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https://www.readbyqxmd.com/read/28719790/disease-burden-characteristics-and-outcomes-of-methicillin-resistant-staphylococcus-aureus-bloodstream-infection-in-hong-kong
#1
Joyce H S You, Kin-Wing Choi, Tin-Yau Wong, Margaret Ip, Wai-Kit Ming, Rity Yee-Kwan Wong, Sze-Ngai Chan, Hoi-Tung Tse, Carrie T S Chau, Nelson L S Lee
We aimed to describe disease burden, characteristics, and outcomes of methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection (BSI) in Hong Kong. A retrospective, observational study was conducted in 26 Hong Kong public hospitals between January 2010 and December 2012. The primary outcome measures were 30-day mortality rate and infection-related hospital cost. Of 1133 patients reviewed, 727 (64.17%) were male, 1075 (94.88%) had health care-associated community-onset and 44 (3.88%) had hospital-onset MRSA infection...
July 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28698673/a-quinolinol-based-small-molecule-with-anti-mrsa-activity-that-targets-bacterial-membrane-and-promotes-fermentative-metabolism
#2
Dhanalakshmi R Nair, Ji Chen, João M Monteiro, Michaele Josten, Mariana G Pinho, Hans-Georg Sahl, Jimmy Wu, Ambrose Cheung
In a loss-of-viability screen of small molecules against methicillin-resistant Staphylococcus aureus (MRSA) USA300, we found a small molecule, designated DNAC-2, which has an MIC of 8 μg ml(-1). DNAC-2 is a quinolinol derivative that is bactericidal at 2X MIC. Macromolecular synthesis assays at 2 × MIC of DNAC-2 revealed inhibition of DNA, cell wall, RNA and protein synthesis within fifteen to thirty minutes of treatment when compared to the untreated control. Transmission electron microscopy of DNAC-2-treated cells revealed a significantly thicker cell wall and impaired daughter cell separation...
July 12, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28697851/incidence-and-effects-of-seasonality-on-nonpurulent-lower-extremity-cellulitis-after-the-emergence-of-community-acquired-methicillin-resistant-staphylococcus-aureus
#3
Jasmine R Marcelin, Douglas W Challener, Eugene M Tan, Brian D Lahr, Larry M Baddour
Nonpurulent lower extremity cellulitis (NLEC) is a common clinical diagnosis, with β-hemolytic streptococci and Staphylococcus aureus considered to be the most frequent causes. In 1999, the US Public Health Service alerted clinicians to the presence of community-acquired methicillin-resistant S aureus (CA-MRSA) infections in 4 children in the upper Midwest. Since then, it has become a well-recognized cause of skin and soft-tissue infections, in particular, skin abscess. A previous population-based study of NLEC in Olmsted County, Minnesota, reported an unadjusted incidence rate of 199 per 100,000 person-years in 1999, but it is unknown whether CA-MRSA subsequently has affected NLEC incidence...
July 8, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28694104/antimicrobial-natural-product-research-a-review-from-a-south-african-perspective-for-the-years-2009-2016
#4
REVIEW
S Van Vuuren, D Holl
ETHNOPHARMACOLOGICAL RELEVANCE: This review provides information on the antimicrobial research which has taken place on South African natural products for the last eight years (2009-2016). This important field is the backbone of all studies involving the use of medicinal plants against infectious diseases and hence can form the mainstay for future studies. MATERIALS AND METHODS: All publications within the years 2009-2016 were considered. Exclusion criteria were studies not involving South African medicinal natural products and those publications where full articles could not be accessed...
July 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28691491/peptidoglycan-cross-linking-preferences-of-staphylococcus-aureus-penicillin-binding-proteins-have-implications-for-treating-mrsa-infections
#5
Veerasak Srisuknimit, Yuan Qiao, Kaitlin Schaefer, Daniel Kahne, Suzanne Walker
Methicillin-resistant Staphylococcus aureus (MRSA) infections are a global public health problem. MRSA strains have acquired a non-native penicillin-binding protein called PBP2a that cross-links peptidoglycan when the native S. aureus PBPs are inhibited by β-lactams. It has been proposed that the native S. aureus PBPs can use cell wall precursors having different glycine branch lengths (penta-, tri-, or monoglycine), while PBP2a can only cross-link peptidoglycan strands bearing a complete pentaglycine branch...
July 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28691027/hand-hygiene-practices-and-microbial-investigation-of-hand-contact-swab-among-physiotherapists-in-an-ebola-endemic-region-implications-for-public-health
#6
S Ibeneme, V Maduako, G C Ibeneme, A Ezuma, T U Ettu, N F Onyemelukwe, D Limaye, G Fortwengel
BACKGROUND: Hand hygiene practices (HHP), as a critical component of infection prevention/control, were investigated among physiotherapists in an Ebola endemic region. METHOD: A standardized instrument was administered to 44 randomly selected physiotherapists (23 males and 21 females), from three tertiary hospitals in Enugu, Nigeria. Fifteen participants (aged 22-59 years) participated in focus group discussions (FGDs) and comprised 19 participants in a subsequent laboratory study...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28683164/optimization-of-pma-qpcr-for-staphylococcus-aureus-and-determination-of-viable-bacteria-in-indoor-air
#7
Ching-Wen Chang, Meng-Hsuan Lin
Staphylococcus aureus may cause infections in humans from mild skin disorders to lethal pneumonia. Rapid and accurate monitoring of viable S. aureus is essential to characterize human exposure. This study evaluated quantitative PCR (qPCR) with propidium monoazide (PMA) to quantify S. aureus. The results showed comparable S. aureus counts between exclusively live cells and mixtures of live/dead cells by qPCR with 1.5 or 2.3 μg/mL PMA (P>0.05), illustrating the ability of PMA-qPCR to detect DNA exclusively from viable cells...
July 6, 2017: Indoor Air
https://www.readbyqxmd.com/read/28682145/a-link-between-osteomyelitis-and-il1rn-and-il1b-polymorphisms-a-study-in-patients-from-northeast-brazil
#8
Clinio Alves De Souza, Argos Queiroz Alves De Souza, Maria do Socorro Queiroz Alves De Souza, José Alberto Dias Leite, Maíra Silva De Morais, Sílvia Helena Barem Rabenhorst
Background and purpose - Treatment failure of osteomyelitis can result from genetic susceptibility, highlighting polymorphisms of the interleukin-1 (IL-1) family members, central mediators of innate immunity and inflammation. Polymorphisms are DNA sequence variations that are common in the population (1% or more) and represent multiple forms of a single gene. We investigated the association of IL1RNVNTR (rs2234663) and IL1B-511C > T (rs16944) polymorphisms with osteomyelitis development in patients operated on because of bone trauma...
July 6, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28671150/emerging-trends-of-nosocomial-pneumonia-in-intensive-care-unit-of-a-tertiary-care-public-teaching-hospital-in-western-india
#9
Rakesh Bhadade, Minal Harde, Rosemarie deSouza, Ashwini More, Ramesh Bharmal
BACKGROUND: Nosocomial pneumonia poses great challenge to an intensivist. Detailed information about hospital-acquired pneumonia (HAP) and ventilator-acquired pneumonia (VAP) is crucial for prevention and optimal management, thus improving quality Intensive Care Unit (ICU) care. Hence, we aimed to study the current trend of nosocomial pneumonia in ICU. MATERIALS AND METHODS: It was a prospective observational cohort study, conducted in the ICU of a tertiary care teaching public hospital over a period of 18 months...
July 2017: Annals of African Medicine
https://www.readbyqxmd.com/read/28660459/plant-derived-antimicrobials-to-fight-against-multi-drug-resistant-human-pathogens
#10
REVIEW
Ramesh Subramani, Mathivanan Narayanasamy, Klaus-D Feussner
Antibiotic resistance is becoming a pivotal concern for public health that has accelerated the search for new antimicrobial molecules from nature. Numbers of human pathogens have inevitably evolved to become resistant to various currently available drugs causing considerable mortality and morbidity worldwide. It is apparent that novel antibiotics are urgently warranted to combat these life-threatening pathogens. In recent years, there have been an increasing number of studies to discover new bioactive compounds from plant origin with the hope to control antibiotic-resistant bacteria...
July 2017: 3 Biotech
https://www.readbyqxmd.com/read/28655675/emergence-and-spread-of-antibiotic-resistance-in-west-africa%C3%A2-contributing-factors-and-threat-assessment
#11
A S Ouedraogo, H Jean Pierre, A L Bañuls, R Ouédraogo, S Godreuil
The emergence and spread of antibiotic resistance present a major public health issue in both developed (DC) and less developed countries (LDC). Worldwide, its main cause is the uncontrolled and unjustified use of antibiotics. In countries with limited resources, such as West African nations, other features, more specifically socioeconomic and behavioral factors, contribute to exacerbate this problem. The objective of this review is to give an update of the common and specific factors involved in the amplification of antibiotic resistance phenomena in LCD, particularly in West African countries...
June 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28655298/assessment-of-staphylococcus-aureus-along-milk-value-chain-and-its-public-health-importance-in-sebeta-central-oromia-ethiopia
#12
Yodit Ayele, Fanta Desissa Gutema, Bedaso Mamo Edao, Robel Girma, Takele Beyene Tufa, Tariku Jibat Beyene, Fanos Tadesse, Mesula Geloye, Ashenafi Feyisa Beyi
BACKGROUND: Staphylococcus aureus is one of the leading causes of gastroenteritis acquired from contaminated foods such as milk and milk products. However, such information is limited in Ethiopia. A cross-sectional study was conducted to assess the contamination of milk with S. aureus and knowledge, attitudes and practices (KAP) of actors along the milk value chain in Sebeta, Central Oromia, Ethiopia. A total of 291 samples collected from dairy farms, milk collection centers (MCCs) and processing plant were examined using standard microbiological techniques...
June 27, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28654270/ultralong-hydroxyapatite-nanowires-based-paper-co-loaded-with-silver-nanoparticles-and-antibiotic-for-long-term-antibacterial-benefit
#13
Zhi-Chao Xiong, Zi-Yue Yang, Ying-Jie Zhu, Fei-Fei Chen, Yong-Gang Zhang, Ri-Long Yang
Hydroxyapatite is a kind of biocompatible, environmentally friendly, and versatile inorganic biomaterial. Herein, the preparation of ultralong hydroxyapatite nanowires (HAPNWs)-based antibacterial paper co-loaded with silver nanoparticles (AgNPs) and antibiotic is reported. HAPNWs are used to prepare AgNPs in situ using an aqueous solution containing AgNO3 under the sunlight without added reducing agent at room temperature. Subsequently, ciprofloxacin (CIP) as an antibiotic is loaded on the HAPNWs@AgNPs. The resultant HAPNWs@AgNPs-CIP paper possesses several unique properties, including high flexibility, high Brunauer-Emmett-Teller (BET) specific surface area (47...
July 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28653923/kitchen-phytochemicals-from-allium-cepa-their-role-in-multidrug-resistance
#14
Gunpreet Kaur, Vikas Gupta, Ajay Francis Christopher, Renu Bansal, Parveen Bansal
Bacterial resistance to antibiotics is increasingly becoming a concern to public health. Current antibiotics have failed to bring desirable results to many bacterial infections due to multi-resistant strains. So, concerted efforts are being made to curve this with the help of dietary phytohemicals. A number of dietary phytochemical are being put to trials for antimicrobial activity; however it is worthwhile to search such a part of diet that is very frequently used by major population. Keeping this view in mind an effort has been made to evaluate the antimicrobial activity of most common vegetable component Allium cepa...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28653916/biological-activities-of-allium-sativum-and-zingiber-officinale-extracts-on-clinically-important-bacterial-pathogens-their-phytochemical-and-ft-ir-spectroscopic-analysis
#15
Uzma Azeem Awan, Shaukat Ali, Amna Mir Shahnawaz, Irsa Shafique, Atiya Zafar, Muhammad Abdul Rauf Khan, Tahseen Ghous, Azhar Saleem, Saiqa Andleeb
The spread of bacterial infectious diseases is a major public threat. Herbs and spices have offered an excellent, important and useful source of antimicrobial agents against many pathological infections. In the current study, the antimicrobial potency of fresh, naturally and commercial dried Allium sativum and Zingiber officinale extracts had been investigated against seven local clinical bacterial isolates such as Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Staphylococcus aureus, Streptococcus pyogenes, Staphylococcus epidermidis, and Serratia marcesnces by the agar disc diffusion method...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28649415/unexplored-diversity-and-strain-level-structure-of-the-skin-microbiome-associated-with-psoriasis
#16
Adrian Tett, Edoardo Pasolli, Stefania Farina, Duy Tin Truong, Francesco Asnicar, Moreno Zolfo, Francesco Beghini, Federica Armanini, Olivier Jousson, Veronica De Sanctis, Roberto Bertorelli, Giampiero Girolomoni, Mario Cristofolini, Nicola Segata
Psoriasis is an immune-mediated inflammatory skin disease that has been associated with cutaneous microbial dysbiosis by culture-dependent investigations and rRNA community profiling. We applied, for the first time, high-resolution shotgun metagenomics to characterise the microbiome of psoriatic and unaffected skin from 28 individuals. We demonstrate psoriatic ear sites have a decreased diversity and psoriasis is associated with an increase in Staphylococcus, but overall the microbiomes of psoriatic and unaffected sites display few discriminative features at the species level...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28645883/the-first-nationwide-surveillance-of-antibacterial-susceptibility-patterns-of-pathogens-isolated-from-skin-and-soft-tissue-infections-in-dermatology-departments-in-japan
#17
Shinichi Watanabe, Takamitsu Ohnishi, Akira Yuasa, Hiroshi Kiyota, Satoshi Iwata, Mitsuo Kaku, Akira Watanabe, Junko Sato, Hideaki Hanaki, Motomu Manabe, Tamio Suzuki, Fujio Otsuka, Michiko Aihara, Ken Iozumi, Takeshi Tamaki, Yuichi Funada, Mikio Shinozaki, Motoko Kobayashi, Masaru Okuda, Go Kikyo, Kumi Kikuchi, Yoshitane Okada, Masanori Takeshima, Osamu Kaneko, Natsuki Ogawa, Rie Ito, Ryuhei Okuyama, Shinji Shimada, Tadamichi Shimizu, Naohito Hatta, Maeda Manabu, Kiyohiro Tsutsui, Toshihiro Tanaka, Yoshiki Miyachi, Hideo Asada, Fukumi Furukawa, Ichiro Kurokawa, Keiji Iwatsuki, Michihiro Hide, Masahiko Muto, Osamu Yamamoto, Hiroyuki Niihara, Kenji Takagaki, Yasuo Kubota, Koji Sayama, Shigetoshi Sano, Masutaka Furue, Takuro Kanekura
To investigate the trends of antimicrobial resistance in pathogens isolated from skin and soft-tissue infections (SSTI) at dermatology departments in Japan, a Japanese surveillance committee conducted the first nationwide survey in 2013. Three main organisms were collected from SSTI at 30 dermatology departments in medical centers and 10 dermatology clinics. A total of 860 strains - 579 of Staphylococcus aureus, 240 of coagulase-negative Staphylococci, and 41 of Streptococcus pyogenes - were collected and shipped to a central laboratory for antimicrobial susceptibility testing...
August 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28634338/coumarin-benzimidazole-hybrids-as-a-potent-antimicrobial-agent-synthesis-and-biological-elevation
#18
L Ravithej Singh, Srinivasa Rao Avula, Sneha Raj, Akanksha Srivastava, Gopala Reddy Palnati, C K M Tripathi, Mukesh Pasupuleti, Koneni V Sashidhara
Molecular hybridization approach is an emerging tool in drug discovery for designing new pharmacophores with biological activity. A novel, new series of coumarin-benzimidazole hybrids were designed, synthesized and evaluated for their broad spectrum antimicrobial activity. Among all the synthesized molecules, compound (E)-3-(2-1H-benzo[d]imidazol-1-yl)-1-((4-chlorobenzyl)oxy)imino)ethyl)-2H-chromen-2-one showed the most promising broad spectrum antibacterial activity against Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis and Proteus vulgaris...
June 21, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28633319/immunotherapy-targeting-adenosine-synthase-a-decreases-severity-of-staphylococcus-aureus-infection-in-mouse-model
#19
Bao-Zhong Zhang, JianPiao Cai, Bin Yu, Lifeng Xiong, Qiubin Lin, Xiao-Yan Yang, Chen Xu, SongYue Zheng, Richard Yi-Tsun Kao, Konghung Sze, Kwok-Yung Yuen, Jian-Dong Huang
Staphylococcus aureus (S. aureus) is a severe pathogen found in the community and in hospitals. Most notably, Methicillin-resistant S. aureus (MRSA) is resistant to almost all antibiotics, which is a growing public health concern. The emergence of drug-resistant strains has prompted the search for alternative treatments such as immunotherapeutic approaches. Previous research showed that S. aureus exploit the immunomodulatory attributes of adenosine to escape host immunity. In this study, we investigated adenosine synthase A (AdsA), a S...
June 13, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28610560/prevalence-and-molecular-characteristics-of-staphylococcus-aureus-including-methicillin-resistant-strains-isolated-from-bulk-can-milk-and-raw-milk-products-in-pastoral-communities-of-south-west-uganda
#20
Benon B Asiimwe, Rossella Baldan, Alberto Trovato, Daniela M Cirillo
BACKGROUND: Staphylococcus aureus strains are now regarded as zoonotic agents. In pastoral settings where human-animal interaction is intimate, multi-drug resistant microorganisms have become an emerging zoonotic issue of public health concern. The study of S. aureus prevalence, antimicrobial resistance and clonal lineages in humans, animals and food in African settings has great relevance, taking into consideration the high diversity of ethnicities, cultures and food habits that determine the lifestyle of the people...
June 13, 2017: BMC Infectious Diseases
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