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Archive for the ‘biotech/medical’ category: Page 32

Aug 12, 2024

State-of-the-art brain recordings reveal how neurons resonate

Posted by in categories: biotech/medical, neuroscience

For decades, scientists have focused on how the brain processes information in a hierarchical manner, with different brain areas specialized for different tasks. However, how these areas communicate and integrate information to form a coherent whole has remained a mystery.

Now, researchers at University of California San Diego School of Medicine have brought us closer to solving it by observing how neurons synchronize across the human brain while reading. The findings are published in Nature Human Behavior and are also the basis of a thesis by UC San Diego School of Medicine doctoral candidate Jacob Garrett.

“How the activity of the brain relates to the subjective experience of consciousness is one of the fundamental unanswered questions in modern neuroscience,” said study senior author Eric Halgren, Ph.D., professor in the Departments of Neurosciences and Radiology at UC San Diego School of Medicine.

Aug 12, 2024

3D-Printing Heart Tissue With Human Stem Cells

Posted by in categories: 3D printing, bioprinting, biotech/medical

Year 2023 face_with_colon_three


Scientists at Stanford University have developed a method for 3D-printing human heart tissue that could eventually be implanted into patients.

Continue reading “3D-Printing Heart Tissue With Human Stem Cells” »

Aug 12, 2024

3D bioprinting using stem cells

Posted by in categories: 3D printing, bioprinting, biotech/medical, life extension

Year 2018 face_with_colon_three


Pediatric Research volume 83, pages 223–231 (2018) Cite this article.

Aug 12, 2024

Israeli scientists create world’s first 3D-printed heart using human cells

Posted by in categories: 3D printing, biotech/medical

Year 2019 face_with_colon_three


The team created a cell-containing “bioink” and used it to 3D print the organ layer by layer.

Aug 12, 2024

Evaluating Possible Anti-Aging Drugs

Posted by in categories: biotech/medical, genetics, life extension, neuroscience

Aging is the major risk factor for the development of chronic diseases such as cardiovascular disease, cancer, diabetes, and dementia. Therefore, drugs that slow the aging process may help extend both lifespan and healthspan (the length of time that people are healthy).

In a study published online on February 29 in Medical Research Archives, Albert Einstein College of Medicine researchers evaluated U.S. Food and Drug Administration-approved drugs for their anti-aging potential. In ranking those drugs, they gave equal weight to preclinical studies (i.e., effect on rodent lifespan and healthspan) and clinical studies (i.e., reduced mortality from diseases the drugs were not intended to treat). The four therapeutics judged most promising for targeting aging were SGLT2 inhibitors, metformin, bisphosphonates, and GLP-1 receptor agonists. Since these drugs have been approved for safety and used extensively, the researchers recommend they be evaluated for their anti-aging potential in large-scale clinical trials.

The study’s corresponding author was Nir Barzilai, M.D., director of Einstein’s Institute for Aging Research, professor of medicine and of genetics and the Ingeborg and Ira Leon Rennert Chair in Aging Research at Einstein, and a member of the National Cancer Institute–designated Montefiore Einstein Comprehensive Cancer Center. The lead author was Michael Leone, a medical student at Einstein.

Aug 12, 2024

Replacing Hearts. Restoring Lives

Posted by in categories: biotech/medical, health

This new titanium heart has a mag lev inside to spin continuously and pump at the same rate as a normal heart.


Heart failure is a global epidemic affecting at least 26 million people worldwide, 6.2 million adults in the U.S., and is increasing in prevalence. Heart transplantations are reserved for those with severe heart failure and are limited to fewer than 6,000 procedures per year globally.

Consequently, the U.S. National Institutes of Health estimated that up to 100,000 patients could immediately benefit from mechanical circulatory support (MCS), and the European market is similarly sized. Without intervention, patients with severe HF have a bleak outlook. For these patients, drug therapy is a limited, relatively ineffective option. Although a heart transplant would meet their needs, only 6,000 donor hearts are available globally each year.

Continue reading “Replacing Hearts. Restoring Lives” »

Aug 12, 2024

Maglev titanium heart now whirs inside the chest of a live patient

Posted by in category: biotech/medical

For the first time, the fully mechanical heart made by BiVACOR, which uses the same technology as high-speed rail lines, has been implanted inside a human being. The feat marks a major step in keeping people alive as they wait for heart transplants.

The total artificial heart (TAH) was implanted as part of an early feasibility study overseen by the US Food and Drug Administration. According to a statement from the Texas Heart Institute where the implantation surgery was carried out, the heart “is a titanium-constructed biventricular rotary blood pump with a single moving part that utilizes a magnetically levitated rotor that pumps the blood and replaces both ventricles of a failing heart.”

BiVACOR, which has been working on the device since 2013, says that the advantage of using a magnetically levitated rotor to drive the device’s blood-circulating function is that there is no friction, which can be such a damaging force to machinery that scientists are looking at ways to reduce its effects. The device is by no means the first artificial heart to be used – the first successful implant took place in 1969 – but it is the first to employ this novel use of maglev technology.

Aug 12, 2024

The Cure for Disposable Plastic Crap Is Here—and It’s Loony

Posted by in category: biotech/medical

Stretchy seaweed. reverse vending machines. qr-coded take-out boxes. to cure our addiction to disposable crap, we’ll all need to get a little loony.

Aug 12, 2024

Long COVID Puzzle Pieces are Falling into Place—the Picture is Unsettling

Posted by in categories: biotech/medical, health, neuroscience

Since 2020, the condition known as long COVID-19 has become a widespread disability affecting the health and quality of life of millions of people across the globe and costing economies billions of dollars in reduced productivity of employees and an overall drop in the work force.

The intense scientific effort that long COVID sparked has resulted in more than 24,000 scientific publications, making it the most researched health condition in any four years of recorded human history.

Long COVID is a term that describes the constellation of long-term health effects caused by infection with the SARS-CoV-2 virus. These range from persistent respiratory symptoms, such as shortness of breath, to debilitating fatigue or brain fog that limits people’s ability to work, and conditions such as heart failure and diabetes, which are known to last a lifetime.

Aug 12, 2024

Can odors help fight infection? Nematode research suggests so

Posted by in categories: biotech/medical, robotics/AI

In a recent study published in Science Advances, researchers from the University of California, Berkeley, used the nematode model Caenorhabditis elegans to determine whether the olfactory nervous system could non-autonomously control the mitochondrial unfolded protein response in response to cellular stress.

A critical part of maintaining a state of cellular homeostasis is coordinating responses to environmental stress across tissues. Substantial evidence now supports the fact that the central nervous system regulates stress across all tissues. Furthermore, cell non-autonomous induction of stress responses occurs in peripheral tissues when unfolded protein responses (UPR) in the mitochondria and the endoplasmic reticulum are activated in the neurons.

Stressed cells undergo misfolding or unfolding of proteins, and UPR transmits protein folding status information to the nucleus to enable cellular stress responses or induce apoptotic cell death. The non-autonomous control of cellular stress responses is believed to be essential for the organism to survive toxic environmental conditions.

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