Dominance of cyclooxygenase-2 in the regulation of pancreatic islet prostaglandin synthesis

R. Paul Robertson

Research output: Contribution to journalReview articlepeer-review

97 Scopus citations

Abstract

Dramatic, scientifically important discoveries in prostaglandin (PG) pharmacology and physiology have taken place over the past decade. Chief among these discoveries is the identification of two separate forms of cyclooxygenase (COX), a constitutive and an inducible form, both of which exist in most tissues. The pancreatic islet is an exception to this rule because it continually and dominantly expresses the inducible form, COX-2. It has also been learned that nonsteroidal anti-inflammatory drugs affect the two forms of COX with different potencies, a finding with far-reaching clinical implications. An equally important finding is that PGE2, which is known to negatively modulate glucose-induced insulin secretion, has at least four different subtypes of receptors with different mechanisms of action and metabolic consequences. These recent changes in our understanding of the molecular regulation of PG synthesis call for a reconsideration of previous hypotheses involving PGE2 as a regulator of β-cell function in physiological and pathophysiological states.

Original languageEnglish (US)
Pages (from-to)1379-1383
Number of pages5
JournalDiabetes
Volume47
Issue number9
DOIs
StatePublished - 1998

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