Gastrointestinal transit but not corticosterone levels differed between
Balb/cJ and C57Bl/6J mice. A) The mean proportion (± SEM) of 10kDa
RITC-dextran recovered from the lumen of five different segments of the
gastrointestinal tract four hours after eating the egg yolk meal is plotted for
Balb/cJ (N=12; closed bars) and C57Bl/6J mice (N=6; open bars). *P<0.05,
2-way ANOVA, Bonferroni’s Multiple Comparisons Test compared to C57Bl6
mice. †P<0.0001, 2-way ANOVA, Bonferroni’s Multiple
Comparisons Test compared to C57Bl6 mice. B) Mean blood corticosterone levels
(± SEM) in resting C57Bl6 mice (N=5) and C57Bl6 (N=9) and Balb/c (N=6)
mice that had just completed a solid gastric emptying breath test.
‡P<0.05, ANOVA, Neuman-Keuls Multiple Comparisons test compared
to resting C57Bl6 mice. C) Plot of T1/2 values from solid gastric
emptying breath tests versus post-test corticosterone levels for Balb/cJ (open
symbols) and C57Bl/6J (closed symbols) mice. There was no correlation between
these measures (P>0.05, Pearson Correlation).