DOI: 10.1002/ame2.12107
Optimization of food deprivation and sucrose preference test in SD rat model undergoing chronic unpredictable mild stress
Li-Wen He1
Li Zeng1
Na Tian2
Yi Li1
Tong He1
Dong-Mei Tan1
Qian Zhang1
Yi Tan1
1.Laboratory Animal Center, Chongqing Medical University, Chongqing, China2.Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
摘要：Background: The chronic unpredictable mild stress (CUMS) model has long been considered the best model for exploring the pathophysiological mechanisms underly-ing depression. However, there are no widely recognised standards for strategies for modeling and for behavioral testing. The present study aimed to optimize the proto-cols for food deprivation and the sucrose preference test (SPT) for the CUMS model. Methods: We first evaluated the effects of different long periods of food depriva-tion on the body weight of Sprague Dawley (SD) rats by testing food deprivation for 24 hours (8:00-8:00+), food deprivation for 12 hours during the daytime (8:00-20:00) and food deprivation for 12 hours at night (20:00-8:00+). Next, we established a SD rat CUMS model with 15 different stimulations, and used body weight measurement, SPT, forced swim test (FST), open field test (OFT) and Morris water maze (MWM) test to verify the success of the modeling. In the SPT, consumption of sucrose and pure water within 1 and 12 hours was measured.Results: Twelve hours of food deprivation during the daytime (8:00-20:00) had no effect on body weight, while 12 hours of food deprivation at night (20:00-8:00+) and 24 hours of food deprivation (8:00-8:00+) significantly reduced the mean body weight of the SD rats. When SPT was used to verify the successful establishment of the CUMS rat model, sucrose consumption measured within 12 hours was less vari-able than that measured within 1 hour. Conclusions: Twelve hours of food deprivation in the daytime (8:00-20:00) may be considered a mild stimulus for the establishment of a CUMS rat model. Measuring sucrose consumption over 12 hours is recommended for SPT.
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论文发表日期：2020-03-25
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：10( 69-78 )
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