Shibanoki S, Weinberger SB, Ishikawa K, Martinez JL. Sensitive method for measuring hydrolysis of enkephalins in plasma, using high-performance liquid chromatography with electrochemical detection.
JOURNAL OF CHROMATOGRAPHY 1990;
532:249-59. [PMID:
2084123 DOI:
10.1016/s0378-4347(00)83776-7]
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Abstract
This paper describes a simple and sensitive method for detection of [Leu]- and [Met]enkephalin and their N-terminal tyrosine-containing metabolic fragments (Tyr, Tyr-Gly, Tyr-Gly-Gly, and Tyr-Gly-Gly-Phe), using high-performance liquid chromatography with electrochemical detection. The method employs a carbon graphite working electrode with increased working electrode surface area (40 mm2). The procedures were applied to assay of the activities of enkephalin-degrading enzymes in whole plasma collected from rats, mice, and chicks.
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