The TIGR/MYOC gene and glaucoma: opportunities for new understandings.
Tamm E R, Polansky J R
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19 articles in GJC
Tamm E R, Polansky J R
Lindsey J D, Gaton D D, Sagara T, Polansky J R, Kaufman P L, Weinreb R N
Topical prostaglandin treatment in monkeys reduced TIGR/myocilin protein in the ciliary muscle, suggesting a potential mechanism for prostaglandin-induced uveoscleral outflow increase relevant to glaucoma therapy.
Polansky J R, Fauss D J, Zimmerman C C
This study found that protective factors like bFGF can reduce glucocorticoid-induced TIGR/MYOC expression in human trabecular meshwork cells, while TIGR mutations disrupt protein processing, potentially contributing to glaucoma pathogenesis.
Polansky J R, Nguyen T D
Recent genetic advances, especially the TIGR gene's role in glaucoma, reveal pathogenic mechanisms. This improves diagnosis, understanding disease causes, and developing better treatments for various glaucoma types.
Lütjen-Drecoll E, May C A, Polansky J R, Johnson D H, Bloemendal H, Nguyen T D
This study found stress proteins alpha B-crystallin and TIGR were more widespread and intense in glaucomatous trabecular meshwork. This suggests their involvement in glaucoma's disease process and potential as biomarkers.
Lerner L E, Polansky J R, Howes E L, Stern R
This study found significant hyaluronan in healthy trabecular meshwork endothelial cells, suggesting its crucial role in regulating aqueous outflow resistance and offering a baseline for glaucoma research.
Stone E M, Fingert J H, Alward W L, Nguyen T D, Polansky J R, Sunden S L et al.
Researchers identified a gene (TIGR) on chromosome 1q causing primary open-angle glaucoma. Mutations in TIGR were found in 3.9% of patients, aiding early diagnosis and treatment.
Shirato S, Murphy C G, Bloom E, Franse-Carman L, Maglio M T, Polansky J R et al.
This study characterized phagocytosis in human trabecular meshwork cells, finding a sigmoid-like uptake curve, significant cell changes, and maximum phagocytosis around 96 hours, which is relevant for understanding outflow resistance in glaucoma.
Yun A J, Murphy C G, Polansky J R, Newsome D A, Alvarado J A
HTM cells secrete most ECM proteins, but dexamethasone uniquely induced elastin production. This suggests a mechanism for steroid-induced glaucoma.
Perkins T W, Alvarado J A, Polansky J R, Stilwell L, Maglio M, Juster R
HTM cell monolayers on filters showed hydraulic conductivity mimicking outflow. Cytochalasin B dramatically increased conductivity by cell retraction, offering a model to study aqueous outflow regulation.
Weinreb R N, Polansky J R, Alvarado J A, Mitchell M D
HTM cells metabolize arachidonic acid into diverse eicosanoids (PGE2, PGF2α, HETEs, LTB4), suggesting complex roles in aqueous outflow regulation and potential therapeutic targets.
Shuman M A, Polansky J R, Merkel C, Alvarado J A
Human trabecular meshwork cells produce abundant t-PA, a clot-dissolving enzyme, with minimal inhibitor. This suggests fibrinolysis is crucial for maintaining outflow and preventing glaucoma.
Weinreb R N, Ryder M I, Polansky J R
Studying monkey trabecular cells, researchers found actin filaments are crucial for cell shape and organization, suggesting their importance in outflow regulation relevant to glaucoma.
Weinreb R N, Polansky J R, Kramer S G, Baxter J D
Oral dexamethasone acutely raised IOP in glaucoma patients, especially 4-8 hours post-dose. This suggests glucocorticoids play a significant, rapid role in IOP regulation.
Polansky J R, Wood I S, Maglio M T, Alvarado J A
Cultured human trabecular cells maintain key structural/functional properties, including phagocytosis and ECM production, crucial for understanding outflow pathway health and glaucoma pathology.
Weinreb R N, Mitchell M D, Polansky J R
Human trabecular cells produce prostaglandins, which dexamethasone significantly inhibits. This finding suggests a mechanism for steroid-induced glaucoma by interfering with natural IOP regulation.
Alvarado J A, Wood I, Polansky J R
This study characterized cultured human trabecular cells, finding they retain key features of in-vivo cells, offering a valuable model to understand glaucoma's cellular basis.
Weinreb R N, Bloom E, Baxter J D, Alvarado J, Lan N, O'Donnell J et al.
This study found functional glucocorticoid receptors in human trabecular cells, suggesting direct steroid action on these cells could contribute to steroid-induced glaucoma by impairing aqueous outflow.
Polansky J R, Weinreb R N, Baxter J D, Alvarado J
Researchers successfully grew human trabecular cells in culture using specific conditions, including FGF. This provides a vital tool to study these cells, crucial for understanding glaucoma.
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