Literature DB >> 28570736

Preclinical PET Study of Intravitreal Injections.

Anxo Fernández-Ferreiro1, Andrea Luaces-Rodríguez2, Pablo Aguiar3, Juan Pardo-Montero4, Miguel González-Barcia5, Lara García-Varela6, Michel Herranz7, Jesús Silva-Rodríguez6, María Gil-Martínez8, María A Bermúdez9, Alba Vieites-Prado10, José Blanco-Méndez2, María Jesús Lamas5, Francisco Gómez-Ulla11, Álvaro Ruibal12, Francisco Javier Otero-Espinar2, Francisco González11.   

Abstract

Purpose: This work aimed at describing the time course of vitreous clearance through the use of positron emission tomography (PET) as a noninvasive tool for pharmacokinetic studies of intravitreal injection.
Methods: The pharmacokinetic profile of intravitreal injections of molecules labeled with 18Fluorine (18F) was evaluated in adult Sprague Dawley rats by using a dedicated small-animal PET/computed tomography scanner. Different conditions were studied: three molecules radiolabeled with 18F (18F-FDG, 18F-NaF, and 18F-Choline), three volumes of intravitreal injections (7, 4, and 2 μL), and absence or presence of eye inflammation (uveitis).
Results: Our results showed that there are significant pharmacokinetic differences among the radiolabeled molecules studied but not among the injected volumes. The presence or absence of uveitis was an important factor in vitreous clearance, since the elimination of the drug was clearly increased when this condition is present. Conclusions: Intravitreal pharmacokinetic studies based on the use of dedicated PET imaging can be of potential interest as noninvasive tools in ophthalmic drug development in small animals.

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Year:  2017        PMID: 28570736     DOI: 10.1167/iovs.17-21812

Source DB:  PubMed          Journal:  Invest Ophthalmol Vis Sci        ISSN: 0146-0404            Impact factor:   4.799


  3 in total

Review 1.  Imaging Techniques in the Diagnosis and Management of Ocular Tumors: Prospects and Challenges.

Authors:  Rabin Neupane; Ripal Gaudana; Sai H S Boddu
Journal:  AAPS J       Date:  2018-09-05       Impact factor: 4.009

Review 2.  Review of Intraocular Pharmacokinetics of Anti-Infectives Commonly Used in the Treatment of Infectious Endophthalmitis.

Authors:  Andrea Luaces-Rodríguez; Miguel González-Barcia; María José Blanco-Teijeiro; María Gil-Martínez; Francisco Gonzalez; Francisco Gómez-Ulla; María-Jesús Lamas; Francisco-Javier Otero-Espinar; Anxo Fernández-Ferreiro
Journal:  Pharmaceutics       Date:  2018-05-29       Impact factor: 6.321

3.  Monitoring New Long-Lasting Intravitreal Formulation for Glaucoma with Vitreous Images Using Optical Coherence Tomography.

Authors:  Maria Jesus Rodrigo; Amaya Pérez Del Palomar; Alberto Montolío; Silvia Mendez-Martinez; Manuel Subias; Maria Jose Cardiel; Teresa Martinez-Rincon; José Cegoñino; José Maria Fraile; Eugenio Vispe; José Antonio Mayoral; Vicente Polo; Elena Garcia-Martin
Journal:  Pharmaceutics       Date:  2021-02-05       Impact factor: 6.321

  3 in total

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