Oromucosal Dosage Forms: Novel Formulation Strategies, Delivery and Release

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Physical Pharmacy and Formulation".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 2088

Special Issue Editors


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Guest Editor
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90123 Palermo, Italy
Interests: controlled drug release; bio-adhesive buccal delivery systems; sublingual delivery; lipid-micro and nanoparticles; drug absorption from the oral cavity
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Guest Editor
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90123 Palermo, Italy
Interests: ex-vivo permeation; oromucosal formulations; ocular administration; nanosystems; drug delivery systems; biopolymers; buccal tablets; microparticles; sublingual patches; dissolution kinetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the last few decades, the oral cavity has attracted the interest of the scientific community as a promising alternative route for drug administration. Indeed, the oral mucosa could be particularly interesting for the treatment of local affections as well as for systemic therapies via precisely designed formulations and careful selection of the application site. Both the buccal and sublingual mucosae are highly vascularized, presenting several advantages such as the opportunity to bypass the gastrointestinal tract and first-pass metabolism in the liver. When the sublingual mucosa is chosen as an administration site, the rapid onset of action results in the delivery route being more comfortable and convenient than the intravenous route. Moreover, mouth pathologies ranging from periodontitis to mucositis up to cancerous lesions can greatly benefit from targeted locoregional drug delivery in a manner whereby systemic side effects are avoided, which enhances the patient’s quality of life.

To obtain significant therapeutic results, the design and characterization of innovative pharmaceutical dosage forms suitable for oral cavity application are of crucial importance. This includes the choice of innovative compositions, production techniques and drug release mechanisms.

Therefore, this Special Issue welcomes original research articles and reviews that cover all the aspects of the design, manufacturing, characterization and final formulation of oromucosal drug delivery systems specifically designed to be applied on the oral cavity both for systemic and locoregional therapies.

Research areas of interest include (but are not limited to) the following technologies: film, patch, matrix tablet, nanocomposite, IPEC and microparticles.

Dr. Viviana De Caro
Dr. Giulia Di Prima
Guest Editors

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Keywords

  • buccal route
  • sublingual route
  • oromucosal delivery
  • mucoadhesion
  • mucosal permeability
  • drug delivery systems
  • kinetics of drug release
  • mechanism of drug discharge
  • systemic therapy
  • locoregional buccal treatment

Published Papers (1 paper)

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Research

24 pages, 2270 KiB  
Article
Spray-Dried Cytisine-Loaded Matrices: Development of Transbuccal Sustained-Release Tablets as a Promising Tool in Smoking Cessation Therapy
by Giuseppe Angellotti, Giulia Di Prima, Amalia Giulia Scarpaci, Fabio D’Agostino, Giuseppina Campisi and Viviana De Caro
Pharmaceutics 2022, 14(8), 1583; https://doi.org/10.3390/pharmaceutics14081583 - 29 Jul 2022
Cited by 2 | Viewed by 1507
Abstract
Cytisine (CYT) has emerged as a promising molecule to treat nicotine addiction, since it acts as a partial agonist of nicotinic acetylcholine receptors. However, its unfavorable pharmacokinetic properties lead to multiple administrations per day, reducing the patient’s compliance and increasing the side effects. [...] Read more.
Cytisine (CYT) has emerged as a promising molecule to treat nicotine addiction, since it acts as a partial agonist of nicotinic acetylcholine receptors. However, its unfavorable pharmacokinetic properties lead to multiple administrations per day, reducing the patient’s compliance and increasing the side effects. To overcome these drawbacks, CYT buccal administration is here proposed. Firstly, CYT stability in the buccal environment was assessed and its intrinsic ability to permeate/penetrate the tissue was determined by applying CYT solutions at increasing concentrations. Furthermore, a spray-drying method was selected and optimized as it is an eco-friendly, easily scalable and effective technique to obtain uniform and reproducible CYT-loaded (5% w/w) pharmaceutical powders, which were directly compressed, thus obtaining different buccal delivery systems (BDSs). The obtained BDSs were homogeneous and reproducible and embedded CYT in its amorphous form. The mechanism of CYT release was evaluated in vitro and found to be mainly driven by a Fickian diffusion phenomenon. Predominantly, the ex vivo permeation assays highlighted the ability of the BDSs to enhance CYT permeation, also producing high drug fluxes through the mucosa. Speculative mathematical evaluations based on the already-known CYT pharmacokinetic parameters showed that CYT-loaded BDSs could potentially be sufficient to obtain a therapeutic effect, thus making the reported formulations suitable candidates for further in vivo trials. Full article
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