Tuesday April 24, 2018

Stem Cells May Help To Stay Strong In Old Age

For the study, published in the journal Nature Communications, researchers investigated the number of mutations that accumulate in the muscle's stem cells (satellite cells)

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Stem cells
As we grow older, our muscular function declines. So, according to the researchers, this discovery may result in new medication to build stronger muscles even when in old age. Pixabay
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Researchers have found how an unexpectedly high number of mutations in the stem cells of muscles impair cell regeneration.

For the study, published in the journal Nature Communications, researchers investigated the number of mutations that accumulate in the muscle’s stem cells (satellite cells).

ALSO READ: Treating blindness with stem cell therapy

“What is most surprising is the high number of mutations. We have seen how a healthy 70-year-old has accumulated more than 1,000 mutations in each stem cell in the muscle, and that these mutations are not random but there are certain regions that are better protected,” said co-author Maria Eriksson, professor at Sweden’s Karolinska Institutet.

Stem cells
The study was performed using single stem cells cultivated to provide sufficient DNA for whole genome sequencing. Pixabay

The mutations occur during natural cell division, and the regions that are protected are those that are important for the function or survival of the cells. Nonetheless, the researchers were able to identify that this protection declines with age.

ALSO READ: Scientists have grown Human Cells inside Pig Embryos with goal of growing Livers, other Human Organs in Animals

“We can demonstrate that this protection diminishes the older you become, indicating an impairment in the cell’s capacity to repair their DNA. And this is something we should be able to influence with new drugs,” said Eriksson.

“We achieved this in the skeletal muscle tissue, which is absolutely unique. We have also found that there is a very little overlap of mutations, despite the cells being located close to each other, representing an extremely complex mutational burden,” the researcher noted. (IANS)

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Daily meditation may keep you attentive in old age

"Meditation has the potential to alter longitudinal trajectories of cognitive change across a person's life," Zanesco added

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Meditation, Wikimedia Commons
  • Meditation can help old people to stay attentive
  • Meditative practices can increase cognition
  • It can improve health overall

Want to stay attentive in your old age? Start doing meditation. Regular and intensive sessions over the course of a lifetime may help you to stay focused and attentive even in advanced years, according to a new study.

yoga posture that prevent from alzheimer
Meditation can increase attention span. wisdonquterly

“This study is the first to offer evidence that intensive and continued meditation practice is associated with enduring improvements in sustained attention and response inhibition,” said lead author of the study Anthony Zanesco, now at the University of Miami.

“Meditation has the potential to alter longitudinal trajectories of cognitive change across a person’s life,” Zanesco added. The research evaluates the benefits that people gained after three months of full-time meditation training and whether these benefits are maintained seven years later.

Also Read: Stem Cells May Help To Stay Strong In Old Age

This study, published in the Journal of Cognitive Enhancement, follows up on previous work by the same group of researchers at the University of California in 2011. The 2011 study assessed the cognitive abilities of a group of people who regularly meditated before and after they went on a three-month-long retreat.

After the first group’s initial retreat was over, the second group received similar intensive training. As part of this study, follow-up assessments were conducted six months, 18 months and seven years after completion of the retreats. During the last appraisal, participants were asked to estimate how much time over the course of seven years they had spent meditating outside of formal retreat settings, such as through daily or non-intensive practice.

Meditation is good, Vastu tips
Meditative practices can improve cognition. Pixabay

The participants who had remained in the study all reported some form of continued meditation practice — 85 percent attended at least one meditation retreat and they practised amounts on average that was comparable to an hour a day for seven years. The participants again completed assessments designed to measure their reaction time and ability to pay attention to a task. IANS

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