scholarly journals Autoantigens in the trabecular meshwork and glaucoma‐specific alterations in the natural autoantibody repertoire

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Vanessa M Beutgen ◽  
Carsten Schmelter ◽  
Norbert Pfeiffer ◽  
Franz H Grus
Keyword(s):  
Trabecular Meshwork ◽  
Natural Autoantibody

Mechanical stretch upregulates connexin43 in human trabecular meshwork cells

2019 ◽  
Author(s):  
Nikoleta Tellios ◽  
Mary Feng ◽  
Nancy Chen ◽  
Hong Liu ◽  
Vasiliki Tellios ◽  
...  
Keyword(s):  
Trabecular Meshwork ◽  
Mechanical Stretch ◽  
Trabecular Meshwork Cells

Circumferential trabecular meshwork cell density in the human eye

2021 ◽  
Vol 205 ◽  
pp. 108494
Author(s):  
Markus H. Kuehn ◽  
Janice A. Vranka ◽  
David Wadkins ◽  
Thomas Jackson ◽  
Lin Cheng ◽  
...  
Keyword(s):  
Cell Density ◽  
Trabecular Meshwork ◽  
Human Eye ◽  
Trabecular Meshwork Cell

scholarly journals mTOR inhibitors potentially reduce TGF-β2-induced fibrogenic changes in trabecular meshwork cells

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nozomi Igarashi ◽  
Megumi Honjo ◽  
Makoto Aihara
Keyword(s):  
Trabecular Meshwork ◽  
Transforming Growth Factor ◽  
Smooth Muscle Actin ◽  
Mtor Inhibitors ◽  
In Vivo Model ◽  
Type I ◽  
Fibrotic Response ◽  
Alpha Smooth Muscle Actin

AbstractWe examined the effects of mTOR inhibitors on the fibrotic response induced by transforming growth factor-beta2 (TGF-β2) in cultured human trabecular meshwork (hTM) cells. TGF-β2-induced expression of fibronectin, collagen type I, alpha 1 chain (COL1A1), and alpha-smooth muscle actin (αSMA) in hTM cells was examined in the presence or absence of mTOR inhibitors using quantitative real-time polymerase chain reaction, Western blotting, and immunohistochemistry. The migration rates of hTM cells were examined in the presence of TGF-β2 with or without mTOR inhibitors. An in vitro study showed that the expression of fibronectin, COL1A1, and αSMA was upregulated by TGF-β2 treatment of hTM cells; such upregulation was significantly suppressed by mTOR inhibitors. The inhibitors significantly reduced the migration rate of TGF-β2-stimulated hTM cells. mTOR inhibitors may usefully reduce the fibrotic response of hTM cells and we may have to explore if it is also effective in in vivo model.

Effect of dexamethasone on the expression of MMPs, adenosine A1 receptors and NFKB by human trabecular meshwork cells

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Normie Aida Mohd Nasir ◽  
Renu Agarwal ◽  
Anna Krasilnikova ◽  
Siti Hamimah Sheikh Abdul Kadir ◽  
Igor Iezhitsa
Keyword(s):  
Extracellular Matrix ◽  
Western Blot ◽  
Trabecular Meshwork ◽  
Culture Media ◽  
Smooth Muscle Actin ◽  
Adenosine A1 Receptors ◽  
Trabecular Meshwork Cells ◽  
Aqueous Humor Dynamics ◽  
Nfkb Activation ◽  
Adenosine A1

AbstractObjectivesSteroid-induced ocular hypertension and glaucoma are associated with extracellular matrix remodeling at the trabecular meshwork (TM) of the eye due to reduced secretion of matrix metalloproteinases (MMPs), a family of enzymes regulating extracellular matrix proteolysis. Several biological functions of steroids are known to involve regulation of adenosine A1 receptors (A1AR) and nuclear factor kappa B (NFKB). Since MMPs expression in TM has been shown to be regulated by A1AR as well as transcription factors, it is likely that dexamethasone-induced changes in aqueous humor dynamics involve reduced MMP and A1AR expression and reduced NFKB activation. Hence, the current study investigated the association of dexamethasone-induced reduction in MMP secretion with reduced NFKB activation and A1AR expression.MethodsHuman trabecular meshwork cells (HTMCs) were characterized by estimating myocilin and alpha smooth muscle actin expression and then were treated with dexamethasone 100 nM for 2, 5 and 7 days. The MMP secretion was estimated in culture media using Western blot. Immunocytochemistry (ICC) and ELISA were done to investigate the effect of dexamethasone on NFKB phosphorylation. A1AR expression in HTMCs was determined using Western blot and ELISA.ResultsDexamethasone caused a significant reduction in both MMP-2 and -9 expression compared to untreated group after five and seven days but not after two days of culture. Significantly reduced phosphorylated NFKB and A1AR protein levels were detected in dexamethasone treated compared to vehicle treated HTMCs after five days of culture.ConclusionsDexamethasone reduces MMP-2 and -9 secretion by HTMCs and this effect of dexamethasone is associated with reduced NFKB phosphorylation and A1AR expression.

scholarly journals Erythrocyte phagocytosis in the human trabecular meshwork.

1973 ◽  
Vol 57 (6) ◽  
pp. 400-415 ◽  
Author(s):  
I Grierson ◽  
W R Lee
Keyword(s):  
Trabecular Meshwork

scholarly journals In Situ Autofluorescence Visualization of Human Trabecular Meshwork Structure

2012 ◽  
Vol 53 (4) ◽  
pp. 2080 ◽  
Author(s):  
James C. H. Tan ◽  
Jose M. Gonzalez ◽  
Sarah Hamm-Alvarez ◽  
Jonathan Song
Keyword(s):  
Trabecular Meshwork

Trabecular meshwork depigmentation in Vogt–Koyanagi–Harada disease

2013 ◽  
Vol 57 (3) ◽  
pp. 245-251 ◽  
Author(s):  
Kazuomi Mizuuchi ◽  
Nobuyoshi Kitaichi ◽  
Kenichi Namba ◽  
Yukihiro Horie ◽  
Susumu Ishida ◽  
...  
Keyword(s):  
Trabecular Meshwork
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