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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Invest+Ophthalmol+Vis+Sci
2013 ; 54
(13
): 8119-24
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A perspective on the role of the extracellular matrix in progressive retinal
degenerative disorders
#MMPMID24346621
Al-Ubaidi MR
; Naash MI
; Conley SM
Invest Ophthalmol Vis Sci
2013[Dec]; 54
(13
): 8119-24
PMID24346621
show ga
Progressive inherited retinal degenerative disorders (PIRDDs) are the leading
cause of blindness in developed countries, with AMD and RP constituting the
majority of PIRDDs. Currently, over 8 million Americans have PIRDDs, and that
number is estimated to drastically increase by the end of this decade. Although a
mutant protein is expressed starting early during retinal development in patients
with PIRDDs, symptoms of retinal degeneration do not manifest until much later.
Historically, research has focused on understanding the role a mutation has in
the function of a protein and what role the mutant protein has in the disease
process. However, it remains unknown why the disease, irrespective of the
mutation, manifests clinically much later in life, while cellular indicators of
disease (e.g., accumulation of toxic protein products and cell death) occur
throughout early and middle life. Herein, we propose that there exists a time
point at which the degenerative process is accelerated, leading to the appearance
of clinical symptoms. This point is defined by structural disruptions of the
extracellular matrix (ECM). Death of a critical number of ECM-maintaining mutant
protein-expressing retinal cells contributes to that break point in the
degenerative process. Therefore, it is important to understand the changes
occurring at the ECM during PIRDDs and to take that into account when therapeutic
approaches are designed.