Category Health/Medical

What if, instead of using X-rays or ultrasound, we could use touch to image the insides of human bodies and electronic devices? In a study published in the journal Cell Reports Physical Science on February 15, researchers present a bionic finger that can create 3D maps of the internal shapes and textures of complex objects by touching their exterior surface.

“We were inspired by human fingers, which have the most sensitive tactile perception that we know of,” says senior author Jianyi Luo, a professor at Wuyi University. “For example, when we touch our own bodies with our fingers, we can sense not only the texture of our skin, but also the outline of the bone beneath it.”

“Our bionic...

Telomeres—the caps at the ends of chromosomes that protect our genetic materials from the brunt of cellular wear and tear—are known to shorten and fray over time. Lifestyle, diet and stress can exacerbate this process, leading to early loss of telomere protection and increasing the chances of early aging and diseases, such as cancer and heart disease.

To date, approaches for measuring biological a...

Even though the COVID-19 public health emergency classification will expire this spring, the lingering effects of the pandemic remain. A constant puzzle to solve since the first year of the pandemic has been “long COVID,” a condition in which those infected with the virus have symptoms that linger months or even years after they have cleared the initial infection.

“Long COVID is estimated to affect one out of every five people who get COVID,” says Brent Palmer, Ph.D., associate professor of allergy and clinical immunology at the University of Colorado School of Medicine. “It’s described as persistent symptoms that last longer than four weeks post-initial infection. Those symptoms can include chest pain, cough, shortness of breath, brain fog, and fatigue.”

The virus that lingers
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In a new study, researchers discovered an unknown mechanism of how cells ‘remember’ their identity when they divide – the cells’ so-called epigenetic memory. As time passes and we get older, many cells need to replenish themselves. They do so by dividing into new cells: Heart cells, skin cells and so on.

But when cells continue to divide and make new cells, they lose some of the information from their mother cell...