UCSF researchers find evidence of faulty DNA repair in some infertile men
... researchers to wonder if some infertile men could pass the problem of faulty DNA repair to offspring conceived through high technology- assisted reproduction methods. If so, this could potentially increase the risk of these children also being infertile, and might also predispose them to developing cance...Can a deadly spider replace chemical pesticides?
...aculovirus it would be great, but baculoviruses do pass on [to other species]." There are also fears that the toxin gene might be transferred to other viruses. "There is no instance of a toxin gene jumping from virus A to virus B," says Bruce Hammock of the University of California, Davis, who is also wo...Artificial chromosomes could cure diseases
...t is possible make artificial chromosomes that can pass from one generation to the next. Such techniques might soon make it possible to treat patients by loading their cells with extra chromosomes that are purpose-built to produce a therapeutic protein and operate entirely independently of our natural ...Mom may set your body clock, suggests Science research
...ammals are more difficult to study because mothers pass various substances to their fetuses, which could influence the fetal circadian clock. The next step is to find out how just how much of the circadian clock is inherited in assembled form. Laudet and his colleagues did find another gene, for example, ...Scientists look to nature to cut greenhouse emissions
...ide exhaust moves toward the smokestacks, it would pass through tubes of running water, creating bicarbonates that would bubble in the water like soda pop. The water then flows through a bioreactor that contains a series of screens on which algae grow. "The algae basically drink the bicarbonates," says Ba...Purdue researcher solves sorghum mystery
...proteins. Unfortunately, too many of the nutrients pass through the body unabsorbed. Purdue University food science professor Bruce Hamaker has found that each protein body in a single sorghum seed is surrounded by a tough inner protein wall. It takes stomach enzymes longer to break down the wall to reach...Scientists decipher structure of toxin responsible for botulism
...ying how the x-rays diffract as they bounce off or pass through parts of the crystal, the scientists work backward to reconstruct the shape and arrangement of the atoms in the molecule. "Without the intense x-ray beams at the NSLS, it would be very difficult to do this," Swaminathan says. The current stu...... controls the activity of proteins that helps ions pass through the outside of cells. "Our finding provides evidence that calsenilin could be an important mediator of mutant presenilin's effects on calcium signaling," Leissring said. "This could lead to pharmaceutical therapies and preventive measures...'Gatekeeper' protein is key to cellular life; links bacteria, chloroplasts and mitochondria
...d that certain "independent" proteins were able to pass into the membrane on their own. The new discovery, reported in this week's issue of the journal Nature, may suggest a completely new pathway for the translocation of proteins within basic biological units. Even more startling was the discovery that...High-resolution image illuminates catalytic engine of the ribosome
... bombarded with intense x-ray beams. As the x-rays pass through and bounce off of atoms in the crystal, they leave a diffraction pattern, which can then be analyzed to determine the three-dimensional shape of the protein. "Our previous maps of the 50S subunit at nine- and five-Ångström resolut...The ultimate pocket protector--radiation detection made easy
...amma rays are essentially massless energy that can pass through all but the heaviest forms of matter, such as lead or concrete. Neutrons are atomic particles-tiny pieces of the radioactive element's mass that crash into other atoms like a cue ball in a game of pool. The neutrons are then bounced away in...Small molecules used to block proteins in HIV
... versions of it to obtain an agent small enough to pass through a cell's membrane. The group then develope... sites, trying to develop a molecule that can both pass through the cell's membrane and block the proteins isn't easy to accomplish," she says. "The molecul...An "alarming" discovery for ruffe
... been studying pheromones -- chemical signals that pass between organisms of the same species and are detected by an animal's sense of smell. Fish commonly use pheromones to coordinate activities, such as mating and schooling, in waters that are often turbid, vast, and relatively featureless. Alarm phero...Alcohol and the human fetal brain
...d author of the study, "a part of the alcohol will pass across her placenta and enter fetal tissues, including the fetal brain. When the alcohol is converted to the highly toxic acetaldehyde in the brain tissues, it can then disrupt normal brain development. Because the cells of the human prenatal brain...Artificial muscles release medicine from tiny implants
...nk away from the holes in the wall to let medicine pass into the bloodstream. Once the right amount of medicine has left the capsule, the muscles will swell back up, and plug the holes once again. When the capsule runs out of medicine, it could be surgically removed and a new one implanted, Madou said. T...Prions may play crucial role in evolution.
...in shape from one protein to another. Mother cells pass these proteins to their daughters, so the change, once it occurs, is inherited from generation to generation. Because yeast prions act much like mammalian prions and are easier to study, scientists hope they will offer clues about how these mis-fol...Little-known substance regulates inflammatory response
...vessel permeability, allowing white blood cells to pass easily out of the capillaries to reach the site of an infection. Once the immune system gains the upper hand, however, it has to scale back this inflammatory response. Inflammation may be a valuable short-term weapon against infection, but prolong...New technique will improve delivery of drugs and gene therapy for cystic fibrosis patients
...l particles that contain the drug are too large to pass beyond airways that are partially obstructed by thick, sticky mucus, a condition resulting from the disease," says Beth Laube, Ph.D., an associate professor of pediatrics at Hopkins and lead author of the study. "This is the first study we know of to......ctively filter only this molecule into the cell.To pass through the "three-faced" channel, a molecule must... molecules, Stroud explained, and so water can not pass through the channel. Similarly, ions, that normally must be bound to water for safe passage, can not...Prosthetic limb to be controlled by microchip: Agreement signed to create smart leg
...d, when the entire structure locks, the wearer can pass his or her weight over it. The feet are usually not "smart" in adjusting to terrain. "We intend to develop a much more efficient device, with sensors placed at strategic points along foot and leg, that will enable a more normal and efficient walki...