The Effect of Lamium Album Extract on Cultivated Human Corneal Epithelial Cells (10.014 PRSV-T)

Overview

Journal J Ophthalmic Vis Res

Specialty Ophthalmology

Date 2016 Jan 6

PMID 26730306

Citations 8

Authors

Roman Paduch

Anna Wozniak

Affiliations

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Abstract

Purpose: To evaluate the effect of Lamium album extract on human corneal epithelial cells (10.014 pRSV-T cell line) cultured in vitro.

Methods: Normal human corneal epithelial cells were incubated with ethanol, ethyl acetate and heptane extracts from Lamium album. Their effect on cells was evaluated by neutral red (NR) uptake and MTT assays for cytotoxicity, ELISA for immunomodulation, Griess method for nitric oxide levels, DPPH assay for free radicals scavenging activity. A blank control consisted only of culture medium.

Results: In NR and MTT assays, Lamium album extracts did not affect cell viability (80% at 125 μg/ml concentration). Ethanol was the least toxic extract (cell viability over 88%) and expressed the most potent reactive oxygen species (ROS) scavenging action. It was 19.88 ± 0.87% higher than controls representing a reduction corresponding to 7.136 μg/ml of trolox. Heptane extract revealed no ROS scavenging activity. All extracts decreased NO production by cells. The most active extract was ethanol (8 μg/ml) which reduced NO level to 0.242 μM (75% decrease compared to control). Extracts influenced pro-inflammatory (IL-1, IL-6, TNF-α) and anti-inflammatory (IL-10) cytokines levels reducing all of them in general. The strongest reduction in tested cytokines level was observed by the heptane extract. On the other hand, the ethanol extract induced mainly TNF-α level in a concentration dependent manner.

Conclusion: Selected Lamium album extracts influence human corneal epithelial cells. Generally, while not toxic, they modulate pro-inflammatory and anti-inflammatory cytokines levels, and decrease NO release by cells; moreover, ethanol and ethyl acetate extracts reduce ROS levels.

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