Aptasensors for Staphylococcus aureus Risk Assessment in Food

Staphylococcus aureus (S. aureus) is the top ordinary pathogen causing epidemic and food poisoning. The authentication of S. aureus has great significance for pathologic diagnosis and food hygiene supervision. Various biosensor methods have been established for identification. This paper reviews the research progress of aptasensors for S. aureus detection, focusing on the classification of aptamer technologies, including optical aptasensors and electrochemical aptasensors. Furthermore, the feasibility and future challenges of S. aureus detection for aptamer assays are discussed. Combining aptasensors with nanomaterials appears to be the developing trend in aptasensors.
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research

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More than 18 months since COVID-19 first led to lockdowns across the United States, data are beginning to emerge that reveal the harmful effects of the pandemic on some people with eating disorders. Areport appearing in the October issue ofPediatrics describes how the number of children and adolescents admitted for eating disorders at a children ’s hospital in Michigan rose steadily during the first 12 months of the pandemic.“An increase in severely ill adolescents with [eating disorders] during COVID-19 is likely to present challenges for patients, their families, and their providers because demand for treatme...
Source: Psychiatr News - Category: Psychiatry Tags: adolescents anorexia C.S. Mott Children ’s Hospital COVID-19 eating disorders hospital admissions pandemic pediatrics restrictive eating disorders Source Type: research
Chem Commun (Camb). 2021 Oct 26. doi: 10.1039/d1cc05455d. Online ahead of print.ABSTRACTHerein, we report a series of di-anionic supramolecular self-associating amphiphiles (SSAs). We elucidate the antimicrobial properties of these SSAs against both methicillin resistant Staphylococcus aureus and Escherichia coli. In addition, we show this class of compound to form both intra- and intermolecular hydrogen bonded macrocyclic structures in the solid state.PMID:34698738 | DOI:10.1039/d1cc05455d
Source: Chemical Communications - Category: Chemistry Authors: Source Type: research
CONCLUSIONS: Plasma concentrations during the repeated dosing confirmed that the recommended dosing schedule, with and without intermittent hemodialysis, maintained therapeutic concentrations throughout the treatments. Fomepizole elimination in poisoned patients at therapeutic plasma concentrations appears be similar to that reported previously in healthy human subjects.PMID:34697779 | DOI:10.1007/s13181-021-00862-3
Source: Journal of Medical Toxicology - Category: Toxicology Authors: Source Type: research
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Source: AllAfrica News: Health and Medicine - Category: African Health Source Type: news
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Source: AllAfrica News: Health and Medicine - Category: African Health Source Type: news
ConclusionWe found that mcr-bearing COLR-KP emerged in our hospital and was growing at an increasing rate. Simultaneous emergence of hypervirulence and colistin–tigecycline–carbapenem resistance in the epidemic clone ST11 K. pneumoniae was also observed; this highlights the significance of active and continuous surveillance.
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
Conclusions: We present the most detailed genomic analysis of MRSA isolated in Sri Lanka to date. The analysis identified a PVL-positive ST5-MRSA-IVc that is prevalent among MRSA causing clinical infections in Sri Lanka. Furthermore, this clone was also found among isolates from the United Kingdom and Australia. Introduction Worldwide, Staphylococcus aureus is the primary causative agent of community-acquired skin and soft tissue infections (SSTI) and is an important cause of hospital-associated invasive infections including bacteremia, pneumonia and endocarditis (Bell et al., 2002; David and Daum, 2010). Panton-Va...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
This study identified prophages as mediators of bacterial virulence in a model of infectious endocarditis, probably through promotion of interaction with extracellular matrix components. Further studies are needed to identify mechanisms leading to promotion of intrinsic virulence. Introduction Challenges related to Staphylococcus aureus infections in the human and veterinary clinics mobilized important human and technical resources. S. aureus can colonize 20–30% of the general population asymptomatically but is also capable of causing a wide spectrum of diseases ranging from benign infections, to particularly...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
This study aimed to contribute to the need of finding new and more effective bioactive molecules against several of the earlier mentioned threats faced by human kind nowadays. For this, eighteen species from the Actinomycetales previously isolated from Erylus spp. sponges collected in Portuguese marine waters (Açores, Madeira, and continental shelf) were screened for antimicrobial, anti-cancer, anti-parasitic and anti-obesogenic activities. Materials and Methods Biological Material The bacteria under study belong to the order Actinomycetales within the phylum Actinobacteria and were isolated from marine sponges o...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Authors: Coldea IL, Drăgulescu EC, Lixandru BE, Dragomirescu CC, Codiţă I Abstract Although Staphylococcus aureus is frequently reported among the common causative agents of foodborne diseases in Europe, very little is known about the strains involved in staphylococcal food-poisoning outbreaks in our region. Therefore, the aim of this study was to characterize the staphylococcal strains recovered from an autochthonous food-poisoning familial outbreak through phenotypic and genotypic methods. Ten S. aureus strains from food and human sources, submitted to the reference laboratory, were tested for susceptibility t...
Source: Roumanian Archives of Microbiology and Immunology - Category: Microbiology Tags: Roum Arch Microbiol Immunol Source Type: research
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