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Safety and Efficacy of Pluripotent Stem Cell-derived Mesenchymal Stem Cell Exosome (PSC-MSC-Exo) Eye Drops Treatment for Dry Eye Diseases Post Refractive Surgery and Associated With Blepharospasm

Dry Eye Disease Clinical Trial

Official title:
A Clinical Study of the Safety and Efficacy of Pluripotent Stem Cell-derived Mesenchymal Stem Cell Exosome (PSC-MSC-Exo) Eye Drops Treatment for Dry Eye Diseases Post Refractive Surgery and Associated With Blepharospasm

Clinical Trial Summary

The purpose of this study is to evaluate the preliminary safety and effectiveness of Pluripotent Stem Cell-derived Mesenchymal Stem Cell Exosome (PSC-MSC-Exo) Eye Drops in the treatment of dry eye diseases post refractive surgery and associated with blepharospasm

Clinical Trial Description

Dry eye disease (DED) is a multifactorial disease of the ocular surface characterized by instability of the tear film and the prevalence has been estimated to reach 20%-40%. Especially, dry eye symptoms are common complaints of patients with blepharospasm or refractive surgery history, seriously affecting their quality of life. There are many conventional therapies for DED which include ocular lubricants, oral essential fatty acid supplementation, lid hygiene and warm compresses, punctal occlusion, various treatments to obstructed meibomian glands, topical antibiotics, topical corticosteroids, topical secretagogues, topical non-glucocorticoid immunomodulatory drugs and scleral contact lenses. However, the overall efficacy is still unsatisfactory with apparent side effects, long periods of treatment, and high-costs. Mesenchymal stem cell-derived exosomes (MSC-Exo) are 30-150nm microvesicles secreted by mesenchymal stem cells (MSCs), which can mediate the therapeutic efficacy of mesenchymal stem cells by the encapsulated proteins, miRNAs and other bioactive substances, and showed potential in the treatment of various diseases. This study aims to evaluate the preliminary safety and effectiveness of PSC-MSC-Exo in the treatment of dry eye diseases post refractive surgery and associated with blepharospasm. This is an open-label, single-arm, before-after study with 12 subjects with dry eye diseases and the history of refractive surgery or blepharospasm. There are 5 visits over the course of 12 weeks. Visit 1: Week-1 Visit 2: Week-2 Visit 3: Week-4 Visit 4: Week-8 Visit 5: Week-12 ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05738629
Study type Interventional
Source Second Affiliated Hospital, School of Medicine, Zhejiang University
Contact Qi Gao, Doc.
Phone 86-15088774002
Email gaoqi8977@zju.edu.cn
Status Not yet recruiting
Phase Phase 1/Phase 2
Start date March 2023
Completion date February 2025
View Details
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