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Open AccessArticle

Mucoadhesive Buccal Films for Local Delivery of Lactobacillus brevis

Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127 Bologna, Italy
Department of Life, Health and Environmental Sciences, University of L’Aquila, Via Pompeo Spennati, Building Rita Levi Montalcini, Coppito, 67100 L’Aquila, Italy
Department of Chemistry “Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
Department of Chemistry and Chemical Technology, Calabria University, Arcavacata di Rende, Via P. Bucci, Cubo 15D, 87036 Cosenza, Italy
Author to whom correspondence should be addressed.
Pharmaceutics 2020, 12(3), 241;
Received: 10 February 2020 / Revised: 28 February 2020 / Accepted: 6 March 2020 / Published: 8 March 2020
(This article belongs to the Special Issue Mucoadhesive and Mucosal Drug Delivery Systems)
The aim of this work was to prepare mucoadhesive buccal films for local release of Lactobacillus brevis CD2, which shows interesting anti-inflammatory properties due to its high levels of arginine deiminase. Hydroxypropylmethylcellulose-based films were prepared by means of a modified casting method, which allowed L. brevis CD2 loading on one side of the film, before its complete drying. Three batches of films were prepared, stored at +2–8 °C and +23–25 °C for 48 weeks and characterized in terms of physico-chemical and functional properties. For each batch, the L. brevis viable count and arginine deiminase activity were evaluated at different time points in order to assess functional property maintenance over time. Moreover, the mucoadhesive properties and ability of the films to release L. brevis CD2 were evaluated. A good survival of L. brevis CD2 was observed, particularly at the storage temperature of +2–8 °C, while the activity of arginine deiminase was maintained at both temperature values. Films showed good mucoadhesive properties and guaranteed a prolonged release of viable lactobacilli, which can be directed towards the whole buccal cavity or specific mucosa lesions. In conclusion, the proposed preparative method can be successfully employed for the production of buccal films able to release viable L. brevis CD2 cells that maintain the anti-inflammatory enzymatic activity. View Full-Text
Keywords: Lactobacillus brevis CD2; arginine deiminase activity; buccal films; hydroxypropylmethylcellulose; mucoadhesion Lactobacillus brevis CD2; arginine deiminase activity; buccal films; hydroxypropylmethylcellulose; mucoadhesion
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Abruzzo, A.; Vitali, B.; Lombardi, F.; Guerrini, L.; Cinque, B.; Parolin, C.; Bigucci, F.; Cerchiara, T.; Arbizzani, C.; Gallucci, M.C.; Luppi, B. Mucoadhesive Buccal Films for Local Delivery of Lactobacillus brevis. Pharmaceutics 2020, 12, 241.

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