Research Article

Spontaneously Diabetic Torii (SDT) Fatty Rat, a Novel Animal Model of Type 2 Diabetes Mellitus, Shows Blunted Circadian Rhythms and Melatonin Secretion

Figure 1

Circadian rhythm of spontaneous locomotor activity (SLA) in control Sprague–Dawley (SD) and Spontaneously Diabetic Torii (SDT) fatty rats. (a) Hourly averages of SLA over a 24 h period for 5 consecutive days under a standard light–dark cycle (the shaded area indicates the dark phase). (b) Total activity during the light and dark phases in control SD and SDT fatty rats. Data are mean ± SEM ( in each group). compared with control SD rats (Aspin-Welch test).
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