Regional skin temperature changes in a rat model for the menopausal hot flush

Maturitas ◽  
1986 ◽  
Vol 8 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Michael J. Katovich ◽  
James W. Simpkins ◽  
Lee Ann Berglund ◽  
June O'Meara
Keyword(s):  
Skin Temperature ◽  
Rat Model ◽  
Temperature Changes ◽  
Hot Flush

Measuring Facial Skin Temperature Changes Caused by Mental Work-Load with Infrared Thermography

2016 ◽  
Vol 136 (11) ◽  
pp. 1581-1585 ◽  
Author(s):  
Tota Mizuno ◽  
Takeru Sakai ◽  
Shunsuke Kawazura ◽  
Hirotoshi Asano ◽  
Kota Akehi ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Infrared Thermography ◽  
Work Load ◽  
Facial Skin ◽  
Mental Work ◽  
Temperature Changes ◽  
Mental Work Load

scholarly journals ICI 182,780 Penetrates Brain and Hypothalamic Tissue and Has Functional Effects in the Brain after Systemic Dosing

Endocrinology ◽  
2008 ◽  
Vol 149 (10) ◽  
pp. 5219-5226 ◽  
Author(s):  
Peter D. Alfinito ◽  
Xiaohong Chen ◽  
James Atherton ◽  
Scott Cosmi ◽  
Darlene C. Deecher
Keyword(s):  
Body Weight ◽  
Skin Temperature ◽  
Ethinyl Estradiol ◽  
Ovariectomized Rats ◽  
Ici 182,780 ◽  
Hot Flush ◽  
Hypothalamic Tissue ◽  
Dependent Model ◽  
The Brain ◽  
Neuroendocrine Functions

Previous reports suggest the antiestrogen ICI 182,780 (ICI) does not cross the blood-brain barrier (BBB). However, this hypothesis has never been directly tested. In the present study, we tested whether ICI crosses the BBB, penetrates into brain and hypothalamic tissues, and affects known neuroendocrine functions in ovariectomized rats. Using HPLC with mass spectrometry, ICI (1.0 mg/kg·d, 3 d) was detected in plasma and brain and hypothalamic tissues for up to 24 h with maximum concentrations of 43.1 ng/ml, and 31.6 and 38.8 ng/g, respectively. To evaluate antiestrogenic effects of ICI in the brain after systemic dosing, we tested its ability to block the effect of 17 α-ethinyl estradiol (EE) (0.3 mg/kg, 8 d) on tail-skin temperature abatement in the morphine-dependent model of hot flush and on body weight change. In the morphine-dependent model, EE abated 64% of the naloxone-induced tail-skin temperature increase. ICI pretreatment (1.0, 3.0 mg/kg·d) dose dependently inhibited this effect. ICI (3.0 mg/kg·d) alone showed estrogenic-like actions, abating 30% the naloxone-induced flush. In body weight studies, EE-treated rats weighed 58.5 g less than vehicle-treated rats after 8 d dosing. This effect was partially blocked by ICI (3.0 mg/kg·d) pretreatment. Similar to EE treatment, rats receiving 1.0 or 3.0 mg/kg·d ICI alone showed little weight gain compared with vehicle-treated controls. Thus, ICI crosses the BBB, penetrates into brain and hypothalamic tissues, and has both antiestrogenic and estrogenic-like actions on neuroendocrine-related functions.

scholarly journals Fertilisation rate obtained with frozen-thawed boar semen supplemented with rosmarinic acid using a single insemination timed according to vulvar skin temperature changes

2015 ◽  
Vol 63 (1) ◽  
pp. 100-109 ◽  
Author(s):  
Victoria Luño ◽  
Lydia Gil ◽  
Maite Olaciregui ◽  
Juan Grandía ◽  
Trinidad Ansó ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Artificial Insemination ◽  
Rosmarinic Acid ◽  
Intrauterine Insemination ◽  
Fertility Rates ◽  
Temperature Changes ◽  
Progressive Motility ◽  
A Value ◽  
Fertilisation Rate ◽  
Boar Semen

Artificial insemination (AI) of sows with frozen-thawed semen usually results in lower pregnancy rates and litter sizes than the use of liquid preserved semen. The present study evaluated the effectiveness of vulvar skin temperature changes as a predictor of ovulation in sows and determined the fertility rates obtained after AI with frozen-thawed semen supplemented with rosmarinic acid (RA). Semen was collected from mature boars and cryopreserved in experimental extenders supplemented with or without 105 μM of RA. Multiparous sows were inseminated with a single dose of semen when vulvar skin temperature decreased to a value below 35 °C. Intrauterine insemination was performed using 1.5 × 109 spermatozoa. The sows were slaughtered 48 h after AI and the embryos and oocytes were recovered from the oviducts. Total and progressive motility, viability and acrosome integrity were significantly (P < 0.05) higher in RA-supplemented semen samples compared with the control. Fertilisation occurred in all sows inseminated in the study, although there were no significant differences between the experimental groups. Sows inseminated with RA-supplemented semen showed a slight increase in the number of embryos recovered as compared to sows inseminated with control semen. In conclusion, insemination according to vulvar skin temperature changes resulted in successful fertilisation in all sows, although supplementation of the freezing media with RA did not improve the fertilising ability of frozen-thawed boar sperm.

Is There a Difference between the Effects of One-Point and Three-Point Indirect Moxibustion Stimulation on Skin Temperature Changes of the Posterior Trunk Surface?

2012 ◽  
Vol 30 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Hidetoshi Mori ◽  
Tim Hideaki Tanaka ◽  
Hiroshi Kuge ◽  
Ken Sasaki
Keyword(s):  
Skin Temperature ◽  
Single Point ◽  
Indirect Moxibustion ◽  
Thermal Stimulation ◽  
Acupuncture Points ◽  
Lumbar Region ◽  
Temperature Changes ◽  
Posterior Trunk ◽  
The One ◽  
Stimulation Group

Objective To determine whether any difference exists in responses to indirect moxibustion relative to thermal stimulation sites. Methods Twenty one healthy men of mean±SD age 22.5±6.1 years were randomly divided into two groups, one receiving a single moxibustion stimulation in three locations (the three-point stimulation group, n=10 participants) and the other receiving three stimulations in one location (the one-point stimulation group, n=11 participants). The thermal stimulation sites were GV14, GV9 and GV4 acupuncture points. A thermograph was used to obtain the skin temperature on the posterior trunks of the participants. To analyse skin temperature, four arbitrary frames (the scapular, interscapular, lumbar and vertebral regions) were made on the posterior trunk. Result An increase in skin temperature on the posterior trunk was observed following both one- and three-point moxibustion administrations. The skin temperature of the lumbar region showed a significant increase after three-point stimulation compared with single-point stimulation (p=0.011). There was also a significant increase in skin temperature of the spinal region after three-point stimulation compared with one-point stimulation (p=0.046). Conclusion Administration of single moxibustion doses on the GV14, GV9 and GV4 points produces greater changes in skin temperature than three applications of moxibustion to the GV14 point only.

Ankle Skin Temperature Changes Following Ice Bag Application With Compression at Varying Levels of Elevation

2017 ◽  
Vol 9 (4) ◽  
pp. 163-168 ◽  
Author(s):  
Jonathan M. Burke ◽  
Austin R. Herman ◽  
Blaine C. Long ◽  
Kevin C. Miller
Keyword(s):  
Skin Temperature ◽  
Temperature Changes

scholarly journals Contactless Monitoring of Microcirculation Reaction on Local Temperature Changes

2019 ◽  
Vol 9 (22) ◽  
pp. 4947 ◽  
Author(s):  
Volynsky ◽  
Margaryants ◽  
Mamontov ◽  
Kamshilin
Keyword(s):  
Blood Flow ◽  
Skin Temperature ◽  
Polarized Light ◽  
Thermal Exposure ◽  
Thermal Impact ◽  
Vasomotor Response ◽  
Temperature Changes ◽  
Custom Made ◽  
Electrocardiogram Ecg ◽  
System Operating

Assessment of skin blood flow is an important clinical task which is required to study mechanisms of microcirculation regulation including thermoregulation. Contactless assessment of vasomotor reactivity in response to thermal exposure is currently not available. The aim of this study is to show the applicability of the imaging photoplethysmography (IPPG) method to measure quantitatively the vasomotor response to local thermal exposure. Seventeen healthy subjects aged 23 ± 7 years participated in the study. A warm transparent compress applied to subject’s forehead served as a thermal impact. A custom-made IPPG system operating at green polarized light was used to monitor the subject’s face continuously and simultaneously with skin temperature and electrocardiogram (ECG) recordings. We found that the thermal impact leads to an increase in the amplitude of blood pulsations (BPA) simultaneously with the skin temperature increase. However, a multiple increase in BPA remained after the compress was removed, whereas the skin temperature returned to the baseline. Moreover, the BPA increase and duration of the vasomotor response was associated with the degree of external heating. Therefore, the IPPG method allows us to quantify the parameters of capillary blood flow during local thermal exposure to the skin. This proposed technique of assessing the thermal reactivity of microcirculation can be applied for both clinical use and for biomedical research.

Sweating responses during changes of hypothalamic temperature in the rhesus monkey

1976 ◽  
Vol 40 (5) ◽  
pp. 653-657 ◽  
Author(s):  
K. A. Smiles ◽  
R. S. Elizondo ◽  
C. C. Barney
Keyword(s):  
Rhesus Monkey ◽  
Skin Temperature ◽  
Sweat Rate ◽  
Brain Temperature ◽  
Hypothalamic Area ◽  
Indirect Measurements ◽  
Hypothalamic Temperature ◽  
Temperature Changes ◽  
Experimental Analogue ◽  
The Brain

A technique is presented for preparing a durable thermode implant in the hypothalamus of the rhesus monkey. In unanesthetized monkeys implanted with thermodes in the anterior hypothalamic area of the brain, a linear relation was found between local sweat rates on the general body surface and clamped hypothalamic temperature. Changes in skin temperature were found to shift the hypothalamic set-point temperature at which sweating began but did not alter the gain of the hypothalamic temperature-sweat rate relationship. This study provides direct support for the concept that central brain temperature and skin temperature interact additively in the control of sweating in higher primates. Due to the very close similarity between these responses and those seen with indirect measurements of brain temperature in men, the rhesus monkey is seen as an excellent experimental analogue for studying human thermoregulation.

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