January 11, 2011 |
Chemotherapy, radiation treatments, organ transplants and illness can all depress numbers of platelets -- the cell fragments in the blood that help form clots -- in the human body. Patients often need platelet transfusions. Unfortunately, platelets are scarce. Today, hospitals depend on blood donations to get them, and once they're in hand, they have a very short shelf life: only about a week. But, researchers wrote Tuesday in the journal Cell Research , pluripotent stem cells -- that is, cells that have the potential to turn into any other type of cell in the body -- might one day provide a way to generate "an unlimited supply of platelets for transfusion" in the laboratory.
November 30, 1985 |
Artificial red blood cells made from outdated human blood have been shown to be safe and effective when used as oxygen carriers in animals, according to researchers at the University of California, San Francisco. The artificial cells meet all the requirements of a blood substitute, study leader C. Anthony Hunt said. The substitute could be stored longer than whole blood, could be given to people of any blood type and has potential uses in surgery and trauma care for both humans and animals.
December 2, 1985 |
The Food and Drug Administration, concerned about disappointing results with the Jarvik-7 artificial heart, said today that it is considering whether to allow Dr. William DeVries to complete a series of seven implants the agency earlier authorized. DeVries, based at the Humana Heart Institute of Louisville, Ky., is the only U.S. surgeon licensed to implant permanent artificial blood pumps in humans.
April 17, 1986 |
Vladimir Apekin's wife and daughter are engaging in an indefinite hunger strike in the hope that they can persuade the Soviet authorities to let the refusenik leave the country for special medical care. Apekin, 49, a former marine biologist who was dismissed from his job after he applied to emigrate to Israel, was hospitalized in early March for a variety of ailments, including heart disease.
April 4, 2006 |
In a major advance toward the development of artificial organs, bladders grown from patients' own cells in the laboratory have been successfully implanted in seven children with spina bifida and shown to function for five years or longer, researchers reported today. The achievement, reported online in the international medical journal the Lancet, marks the first time that artificial organs more complicated than skin and bone have been implanted in humans.
CALIFORNIA | LOCAL
November 3, 1985 |
The Cray-2 is only four feet high and four feet in diameter, but the new $17-million device at NASA's Ames Research Center is the world's fastest, most powerful supercomputer. Because its micro-miniaturized electronic circuits are packed so close together, the compact machine is the first supercomputer to have components immersed in a colorless fluorocarbon liquid that prevents overheating. The liquid also often is used as artificial human blood plasma.
CALIFORNIA | LOCAL
December 11, 1995 |
Ten years ago, Dr. Robert Ferguson conducted an improbable experiment. Using balloon angioplasty, a technique to unclog coronary arteries, he tried to open a blocked artery in a stroke victim's neck. The patient thrived, but Ferguson, a radiologist at Baptist Memorial Hospital in Memphis, was practically run out of medicine for taking the therapeutic gamble, which he believed was justified because the patient also had cancer, making him ineligible for standard surgical therapy. "There was great doubt that this made any sense," Ferguson said.
July 17, 2002 |
A year ago, the Navy gave Anthony Mulligan's company a small grant to build a cheap aerial drone for whale watching. The idea was to make sure marine mammals weren't around during sonar tests. Then came Sept. 11. And, with the help of an Arizona congressman, Mulligan transformed the drone into a potential weapon in the new war on terrorism.