The relationship between midlife Neuroticism and age of dementia onset was evaluated using both correlational analysis and backward linear regression analysis.
Results. Midlife Neuroticism predicted younger age of dementia onset in females but not in males. The association found in females was independent of pre-morbid history of affective
Conclusions. This finding and its potential mechanism warrant further investigation.”
“In bilateral organisms, fluctuating asymmetry (FA) was often used as an index of developmental instability but FA was not always found to be higher in stressful environments. An intercontinental set of recombinant inbred lines (RIL) was used to search for genetic variation in fluctuating asymmetry (FA) of both wing length (WL) and wing width (WW) in Drosophila melanogaster when reared at both benign (25 degrees C) and stressful (30 OTX015 supplier degrees C) temperatures. FA levels did not differ between this website benign and stressful temperatures. At benign temperature, no QTL was significant for FA. However, at stressful temperature, composite interval mapping revealed some QTL for FA in both WL and WW. QTL-based scans under stressful thermal environments may be an informative approach for either FA or developmental instability analyses, even when FA levels are similar between stressful and benign environments. (C)
2011 Elsevier Ltd. All rights reserved.”
“A fundamental feature of human memory is the propensity for beneficial changes in information storage after initial encoding. Recent research findings favor the possibility that memory consolidation during sleep is instrumental for actively maintaining the storehouse of memories that individuals carry through their lives. The information that ultimately remains available for retrieval may tend to be that which is reactivated during sleep. A novel source of support for this idea comes from demonstrations that neurocognitive processing during sleep can benefit memory storage when memories are covertly
cued via auditory or olfactory stimulation. Investigations of these subtle manipulations of memory processing during sleep can help elucidate the mechanisms of memory preservation in the human brain.”
“Objective: To study the Liproxstatin-1 neurotoxicity induced by Ricinus communis agglutinin (RCA), ricin A chain (RTA), and trichosanthin (TCS) in vitro. Methods: Rat neurons and Schwann cells were cultured and real-time up-take of RIPs was traced. TUNEL, Annexin V and DAPI were employed to study the mechanism. Results: The purity of both primary neuronal and Schwann cell cultures attained 80-90%. In neuritis, transport of FITC-RCA was demonstrated, but RTA and TCS were not detected. RCA elicited the strongest TUNEL and annexin V signals in both cultures. RTA evoked a stronger apoptotic signal than TCS in neurons. In contrast, compared with TCS, RTA elicited an attenuated apoptotic reaction in Schwann cells.