I don't know that it would make sense that an increase in plasma fatty acids would down regulate lipolysis. However, it would be in line with all the other negative feedback loops. On the other hand, since you speak of adrenaline, which is a fight-or-flee hormone, then it would also make sense that lipogenesis would go up to replenish what was used during the bout. On the third hand, I don't immediately see how that would fit when no carbohydrate were eaten. Maybe lipogenesis still goes up, only less so due to the lack of glycerol substrate.
On the last hand, since there is no glycerol substrate, or very little, then the fuel that will be used will come from the gut, not from the fat tissue. Consequently, the fat tissue will somewhat lose some of its former function and atrophy. Also, if I'm not mistaken, the fat released from fat tissue and the fat eaten go through different routes before they end up in the bloodstream and that could have some impact on all those variables. Also also, digestion is much more expensive than merely releasing fat that was stored and already in a form ready to use. This implies that eating fat would require some amount of fuel from the fat tissue, before the fat eaten could be utilized, thereby reducing the total fat stored further. This implies further that eating more fat would reduce this fat further still.
The system would shift toward putting fuel to digestion instead of everywhere else. A new homeostatic equilibrium would be reached at some point whereby the focus of fuel metabolism-utilization would be put on the gut, not on the fat tissue. Again one more reason for the fat tissue to lose its former function and atrophy.
Finally, maintaining all that fat, while not being so expensive to release from fat tissue, is rather expensive and some fuel would be diverted to it making it unavailable to other tissues who actually need it. This implies that being fat makes us more hungry.
And really finally, since the whole idea isn't merely to provide enough fuel to the gut but to provide enough fuel to the brain, and all other tissues that need it, the gut, indeed the whole system, would become quite efficient at digesting and metabolizing the fat eaten at some point and would require marginally less fuel. Thus making us satiated more quickly.
There's one thing I don't know, it's the time table for all these things to happen. I have no idea.
It's an extension of the "expensive tissue" idea that I just thought up. Here's Eades on the subject:
http://www.proteinpower.com/drmike/...arians-part-ii/
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