Table 1.

Cosinor analysis of the circadian rhythm of ingestion in Ucn-2 knock-out mice and their wild-type littermates

FemaleMale
Wild typeUcn-2 KOWild typeUcn-2 KO
Water intake
    Amplitude (μl/h)383 ± 54234 ± 24*254 ± 42201 ± 58
    MESOR (μl/h)304 ± 54254 ± 23206 ± 26215 ± 40
    Peak (μl/h)686 ± 101488 ± 28*462 ± 65415 ± 93
    Nadir (μl/h)−79 ± 4219 ± 38−47 ± 3014 ± 37
    Acrophase (h after dark onset)3.6 ± 0.53.9 ± 1.15.9 ± 0.14.6 ± 1.4
    Cosinor fit (r)0.75 ± 0.050.73 ± 0.070.83 ± 0.020.76 ± 0.06
Food intake
    Amplitude (mg/h)116 ± 16102 ± 11124 ± 24102 ± 6
    MESOR (mg/h)163 ± 12160 ± 12163 ± 12186 ± 19
    Peak (mgl/h)280 ± 6262 ± 18287 ± 32288 ± 17
    Nadir (mg/h)47 ± 2858 ± 1540 ± 2083 ± 21
    Acrophase (h after dark onset)3.7 ± 0.83.5 ± 0.74.6 ± 0.63.5 ± 0.8
    Cosinor fit (r)0.78 ± 0.070.85 ± 0.040.90 ± 0.020.90 ± 0.02
  • *p < 0.05 versus WT.