Ahanu
Member
- Joined
- Sep 13, 2015
- Messages
- 432
As we take our temperature and heart rate to measure our metabolism it is very interesting to know how and what mechanisms come into play. This study shows a part, i guess:
"The thyroid produces hormones that are able to influence how much the blood vessels dilate. In turn, this affects how much heat can escape the body."
Dr. Warner said that until now, temperature sensitivity as a result of thyroid disorders has been attributed solely to the basal metabolic rate effects of too much or too little thyroid hormone.
"However, this study shows that thyroid hormone's role in the vascular control of body temperature may be of particular importance," she added.
Shown through infrared imaging, at room temperature, the tail blood vessels do not constrict properly, and too much heat is lost. The mice cannot defend their body temperature correctly, and therefore need to generate heat from their brown fat to keep warm. Activation of brown fat requires an increase in energy demands to maintain, hence why these mice have a higher metabolism, despite being hypothyroid."
http://www.medicalnewstoday.com/articles/266255.php
"The thyroid produces hormones that are able to influence how much the blood vessels dilate. In turn, this affects how much heat can escape the body."
Dr. Warner said that until now, temperature sensitivity as a result of thyroid disorders has been attributed solely to the basal metabolic rate effects of too much or too little thyroid hormone.
"However, this study shows that thyroid hormone's role in the vascular control of body temperature may be of particular importance," she added.
Shown through infrared imaging, at room temperature, the tail blood vessels do not constrict properly, and too much heat is lost. The mice cannot defend their body temperature correctly, and therefore need to generate heat from their brown fat to keep warm. Activation of brown fat requires an increase in energy demands to maintain, hence why these mice have a higher metabolism, despite being hypothyroid."
http://www.medicalnewstoday.com/articles/266255.php
