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Boosting Sirt4 gene activity extends healthy lifespan in fruit flies

A new study on the mechanics of aging and longevity finds that fruit flies inhibited from producing the protein Sirt4 — which is also found in humans — are short-lived, while flies modified to make extra Sirt4 are long-lived. In addition, flies lacking Sirt4 display increased sensitivity to starvation, decreased fertility …

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Cells protect genes more than rest of genome

Whilst DNA sequence mutation is the fundamental fuel of species evolution, mutations in genes are often harmful. As a form of defence, organisms have evolved repair mechanisms to correct the DNA sequence following mutation. One of these mechanisms, is termed DNA mismatch repair (MMR). It corrects mutations that arise during …

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A new study shows that white noise improves learning performance

Everyone needs to study something. Even if you are out of university and school, you have to learn something every day to grow as a personality and be overall a more interesting person. But what environment is easier for you to study in? Scientists from The University of Queensland say …

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How the brain keeps time

Timing is critical for playing a musical instrument, swinging a baseball bat, and many other activities. Neuroscientists have come up with several models of how the brain achieves its exquisite control over timing, the most prominent being that there is a centralized clock, or pacemaker, somewhere in the brain that …

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Mapping Earth’s Microbiome | Technology Org

More than 27,500 samples collected across seven continents and 43 countries. More than 307,500 unique DNA sequences. One reference map of the bacteria and related microbes that call Planet Earth home. This is the result of the Earth Microbiome Project, an effort by an extensive global team co-led by researchers at …

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One plant at a time with drone imagers

Precision farming is set to become even more precise with a new camera drawing on satellite imaging. Thanks to research with ESA on new cameras, hyperspectral cameras flying on drones are now able to see details as small as 4–5 cm. Three customers are already using the first version of …

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Liquid Biopsy May Be New Way to Detect Liver Cancer Earlier, Easier

An international team of researchers at University of California San Diego School of Medicine and Moores Cancer Center, with colleagues at Sun Yet-sun University Cancer Center and other collaborating institutions, have developed a new diagnostic and prognosis method for early detection of hepatocellular carcinoma (HCC), based on a simple blood …

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DNA Mutations Shed in Blood Predicts Response to Immunotherapy in Patients with Cancer

In a first-of-its-kind study, University of California San Diego School of Medicine researchers report that a blood sample, or liquid biopsy, can reveal which patients will respond to checkpoint inhibitor-based immunotherapies. “We can help predict response to immunotherapy by measuring the number of mutations in circulating tumor DNA using a …

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Microscope can scan tumors during surgery and examine cancer biopsies in 3-D

When women undergo lumpectomies to remove breast cancer, doctors try to remove all the cancerous tissue while conserving as much of the healthy breast tissue as possible. But currently there’s no reliable way to determine during surgery whether the excised tissue is completely cancer-free at its margins — the proof …

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NIST’s Quick Test May Speed Antibiotic Treatment and Combat Drug Resistance

Researchers at the National Institute of Standards and Technology (NIST) have demonstrated a potential new tactic for rapidly determining whether an antibiotic combats a given infection, thus hastening effective medical treatment and limiting the development of drug-resistant bacteria. Their method can quickly sense mechanical fluctuations of bacterial cells and any changes induced by an …

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