Blood test detects Alzheimer’s disease

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Researchers have created a simple blood test that can detect Alzheimer’s disease.

 The blood test accurately measures one of the proteins—P-tau181—implicated in Alzheimer’s disease (AD), according to a new study.

Blood P-tau181 indirectly measures tau hyperphosphorylation in the brain, which is one of the hallmarks of the disease along with the clumpy plaques caused by the protein amyloid β.

Prior to this discovery, detecting the proteins and confirming an Alzheimer’s disease diagnosis was possible only through expensive PET scans, invasive lumbar punctures, or autopsy.

The search for an Alzheimer’s disease blood test has been years in the making, but a test sensitive enough to detect tau long eluded researchers.

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Sweat-analyzing patch could help spot biomarkers linked to COVID-19

When you think about wearable tech, chances are that your mind goes to a device like the Apple Watch long before it does the Band-Aid-style smart patch developed by Epicore Biosystems. But the company, which spun out of Northwestern University’s Querrey Simpson Institute for Bioelectronics and professor John A. Rogers’ laboratory, has been hard at work creating sweat-sensing smart patches which could be used to help measure sweat components in athletes and a variety of other individuals — and could even have potential application for medical use in helping keep tabs on crucial biomarkers for patients suffering from COVID-19.

“We have [created] two versions of the wearable sensor patch in development suitable across different applications,” Roozbeh Ghaffari, Epicore’s CEO and co-founder, told Digital Trends. “One is a color-changing wearable microfluidics patch used by athletes. The other is a Bluetooth-enabled patch that tracks the sweat biomarkers of workers in construction, on oil rigs, and in factories, plus other physically intense occupations — for the ‘industrial athletes.’”

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Precision medicine is much more than genetics

Drug Development

Ricki Lewis, PhD: When President Obama uttered the words “Precision Medicine” in the state-of-the-union address, I scoffed at a politician’s finally noticing a field that’s been around for decades: medical genetics. Was it another case of rebranding, as chemistry has morphed into nanotech? But the definition of Precision Medicine that has emerged is, well, precise: “An approach to disease treatment and prevention that seeks to maximize effectiveness by taking into account individual variability in genes, environment, and lifestyle.”

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New blood test can screen teens for depression: Study

teen depression

Scientists showed that teenage depression could be diagnosed through a panel of 11 genetic markers.

One day a simple blood test may be all that’s needed to help parents figure out whether a child is suffering from clinical depression or normal teenage angst, according to a new study.

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Does A Twin Earth Exist?

Does A Twin Earth Exist?

Artist’s conception shows a hypothetical twin Earth orbiting a Sun-like star.

Does a twin Earth exist somewhere in our galaxy? Astronomers are getting closer and closer to finding an Earth-sized planet in an Earth-like orbit. NASA’s Kepler spacecraft just launched to find such worlds. Once the search succeeds, the next questions driving research will be: Is that planet habitable? Does it have an Earth-like atmosphere? Answering those questions will not be easy.

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MicroRNA In Blood May Help Detect Cancer And Other Diseases

MicroRNA In Blood May Help Detect Cancer And Other Diseases 

 

Tiny pieces of RNA are turning out to play a big role in health. Over the past few years, scientists have found that these molecules, called microRNAs, are involved in key functions in cells and are linked to the development of certain cancers and other diseases. A new study led by scientists at Nanjing University, in China, finds that microRNAs circulating in blood can serve as a molecular “fingerprint” for cancers and diabetes. The findings raise the possibility that a simple blood test could help clinicians tailor treatments to individual patients.

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Optical Sensor Spots Oral Cancer

Optical Sensor Spots Oral Cancer 

 

For the first time, an optical sensor, developed by researchers at the University of California, Los Angeles (UCLA), can measure proteins in saliva that are linked to oral cancer. The device is highly sensitive, allowing doctors and dentists to detect the disease early, when patient survival rates are high.

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