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Science 22 May 1981:
Vol. 212. no. 4497, pp. 917 - 919
DOI: 10.1126/science.7233183
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Articles

Science, Vol 212, Issue 4497, 917-919
Copyright © 1981 by American Association for the Advancement of Science

articles

Photoperiodic control and effects of melatonin on nonshivering thermogenesis and brown adipose tissue

G Heldmaier, S Steinlechner, J Rafael, and P Vsiansky

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.


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Functional Expression of MT2 (Mel1b) Melatonin Receptors in Human PAZ6 Adipocytes.
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Photoperiodic responses of four wild-trapped desert rodent species.
H. A. El-Bakry, W. M. Zahran, and T. J. Bartness (1998)
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Evidence that the Circadian System Mediates Photoperiodic Nonresponsiveness in Siberian Hamsters: The Effect of Running Wheel Access on Photoperiodic Responsiveness.
D. A. Freeman and B. D. Goldman (1997)
J Biol Rhythms 12, 100-109
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Photoperiod Nonresponsive Siberian Hamsters: Effect of Age on the Probability of Nonresponsiveness.
D. A. Freeman and B. D. Goldman (1997)
J Biol Rhythms 12, 110-121
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Winter Adaptations of Male Deer Mice (Peromyscus maniculatus ) and Prairie Voles (Microtus ochrogaster) That Vary in Reproductive Responsiveness to Photoperiod.
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Evidence for Genetic Variation in the Occurrence of the Photoresponse of the Djungarian Hamster, Phodopus sungorus.
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Evidence for Independence of Circadian Characters and Extent of Photoresponsiveness in the Djungarian Hamster, Phodopus sungorus.
R. M. Kliman and G. R. Lynch (1991)
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Photoperiod and Thermoregulation in Vertebrates: Body Temperature Rhythms and Thermogenic Acclimation.
G. Heldmaier, S. Steinlechner, T. Ruf, H. Wiesinger, and M. Klingenspor (1989)
J Biol Rhythms 4, 139-153
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Vertebrate Circadian and Photoperiodic Systems: Role of the Pineal Gland and Melatonin.
H. Underwood and B. D. Goldman (1987)
J Biol Rhythms 2, 279-315
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