mardi 29 novembre 2016

Nature nurtures the design of new semi-synthetic macrolide antibiotics

Nature nurtures the design of new semi-synthetic macrolide antibiotics

The Journal of Antibiotics advance online publication, November 30 2016. doi:10.1038/ja.2016.137

Authors: Prabhavathi Fernandes, Evan Martens & David Pereira



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Bacterial proteases, untapped antimicrobial drug targets

Bacterial proteases, untapped antimicrobial drug targets

The Journal of Antibiotics advance online publication, November 30 2016. doi:10.1038/ja.2016.138

Authors: Elizabeth Culp & Gerard D Wright



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Revisiting unexploited antibiotics in search of new antibacterial drug candidates: the case of MSD-819 (6-chloro-2-quinoxalinecarboxylic acid 1,4-dioxide)

Revisiting unexploited antibiotics in search of new antibacterial drug candidates: the case of MSD-819 (6-chloro-2-quinoxalinecarboxylic acid 1,4-dioxide)

The Journal of Antibiotics advance online publication, November 30 2016. doi:10.1038/ja.2016.140

Authors: Nicola Ooi & Alex J O'Neill



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Quinoline and naphthalene derivatives from Saccharopolyspora sp. YIM M13568

Quinoline and naphthalene derivatives from Saccharopolyspora sp. YIM M13568

The Journal of Antibiotics advance online publication, November 30 2016. doi:10.1038/ja.2016.142

Authors: Mingwei Sun, Jinhuan Ou, Wenjun Li & Chunhua Lu



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mardi 22 novembre 2016

8′-epimer of herbicidin F and its congeners from Streptomyces sp. YIM 66142

8′-epimer of herbicidin F and its congeners from Streptomyces sp. YIM 66142

The Journal of Antibiotics advance online publication, November 23 2016. doi:10.1038/ja.2016.133

Authors: Ju-Cheng Zhang, Ya-Bin Yang, Guang-Yi Chen, Xiao-Zhan Li, Ming Hu, Bang-Yan Wang, Bao-Hui Ruan, Hao Zhou, Li-Xing Zhao & Zhong-Tao Ding



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Anti-fungal activity of Ctn[15–34], the C-terminal peptide fragment of crotalicidin, a rattlesnake venom gland cathelicidin

Anti-fungal activity of Ctn[15–34], the C-terminal peptide fragment of crotalicidin, a rattlesnake venom gland cathelicidin

The Journal of Antibiotics advance online publication, November 23 2016. doi:10.1038/ja.2016.135

Authors: Carolina Sidrim P Cavalcante, Cláudio B Falcão, Raquel OS Fontenelle, David Andreu & Gandhi Rádis-Baptista



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jeudi 17 novembre 2016

Behind the scenes of JAC: the publisher's role

In this brief article, we focus on Oxford University Press's role as the publisher of the JAC and how it supports authors and readers. The article defines the role of the publisher, as opposed to the Editorial team, Editorial Office or Society owner. It reviews three key functions at the publisher, namely, editorial, production and marketing.



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40 years of medical mycology at JAC

In the past 40 years, medical mycology has gone from a curiosity in the basements of medical schools to a mainstream branch of clinical microbiology and infectious diseases. Long gone are the days of carefully curated collections of organisms identified purely based on morphology and skill, the lack of therapeutic interventions beyond amphotericin B and the occasional strange case in the ward of a diabetic patient with mucormycosis. We highlight advances in medical mycology as reflected in the past 40 years of JAC.



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Therapeutic drug monitoring in the past 40 years of the Journal of Antimicrobial Chemotherapy

Since the Journal of Antimicrobial Chemotherapy was first published in 1975, papers addressing therapeutic drug monitoring (TDM) have been a regular feature. Initially they focused on laboratory aspects of drug concentration measurement then they changed more to the application of TDM in a clinical setting. Over its history, the Journal has provided its readership with the latest technological and scientific advances in TDM and has helped to drive changes in TDM that have directly impacted on patient care. These have varied from improvement in the quality of antimicrobial measurements through better identification of dosage regimens and TDM targets that help predict outcome and adverse events. Despite these advances in our understanding of the science and practice of TDM, there remain many areas of uncertainty. As we move into the next 40 years, it is clear that the Journal will continue to provide the readership with the latest science and opinion in this important area.



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Mosaic tetracycline resistance genes encoding ribosomal protection proteins

First reported in 2003, mosaic tetracycline resistance genes are a subgroup of the genes encoding ribosomal protection proteins (RPPs). They are formed when two or more RPP-encoding genes recombine resulting in a functional chimera. To date, the majority of mosaic genes are derived from sections of three RPP genes, tet(O), tet(W) and tet(32), with others comprising tet(M) and tet(S). In this first review of mosaic genes, we report on their structure, diversity and prevalence, and suggest that these genes may be responsible for an under-reported contribution to tetracycline resistance in bacteria.



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A review of treatment modalities for Middle East Respiratory Syndrome

The Middle East Respiratory Syndrome coronavirus (MERS-CoV) has been a focus of international attention since its identification in 2012. Epidemiologically it is characterized by sporadic community cases, which are amplified by hospital-based outbreaks. Healthcare facilities in 27 countries from most continents have experienced imported cases, with the most significant outbreak involving 186 cases in Korea. The mortality internationally is 36% and guidance for clinical management has yet to be developed. Most facilities and healthcare providers outside of the Middle East receiving patients have no or little experience in the clinical management of MERS. When a case does occur there is likely little time for a critical appraisal of the literature and putative pharmacological options. We identified published literature on the management of both MERS-CoV and the Severe Acute Respiratory Syndrome coronavirus (SARS-CoV) through searches of PubMed and WHO and the US CDC websites up to 30 April 2016. A total of 101 publications were retrieved for critical appraisal. Most published literature on therapeutics for MERS are in vitro experiments, animal studies and case reports. Current treatment options for MERS can be categorized as: immunotherapy with virus-specific antibodies in convalescent plasma; polyclonal and monoclonal antibodies produced in vitro or in genetically modified animals; and antiviral agents. The use of any therapeutics in MERS-CoV remains investigational. The therapeutic agents with potential benefits and warranting further investigation include convalescent plasma, interferon-β/ribavirin combination therapy and lopinavir. Corticosteroids, ribavirin monotherapy and mycophenolic acid likely have toxicities that exceed potential benefits.



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Multilevel population genetic analysis of vanA and vanB Enterococcus faecium causing nosocomial outbreaks in 27 countries (1986-2012)

Emergence of endemic MLST non-typeable vancomycin-resistant Enterococcus faecium

Characterization of a novel staphylococcal cassette chromosome composite island from community-associated MRSA isolated in aged care facilities in Western Australia

Description and characterization of a penicillin-resistant Streptococcus dysgalactiae subsp. equisimilis clone isolated from blood in three epidemiologically linked patients

Multiplication of blaOXA-23 is common in clinical Acinetobacter baumannii, but does not enhance carbapenem resistance

Molecular epidemiology of KPC-producing Klebsiella pneumoniae from invasive infections in Italy: increasing diversity with predominance of the ST512 clade II sublineage

The spread of KPC-producing Enterobacteriaceae in Spain: WGS analysis of the emerging high-risk clones of Klebsiella pneumoniae ST11/KPC-2, ST101/KPC-2 and ST512/KPC-3

WGS for surveillance of antimicrobial resistance: a pilot study to detect the prevalence and mechanism of resistance to azithromycin in a UK population of non-typhoidal Salmonella

Salmonella Typhimurium exhibits fluoroquinolone resistance mediated by the accumulation of the antioxidant molecule H2S in a CysK-dependent manner

Detection of the plasmid-mediated colistin-resistance gene mcr-1 in faecal metagenomes of Dutch travellers

Evaluation of a novel procedure for rapid detection of carbapenemase-producing Enterobacteriaceae (CPE) using the LightMix(R) modular carbapenemase kits

Evaluation of the Scan(R) 1200 as a rapid tool for reading antibiotic susceptibility testing by the disc diffusion technique

Identification of inhibitors for single-stranded DNA-binding proteins in eubacteria

In vitro activity of SecA inhibitors in combination with carbapenems against carbapenem-hydrolysing class D {beta}-lactamase-producing Acinetobacter baumannii

In vitro activity of anidulafungin in combination with amphotericin B or voriconazole against biofilms of five Candida species

Longitudinal (2001-14) analysis of enterococci and VRE causing invasive infections in European and US hospitals, including a contemporary (2010-13) analysis of oritavancin in vitro potency

Comparative in vitro activities of ceftaroline and ceftriaxone against bacterial pathogens associated with respiratory tract infections: results from the AWARE surveillance study

In vivo Mycobacterium tuberculosis fluoroquinolone resistance emergence: a complex phenomenon poorly detected by current diagnostic tests

Assessment of antivirulence activity of several D-amino acids against Acinetobacter baumannii and Pseudomonas aeruginosa

Pharmacokinetics of high-dose nebulized amikacin in ventilated critically ill patients

HIV-1 drug resistance mutations emerging on darunavir therapy in PI-naive and -experienced patients in the UK

Characterization of NS5A polymorphisms and their impact on response rates in patients with HCV genotype 2 treated with daclatasvir-based regimens

Abacavir has no prothrombotic effect on platelets in vitro

Effectiveness and safety of an abacavir/lamivudine + rilpivirine regimen for the treatment of HIV-1 infection in naive patients

Prediction of hard cardiovascular events in HIV patients

mercredi 16 novembre 2016

Bio-based production of fuels and industrial chemicals by repurposing antibiotic-producing type I modular polyketide synthases: opportunities and challenges

Bio-based production of fuels and industrial chemicals by repurposing antibiotic-producing type I modular polyketide synthases: opportunities and challenges

The Journal of Antibiotics advance online publication, November 16 2016. doi:10.1038/ja.2016.136

Authors: Satoshi Yuzawa, Jay D Keasling & Leonard Katz



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mercredi 9 novembre 2016

Screening of NCI-DTP library to identify new drug candidates for Borrelia burgdorferi

Screening of NCI-DTP library to identify new drug candidates for Borrelia burgdorferi

The Journal of Antibiotics advance online publication, November 9 2016. doi:10.1038/ja.2016.131

Authors: Venkata Raveendra Pothineni, Dhananjay Wagh, Mustafeez Mujtaba Babar, Mohammed Inayathullah, R Edward Watts, Kwang-Min Kim, Mansi B Parekh, Abhijit Achyut Gurjarpadhye, David Solow-Cordero, Lobat Tayebi & Jayakumar Rajadas



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mercredi 2 novembre 2016

A new cytotoxic and anti-fungal C-glycosylated benz[α]anthraquinone from the broth of endophytic Streptomyces blastomycetica strain F4-20

A new cytotoxic and anti-fungal C-glycosylated benz[α]anthraquinone from the broth of endophytic Streptomyces blastomycetica strain F4-20

The Journal of Antibiotics advance online publication, November 2 2016. doi:10.1038/ja.2016.126

Authors: He Yan, Yang Li, Xing Y Zhang, Wan Y Zhou & Tao J Feng



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Re-identification of the ascofuranone-producing fungus Ascochyta viciae as Acremonium sclerotigenum

Re-identification of the ascofuranone-producing fungus Ascochyta viciae as Acremonium sclerotigenum

The Journal of Antibiotics advance online publication, November 2 2016. doi:10.1038/ja.2016.132

Authors: Yasuaki Hijikawa, Motomichi Matsuzaki, Shigeo Suzuki, Daniel Ken Inaoka, Ryoko Tatsumi, Yasutoshi Kido & Kiyoshi Kita



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