English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

This investigation was undertaken to determine prolonged adverse effects of benzalkonium chloride (BzCl), a cationic surfactant, and sodium dodecyl sulfate (SDS), an anionic surfactant, after an initial treatment of and subsequent removal from a primary culture system of rabbit corneal epithelial cells. Metabolic integrity and cell growth were evaluated at specified periods after a 1-hr treatment with the surfactants because of their importance in tissue repair. Intracellular calcium ([Ca2+]i) and intracellular pH (pHi) were also measured because of their importance in cellular homeostasis. ATP/ADP ratios were used to assess metabolic integrity, and propidium iodide staining of cells was used to measure relative cell number and cell growth. Digitized fluorescence imaging was used to measure [Ca2+]i with fura-PE3 and pHi with 2',7'-bis(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF). BzCl induced a concentration-dependent decrease in ATP/ADP ratios 24 hr after its removal from the cultures, whereas SDS had minimal effects on metabolic integrity throughout the 48-hr postexposure measurement period. The proliferative response of cultures treated with SDS, however, was decreased when compared with BzCl-treated cells. BzCl induced an increase in [Ca2+]i, whereas SDS decreased [Ca2+]i 1-3 hr after removal of surfactants. BzCl produced a sustained decrease in pHi in surviving cells 1-4 hr after its removal, with a return to control values at 24-48 hr. SDS transiently increased pHi 1 hr after its removal and decreased pHi at the 48-hr post-treatment period. In conclusion, the two surfactants in vitro had distinctly different prolonged effects on corneal epithelial cells, which may suggest that BzCl and SDS differentially affect cellular recovery in vivo.

Prolonged Adverse Effects of Benzalkonium Chloride and Sodium Dodecyl Sulfate in a Primary Culture System of Rabbit Corneal Epithelial Cells