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Sarangi MK, Rao MEB, Parcha V. Smart polymers for colon targeted drug delivery systems: a review. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1785455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Manoj Kumar Sarangi
- Department of Pharmacy, Sardar Bhagwan Singh Postgraduate Institute of Biomedical Sciences and Research, Dehradun, India
- Bijupatnaik University of Technology, Rourkela, India
| | - M. E. Bhanoji Rao
- Department of Pharmacy, Roland Institute of Pharmaceutical Sciences, Berhampur, India
- Department of Pharmacy, Calcutta Institute of Pharmaceutical Technology and Allied Health Sciences, Howrah, India
| | - Versha Parcha
- Department of Pharmacy, Sardar Bhagwan Singh Postgraduate Institute of Biomedical Sciences and Research, Dehradun, India
- Department of Applied Chemistry, Dolphin (PG) Institute of Biomedical and Natural Sciences, Dehradun, India
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Cazorla-Luna R, Notario-Pérez F, Martín-Illana A, Bedoya LM, Tamayo A, Rubio J, Ruiz-Caro R, Veiga MD. Development and In Vitro/ Ex Vivo Characterization of Vaginal Mucoadhesive Bilayer Films Based on Ethylcellulose and Biopolymers for Vaginal Sustained Release of Tenofovir. Biomacromolecules 2020; 21:2309-2319. [PMID: 32267682 DOI: 10.1021/acs.biomac.0c00249] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Young women in sub-Saharan Africa have the highest risk of human immunodeficiency virus (HIV) acquisition through sexual contact of all groups. Vaginal controlled release of antiretrovirals is a priority option for the prevention of sexual transmission of the virus in women. In this manuscript, bilayer films were prepared based on ethylcellulose and a natural polymer (xanthan or tragacanth gum) plasticized with glycerol and tributylcitrate for tenofovir-controlled release. The mechanical properties and microstructure of the blank films were characterized by texture analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy. The loaded films were evaluated in simulated vaginal fluid through release and swelling studies and ex vivo mucoadhesion assessments. The results show that the preparation method produced bilayer films with adequate mechanical properties. The contribution of both layers allowed the sustained release of tenofovir and a mucoadhesion time of up to 360 h. The toxicity of the materials was evaluated in three cell lines of vaginal origin. The films constituted by ethylcellulose and xanthan gum in a 2:1 proportion (EX2-D) showed the longest mucoadhesion time, with 15 days of tenofovir-controlled release, zero toxicity, and optimal mechanical properties. These films are therefore a promising option for offering women a means of self-protection against the sexual transmission of HIV.
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Affiliation(s)
- Raúl Cazorla-Luna
- Departamento de Farmacia Galénica y Tecnologı́a Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Fernando Notario-Pérez
- Departamento de Farmacia Galénica y Tecnologı́a Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Araceli Martín-Illana
- Departamento de Farmacia Galénica y Tecnologı́a Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Luis-Miguel Bedoya
- Departamento Farmacologı́a, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Aitana Tamayo
- Departamento de Quı́mica-Fı́sica de Superficies y Procesos, Instituto de Cerámica y Vidrio (ICV), Consejo Superior de Investigaciones Cientı́ficas (CSIC), 28049 Madrid, Spain
| | - Juan Rubio
- Departamento de Quı́mica-Fı́sica de Superficies y Procesos, Instituto de Cerámica y Vidrio (ICV), Consejo Superior de Investigaciones Cientı́ficas (CSIC), 28049 Madrid, Spain
| | - Roberto Ruiz-Caro
- Departamento de Farmacia Galénica y Tecnologı́a Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - María-Dolores Veiga
- Departamento de Farmacia Galénica y Tecnologı́a Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
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