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Miranda P, Castro A, Díaz P, Minini L, Ferraro F, Paulsen E, Faccio R, Pardo H. Novel Thermosensitive and Mucoadhesive Nasal Hydrogel Containing 5-MeO-DMT Optimized Using Box-Behnken Experimental Design. Polymers (Basel) 2024; 16:2148. [PMID: 39125174 PMCID: PMC11314354 DOI: 10.3390/polym16152148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 08/12/2024] Open
Abstract
We present the development and characterization of a nasal drug delivery system comprised of a thermosensitive mucoadhesive hydrogel based on a mixture of the polymers Poloxamer 407, Poloxamer 188 and Hydroxypropyl-methylcellulose, and the psychedelic drug 5-methoxy-N,-N-dimethyltryptamine. The development relied on a 3 × 3 Box-Behnken experimental design, focusing on optimizing gelification temperature, viscosity and mucoadhesion. The primary objective of this work was to tailor the formulation for efficient nasal drug delivery. This would increase contact time between the hydrogel and the mucosa while preserving normal ciliary functioning. Following optimization, the final formulation underwent characterization through an examination of the in vitro drug release profile via dialysis under sink conditions. Additionally, homogeneity of its composition was assessed using Raman Confocal Spectroscopy. The results demonstrate complete mixing of drug and polymers within the hydrogel matrix. Furthermore, the formulation exhibits sustained release profile, with 73.76% of the drug being delivered after 5 h in vitro. This will enable future studies to assess the possibility of using this formulation to treat certain mental disorders. We have successfully developed a promising thermosensitive and mucoadhesive hydrogel with a gelling temperature of around 32 °C, a viscosity close to 100 mPas and a mucoadhesion of nearly 4.20 N·m.
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Affiliation(s)
- Pablo Miranda
- Unidad de Nanotecnología, Instituto Polo Tecnológico de Pando, Facultad de Química, Universidad de la República, Montevideo 91000, Uruguay; (P.M.); (A.C.)
| | - Analía Castro
- Unidad de Nanotecnología, Instituto Polo Tecnológico de Pando, Facultad de Química, Universidad de la República, Montevideo 91000, Uruguay; (P.M.); (A.C.)
| | - Paola Díaz
- Biomind Labs, Brookfield Place, 181 Bay Street, Suite 1800, Toronto, ON M5J 2T9, Canada; (P.D.); (L.M.); (F.F.)
| | - Lucía Minini
- Biomind Labs, Brookfield Place, 181 Bay Street, Suite 1800, Toronto, ON M5J 2T9, Canada; (P.D.); (L.M.); (F.F.)
| | - Florencia Ferraro
- Biomind Labs, Brookfield Place, 181 Bay Street, Suite 1800, Toronto, ON M5J 2T9, Canada; (P.D.); (L.M.); (F.F.)
| | - Erika Paulsen
- Instituto de Ingeniería Química, Facultad de Ingeniería, Universidad de la República, Montevideo 11800, Uruguay;
| | - Ricardo Faccio
- Área Física, DETEMA, Facultad de Química, Universidad de la República, Montevideo 11300, Uruguay;
| | - Helena Pardo
- Unidad de Nanotecnología, Instituto Polo Tecnológico de Pando, Facultad de Química, Universidad de la República, Montevideo 91000, Uruguay; (P.M.); (A.C.)
- Área Física, DETEMA, Facultad de Química, Universidad de la República, Montevideo 11300, Uruguay;
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Li D, Shangguan J, Yu F, Lin G, Pan H, Zhang M, Lin H, Chen B, Xu H, Hu S. Growth Factors-Loaded Temperature-Sensitive Hydrogel as Biomimetic Mucus Attenuated Murine Ulcerative Colitis via Repairing the Mucosal Barriers. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7686-7699. [PMID: 38289234 DOI: 10.1021/acsami.3c15684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
The pathogenesis of ulcerative colitis (UC) is associated with the shedding of the gut mucus. Herein, inspired by the biological functions of mucus, growth factors-loaded in situ hydrogel (PHE-EK) was designed for UC treatment by integrating dihydrocaffeic acid-modified poloxamer as a thermosensitive material with hyaluronic acid (colitis-specific adhesive), epigallocatechin-3-gallate (antibacterial agent), and bioactive factors (KPV tripeptide and epidermal growth factor). PHE-EK presented good thermosensitive properties, as a flowable liquid at room temperature and gelled within 10 s when exposed to body temperature. PHE-EK hydrogel presented good mechanical strength with a strain of 77.8%. Moreover, PHE-EK hydrogel displayed antibacterial activity against Escherichia coli. Importantly, in vitro and in vivo adhesive tests showed that the PHE-EK hydrogel could specifically adhere to the inflamed colon via electrostatic interaction. When PHE-EK as a biomimetic mucus was rectally administrated to colitis rats, it effectively hindered the body weight loss, reduced the disease activity index and improved the colonic shorting. Moreover, the expression of pro-inflammatory cytokines (e.g., IL-1β, IL-6, and TNF-α) at the laminae propria or epitheliums of the colon for colitis rats was substantially inhibited by PHE-EK. Besides, the colonic epitheliums were well rearranged, and the tight junction proteins (Zonula-1 and Claudin-5) between them were greatly upregulated after PHE-EK treatment. Collectively, PHE-EK might be a promising therapy for UC.
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Affiliation(s)
- Dingwei Li
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province 325000, China
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Jianxun Shangguan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Fengnan Yu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Gaolong Lin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Hanxiao Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Mengjiao Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Haoran Lin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Ben Chen
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Helin Xu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Sunkuan Hu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province 325000, China
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Ma L, Shi T, Liu X, Wang X, Zhang X. Structural properties of HPMC/PEG/CS thermosensitive porous hydrogels. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04576-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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