Zebrafish Corneal Wound Healing: From Abrasion to Wound Closure Imaging Analysis

Kaisa Ikkala; Sini Raatikainen; Frederic Michon

doi:10.3791/63605

Zebrafish Corneal Wound Healing: From Abrasion to Wound Closure Imaging Analysis

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Biology

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Zebrafish Corneal Wound Healing: From Abrasion to Wound Closure Imaging Analysis

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08:19 min

March 1, 2022

DOI: 10.3791/63605-v

Kaisa Ikkala¹, Sini Raatikainen¹, Frederic Michon^1,2

¹Institute of Biotechnology, HiLIFE,University of Helsinki, ²Institute for Neurosciences of Montpellier,Univ Montpellier

Overview

This study investigates corneal wound healing by inducing ocular surface abrasion in zebrafish, a model organism that closely resembles human eye structure. The protocol describes the techniques used to create the abrasion and analyze cellular changes through scanning electron microscopy, revealing insights into cell shape modifications during the healing process.

Key Study Components

Research Area

Corneal biology
Wound healing mechanisms
Zebrafish as a model for ocular studies

Background

Importance of corneal transparency for vision
Zebrafish provide an accessible model for studying corneal pathogenesis
The need for effective techniques to assess wound healing

Methods Used

Corneal abrasion technique using an ocular burr
Zebrafish as the biological organism
Scanning electron microscopy for cellular morphology analysis

Main Results

Wound closure observed within three hours
Changes in cell shape and microridge structures near the wound site
Differences in microridge length in relation to cell position relative to the wound

Conclusions

Demonstrated how zebrafish can provide insights into corneal wound healing processes
Highlights the utility of this model for future pharmacological and biological research

Frequently Asked Questions

What is the significance of using zebrafish in this study?

Zebrafish are a well-established model for studying vertebrate development and disease, particularly for mechanisms relevant to human ocular conditions.

What methods were used to observe the wound healing?

The study used scanning electron microscopy to analyze changes in cell morphology following corneal abrasion.

How quickly does the wound close in zebrafish?

The wound closure was observed to occur within three hours post-abrasion.

What key cellular changes were observed during wound healing?

Changes in cell shape and microridge structure, with findings indicating a relationship between cell rearrangement and wound response.

What protocols are recommended for inducing corneal abrasion?

The protocol involves the use of an ocular burr to create the abrasion and requires specific preparation steps for anesthetizing the fish and cleaning the tools.

Can this model be used for pharmacological studies?

Yes, the zebrafish model is suitable for pharmacological studies to explore the effects of various chemicals on wound healing.

What broader implications does this research have?

This research enhances understanding of corneal biology and could inform therapeutic strategies for ocular diseases in humans.

This protocol focuses on damaging the ocular surface of zebrafish through abrasion to assess the subsequent wound closure at the cellular level. This approach exploits an ocular burr to partly remove the corneal epithelium and uses scanning electron microscopy to track changes in cell morphology during wound closure.

Corneal transparency is instrumental to clear sight. In pathological context, this transparency can be challenge. Studying pathogenesis mechanism requires simple models having a high similarity to human organ.

In these aspects, zebrafish is an excellent model. And this is the first detailed description of corneal abrasion in zebrafish. This technique is a simple and fast way to induce surface entry to the eye.

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