Abstract

Background: One of the main reasons of failure in surgical treatment of primary acquired nasolacrimal duct obstruction is excessive postoperative scarring of the dacryostomy. Despite the variety of procedures designed to prevent this, conflicting evidence of their efficacy and safety provide incentive for further research of antifibrotic therapeutics for adjunctive use in dacryocystorhinostomy.Aims: To evaluate the antifibrotic effect of pirfenidone on human nasal mucosal fibroblast cell culture.Materials and methods: Human nasal mucosal fibroblast cell cultures were established using samples obtained from 3 consecutive patients undergoing endonasal endoscopic dacryocystorhinostomy. Cell viability following treatment with pirfenidone was evaluated using MTS-assay. Induced inhibition of cell proliferation and migration was determined using scratch wound assay.Results: In this study pirfenidone exhibited a significant dose-dependent inhibiting effect on fibroblast proliferation with insignificant cell toxicity. Cell viability following 48 hours of incubation with various pirfenidone concentrations did not drop below 80%. The recovery of the fibroblast monolayer assessed after 24 hours of incubation was 84.88 and 8.26% in the control group, at a drug concentration of 0.15 mg/ml. Cell proliferation and migration was severely inhibited in cell culture specimens treated with pirfenidone compared to controls. The difference between groups was statistically significant (p=0,001).Conclusions: In our study pirfenidone demonstrated a pronounced antifibrotic effect. It is unlikely that inhibition of proliferation and migration of human nasal mucosal fibroblasts is mediated by cell toxicity of this medication as it was evaluated as low. Nonetheless an in vitro analysis is insufficient to judge pirfenidone’s efficacy and safety in preventing cicatrix formation following dacrycystorhinostomy.

Highlights

  • One of the main reasons for failure of surgical treatment of primary acquired nasolacrimal duct obstruction is excessive postoperative scarring of the dacryostomy

  • Materials and methods: Samples for cultured human nasal mucosa fibroblasts were obtained from 3 consecutive patients during the endonasal endoscopic dacryocystorhinostomy

  • Induced inhibition of cell proliferation and migration was determined by scratch wound assay

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Summary

АКТУАЛЬНЫЕ ВОПРОСЫ КЛЕТОЧНОЙ ТРАНСПЛАНТОЛОГИИ И ТКАНЕВОЙ ИНЖЕНЕРИИ

Цель исследования ― изучение антифибротических свойств препарата пирфенидон на клеточной культуре фибробластов слизистой оболочки полости носа. Клетки для культуры фибробластов слизистой оболочки полости носа были получены у 3 пациентов во время эндоназальной эндоскопической дакриоцисториностомии. В контрольной группе после 24 ч инкубации восстановление клеточного монослоя произошло практически полностью (на 84,88±4,80%). Результаты настоящего исследования свидетельствуют о высокой антифибротической эффективности препарата пирфенидон, не связанной с цитотоксическим эффектом. Несмотря на невысокую токсичность препарата, по данным этого и других исследований in vitro, вывод о целесообразности и безопасности применения препарата в профилактике заращения соустья после дакриоцисториностомии возможно сделать только на основании исследования in vivo. (Для цитирования: Атькова Е.Л., Краховецкий Н.Н., Ярцев В.Д., Суббот А.М., Габашвили А.Н., Рейн Д.А., Нестерова Т.В. Изучение антифибротических свойств препарата пирфенидон на клеточной культуре фибробластов слизистой оболочки полости носа. Evaluation of Antifibrotic Effect of Pirfenidone on Cultured Human Nasal Mucosa Fibroblasts

Background
Дизайн исследования
Критерии соответствия сле трехкратной промывки PBS докрашивали ядра клеток
Сканирование проводили с помощью конфокального
Принципы расчета размера выборки
Резюме основного результата исследования
Пирфенидон предотвращал развитие пролиферативной
Ограничения исследования

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