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Related Experiment Video

Updated: Oct 5, 2025

Morphometric Analyses of Retinal Sections

Morphometric Analyses of Retinal Sections

Published on: February 19, 2012

Caffeine Protects Against Retinal Inflammation.

Federica Conti¹, Francesca Lazzara¹, Giovanni Luca Romano^1,2

¹Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy.

Frontiers in Pharmacology

|January 24, 2022

Summary

Caffeine, a popular stimulant, shows protective effects against retinal inflammation. It reduces inflammatory markers and preserves retinal function and integrity in both cell models and animal studies.

Keywords:

BDNF caffeine inflammation retina retinal pigment epithelial cells

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Area of Science:

Ophthalmology
Neuroscience
Pharmacology

Background:

Caffeine is a widely consumed central nervous system stimulant.
It acts as an antagonist for A1 and A2A adenosine receptors.
Retinal inflammation is a significant factor in various eye diseases.

Purpose of the Study:

To investigate the potential protective effects of caffeine in retinal tissue.
To evaluate caffeine's efficacy in both in vitro and in vivo models of retinal inflammation.

Main Methods:

In vitro: Human retinal pigment epithelial cells (ARPE-19) treated with lipopolysaccharide (LPS) and caffeine.
In vivo: Ischemia reperfusion (I/R) injury model in C57BL/6J mice with topical caffeine treatment.
Assays included measuring inflammatory cytokines (IL-1β, IL-6, TNF-α), p-NFκB translocation, transepithelial electrical resistance (TEER), sodium fluorescein permeability, pattern electroretinogram (PERG), and BDNF levels.

Main Results:

Caffeine attenuated inflammatory responses in ARPE-19 cells by reducing cytokine release and p-NFκB nuclear translocation.
Caffeine treatment restored the integrity of the ARPE-19 cell monolayer.
In the I/R mouse model, caffeine maintained physiological levels of Brain-Derived Neurotrophic Factor (BDNF) and reduced IL-6 mRNA levels.
Caffeine treatment preserved retinal ganglion cell (RGC) function as assessed by PERG.

Conclusions:

Caffeine demonstrates significant anti-inflammatory properties in retinal tissue.
These findings suggest caffeine's potential as a therapeutic agent for managing retinal inflammation and associated diseases.
Further research into caffeine's role in ocular health is warranted.