Ammonia can be produced by the break-down of amino acids, or by the gut bacteria in humans. If the level of ammonia in the blood becomes too high, then it becomes toxic to the brain. The urea cycle ...

Urea cycle disorders are congenital diseases that are caused by a dysfunctional urea cycle. The genetics and biochemistry of these disorders have been extensively studied. They are the result of a ...

What determines whether astrocytes play a beneficial or detrimental role in Alzheimer’s disease? It’s surely complicated, but a study in the June 10 online Cell Metabolism lays some of the blame on ...