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- W4386925135 abstract "Abstract Elevated intraocular pressure is the main risk factor for glaucoma and its adjustment to physiological levels can prevent progression of the disease. If conventional drop-based glaucoma therapy fails, surgical interventions such as trabeculectomy or the application of implants, which drain aqueous humour from the eye and thus reduce intraocular pressure, are used as final therapeutic procedures. These interventions are becoming increasingly minimally invasive and the drainage implants are getting steadily smaller, which is why these interventions are now called microinvasive glaucoma surgery (MIGS). Both, surgery and drainage implant-based glaucoma therapy are limited by wound healing processes and fibrosis that occlude the newly created drainage pathways for the aqueous humour. To suppress unwanted postoperative fibrosis coupled with an increased extracellular matrix production, cytostatics like mitomycin c or 5- fluorouracil are currently used, which are associated with side effects. Therefore, more specific antifibrotic agents are key for a durable functionality of the interventions in glaucoma therapy. In this study a specific active substance (pirfenidone, PFD) was added in a polymer matrix for controlled release. Previous studies have shown that the release of pirfenidone from a thermoplastic silicone polycarbonate elastomer, which could be used as a material for a glaucoma drainage implant, has been relatively fast. To decelerate the release the influence of the alternate polymers Poly-L-Lactide (PLLA) and Poly-D,LLactide (PDLLA) as alternative drug carriers was investigated. Furthermore, a reduction of the pirfenidone content was used to delay the release." @default.
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- W4386925135 date "2023-09-01" @default.
- W4386925135 modified "2023-09-27" @default.
- W4386925135 title "Pirfenidone release from ophthalmic implants – perspectives for a drug-eluting microstent for glaucoma therapy" @default.
- W4386925135 doi "https://doi.org/10.1515/cdbme-2023-1100" @default.
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