Scientists uncover secret to sharp teeth
...amel-free tooth regions. While the mechanism that dampens follistatin expression in unknown, it is clear that the lack of follistatin allows BMP signals to stimulate ameloblast differentiation on the labial side of the incisor....Harvard scientists discover how the venus flytrap snaps
...he middle. The hydrated nature of the leaf quickly dampens the vibrations caused by the movement, so the unlucky bug doesn't spill out. It then takes the plant up to eight hours to ready its leaves for the next unsuspecting bug." To reveal how the Venus flytrap snaps, the researchers painted ultraviolet f...New neurons born in adult rat cortex
...hat make and secrete GABA, a neurotransmitter that dampens neuronal activity. The new interneurons closely resembled those seen in the hippocampus and olfactory bulb and seemed to arise at similar rates. Interneurons are thought to play a role in regulating larger types of neurons that make long-distance con...Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine
...the normal levels of interleukin 10 (IL-10), which dampens down the immune response. LcrV also prevents secretion of tumor necrosis factor (TNF), which causes inflammation. "LcrV is secreted in massive amounts via the type-III pathway during an infection," Schneewind said. "Without it, the bacteria are rel...'Friend' protein keeps nerve signals in check
... negative regulator of release. In other words, it dampens down the system, regulating the efficiency and strength of the synapse." Because the nematode C. elegans uses proteins in its nervous system comparable to those in humans, Richmond suspects that forthcoming experiments involving tomosyn in mammals ...JCI table of contents: July 27, 2006
... GC-induced delay in the death of osteoclasts that dampens osteoblast activity and as such retards new bone formation, resulting in GC-induced osteoporosis. TITLE: Glucocorticoids suppress bone formation via the osteoclast AUTHOR CONTACT: Steven L. Teitelbaum Washington University School of Medicine, St....UW researchers link deadliness of 1918 flu to severe immune system response
...o punch that affects the viral infection, but also dampens the host immune-system response."...Researchers writing story of the 'alcoholic lung'
... rats. "These findings suggest that alcohol abuse dampens GM-CSF signaling, which, in turn, contributes to the alcoholic lung phenotype and renders the lung susceptible to edematous injury," the authors wrote. Treating lung epithelial cells with GM-CSF can reverse the deleterious effects of alcohol, the aut...News tips from the Journal of Neuroscience
...ed, suggesting that interhemispheric sensory input dampens receptive field plasticity. 3. Stop-and-Go Tract Tracing Adam R. Aron, Tim E. Behrens, Steve Smith, Michael J. Frank, and Russell A. Poldrack Aron et al. this week mapped a connection between brain regions that control cognitive "stop" signals. ...Fever after smallpox vaccination tied to individual genetic variations
... immune system. One variation in IL-4, a gene that dampens down the inflammatory response, also reduced fever risk. Interestingly, studies in mice have shown that immune system molecules produced by the IL-1 and IL-18 genes are linked to tissue damage in viral myocarditis, raising the question of whether a...