Systemic pharmacokinetics of intravitreal anti-VEGF medications in wet AMD treatment

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Marta Misiuk-Hojło
Karolina Czajor

Abstract

Modern therapy of wet forms of AMD is based on administration of medications in the form of intravitreal injections: bevacizumab, ranibizumab and aflibercept. The population of people exposed to a long-term effect of anti-VEGF preparations is continuously increasing. Due to the penetration of the preparations administered intravitreously into the blood circulation, the knowledge of the activity of the available preparations is particularly important in deciding about the commissioned treatment. They differ in molecular structure, binding affinity of VEGF and pharmacokinetics. Ranibizumab is characterized by a fast clearance from circulation and a short-term systemic exposure. A slower bevacizumab and aflibercept circulation clearance is related to the presence of the Fc fragment in the molecular structure. Further research on the effects of the reduction of VEGF concentration in serum is essential in the course of a long- -term anti-VEGF intravitreal preparation therapy, which may affect decisions about the administered medication and the dosing regimen.

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1.
Misiuk-Hojło M, Czajor K. Systemic pharmacokinetics of intravitreal anti-VEGF medications in wet AMD treatment. Ophthatherapy [Internet]. 2016Mar.31 [cited 2024Dec.25];3(1):4-10. Available from: https://journalsmededu.pl/index.php/ophthatherapy/article/view/587
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