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  • Title: Oro-dental mucoadhesive proniosomal gel formulation loaded with lornoxicam for management of dental pain.
    Author: Abdelbary GA, Aburahma MH.
    Journal: J Liposome Res; 2015; 25(2):107-21. PubMed ID: 25058447.
    Abstract:
    Oro-dental diseases are generally associated with pain that is controlled using oral tablets containing NSAIDs. Lornoxicam, a relatively new NSAID, is effective in relieving pain accompanying different oro-dental problems. The aim of the current research is to prepare oro-dental analgesic and anti-inflammatory gel using provesicular approach to deliver lornoxicam directly to the site of action in the oral cavity. Local administration of lornoxicam is expected to be superior to systemic delivery in pain relieving and poses less GIT adverse effects. Different surfactants were utilized to prepare the proniosomal gels that rapidly transform into nano-sized niosomes after hydration with the oral saliva. The effect of the surfactant structure on vesicles size distribution and entrapment efficiency percentage (EE%) was investigated. The proniosomal formulations were incorporated into carbopol hydrogels that were characterized regarding rheological and mucoadhesion properties. Moreover, ex-vivo mucosal membrane permeation studies were conducted for selected proniosomal gels to quantify the permeation parameters and assess the amount of drug deposited within the oral mucosa. Results revealed that mucoadhesive proniosomes formulation prepared using Span 60 was optimal as it was nano-sized and also showed the highest EE%. The transmucosal flux of lornoxicam, from these proniosomal formulations, across the oral mucosa was significantly higher (p < 0.05) than lornoxicam containing carbopol gel and the percent drug diffused increased more than twofolds. The results collectively suggest that the mucoadhesive proniosomal gels can be assertively considered as a promising carrier for transmucosal delivery of lornoxicam into the oral cavity.
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