Table 1 showed the 1 day average number of visits for all sessions. In all the
groups, the animals visited the corners more during nocturnal period than during diurnal period (control females total and control males total: P < 0.0001, BPA females total and BPA males total: P < 0.001, Wilcoxon rank sum test), and the number of visits without drinking was significantly BIIB057 solubility dmso higher than those of visits Inhibitors,research,lifescience,medical with drinking except BPA male diurnal period (control females: P < 0.0001, BPA females: P < 0.05, control males nocturnal: P < 0.0001, control males diurnal: P < 0.05, BPA males nocturnal: P < 0.05, Wilcoxon rank sum test). The BPA-exposed female group showed significantly lower values for the average number of total visits and visits without drinking during the diurnal period (P < 0.01, Tukey's HSD). However, there was no difference shown between the male Inhibitors,research,lifescience,medical groups. Table 1 Average number of corner visits during all of the IntelliCage sessions
While no difference was shown in the number of visits by male animals between the control and the BPA groups, a significant difference was shown in the visit durations between those male groups during the nocturnal period without drinking (Fig. 1B), but not with drinking (Fig. 1C). During the diurnal period, visit duration with or without drinking was higher in the BPA males, compared Inhibitors,research,lifescience,medical with control males (Fig. 1E and F), whereas females showed no changes between the control and BPA groups. BPA-exposed males stayed at corners for a significantly longer period of time, compared with the control animals in almost all situations, whereas
the female animals did not show any significant differences (Fig. 1A and D). Figure 1 Corner visit duration was disrupted Inhibitors,research,lifescience,medical in male mice throughout the sessions: The upper rows (A, B, C) and the lower rows (D, E, F) show nocturnal (16 days total) and diurnal (15 days total) results, respectively. The left column (A, D) shows the total visits, … Nose poke Nose poke behavior was one of the other parameters Inhibitors,research,lifescience,medical we were able to assess with the IntelliCage. We thus analyzed nocturnal nose poke indices; the total number of nose pokes, the average number of nose poke per visit, and the ratio of the number of nose pokes with drinking to the total number of nose pokes. The results showed no significant difference between the BPA-exposed groups and the controls. In regard to sex differences, the female second mice performed nose pokes more frequently than the male animals (females: 6820 ± 1669, males: 4918 ± 1218, P < 0.0001, Wilcoxon rank sum test). The average number of nose pokes per visit was significantly higher in the females, compared with the males (females: 2.7 ± 0.6, males: 2.2 ± 0.4, P < 0.01, Wilcoxon rank sum test). The ratio of the number of nose pokes with drinking to the total number of nose pokes was higher in the male animals, compared with the females (females: 17.9 ± 5.7, males: 28.3 ± 13.1, P < 0.