Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25819459
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Exp+Eye+Res
2015 ; 133
(ä): 112-25
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Extracellular matrix in the trabecular meshwork: intraocular pressure regulation
and dysregulation in glaucoma
#MMPMID25819459
Vranka JA
; Kelley MJ
; Acott TS
; Keller KE
Exp Eye Res
2015[Apr]; 133
(ä): 112-25
PMID25819459
show ga
The trabecular meshwork (TM) is located in the anterior segment of the eye and is
responsible for regulating the outflow of aqueous humor. Increased resistance to
aqueous outflow causes intraocular pressure to increase, which is the primary
risk factor for glaucoma. TM cells reside on a series of fenestrated beams and
sheets through which the aqueous humor flows to exit the anterior chamber via
Schlemm's canal. The outer trabecular cells are phagocytic and are thought to
function as a pre-filter. However, most of the outflow resistance is thought to
be from the extracellular matrix (ECM) of the juxtacanalicular region, the
deepest portion of the TM, and from the inner wall basement membrane of Schlemm's
canal. It is becoming increasingly evident that the extracellular milieu is
important in maintaining the integrity of the TM. In glaucoma, not only have
ultrastructural changes been observed in the ECM of the TM, and a significant
number of mutations in ECM genes been noted, but the stiffness of glaucomatous TM
appears to be greater than that of normal tissue. Additionally, TGF?2 has been
found to be elevated in the aqueous humor of glaucoma patients and is assumed to
be involved in ECM changes deep with the juxtacanalicular region of the TM. This
review summarizes the current literature on trabecular ECM as well as the
development and function of the TM. Animal models and organ culture models
targeting specific ECM molecules to investigate the mechanisms of glaucoma are
described. Finally, the growing number of mutations that have been identified in
ECM genes and genes that modulate ECM in humans with glaucoma are documented.