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Published on: August 6, 2021
Red Blood Cells: A Newly Described Partner in Central Retinal Vein Occlusion Pathophysiology?
Sandrine Laurance1, Mickaël Marin1, Yves Colin1
1Université Paris Cité and Université des Antilles, INSERM, BIGR, F-75014 Paris, France.
Insights
Central retinal vein occlusion (CRVO) involves red blood cell (RBC) dysfunction. Understanding RBC roles beyond oxygen transport may reveal new CRVO treatment targets.
Area of Science:
- Ophthalmology
- Hematology
- Vascular Biology
Background:
- Central retinal vein occlusion (CRVO) is a common cause of vision loss.
- Current treatments for CRVO address complications, not the underlying causes.
- The exact pathophysiology of CRVO remains unclear, with no identified primary cause.
Purpose of the Study:
- To review the pathophysiology of CRVO.
- To explore the specific role of the erythroid lineage, particularly red blood cells (RBCs), in CRVO.
- To highlight emerging data on non-oxygen transport functions of RBCs and their vascular impact.
Main Methods:
- Literature review of studies on CRVO pathophysiology.
- Analysis of research on red blood cell (RBC) functions and dysfunction.
- Synthesis of evidence linking RBCs to vascular obstruction in the retina.
Main Results:
- CRVO is a multifactorial disorder with complex underlying mechanisms.
- Red blood cells (RBCs) possess functions beyond oxygen transport that can affect vascular health.
- Emerging evidence suggests a significant involvement of RBC dysfunction in the occurrence of CRVO.
Conclusions:
- The erythroid lineage, specifically red blood cells (RBCs), plays a crucial role in CRVO pathophysiology.
- Further research into RBC functions may uncover novel therapeutic targets for CRVO.
- Understanding RBCs' non-canonical roles is essential for developing effective CRVO treatments.
Abstract:
Central retinal vein occlusion (CRVO) is a frequent retinal disorder inducing blindness due to the occlusion of the central vein of the retina. The primary cause of the occlusion remains to be identified leading to the lack of treatment. To date, current treatments mainly target the complications of the disease and do not target the primary dysfunctions. CRVO pathophysiology seems to be a multifactorial disorder; several studies did attempt to decipher the cellular and molecular mechanisms underlying the vessel obstruction, but no consensual mechanism has been found. The aim of the current review is to give an overview of CRVO pathophysiology and more precisely the role of the erythroid lineage. The review presents emerging data on red blood cell (RBC) functions besides their role as an oxygen transporter and how disturbance of RBC function could impact the whole vascular system. We also aim to gather new evidence of RBC involvement in CRVO occurrence.
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