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Cao W, Chen J, Wu L, Xu YH, Meng Y, Li X, Zheng Z, Chu X. A Novel Molecular Reservoir Based on Reverse Self-Assembled Liquid Crystals - A New Strategy for Prolonging the Duration in Action of Analgesics. J Pharm Sci 2023; 112:1985-1996. [PMID: 37088153 DOI: 10.1016/j.xphs.2023.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
PURPOSE The aim of this study was to develop liquid crystal (LC) precursors to obtain novel long-acting analgesics for injection based on depot systems and compare the difference between the cubic and hexagonal precursors in delivering Diclofenac sodium (DS). METHODS Diclofenac sodium liquid crystal precursor injections were prepared and characterized, followed by in vitro release, pharmacodynamic, and pharmacokinetic studies. RESULTS The optimal formulations were prepared with a ratio of Phytantriol/ethanol/water as 76:19:5 for cubic LC precursors, and a ratio of Phytantriol/ethanol/water/Vitamine-E acetate as 72:18:5:5 for hexagonal, both loading various drug dosages (2.5%, 3.75% and 5%), respectively. Polarized light microscopy and small angle diffraction confirmed that the precursors were isotropic fluids and transformed into gels with Pn3m or HII framework in water. Rheological studies have shown that precursors belong to Newtonian fluids and gels to pseudoplastic fluids. The release showed that the DS in the commercial injection (DS-inj) was completely liberated within 6 h, whereas only 46.55% and 49.73% of the DS in 2.5% cubic precursors and 2.5% hexagonal precursors were freed, respectively. Pharmacodynamic studies have shown that cubic, hexagonal and DS-inj raised the pain threshold in mice by 169.4%, 157.3% and 113.79%, respectively. The mean retention times of DS in cubic and hexagonal were 3.16 and 2.67 times longer than DS-inj, respectively, according to pharmacokinetic results. CONCLUSION In conclusion, cubic and hexagonal are both promising analgesic sustained release formulations. In addition, based only on the current comparison, cubic seems to have a better long-acting effect.
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Affiliation(s)
- Wenxuan Cao
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Jingbao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Long Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Yu Hang Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Yun Meng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Xiang Li
- Anhui Province Institute for Food and Drug Control, Hefei, Anhui, 230012, China
| | - Zhiyun Zheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei 230012, China; Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, 230012, China; Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM) , Hefei, Anhui, 230012, China
| | - Xiaoqin Chu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei 230012, China; Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, 230012, China; Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM) , Hefei, Anhui, 230012, China.
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Chavda VP, Dawre S, Pandya A, Vora LK, Modh DH, Shah V, Dave DJ, Patravale V. Lyotropic liquid crystals for parenteral drug delivery. J Control Release 2022; 349:533-549. [PMID: 35792188 DOI: 10.1016/j.jconrel.2022.06.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
Abstract
The necessity for long-term treatments of chronic diseases has encouraged the development of novel long-acting parenteral formulations intending to improve drug pharmacokinetics and therapeutic efficacy. Lately, one of the novel approaches has been developed based on lipid-based liquid crystals. The lyotropic liquid crystal (LLC) systems consist of amphiphilic molecules and are formed in presence of solvents with the most common types being cubic, hexagonal and lamellar mesophases. LC injectables have been recently developed based on polar lipids that spontaneously form liquid crystal nanoparticles in aqueous tissue environments to create the in-situ long-acting sustained-release depot to provide treatment efficacy over extended periods. In this manuscript, we have consolidated and summarized the various type of liquid crystals, recent formulation advancements, analytical evaluation, and therapeutic application of lyotropic liquid crystals in the field of parenteral sustained release drug delivery.
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, L M College of Pharmacy, Ahmedabad 380009, India; Department of Pharmaceutics & Pharm, Technology, K. B. Institute of Pharmaceutical Education and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, Gujarat, India.
| | - Shilpa Dawre
- Department of Pharmaceutics, SVKM's Narsee Monjee Institute of Management Studies (NMIMS), Shirpur, India
| | - Anjali Pandya
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai 400 019, India
| | - Lalitkumar K Vora
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, BT9 7BL, UK.
| | - Dharti H Modh
- Department of Medicinal Chemistry, Bharati Vidyapeeth's Poona College of Pharmacy, Pune, India
| | - Vidhi Shah
- Department of Pharmaceutics and Pharmaceutical Technology, L M College of Pharmacy, Ahmedabad 380009, India
| | - Divyang J Dave
- Department of Pharmaceutics & Pharm, Technology, K. B. Institute of Pharmaceutical Education and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, Gujarat, India
| | - Vandana Patravale
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai 400 019, India
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Okada A, Niki R, Inoue Y, Tomita J, Todo H, Itakura S, Sugibayashi K. Development of Self-Administered Formulation to Improve the Bioavailability of Leuprorelin Acetate. Pharmaceutics 2022; 14:785. [PMID: 35456619 PMCID: PMC9031317 DOI: 10.3390/pharmaceutics14040785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 02/05/2023] Open
Abstract
In recent years, the development of self-injectable formulations has attracted much attention, and the development of formulations to control pharmacokinetics, as well as drug release and migration in the skin, has become an active research area. In the present study, the development of a lipid-based depot formulation containing leuprorelin acetate (LA) as an easily metabolizable drug in the skin was prepared with a novel non-lamellar liquid-crystal-forming lipid of mono-O-(5,9,13-trimethyl-4-tetradecenyl) glycerol ester (MGE). Small-angle X-ray scattering, cryo-transmission electron microscopy, and nuclear magnetic resonance observations showed that the MGE-containing formulations had a face-centered cubic packed micellar structure. In addition, the bioavailability (BA) of LA after subcutaneous injection was significantly improved with the MGE-containing formulation compared with the administration of LA solution. Notably, higher Cmax and faster Tmax were obtained with the MGE-containing formulation, and the BA increased with increasing MGE content in the formulation, suggesting that LA migration into the systemic circulation and its stability might be enhanced by MGE. These results may support the development of self-administered formulations of peptide drugs as well as nucleic acids, which are easily metabolized in the skin.
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Affiliation(s)
- Akie Okada
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
| | - Rina Niki
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
| | - Yutaka Inoue
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
| | - Junki Tomita
- Research Analysis Center, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan;
| | - Hiroaki Todo
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
| | - Shoko Itakura
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
| | - Kenji Sugibayashi
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado 350-0295, Saitama, Japan; (A.O.); (R.N.); (Y.I.); (S.I.); (K.S.)
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