Dopamine | DOPAC | DOPAC/Dopamine | |
---|---|---|---|
pmol/mg protein | |||
Subjective midday | 1.47 ± 0.13 | 1.66 ± 0.11 | 1.13 ± 0.13 |
Subjective midnight | 1.30 ± 0.11 | 0.95 ± 0.10** | 0.73 ± 0.093-150 |
Hamsters were kept under constant darkness for 48 h and sacrificed at the times indicated. Steady-state levels of dopamine and DOPAC were assessed as described in Table 1. DOPAC levels were significantly higher at subjective midday than at midnight, whereas no differences were found for dopamine content. Data are mean ± S.E. values (n = 10 animals per group).
↵3-150 P < .05, ** P < .01, Student's t test.