ArticlePharmaceutical research2017
Intranasal Delivery of Topically-Acting Levofloxacin to Rats: a Proof-of-Concept Pharmacokinetic Study.
Article in Pharmaceutical research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
- Stimuli-Responsive Nasal in situ Gel Drug Delivery Systems: from Material Design to Clinical Translation.International journal of nanomedicine · 2026Review
- Review of Intranasal Active Pharmaceutical Ingredient Delivery Systems.Pharmaceuticals (Basel, Switzerland) · 2024Review
- Arginine-Rich Cell-Penetrating Peptide-Mediated Transduction of Mouse Nasal Cells with FOXP3 Protein Alleviates Allergic Rhinitis.Pharmaceutics · 2023Article
- Pre-Clinical Assessment of the Nose-to-Brain Delivery of Zonisamide After Intranasal Administration.Pharmaceutical research · 2020Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo evaluate the potential of levofloxacin intranasal administration as a promising alternative approach to treat local infections such as chronic rhinosinusitis, by delivering drug concentrations directly to the site of infection.
methodsDrug concentrations were measured in plasma, olfactory bulb and nasal mucosa of anterior (ANM) and posterior regions after intranasal (0.24 mg/kg) and intravenous (10 mg/kg) administration to rats, and pharmacokinetic parameters were compared between routes. For intranasal administration a thermoreversible in-situ gel was used.
resultsPlasma and olfactory bulb exposure to levofloxacin was minimal following intranasal dose, preventing systemic and central nervous system adverse effects. Levofloxacin concentration-time profile in ANM revealed higher concentrations during the first 60 min of the study following intranasal administration than the corresponding ones obtained after intravenous administration. A rapid and continuous decay of levofloxacin concentration in this nasal region was observed after intranasal delivery, resulting in much lower values at the last sampling time-points.
conclusionThe higher dose-normalized concentrations and pharmacokinetic exposure parameters of levofloxacin in ANM after intranasal administration, demonstrates that intranasal delivery of the formulated gel is, by itself, advantageous for delivering levofloxacin to biophase and thus an attractive approach in management of chronic rhinosinusitis.
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