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259 Current news about the topic toxicity

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Chemicals in the environment: A focus on mixtures

Combined chemical and bioanalytical methods are able to efficiently characterise chemical mixtures

27-Jan-2020

In the past, it was sufficient to identify individual chemicals as the cause of detrimental effects on humans and the environment. But in the meantime, it has become apparent that this approach falls short of the mark. This is because the real world is marked by multiple stressors, among them ...

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More efficient risk assessment for nanomaterials

Researchers analyse biological mechanisms of action and identify biomarkers

17-Dec-2019

Nanotechnology is booming, but risk assessment for these tiny particles is a laborious process that presents significant challenges to the German Federal Institute for Risk Assessment (BfR). To find more efficient test methods, researchers at the Helmholtz Centre for Environmental Research (UFZ) ...

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ECETOC Task Force provides new insights

Toxicity testing of microparticles and poorly soluble liquids in the water environment

15-Jan-2019

A Task Force set up by the European Centre for Ecotoxicology and Toxicology of Chemicals (ECETOC) has provided new insights into scientific testing for the impact of undissolved particles in the aquatic environment. ECETOC launched the Task Force in response to increasing concerns among the ...

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Solar panels for yeast cell biofactories

19-Nov-2018

Genetically engineered microbes such as bacteria and yeasts have long been used as living factories to produce drugs and fine chemicals. More recently, researchers have started to combine bacteria with semiconductor technology that, similar to solar panels on the roof of a house, harvests energy ...

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The tightest non-aminoglycoside ligand for the bacterial ribosomal RNA A-site

17-Oct-2018

A research group at Tohoku University has made a significant discovery with positive implications for the development of bacteria-fighting drugs. The aminoacyl-tRNA site (A-site) of the 16S RNA decoding region in the bacterial ribosome looks promising for a new era of antibiotic drug ...

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Liver-on-a-chip, the ideal test environment for CRISPR

16-Oct-2018

Two Arizona State University professors are among the first recipients ofSomatic Cell Genome Editing (SCGE) grants from the National Institutes of Health Common Fund. The $2,600,000, five-year grant will fund the first study of the genome editing technology CRISPR to be used on a "human liver ...

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Titanium dioxide from sunscreen is polluting beaches

20-Aug-2018

Scientists have found that sunscreen from bathers releases significant quantities of polluting TiO2 (titanium dioxide) into the sea. This has the potential to harm marine life. This work, which comes from research on beaches in the South of France, was presented at the Goldschmidt geochemistry ...

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Toxicity of carbon and silicon nanotubes and carbon nanofibers

20-Jul-2018

Nanoparticles with a wide range of applying, including medicine, damage cells of microalgae Heterosigma akashivo badly. This algae species is widely spread in the Russian Far East marine area. The acute toxic effect exhibited at concentrations of 100 mg/l of carbon nanotubes (CNTs) and silicon ...

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Bacteria can 'divide and conquer' to vanquish their enemies

04-Jul-2018

Some bacteria can release toxins that provoke their neighbours into attacking each other, a tactic that could be exploited to fight infections. Bacteria often engage in 'warfare' by releasing toxins or other molecules that damage or kill competing strains. This war for resources occurs in most ...

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Computers outperform lab rats in detecting toxic chemicals

19-Feb-2018

UL, the science safety company, and Johns Hopkins University have embarked on joint research that has resulted in findings that Artificial Intelligence (AI) is superior in finding toxic substances to traditional animal testing. Beyond being more effective, UL's Cheminformatics REACHAcross™ ...

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