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https://www.readbyqxmd.com/read/28944509/diagnosis-and-treatment-of-patients-with-prostatic-abscess-in-the-post-antibiotic-era
#1
REVIEW
Anne Lenore Ackerman, Pooja S Parameshwar, Jennifer T Anger
We reviewed the pathogenesis, clinical presentation, treatment options and outcomes of prostatic abscess in the post-antibiotic era, focusing on how patient risk factors and the emergence of multidrug-resistant organisms influence management of the condition. A MEDLINE search for "prostate abscess" or "prostatic abscess" was carried out. Prostate abscess is no longer considered a consequence of untreated urinary infection; now, men with prostatic abscess are typically debilitated or immunologically compromised, with >50% of patients having diabetes...
September 24, 2017: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/28944379/septic-arthritis-of-the-temporomandibular-joint-after-acute-otitis-media-in-a-child
#2
Kathia Dubron, Jan Meeus, Koenraad Grisar, Stefanie Desmet, Titiaan Dormaar, Yannick Spaey, Constantinus Politis
Septic arthritis of the temporomandibular joint as a complication of acute otitis media is rare in the Western world. This report describes the case of a 7-year-old boy who had pain in his right ear and limited mouth opening, following the onset of acute otitis media. A contrast-enhanced computed tomography scan revealed right-sided mastoiditis and hydrops of the right temporomandibular joint, suggesting septic arthritis. Real-time PCR and microbiologic analysis identified Streptococcus pyogenes and Staphylococcus epidermidis in the joint aspirate...
September 22, 2017: Quintessence International
https://www.readbyqxmd.com/read/28943993/effectiveness-of-a-glycylcycline-antibiotic-for-reducing-the-pathogenicity-of-superantigen-producing-methicillin-resistant-staphylococcus-aureus-in-burn-wounds
#3
Lauren B Nosanov, Daniel Y Jo, Pranay R Randad, Lauren T Moffatt, Bonnie C Carney, Rachel T Ortiz, Jeffrey W Shupp
Objective: Burn-injured patients are highly susceptible to infectious complications, which are often associated with increased morbidity and mortality. Rates of antibiotic resistance have increased, and resistant species such as methicillin-resistant Staphylococcus aureus provide additional challenges in the form of virulence factors. Proteins can disrupt local healing, leading to systemic immune disruption. To optimize outcomes, treatments that reduce pathogenicity must be identified. This study aims to compare a glycylcycline antibiotic-tigecycline-with clindamycin for effectiveness in treating superantigenic methicillin-resistant Staphylococcus aureus in burn wounds...
2017: Eplasty
https://www.readbyqxmd.com/read/28943862/the-chemical-and-antibacterial-evaluation-of-st-john-s-wort-oil-macerates-used-in-kosovar-traditional-medicine
#4
James T Lyles, Austin Kim, Kate Nelson, Angelle L Bullard-Roberts, Avni Hajdari, Behxhet Mustafa, Cassandra L Quave
Hypericum perforatum L. (Hypericaceae), or St. John's Wort, is a well-known medicinal herb often associated with the treatment of anxiety and depression. Additionally, an oil macerate (Oleum Hyperici) of its flowering aerial parts is widely used in traditional medicine across the Balkans as a topical wound and ulcer salve. Other studies have shown that Oleum Hyperici reduces both wound size and healing time. Of its active constituents, the naphthodianthrone hypericin and phloroglucinol hyperforin are effective antibacterial compounds against various Gram-positive bacteria...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28943826/the-use-of-daptomycin-to-treat-methicillin-resistant-staphylococcus-epidermidis-bacteremia-in-a-critically-ill-child-with-renal-failure
#5
Stephen Morris, Kate Gould, Lee P Ferguson
Daptomycin is excreted primarily unchanged by the kidney. Dosage regimens in children with renal failure remain to be determined. We report the case of an 8-year-old child with multiorgan failure undergoing continuous peritoneal dialysis, successfully treated with intravenous daptomycin for methicillin-resistant Staphylococcus epidermidis bacteremia. A dosage of 8 mg/kg every 48 hour was used. Plasma peak and trough concentrations of daptomycin were 68 mg/L and 14.6 mg/L, respectively, on day 6 of treatment...
July 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/28943762/evaluation-on-antimicrobial-activity-of-psoraleae-semen-extract-controlling-the-growth-of-gram-positive-bacteria
#6
Sejeong Kim, Soomin Lee, Heeyoung Lee, Jimyeong Ha, Jeeyeon Lee, Yukyung Choi, Hyemin Oh, Joonbae Hong, Yohan Yoon, Kyoung-Hee Choi
This study investigated bacterial growth-inhibitory effect of 69 therapeutic herbal plants extracts on 9 bacterial strains using a disc diffusion assay. Especially, the antimicrobial activity of Psoraleae semen, which showed different activity on pathogenic Gram-positive and Gram-negative bacteria, was evaluated by MIC (minimal inhibition concentration) and biofilm formation assay. The effect of Psoraleae semen extract on bacterial cell membranes was examined by measurement of protein leakage (optical density at 280 nm) and scanning electron microscope (SEM)...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28943633/vancomycin-induced-leukocytoclastic-vasculitis-and-acute-renal-failure-due-to-tubulointerstitial-nephritis
#7
Chandra Shekar Pingili, Emmanuel E Okon
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia and sepsis are commonly treated with intravenous vancomycin. However, vancomycin treatment is associated adverse reactions, including skin rashes and nephrotoxicity. We present a case of acute renal failure due to acute tubulointerstitial nephritis associated with a diffuse leukocytoclastic vasculitic skin eruption following intravenous vancomycin treatment. CASE REPORT A 79-year-old Caucasian male patient was treated with intravenous vancomycin for MRSA bacteremia...
September 25, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28943525/synergists-from-portulaca-oleracea-with-macrolides-against-methicillin-resistant-staphylococcus-aureus-and-related-mechanism
#8
K P Fung, Q B Han, M Ip, X S Yang, C Bs Lau, B Cl Chan
No abstract text is available yet for this article.
August 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28943524/sonodynamic-bactericidal-efficacy-of-hypocrellin-a-and-b-against-methicillin-resistant-staphylococcus-aureus
#9
A Wn Leung, M Ip, C S Xu, X N Wang, P T Yung, H Y Hua
No abstract text is available yet for this article.
August 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28943329/dietary-manganese-promotes-staphylococcal-infection-of-the-heart
#10
Lillian J Juttukonda, Evelien T M Berends, Joseph P Zackular, Jessica L Moore, Matthew T Stier, Yaofang Zhang, Jonathan E Schmitz, William N Beavers, Christiaan D Wijers, Benjamin A Gilston, Thomas E Kehl-Fie, James Atkinson, Mary K Washington, R Stokes Peebles, Walter J Chazin, Victor J Torres, Richard M Caprioli, Eric P Skaar
Diet, and specifically dietary metals, can modify the risk of infection. However, the mechanisms by which manganese (Mn), a common dietary supplement, alters infection remain unexplored. We report that dietary Mn levels dictate the outcome of systemic infections caused by Staphylococcus aureus, a leading cause of bacterial endocarditis. Mice fed a high Mn diet display alterations in Mn levels and localization within infected tissues, and S. aureus virulence and infection of the heart are enhanced. Although the canonical mammalian Mn-sequestering protein calprotectin surrounds staphylococcal heart abscesses, calprotectin is not released into the abscess nidus and does not limit Mn in this organ...
September 20, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28943328/o-acetylation-of-peptidoglycan-limits-helper-t-cell-priming-and-permits-staphylococcus-aureus-reinfection
#11
Marisel Sanchez, Stacey L Kolar, Sabrina Müller, Christopher N Reyes, Andrea J Wolf, Chihiro Ogawa, Rajat Singhania, Daniel D De Carvalho, Moshe Arditi, David M Underhill, Gislâine A Martins, George Y Liu
Humans do not usually develop effective immunity to Staphylococcus aureus reinfection. Using a murine model that mimics human infection, we show that lack of protective immunity to S. aureus systemic reinfection is associated with robust interleukin-10 (IL-10) production and impaired protective Th17 responses. In dendritic cell co-culture assays, priming with S. aureus promotes robust T cell proliferation, but limits Th cells polarization and production of IL-1β and other cytokines important for Th1 and Th17 differentiation...
September 20, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28943204/considerations-for-antibiotic-prophylaxis-in-head-and-neck-cancer-surgery
#12
Michael P Veve, Susan L Davis, Amy M Williams, John E McKinnon, Tamer A Ghanem
Peri/post-operative antibiotic prophylaxis (POABP) has become standard practice for preventing surgical site infections (SSI) in head and neck cancer patients undergoing microvascular reconstruction, but few data exist on optimal POABP regimens. Current surgical prophylaxis guideline recommendations fail to account for the complexity of microvascular reconstruction relative to other head and neck procedures, specifically regarding wound classification and antibiotic duration. Selection of POABP spectrum is also controversial, and must balance the choice between too narrow, risking subsequent infection, or too broad, and possible unwanted effects (e...
September 21, 2017: Oral Oncology
https://www.readbyqxmd.com/read/28943172/staphylococcus-lugdunensis-small-colony-variant-conversion-resulting-in-chronic-prosthetic-joint-infection
#13
X Argemi, S Dahyot, J Lebeurre, Y Hansmann, C Ronde Oustau, G Prévost
No abstract text is available yet for this article.
September 21, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28943153/melittin-and-its-potential-in-the-destruction-and-inhibition-of-the-biofilm-formation-by-staphylococcus-aureus-escherichia-coli-and-pseudomonas-aeruginosa-isolated-from-bovine-milk
#14
Tony Picoli, Cristina Mendes Peter, João Luíz Zani, Stefanie Bressan Waller, Matheus Gomes Lopes, Kamilla Neutzling Boesche, Gilberto D Ávila Vargas, Silvia de Oliveira Hübner, Geferson Fischer
Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa stand out in veterinary and human medicine for their role in opportunistic infections and their pathogenic mechanisms, including the biofilms formation. It was investigated the antibacterial activity of melittin and antibiofilm of such bacteria. Twelve strains of these microorganisms isolated from bovine milk were used, as well as the strains S. aureus ATCC 12600, E. coli ATCC 8739 and Pseudomonas aeruginosa ATCC 15442. The minimum inhibitory concentrations (MIC) and minimum bactericidal concentration (MBC) were determined by broth microdilution technique...
September 21, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28943148/in-vivo-safety-evaluation-of-antibacterial-silver-chloride-nanoparticles-from-streptomyces-exfoliatus-icn25-in-zebrafish-embryos
#15
Appadurai Muthamil Iniyan, Rajaretinam Rajesh Kannan, Francis-Joseph Rosemary Sharmila Joseph, Thankaraj Rajam Jabila Mary, Mani Rajasekar, Puthenpurayil Chellappan Sumy, Arul Maximus Rabel, Dasnamoorthy Ramachandran, Samuel Gnana Prakash Vincent
Silver chloride nanoparticles were synthesized from the cell-free culture supernatant of Streptomyces strain using green synthesis approach with good yield. The nanoparticles were characterized by UV-Vis, IR, SEM, AFM and XRD techniques. These nanoparticles exhibited broad spectrum of antibacterial activity towards Methicillin-resistant Staphylococcus aureus, Methicillin sensitive S. aureus, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumonia at ≤ 2 μg/ml minimal inhibitory concentrations...
September 21, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28942840/apoptosis-induced-by-staphylococcus-aureus-toxins
#16
REVIEW
Xiaopeng Zhang, Xiaomei Hu, Xiancai Rao
Apoptosis stimulated by bacterial toxins is common during infection and is now considered important in disease processes. As a major human pathogen, Staphylococcus aureus also causes apoptosis during infection. In some diseases such as atopic dermatitis and sepsis, the apoptosis induced by S. aureus influences the severity and outcome of diseases. S. aureus has various toxins, many of which have reportedly triggered apoptosis. In this review, we focused on the apoptosis-inducing toxins secreted by S. aureus, and their underlying mechanisms...
December 2017: Microbiological Research
https://www.readbyqxmd.com/read/28942832/chemical-composition-antioxidant-and-antibacterial-activity-of-essential-oils-from-etlingera-sayapensis-a-d-poulsen-ibrahim
#17
Behnam Mahdavi, Wan A Yaacob, Laily B Din
OBJECTIVE: To report the chemical composition and bioactivity (including antioxidant and antimicrobial activity) of essential oils from the rhizomes, stems, and leaves of Etlingera sayapensis (E. sayapensis) A.D. Poulsen & Ibrahim for the first time. METHODS: First, the essential oils were obtained using a Clevenger-type apparatus. Then, the essential oils compositions were identified by chromatography methods including GC-FID and GC-MS. For the next step, DPPH radical scavenging activity (RSA), β-carotene bleaching (BCB), and ferrous ion chelating ability (FIC) were chosen to evaluate the essential oils antioxidant activity...
August 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28942758/identification-and-heterologous-expression-of-the-kocurin-biosynthetic-gene-cluster
#18
Luis Linares-Otoya, Virginia Linares-Otoya, Lizbeth Armas-Mantilla, Cyntia Blanco-Olano, Max Crüsemann, Mayar L Ganoza-Yupanqui, Julio Campos-Florian, Gabriele M König, Till F Schäberle
The antibiotically bioactive thiopeptide compound kocurin was identified in extracts from a newly isolated Kocuria rosea strain. The axenic strain was retrieved from a soil sample of the intertidal area at the Paracas National Park, Peru. The genetic basis of this promising natural product with activity against methicillin-resistant Staphylococcus aureus (MRSA) strains was revealed by comparative genome analysis of this new isolate and other reported thiopeptide producer strains. The functionality of the predicted gene locus was experimentally proven by heterologous expression in Streptomyces coelicolor M1146...
September 25, 2017: Microbiology
https://www.readbyqxmd.com/read/28942757/enterococcus-faecalis-and-pathogenic-streptococci-inactivate-daptomycin-by-releasing-phospholipids
#19
Elizabeth V K Ledger, Vera Pader, Andrew M Edwards
Daptomycin is a lipopeptide antibiotic with activity against Gram-positive bacteria. We showed previously that Staphylococcus aureus can survive daptomycin exposure by releasing membrane phospholipids that inactivate the antibiotic. To determine whether other pathogens possess this defence mechanism, phospholipid release and daptomycin activity were measured after incubation of Staphylococcus epidermidis, group A or B streptococci, Streptococcus gordonii or Enterococcus faecalis with the antibiotic. All bacteria released phospholipids in response to daptomycin, which resulted in at least partial inactivation of the antibiotic...
September 25, 2017: Microbiology
https://www.readbyqxmd.com/read/28942642/experimental-evolution-of-diverse-strains-as-a-method-for-the-determination-of-biochemical-mechanisms-of-action-for-novel-pyrrolizidinone-antibiotics
#20
Kathryn Beabout, Megan D McCurry, Heer Mehta, Akshay Ashok Shah, Kiran Kumar Pulukuri, Stephan Rigol, Yanping Wang, K C Nicolaou, Yousif Shamoo
The continuing rise of multi-drug resistant pathogens has made it clear that in the absence of new antibiotics we are moving toward a 'post-antibiotic' world, in which even routine infections will become increasingly untreatable. There is a clear need for the development of new antibiotics with truly novel mechanisms of action to combat multi-drug resistant pathogens. Experimental evolution to resistance can be a useful tactic for the characterization of the biochemical mechanism of action for antibiotics of interest...
September 23, 2017: ACS Infectious Diseases
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