Author(s): Heldmaier G, Steinlechner S, Rafael J, Vsiansky P
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Abstract Exposure to a short photoperiod improved the thermogenic capacity, and cold resistance of Djungarian hamsters and increased the respiratory power of their brown adipose tissue. Exposure to a long photoperiod caused a decrease in thermogenic measurements. This thermotropic action of the short photoperiod was detectable only during late summer and fall. A similar thermotropic response could be elicited by implanting hamsters with melatonin, indicating that the pineal may be involved in photoperiodic control of thermoregulatory effectors.
This article was published in Science
and referenced in Journal of Physiotherapy & Physical Rehabilitation