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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 Front+Neurosci
2016 ; 10
(ä): 390
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gab.com Text
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English Wikipedia
Bidirectional Expression of Metabolic, Structural, and Immune Pathways in Early
Myopia and Hyperopia
#MMPMID27625591
Riddell N
; Giummarra L
; Hall NE
; Crewther SG
Front Neurosci
2016[]; 10
(ä): 390
PMID27625591
show ga
Myopia (short-sightedness) affects 1.45 billion people worldwide, many of whom
will develop sight-threatening secondary disorders. Myopic eyes are characterized
by excessive size while hyperopic (long-sighted) eyes are typically small. The
biological and genetic mechanisms underpinning the retina's local control of
these growth patterns remain unclear. In the present study, we used RNA
sequencing to examine gene expression in the retina/RPE/choroid across 3 days of
optically-induced myopia and hyperopia induction in chick. Data were analyzed for
differential expression of single genes, and Gene Set Enrichment Analysis (GSEA)
was used to identify gene sets correlated with ocular axial length and refraction
across lens groups. Like previous studies, we found few single genes that were
differentially-expressed in a sign-of-defocus dependent manner (only BMP2 at 1
day). Using GSEA, however, we are the first to show that more subtle shifts in
structural, metabolic, and immune pathway expression are correlated with the eye
size and refractive changes induced by lens defocus. Our findings link gene
expression with the morphological characteristics of refractive error, and
suggest that physiological stress arising from metabolic and inflammatory pathway
activation could increase the vulnerability of myopic eyes to secondary
pathologies.