fat

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Shivering is one mechanism by which heat is produced in the body. Heat production is called thermogenesis. Another mechanism is through nonshivering thermogenesis regulated by brown fat (i.e. adipose). This second type of heating mechanism kicks in when we need extra heat production such as a postnatal infant, someone developing a fever, an animal arousing…

Rare fatty antifreeze

I have heard of some animals using sugars as antifreeze (check out the prior blog on wood frogs that freeze and survive!), but never lipids. Researchers have discovered that larva of the Goldenrod gall fly (Eurosta solidaginis) shown above survive nearly freezing solid as well, which they hypothesize may be accomplished by accumulating acetylated triacylglycerol,…

Building bones from fat

Drs. Chia Soo and Bruno Péault, from the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, have found a way to turn stem cells from fat tissue into bone of higher quality than that grown with prior techniques. The mesenchymal stem cells (MSCs) isolated from the fat tissue may develop into bone,…