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https://www.readbyqxmd.com/read/29162115/opportunities-for-topical-antimicrobial-therapy-permeation-of-canine-skin-by-fusidic-acid
#1
Sian-Marie Frosini, Ross Bond, Anette Loeffler, Jo Larner
BACKGROUND: Staphylococcal infection of the canine epidermis and hair follicle is amongst the commonest reasons for antimicrobial prescribing in small animal veterinary practice. Topical therapy with fusidic acid (FA) is an attractive alternative to systemic therapy based on low minimum inhibitory concentrations (MICs, commonly <0.03 mg/l) documented in canine pathogenic staphylococci, including strains of MRSA and MRSP (methicillin-resistant Staphylococcus aureus and S. pseudintermedius)...
November 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29158519/biosynthesis-of-helvolic-acid-and-identification-of-an-unusual-c-4-demethylation-process-distinct-from-sterol-biosynthesis
#2
Jian-Ming Lv, Dan Hu, Hao Gao, Tetsuo Kushiro, Takayoshi Awakawa, Guo-Dong Chen, Chuan-Xi Wang, Ikuro Abe, Xin-Sheng Yao
Fusidane-type antibiotics represented by helvolic acid, fusidic acid and cephalosporin P1 are a class of bacteriostatic agents, which have drawn renewed attention because they have no cross-resistance to commonly used antibiotics. However, their biosynthesis is poorly understood. Here, we perform a stepwise introduction of the nine genes from the proposed gene cluster for helvolic acid into Aspergillus oryzae NSAR1, which enables us to isolate helvolic acid (~20 mg L(-1)) and its 21 derivatives. Anti-Staphylococcus aureus assay reveals that the antibacterial activity of three intermediates is even stronger than that of helvolic acid...
November 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/29131910/resistant-infantile-bacterial-conjunctivitis-in-egypt-a-microbiology-study
#3
Aiman Abdeltawwab Hashish, Molham Abdelhafez Elbakary, Waleed Abdelhady Allam
PURPOSE: To study the microbiological aspects of infantile bacterial conjunctivitis resistant to empirical topical antibiotic therapy in Egypt. METHODS: Ninety-two eyes of 86 infants with bacterial conjunctivitis were included in this prospective study. They all failed to show evidence of clinical improvement after 2 weeks of empirical topical antibiotic therapy. Conjunctival swabs were obtained from all patients for bacterial culture and antibiotic sensitivity testing...
November 11, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/29119029/rhabdomyolysis-induced-by-coadministration-of-fusidic-acid-and-atorvastatin-a-case-report-and-comprehensive-review-of-the-literature
#4
Dimitrios Patoulias, Theodoros Michailidis, Thomas Papatolios, Rafael Papadopoulos, Petros Keryttopoulos
Statins are among the most widely prescribed medications worldwide. Acute rhabdomyolysis constitutes a potentially life-threatening side effect regardless of whether statins are administered alone or in combination. The potentially fatal combination of a statin and fusidic acid has been well described in the literature. Acute renal failure can be a direct consequence of this drug-drug interaction. We present a case of a 79-year-old woman who presented to our Emergency Department with a one-week history of limb weakness, myalgia, and inability to stand and walk...
2017: Case Reports in Nephrology
https://www.readbyqxmd.com/read/29104696/ulcerated-metatypical-basal-cell-carcinoma-of-the-forehead
#5
Jose Cardoso, Uwe Wollina, Georgi Tchernev
An 81-year-old male presented with an ulcerated lesion on the frontal area. The lesion had started three years before with a small ulceration and was initially treated with a cream of betamethasone and fusidic acid twice daily for several months. The clinical impression was ulcerated basal cell carcinoma (BCC). The histopathological findings after surgical excision were consistent with metatypical or basosquamous carcinoma. The importance of metatypical and basosquamous carcinomas is their potential for a more aggressive behaviour than conventional BCC, both regarding local recurrences and metastatic disease...
October 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29075549/polymorphism-in-commercial-sources-of-fusidic-acid-a-comparative-study-of-the-in-vitro-release-characteristics-of-forms-i-and-iii-from-a-marketed-pharmaceutical-cream
#6
Jonathan Byrne, Robert Reinhardt, Trinidad Velasco-Torrijos
A comparison of the polymorphic forms of 3 commercial sources of fusidic acid using FTIR and XRPD techniques has been performed in this study. It has been demonstrated that polymorphic Forms I and III are currently available on the commercial market. The influence of the observed polymorphism on the stability of the drug substance in bulk form has been investigated through stability and stress testing according to current ICH guidelines. Significant differences were detected between commercial sources with regard to the stability of the bulk substance under photolytic and humidity stress conditions...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/29069878/the-effect-of-low-dose-nitroglycerin-ointment-on-skin-flap-necrosis-in-breast-reconstruction-after-skin-sparing-or-nipple-sparing-mastectomy
#7
Min Ho Yun, Eul Sik Yoon, Byung-Il Lee, Seung-Ha Park
BACKGROUND: Skin flap necrosis is a common complication after mastectomy and breast reconstruction. It has been proven that nitroglycerin ointment, as a topical vasodilator, can decrease the rate of skin flap necrosis after mastectomy and breast reconstruction. However, nitroglycerin can cause several side effects, including headache, dizziness, and hypotension. The purpose of this study was to evaluate whether the application of a low dose of nitroglycerin ointment reduced the rate of skin flap necrosis in breast reconstruction after skin-sparing or nipple-sparing mastectomy...
November 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/29063353/high-prevalence-and-antimicrobial-resistance-of-meca-staphylococcus-aureus-in-dairy-cattle-sheep-and-goat-bulk-tank-milk-in-jordan
#8
Mohammad M Obaidat, Alaa E Bani Salman, Amira A Roess
The aim of this study was to determine the prevalence and antimicrobial resistance of mecA and mecC methicillin-resistant Staphylococcus aureus (MRSA) in cattle, sheep, and goat dairy farms in Jordan. Milk samples were collected from bulk tanks at 117 dairy farms (44 cattle, 47 sheep, and 26 goat dairy farms) in each region of the country. MRSA were isolated on mecA and mecC chromogenic media and confirmed by PCR. The confirmed isolates were tested for resistance toward 15 antimicrobials by the disc diffusion method...
October 23, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29063318/method-of-selection-of-bacteria-antibiotic-resistance-genes-based-on-clustering-of-similar-nucleotide-sequences
#9
I S Balashov, V A Naumov, P I Borovikov, A B Gordeev, D V Dubodelov, L A Lyubasovskaya, Yu V Rodchenko, A A Bystritskii, N V Aleksandrova, D Yu Trofimov, T V Priputnevich
A new method for selection of bacterium antibiotic resistance genes is proposed and tested for solving the problems related to selection of primers for PCR assay. The method implies clustering of similar nucleotide sequences and selection of group primers for all genes of each cluster. Clustering of resistance genes for six groups of antibiotics (aminoglycosides, β-lactams, fluoroquinolones, glycopeptides, macrolides and lincosamides, and fusidic acid) was performed. The method was tested for 81 strains of bacteria of different genera isolated from patients (K...
October 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29027845/the-potent-mechanism-based-inactivation-of-cyp2d6-and-cyp3a4-with-fusidic-acid-in-in-vivo-bioaccumulation
#10
Xiu-Xian Lin, Guang-Hui Lian, Ying Xu, Qing Zhao, Jian Xiao, Shi-Fang Peng, Mei-Fang Xiao, Dong-Sheng Ouyang, Zhi-Rong Tan, Yi-Cheng Wang, Jing-Bo Peng, Wei Zhang, Yao Chen
1. The accumulation of fusidic acid (FA) after multiple doses of FA has been reported on in previous studies but the related mechanisms have not been clarified fully. In the present study, we explain the mechanisms related to the mechanism-based inactivation of CYP2D6 and CYP3A4. 2. The irreversible inhibitory effects of FA on CYP2D6 and CYP3A4 were examined via a series of experiments, including: a) time-, concentration- and NADPH-dependent inactivation, b) substrate protection in enzyme inactivation and c) partition ratio with recombinant human CYP enzymes...
October 13, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28977793/antibiotic-resistance-trends-in-methicillin-resistant-staphylococcus-aureus-isolated-in-kuwait-hospitals-2011-2015
#11
Edet Udo, Samar Boswihi
<br>The aim of this study was to determine antibiotic resistance trends and carriage of staphylococcal cassette chromosome mec (SCCmec) genetic elements in methicillin-resistant Staphylococcus aureus (MRSA) isolated in Kuwait hospitals to ascertain whether they were healthcare-associated (HA-MRSA) or community-associated (CA-MRSA). <br> Materials (Subjects) and Methods<br>In total 6,922 MRSA isolates obtained from different clinical samples were tested for resistance to antibiotics, urease production and carriage of SCCmec elements...
October 4, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28949803/enterotoxin-production-and-antimicrobial-susceptibility-in-staphylococci-isolated-from-traditional-raw-milk-cheeses-in-serbia
#12
Snezana Bulajic, Svetlana Colovic, Dusan Misic, Jasna Djordjevic, Radoslava Savic-Radovanovic, Jelena Asanin, Tijana Ledina
This study was undertaken to determine the prevalence of coagulase positive staphylococci (CPS) by examining a total of 71 raw milk cheeses. Additionally, enterotoxigenicity, antimicrobial susceptibility and the presence of mecA and mecC genes in the staphylococcal isolates were investigated. The isolation and enumeration procedure of CPS followed the International Organization for Standardization (ISO) standard. The presumptive staphylococci were identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) using the VITEK MS system...
September 26, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28938539/dissemination-of-macrolides-fusidic-acid-and-mupirocin-resistance-among-staphylococcus-aureus-clinical-isolates
#13
Xingmei Liu, Shanshan Deng, Jinwei Huang, Yaling Huang, Yu Zhang, Qin Yan, Yanhong Wang, Yanyue Li, Chengfu Sun, Xu Jia
As an increasingly common cause of skin infections worldwide, the prevalence of antibiotic-resistant Staphylococcus aureus (S. aureus) across China has not been well documented. This literature aims to study the resistance profile to commonly used antibiotics, including macrolides, fusidic acid (FA) and mupirocin, and its relationship to the genetic typing in 34 S. aureus strains, including 6 methicillin-resistant S. aureus (MRSA), isolated from a Chinese hospital. The MIC results showed 27 (79.4%), 1 (2.9%) and 6 (17...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28926634/nasal-and-pharyngeal-carriage-of-methicillin-resistant-staphylococcus-sciuri-among-hospitalised-patients-and-healthcare-workers-in-a-serbian-university-hospital
#14
Ivana Cirkovic, Jasmina Trajkovic, Tomasz Hauschild, Paal Skytt Andersen, Adebayo Shittu, Anders Rhod Larsen
There has been a paucity of data on methicillin-resistant Staphylococcus sciuri (MRSS) epidemiology in European healthcare settings. The aim of the study was to determine the prevalence of nasal and pharyngeal carriage and diversity of MRSS among inpatients and healthcare workers (HCWs) in the largest healthcare centre in Serbia, and to assess performance of different methods for MRSS screening. Nasal and pharyngeal swabs were obtained from 195 patients and 105 HCWs in different departments. Each swab was inoculated directly onto MRSA-ID, oxacillin-resistance screening agar and mannitol salt agar (MSA) with 2 mg/L of oxacillin...
2017: PloS One
https://www.readbyqxmd.com/read/28874811/effect-of-fusidic-acid-on-the-kinetics-of-molecular-motions-during-ef-g-induced-translocation-on-the-ribosome
#15
Riccardo Belardinelli, Marina V Rodnina
The translocation step of protein synthesis entails binding and dissociation of elongation factor G (EF-G), movements of the two tRNA molecules, and motions of the ribosomal subunits. The translocation step is targeted by many antibiotics. Fusidic acid (FA), an antibiotic that blocks EF-G on the ribosome, may also interfere with some of the ribosome rearrangements, but the exact timing of inhibition remains unclear. To follow in real-time the dynamics of the ribosome-tRNA-EF-G complex, we have developed a fluorescence toolbox which allows us to monitor the key molecular motions during translocation...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797802/antibiotic-susceptibilities-and-prevalence-of-methicillin-resistant-staphylococcus-aureus-mrsa-isolated-from-bovine-milk-in-pakistan
#16
Amjad Islam Aqib, Muhammad Ijaz, Aftab Ahmad Anjum, Muhammad Abdul Rauf Malik, Khalid Mehmood, Shahid Hussain Farooqi, Kashif Hussain
The study was designed to investigate bovine milk for prevalence of an emerging zoonotic pathogen Methicillin resistant Staphylococcus aureus (MRSA), and in-vitro therapeutic response of various antibiotics against MRSA. Nine hundred (900) milk samples were collected (half from cattle and half from buffalo) from private and public farms located in various tehsils of district Faisalabad, using the convenient sampling method. Milk samples were put to biochemical identification of Staphylococcus aureus and later oxacilline disk sensitivity testing for confirmation of MRSA...
December 2017: Acta Tropica
https://www.readbyqxmd.com/read/28759825/binding-free-energy-calculations-using-mmpb-gbsa-approaches-for-pamam-g4-drug-complexes-at-neutral-basic-and-acid-ph-conditions
#17
Alberto Martínez-Muñoz, Martiniano Bello, Aurelio Romero-Castro, Rolando Alberto Rodríguez-Fonseca, João Rodrigues, Víctor Armando Sánchez-Espinosa, José Correa-Basurto
Dendrimers are synthetic macromolecules with a highly-branched structure and high concentration of surface groups. Among dendrimers, Poly(amidoamine) (PAMAM) has received substantial attention as a novel drug carrier and delivery system. Depending on the generation and type of terminal groups, dendrimer toxicity could change and include cytotoxicity. Although PAMAM is water soluble, molecular modeling of the dendrimer-drug complex is considered challenging for exploring the conformational mobility of dendrimers and atomic specific interactions during the dendrimer-drug association...
July 19, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28746830/biophysical-characterization-of-e-coli-tolc-interaction-with-the-known-blocker-hexaamminecobalt
#18
A Gilardi, S P Bhamidimarri, M Brönstrup, U Bilitewski, R K R Marreddy, K M Pos, L Benier, P Gribbon, M Winterhalter, B Windshügel
BACKGROUND: The tripartite efflux pump AcrAB-TolC in E. coli is involved in drug resistance by transporting antibiotics out of the cell. The outer membrane protein TolC can be blocked by various cations, including hexaamminecobalt, thereby TolC represents a potential target for reducing antimicrobial resistance as its blockage may improve efficacy of antibiotics. METHODS: We utilized single channel electrophysiology measurements for studying TolC conductance in the absence and presence of the known TolC blocker hexaamminecobalt...
November 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28735049/in-vitro-activity-of-daptomycin-combinations-with-rifampicin-gentamicin-fosfomycin-and-fusidic-acid-against-mrsa-strains
#19
Gulseren Aktas, Sengul Derbentli
OBJECTIVES: Although new antimicrobial agents designed to treat infections with limited therapeutic options have been introduced in the past few years, resistant Gram positive cocci have continued to emerge and spread. Daptomycin is a cyclic lipopeptide antibiotic that has rapid bactericidal activity against broad spectrum of Gram positive bacteria, including methicillin resistant Staphylococcus aureus (MRSA). Antibiotics are sometimes used in combination in an attempt to prevent or delay the in vivo emergence of drug-resistant subpopulations of pathogenic organisms...
September 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729209/clonal-spread-of-methicillin-resistant-staphylococcus-aureus-t6065-cc5-sccmecv-agrii-in-a-libyan-hospital
#20
Monia Khemiri, Ali Akrout Alhusain, Mohamed Salah Abbassi, Houyem El Ghaieb, Sofia Santos Costa, Adriana Belas, Constança Pomba, Salah Hammami
OBJECTIVES: The aim of this study was to characterize 32 MRSA isolates recovered from wound specimens of patients in a Hospital in Tripoli, Libya, during 2013. METHODS: MRSA isolates were characterized by determining their antibiotic susceptibilities, genes encoding antibiotic resistance and virulence factors, the SCCmec class, agr type, spa typing, PFGE and MLST. RESULTS: PFGE and MLST revealed that all isolates were clonal and belonged to the Clonal Complex 5 (CC5)...
September 2017: Journal of Global Antimicrobial Resistance
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