HPLC ELSD Method for Analysis of Arachidonoyl ethanolamideand Arachidonic acid on Lipak Column

Arachidonoyl ethanolamide (AEA) and arachidonic acid (AA) are closely related bioactive lipids that play significant roles in various physiological and biochemical processes.

Arachidonic acid, a polyunsaturated omega-6 fatty acid, is a critical precursor for the biosynthesis of prostaglandins, thromboxanes, and leukotrienes. In cells, nearly all arachidonic acid is stored as an esterified component of membrane phospholipids, with its levels tightly regulated through interconnected metabolic pathways. Upon stimulation, free arachidonic acid is transiently released, serving as a vital substrate for the production of eicosanoid signaling molecules. Processes such as receptor-mediated release, metabolic transformation, and reuptake of free arachidonate are essential for cell signaling and inflammatory responses.

Precursor Relationship : AEA is synthesized from arachidonic acid via enzymatic pathways. AA is first converted to N-arachidonoyl phosphatidylethanolamine (NAPE), then cleaved to form AEA. Biological Cross-Talk :

Arachidonic acid (AA) , Arachidonoyl ethanolamide (AEA) , Arachidonic acid can be retained, and analyzed using a Lipak mixed-mode stationary phase column. The analysis utilizes an gradient method with a mobile phase consisting of water, methanol (MeOH), ammonium formate and formic acid as a buffer. Detection is achieved using ELSD