Resveratrol and Sir2 Reverse Sleep and Memory Defects Induced by Amyloid Precursor Protein / 神经科学通报·英文版

Resveratrol (RES), a natural polyphenolic phytochemical, has been suggested as a putative anti-aging molecule for the prevention and treatment of Alzheimer's disease (AD) by the activation of sirtuin 1 (Sirt1/Sir2). In this study, we tested the effects of RES and Sirt1/Sir2 on sleep and courtship memory in a Drosophila model by overexpression of amyloid precursor protein (APP), whose duplications and mutations cause familial AD. We found a mild but significant transcriptional increase of Drosophila Sir2 (dSir2) by RES supplementation for up to 17 days in APP flies, but not for 7 days. RES and dSir2 almost completely reversed the sleep and memory deficits in APP flies. We further demonstrated that dSir2 acts as a sleep promotor in Drosophila neurons. Interestingly, RES increased sleep in the absence of dSir2 in dSir2-null mutants, and RES further enhanced sleep when dSir2 was either overexpressed or knocked down in APP flies. Finally, we showed that Aβ aggregates in APP flies were reduced by RES and dSir2, probably via inhibiting Drosophila β-secretase (dBACE). Our data suggest that RES rescues the APP-induced behavioral deficits and Aβ burden largely, but not exclusively, via dSir2.

Simple Test for Evaluating Hand Function for Chinese / 中国康复理论与实践

Objective:To observe the measurement of Simple Test for Evaluating Hand Function (STEF) in Chinese, and compared to that of Japanese. Methods:From May to June, 2020, 130 healthy individuals were tested with the toolkit and instructions of STEF, and the result was compared with Japanese data with one-sample t-test, and adjusted. Results:Among the ten items performed on the right side of the STEF, nine items, except item four (middle-sized cubes), were significantly different from those of Japanese (|t| > 1.760, P < 0.05). Among the ten items performed on the left side of STEF, seven items, except item four (middle-sized cubes), item seven (vinyl sheets) and item eight (iron circular plates), were significantly different from those of the Japanese (|t| > 2.257, P < 0.001). Conclusion:There is significant difference in the test results of STEF between Chinese and Japanese samples, and need to be adjusted.