Si-Yuan Zhou, Bang-Le Zhang
The covalently cross-linked chitosan-poly(ethylene glycol)1540 derivatives have been developed as a controlled release system with potential for the delivery of protein drug. The swelling characteristics of the hydrogels based on these derivatives as the function of different PEG content and the release profiles of a model protein (bovine serum albumin, BSA) from the hydrogels were evaluated in simulated gastric fluid with or without enzyme in order to simulate the gastrointestinal tract conditions. The derivatives cross-linked with difunctional PEG1540-dialdehyde via reductive amination can swell in alkaline pH and remain insoluble in acidic medium...
December 31, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28087240/lactobacillus-deficient-cervicovaginal-bacterial-communities-are-associated-with-increased-hiv-acquisition-in-young-south-african-women
#19
Christina Gosmann, Melis N Anahtar, Scott A Handley, Mara Farcasanu, Galeb Abu-Ali, Brittany A Bowman, Nikita Padavattan, Chandni Desai, Lindsay Droit, Amber Moodley, Mary Dong, Yuezhou Chen, Nasreen Ismail, Thumbi Ndung'u, Musie S Ghebremichael, Duane R Wesemann, Caroline Mitchell, Krista L Dong, Curtis Huttenhower, Bruce D Walker, Herbert W Virgin, Douglas S Kwon
Elevated inflammation in the female genital tract is associated with increased HIV risk. Cervicovaginal bacteria modulate genital inflammation; however, their role in HIV susceptibility has not been elucidated. In a prospective cohort of young, healthy South African women, we found that individuals with diverse genital bacterial communities dominated by anaerobes other than Gardnerella were at over 4-fold higher risk of acquiring HIV and had increased numbers of activated mucosal CD4(+) T cells compared to those with Lactobacillus crispatus-dominant communities...
January 9, 2017: Immunity
https://www.readbyqxmd.com/read/28087230/the-impact-of-obesity-on-febrile-urinary-tract-infection-and-renal-scarring-in-children-with-vesicoureteral-reflux
#20
H J Byun, J Y Ha, W Jung, B H Kim, C H Park, C I Kim
INTRODUCTION: It has become clear that obesity is associated with a variety of infectious diseases, including urinary tract infection (UTI) and renal scarring. OBJECTIVE: The aim of this study was to evaluate the association between obesity and the degree of febrile UTI (fUTI) and renal scarring in children with vesicoureteral reflux (VUR), and to stratify the results into obesity subcategories. STUDY DESIGN: A total of 186 patients were diagnosed with VUR between January 2002 and December 2008...
October 1, 2016: Journal of Pediatric Urology
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