Abstract
1. To test whether the preoptic area controls only non-shivering and the spinal cord only shivering thermogenesis, ten rats were chronically implanted with a preoptic and a spinal cord thermode each. The following were then studied: (a) the effect of propranolol (8 mg/kg.hr) on the metabolic response to cooling the preoptic area, and the spinal cord, (b) the effect of exogenous noradrenaline (0.5 mg/kg) on the metabolic response to cooling the preoptic area, and the spinal cord, and (c) the effect of warming the preoptic area on the metabolic response to cooling the spinal cord, and vice versa. 2. Administration of propranolol inhibited the metabolic response to cooling each of the thermosensitive areas, but the response to cooling the preoptic area was more strongly inhibited than that to cooling the spinal cord. 3. Administration of exogenous noradrenaline did not prevent the metabolic response to cooling either the preoptic area or the spinal cord. 4. Warming the spinal cord completely inhibited the metabolic response to cooling the preoptic area, and warming the preoptic area fully inhibited the metabolic response to cooling the spinal cord. 5. It is concluded that exogenous noradrenaline underestimates the capacity for non-shivering thermogenesis, and that both thermosensitive areas can control both forms of thermogenesis, but that the preoptic area threshold of non-shivering thermogenesis is probably lower than that of shivering, while the spinal cord threshold of shivering is probably lower than that of non-shivering thermogenesis.
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- Alexander G., Williams D. Shivering and non-shivering therogenesis during summit metabolism in young lambs. J Physiol. 1968 Sep;198(2):251–276. doi: 10.1113/jphysiol.1968.sp008605. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Banet M., Hensel H. Nonshivering thermogenesis induced by repetitive cooling of spinal cord in the rat. Am J Physiol. 1976 Mar;230(3):720–723. doi: 10.1152/ajplegacy.1976.230.3.720. [DOI] [PubMed] [Google Scholar]
- Banet M., Hensel H. Nonshivering thermogenesis induced by repetitive hypothalamic cooling in the rat. Am J Physiol. 1976 Feb;230(2):522–526. doi: 10.1152/ajplegacy.1976.230.2.522. [DOI] [PubMed] [Google Scholar]
- Banet M., Hensel H., Pothmann B. Autonomic thermoregulation after intermittent cooling of the spinal cord and cold exposure in the rat. J Physiol. 1978 Feb;275:439–447. doi: 10.1113/jphysiol.1978.sp012199. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Banet M., Hensel H. The control of shivering and non-shivering thermogenesis in the rat. J Physiol. 1977 Aug;269(3):669–676. doi: 10.1113/jphysiol.1977.sp011921. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Banet M., Hensel H. The interaction between cutaneous and spinal therman inputs in the control of oxygen consumption in the rat. J Physiol. 1976 Sep;260(2):461–473. doi: 10.1113/jphysiol.1976.sp011525. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Banet M., Séguin J. J. A thermode for rat brain. Electroencephalogr Clin Neurophysiol. 1967 Dec;23(6):572–573. doi: 10.1016/0013-4694(67)90027-2. [DOI] [PubMed] [Google Scholar]
- Evans S. E., Ingram D. L. The significance of deep body temperature in regulating the concentration of thyroxine in the plasma of the pig. J Physiol. 1974 Jan;236(1):159–170. doi: 10.1113/jphysiol.1974.sp010428. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fuller C. A., Horowitz J. M., Horwitz B. A. Spinal cord thermosensitivity and sorting of neural signals in cold-exposed rats. J Appl Physiol Respir Environ Exerc Physiol. 1977 Feb;42(2):154–158. doi: 10.1152/jappl.1977.42.2.154. [DOI] [PubMed] [Google Scholar]
- Fuller C. A., Horwitz B. A., Horowitz J. M. Shivering and nonshivering thermogenic responses of cold-exposed rats to hypothalamic warming. Am J Physiol. 1975 May;228(5):1519–1524. doi: 10.1152/ajplegacy.1975.228.5.1519. [DOI] [PubMed] [Google Scholar]
- HEMINGWAY A. Shivering. Physiol Rev. 1963 Jul;43:397–422. doi: 10.1152/physrev.1963.43.3.397. [DOI] [PubMed] [Google Scholar]
- HSIEH A. C., CARLSON L. D., GRAY G. Role of the sympathetic nervous system in the control of chemical regulation of heat production. Am J Physiol. 1957 Aug;190(2):247–251. doi: 10.1152/ajplegacy.1957.190.2.247. [DOI] [PubMed] [Google Scholar]
- HSIEH A. C., CARLSON L. D. Role of adrenaline and noradrenaline in chemical regulation of heat production. Am J Physiol. 1957 Aug;190(2):243–246. doi: 10.1152/ajplegacy.1957.190.2.243. [DOI] [PubMed] [Google Scholar]
- Heim T., Hull D. The effect of propranalol on the calorigenic response in brown adipose tissue of new-born rabbits to catecholamines, glucagon, corticotrophin and cold exposure. J Physiol. 1966 Nov;187(2):271–283. doi: 10.1113/jphysiol.1966.sp008088. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Horwitz B. A., Hanes G. E. Propranolol and pyrogen effects of shivering and nonshivering thermogenesis in rats. Am J Physiol. 1976 Mar;230(3):637–642. doi: 10.1152/ajplegacy.1976.230.3.637. [DOI] [PubMed] [Google Scholar]
- Janský L. Non-shivering thermogenesis and its thermoregulatory significance. Biol Rev Camb Philos Soc. 1973 Feb;48(1):85–132. doi: 10.1111/j.1469-185x.1973.tb01115.x. [DOI] [PubMed] [Google Scholar]
- Leblanc J., Villemaire A. Throxine and noradrenaline on noradrenaline sensitivity, cold resistance, and brown fat. Am J Physiol. 1970 Jun;218(6):1742–1745. doi: 10.1152/ajplegacy.1970.218.6.1742. [DOI] [PubMed] [Google Scholar]
- Myhre L., Röed A., Aars H. Inhibitory effect of propranolol on tetanic contraction in rabbit. Eur J Pharmacol. 1977 Apr 21;42(4):355–361. doi: 10.1016/0014-2999(77)90169-8. [DOI] [PubMed] [Google Scholar]
- RAND R. P., BURTON A. C., ING T. THE TAIL OF THE RAT, IN TEMPERATURE REGULATION AND ACCLIMATIZATION. Can J Physiol Pharmacol. 1965 Mar;43:257–267. doi: 10.1139/y65-025. [DOI] [PubMed] [Google Scholar]
- SATINOFF E. BEHAVIORAL THERMOREGULATION IN RESPONSE TO LOCAL COOLING OF THE RAT BRAIN. Am J Physiol. 1964 Jun;206:1389–1394. doi: 10.1152/ajplegacy.1964.206.6.1389. [DOI] [PubMed] [Google Scholar]
- Schönbaum E., Johnson G. E., Sellers E. A., Gill M. J. Adrenergic beta-receptors and non-shivering thermogenesis. Nature. 1966 Apr 23;210(5034):426–426. doi: 10.1038/210426a0. [DOI] [PubMed] [Google Scholar]
- Stoner H. B. Effect of injury on the responses to thermal stimulation of the hypothalamus. J Appl Physiol. 1972 Nov;33(5):665–671. doi: 10.1152/jappl.1972.33.5.665. [DOI] [PubMed] [Google Scholar]