Rat tail skin temperature regulation by estrogen, phytoestrogens and tamoxifen

Maturitas ◽  
2004 ◽  
Vol 48 (4) ◽  
pp. 463-471 ◽  
Author(s):  
Evan E Opas ◽  
Su Jane Rutledge ◽  
Robert L Vogel ◽  
Gideon A Rodan ◽  
Azriel Schmidt
Maturitas ◽  
2009 ◽  
Vol 64 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Evan E. Opas ◽  
Angela Scafonas ◽  
Pascale V. Nantermet ◽  
Robert R. Wilkening ◽  
Elizabeth T. Birzin ◽  
...  

1965 ◽  
Vol 20 (1) ◽  
pp. 31-36 ◽  
Author(s):  
C. H. Wyndham

The response characteristics have been studied of the curves relating heat conductance and sweat rate to change in rectal temperature at different levels of skin temperature, and vice versa. The increase in these responses with deviation in rectal temperature from the “neutral” setting is highly nonlinear; the neutral point and the curve shift to the right and the slope decreases with lowering of skin temperature and vice versa when it is raised. With further deviation of rectal temperature these responses reach maximum values, i.e., become “saturated.” All of these features are analogous to servomechanisms with negative feedback, giving sensitive and stable control. Control of these responses by skin temperature is more linear, characterizing passive control systems which are insensitive and less stable. Quantitatively, the effect at skin temperature of 26 C of 1 C rise in rectal temperature on heat conductance and sweat rate is 10 times greater than the same rise in skin temperature; at a neutral skin temperature of 33–34 C, a rise of 1 C in rectal temperature is 6–7 times greater; at a high skin temperature of 36 C, a rise in rectal temperature of 1 C is 4–5 times greater. relationship between heat conductance and a change in either rectal or skin temperatures; relationship between sweat rate and a change in either rectal or skin temperatures; response characteristics of curves relating heat conductance to change in either rectal or skin temperatures; response characteristics of curves relating sweat rate to change in either rectal or skin temperatures; assessment of the contribution of skin and rectal temperatures to man's temperature regulation Submitted on October 22, 1963


2018 ◽  
Vol 66 (5) ◽  
pp. 1251-1257 ◽  
Author(s):  
Hiroshi Ashigai ◽  
Yoshimasa Taniguchi ◽  
Yasuko Matsukura ◽  
Emiko Ikeshima ◽  
Keiko Nakashima ◽  
...  

SLEEP ◽  
2006 ◽  
Vol 29 (11) ◽  
pp. 1444-1449 ◽  
Author(s):  
Rolf Fronczek ◽  
Sebastiaan Overeem ◽  
Gert Jan Lammers ◽  
J. Gert van Dijk ◽  
Eus J. W. van Someren

2015 ◽  
Vol 16 (3) ◽  
pp. 207-213 ◽  
Author(s):  
Johanna C.M. Schilder ◽  
Sjoerd P. Niehof ◽  
Johan Marinus ◽  
Jacobus J. van Hilten

Body-temperature regulation has been studied in two communities in New Guinea. On Karkar Island in the hotter coastal region, 40 young adult males and the same number of young female villagers, together with 39 plantation workers and 14 Europeans, were examined. At Lufa, near Goroka, in the cooler and drier highlands, 30 male and 25 female adult villagers, together with 36 older people, were investigated. Tem perature regulation was studied using an air-conditioned bed in which the subjects received standardized exposures to cool and warm environments and the sweating response was measured during controlled hyperthermia at 38 °C. The results did not reveal any important difference in response between the coastal villagers and the highland people. The Europeans living on Karkar Island had the high sweating capacity which is characteristic of the acclimatized European, whereas the sweat rates of the New Guinea people were closely comparable to the level for an unacclimatized European. Comparison of the two sexes showed the lower sweat rates and the pattern of deep body and skin temperature changes found in women in previous studies using this technique. The changes in deep body temperature, skin temperature, blood flow and heart rate during the successive periods of exposure to a thermally neutral climate, with cooling and during rewarming, do not indicate that the indigenes of New Guinea utilize the vasomotor control mechanism more efficiently than Europeans.


1980 ◽  
Vol 10 (4) ◽  
pp. 217-221 ◽  
Author(s):  
John C. Grabert ◽  
Norman J. Bregman ◽  
Hunter A. McAllister

Author(s):  
Naseem Asma ◽  
Malik Shalie

Light, the most abundant and important stimuli, can be sensed by a single photon by the photoreceptors. These photoreceptors are usually a group of protein of GPCR (G protein-coupled receptor) family. Opsins, a group of this family absorb these photons and processes both image forming and non-image forming phototransduction. Initially, their role was only limited to image formation, but recent studies reveal their importance in non -image forming functions also. In this review, we discussed various roles of opsins other than image formation, such as in photorelaxation of blood vessels, mechanoreception of skin, temperature regulation, hearing, immune system, thermotaxis of sperms, photosensation as well as in reproduction. These various functions of opsins show their immense importance in non-image forming functions as well as their evolutionary importance.


1975 ◽  
Vol 53 (2) ◽  
pp. 202-206 ◽  
Author(s):  
B. Hellström

The vasomotor response of the tail of the albino rat to total-body heating and cooling was studied by skin-temperature recording and plethysmography with the tail at 25 °C air temperature. Tail vasodilatation started at core temperatures slightly above 37 °C and increased to a core temperature up to about 39 °C. During cooling of warm rats, tail vasoconstriction started at significantly higher levels of core temperature than the values at which vasodilatation appeared when the rat was warmed.


1961 ◽  
Vol 16 (1) ◽  
pp. 119-122 ◽  
Author(s):  
D. A. Blair ◽  
W. E. Glover ◽  
I. C. Roddie

Simultaneous measurements of skin temperature of various skin areas of the body were made during indirect cooling and heating of the body. Cooling the body caused a much larger fall in the nose and finger temperature than in mouth temperature, indicating active vasoconstriction in these areas. In the ear, cheek, chest and forehead there was no evidence for vasoconstriction. Evidence of vasodilatation in all the skin areas studied was obtained when the body was indirectly heated. Blocking the vasomotor nerves to the ear resulted in a large increase in skin temperature and, during body heating, the skin temperature of the normal ear did not exceed that of the nerve-blocked ear. It was concluded that the changes in ear blood flow subserving temperature regulation are mainly due to alterations in vasoconstrictor tone. In the chest and cheek, cutaneous nerve block did not alter skin temperature, yet it reduced the rise in skin temperature normally seen during body heating. It was concluded that the vasodilatation normally seen in these areas is not due to release of vasoconstrictor tone, but rather to an active vasodilator mechanism, mediated through fibers running with the cutaneous nerves. Submitted on May 27, 1960


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