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. 2020 Jun 19;11:3143. doi: 10.1038/s41467-020-16884-4

Fig. 1. Top3β-KO mice have higher anxiety and defective hippocampus-dependent cognitive functions.

Fig. 1

a, b Top3β-KO mice displayed increased anxiety behavior in elevated maze test, as evidenced by reduced staying time (a) and number of entries in light arm (b) (18 mice/group). c Top3β-KO mice exhibited increased anxiety behavior in light-dark box test, as shown by fewer entries into the light box (11 mice/group). d, e Top3β-KO mice showed abnormal behavior in sociability test, as revealed by increased latency to initiate the first interaction with the other mouse in three-chamber sociability test (d), and increased nose-to-nose sniffing interaction in reciprocal social interaction test (e) (12 mice per group). fh Top3β-KO mice displayed increased fear behaviors, as revealed by longer freezing time in training (f), context (g), and cue (h) test of the FC test (9 WT and 10 KO). The FC paradigm is in (Supplementary Fig. 1a). i, j Top3β-KO mice exhibited impaired ability to discriminate between a shock-paired context (A) and a neutral context (B). The paradigm is in Supplementary Fig. 1b. During training, Top3β-KO mice exhibited a significant longer freezing time when placed in context B, unlike the WT mice that showed similar short freezing time in both contexts (i). In the test day, Top3β-KO mice exhibited reduced discrimination index (j), as defined by a ratio in difference in freezing time between context A and B vs. the total freezing time. 11 WT and 12 KO mice were used. k, l Top3β-KO mice exhibited reduced learning and memory behaviors in water maze test, as revealed by longer time in finding the hidden platform (k), and explored longer average distance to the position of the platform (l) (7 mice/group). Two-tail Student t test was used for (ah, j–l). Two-way ANOVA test was used for (i) in statistical analysis. P-value (a) 0.0414, (b) 0.0002, (c) 0.0149, (d) 0.0217, (e) 0.0369, (f) 0.0416, (g) 0.0131, (h) 0.0282, (i) 0.0136, (j) 0.0323, (k) 0.0455, (l) 0.0389. P-values < 0.05, 0.01, and 0.001 are marked as: *, **, ***, respectively. Data are presented as mean values ± SEM. Source data are provided as a Source Data file.