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Liu, Meng-Ying; Yin, Chun-Yu; Zhu, Li-Juan; Zhu, Xian-Hui; Xu, Chu; Luo, Chun-Xia; Chen, Hongshan; Zhu, Dong-Ya; Zhou, Qi-Gang
Nature protocols, 07/2018, Volume: 13, Issue: 7Journal Article
Anhedonia is the inability to experience pleasure from rewarding or enjoyable activities and is a core symptom of depression in humans. Here, we describe a protocol for the measurement of anhedonia in mice, in which anhedonia is measured by a sucrose preference test (SPT) based on a two-bottle choice paradigm. A reduction in the sucrose preference ratio in experimental relative to control mice is indicative of anhedonia. To date, inconsistent and variable results have been reported following the use of the SPT by different groups, probably due to the use of different protocols and equipment. In this protocol, we describe how to set up a clearly defined apparatus for SPT and provide a detailed protocol to ensure greater consistency when carrying out SPT. This optimized protocol is highly sensitive, reliable, and adaptable for evaluation of chronic stress-related anhedonia, as well as morphine-induced dependence. The whole SPT, including adaptation, baseline measurement, and testing, takes 8 d.
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