Desperately sick man receives his first pig heart transplant. Astronomers witness a dying red giant becoming a supernova. Researchers identify biomarkers for depression. And the Israeli goldfish go for a drive!
Doctor transplants pig heart to human patient for the first time
Doctors at the University of Maryland announced on Monday that they had transplanted the heart of a transgenic pig into a dying man who was ineligible for a human heart transplant. The patient, 57-year-old Maryland-based David Bennett, underwent surgery last Friday.
“It was either dying or doing this transplant. I want to live. I know it’s a shot in the dark, but that’s my last choice,” said the patient the day before surgery. Said Bennett. He has been hospitalized for the past few months and has been bedridden. “I’m looking forward to getting out of bed after recovering.”
If genetically modified hearts are found to be feasible to prevent rejection, doctors hope that such surgery will be an option for patients who are currently unable to undergo a human heart transplant. increase.
look: Undergraduate scientists and clinicians at the University of Maryland School of Medicine perform the first historic successful transplant of the pig heart into an adult with end-stage heart disease
Astronomers witness a red giant going to a supernova
Astronomers at Northwestern University and the University of California, Berkeley saw the red giant becoming a supernova for the first time.
Researchers were able to observe the giant star for 130 days before it collapsed into a type II supernova.
“This is a breakthrough in our understanding of what a giant star will do just before it dies,” he said. Wynn Jacobson-Galán, Leading author of the study. “Direct detection of pre-supernova activity in red supergiants has never been observed in normal type II supernovae. For the first time, we saw a red supergiant explode.”
Researchers Discover Biomarkers for Depression
UIC researchers say the development of a blood test for depression is imminent. In a new empirical study, researchers led by Mark Rasenick, a prominent professor of physiology, biophysics, and psychiatry at the University of Illinois at Chicago, identified biomarkers for human platelets that track the degree of depression. The researchers found that people with depression had reduced levels of adenylate cyclase, a molecule in the cell wall that is made in response to neurotransmitters such as serotonin.
“We have developed a test that can not only show the presence of depression, but also a therapeutic response with a single biomarker, which has never existed before,” he said. Rasenick, who is also a research career, said. Scientist at Jesse Brown VA Medical Center.
Sounds surreal, but Israeli scientists teach goldfish to drive.
Researchers at the University of Negev Ben Gurion wanted to investigate whether animal navigation abilities were innate or limited to the home environment. In the experiment they devised, a series of wheels was placed under a goldfish tank equipped with a camera system to record the movement of the fish and transform it into the front-back and left-right directions of the wheels.
The goldfish quickly learned to navigate towards the target.
“This study suggests that navigation abilities are universal rather than environment-specific. Second, goldfish have the cognitive ability to learn complex tasks in an environment that is completely different from the evolved environment. It’s a challenge at first, as anyone who wants to learn how to ride a bicycle or drive a car knows, “says Dr. Shachar Givon. A student in the Department of Life Sciences, Faculty of Natural Sciences.
Note: This story will be updated with a video.
Israeli researchers teach goldfish to drive | Chicago News
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