A mathematical model of melatonin synthesis and interactions with the circadian clock.
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| Title: | A mathematical model of melatonin synthesis and interactions with the circadian clock. |
|---|---|
| Authors: | Best, Janet1 (AUTHOR) best.82@osu.edu, Kim, Ruby2 (AUTHOR), Reed, Michael3 (AUTHOR), Nijhout, H. Frederik4 (AUTHOR) |
| Source: | Mathematical Biosciences. Nov2024, Vol. 377, pN.PAG-N.PAG. 1p. |
| Subjects: | Jet lag, Cerebrospinal fluid, Sleep disorders, Suprachiasmatic nucleus, Melatonin, Serotonin |
| Abstract: | A new mathematical model of melatonin synthesis in pineal cells is created and connected to a slightly modified previously created model of the circadian clock in the suprachiasmatic nucleus (SCN). The SCN influences the production of melatonin by upregulating two key enzymes in the pineal. The melatonin produced enters the blood and the cerebrospinal fluid and thus the SCN, influencing the circadian clock. We show that the model of melatonin synthesis corresponds well with extant experimental data and responds similarly to clinical experiments on bright light in the middle of the night. Melatonin is widely used to treat jet lag and sleep disorders. We show how the feedback from the pineal to the SCN causes phase resetting of the circadian clock. Melatonin doses early in the evening advance the clock and doses late at night delay the clock with a dead zone in between where the phase of the clock does not change. [Display omitted] • New model of the synthesis of melatonin connected bidirectionally to circadian clock. • The model predicts well experimental and clinical data. • Influence of melatonin on Per expression explains shape of phase response curve.. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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