In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.

Q: Loss of Calcium/Calmodulin-Dependent Protein Kinase II Activity in Cortical Astrocytes Decreases Glutamate Uptake and Induces Neurotoxic Release of ATP.

A: Glutamate
****
Q: Characterization of the substrate mimic bound to engineered prostacyclin synthase in solution using high-resolution NMR spectroscopy and mutagenesis: implication of the molecular mechanism in biosynthesis of prostacyclin.

A: prostacyclin
****
Q: Adipose tissue as a source of nicotinamide N-methyltransferase and homocysteine.

A:
nicotinamide
****