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Figueiredo MP, Borrego-Sánchez A, García-Villén F, Miele D, Rossi S, Sandri G, Viseras C, Constantino VRL. Polymer/Iron-Based Layered Double Hydroxides as Multifunctional Wound Dressings. Pharmaceutics 2020; 12:E1130. [PMID: 33238477 PMCID: PMC7700130 DOI: 10.3390/pharmaceutics12111130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 11/16/2022] Open
Abstract
This work presents the development of multifunctional therapeutic membranes based on a high-performance block copolymer scaffold formed by polyether (PE) and polyamide (PA) units (known as PEBA) and layered double hydroxide (LDH) biomaterials, with the aim to study their uses as wound dressings. Two LDH layer compositions were employed containing Mg2+ or Zn2+, Fe3+ and Al3+ cations, intercalated with chloride anions, abbreviated as Mg-Cl or Zn-Cl, or intercalated with naproxenate (NAP) anions, abbreviated as Mg-NAP or Zn-NAP. Membranes were structurally and physically characterized, and the in vitro drug release kinetics and cytotoxicity assessed. PEBA-loading NaNAP salt particles were also prepared for comparison. Intercalated NAP anions improved LDH-polymer interaction, resulting in membranes with greater mechanical performance compared to the polymer only or to the membranes containing the Cl-LDHs. Drug release (in saline solution) was sustained for at least 8 h for all samples and release kinetics could be modulated: a slower, an intermediate and a faster NAP release were observed from membranes containing Zn-NAP, NaNAP and Mg-NAP particles, respectively. In general, cell viability was higher in the presence of Mg-LDH and the membranes presented improved performance in comparison with the powdered samples. PEBA containing Mg-NAP sample stood out among all membranes in all the evaluated aspects, thus being considered a great candidate for application as multifunctional therapeutic dressings.
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Affiliation(s)
- Mariana Pires Figueiredo
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo—USP, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil;
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada—UGR, Campus of Cartuja s/n, 18071 Granada, Spain; (A.B.-S.); (F.G.-V.)
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada, Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Ana Borrego-Sánchez
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada—UGR, Campus of Cartuja s/n, 18071 Granada, Spain; (A.B.-S.); (F.G.-V.)
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada, Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Fátima García-Villén
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada—UGR, Campus of Cartuja s/n, 18071 Granada, Spain; (A.B.-S.); (F.G.-V.)
| | - Dalila Miele
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (S.R.); (G.S.)
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (S.R.); (G.S.)
| | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (S.R.); (G.S.)
| | - César Viseras
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada—UGR, Campus of Cartuja s/n, 18071 Granada, Spain; (A.B.-S.); (F.G.-V.)
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada, Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Vera Regina Leopoldo Constantino
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo—USP, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil;
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