News tips from the Journal of Neuroscience
... between postnatal day 7 (PND7) and PND35 and then tracked immunocytochemical markers out to PND135. In adult rats, the 4 weeks of postnatal treatment decreased anxiety-like behavior on the elevated plus-maze task. At PND35, but not PND135, MPH-treated rats also showed increased tyrosine hydroxylase-immunore...From the corner of the eye: Paying attention to attention
...ing cells typically fired more frequently when the tracked object was attended than when it was unattended. Broad-spiking cells, on the other hand, were less influenced by attention. Some fired faster, while others fired more slowly when attention was directed to the stimulus in the receptive field. Whats m...Study shows cane sugar, corn sweeteners have similar effects on appetite
...rovided subjects with a beverage mid-morning, then tracked hunger, appetite and thirst for two hours, and then gave the study participants lunch. Cola beverages sweetened with sucrose or with two different types of high-fructose corn syrup were compared to an aspartame-sweetened diet cola, milk (1 percent fa...A stepwise retreat: How immune cells catch pathogens
...r Biology Laboratory (EMBL) now for the first time tracked the dynamic behaviour of these tentacles in three dimensions. In the current online issue of PNAS they describe a molecular mechanism that likely underlies the tentacle movement and that could influence the design of new nanotechnologies. The long ...High blood pressure medication strategy proves effective in Hispanic women
...apamil SR-Trandolapril study, known as INVEST, and tracked a subgroup of 5,017 Hispanic and 4,710 non-Hispanic white women who were randomly assigned to a drug strategy containing either a sustained release form of the calcium antagonist verapamil or the beta-blocker atenolol. The INVEST study enrolled mo...Hepatitis C helicase unwinds DNA in a spring-loaded, 3-step process
...-molecule fluorescence analysis, the research team tracked how the hepatitis C helicase, NS3, unwound a duplexed DNA molecule tagged with a fluorescent label on each strand of its double-stranded region. (The NS3 helicase is primarily involved in unwinding the single-stranded RNA of the hepatitis virus, but ...Multicenter study nets new lung tumor-suppressor gene
...ives the formation and growth of lung cancer. They tracked the development of lung cancer in animals with mutated LKB1 and compared it to the experience of animals with abnormalities in either of two well-known tumor-suppressor genes. They found that while Kras "cooperated" with the mutated tumor-suppresso...Satellite tracking will help answer questions about penguin travels
... Through late October the birds' movements will be tracked by the Argos satellite system, operated by the National Oceanic and Atmospheric Administration and the French space agency. A satellite will pass overhead every two hours and chart the penguins' positions, then transmit the information back to the re...New, more direct pathways from outside the cell-to-cell nuclei discovered
...d clear through the cell. Specifically, the team tracked phagosomes carry extracellular material into the cell nuceli by introducing fluorescent latex beads into the area outside of the cell. They then observed the cells phagocytose (eat) the beads, which gradually moved to the nucleus. The arrival of the ...