Microarchitecture of Vitreoretinal Contact

NCT ID: NCT04802889

Last Updated: 2021-03-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-01-01

Study Completion Date

2020-12-31

Brief Summary

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Investigation of the vitreoretinal contact microarchitecture in the macular and paramacular zones of the human retina.

Detailed Description

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Purpose: to study the features of the macular ILM, to study the features of the preretinal structures of the vitreous body of the Central retinal region, morphofunctional features of preretinal hyalocytes, and the mechanism of vitreoretinal adhesion.

Study Protocol: examination of donor human eyes obtained from an eye Bank after sampling material for corneal transplantation.

Research method: scanning electron microscopy (SEM) of the central retina (macular and paramacular zone): ILM, preretinal vitreous.

Scientific hypothesis: vitreoretinal adhesion is provided not by laminin and fibronectin, but by the interweaving of vitreous collagen fibers between the epiretinal vitreous (more firmly fixed to the retinal surface) and the cortical vitreous.

Expected results: determination of ILM thickness in the macular zone, microanatomy of preretinal vitreous strutcures, and possible mechanism of vitreoretinal adhesion, establishing the possibility of intravital synthesis of collagen fibers synthesis in the adult vitreous.

Conditions

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Vitreoretinal Detachment Vitreo-Retinal Adhesion

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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cadaver eyes

The Central region of the retina and preretinal structures of cadaver eyes are examined

Group Type EXPERIMENTAL

scanning electron microscopy

Intervention Type OTHER

scanning electron microscopy of the сentral retina and preretinal structures

Interventions

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scanning electron microscopy

scanning electron microscopy of the сentral retina and preretinal structures

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* eyes from donors without concomitant multiple organ pathology and ophthalmic pathology

Exclusion Criteria

* eye injury, age over 45 years, concomitant multiple organ pathology, previous eye diseases
Minimum Eligible Age

35 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The S.N. Fyodorov Eye Microsurgery State Institution

OTHER_GOV

Sponsor Role lead

Responsible Party

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Lyskin Pavel Vladimirovich, MD, PhD

MD, PhD, ophthalmosurgeon

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Pavel V Lyskin, PhD

Role: PRINCIPAL_INVESTIGATOR

The S.N. Fyodorov Eye Microsurgery State Institution

Locations

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S.N. Fedorov Nmrc "Mntk "Eye Microsurgery"

Moscow, , Russia

Site Status

Countries

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Russia

Related Links

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https://kazanmedjournal.ru/kazanmedj/article/viewFile/15523/12127

Microanatomy of vitreoretinal interactions in macular and paramacular areas (article DOI: 10.17816/KMJ2019-595)

https://doi.org/10.25276/0235-4160-2019-1-39-43

Microanatomy of Internal Limiting Membrane (article)

https://doi.org/10.25276/2307-6658-2019-2-52-56

Cellular Microanatomy of Vitreoretinal Interface. Morphofunctional Identification of Epiretinal Vitreous Cells. Collagen Synthesis in Adult Human Vitreous (article)

https://doi.org/10.25276/2307-6658-2019-2-57-62

New Data of Mechanism in Vitreoretinal Adhesion and Posterior Vitreous Detachment in Humans (article)

https://doi.org/10.25276/2307-6658-2018-4-27-32

Antithesis to the thesis about fibronectin and laminin as the main components providing vitreoretinal adhesion (article)

Other Identifiers

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124576

Identifier Type: -

Identifier Source: org_study_id

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