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https://www.readbyqxmd.com/read/27936346/antibodies-to-staphylococcus-aureus-capsular-polysaccharides-5-and-8-perform-similarly-in-vitro-but-are-functionally-distinct-in-vivo
#1
Bo Liu, Saeyoung Park, Christopher D Thompson, Xue Li, Jean C Lee
The capsular polysaccharide (CP) produced by Staphylococcus aureus is a virulence factor that allows the organism to evade uptake and killing by host neutrophils. Polyclonal antibodies to the serotype 5 (CP5) and type 8 (CP8) capsular polysaccharides are opsonic and protect mice against experimental bacteremia provoked by encapsulated staphylococci. Thus, passive immunotherapy using CP antibodies has been considered for the prevention or treatment of invasive antibiotic-resistant S. aureus infections. In this report, we generated monoclonal antibodies (mAbs) against S...
December 9, 2016: Virulence
https://www.readbyqxmd.com/read/27936245/in-vitro-selective-growth-inhibitory-effect-of-8-hydroxyquinoline-on-clostridium-perfringens-versus-bifidobacteria-in-a-medium-containing-chicken-ileal-digesta
#2
Eva Skrivanova, Filip Van Immerseel, Petra Hovorkova, Ladislav Kokoska
Clostridium perfringens-induced necrotic enteritis is generally controlled by antibiotics. However, because of increasing antibiotic resistance, other antibacterial agents are required, preferably ones that do not affect the beneficial intestinal microbiota of the host. This study evaluated the in vitro selective growth-inhibitory effect of 8-hydroxyquinoline (8HQ) on C. perfringens vs. bifidobacteria in a medium containing chicken ileal digesta. Prior to the experiments, the minimum inhibitory concentrations of 8HQ and penicillin G were determined by broth microdilution assay...
2016: PloS One
https://www.readbyqxmd.com/read/27936101/susceptibility-to-aminoglycosides-and-distribution-of-aph-and-aac-3-xi-genes-among-corynebacterium-striatum-clinical-isolates
#3
Jesús Navas, Marta Fernández-Martínez, Carlos Salas, María Eliecer Cano, Luis Martínez-Martínez
Corynebacterium striatum is an opportunistic pathogen, often multidrug-resistant, which has been associated with serious infections in humans. Aminoglycosides are second-line or complementary antibiotics used for the treatment of Corynebacterium infections. We investigated the susceptibility to six aminoglycosides and the molecular mechanisms involved in aminoglycoside resistance in a collection of 64 Corynebacterium striatum isolated in our laboratory during the period 2005-2009. Antimicrobial susceptibility was determined using E-test...
2016: PloS One
https://www.readbyqxmd.com/read/27936054/high-prevalence-of-faecal-carriage-of-esbl-producing-enterobacteriaceae-among-children-in-dar-es-salaam-tanzania
#4
Marit G Tellevik, Bjørn Blomberg, Øyvind Kommedal, Samuel Y Maselle, Nina Langeland, Sabrina J Moyo
BACKGROUND: Faecal carriage of ESBL-producing bacteria is a potential risk for transmission and infection. Little is known about faecal carriage of antibiotic resistance in Tanzania. This study aimed to investigate the prevalence of faecal carriage of ESBL-producing Enterobacteriaceae and to identify risk factors for carriage among young children in Tanzania. METHODOLOGY/PRINCIPAL FINDINGS: From August 2010 to July 2011, children below 2 years of age were recruited in Dar es Salaam, including healthy community children (n = 250) and children hospitalized due to diarrhoea (n = 250) or other diseases (n = 103)...
2016: PloS One
https://www.readbyqxmd.com/read/27935837/patient-specific-bacteroides-genome-variants-in-pouchitis
#5
Joseph H Vineis, Daina L Ringus, Hilary G Morrison, Tom O Delmont, Sushila Dalal, Laura H Raffals, Dionysios A Antonopoulos, David T Rubin, A Murat Eren, Eugene B Chang, Mitchell L Sogin
: A 2-year longitudinal microbiome study of 22 patients who underwent colectomy with an ileal pouch anal anastomosis detected significant increases in distinct populations of Bacteroides during 9 of 11 patient visits that coincided with inflammation (pouchitis). Oligotyping and metagenomic short-read annotation identified Bacteroides populations that occurred in early samples, bloomed during inflammation, and reappeared after antibiotic treatment. Targeted cultivation of Bacteroides isolates from the same individual at multiple time points and from several patients detected subtle genomic changes, including the identification of rapidly evolving genomic elements that differentiate isogenic strains of Bacteroides fragilis from the mucosa versus lumen...
November 15, 2016: MBio
https://www.readbyqxmd.com/read/27935630/appreciable-uncertainty-regarding-benefits-and-risks-in-the-treatment-of-bacterial-vaginosis-to-prevent-preterm-birth
#6
Thor Haahr, Anne S Ersbøll, Mona A Karlsen, Jens Svare, Kirstine Sneider, Lene Hee, Louise K Weile, Agnes Ziobrowska-Bech, Claus Østergaard, Jørgen S Jensen, Rikke B Helmig, Niels Uldbjerg
As part of his speeches, the Roman senator Cato the Elder frequently uttered "Carthago delenda est" (Carthage must be destroyed). Similarly, Lamont and colleagues frequently utter that the "wrong patients with the wrong diagnosis were given wrong antibiotics at the wrong gestational age". We respect that Lamont and colleagues find it difficult to accept meta-analyses, which "cut a toe and a bit of a heel" to merge evidence from more publications, and we certainly cannot exclude the possibility that future research will change clinical practice...
December 9, 2016: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/27935539/role-of-chlamydia-pneumoniae-in-the-pathogenesis-of-hypertrophy-and-adenoid-tissue-inflammation-in-children
#7
Anna Bielicka, Beata Zielnik-Jurkiewicz, Edyta Podsiadły, Monika Prochorec-Sobieszek, Joanna Rogulska, Urszula Demkow
OBJECTIVE: A tropism to epithelial cells and lymphocytes, an inhibition of apoptosis in host cells, an ability to occurrence in persistent form resistant to antibiotic treatment are the features of Chlamydia pneumoniae, which can have connection with chronic inflammation of an adenoid tissue and adenoid hypertrophy. This study aimed to (1) detect the C. pneumoniae in an adenoid in children undergoing adenoidectomy, (2) estimate a connection between C. pneumoniae occurrence and the size of adenoid, (3) demonstration in which of adenoid cells C...
October 31, 2016: Otolaryngologia Polska. the Polish Otolaryngology
https://www.readbyqxmd.com/read/27935259/manuka-honey-sinus-irrigation-for-the-treatment-of-chronic-rhinosinusitis-a-randomized-controlled-trial
#8
Victoria S Lee, Ian M Humphreys, Patricia L Purcell, Greg E Davis
BACKGROUND: Manuka honey (MH) has been shown in vitro to be effective against biofilm-producing bacteria. This study assessed the effectiveness of MH for patients with active chronic rhinosinusitis (CRS) and prior sinus surgery. METHODS: This prospective single-blinded (clinician only) randomized controlled trial recruited patients with active CRS and prior sinus surgery. Patients received either MH or saline (SAL) sinus irrigations twice daily for 30 days and were offered oral antibiotics and/or oral/topical steroids as indicated...
December 9, 2016: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/27934833/can-minocycline-be-a-carbapenem-sparing-antibiotic-current-evidence
#9
B Veeraraghavan, C Shankar, S Vijayakumar
With the increasing incidence of multidrug-resistant organisms, there is a need for newer antibiotics. However, due to the lack of new antimicrobial agents, it is necessary to re-evaluate the older agents like minocycline which is a second-line antimicrobial agent. In this study, minocycline susceptibility testing was performed for 693 Escherichia coli, 316 Klebsiella spp. and 89 Acinetobacter spp. Among extended spectrum beta-lactamase producing E. coli and Klebsiella spp. percentage susceptibility to minocycline were 76 and 85, respectively...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27934830/coagulase-negative-staphylococci-causing-blood-stream-infection-at-an-indian-tertiary-care-hospital-prevalence-antimicrobial-resistance-and-molecular-characterisation
#10
S Singh, B Dhawan, A Kapil, S K Kabra, A Suri, V Sreenivas, B K Das
INTRODUCTION: Recent years have seen a rise of coagulase-negative staphylococci (CoNS) from common contaminants to agents of nosocomial blood stream infections (BSI's). Molecular typing and establishing a correlation with antibiotic resistance is essential particularly in countries like India where genotyping studies for drug-resistant CoNS are sparse. METHODS: A prospective study was done over 18 months, wherein 42,693 blood samples were received, and 59 patients with BSI due to CoNS were evaluated...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27934821/drug-susceptibility-of-rapid-and-slow-growing-non-tuberculous-mycobacteria-isolated-from-symptomatics-for-pulmonary-tuberculosis-central-india
#11
B Goswami, P Narang, P S Mishra, R Narang, U Narang, D K Mendiratta
BACKGROUND: Non-tuberculous mycobacteria (NTM) are emerging as important pathogens. Their treatment also differs from that of Mycobacterium tuberculosis. In India, any datum on them is scarce as species identification and drug susceptibility are not performed in most laboratories. Susceptibility also differs from one geographic area to another, and in our country, there are no data even to guide the clinicians to start treatment empirically. METHODOLOGY: The present study endeavours to generate drug susceptibility data on NTM isolated from sputum samples collected and stored from 6445 symptomatics for pulmonary tuberculosis during a prevalence survey and from specimens received from the hospital...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27934622/-antibioticscout-online-tool-for-antimicrobial-stewardship-in-veterinary-medicine
#12
R Peter, C Müntener, D Demuth, D Heim, M Mevissen, G Schüpbach-Regula, S Schuller, F Stucki, B Willi, H Naegeli
Resistances to antimicrobials pose serious public health challenges. This issue concerns both human and veterinary medicine and can only be solved by a multidisciplinary approach. A comprehensive concept is, therefore, being worked out within the StAR (strategy antibiotic resistance) program in order to preserve the effectiveness of antibiotics for humans as well as animals. In this context, the AntibioticScout (www.AntibioticScout. ch) offers a new online tool for the prudent use of antibiotics in veterinary medicine...
December 2016: Schweizer Archiv Für Tierheilkunde
https://www.readbyqxmd.com/read/27933401/improvement-of-abnormal-vaginal-flora-in-ugandan-women-by-self-testing-and-short-use-of-intravaginal-antimicrobials
#13
G Donders, G Bellen, F Donders, J Pinget, I Vandevelde, T Michiels, J Byamughisa
The vaginal composition of African women is more often lactobacillus-deficient compared to that of women from other areas around the world. Lactobacillus-deficient microflora is a known risk factor for serious health problems, such as preterm birth, cervix cancer, and entrapment of human immunodeficiency virus (HIV) and other sexually transmitted infections (STIs). The aim of this study was to assess the effect of local vaginal antibiotic or antiseptic treatment on abnormal vaginal flora (AVF), aerobic vaginitis (AV), and bacterial vaginosis (BV) among women in rural, semi-urban, and urban areas in Uganda, as compared to placebo...
December 8, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27933250/clinical-analysis-on-430-cases-of-infantile-purulent-meningitis
#14
Zhihui He, Xiujuan Li, Li Jiang
BACKGROUND: Purulent meningitis (PM) usually caused by a variety of pyogenic infection, is a kind of central nervous system infectious disease mostly common in children. It is easily misdiagnosed and its symptoms are varied. Excessive application of broad-spectrum antibiotics results in increased sickness and death of infants and young children. In this study, clinical data of 430 cases of PM in infants were analyzed to summarize the clinical experiences so as to achieve early diagnosis and early treatment of PM...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933242/transtuzumab-induced-organizing-pneumonia-a-case-report
#15
Ajay Gupta, Louise Teo, Philip Masel, David Godbolt, Geoffrey Beadle
BACKGROUND: Patients with metastatic breast cancer often have pulmonary symptoms with varying aetiologies. Transtuzumab is an extremely important drug used in the treatment of Her 2 neu over-expressing breast cancers. In this report we describe a case of organizing pneumonia associated with use of transtuzumab in metastatic breast cancer. Only three such cases have previously been reported. CASE DESCRIPTION: A 43 year old lady with Her 2 neu 3+, estrogen and progesterone receptor positive, metastatic breast cancer was started on weekly transtuzumab and albumen bound paclitaxel...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933138/treatment-options-for-spontaneous-and-postoperative-sclerosing-mesenteritis
#16
Jennifer Klasen, Ulrich Güller, Brigitte Muff, Daniel Candinas, Christian A Seiler, René Fahrner
Sclerosing mesenteritis is a rare pathology with only a few described cases in the literature. The etiology is unclear; however, several potential triggers, including abdominal surgery and abdominal trauma, have been discussed. The pathology includes a benign acute or chronic inflammatory process affecting the adipose tissue of the mesenterium. Despite it being a rare disease, sclerosing mesenteritis is an important differential diagnosis in patients after abdominal surgery or patients presenting spontaneously with signs of acute inflammation and abdominal pain...
November 27, 2016: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27933045/what-is-the-link-between-stringent-response-endoribonuclease-encoding-type-ii-toxin-antitoxin-systems-and-persistence
#17
Bhaskar C M Ramisetty, Dimpy Ghosh, Maoumita Roy Chowdhury, Ramachandran S Santhosh
Persistence is a transient and non-inheritable tolerance to antibiotics by a small fraction of a bacterial population. One of the proposed determinants of bacterial persistence is toxin-antitoxin systems (TASs) which are also implicated in a wide range of stress-related phenomena. Maisonneuve E, Castro-Camargo M, Gerdes K. 2013. Cell 154:1140-1150 reported an interesting link between ppGpp mediated stringent response, TAS, and persistence. It is proposed that accumulation of ppGpp enhances the accumulation of inorganic polyphosphate which modulates Lon protease to degrade antitoxins...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27932936/riboflavin-along-with-antibiotics-balances-reactive-oxygen-species-and-inflammatory-cytokines-and-controls-staphylococcus-aureus-infection-by-boosting-murine-macrophage-function-and-regulates-inflammation
#18
Somrita Dey, Biswadev Bishayi
BACKGROUND: Macrophages serve as intracellular reservoirs of S. aureus. Recent in vitro studies have confirmed high level resistance by S. aureus to macrophage mediated killing and the intracellular persistence of Staphylococci may play an important role in the pathogenesis. Since this localization protects them from both cell-mediated and humoral immune responses, therefore, a successful anti-staphylococcal therapy should include the elimination of intracellular bacteria, further protecting the host cells from staphylococci-induced cell death...
2016: Journal of Inflammation
https://www.readbyqxmd.com/read/27932283/development-and-validation-of-a-liquid-chromatography-tandem-mass-spectrometry-assay-for-the-measurement-of-faecal-metronidazole
#19
Jinny Jeffery, Zoe J Vincent, Ruth M Ayling, Stephen J Lewis
BACKGROUND: Metronidazole is an oral antibiotic which is widely used in the treatment of patients with Clostridium difficile associated disease. METHODS: This article describes the validation of a LC-MS/MS assay for the measurement of metronidazole in human faecal samples. RESULTS: Matrix matched and aqueous standards showed no significant difference in performance for the routine calibration of the assay. D(4) deuterated metronidazole internal standard eluted with a different retention time to the undeuterated metronidazole on chromatography, hence zidovudine was used as an internal standard...
December 5, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27932112/short-term-outcome-of-untreated-versus-treated-asymptomatic-bacteriuria-in-renal-transplant-patients
#20
N Arencibia, M L Agüera, C Rodelo, I López, M Sánchez-Agesta, A Hurtarte, M D Navarro, A Rodríguez-Benot
BACKGROUND: Infection of the urinary tract (UTI) is the most common form of bacterial infection in renal transplant patients, but its management is still controversial. We compared symptomatic and asymptomatic bacteriuria, treated or untreated, during two different months (summer or winter). METHODS: This longitudinal, prospective study involved routine urine cultures collected during September 2014 or March 2015. Demographic, clinical, and microbiological characteristics from the patients with positive urine cultures were described...
November 2016: Transplantation Proceedings
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