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https://www.readbyqxmd.com/read/29348101/effects-of-gamma-irradiation-on-the-physico-chemical-and-biological-properties-of-levofloxacin
#1
Saleem Raza, Yousaf Iqbal, Ihsan Ullah, Mohammad S Mubarak, Muhammad Usman Hameed, Muslim Raza
The aim of the present study was to examine the effect of gamma radiation on levofloxacin. Powder form of levofloxacin was subjected to different radiation doses (25, 50, 75, 100 and 125kGy) of Cobalt-60 source in a Gammacell-220 at a rate of 8.5 Gray/hr. The effect of radiation has been investigated with the aid of different spectroscopic techniques (UV-Vis, FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and by antibacterial activities. UV data did not reveal significant changes in the structure of levofloxacin which is supported by scanning electron microscopy...
January 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29338693/in-vitro-antimicrobial-susceptibility-testing-of-human-brucella-melitensis-isolates-from-ulanqab-of-inner-mongolia-china
#2
Zhi-Guo Liu, Dong-Dong Di, Miao Wang, Ri-Hong Liu, Hong-Yan Zhao, Dong-Ri Piao, Zhong-Zhi Zhao, Yong-Qing Hao, Ya-Nan Du, Hai Jiang, Bu-Yun Cui, Xian-Zhu Xia
BACKGROUND: Brucellosis is an endemic disease in the Inner Mongolia Autonomous Region of China and Ulanqab exhibits the highest prevalence of brucellosis in this region. Due to the complex nature of Brucellosis, a cure for this disease has proven to be elusive. Furthermore, the reduced susceptibility of Brucella spp. to antimicrobial agents has been reported as a potential cause of therapeutic failure. However, detailed in vitro antimicrobial susceptibility patterns pertaining to Brucella isolates from this region have not yet been published...
January 16, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29334532/cost-effectiveness-and-improved-parent-and-provider-satisfaction-with-outpatient-management-of-pediatric-oncology-patients-with-low-risk-fever-and-neutropenia
#3
Abhishek Bavle, Amanda Grimes, Sibo Zhao, Daniel Zinn, Andrea Jackson, Binita Patel, Timothy Porea, Ankhi Dutta, Heidi Russell, Andras Heczey
On the basis of significant evidence for safety, the international pediatric fever and neutropenia committee recommends the identification and management of patients with "low-risk fever and neutropenia" (LRFN), outpatient with oral antibiotics, instead of traditional inpatient management. The aim of our study was to compare the cost-per-patient with these 2 strategies, and to evaluate parent and provider satisfaction with the outpatient management of LRFN. Between March 2016 and February 2017, 17 LRFN patients (median absolute neutrophil count, 90/μL) were managed at a single institution, per new guidelines...
January 12, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29330817/effect-of-levofloxacin-pazufloxacin-enrofloxacin-and-meloxicam-on-the-immunolocalization-of-abcg-2-transporter-protein-in-rabbit-retina
#4
Adil Mehraj Khan, Satyavan Rampal, Naresh Kumar Sood
Adenosine triphosphate-binding cassette (ABC) sub-family G member-2 (ABCG-2) is a transporter protein, implicated for multi-drug efflux from tissues. This study evaluated the effect of fluoroquinolones; levofloxacin, pazufloxacin and enrofloxacin, and non-steroidal anti-inflammatory drug, meloxicam; on the immunolocalization of ABCG-2 transporter protein of rabbit retinas. Thirty-two male rabbits were randomly divided in to eight groups. Control group was gavaged, 2% benzyl alcohol in 5% dextrose since these chemicals are excipients of the drug preparations used in the treatment groups of this study...
January 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29327820/gastroenterology-today-between-certainties-and-news-a-meeting-held-in-turin-on-may-27-2017
#5
Rinaldo Pellicano, Davide G Ribaldone, Marco Astegiano, Luca Dughera, Edda Battaglia, Anna Morgando, Arrigo Arrigoni, Mauro Spandre, Mario Grassini, Giorgio M Saracco, Francis Mégraud
This special article reports on two crucial issues discussed during a meeting. The first was the updated management of Helicobacter pylori infection. This was approached taking into account the recent European Guidelines, with a focus on novelties in treatment. In particular, considering the increasing H. pylori antibiotic resistance to clarithromycin, in countries with a high clarithromycin resistance rate the bismuth-containing quadruple therapies should be preferred. The new formulation, with bismuth, metronidazole, and tetracycline contained in a single capsule (three-in-one), has shown exciting results both in naive and in non-responder patients...
January 10, 2018: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/29327523/association-of-physicians-of-india-position-statement-on-role-of-chirally-pure-molecules-in-clinical-practice
#6
Milind Y Nadkar, Mangesh Tiwaskar, Sanjay Kalra, Siddharth N Shah, B R Bansode, Anjanlal Dutta, Sarita Bajaj, Sameer Aggarwal, Yatan Pal Singh Balhara, A K Das, Puneet Dhamija, Y K Gupta, Jubbin Jacob, Sundeep Mishra, S N Narasingan, C K Ponde, Ram Prabhoo, Balakrishnan S, Manisha Sahay, R K Sahay, I Sathyamurthy, Shilpa Tiwaskar, Agam Vora
Chirally pure molecules or enantiomers are non-superimposable mirror images of each other with a chiral center (such as carbon, sulphur, nitrogen or phosphorous atom). An equimolar mixture of enantiomers forms a racemate. Chirally pure molecules (single enantiomers) are important in the field of drug discovery as the drug targets such as enzymes and receptors are enantioselective in nature. Clinical studies have demonstrated that chirally pure drugs exhibit different pharmacokinetic and metabolic profiles, reduced adverse events, improved safety profiles and similar therapeutic activity at lowered drug dosage as compared with the racemate in many therapeutic areas...
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29327005/vivo-complexes-with-antibacterial-quinolone-ligands-and-their-interaction-with-serum-proteins
#7
Daniele Sanna, Valeria Ugone, Giuseppe Sciortino, Péter Buglyó, Zsolt Bihari, Péter László Parajdi-Losonczi, Eugenio Garribba
Quinolone derivatives are among the most commonly prescribed antibacterials in the world and could also attract interest as organic ligands in the design of metal complexes with potential pharmacological activity. In this study, five compounds, belonging to the first (nalidixic acid or Hnal), second (ciprofloxacin or Hcip, and norfloxacin or Hnor) and third generation (levofloxacin or Hlev, and sparfloxacin or Hspar) of quinolones, were used as ligands to bind the VIVO2+ ion. In aqueous solution, mono- and bis-chelated species were formed as a function of pH, with cis-[VOHxL2(H2O)]x+ and [VOHxL2]x+, x = 0-2, being the major complexes at pH 7...
January 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29322874/mrsa-incidence-and-antibiotic-trends-in-urban-hand-infections-a-10-year-longitudinal-study
#8
Justin M Kistler, Joseph J Thoder, Asif M Ilyas
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is the most reported pathogen in hand infections at urban medical centers throughout the country. Antibiotic sensitivity trends are not well known. The purposes of this study were to examine and determine the drug resistance trends for MRSA infections of the hand and to provide recommendations for empiric antibiotic treatment based on sensitivity profiles. METHODS: A 10-year longitudinal, retrospective chart review was performed on all culture-positive hand infections encountered at a single urban medical center from 2005 to 2014...
January 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29321384/discovery-of-a-novel-fluoroquinolone-antibiotic-candidate-wfq-228-with-potent-antimicrobial-activity-and-the-potential-to-overcome-major-drug-resistance
#9
Tatsuya Hirano, Tomohiko Kinoshita, Daichi Kazamori, Satoshi Inoue, Kouji Nishimura, Asuka Sakurai, Kensuke Ohishi, Yasuhiro Kuramoto, Hirotaka Amano, Akira Yazaki
WFQ-101 with a unique N-1 substituent, 5-amino-4-fluoro-2-(hydroxymethyl)phenyl group, was selected as a lead compound through combination screening based on antimicrobial activity and the efflux index against quinolone-resistant (QR) Pseudomonas aeruginosa (P. aeruginosa). Through structural optimization, we identified WFQ-228 as a novel fluoroquinolone antibiotic candidate. WFQ-228 had potent and superior activity in comparison to levofloxacin (LVX) and ciprofloxacin (CIP) against clinical isolates of P. aeruginosa, Escherichia coli and Acinetobacter baumannii, including QR strains...
January 11, 2018: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29319470/coupling-next-generation-sequencing-to-dominant-positive-screens-for-finding-antibiotic-cellular-targets-and-resistance-mechanisms-in-escherichia-coli
#10
Hélène Gingras, Bédis Dridi, Philippe Leprohon, Marc Ouellette
In order to expedite the discovery of genes coding for either drug targets or antibiotic resistance, we have developed a functional genomic strategy termed Plas-Seq. This technique involves coupling a multicopy suppressor library to next-generation sequencing. We generated an Escherichia coli plasmid genomic library that was transformed into E. coli. These transformants were selected step by step using 0.25× to 2× minimum inhibitory concentrations for ceftriaxone, gentamicin, levofloxacin, tetracycline or trimethoprim...
January 10, 2018: Microbial Genomics
https://www.readbyqxmd.com/read/29313203/prevalence-and-antimicrobial-resistance-of-ureaplasma-spp-and-mycoplasma-hominis-isolated-from-semen-samples-of-infertile-men-in-shanghai-china-from-2011-to-2016
#11
Y-H Zhou, H-X Ma, Y Yang, W-M Gu
This study was conducted to estimate the prevalence and antimicrobial resistance rate of Ureaplasma spp. and Mycoplasma hominis that were isolated from the semen samples of infertile males in Shanghai, China from 2011 to 2016. A total of 5016 infertile males and 412 healthy male controls were examined. The cultivation, identification, and antimicrobial susceptibilities of Ureaplasma spp. and M. hominis were assessed by using a Mycoplasma IST kit that was performed in parallel to selective solid agar cultivation...
January 8, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29311436/legionnaires-disease-as-an-occupational-risk-related-to-decontamination-work-after-the-fukushima-nuclear-disaster-a-case-report
#12
Toyoaki Sawano, Masaharu Tsubokura, Akihiko Ozaki, Claire Leppold, Shigeaki Kato, Toshiyuki Kambe
OBJECTIVES: Legionnaires' disease (LD), which is atypical pneumonia with a broad variety of clinical symptoms, can lead to death despite its low incidence. There are multiple risk factors for LD, yet little information is available concerning what kind of environmental factors are linked to higher risk of LD development. We have experienced a fatal case of LD, which occurred in a decontamination worker after the Fukushima nuclear disaster. CASE: A 53-year-old Japanese male visited our hospital with symptoms of fever, vomiting, diarrhea, and altered mental status, but not with respiratory manifestations...
December 28, 2017: Journal of Occupational Health
https://www.readbyqxmd.com/read/29310512/moxifloxacin-versus-levofloxacin-for-antibacterial-prophylaxis-in-acute-leukemia-patients
#13
Pauline Lee, Randall W Knoebel, Jennifer Pisano, Natasha N Pettit
Objective The primary endpoint of this study was to determine the incidence of febrile neutropenia among patients receiving either moxifloxacin or levofloxacin for antibacterial prophylaxis. Secondary endpoints were number of documented infections and in-hospital mortality in patients who develop febrile neutropenia. Methods A single-center retrospective cohort analysis at a large tertiary care academic medical center was conducted. This study included adult acute leukemia patients (age ≥18 years old) who received inpatient antibacterial prophylaxis (moxifloxacin or levofloxacin) from 1 July 2012 to 1 October 2014...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29307796/mesoporous-silica-nanoparticles-decorated-with-polycationic-dendrimers-for-infection-treatment
#14
Blanca González, Montserrat Colilla, Jaime Díez, Daniel Pedraza, Marta Guembe, Isabel Izquierdo-Barba, María Vallet-Regí
This work aims to provide an effective and novel solution for the treatment of infection by using nanovehicles loaded with antibiotics capable of penetrating the bacterial wall, thus increasing the antimicrobial effectiveness. These nanosystems, named "nanoantibiotics", are composed of mesoporous silica nanoparticles (MSNs), which act as nanocarriers of an antimicrobial agent (levofloxacin, LEVO) localized inside the mesopores. To provide the nanosystem of bacterial membrane interaction capability, a polycationic dendrimer, concretely the poly(propyleneimine) dendrimer of third generation (G3), was covalently grafted to the external surface of the LEVO-loaded MSNs...
January 4, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29306310/-delayed-pancytopenia-due-to-treatment-with-levofloxacin-a-case-report
#15
Diana González-Vaquero, Juan Enrique Juan Enrique Martínez-de la Plata, Alba Martos-Rosa, Pedro José Acosta-Robles, José Antonio Morales-Molina
No abstract text is available yet for this article.
January 1, 2018: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/29301368/antimicrobial-activities-of-european-propolis-collected-from-various-geographic-origins-alone-and-in-combination-with-antibiotics
#16
Issam Al-Ani, Stefan Zimmermann, Jürgen Reichling, Michael Wink
Background: Propolis consists of a complex mixture of resinous substances collected by honeybees from different plant sources. The objective of this study was to investigate the chemical composition, biological activities, and synergistic properties with antibiotics of propolis samples collected from various geographic origins (Germany, Ireland, and Czech Republic). Methods: The chemical composition of the propolis was analyzed by Gas Liquid Chromatography-Mass Spectrometry (GLC-MS) and High-performance liquid chromatography (HPLC)...
January 3, 2018: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/29300775/analytical-profiling-of-mutations-in-quinolone-resistance-determining-region-of-gyra-gene-among-upec
#17
Lesley R Varughese, Meenakshi Rajpoot, Soniya Goyal, Ravinder Mehra, Vinod Chhokar, Vikas Beniwal
Mutations in gyrA are the primary cause of quinolone resistance encountered in gram-negative clinical isolates. The prospect of this work was to analyze the role of gyrA mutations in eliciting high quinolone resistance in uropathogenic E.coli (UPEC) through molecular docking studies. Quinolone susceptibility testing of 18 E.coli strains isolated from UTI patients revealed unusually high resistance level to all the quinolones used; especially norfloxacin and ciprofloxacin. The QRDR of gyrA was amplified and sequenced...
2018: PloS One
https://www.readbyqxmd.com/read/29298125/nontyphoidal-salmonella-enterica-nonsusceptible-to-both-levofloxacin-and-ceftriaxone-in-nebraska-united-states-2014-2015
#18
Caitlin N Murphy, Randal C Fowler, Andrea J Williams, Peter C Iwen, Paul D Fey
Nontyphoidal Salmonella enterica is a common cause of illness in humans ranging from gastroenteritis to invasive disease. National surveillance programs continually monitor trends in antimicrobial resistance patterns and mechanisms of resistance to identify emerging public health threats. Our study shows the emergence of nonsusceptibility to both levofloxacin and ceftriaxone, a concerning phenotype that threatens first-line antibiotic therapy, in Salmonella isolates recovered between 2014 and 2015. From 2010 to 2013 the rate of resistance increased from 0...
January 3, 2018: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29290527/mutant-selection-window-of-four-quinolone-antibiotics-against-clinical-isolates-of-streptococcus-pneumoniae-haemophilus-influenzae-and-moraxella-catarrhalis
#19
Hajime Nakai, Takumi Sato, Takashi Uno, Emiko Furukawa, Masato Kawamura, Hiroshi Takahashi, Akira Watanabe, Shigeru Fujimura
Community-acquired pneumonia and otitis media are caused by several bacterial species, including Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. For the treatment of these diseases, various quinolones are frequently used. We determined the mutant prevention concentration (MPC) of four quinolones, levofloxacin, sitafloxacin, tosufloxacin, and garenoxacin, using 92 clinical isolates and evaluated each mutant selection window (MSW). Furthermore, the DNA sequence of the quinolone resistance-determining region (QRDR) for the resistant mutant selected based on the MSW was determined...
December 29, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29286016/granulated-sugar-for-adjuvant-treatment-of-surgical-wound-infection-due-to-multi-drug-resistant-pathogens-in-a-child-with-sarcoma-a-case-report-and-literature-review
#20
Aldo Naselli, Laura Accame, Piero Buffa, Anna Loy, Roberto Bandettini, Alberto Garaventa, Ornella Della Casa Alberighi, Elio Castagnola
The use of sugar for treating wounds which are difficult to heal and positive to resistant pathogens has already been documented. The authors describe the successful treatment by direct instillation of granular sugar in the antibiotic-resistant infected surgical site wound of a child with sarcoma. Sugar instillation in the extended spectrum beta-lactamase (ESBL)-producing Enterobacter cloacae positive wound, in addition to systemic treatment with meropenem and levofloxacin, allowed culture negativization in six days and complete wound healing in 30 days...
December 1, 2017: Le Infezioni in Medicina
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