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Optimizing antibiotic

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https://www.readbyqxmd.com/read/28071947/presacral-abscess-as-a-rare-complication-of-sacral-nerve-stimulator-implantation
#1
A Gumber, S Ayyar, H Varia, S Pettit
A 50-year-old man with intractable anal pain attributed to proctalgia fugax underwent insertion of a sacral nerve stimulator via the right S3 vertebral foramen for pain control with good symptomatic relief. Thirteen months later, he presented with signs of sepsis. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a large presacral abscess. MRI demonstrated increased enhancement along the pathway of the stimulator electrode, indicating that the abscess was caused by infection introduced at the time of sacral nerve stimulator placement...
January 10, 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28069659/mrsa-strains-carrying-the-novel-mecc-gene-full-genome-sequencing-identifies-in-the-genetic-background-several-determinants-that-modulate-the-resistant-phenotype
#2
Catarina Milheiriço, Hermínia de Lencastre, Alexander Tomasz
Most MRSA strains are resistant to beta-lactam antibiotics due to the presence of the mecA gene encoding an extra penicillin-binding protein (PBP2A) that has low affinity to virtually all beta-lactam antibiotics. Recently, a new resistance determinant - the mecC gene - was identified in S. aureus isolates recovered from humans and dairy cattle. Although having typically low MICs to beta-lactam antibiotics, MRSA strains with the mecC determinant are also capable of expressing high levels of oxacillin resistance when in an optimal genetic background...
January 9, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28067676/severe-community-acquired-pneumonia-optimal-management
#3
Davide Leoni, Jordi Rello
PURPOSE OF REVIEW: Community-acquired pneumonia (CAP) is the leading cause of mortality among infectious diseases. Several efforts have been implemented to achieve better outcomes, but an important proportion of patients continue dying. This review focuses on the newest research on prognostic factors and diagnostics, opening new perspectives in the management of CAP. RECENT FINDINGS: CAP survival improved in recent years despite an increasing incidence of severe presentations...
January 6, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28067569/optimizing-postoperative-handover-to-the-intensive-care-unit-at-a-tertiary-centre
#4
Shankar Kumar, Andrew R McKean, Andrew Ramwell, Carolyn Johnston, Susannah Leaver
BACKGROUND: Comprehensive handover of patients transferred from operating theatre to the intensive care unit is crucial in ensuring ongoing quality and safety of care. Handover in this setting poses unique challenges, yet few studies have considered or tested approaches to improve the process. A quality improvement project was undertaken to assess and improve the quality of information transfer during the handover of postoperative patients to the general intensive care unit at a tertiary centre...
January 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/28065867/cloning-expression-purification-and-biophysical-analysis-of-two-putative-halogenases-from-the-glycopeptide-a47-934-gene-cluster-of-streptomyces-toyocaensis
#5
Tabata P Cardoso, Larissa A de Sá, Priscila Dos S Bury, Sair M Chavez-Pacheco, Marcio V B Dias
Glycopeptides are an important class of antibiotics used in the treatment of several infections, including those caused by methicillin resistant Staphylococcus aureus. Glycopeptides are biosynthesized by a Non Ribosomal Peptide Synthase (NRPS) and the resulting peptide precursors are decorated by several tailoring enzymes, such as halogenases and glycosyltransferases. These enzymes are important targets of protein engineering to produce new derivatives of known antibiotics. Herein we show the production of two putative halogenases, denominated StaI and StaK, involved in the biosynthesis of the glycopeptide A47,934 in Streptomyces toyocaensis NRRL 15,009...
January 5, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28063544/the-prevention-of-early-onset-neonatal-group-b-streptococcal-disease
#6
Deborah Money, Victoria M Allen
OBJECTIVE: To review the evidence in the literature and to provide recommendations on the management of pregnant women in labour for the prevention of early-onset neonatal group B streptococcal disease. The key revisions in this updated guideline include changed recommendations for regimens for antibiotic prophylaxis, susceptibility testing, and management of women with pre-labour rupture of membranes. OUTCOMES: Maternal outcomes evaluated included exposure to antibiotics in pregnancy and labour and complications related to antibiotic use...
December 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28061685/innovative-approaches-to-improve-anti-infective-vaccine-efficacy
#7
Michael R Yeaman, John P Hennessey
Safe and efficacious vaccines are arguably the most successful medical interventions of all time. Yet the ongoing discovery of new pathogens, along with emergence of antibiotic-resistant pathogens and a burgeoning population at risk of such infections, imposes unprecedented public health challenges. To meet these challenges, innovative strategies to discover and develop new or improved anti-infective vaccines are necessary. These approaches must intersect the most meaningful insights into protective immunity and advanced technologies with capabilities to deliver immunogens for optimal immune protection...
January 6, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/28060813/using-chemical-reaction-kinetics-to-predict-optimal-antibiotic-treatment-strategies
#8
Pia Abel Zur Wiesch, Fabrizio Clarelli, Ted Cohen
Identifying optimal dosing of antibiotics has proven challenging-some antibiotics are most effective when they are administered periodically at high doses, while others work best when minimizing concentration fluctuations. Mechanistic explanations for why antibiotics differ in their optimal dosing are lacking, limiting our ability to predict optimal therapy and leading to long and costly experiments. We use mathematical models that describe both bacterial growth and intracellular antibiotic-target binding to investigate the effects of fluctuating antibiotic concentrations on individual bacterial cells and bacterial populations...
January 6, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28055177/effect-of-genomic-integration-location-on-heterologous-protein-expression-and-metabolic-engineering-in-e-coli
#9
Jacob A Englaender, John Andrew Jones, Brady F Cress, Thomas E Kuhlman, Robert J Linhardt, Mattheos A G Koffas
Chromosomal integration offers a selection-free alternative to DNA plasmids for expression of foreign proteins and metabolic pathways. Episomal plasmid DNA is convenient but has drawbacks including increased metabolic burden and the requirement for selection in the form of antibiotics. E. coli has long been used for the expression of foreign proteins and for the production of valuable metabolites by expression of complete metabolic pathways. The gene encoding the fluorescent reporter protein mCherry was integrated into four genomic loci on the E...
January 5, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28054670/ultra-sensitive-detection-of-kanamycin-for-food-safety-using-a-reduced-graphene-oxide-based-fluorescent-aptasensor
#10
Na-Reum Ha, In-Pil Jung, Im-Joung La, Ho-Sup Jung, Moon-Young Yoon
Overuse of antibiotics has caused serious problems, such as appearance of super bacteria, whose accumulation in the human body through the food chain is a concern. Kanamycin is a common antibiotic used to treat diverse infections; however, residual kanamycin can cause many side effects in humans. Thus, development of an ultra-sensitive, precise, and simple detection system for residual kanamycin in food products is urgently needed for food safety. In this study, we identified kanamycin-binding aptamers via a new screening method, and truncated variants were analyzed for optimization of the minimal sequence required for target binding...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28052623/prevention-and-treatment-of-variceal-haemorrhage-in-2017
#11
REVIEW
Felix Brunner, Annalisa Berzigotti, Jaime Bosch
Variceal haemorrhage is a major complication of portal hypertension that still causes high mortality in patients with cirrhosis. Improved knowledge of the pathophysiology of portal hypertension has recently led to a more comprehensive approach to prevent all the complications of this condition. Thus, optimal treatment of portal hypertension requires a strategy that takes into account the clinical stage of the disease and all the major variables that affect the risk of progression to the next stage and death...
January 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28050668/antibiotics-may-be-safely-discontinued-within-one-week-of-percutaneous-cholecystostomy
#12
Tyler J Loftus, Scott C Brakenridge, Camille G Dessaigne, George A Sarosi, William J Zingarelli, Frederick A Moore, Janeen R Jordan, Chasen A Croft, R Stephen Smith, Phillip A Efron, Alicia M Mohr
BACKGROUND: For patients with acute cholecystitis managed with percutaneous cholecystostomy (PC), the optimal duration of post-procedural antibiotic therapy is unknown. Our objective was to compare short versus long courses of antibiotics with the hypothesis that patients with persistent signs of systemic inflammation 72 h following PC would receive prolonged antibiotic therapy and that antibiotic duration would not affect outcomes. METHODS: We performed a retrospective cohort analysis of 81 patients who underwent PC for acute cholecystitis at two hospitals during a 41-month period ending November 2014...
January 3, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28043367/effectiveness-of-intrauterine-treatment-with-cephapirin-in-dairy-cows-with-purulent-vaginal-discharge
#13
N Tison, E Bouchard, L DesCôteaux, R C Lefebvre
The objective of this study was to assess the efficacy of cephapirin intrauterine treatment preceding a timed artificial insemination protocol in lactating dairy cows with purulent vaginal discharges (PVDs). Holstein dairy cows (n = 1247) from 18 herds were enrolled in a controlled randomized clinical trial. At 34 days in milk (DIM; ±7 days), cows had a genital examination (transrectal palpation, vaginoscopy, and uterine bacteriology). They were randomly assigned to either the control group (CONT, no treatment) or the treatment group (CEPH) consisting of 1 intrauterine infusion of 500-mg cephapirin benzathine (RCL) (Metricure, Merck Animal Health, Montreal, Canada) regardless of the uterine health status...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28042926/the-potential-impact-of-gut-microbiota-on-your-health-current-status-and-future-challenges
#14
Stitaya Sirisinha
Our health and probably also our behaviors and mood depend not only on what we eat or what we do (lifestyle behaviors), but also on what we host. It is well established for decades that all vertebrates including humans are colonized by a wide array of bacteria, fungi, eukaryotic parasites and viruses, and that, at steady state (homeostasis), this community of microbes establishes a friendly mutual relationship with the host. The term microbiota was originally meant to represent an ecological community of commensals and potentially pathogenic microbes that live within our bodies, but it is now used interchangeably with the term microbiome which was initially meant to represent a collective genome of the microbiota...
December 2016: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28042687/unsupervised-network-mapping-of-commercially-available-immunoassay-yields-three-distinct-chronic-rhinosinusitis-endotypes
#15
Rohit Divekar, Matthew Rank, Diane Squillace, Hirohito Kita, Devyani Lal
BACKGROUND: Endotyping chronic rhinosinusitis (CRS) through simplified cytokine assays may help direct individualized therapy such as corticosteroids, antibiotics, or biologics. We performed an unsupervised network analysis to endotype CRS and control subjects using a commercially available cytokine-chemokine immunoassay. METHODS: A 41-plex cytokine-chemokine array along with major basic protein (MBP) assay was performed on sinonasal surgical tissue of 32 adults...
January 2, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28039274/population-based-meta-analysis-of-roxithromycin-pharmacokinetics-dosing-implications-of-saturable-absorption-and-protein-binding
#16
Michael J Dolton, David Z D'Argenio
OBJECTIVES: The macrolide antibiotic roxithromycin has seen widespread clinical use for several decades; however, no population pharmacokinetic analysis has been published. Early studies indicated saturation of protein binding and absorption at doses within the approved range, which may impact pharmacodynamic target attainment since regimens of 150 mg twice daily and 300 mg once daily are used interchangeably in clinical practice. This study aimed to develop a population-based meta-analysis of roxithromycin pharmacokinetics, and utilize this model to inform optimal dosing regimens...
December 30, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28038931/safety-of-same-day-pegfilgrastim-administration-in-metastatic-castration-resistant-prostate-cancer-treated-with-cabazitaxel-with-or-without-carboplatin
#17
Mehmet Asim Bilen, Diana H Cauley, Bradley J Atkinson, Hsiang-Chun Chen, Diana H Kaya, Xuemei Wang, Raghu Vikram, Shi-Ming Tu, Paul G Corn, Jeri Kim
INTRODUCTION: Although myeloid growth factors are commonly used to treat metastatic castration-resistant prostate cancer (mCRPC), the optimal timing of administration has not been well studied. We assessed the effects of same-day pegfilgrastim, a neutrophil stimulator, after cabazitaxel treatment with or without carboplatin in patients with mCRPC. We also evaluated the frequency of urinary tract inflammation during treatment. PATIENTS AND METHODS: Between September 2010 and September 2014, 151 consecutive patients with mCRPC underwent cabazitaxel treatment with or without the addition of carboplatin at a single institution...
December 13, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28034519/treatment-outcomes-in-infections-caused-by-spice-serratia-pseudomonas-indole-positive-proteus-citrobacter-and-enterobacter-organisms-carbapenem-versus-noncarbapenem-regimens
#18
Stanley Moy, Roopali Sharma
PURPOSE: Techniques used to identify AmpC β-lactamases in SPICE (Serratia, Pseudomonas, indole-positive Proteus, Citrobacter, and Enterobacter) organisms are not yet optimized for the clinical laboratory and are not routinely used. Clinicians are often left with an uncertainty on the choice of antibiotic when a SPICE organism is isolated. The purpose of this study was to evaluate the outcomes of carbapenem versus noncarbapenem regimens in treating bacteremia or urinary tract infection from a SPICE organism in clinical practice...
December 26, 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/28033143/probiotics-for-trauma-patients-should-we-be-taking-a-precautionary-approach
#19
Heather A Vitko, L Kathleen Sekula, Martin A Schreiber
The use of probiotics in the hospital setting is largely understudied and highly controversial. Probiotics are living organisms that, when taken internally, can produce an immunomodulating effect and improve the gastrointestinal (GI) mucosal barrier. Although used for centuries by healthy individuals for GI health, their use in the hospital setting is now gaining wide attention for the prevention of infectious complications such as antibiotic-associated diarrhea, Clostridium difficile infections, multiple-organ dysfunction syndrome, and ventilator-associated pneumonia...
January 2017: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
https://www.readbyqxmd.com/read/28032485/clinical-and-therapeutic-implications-of-aeromonas-bacteremia-14-years-nation-wide-experiences-in-korea
#20
Ji Young Rhee, Dong Sik Jung, Kyong Ran Peck
BACKGROUND: To elucidate the clinical presentation, antimicrobial susceptibility, and prognostic factors of monomicrobial Aeromonas bacteremia in order to determine the most effective optimal therapy. MATERIALS AND METHODS: We reviewed the medical records of Aeromonas bacteremia patients for the period January 2000 to December 2013 in a retrospective multi-center study. RESULTS: A total of 336 patient records were reviewed, with 242 having community-acquired bacteremia...
December 2016: Infection & Chemotherapy
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