The Use of Natural Latex Biomembrane in Ocular Surface Reconstruction
2010年11月29日 更新者：University of Sao Paulo
The Use of Natural Latex Biomembrane in Ocular Surface Reconstruction and Pterygium
The main problem of ocular surface reconstruction is the lack of viable conjunctival tissue.
The use of a biocompatible latex biomembrane in ocular surface healing, like post pterygium surgery, could be an alternative therapeutic resource to this process.
研究概览
详细说明
The latex biomembrane is considered biocompatible and believed to promote neoformation of biological tissues.
It also induces vascular neoformation and promotes extra cellular provisional matrix formation, fundamental steps for any kind of wound healing.
In humans, it was successfully used in chronic cutaneous ulcer and otologic surgeries.
In rabbits' eyes, the latex biomembrane was efficient in ocular surface reconstruction with adequate conjunctiva functional recovery, compared to bare sclera.
To study the latex biomembrane action in human ocular surface, it was compared to conjunctival autograft in humans eyes.
Considering the deficiency of adequate sized groups and the pterygium recurrences criteria differences, this study proposes the fibrovascular tissue growing measure like an auxiliary method of pos-operative evaluation.
The biomembrane of natural latex seems to be efficient in ocular surface reconstruction and must be employed in future studies of other ocular pathologies.
This material revealed to be a new source of therapeutic resort to external eye diseases and conjunctival replace in surgeries living bare sclera.
研究类型
介入性
注册 (实际的)
127
阶段
- 阶段2
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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SP
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Ribeirão Preto、SP、巴西
- Erika Christina Canarim Martha de Pinho
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 至 90年 (成人、年长者)
接受健康志愿者
不
有资格学习的性别
全部
描述
Inclusion Criteria:
- symptomatic pterygium
Exclusion Criteria:
- any other ocular surface pathology, glaucoma, retinal disease, pregnancy, auto immune disease, severe systemic disease
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：conjunctival autograft
The conjunctival autograft was performed after the pterygium surgery like usual technique.
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pterygium was removed surgically
其他名称：
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实验性的：latex biomembrane application
The latex biomembrane was applied after pterygium surgery to recover the bare sclera area.
This device was closed to conjunctiva with running suture anchored at some places to episclera.
The sutures was removed at fourteenth day after surgery.
|
pterygium was removed surgically
其他名称：
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
change in fibrovascular tissue growing measure
大体时间：twelve months
|
The fibrovascular tissue growing measure was designed to be an auxiliary method of pos-operative evaluation.
At the slit lamp, the pterygium or the fibrovascular growing tissue was measured related to anatomic limbus.
To the scleral side was given negative value and to the cornea side was given positive value.
The anatomic limbus was the zero in this scale.
The results were compared at inicial stage and three, six and twelve months, to evaluate the progression and recurrence probability.
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twelve months
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
pterygium recurrence
大体时间：twelve months
|
Pterygium recurrence was defined like fibrovascular tissue growing up to 1,5mm across the anatomic limbus.
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twelve months
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 学习椅：Sidney JF Sousa, phD、Ribeirão Preto Faculty of Medicine
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
一般刊物
- Geggel HS, Friend J, Thoft RA. Conjunctival epithelial wound healing. Invest Ophthalmol Vis Sci. 1984 Jul;25(7):860-3.
- PINHO, E.C.C.M. Uso de uma membrana derivada de látex natural na superfície ocular. Estudo experimental em coelhos. Dissertação. (Mestrado em Oftalmolgia). Ribeirão Preto, Universidade de São Paulo, 2003. p 96.
- PINHO, E.C.C.M.; FARIA E SOUSA, S.J.; CHAHUD, F.; LACHAT, J-J.; COUTINHO - NETTO, J. Uso experimental da biomembrana de látex na reconstrução conjuntival. Arquivos Brasileiros de Oftalmologia, v. 67, p. 27- 32, 2004.
- PINHO, E.C.C.M.; SEIXAS, G.C.O.; SOUZA-JUNIOR, E.N.; FARIA E SOUSA, S.J.; LACHAT, J-J.; COUTINHO - NETTO, J. The use of natural latex in human eye: technique description. In: Congresso Mundial de Oftalmologia, 2006a, São Paulo. Anais eletrônicos, código 2717.
- PINHO, E.C.C.M; FARIA E SOUSA, S.J.; SOUZA-JUNIOR, E.N.; SEIXAS, G.C.O.; LACHAT, J-J.; COUTINHO - NETTO, J. The use of natural latex in ocular surface, like tissue repair promoter, in pterygium excision. In: Congresso Mundial de Oftalmologia, 2006b, São Paulo. Anais eletrônicos, código 2150.
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2006年6月1日
初级完成 (实际的)
2007年6月1日
研究完成 (实际的)
2009年7月1日
研究注册日期
首次提交
2010年11月24日
首先提交符合 QC 标准的
2010年11月29日
首次发布 (估计)
2010年11月30日
研究记录更新
最后更新发布 (估计)
2010年11月30日
上次提交的符合 QC 标准的更新
2010年11月29日
最后验证
2009年12月1日
更多信息
与本研究相关的术语
其他研究编号
- 12416/05
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.
pterygium surgery的临床试验
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St. Joseph's Healthcare HamiltonHamilton Academic Health Sciences Organization完全的
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Seoul National University HospitalJohnson & Johnson Medical Companies完全的