Extracellular matrix turnover and outflow resistance.

Extracellular matrix turnover and outflow resistance.
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DOI:
10.1016/j.exer.2008.11.023
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发表时间:
2009-04
影响因子:
3.4
通讯作者:
Acott, Ted S.
Acott, Ted S.
中科院分区:
医学3区
文献类型:
--
作者:
Keller, Kate E.;Aga, Mini;Bradley, John M.;Kelley, Mary J.;Acott, Ted S.

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升高的眼内压(IOP)的正常稳态调节涉及小梁网(TM)的细胞外基质(ECM)的重塑。这需要感测升高的IOP,释放许多活化的蛋白酶以降解现有的ECM,并同时生物合成替代ECM组分。为了增加或降低IOP,新组件的数量、物理性质和/或组织应与更换的组件略有不同,以改变流出阻力。流出途径中的ECM降解和替代生物合成必须严格控制并集中于保持组织的复杂结构组织。最近发现的足状体或侵入足样结构(PILS)可能有助于ECM的局部降解和替换组件的组织化。
Normal homeostatic adjustment of elevated intraocular pressure (IOP) involves remodeling the extracellular matrix (ECM) of the trabecular meshwork (TM). This entails sensing elevated IOP, releasing numerous activated proteinases to degrade existing ECM and concurrent biosynthesis of replacement ECM components. To increase or decrease IOP, the quantity, physical properties and/or organization of new components should be somewhat different from those replaced in order to modify outflow resistance. ECM degradation and replacement biosynthesis in the outflow pathway must be tightly controlled and focused to retain the complex structural organization of the tissue. Recently identified podosome- or invadopodia-like structures (PILS) may aid in the focal degradation of ECM and organization of replacement components.
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