Genetically engineered bacteria can detect cancer cells in a world-first experiment
As medical technology advances, many diseases could be detected, prevented and cured with cells, rather than pills.
Aug 13, 2023
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As medical technology advances, many diseases could be detected, prevented and cured with cells, rather than pills.
Aug 13, 2023
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The vast majority of diseases and disorders afflicting humans, ranging from arthritis to Zika fever, involve some level of inflammation. While inflammation is most familiar to us as pain, redness, and swelling, a slew of ...
Jun 22, 2023
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Scientists from the Institute of Physics of the Czech Academy of Sciences have published the results of extensive research to map the occurrence of SARS-CoV-2 virus in Prague public transport during the COVID-19 pandemic. ...
Jun 6, 2023
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Despite significant and stunning advances in vaccine technology, the COVID-19 global pandemic is not over. A key challenge in limiting the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is identifying ...
Jul 1, 2022
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Scientists have successfully tested in the lab a tiny biosensor they developed that can detect biomarkers tied to traumatic brain injuries.
Feb 3, 2022
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Rapid, accessible and highly accurate detection of addictive substances such as opiates and cocaine is vital to reducing the adverse personal and societal impacts of addiction, something current drug detection systems can ...
Jan 4, 2022
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Researchers are a step closer to transforming a US$70 billion global diagnostic industry with new designer biosensors that 'switch on' color or electrical responses to drugs used in cancer, arthritis, and organ transplant ...
Dec 19, 2021
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Ever since the first barcode appeared on a pack of chewing gum in 1974, the now-ubiquitous system has enabled manufacturers, retailers and consumers to quickly and effectively identify, characterize, locate and track products ...
Nov 30, 2021
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Researchers at EPFL have developed a technology based on nanophotonics and data science to detect and monitor cancer biomarkers at an early stage. Their research is published in Nature Communications.
Jun 8, 2021
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A team of Spanish researchers have developed, at the laboratory level, a prototype of a new biosensor to help detect breast cancer in its earliest stages. One of the team coordinators has been Ramón Martínez Máñez, a ...
May 20, 2021
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A biosensor is a device for the detection of an analyte that combines a biological component with a physicochemical detector component.
It consists of 3 parts:
The most widespread example of a commercial biosensor is the blood glucose biosensor, which uses the enzyme glucose oxidase to break blood glucose down. In doing so it first oxidizes glucose and uses two electrons to reduce the FAD (a component of the enzyme) to FADH2. This in turn is oxidized by the electrode (accepting two electrons from the electrode) in a number of steps. The resulting current is a measure of the concentration of glucose. In this case, the electrode is the transducer and the enzyme is the biologically active component.
Recently, arrays of many different detector molecules have been applied in so called electronic nose devices, where the pattern of response from the detectors is used to fingerprint a substance. Current commercial electronic noses, however, do not use biological elements.
A canary in a cage, as used by miners to warn of gas could be considered a biosensor. Many of today's biosensor applications are similar, in that they use organisms which respond to toxic substances at a much lower level than us to warn us of their presence. Such devices can be used in environmental monitoring, trace gas detection and in water treatment facilities.
This text uses material from Wikipedia, licensed under CC BY-SA