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https://www.readbyqxmd.com/read/28325220/action-of-antibiotic-oxacillin-on-in%C3%A2-vitro-growth-of-methicillin-resistant-staphylococcus-aureus-mrsa-previously-treated-with-homeopathic-medicines
#1
Tânia Aguiar Passeti, Leandro Ribeiro Bissoli, Ana Paula Macedo, Registila Beltrame Libame, Susana Diniz, Silvia Waisse
BACKGROUND: Resistance to antibiotics is a major public health concern worldwide. New treatment options are needed and homeopathy is one such option. We sought to assess the effect of the homeopathic medicine Belladonna (Bell) and a nosode (biotherapy) prepared from a multi-drug resistant bacterial species, methicillin-resistant Staphylococcus aureus (MRSA), on the same bacterium. METHODS: Bell and MRSA nosode were prepared in 6cH and 30cH potencies in 30% alcohol and sterile water, according to the Brazilian Homeopathic Pharmacopeia and tested on MRSA National Collection of Type Cultures (NCTC) 10442...
February 2017: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/28321214/exogenous-l-valine-promotes-phagocytosis-to-kill-multidrug-resistant-bacterial-pathogens
#2
Xin-Hai Chen, Shi-Rao Liu, Bo Peng, Dan Li, Zhi-Xue Cheng, Jia-Xin Zhu, Song Zhang, Yu-Ming Peng, Hui Li, Tian-Tuo Zhang, Xuan-Xian Peng
The emergence of multidrug-resistant bacteria presents a severe threat to public health and causes extensive losses in livestock husbandry and aquaculture. Effective strategies to control such infections are in high demand. Enhancing host immunity is an ideal strategy with fewer side effects than antibiotics. To explore metabolite candidates, we applied a metabolomics approach to investigate the metabolic profiles of mice after Klebsiella pneumoniae infection. Compared with the mice that died from K. pneumoniae infection, mice that survived the infection displayed elevated levels of l-valine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28303819/prevalence-and-genetic-mechanisms-of-antimicrobial-resistance-in-staphylococcus-species-a-multicentre-report-of-the-indian-council-of-medical-research-antimicrobial-resistance-surveillance-network
#3
Sunanda Rajkumar, Sujatha Sistla, Meerabai Manoharan, Madhan Sugumar, Niveditha Nagasundaram, Subhash Chandra Parija, Pallab Ray, Yamuna Devi Bakthavatchalam, Balaji Veeraraghavan, Arti Kapil, Kamini Walia, V C Ohri
PURPOSE: Routine surveillance of antimicrobial resistance (AMR) is an essential component of measures aimed to tackle the growing threat of resistant microbes in public health. This study presents a 1-year multicentre report on AMR in Staphylococcus species as part of Indian Council of Medical Research-AMR surveillance network. MATERIALS AND METHODS: Staphylococcus species was routinely collected in the nodal and regional centres of the network and antimicrobial susceptibility testing was performed against a panel of antimicrobials...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28302376/emerging-trends-in-antibiotic-resistance-implications-for-emergency-medicine
#4
Ali Pourmand, Maryann Mazer-Amirshahi, Gregory Jasani, Larissa May
BACKGROUND: Many bacteria are demonstrating increasing levels of resistance to commonly used antibiotics. While this has implications for the healthcare system as a whole, many patients infected with these resistant organisms will initially present to the emergency department (ED). The purpose of this review is to provide a summary of current trends in infections caused by the most clinically relevant resistant organisms encountered in emergency medicine. METHODS: Bacteria were selected based on the Centers for Disease Control and Prevention's National Action Plan for Combating Antibiotic Resistant Bacteria, and PubMed database...
March 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28293236/interferon-lambda-modulating-immunity-in-infectious-diseases
#5
REVIEW
Mohammedyaseen Syedbasha, Adrian Egli
Interferon lambdas (IFN-λs; IFNL1-4) modulate immunity in the context of infections and autoimmune diseases, through a network of induced genes. IFN-λs act by binding to the heterodimeric IFN-λ receptor (IFNLR), activating a STAT phosphorylation-dependent signaling cascade. Thereby hundreds of IFN-stimulated genes are induced, which modulate various immune functions via complex forward and feedback loops. When compared to the well-characterized IFN-α signaling cascade, three important differences have been discovered...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28293038/naphthacemycins-novel-circumventors-of-%C3%AE-lactam-resistance-in-mrsa-produced-by-streptomyces-sp-kb-3346-5-i-the-taxonomy-of-the-producing-strain-and-the-fermentation-isolation-and-antibacterial-activities
#6
Atsushi Fukumoto, Yong-Pil Kim, Atsuko Matsumoto, Yoko Takahashi, Makoto Suzuki, Hideyuki Onodera, Hiroshi Tomoda, Hidehito Matsui, Hideaki Hanaki, Masato Iwatsuki, Satoshi Ōmura, Kazuro Shiomi
Screening for circumventors of β-lactam resistance in methicillin-resistant Staphylococcus aureus (MRSA) led us to find 17 novel antibiotics, naphthacemycins A1-A11, B1-B4 and C1-C2. The naphthacemycins were isolated from a cultured broth of Streptomyces sp. KB-3346-5 by repeated silica gel column chromatography and HPLC. Naphthacemycins enhanced imipenem activity 100-500 times against MRSA at 0.5 μg ml(-1), and naphthacemycins A4-A11 themselves showed MIC50 values of 1-4 μg ml(-1) against 22 MRSA strains...
March 15, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28293036/naphthacemycins-novel-circumventors-of-%C3%AE-lactam-resistance-in-mrsa-produced-by-streptomyces-sp-kb-3346-5-ii-structure-elucidation
#7
Atsushi Fukumoto, Yong-Pil Kim, Masato Iwatsuki, Tomoyasu Hirose, Toshiaki Sunazuka, Hideaki Hanaki, Satoshi Ōmura, Kazuro Shiomi
Seventeen new compounds, naphthacemycins A1-A11, B1-B4 and C1-C2, were isolated from a cultured broth of Streptomyces sp. KB-3346-5 during screening for circumventors of β-lactam resistance in methicillin-resistant Staphylococcus aureus. Their structures were elucidated by spectroscopic studies, including NMR and X-ray crystallographic analysis. The naphthacemycin A series has a new skeleton displaying a 7-phenylnaphthacene-5,6,11(12H)-trione. In contrast, the quinone moiety of the A series is changed to dehydroxyquinol in the B series and to a semiquinone-like structure in the C series...
March 15, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28292273/ocular-bacterial-infections-at-quiha-ophthalmic-hospital-northern-ethiopia-an-evaluation-according-to-the-risk-factors-and-the-antimicrobial-susceptibility-of-bacterial-isolates
#8
Mebrahtu Teweldemedhin, Muthupandian Saravanan, Araya Gebreyesus, Dawit Gebreegziabiher
BACKGROUND: External and intraocular infections can lead to visual impairments, which is a major public health problem. Bacteria are the most frequent pathogens affecting ocular structures; the increasing rate of antimicrobial drug resistance is a worldwide concern. The aim of this study was to determine the occurrence of bacteria in ocular infections, their antimicrobial susceptibility patterns, and risk factors in bacterial ocular infection. METHODS: A hospital based cross-sectional study was conducted from September 2015 to December 2015 at Quiha Ophthalmic Hospital, Tigray, northern Ethiopia...
March 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28287715/a-dual-recognition-fret-based-platform-for-one-step-sensitive-detection-of-pathogenic-bacteria-using-fluorescent-vancomycin-gold-nanoclusters-and-aptamer-gold-nanoparticles
#9
Mengqun Yu, Hong Wang, Fei Fu, Linyao Li, Jing Li, Gan Li, Yang Song, Mark T Swihart, Erqun Song
The effective monitoring, identification, and quantification of pathogenic bacteria is essential for addressing serious public health issues. In this study, we present a universal and facile one-step strategy for sensitive and selective detection of pathogenic bacteria using a dual molecular affinity-based Förster (fluorescence) resonance energy transfer (FRET) platform based on the recognition of bacterial cell walls by antibiotic and aptamer molecules, respectively. As a proof of concept, Vancomycin (Van), and a nucleic acid aptamer were employed in a model dual recognition scheme for detecting Staphylococcus aureus (S...
March 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28277903/a-human-monoclonal-antibody-that-specifically-binds-and-inhibits-the-staphylococcal-complement-inhibitor-protein-scin
#10
Hedzer Hoekstra, Francisco Romero Pastrana, Hendrik P J Bonarius, Kok P M van Kessel, Goffe S Elsinga, Neeltje Kooi, Herman Groen, Jan Maarten van Dijl, Girbe Buist
Staphylococcus aureus is a serious public health burden causing a wide variety of infections. Earlier detection of such infections could result in faster and more directed therapies that also prevent resistance development. Human monoclonal antibodies (humAbs) are promising tools for diagnosis and therapy owing to their relatively straightforward synthesis, long history of safe clinical use and high target specificity. Here we show that the humAb 6D4, which was obtained from a random screen of B-cells producing antibodies that bind to whole cells of S...
February 16, 2017: Virulence
https://www.readbyqxmd.com/read/28271855/prevalence-of-foodborne-pathogens-in-food-from-selected-african-countries-a-meta-analysis
#11
REVIEW
Narayan Paudyal, Victor Anihouvi, Joseph Hounhouigan, Maitshwarelo Ignatius Matsheka, Bonno Sekwati-Monang, Wisdom Amoa-Awua, Amy Atter, Nina Bernice Ackah, Samuel Mbugua, Agnes Asagbra, Warda Abdelgadir, Jesca Nakavuma, Mogens Jakobsen, Weihuan Fang
Food safety information in the African region is insufficient and fragmented due to lack of surveillance, documentation and reporting, thereby resulting in inefficient utilization of resources, duplication of activities, and lack of synergy among the countries of the region. This paper reviews the prevalence of foodborne pathogens in seven African countries (Benin, Botswana, Ghana, Kenya, Nigeria, Sudan and Uganda) from papers in regional or international journals published between January 2000 and December 2015...
March 6, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28265515/genomic-analysis-of-st88-community-acquired-methicillin-resistant-staphylococcus-aureus-in-ghana
#12
Grace Kpeli, Andrew H Buultjens, Stefano Giulieri, Evelyn Owusu-Mireku, Samuel Y Aboagye, Sarah L Baines, Torsten Seemann, Dieter Bulach, Anders Gonçalves da Silva, Ian R Monk, Benjamin P Howden, Gerd Pluschke, Dorothy Yeboah-Manu, Timothy Stinear
BACKGROUND: The emergence and evolution of community-acquired methicillin resistant Staphylococcus aureus (CA-MRSA) strains in Africa is poorly understood. However, one particular MRSA lineage called ST88, appears to be rapidly establishing itself as an "African" CA-MRSA clone. In this study, we employed whole genome sequencing to provide more information on the genetic background of ST88 CA-MRSA isolates from Ghana and to describe in detail ST88 CA-MRSA isolates in comparison with other MRSA lineages worldwide...
2017: PeerJ
https://www.readbyqxmd.com/read/28261187/detection-and-genetic-environment-of-pleuromutilin-lincosamide-streptogramin-a-resistance-genes-in-staphylococci-isolated-from-pets
#13
Fengru Deng, Huiwen Wang, Yifei Liao, Jun Li, Andrea T Feßler, Geovana B Michael, Stefan Schwarz, Yang Wang
Increasing emergence of staphylococci resistant to pleuromutilins, lincosamides, and streptogramin A (PLSA) and isolated from humans and pets is a growing public health concern worldwide. Currently, there was only one published study regarding one of the PLSA genes, vga(A) detected in staphylococci isolated from cat. In this study, eleven pleuromutilin-resistant staphylococci from pets and two from their owners were isolated and further characterized for their antimicrobial susceptibilities, plasmid profiles, genotypes, and genetic context of the PLSA resistance genes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28261101/evaluation-of-the-antibacterial-effects-of-flavonoid-combination-from-the-leaves-of-dracontomelon-dao-by-microcalorimetry-and-the-quadratic-rotary-combination-design
#14
Yang Li, Houlin Xia, Mingquan Wu, Jiabo Wang, Xiaohua Lu, Shizhang Wei, Kun Li, Lifu Wang, Ruilin Wang, Pan Zhao, Yanling Zhao, Xiaohe Xiao
Skin infectious disease is a common public health problem due to the emergence of drug-resistant bacteria caused by the antibiotic misuse. Dracontomelon dao (Blanco) Merr. et Rolfe, a traditional Chinese medicine, has been used for the treatment of various skin infectious diseases over 1000 of years. Previous reports have demonstrated that the leaves of D. dao present favorable antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtitles. The flavonoids are the main components of the ethyl acetate extract of D...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28246379/the-antibiotic-resistance-crisis-with-a-focus-on-the-united-states
#15
REVIEW
Evan Martens, Arnold L Demain
Beginning with the discovery of penicillin by Alexander Fleming in the late 1920s, antibiotics have revolutionized the field of medicine. They have saved millions of lives each year, alleviated pain and suffering, and have even been used prophylactically for the prevention of infectious diseases. However, we have now reached a crisis where many antibiotics are no longer effective against even the simplest infections. Such infections often result in an increased number of hospitalizations, more treatment failures and the persistence of drug-resistant pathogens...
March 1, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28236797/community-acquired-pneumonia-caused-by-methicillin-resistant-staphylococcus-aureus-in-critically-ill-patients-systematic-review
#16
Nuria Carballo, Marta De Antonio-Cuscó, Daniel Echeverría-Esnal, Sonia Luque, Esther Salas, Santiago Grau
INTRODUCTION: Community-acquired pneumonia (CAP) is associated with high morbidity and mortality rates. Despite methicillin-resistant Staphylococcus aureus (MRSA) having often been associated with nosocomial pneumonia, the condition of some MRSA CAP patients is severe enough to warrant their being admitted to ICU. OBJECTIVE: The purpose of this study is to conduct a systematic review of the literature on antibiotic treatment of MRSA CAP in critically-ill patients...
March 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/28235987/staphylococcus-enterotoxin-profile-of-china-isolates-and-the-superantigenicity-of-some-novel-enterotoxins
#17
Menglu Shen, Yi Li, Linlin Zhang, Songbao Dai, Jiashun Wang, Yongqing Li, Lei Zhang, Jinhai Huang
The genus of staphylococcus widely distributes in environments and contributes to a variety of animal and human diseases. The enterotoxins (SEs) secreted by this type of pathogen have been the leading cause of bacterial toxic shock syndrome and food poisoning, and thus present a substantial concern to public health. In this study, we analyzed the superantigen profile of 122 staphylococcus strains isolated from diverse sources. When screened for the presence and prevalence of 17 known se or se-like (sel) genes, except selj, all other genes were detected in these isolates...
February 24, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28221858/genotypic-and-phenotypic-characterization-of-methicillin-resistant-staphylococcus-aureus-isolated-from-bovine-mastitic-milk-in-korea
#18
Jae Won Song, Soo Jin Yang, Sook Shin, Keun Seok Seo, Yong Ho Park, Kun Taek Park
Staphylococcus aureus is a major etiological pathogen for bovine mastitis, foodborne illness, and various clinical infections. Methicillin-resistant S. aureus (MRSA) has been isolated from bovine mastitic milk, and the presence of MRSA in milk is a major public health concern. We investigated the frequency of MRSA isolation from mastitic raw milk in Korea and characterized the patterns of antimicrobial resistance, virulence, and genotypes of the MRSA isolates. A total of 1,222 raw milk samples were collected from 47 dairy farms in Gyeonggi province from 2011 to 2012...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28216007/microbiological-quality-of-pastrami-and-associated-surfaces-at-the-point-of-sale-in-kayseri-turkey
#19
Y Yildirim, N Ertas Onmaz, Z Gonulalan, S Al, A Yildirim, F Karadal, H Hizlisoy, Ş Pamuk
OBJECTIVE: The aim of this study is to trace the possible relations between the hygienic status of slicing utensils and the microbiological quality of pastrami. STUDY DESIGN: A total of 75 pastrami retail markets were visited in Kayseri, Turkey, where the pastrami (a ready-to-eat meat product) is commonly produced and consumed. Sliced pastrami, the cutting board and knife surface swabs were collected from each pastrami retail point to trace possible sources of contamination...
February 16, 2017: Public Health
https://www.readbyqxmd.com/read/28197738/vaccines-for-staphylococcus-aureus-and-target-populations
#20
Clarissa Pozzi, Reuben Olaniyi, Lassi Liljeroos, Ilaria Galgani, Rino Rappuoli, Fabio Bagnoli
Staphylococcus aureus is a leading pathogen in surgical site, intensive care unit, and skin infections, as well as healthcare-associated pneumonias. These infections are associated with an enormous burden of morbidity, mortality, and increase of hospital length of stay and patient cost. S. aureus is impressively fast in acquiring antibiotic resistance, and multidrug-resistant strains are a serious threat to human health. Due to resistance or insufficient effectiveness, antibiotics and bundle measures leave a tremendous unmet medical need worldwide...
February 15, 2017: Current Topics in Microbiology and Immunology
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