Innovations in Ungual and Dermal Drug Delivery Systems for Localized Therapies

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Drug Delivery and Controlled Release".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 902

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Guest Editor
Pharmaceutical Sciences Graduate Program, Universidade Federal do Rio Grande do Sul, Porto Alegre 90610-000, Brazil
Interests: nanoemulsions; skin delivery; controlled drug delivery; essential oils; solid dispersions
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Guest Editor
Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre 90610-000, RS, Brazil
Interests: nanoemulsions; spontaneous emulsification; skin delivery; intranasal delivery; natural products
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The topical treatment of ungual or dermal disorders is impaired by drugs’ physicochemical properties combined with the intrinsic characteristics of the nail plate and cutaneous barrier that lead to the poor permeation of drugs and/or bioactive molecules across its structure, consequentially making it difficult to achieve therapeutic concentrations on the diseased areas. This prompts an interest in developing nano-based systems, hydrogel-based formulations, 3D-printed pharmaceutical dosage forms, dressing films, other innovative systems and other strategies, for instance, microneedling, abrasive techniques, photodynamic therapy and the use of chemical penetration enhancers, as more effective alternatives for the topical treatment of ungual and skin conditions. Conditions such as psoriasis, atopic dermatitis, onycomycosis, wounds and fungal and bacterial infections may benefit from such localized therapies.

This Special Issue aims at gathering a selection of novel research in the area of innovations in ungual and dermal drug delivery, focused on the development of new formulations or methods for evaluating the in vitro and in vivo performance of localized therapies and strategies. Original research articles and reviews are welcome.

Prof. Dr. Letícia Scherer Koester
Dr. Helder Teixeira
Guest Editors

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Keywords

  • nano-based formulations
  • hydrogel-based formulations
  • 3D-printed formulations
  • films
  • biocompatibility
  • ungual
  • dermal
  • in vitro release testing (IVRT)
  • in vitro permeation testing (IVPT)

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Published Papers (1 paper)

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Review

25 pages, 1441 KB  
Review
Nanocarriers in Ungual Drug Delivery
by Sheila Porto de Matos, Karen de Oliveira Araujo, Tainá Kreutz, Valdir Florêncio da Veiga Júnior, Helder Ferreira Teixeira and Letícia Scherer Koester
Pharmaceutics 2025, 17(8), 1060; https://doi.org/10.3390/pharmaceutics17081060 - 15 Aug 2025
Viewed by 688
Abstract
Ungual disorders can impact quality of life, with onychomycosis and nail psoriasis being the most prevalent disorders among the general population. In humans, the main functions of the nail apparatus comprise protection against trauma, improvement of tactile sensations, and allowing precision gripping. In [...] Read more.
Ungual disorders can impact quality of life, with onychomycosis and nail psoriasis being the most prevalent disorders among the general population. In humans, the main functions of the nail apparatus comprise protection against trauma, improvement of tactile sensations, and allowing precision gripping. In order to perform such functions, the nail plate has a hard structure formed by dead keratinized corneocytes tightly bound to each other, giving the nail plate a “barrier-like” character. Due to this property of the nail plate, drug delivery to the region is hindered, making the treatment of ungual disorders difficult, either by systemic or topical drug administration. Many strategies have been developed in the last few decades in an attempt to increase the bioavailability of drugs in the nail. Interest in the employment of nanostructured drug delivery systems aiming to increase the bioavailability of drugs in the nail plate upon topical administration has increased. Moreover, the association of the nanotechnological approaches with other methods may be a beneficial strategy when aiming to increase drug permeation through the nail barrier. In this sense, the present review has the intention of presenting the panorama of the current technological development of nanostructured systems designed for the local treatment of ungual disorders. Through this extensive literature review, it was possible to recognize, among the studies, a lack of standardization regarding the methodology of nail permeation assessment, which imposes an obstacle to comparison. Full article
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