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https://www.readbyqxmd.com/read/28231175/mushroom-polysaccharides-chemistry-and-antiobesity-antidiabetes-anticancer-and-antibiotic-properties-in-cells-rodents-and-humans
#1
REVIEW
Mendel Friedman
More than 2000 species of edible and/or medicinal mushrooms have been identified to date, many of which are widely consumed, stimulating much research on their health-promoting properties. These properties are associated with bioactive compounds produced by the mushrooms, including polysaccharides. Although β-glucans (homopolysaccharides) are believed to be the major bioactive polysaccharides of mushrooms, other types of mushroom polysaccharides (heteropolysaccharides) also possess biological properties. Here we survey the chemistry of such health-promoting polysaccharides and their reported antiobesity and antidiabetic properties as well as selected anticarcinogenic, antimicrobial, and antiviral effects that demonstrate their multiple health-promoting potential...
November 29, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230771/antibiotic-resistance-determinant-focused-acinetobacter-baumannii-vaccine-designed-using-reverse-vaccinology
#2
Zhaohui Ni, Yan Chen, Edison Ong, Yongqun He
As one of the most influential and troublesome human pathogens, Acinetobacter baumannii (A. baumannii) has emerged with many multidrug-resistant strains. After collecting 33 complete A. baumannii genomes and 84 representative antibiotic resistance determinants, we used the Vaxign reverse vaccinology approach to predict classical type vaccine candidates against A. baumannii infections and new type vaccine candidates against antibiotic resistance. Our genome analysis identified 35 outer membrane or extracellular adhesins that are conserved among all 33 genomes, have no human protein homology, and have less than 2 transmembrane helices...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28229558/microbial-diversity-of-a-full-scale-uasb-reactor-applied-to-poultry-slaughterhouse-wastewater-treatment-integration-of-16s-rrna-gene-amplicon-and-shotgun-metagenomic-sequencing
#3
Tiago Palladino Delforno, Gileno Vieira Lacerda Júnior, Melline F Noronha, Isabel K Sakamoto, Maria Bernadete A Varesche, Valéria M Oliveira
The 16S rRNA gene amplicon and whole-genome shotgun metagenomic (WGSM) sequencing approaches were used to investigate wide-spectrum profiles of microbial composition and metabolic diversity from a full-scale UASB reactor applied to poultry slaughterhouse wastewater treatment. The data were generated by using MiSeq 2 × 250 bp and HiSeq 2 × 150 bp Illumina sequencing platforms for 16S amplicon and WGSM sequencing, respectively. Each approach revealed a distinct microbial community profile, with Pseudomonas and Psychrobacter as predominant genus for the WGSM dataset and Clostridium and Methanosaeta for the 16S rRNA gene amplicon dataset...
February 23, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28226419/evaluation-of-risk-factors-for-clostridium-difficile-infection-in-hematopoietic-stem-cell-transplant-recipients
#4
Tonya L Scardina, Elena Kang Martinez, Neelam Balasubramanian, Mary Fox-Geiman, Scott E Smith, Jorge P Parada
STUDY OBJECTIVES: The primary objective was to determine the impact of hematologic malignancies and/or conditioning regimens on the risk of developing Clostridium difficile infection (CDI) in patients undergoing hematopoietic stem cell transplantation (HSCT). Secondary objectives were to determine if traditional CDI risk factors applied to patients undergoing HSCT and to determine the presence of CDI markers of severity of illness among this patient population. DESIGN: Single-center, retrospective, case-control study...
February 22, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28225903/sphygmomanometers-and-thermometers-as-potential-fomites-of-staphylococcus-haemolyticus-biofilm-formation-in-the-presence-of-antibiotics
#5
Bruna Pinto Ribeiro Sued, Paula Marcele Afonso Pereira, Yuri Vieira Faria, Juliana Nunes Ramos, Vanessa Batista Binatti, Kátia Regina Netto Dos Santos, Sérgio Henrique Seabra, Raphael Hirata, Verônica Viana Vieira, Ana Luíza Mattos-Guaraldi, José Augusto Adler Pereira
BACKGROUND: The association between Staphylococcus haemolyticus and severe nosocomial infections is increasing. However, the extent to which fomites contribute to the dissemination of this pathogen through patients and hospital wards remains unknown. OBJECTIVES: In the present study, sphygmomanometers and thermometers were evaluated as potential fomites of oxacillin-resistant S. haemolyticus (ORSH). The influence of oxacillin and vancomycin on biofilm formation by ORSH strains isolated from fomites was also investigated...
March 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225897/sphygmomanometers-and-thermometers-as-potential-fomites-of-staphylococcus-haemolyticus-biofilm-formation-in-the-presence-of-antibiotics
#6
Bruna Pinto Ribeiro Sued, Paula Marcele Afonso Pereira, Yuri Vieira Faria, Juliana Nunes Ramos, Vanessa Batista Binatti, Kátia Regina Netto Dos Santos, Sérgio Henrique Seabra, Raphael Hirata, Verônica Viana Vieira, Ana Luíza Mattos-Guaraldi, José Augusto Adler Pereira
BACKGROUND: The association between Staphylococcus haemolyticus and severe nosocomial infections is increasing. However, the extent to which fomites contribute to the dissemination of this pathogen through patients and hospital wards remains unknown. OBJECTIVES: In the present study, sphygmomanometers and thermometers were evaluated as potential fomites of oxacillin-resistant S. haemolyticus (ORSH). The influence of oxacillin and vancomycin on biofilm formation by ORSH strains isolated from fomites was also investigated...
February 16, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225198/adjunctive-steroid-therapy-versus-antibiotics-alone-for-acute-endophthalmitis-after-intraocular-procedure
#7
REVIEW
Carole H Kim, Monica F Chen, Anne L Coleman
BACKGROUND: Endophthalmitis refers to severe infection within the eye that involves the aqueous humor or vitreous humor, or both, and threatens vision. Most cases of endophthalmitis are exogenous (i.e. due to inoculation of organisms from an outside source), and most exogenous endophthalmitis is acute and occurs after an intraocular procedure. The mainstay of treatment is emergent administration of broad-spectrum intravitreous antibiotics. Due to their anti-inflammatory effects, steroids in conjunction with antibiotics have been proposed to be beneficial in endophthalmitis management...
February 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28224396/sacral-neuromodulation-implant-infection-risk-factors-and-prevention
#8
REVIEW
Calvin Lee, Javier Pizarro-Berdichevsky, Marisa M Clifton, Sandip P Vasavada
Device infection is one of the most common complications of sacral nerve stimulator placement and occurs in approximately 3-10% of cases. Infection is a serious complication, as it often requires complete explantation of the device. Not much is known regarding risk factors for and methods of preventing infection in sacral nerve stimulation. Multiple risk factors have been linked to device infection including prolonged percutaneous testing and choice of preoperative antibiotic. Methods of infection prevention have also been studied recently, including antibiotic-impregnated collage and type of skin preparation...
February 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28224343/amphotericin-b-increases-transglutaminase-2-expression-associated-with-upregulation-of-endocytotic-activity-in-mouse-microglial-cell-line-bv-2
#9
Kenji Kawabe, Katsura Takano, Mitsuaki Moriyama, Yoichi Nakamura
Amphotericin B (AmB), a polyene antibiotic, is reported to cause the microglial activation to induce nitric oxide (NO) production and proinflammatory cytokines expression, and change neurotrophic factors expression in cultured microglia (Motoyoshi et al. in Neurochem Int 52:1290-1296, 2008). On the other hand, tissue-type transglutaminase (TG2) is involved in connection to phagocytes with apoptotic cells. Engulfment of neurons by activated microglia is thought to cause neurodegenerative diseases but detail is unclear, and involvement of TG2 in phagocytosis has been reported in our previous study using lipopolysaccharide-stimulated BV-2 cells (Kawabe et al...
February 21, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28224028/evaluation-of-antimicrobial-susceptibility-and-integron-carriage-in-helicobacter-pylori-isolates-from-patients
#10
Mehdi Goudarzi, Mohsen Heidary, Mehdi Azad, Maryam Fazeli, Hossein Goudarzi
AIM: The purpose of this study was to determine the antibiotic susceptibility pattern and distribution of integron in H. pylori isolates collected from patients referred to private health care centers in Tehran, Iran. BACKGROUND: Antibiotic resistance is the main reason for failure of Helicobacter pylori therapy. Integrons as genetic reservoirs play main roles in the dissemination of antimicrobial resistance gene. METHODS: During a 12-month cross-sectional study period, 65 H...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28223380/vitamin-k3-induces-the-expression-of-the-stenotrophomonas-maltophilia-smevwx-multidrug-efflux-pump
#11
P Blanco, F Corona, M B Sánchez, J L Martínez
Stenotrophomonas maltophilia is an opportunistic pathogen, with increasing prevalence, able to cause infections in immunocompromised patients or in those with a previous pathology. The treatment of the infections caused by this bacterium is often complicated due to the several intrinsic antibiotic resistance mechanisms that it presents. Multidrug efflux pumps are among the best studied mechanisms of S. maltophilia antibiotic resistance. Some of these efflux pumps have a basal expression level but, in general, their expression is often low and only reaches high levels when the local regulator is mutated or bacteria are in the presence of an effector...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28223377/exopolysaccharide-repressing-small-molecules-with-antibiofilm-and-antivirulence-activity-against-pseudomonas-aeruginosa
#12
Erik van Tilburg Bernardes, Laetitia Charron-Mazenod, David J Reading, Shauna L Reckseidler-Zenteno, Shawn Lewenza
Biofilm formation is a universal virulence strategy in which bacteria grow in dense microbial communities enmeshed within a polymeric extracellular matrix that protects them from antibiotic exposure and the immune system. Pseudomonas aeruginosa is an archetypal biofilm-forming organism that utilizes a biofilm growth strategy to cause chronic lung infections in Cystic Fibrosis (CF) patients. The extracellular matrix of P. aeruginosa biofilms is comprised mainly of exopolysaccharides (EPS) and DNA. Both mucoid and non-mucoid isolates of P...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28223246/physical-key-properties-of-antibiotic-free-plga-hpmc-based-in-situ-forming-implants-for-local-periodontitis-treatment
#13
K Agossa, M Lizambard, T Rongthong, E Delcourt-Debruyne, J Siepmann, F Siepmann
In-situ forming implants (ISFI) offer an interesting potential for the treatment of periodontitis, allowing for time-controlled drug release directly at the site of action (which is difficult to reach). For this purpose, ISFI loaded with antibiotics have been reported in the literature. But the use of antibiotic drugs at low doses over prolonged periods of time can lead to the development of bacterial resistances. This risk should be avoided. The aim of this study was to develop a novel type of in-situ forming implants, loaded with the antiseptic drug chlorhexidine...
February 18, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28221927/characterization-of-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolates-from-pigs-and-farm-workers
#14
Hongna Zhang, Zhenzhen Zhai, Qing Li, Linghong Liu, Shuyuan Guo, Qimeng Li, Lingling Yang, Chaoqun Ye, Weishan Chang, Jing Zhai
Food-producing animals can serve as reservoirs for extended-spectrum β-lactamase (ESBL)-producing Escherichia coli . The present study aimed to characterize and compare ESBL-carrying E. coli isolates from both pigs and farm workers. Rectal swabs were obtained from 60 pigs on four pig-fattening farms (15 samples per farm), and rectal swabs were taken from 40 farm workers on these farms (10 samples per farm). ESBL-carrying E. coli isolates from the workers and pigs were characterized by ESBL genotype, antibiotic susceptibility, enterobacterial repetitive intergenic consensus type, and multilocus sequence type...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221858/genotypic-and-phenotypic-characterization-of-methicillin-resistant-staphylococcus-aureus-isolated-from-bovine-mastitic-milk-in-korea
#15
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/28220755/ribosomal-mutations-promote-the-evolution-of-antibiotic-resistance-in-a-multidrug-environment
#16
James E Gomez, Benjamin B Kaufmann-Malaga, Carl N Wivagg, Peter B Kim, Melanie R Silvis, Nikolai Renedo, Thomas R Ioerger, Rushdy Ahmad, Jonathan Livny, Skye Fishbein, James C Sacchettini, Steven A Carr, Deborah T Hung
Antibiotic resistance arising via chromosomal mutations is typically specific to a particular antibiotic or class of antibiotics. We have identified mutations in genes encoding ribosomal components in Mycobacterium smegmatis that confer resistance to several structurally and mechanistically unrelated classes of antibiotics and enhance survival following heat shock and membrane stress. These mutations affect ribosome assembly and cause large-scale transcriptomic and proteomic changes, including the downregulation of the catalase KatG, an activating enzyme required for isoniazid sensitivity, and upregulation of WhiB7, a transcription factor involved in innate antibiotic resistance...
February 21, 2017: ELife
https://www.readbyqxmd.com/read/28220736/antibiotic-prescription-patterns-of-south-african-general-medical-practitioners-for-treatment-of-acute-bronchitis
#17
N B Q Ncube, G C Solanki, T Kredo, R Lalloo
BACKGROUND: Antibiotic resistance is a significant public health problem. Prudent use of antibiotics is crucial in reducing this resistance. Acute bronchitis is a common reason for consultations with general medical practitioners, and antibiotics are often prescribed even though guidelines recommend not prescribing them for uncomplicated acute bronchitis. OBJECTIVE: To analyse the antibiotic prescription patterns of South African (SA) general medical practitioners in the treatment of acute bronchitis...
January 30, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28220246/treatment-of-open-fractures-of-the-hand-in-the-emergency-department
#18
Nofar Ben Basat, Raviv Allon, Ahmad Nagmi, Ronit Wollstein
Current guidelines suggest early surgical treatment of open fractures. This rule in open hand fractures is not well supported and may be unpractical. Furthermore, desirable debridement and washout can be obtained in the emergency department (ED). The purpose of this study was to evaluate the relationship between the level of contamination, quality of washout in the emergency room, and the development of infection. Sixty-one patients with open fractures of the hand were retrospectively reviewed for demographic and fracture characteristics, and other complications...
February 20, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28220115/spread-of-the-blaoxa-23-containing-tn2008-in-carbapenem-resistant-acinetobacter-baumannii-isolates-grouped-in-cc92-from-china
#19
Yisheng Chen, Jing Gao, Haomin Zhang, Chunmei Ying
The rapid expansion of carbapenem-resistant Acinetobacter baumannii (CRAB) clinical isolates is a big issue. We investigated the antibiotic susceptibility, molecular epidemiology and resistance gene of A. baumannii collected at two hospitals in Shanghai, China. Besides, the A. baumannii PCR-based replicon typing method (AB-PBRT) was conducted to categorize the plasmids into homogeneous groups on the basis of replicase genes. Most CRAB isolates showed high-level resistance to almost all antibiotics but retain susceptibility to colistin and tigecycline...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28219824/characterisation-of-the-first-kpc-2-producing-klebsiella-pneumoniae-st340-from-peru
#20
Gertrudis Horna, Jorge Velasquez, Nathaly Fernández, Jesus Tamariz, Joaquim Ruiz
OBJECTIVES: The aim of this study was to characterise a KPC-carrying Klebsiella pneumoniae isolate from a Peruvian hospital setting. METHODS: The identity of the isolate was confirmed by amplification and sequencing of the 16S rRNA gene, and the antibiotic resistance profile was determined by disk diffusion and automated METHODS: The sequence type (ST) and phylogenetic group were established by PCR. The presence of different β-lactamase genes was determined, including blaMBL, blaKPC, blaCTX-M, blaSHV, blaOXA-1-like, blaOXA-2-like, blaOXA-5-like, blaOXA-48-like and blaTEM and up to six different plasmid-encoded AmpC genes as well as class 1 integrons...
February 17, 2017: Journal of Global Antimicrobial Resistance
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