Amoebae control cheating by keeping it in the family
...ferentially associated with its own kin -- another mechanism that ensures altruism isn't taken advantage of by cheaters. The current study combined graduate student Owen Gilbert's careful field and lab work on natural D. discoideum clones with exacting studies of genetically engineered mutant strains conduct...Tracing Parkinson's lethal mechanism
...rchers have reported progress in understanding the mechanism underlying that death, which they say suggests a n...ished by Cell Press. The researchers studied the mechanism of PD using a mouse model of the disease, in which a mitochondria-affecting toxin called MPTP is use...Gene variations directly link inflammation to an increased risk for lung cancer
... for Cancer Research, is the first to pinpoint the mechanism by which damage to the lung might trigger an overzealous inflammatory response by the immune system, leading to lung cancer. The variants, or polymorphisms, were found in genes for interleukin 1A and interleukin 1B, two signaling molecules that imm...Study examines cause of hearing loss for patients with certain genetic disease
...nic cartilage capsule that surrounds the inner ear mechanism and develops into bony tissue] by tumor, intralabyrinthine hemorrhage, and endolymphatic hydrops [recurrent vertigo accompanied by ringing in the ears and deafness]. Since significant audiovestibular dysfunction, including deafness, can occur sudde...Faulty cell membrane repair causes heart disease
...lege of Medicine have discovered a specific repair mechanism in heart muscle and identified a protein called dy...ed dysferlin as a key protein in this vital repair mechanism in skeletal muscle. In humans, dysferlin deficiency -- which leads to faulty muscle membrane repair ...Researchers discover method for identifying how cancer evades the immune system
...tment. The implication is that once you know the mechanism by which tumors evade the immune system, you can match that tumor to available therapies, said senior author Alan L.Epstein, M.D., Ph.D., professor of Pathology at USCs Keck School of Medicine. First, we find the genetic changes that allow a tumor to...New clue why MS affects African-Americans differently than Caucasians
...isability, but the products of these genes and the mechanism of their effects remain unknown. The study found that African Americans had MS for an average of nine years before needing a cane, walker, or wheelchair, compared to an average of 17 years for Caucasians. However, Rinker says the higher values of a...Generalized reciprocity in rats
... another unknown partner receive food. This simple mechanism may promote the evolution of cooperation among unfamiliar non-relatives in many other animals....JCI Table of Contents -- July 2, 2007
...ed in muscular dystrophy. While the precise repair mechanism remains unclear, it is thought that dysferlin-carrying repair vesicles are recruited to the rupture site and fuse with the plasma membrane through interaction with proteins known as annexins. In an accompanying commentary, Jan Lammerding and Richar......he International Nuclear Event Scale (INES) is the mechanism used to classify and report events to the world at large. Cynthia Jones, who is the US representative to the INES Advisory Committee and is also a senior technical advisor on nuclear security at the Nuclear Regulatory Commission (NRC), reviewed the...Mother-of-pearl -- Classic beauty and remarkable strength
...'s why it's so fun to study." Understanding the mechanism by which nacre forms would be the first step towar...rowth models, you get insight into what the actual mechanism of the growth is," Coppersmith says. The group developed a model that suggests that the animal cr...CU researchers solve mystery of how DNA strands separate
...arate the two strands. "A simple passive unwinding mechanism does not explain our data," said Michelle Wang, associate professor of physics and the paper's senior author. "Defects in helicases are associated with many human diseases, ranging from predisposition to cancer to premature aging," said co-author Smi...Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
...uent collapses, said Ms Payne. She explained the mechanism that underlies blastocoelic collapse and re-expansion. The fluid in the cavity must be under positive pressure as this pressure is the motive force for expansion of the blastocyst. The trophectoderm maintains the pressure by pumping the fluid into th...Marine worm opens new window on early cell development
...on and communication between cells. This ancient mechanism remains a central feature of animal development in all animals today, and malfunction of this mechanism in humans is associated with some of the most common and deadly forms of cancer, including colon can...Doing nature one better: Expanding the genetic code in living mammalian cells
...d unnatural amino acids to determine the operating mechanism of the molecular gates that regulate the movement of potassium ions in and out of nerve cells. In the past, this type of engineering has been mainly restricted to bacteria or in yeast, and it was very challenging to efficiently incorporate unnatura...New dynamic brace developed to advance clubfoot treatment
...d ankle. The bar connecting the feet has a release mechanism that allows parents to easily detach and reattach the bar to place the child in a car seat or high chair or change a diaper without removing the entire brace. Other differences from the traditional brace is that the Dobbs brace also allows children t...'Modular' leukemia drug shows promise in early testing
... cause cells to self-destruct by triggering a cell mechanism that requires enzymes called caspases. This new agent, however, works through a mechanism that does not require caspases. This is exciting because it means that this agent may benefit pat...UCF professor finds bacterial pathogen may be key to understanding cancer development
...ers into cells of the human body, and explains the mechanism in this months issue of the journal Cellular Microbiology. We found that Listeria actually provokes human epithelial cells (cells lining the small intestine) into ingesting bacteria, Ireton said. When Listeria contacts an epithelial cell, the bact...Scientists discover role of enzyme in DNA repair
...DNA within a cell is damaged, the cells protective mechanism must do one of two things: repair the defect or co...t this unzipping activity might interfere with the mechanism that is trying to repair the damaged DNA. Casellas hypothesized that once DNA lesions were generat...Support for chromosomal theory of cancer found in cancers' development of drug resistance
...hack. This condition, generated by a defect in the mechanism that duplicates chromosomes during cell growth, leads to more and more chromosomal disorder as the cells divide and proliferate, disrupting even more genes and providing ample opportunity for the development of resistance to drugs being used to contr...