Medical News Today: 'Antibacterial' chemical in toothpaste could strengthen bacteria

New research finds that triclosan, a compound that is in many consumer products, could make the bacteria it is supposed to kill stronger.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: MRSA / Drug Resistance Source Type: news

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Healthcare-associated infections (HAIs) continue to be an ongoing threat to patients. “Despite the best care, patients get infections,” Brian Gross, business lead, genomics for infectious disease at Philips, told MD+DI. Because they are “technically avoidable, there’s pressure on hospitals to drive their numbers down.” Healthcare system professionals have struggled with two main problems when trying to identify and act on infection risks, Gross explained. “The problem is two-fold. First, because of current tools, all...
Source: MDDI - Category: Medical Devices Authors: Tags: Software Source Type: news
Publication date: Available online 16 July 2019Source: American Journal of Infection ControlAuthor(s): Shanice Cheatham, Dipendra Thapaliya, Mohammed Taha, Katherine Milliken, Mark R. Dalman, Jhalka Kadariya, Dylan Grenier, Tara C. SmithBackgroundMethicillin-resistant Staphylococcus aureus (MRSA) is common in medical institutions. We sought to examine the prevalence of S aureus on environmental surfaces in nursing homes and to obtain molecular information on contaminating strains.MethodsA total of 259 environmental samples were collected from 7 different nursing homes in Northeast Ohio (NEO), from suburban, urban, and rura...
Source: American Journal of Infection Control - Category: Infectious Diseases Source Type: research
ConclusionData collected from a non-outbreak setting suggest the presence of different clones of MRSA from nasal swabs of HCWs belonging to the Department of Pediatrics and Surgery. The data collected by this study can be used as reference for other succeeding studies on the surveillance of MRSA among HCWs.
Source: Journal of Microbiology, Immunology and Infection - Category: Microbiology Source Type: research
Antimicrobial drug discovery against drug-resistant bacteria is an urgent need. Beyond agents with direct antibacterial activity, anti-virulent molecules may also be viable compounds to defend against bacterial pathogenesis. Using a high throughput screen (HTS) that utilized, Caenorhabditis elegans infected with methicillin-resistant Staphylococcus aureus (MRSA) strain of MW2, we identified 4-(1,3-dimethyl-2,3-dihydro-1H-benzimidazol-2-yl)phenol (BIP). Interestingly, BIP had no in vitro inhibition activity against MW2, at least up to 64 µg/mL. The lack of direct antimicrobial activity suggests that BIP could inhibit ...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In conclusion, we have designed a set of new LL-37 peptides with varying antimicrobial activities, opening the door to potential topical treatment of infections involving different drug-resistant pathogens.Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) Biomembranes - Category: Biochemistry Source Type: research
Khaled M. A. Elzorkany, Asmaa M Elbrolosy, Eman H SalemIndian Journal of Nephrology 2019 29(4):282-287 Hemodialysis (HD) patients are at risk for developing serious infections. Methicillin- resistant Staphylococcus aureus (MRSA) is one of the most prevalent pathogens in healthcare facilities with a major threat to the medical community. We aimed to determine the prevalence of MRSA colonization among patients and medical staff members in a HD Unit and determine efficacy of mupirocin as a decolonizing agent. This cross-sectional study enrolled 250 patients and 35 health care providers of a HD unit. Nasal and hand swabs were...
Source: Indian Journal of Nephrology - Category: Urology & Nephrology Authors: Source Type: research
Methicillin-resistant Staphylococcus aureus (MRSA) is a primarily nosocomial pathogen that, in recent years, has increasingly spread to the general population. The rising prevalence of MRSA in the community implies more frequent introductions in healthcare settings that could jeopardize the effectiveness of infection-control procedures. To investigate the epidemiological dynamics of MRSA...
Source: Proceedings of the National Academy of Sciences - Category: Science Authors: Tags: PNAS Plus Source Type: research
In this study, we investigated the nature of the cell wall defect in the msaABCR operon mutant in the Mu50 (VISA) and USA300 LAC methicillin-resistant Staphylococcus aureus (MRSA) strains. Results showed that msaABCR-mutant cells had decreased crosslinking in both strains. This defect is typically due to increased murein hydrolase activity and/or nonspecific processing of murein hydrolases mediated by increased protease activity in mutant cells. The defect was enhanced by a decrease in teichoic acid content in the msaABCR mutant. Therefore, we propose that deletion of the msaABCR operon results in decreased peptidoglycan c...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research
Abstract Frigocyclinone is a novel antibiotic with antibacterial and anticancer activities. It is produced by both Antarctica-derived Streptomyces griseus NTK 97 and marine sponge-associated Streptomyces sp. M7_15. Here, we first report the biosynthetic gene cluster of frigocyclinone in the S. griseus NTK 97. The frigocyclinone gene cluster spans a DNA region of 33-kb which consists of 30 open reading frames (ORFs), encoding minimal type II polyketide synthase, aromatase and cyclase, redox tailoring enzymes, sugar biosynthesis-related enzymes, C-glycosyltransferase, a resistance protein, and three regulatory prote...
Source: Bioscience, Biotechnology, and Biochemistry - Category: Biochemistry Authors: Tags: Biosci Biotechnol Biochem Source Type: research
AbstractInfections of clinical methicillin-resistantStaphylococcus aureus (MRSA) is a very tough public health problem and a challenge of new drug development. Nearly 90 Diels-Alder adducts (DAAs) have so far been isolated fromMorus plants, but only a few of them have been evaluated for their anti-MRSA activities. To study the antibacterial compounds of DAAs from the root barks ’ section ofMorus alba L. and their synergism with antibacterial agents against clinical MRSA strains, bioassay-guided phytochemical methods were used to screen the active components. Minimal inhibitory concentrations (MICs) and minimal bacter...
Source: Medicinal Chemistry Research - Category: Chemistry Source Type: research
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