pterygium/protease

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[Trefoil factor family gene and peptide expression in pterygium].

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OBJECTIVE Trefoil factor family (TFF) peptides (formerly P-domain peptides; trefoil factor) are small (7-12 kDa) protease-resistant secreted peptides designated pS2 (or TFF1), SP (TFF2) and ITF (TFF3). Human conjunctival goblet cells (GCs) are known to synthesize TFF, but TFF expression by these

Neovascularization and mast cells with tryptase activity increase simultaneously in human pterygium.

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Mast cells (MC) have been implicated in both normal and pathological angiogenesis, such as that in chronic inflammatory diseases and tumors. This assumption is partially supported by the close structural association between MC and blood vessels and the recruitment of these cells during tumor growth.

Overexpression of urokinase-type plasminogen activator in pterygia and pterygium fibroblasts.

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OBJECTIVE Urokinase-type plasminogen activator (uPA) is a protease involved in tissue remodeling and cell migration. Little is known about the expression of uPA in pterygium. The purpose of this study was to investigate the expression of uPA mRNA and activities in various stages of surgically

UVB-mediated down-regulation of proteasome in cultured human primary pterygium fibroblasts.

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Pterygium is a condition characterized by epithelial overgrowth of the cornea, inflammatory cell infiltration and an abnormal extracellular matrix accumulation. Chronic UV exposure is considered as a pathogenic factor of this disease. Proteasome is an intracellular multi-subunit

Conjunctivochalasis is the precursor to pterygium.

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Pterygium is a fibrovascular proliferative condition of the ocular surface with no known pathological mechanism. This condition affects vision due to dry eyes, astigmatism or physical occlusion of the visual axis for severe cases. The only definitive treatment for this condition is surgical

Ultraviolet-A irradiation upregulated urokinase-type plasminogen activator in pterygium fibroblasts through ERK and JNK pathways.

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OBJECTIVE Effects of ultraviolet (UV) B on the pterygium and its cells have been studied previously, whereas little is known on the effects of UVA. Urokinase-type plasminogen activator (uPA) is a protease involved in tissue remodeling and cell migration, and its levels are increased in pterygium.

Expression of SARS-CoV-2 receptor ACE2 and TMPRSS2 in human primary conjunctival and pterygium cell lines and in mouse cornea.

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To determine the expressions of SARS-CoV-2 receptor angiotensin-converting enzyme 2 (ACE2) and type II transmembrane serine protease (TMPRSS2) genes in human and mouse ocular cells and comparison to other tissue cells.Human conjunctiva and primary pterygium

Trefoil factor TFF1-induced protection of conjunctival cells from apoptosis at premitochondrial and postmitochondrial levels.

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OBJECTIVE Goblet cells of the conjunctival epithelium synthesize and secrete TFF1 (Trefoil factor 1), a small protease-resistant peptide that, together with mucins, is responsible for the rheologic properties of the tear film. This study aimed to determine whether TFF1, whose synthesis increases in

UVB-elicited induction of MMP-1 expression in human ocular surface epithelial cells is mediated through the ERK1/2 MAPK-dependent pathway.

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OBJECTIVE Pterygia are common, frequently recurring ocular surface lesions characterized by tissue remodeling, cellular proliferation, angiogenesis, and inflammation. The increased incidence of pterygia in persons exposed to excessive solar radiation suggests that ultraviolet (UV) light may play a

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