August 24, 2001 Journal article Closed Access

J. Michael Walker; Sai Y. Chang; Andrew Coop; Ramachandran Sivakumar; Robert E. Zipkin; Sumner Burstein; Susan M. Huang; Luciano De Petrocellis; Dean Y. Maeda; Paul A. Zavitsanos; Tiziana Bisogno; Timothy J. Petros; Vincenzo Di Marzo

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    <subfield code="a">In mammals, specific lipids and amino acids serve as crucial signaling molecules. In bacteria, conjugates of lipids and amino acids (referred to as lipoamino acids) have been identified and found to possess biological activity. Here, we report that mammals also produce lipoamino acids, specifically the arachidonyl amino acids. We show that the conjugate of arachidonic acid and glycine (N-arachidonylglycine (NAGly)) is present in bovine and rat brain as well as other tissues and that it suppresses tonic inflammatory pain. The biosynthesis of NAGly and its degradation by the enzyme fatty acid amide hydrolase can be observed in rat brain tissue. In addition to NAGly, bovine brain produces at least two other arachidonyl amino acids: N-arachidonyl gamma-aminobutyric acid (NAGABA) and N-arachidonylalanine. Like NAGly, NAGABA inhibits pain. These findings open the door to the identification of other members of this new class of biomolecules, which may be integral to pain regulation and a variety of functions in mammals.</subfield>
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    <subfield code="a">Identification of a New Class of Molecules, the Arachidonyl Amino Acids, and Characterization of One Member That Inhibits Pain</subfield>
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