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https://www.readbyqxmd.com/read/27914083/antibody-guided-molecular-imaging-of-infective-endocarditis
#1
Kenneth L Pinkston, Peng Gao, Kavindra V Singh, Ali Azhdarinia, Barbara E Murray, Eva M Sevick-Muraca, Barrett R Harvey
In this protocol, we describe the application of using a high affinity monoclonal antibody generated against the major pilin protein component of the pilin structure of Enterococcus faecalis as a PET imaging agent for enterococcal endocarditis detection. The anti-pilin -mAb 64Cu conjugate was able to specifically label enterococcal endocarditis vegetation in vivo in a rodent endocarditis model. By targeting pili, a covalently linked surface antigen extending from the bacterial surface, we provided evidence that gram-positive pilin represent a logical surface antigen to define or target an infectious agent for molecularly guided imaging...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27914002/phenotypic-and-genotypic-characterization-of-bacteriocinogenic-enterococci-against-clostridium-botulinum
#2
Awad A Shehata, Reda Tarabees, Shereen Basiouni, Mahmoud Gamil, Ahmed S Kamal, Monika Krüger
The present study aimed to characterize Enterococcus faecalis (n = -6) and Enterococcus faecium (n = 1) isolated from healthy chickens to find a novel perspective probiotic candidate that antagonize Clostridium botulinum types A, B, D, and E. The isolated enterococci were characterized based on phenotypic properties, PCR, and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF). The virulence determinants including hemolytic activity on blood agar, gelatinase activity, sensitivity to vancomycin, and presence of gelatinase (gelE) and enterococcal surface protein (esp) virulence genes were investigated...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27912797/helminth-infections-and-gut-microbiota-a-feline-perspective
#3
Ana M Duarte, Timothy P Jenkins, Maria S Latrofa, Alessio Giannelli, Elias Papadopoulos, Luís Madeira de Carvalho, Matthew J Nolan, Domenico Otranto, Cinzia Cantacessi
BACKGROUND: Investigations of the relationships between the gut microbiota and gastrointestinal parasitic nematodes are attracting growing interest by the scientific community, driven by the need to better understand the contribution of parasite-associated changes in the composition of the gut flora to both host malnutrition and immune modulation. These studies have however been carried out mainly in humans and experimental animals, while knowledge of the make-up of the gut commensal flora in presence or absence of infection by parasitic nematodes in domestic animals is limited...
December 3, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27910210/microbiological-evaluation-of-the-extension-wire-and-percutaneous-epidural-lead-anchor-site-following-a-2-stage-cut-down-spinal-cord-stimulator-procedure
#4
Abdul Ghaaliq Lalkhen, Mahindra Chincholkar, Jiten Patel
OBJECTIVES: There are concerns regarding bacterial colonization of the temporary extension leads and subsequent infection risk using the 2-stage cut-down approach in spinal cord stimulation (SCS). We sought to quantify the extent of bacterial colonization of the temporary extension wire and percutaneous epidural lead anchor site. MATERIALS AND METHODS: We conducted a cross-sectional observational study recruiting a pragmatic sample of 25 consecutive patients listed for a cut-down trial of SCS...
December 2, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27909821/previous-bloodstream-infections-due-to-other-pathogens-as-predictors-of-carbapenem-resistant-klebsiella-pneumoniae-bacteraemia-in-colonized-patients-results-from-a-retrospective-multicentre-study
#5
D R Giacobbe, V Del Bono, P Bruzzi, S Corcione, M Giannella, A Marchese, L Magnasco, A E Maraolo, N Pagani, C Saffioti, S Ambretti, C S Cardellino, E Coppo, F G De Rosa, P Viale, C Viscoli
INTRODUCTION: the purpose of this retrospective multicenter study was to assess whether the risk of developing bloodstream infections (BSI) due to carbapenem-resistant Klebsiella pneumoniae (CRKP) in colonized patients is influenced by the occurrence of BSI due to other pathogens. METHODS: from January 2012 to March 2014, all patients with at least one rectal swab positive for CRKP and at least 30 days of previous hospital stay were included in the study. The primary outcome measure was CRKP BSI, defined as a time-to-event endpoint...
December 1, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27909431/the-microbiota-of-recreational-freshwaters-and-the-implications-for-environmental-and-public-health
#6
Chang Soo Lee, Minseok Kim, Cheonghoon Lee, Zhongtang Yu, Jiyoung Lee
The microbial communities in recreational freshwaters play important roles in both environmental and public health perspectives. In this study, the bacterial community structure and its associations with freshwater environments were investigated by analyzing the summertime microbiomes of three beach waters in Ohio (East Fork, Delaware, and Madison lakes) together with environmental and microbial water quality parameters. From the swimming season of 2009, 21 water samples were collected from the three freshwater beaches...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27908405/biosynthesis-of-selenium-nanoparticles-using-enterococcus-faecalis-and-evaluation-of-their-antibacterial-activities
#7
Sara Shoeibi, Mohammad Mashreghi
Microorganisms are capable of synthesizing metal nanoparticles, and specifically Enterococcus faecalis bacteria were tested for its ability to synthesize selenium nanoparticles (Se-NPs) from sodium selenite. The biosynthesized Se-NPs were spherical in shape with the size range of 29-195nm. Also, the TEM microscopy showed the accumulation of nano-structures as extracellular deposits. The ability of the bacteria to tolerate high levels of toxic selenite was studied by changing with different concentrations of sodium selenite (0...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27906556/combination-effect-of-cefuroxime-and-levofloxacin-against-bacteria-isolated-from-the-healthy-conjunctival-sac-and-endophthalmitis-cases-using-a-fractional-inhibitory-concentration-index
#8
Takashi Suzuki, Toshihiro Yamamoto, Tomohiko Torikai, Yuichi Ohashi
PURPOSE: Intracameral cefuroxime (CXM) and antibiotic eye drops such as fluoroquinolone are widely used for preventing endophthalmitis after cataract surgery. However, few reports are available regarding their interactions. This study was conducted to examine the in vitro interaction of CXM and levofloxacin (LVFX) against bacterial isolates from the healthy conjunctival sac before cataract surgery and from endophthalmitis cases. METHODS: The activity of each drug was determined using a broth dilution method...
December 1, 2016: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27905623/-mortality-analysis-of-enterococcus-faecium-bloodstream-infection-in-central-taiwan
#9
Chen Chang-Hua, Lin Li-Chen, Chang Yu-Jun, Chang Chih-Yen
BACKGROUND: Bloodstream infections (BSIs) due to Enterococcus faecium (E. faecium), particularly those due to vancomycin-resistant enterococcus (VRE), are still a therapeutic challenge. AIM: To evaluate mortality from BSI due to E. faecium and VRE in central Taiwan. MATERIALS AND METHODS: We retrospectively analyzed cases of significant E. faecium BSI in the Changhua Christian Hospital System between January 1, 2010 and December 31, 2013. RESULTS: Of the 76 cases, 28 patients (36...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27904826/infective-abdominal-aortitis-due-to-campylobacter-fetus-bacteremia-a-case-report-and-review-of-literature
#10
Abhinav Agrawal, Rutuja R Sikachi
Infectious aortitis (IA) is a rare but life-threatening condition, and most commonly affects the abdominal aorta or thoracic aorta. Various microorganisms have been associated with infectious thoracic aortitis, most commonly Staphylococcus, Enterococcus, Streptococcus, and Salmonella species. Campylobacter fetus (C. fetus) has been seen as a cause of infective aortitis only in a few case reports. We report a rare case of infective aortitis of the abdominal aorta caused due to C. fetus bacteremia. While C. fetus infections usually occur in patients with immunosuppression, such as malignancy, or those with diabetes mellitus, but our patient was not immunocompromised...
November 2016: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/27904627/antimicrobial-effects-of-chlorhexidine-matrica-drop-mouthwash-chamomile-extract-and-normal-saline-on-hospitalized-patients-with-endotracheal-tubes
#11
Maryam Azimi, Leila Jouybari, Shahram Moghadam, Ezatolah Ghaemi, Naser Behnampoor, Akram Sanagoo, Moslem Hesam
BACKGROUND: The functions and use of mouthwashes are variable depending on their type. Oral care in patients with endotracheal tubes is important to prevent side effects such as pneumonia. The aim of this study was to determine the antimicrobial effects of chlorhexidine, drop of Matrica mouthwash (chamomile extract), and normal saline on hospitalized patients with endotracheal tube in an intensive care unit (ICU). MATERIALS AND METHODS: In this clinical trial, 39 patients admitted to the ICU were selected by convenience sampling, were matched based on age and sex, and randomly assigned to three groups (chlorhexidine, Matrica, saline)...
September 2016: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/27904114/two-cases-of-proteinase-3-anti-neutrophil-cytoplasmic-antibody-pr3-anca-related-nephritis-in-infectious-endocarditis
#12
Kazuya Hirai, Naoto Miura, Masabumi Yoshino, Kanyu Miyamoto, Hironobu Nobata, Takuhito Nagai, Keisuke Suzuki, Shogo Banno, Hirokazu Imai
We herein report two cases of proteinase 3-anti-neutrophil cytoplasmic antibody (PR3-ANCA)-related nephritis in infectious endocarditis. In both cases, the patients were middle-aged men with proteinuria and hematuria, hypoalbuminemia, decreased kidney function, anemia, elevated C-reactive protein (CRP) levels, and PR3-ANCA positivity. Each had bacteremia, due to Enterococcus faecium in one and Streptococcus bovis in the other. One patient received aortic valve replacement therapy for aortic regurgitation with vegetation, and the other underwent tricuspid valve replacement therapy and closure of a ventricular septic defect to treat tricuspid regurgitation with vegetation...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27902396/determination-of-antimicrobial-resistance-of-enterococcus-strains-isolated-from-pigs-and-their-genotypic-characterization-by-method-of-amplification-of-dna-fragments-surrounding-rare-restriction-sites-the-adsrrs-fingerprinting
#13
Aneta Nowakiewicz, Grażyna Ziółkowska, Aleksandra Trościańczyk, Przemysław Zięba, Sebastian Gnat
In this study, we analysed phenotypic resistance profiles and their reflection in the genomic profiles of Enterococcus spp. strains isolated from pigs raised on different farms. Samples were collected from five pig farms (n=90 animals) and tested for Enterococcus. Minimum inhibitory concentrations of 12 antimicrobials were determined using the broth microdilution method, and epidemiological molecular analysis of strains belonging to selected species (E. faecalis, E. faecium and E. hirae) was performed using the ADSRRS-fingerprinting method with a few modifications...
November 28, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27895354/nosocomial-infections-in-the-icu-pens-and-spectacles-as-fomites
#14
Haris Farooq Murad, Khowaja Mohammad Inam Pal
Nosocomial infections are a major cause of morbidity and mortality. Non-medical objects known as fomites may have a role in their genesis. We investigated the significance of writing pens and spectacles as fomites. The study was conducted at Aga Khan University Hospital, Karachi, from July 2013 to September 2013. Cultures were taken from pens and/or spectacles of resident nurses, doctors and nursing assistants in intensive care unit (ICU). Organisms important in ICU nosocomial infections were targeted. Seven rounds of sampling over 3 weeks led to 55 pen and 5 spectacle samples...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27895353/bacterobilia-in-acute-cholecystitis-bile-cultures-isolates-antibiotic-sensitivities-and-antibiotic-usage-a-study-on-a-pakistani-population
#15
Yousaf Bashir Hadi, Muhammad Waqas, Hafiz Muhammad Umer, Ammar Alam, Abdul Rehman Alvi, Muhammad Rizwan Khan
Acute cholecystitis is one of the most common acute surgical conditions. Laparoscopic cholecystectomy remains the mainstay of treatment. In patients managed non-operatively, antibiotics play an important role in the treatment of cholecystitis. The current retrospective observational study was conducted at a tertiary care hospital in Karachi, and comprised medical records of patients admitted between 2008 and 2014with acute cholecystitis and in whom bile cultures were obtained. Of the 509 patients with a mean age of 51...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27895127/the-pathogenic-potential-of-proteus-mirabilis-is-enhanced-by-other-uropathogens-during-polymicrobial-urinary-tract-infection
#16
Chelsie E Armbruster, Sara N Smith, Alexandra O Johnson, Valerie DeOrnellas, Kathryn A Eaton, Alejandra Yep, Lona Mody, Weisheng Wu, Harry L T Mobley
Urinary catheter use is prevalent in health care settings, and polymicrobial colonization by urease-positive organisms, such as Proteus mirabilis and Providencia stuartii, commonly occurs with long-term catheterization. We previously demonstrated that coinfection with P. mirabilis and P. stuartii increased overall urease activity in vitro and disease severity in a model of urinary tract infection (UTI). In this study, we expanded these findings to a murine model of catheter-associated UTI (CAUTI), delineated the contribution of enhanced urease activity to coinfection pathogenesis, and screened for enhanced urease activity with other common CAUTI pathogens...
November 28, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27894963/longitudinal-surveillance-on-antibiogram-of-important-gram-positive-pathogens-in-southern-china-2001-to-2015
#17
Zhenbo Xu, Jinhong Xie, Brian M Peters, Bing Li, Lin Li, Guangchao Yu, Mark E Shirtliff
OBJECTIVES: A longitudinal surveillance aimed to investigate the antibiogram of three genus of important Gram-positive pathogens in Southern China during 2001-2015. METHODS: A total of 3849 Staphylococcus, Enterococcus and Streptococcus strains were isolated from Southern China during 2001-2015. Bacteria identification was performed by colony morphology, Gram staining, the API commercial kit and the Vitek 2 automated system. Antimicrobial susceptibility testing was determined by disk diffusion method and MIC method...
November 25, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27894856/glycopeptide-resistance-links-with-inorganic-phosphate-metabolism-and-cell-envelope-stress
#18
REVIEW
Fernando Santos-Beneit, María Ordóñez-Robles, Juan F Martín
Antimicrobial resistance is a critical health issue today. Many pathogens have become resistant to many or all available antibiotics and limited new antibiotics are in the pipeline. Glycopeptides are used as a 'last resort' antibiotic treatment for many bacterial infections, but worryingly, glycopeptide resistance has spread to very important pathogens such as Enterococcus faecium and Staphylococcus aureus. Bacteria confront multiple stresses in their natural environments, including nutritional starvation and the action of cell-wall stressing agents...
November 25, 2016: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27894288/bactericidal-and-antioxidant-properties-of-essential-oils-from-the-fruits-dennettia-tripetala-g-baker
#19
Sunday O Okoh, Benson C Iweriegbor, Omobola O Okoh, Uchechukwu U Nwodo, Anthony I Okoh
BACKGROUND: The antibacterial and antioxidant properties of the essential oils (EOs) of unripe and ripe fruits of Dennettia tripetala and their potential for the management of infectious and oxidative-stress diseases were investigated in-vitro in this study. METHOD: Essential oil obtained from the fruit in Clevenger modified apparatus, was characterized by high resolution GC-MS, while antioxidant and antibacterial properties were tested by spectrophotometric and agar diffusion methods respectively...
November 28, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27893790/detection-of-a-cfr-b-variant-in-german-enterococcus-faecium-clinical-isolates-and-the-impact-on-linezolid-resistance-in-enterococcus-spp
#20
Jennifer K Bender, Carola Fleige, Ingo Klare, Stefan Fiedler, Alexander Mischnik, Nico T Mutters, Kate E Dingle, Guido Werner
The National Reference Centre for Staphylococci and Enterococci in Germany has received an increasing number of clinical linezolid-resistant E. faecium isolates in recent years. Five isolates harbored a cfr(B) variant gene locus the product of which is capable of conferring linezolid resistance. The cfr(B)-like methyltransferase gene was also detected in Clostridium difficile. Antimicrobial susceptibility was determined for cfr(B)-positive and linezolid-resistant E. faecium isolates and two isogenic C. difficile strains...
2016: PloS One
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