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In vitro ciliotoxicity and cytotoxicity testing of repeated chronic exposure to topical nasal formulations for safety studies [Elektronski vir]Tratnjek, Larisa ...Certain active drugs and excipients of nasal formulations may impair ciliary function and mucociliary clearance. The ciliary beat frequency (CBF) is a key parameter for determining mucociliary ... clearance rate, and in vitro assessments of CBF have proven to be accurate and reproducible. Since topical nasal formulations are applied with repeated doses, it is essential to elucidate their chronic, as opposed to acute, effect on mucociliary clearance and nasal mucosa. The aim of this study was to assess for the first time the ciliotoxicity and cytotoxicity of nasal sprays intended for chronic treatment (with repeated doses) using a previously designed set-up for CBF measurements. For 2 weeks, the 3D nasal MucilAir in vitro models were treated daily with undiluted or clinically relevant doses of mometasone nasal spray, placebo nasal spray, culture medium, or they were untreated. We demonstrated a dose-dependent and time-dependent (cumulative) effect of the nasal sprays on ciliary activity and cytotoxicity using CBF measurements and ultrastructural analysis, respectively. Our results indicate that repeated administration of clinically relevant doses of mometasone nasal spray is safe for in vivo use, which is in good agreement with a previous clinical study. Overall, our study suggests that such in vitro assays have great potential for topical nasal drug screening.Source: Pharmaceutics [Elektronski vir]. - ISSN 1999-4923 (Vol. 13, iss. 11, 2021, str. 1-20)Type of material - e-articlePublish date - 2021Language - englishCOBISS.SI-ID - 81714179
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Tratnjek, Larisa | 33100 |
Sibinovska, Nadica | |
Kristan, Katja, 1975- | 24392 |
Erdani-Kreft, Mateja | 15873 |
Source: Personal bibliographies
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