What question did this study set out to answer?

The study aims to investigate the role of OCT2 and MATE1 in the uptake of brimonidine in the human eye.

April 4, 2026Open Access

Identification of Brimonidine as a Novel Substrate of Organic Cation Transporters OCT2 and MATE1 Expressed in Human Eye

CKCharlotte KölzDr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology CNClaudia NeulDr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology UHUte HofmannDr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology

Key Points

The study aims to investigate the role of OCT2 and MATE1 in the uptake of brimonidine in the human eye.
Identifying the role of OCT2 and MATE1 transporters in drug uptake.
Assessing brimonidine concentrations in human ocular tissues.
Analyzing interindividual variability in response to brimonidine.
Confirmed OCT2 and MATE1 as key transporters for brimonidine uptake.
Observed variability in brimonidine concentrations among individuals.
Indicated potential implications for the effectiveness of brimonidine treatment.

Abstract

These results imply that OCT2 and MATE1 may play a role in brimonidine uptake into the human eye and may contribute to the interindividual variability of brimonidine concentrations and effects.

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