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Antibiotics supply

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https://www.readbyqxmd.com/read/28098952/solving-the-puzzle-of-one-carbon-loss-in-ripostatin-biosynthesis
#1
Chengzhang Fu, David Auerbach, Yanyan Li, Ullrich Scheid, Eva Luxenburger, Ronald Garcia, Herbert Irschik, Rolf Müller
Ripostatin is a promising antibiotic that inhibits RNA polymerase by binding to a novel binding site. In this study, the characterization of the biosynthetic gene cluster of ripostatin, which is a peculiar polyketide synthase (PKS) hybrid cluster encoding cis- and trans-acyltransferase PKS genes, is reported. Moreover, an unprecedented mechanism for phenyl acetic acid formation and loading as a starter unit was discovered. This phenyl-C2 unit is derived from phenylpyruvate (phenyl-C3) and the mechanism described herein explains the mysterious loss of one carbon atom in ripostatin biosynthesis from the phenyl-C3 precursor...
January 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28087782/mutation-supply-and-relative-fitness-shape-the-genotypes-of-ciprofloxacin-resistant-escherichia-coli
#2
Douglas L Huseby, Franziska Pietsch, Gerrit Brandis, Linnéa Garoff, Angelica Tegehall, Diarmaid Hughes
Ciprofloxacin is an important antibacterial drug targeting Type II topoisomerases, highly active against Gram-negatives including Escherichia coli The evolution of resistance to ciprofloxacin in E. coli always requires multiple genetic changes, usually including mutations affecting two different drug target genes, gyrA and parC Resistant mutants selected in vitro or in vivo can have many different mutations in target genes and efflux regulator genes that contribute to resistance. Among resistant clinical isolates the genotype, gyrA S83L D87N, parC S80I is significantly overrepresented suggesting that it has a selective advantage...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28081583/-early-results-of-adjuvant-topical-treatment-of-recurrent-osteomyelitis-with-absorbable-antibiotic-carriers
#3
Y Gramlich, G Walter, J Gils, R Hoffmann
Background Treatment of musculoskeletal infections principally consists of radical surgical debridement and systemic administration of antibiotics. Additional local antibiotic therapy is not yet generally established, and lacks evidence-based proof of efficacy. Nonetheless, there are a variety of practical approaches, as most specialised departments are unwilling to forego this option. The established polymethylmetacrylate (PMMA) carrier system has a number of practical disadvantages. This has led to the increased use of absorbable carrier systems, and those based on calcium sulphate have given particularly encouraging results...
January 12, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28077074/single-and-multiple-viral-respiratory-infections-in-children-disease-and-management-cannot-be-related-to-a-specific-pathogen
#4
Jérôme O Wishaupt, Tjeerd van der Ploeg, Ronald de Groot, Florens G A Versteegh, Nico G Hartwig
BACKGROUND: The number of viral pathogens associated with pediatric acute respiratory tract infection (ARI) has grown since the introduction of reverse transcription real-time polymerase chain reaction (RT-PCR) assays. Multiple viruses are detected during a single ARI episode in approximately a quarter of all cases. The clinical relevance of these multiple detections is unclear, as is the role of the individual virus. We therefore investigated the correlation between clinical data and RT-PCR results in children with single- and multiple viral ARI...
January 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28063101/elimination-and-molecular-identification-of-endophytic-bacterial-contaminants-during-in-vitro-propagation-of-bambusa-balcooa
#5
Syandan Sinha Ray, Md Nasim Ali, Shibasis Mukherjee, Gautam Chatterjee, Maitreyi Banerjee
Bambusa balcooa is an economically important, multipurpose bamboo species, decidedly used in construction industry. Availability of natural bamboo is depleting very rapidly due to accelerated deforestation and its unrestrained use. The large number and timely supply of saplings are the need of the hour for the restoration of bamboo stands. Micropropagation, being the potent alternative for season independent rapid regeneration, is restricted in bamboo because of endophytic contamination. An in vitro attempt has been taken to overcome the endophytic contamination by using broad spectrum antibiotics as surface sterilant as well as a media component...
February 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28034757/vancomycin-pre-treatment-impairs-tissue-healing-in-experimental-colitis-importance-of-innate-lymphoid-cells
#6
Di Zhao, Chenwen Cai, Qing Zheng, Shuang Jin, Dongjuan Song, Jun Shen, Zhihua Ran
BACKGROUND AND AIMS: The interplay between luminal microbes and innate immunity during colonic epithelial repair has been well noted. At the same time, antibiotic has widely been used during flare-ups of ulcerative colitis. The possible effects of luminal microbiota disruption caused by antibiotics usage on epithelial repairing have been scarcely discussed. Innate lymphoid cells (ILCs) embedded in the lamina propria can be modulated by gut microbes, resulting in altered colonic IL-22/pSTAT3 levels, which is considered a prominent molecular axis in tissue repairing after epithelium damage...
December 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28018590/use-of-asian-selected-agricultural-byproducts-to-modulate-rumen-microbes-and-fermentation
#7
REVIEW
Yasuo Kobayashi, Seongjin Oh, Htun Myint, Satoshi Koike
In the last five decades, attempts have been made to improve rumen fermentation and host animal nutrition through modulation of rumen microbiota. The goals have been decreasing methane production, partially inhibiting protein degradation to avoid excess release of ammonia, and activation of fiber digestion. The main approach has been the use of dietary supplements. Since growth-promoting antibiotics were banned in European countries in 2006, safer alternatives including plant-derived materials have been explored...
2016: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28012119/antibiotic-treatment-of-women-with-uncomplicated-cystitis-before-and-after-allowing-pharmacist-supply-of-trimethoprim
#8
Natalie J Gauld, Irene S L Zeng, Rosemary B Ikram, Mark G Thomas, Stephen A Buetow
Background In 2012, New Zealand reclassified trimethoprim to allow specially trained pharmacists to supply it without a prescription to women with symptoms suggesting uncomplicated cystitis, under strict criteria for supply. Objective To assess how this policy change allowing pharmacist supply of trimethoprim affected overall antibiotic supply. Setting Randomly selected community pharmacies throughout New Zealand. Methods Data were collected in pharmacies before the implementation ('baseline') and 1 year later ('post-implementation')...
December 23, 2016: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/27990628/action-plans-with-brief-patient-education-for-exacerbations-in-chronic-obstructive-pulmonary-disease
#9
REVIEW
Maxwell Howcroft, E Haydn Walters, Richard Wood-Baker, Julia Ae Walters
BACKGROUND: Exacerbations of chronic obstructive pulmonary disease (COPD) are a major driver of decline in health status and impose high costs on healthcare systems. Action plans offer a form of self-management that can be delivered in the outpatient setting to help individuals recognise and initiate early treatment for exacerbations, thereby reducing their impact. OBJECTIVES: To compare effects of an action plan for COPD exacerbations provided with a single short patient education component and without a comprehensive self-management programme versus usual care...
19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27990309/a-case-of-periodontal-necrosis-following-embolization-of-maxillary-artery-for-epistaxis
#10
Kohei Nishimoto, Ryosei Minoda, Ryoji Yoshida, Toshinori Hirai, Eiji Yumoto
Embolization of the maxillary artery (MA) is a common treatment modality for refractory epistaxis. Tissue necrosis after embolization of the MA is a rare complication. Here, we reported the first case of the development of necrosis of soft tissue and alveolar bone in the periodontium after embolization. A 48-year-old man with poor oral hygiene and a heavy smoking habit was referred to our clinic due to intractable epistaxis. After treatment with anterior-posterior nasal packing (AP nasal packing), the epistaxis relapsed...
2016: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/27989755/oxidatively-generated-damage-to-dna-and-proteins-mediated-by-photosensitized-uva
#11
Reto Brem, Melisa Guven, Peter Karran
UVA accounts for about 95% of the solar ultraviolet (UV) radiation that reaches Earth and most likely contributes to human skin cancer risk. In contrast to UVB, which comprises the remaining 5% and is absorbed by DNA nucleobases to cause direct photodamage, UVA damages DNA indirectly. It does this largely through its interactions with cellular chromophores that act as photosensitisers to generate reactive oxygen species. Exogenously supplied chemicals, including some widely-prescribed medicines, may also act as photosensitisers and these drugs are associated with an increased risk of sun-related cancer...
October 27, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27956780/benefits-of-pomegranate-punica-granatum-linn-fruit-extracts-to-weight-changes-total-protein-and-uric-acid-in-white-rats-rattus-norvegicus-as-an-animal-model-of-acute-renal-failure
#12
Hardany Primarizky, Wiwik Misaco Yuniarti, Bambang Sektiari Lukiswanto
AIM: The occurrence of acute renal failure (ARF) cases continues to increase every year. Some of the cases are due to nephrotoxic effect caused by overdose of antibiotic consumption or abuse of the drug, gentamicin. An antibiotic therapy that can be used to overcome in such a case is the pomegranate extracts. However, until now, studies using pomegranate for cases of ARF have not been done. This study aims to determine changes in body weight, the levels of total protein (TP), and the levels of serum uric acid (UA) as a result of the pomegranate extract consumption...
November 2016: Veterinary World
https://www.readbyqxmd.com/read/27870044/foliar-bacteria-and-soil-fertility-mediate-seedling-performance-a-new-and-cryptic-dimension-of-niche-differentiation
#13
Eric A Griffin, M Brian Traw, Peter J Morin, Jonathan N Pruitt, S Joseph Wright, Walter P Carson
The phyllosphere (comprising the leaf surface and interior) is one of the world's largest microbial habitats and is host to an abundant and diverse array of bacteria. Nonetheless, the degree to which bacterial communities are benign, harmful, or beneficial to plants in situ is unknown. We tested the hypothesis that the net effect of reducing bacterial abundance and diversity would vary substantially among host species (from harmful to beneficial) and this would be strongly mediated by soil resource availability...
November 2016: Ecology
https://www.readbyqxmd.com/read/27848173/assessing-pharmacists-readiness-to-prescribe-oral-antibiotics-for-limited-infections-using-a-case-vignette-technique
#14
Elizabeth Ung, Petra Czarniak, Bruce Sunderland, Richard Parsons, Kreshnik Hoti
Background Pharmacist's skills are underutilized whilst they are directly involved with antibiotic supply to the community. Addressing this issue could lead to better use of antibiotics and hence decreased resistance. Objective Explore how pharmacists can prescribe oral antibiotics to treat a limited range of infections whilst focusing on their confidence and appropriateness of prescribing. Setting Community pharmacies, Western Australia. Method Data were collected using a self-administered questionnaire also containing case vignettes...
November 15, 2016: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/27836999/quality-of-child-healthcare-at-primary-healthcare-facilities-a-national-assessment-of-the-integrated-management-of-childhood-illnesses-in-afghanistan
#15
Ghulam Farooq Mansoor, Paata Chikvaidze, Sherin Varkey, Ariel Higgins-Steele, Najibullah Safi, Adela Mubasher, Khaksar Yusufi, Sayed Alisha Alawi
OBJECTIVE: To assess quality of the national Integrated Management of Childhood Illness (IMCI) program services provided for sick children at primary health facilities in Afghanistan. DESIGN: Mixed methods including cross-sectional study. SETTING: Thirteen (of thirty-four) provinces in Afghanistan. PARTICIPANTS: Observation of case management and re-examination of 177 sick children, exit interviews with caretakers and review of equipment/supplies at 44 health facilities...
November 10, 2016: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/27832404/pharmacist-only-trimethoprim-pharmacist-satisfaction-on-their-training-and-the-impact-on-their-practice
#16
Rhiannon Braund, Emily Henderson, Erica McNab, Rachel Sarten, Emily Wallace, Natalie Gauld
Background In 2012, in a first for the developed world, New Zealand reclassified trimethoprim to allow specially trained pharmacists to supply the medicine without a prescription to women with cystitis fitting specific criteria. Objective This study explored pharmacists' views of the training and screening tool, impact on practice, and the pharmacists' perceptions of views of patients and doctors. Methods Structured interviews were conducted with 28 New Zealand pharmacists trained to supply trimethoprim. These pharmacists were selected to represent geographical spread as well as urban, suburban and rural...
December 2016: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/27826018/analysis-of-pcerc7-a-small-antibiotic-resistance-plasmid-from-a-commensal-st131-escherichia-coli-defines-a-diverse-group-of-plasmids-that-include-various-segments-adjacent-to-a-multimer-resolution-site-and-encode-the-same-nika-relaxase-accessory-protein-enabling
#17
Robert A Moran, Ruth M Hall
The ampicillin resistance plasmid pCERC7, carrying transposon Tn2 with an IS4 insertion, was detected in the draft genome of a commensal Escherichia coli isolate. The genome data also revealed that this isolate belongs to ST131, clade B. pCERC7 is 9712bp comprised of a 3319bp backbone, Tn2::IS4 (6388bp) and 5bp of target site duplication, and was present at a copy number of 40. pCERC7 is related to several plasmids composed of only the backbone, or the backbone with the Tn2 insertion in the same position. These plasmids have been found previously in Escherichia coli or Salmonella enterica recovered in several different countries from as early as the 1970s...
November 4, 2016: Plasmid
https://www.readbyqxmd.com/read/27817759/status-of-the-prevention-of-multidrug-resistant-organisms-in-international-settings-a-survey-of-the-society-for-healthcare-epidemiology-of-america-research-network
#18
Nasia Safdar, Sharmila Sengupta, Jackson S Musuuza, Manisha Juthani-Mehta, Marci Drees, Lilian M Abbo, Aaron M Milstone, Jon P Furuno, Meera Varman, Deverick J Anderson, Daniel J Morgan, Loren G Miller, Graham M Snyder
OBJECTIVE To examine self-reported practices and policies to reduce infection and transmission of multidrug-resistant organisms (MDRO) in healthcare settings outside the United States. DESIGN Cross-sectional survey. PARTICIPANTS International members of the Society for Healthcare Epidemiology of America (SHEA) Research Network. METHODS Electronic survey of infection control and prevention practices, capabilities, and barriers outside the United States and Canada. Participants were stratified according to their country's economic development status as defined by the World Bank as low-income, lower-middle-income, upper-middle-income, and high-income...
November 7, 2016: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/27809768/comparison-of-antibiotic-resistant-escherichia-coli-obtained-from-drinking-water-sources-in-northern-tanzania-a-cross-sectional-study
#19
Beatus Lyimo, Joram Buza, Murugan Subbiah, Woutrina Smith, Douglas R Call
BACKGROUND: Antimicrobial resistance (AMR) is a growing and significant threat to public health on a global scale. Escherichia coli comprises Gram-negative, fecal-borne pathogenic and commensal bacteria that are frequently associated with antibiotic resistance. AMR E. coli can be ingested via food, water and direct contact with fecal contamination. METHODS: We estimated the prevalence of AMR Escherichia coli from select drinking water sources in northern Tanzania...
November 3, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27789268/prevalence-of-surgical-site-infections-following-orthognathic-surgery-a-double-blind-randomized-controlled-trial-on-a-3-day-versus-1-day-postoperative-antibiotic-regimen
#20
Clayton M Davis, Curtis E Gregoire, Ian Davis, Thomas W Steeves
PURPOSE: The purpose of this study was to determine the effect of a 3- versus 1-day antibiotic regimen on the rate of surgical site infection (SSI) in patients undergoing orthognathic surgery at a department of oral and maxillofacial surgery in Halifax, Nova Scotia, Canada. MATERIALS AND METHODS: A prospective, randomized controlled trial was conducted. All patients received 1 day of intravenous antibiotics after surgery. Then, patients were randomly distributed into groups that received 2 days of additional antibiotics (group A) or placebo (group B)...
October 3, 2016: Journal of Oral and Maxillofacial Surgery
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