Category Biology/Biotechnology

New Study confirms Forever Chemicals are Absorbed through Human Skin

A study of 17 commonly used synthetic ‘forever chemicals’ has shown that these toxic substances can readily be absorbed through human skin.

New research, published today in Environment International proves for the first time that a wide range of PFAS (perfluoroalkyl substances) — chemicals which do not break down in nature – can permeate the skin barrier and reach the body’s bloodstream.

PFAS are used widely in industries and consumer products from school uniforms to personal care products because of their water and stain repellent properties. While some substances have been banned by government regulation, others are still widely used and their toxic effects have not yet been fully investigated.

PFAS are already known to enter the body through other routes, for example being...

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3D-Printed Chip Sensor Detects Foodborne Pathogens for Safer Products

The researchers created a chip with four distinct regions, capable of rapidly testing for the presence of multiple pathogens simultaneously. Credit: Feng et al.
The researchers created a chip with four distinct regions, capable of rapidly testing for the presence of multiple pathogens simultaneously. Credit: Feng et al.

Chip design can rapidly and efficiently test for multiple pathogens simultaneously, potentially reducing foodborne illness. Researchers have developed a new method for detecting foodborne pathogens that is faster, cheaper, and more effective than existing methods. Their microfluidic chip uses light to detect multiple types of pathogens simultaneously and is created using 3D printing, making it easy to fabricate in large amounts and modify to target specific pathogens. The researchers hope their technique can improve screening processes and keep contaminated food out of the hands of consumers.

Every so often, a food product i...

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Dietary Fiber found to Regulate Gut Bacteria’s use of Tryptophan, Impacting Health

Dietary fibers make our gut bacteria behave healthy
The essential amino acid tryptophan is converted in the large intestine into either beneficial or harmful substances. The research shows that tryptophan contributes to the production of the healthy substances Indole lactic acid (ILA) and Indole propionic acid (IPA) when we consume sufficient amounts of dietary fiber. However, if we do not get enough dietary fiber, tryptophan will be converted into the substance indole, which is associated with adverse health effects. The figure is created with BioRender (biorender.com) by Martin Frederik Laursen. Credit: The figure is created with BioRender (biorender.com) by Martin Frederik Laursen.

We get healthy dietary fiber from consuming fruits, vegetables, and whole grains...

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Beyond CRISPR: seekRNA delivers a New Pathway for Accurate Gene Editing

Beyond CRISPR: seekRNA delivers a new pathway for accurate gene editing
IS1111 and IS110 family features. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-49474-9

Scientists at the University of Sydney have developed a gene-editing tool with greater accuracy and flexibility than the industry standard, CRISPR, which has revolutionized genetic engineering in medicine, agriculture and biotechnology.

SeekRNA uses a programmable ribonucleic acid (RNA) strand that can directly identify sites for insertion in genetic sequences, simplifying the editing process and reducing errors.

The new gene-editing tool is being developed by a team led by Dr. Sandro Ataide in the School of Life and Environmental Sciences. Their findings have been published in Nature Communications.

“We are tremendously excited by the potential for this technology...

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