Male D2KO mice weight gain and body fat on a HFD.

<p>(A) Body weight of wild type and D2KO mice on chow or a HFD for 6-weeks, n = 22–24 mice/genotype for HFD group, n = 5 mice/genotype for chow group. A significant interaction between genotype and diet were determined by two-way ANOVA for repeated measures (p<0.001; F = 33.55; Df = 312). After Bonferroni correction, there was a significant difference in weight gain of D2KO vs. WT after 4, 5 and 6 weeks of diet (p<0.05, 0.01 and 0.001). (B) Weight gain expressed as % of initial weight after 6 weeks on either chow or a HFD of mice shown in (A). Two-way ANOVA indicated a significant interaction between genotype and diet (2WA g×d) (p<0.05; F = 7.11; Df = 52). (C) % body fat as determined by microCT, n = 4–5 mice/group. Two-way ANOVA indicated a significant interaction between genotype and diet (p<0.05; F = 4.87; Df = 15). (D) Density of voxels falling in the Hounsfield Unit range defined for adipose tissue of a representative wild type and D2KO mouse. Red is more dense while purple is less in the colorbar range. (E) Average food intake of wild type and D2KO mice on either a chow or HFD was monitored for 7 days at 3 weeks of diet and is shown expressed as kcal/day/mouse. Two-way ANOVA indicated that diet significantly effected the overall caloric consumption independent of genotype (2WA d) (p<0.01; F = 10.25; Df = 16). When a significant interaction between genotype and diet was found individual means were compared within groups by unpaired Student's t-test. Data presented are the mean ± SEM; * = p<0.05, ** = p<0.01, *** = p<0.001, ns = not significant.</p>

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