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Zhang G, Li X, Huang C, Jiang Y, Su J, Hu Y. Preparation of the Levo-Tetrahydropalmatine Liposome Gel and Its Transdermal Study. Int J Nanomedicine 2023; 18:4617-4632. [PMID: 37600118 PMCID: PMC10438440 DOI: 10.2147/ijn.s422305] [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: 05/27/2023] [Accepted: 08/03/2023] [Indexed: 08/22/2023] Open
Abstract
Purpose The aim of this study was to develop a liposome gel containing levo-tetrahydropalmatine (l-THP) and evaluate its transdermal properties. Methods A L16 (43) orthogonal experiment was conducted to optimize the preparation of l-THP liposomes and assess their characterization and stability in a gel. The transdermal features were analyzed through in vivo and in vitro experiments on rats and Strat-M® membrane, respectively. The metabolism of l-THP in liver and skin S9 fractions was also studied. Results The optimization of the orthogonal experiment revealed that the ideal mass ratio of phosphatidylcholine, cholesterol, and l-THP during preparation was 10:1:3. The resulting liposome exhibited a particle size of 68 nm, a PDI of 0.27, a drug loading of 4.33%, an encapsulation of 18.79%, and a zeta potential of -41.27 mV. Both the l-THP and its liposome-gel formulation were found to be stable for a duration of 45 days at 4 °C and 30 °C. During the in vivo transdermal study, the maximum concentration (Cmax) of l-THP from the liposome gel was 0.16 μg/mL, and the time to reach this maximum concentration (tmax) was 1.2 hours. The relative bioavailability of l-THP in the liposome gel was 233.8% compared to the emulsion. The concentration of l-THP (prepared in PBS) decreased at a rate of 0.0067 μg/mL/min in the liver S9 fraction and 0.0027 μg/mL/min in the skin S9 fraction, however, this difference was not observed when l-THP was encapsulated in liposomes. l-THP passed through the Strat-M® membrane at a rate of 0.0032 mg/cm2/h and 0.002 mg/cm2/h for the emulsion and liposome gel, respectively. Conclusion The optimal process for the preparation of l-THP liposomes was obtained. Compared to the emulsion, the liposomes provided greater bioavailability when used transdermally. The liposomes also provided greater stability for l-THP during storage.
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Affiliation(s)
- Guizhen Zhang
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
| | - Xuejian Li
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
| | - Chunyun Huang
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
| | - Yuanyuan Jiang
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
| | - Jian Su
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
| | - Ying Hu
- Faculty of Pharmacy, Guangxi University of Chinese Medicine, Nanning, Guangxi, People’s Republic of China
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Duffy C, Zetterlund PB, Aldabbagh F. Radical Polymerization of Alkyl 2-Cyanoacrylates. Molecules 2018; 23:molecules23020465. [PMID: 29461508 PMCID: PMC6017548 DOI: 10.3390/molecules23020465] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 11/27/2022] Open
Abstract
Cyanoacrylates (CAs) are well-known fast-setting adhesives, which are sold as liquids in the presence of stabilizers. Rapid anionic polymerization on exposure to surface moisture is responsible for instant adhesion. The more difficult, but synthetically more useful radical polymerization is only possible under acidic conditions. Recommendations on the handling of CAs and the resulting polymers are provided herein. In this review article, after a general description of monomer and polymer properties, radical homo- and copolymerization studies are described, along with an overview of nanoparticle preparations. A summary of our recently reported radical polymerization of CAs, using reversible addition-fragmentation chain transfer (RAFT) polymerization, is provided.
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Affiliation(s)
- Cormac Duffy
- Henkel Ireland Operations & Research Limited, Whitestown, Dublin 24, Ireland.
- School of Chemistry, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland.
| | - Per B Zetterlund
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
| | - Fawaz Aldabbagh
- School of Chemistry, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland.
- Present address: Department of Pharmacy, School of Life Sciences, Pharmacy & Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames KT1 2EE, UK.
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Liang J, Yan H, Yang HJ, Kim HW, Wan X, Lee J, Ko S. Synthesis and controlled-release properties of chitosan/β-Lactoglobulin nanoparticles as carriers for oral administration of epigallocatechin gallate. Food Sci Biotechnol 2016; 25:1583-1590. [PMID: 30263448 DOI: 10.1007/s10068-016-0244-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 10/11/2016] [Accepted: 10/11/2016] [Indexed: 11/26/2022] Open
Abstract
A nano-sized double-walled carrier composed of chitosan and β-lactoglobulin (β-Lg) for oral administration of epigallocatechin gallate (EGCG) was developed to achieve a prolonged release of EGCG in the gastrointestinal tract. Carboxymethyl chitosan (CMC) solution was added dropwise to chitosan hydrochloride (CHC) containing EGCG to form a primary coating by ionic complexation. Subsequently, β-Lg was added to create a secondary layer by ionic gelation. The obtained EGCG-loaded chitosan/β-Lg nanoparticles had sizes between 100 and 500 nm and zeta potentials ranging from 10 to 35mV. FT-IR spectroscopy revealed a high number of hydrogen-bonding sites in the nanoparticles, which could incorporate EGCG, resulting in high encapsulation efficiency. EGCG incorporated in the primary coating was released slowly over time by diffusion from the swollen CMC-CHC matrix after the outer layer of β-Lg was degraded in the intestinal fluid. The sustained-release property makes chitosan/β-Lg nanoparticles an attractive candidate for effective delivery of EGCG.
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Affiliation(s)
- Jin Liang
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
- 2Department of Food Science and Biotechnology, Sejong University, Seoul, 05006 Korea
| | - Hua Yan
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Han-Joo Yang
- 2Department of Food Science and Biotechnology, Sejong University, Seoul, 05006 Korea
| | - Hye Won Kim
- 2Department of Food Science and Biotechnology, Sejong University, Seoul, 05006 Korea
| | - Xiaochun Wan
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Jinhee Lee
- 3Department of Food Science and Biotechnology, Cha University, Seongnam, Gyeonggi, 13488 Korea
| | - Sanghoon Ko
- 2Department of Food Science and Biotechnology, Sejong University, Seoul, 05006 Korea
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Pan W, Qin M, Zhang G, Long Y, Ruan W, Pan J, Wu Z, Wan T, Wu C, Xu Y. Combination of hydrotropic nicotinamide with nanoparticles for enhancing tacrolimus percutaneous delivery. Int J Nanomedicine 2016; 11:4037-50. [PMID: 27578973 PMCID: PMC4998035 DOI: 10.2147/ijn.s108545] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Tacrolimus (FK506), an effective immunosuppressant for treating inflammatory skin diseases, hardly penetrates into and through the skin owing to its high hydrophobicity and molecular weight. The aim of this study was to develop a hybrid system based on nicotinamide (NIC) and nanoparticles (NPs) encapsulating FK506, such as FK506–NPs–NIC, for facilitating percutaneous delivery, which exploited virtues of both NIC and NPs to obtain the synergetic effect. Solubility and percutaneous permeation studies were carried out. The results showed that NIC could increase the solubility and permeability of FK506 and that 20% (w/v) NIC presented higher FK506 permeability and was thus chosen as the hydrotropic solution to solubilize FK506 and prepare FK506–NPs–NIC. Hyaluronic acid (HA) was chemically conjugated with cholesterol (Chol) to obtain amphiphilic conjugate of HA–Chol, which self-assembled NPs in 20% NIC solution containing FK506. The particle size, zeta potential, and morphology of NPs were characterized. The encapsulation efficiency and in vitro percutaneous permeation of NPs were evaluated in the presence and absence of NIC. The results demonstrated that hydrotropic solubilizing FK506 was readily encapsulated into NPs with a higher encapsulation efficiency of 79.2%±4.2%, and the combination of NPs with NIC exhibited a significantly synergistic effect on FK506 deposition within the skin (2.39±0.53 μg/cm2) and penetration through the skin (13.38±2.26 μg/cm2). The effect of the combination of NPs with NIC on drug permeation was further visualized by confocal laser scanning microscope through in vivo permeation studies, and the results confirmed that NPs–NIC synergistically enhanced the permeation of the drug into the skin. The cellular uptake performed in HaCaT cells presented a promoting effect of NPs on cellular uptake. These overall results demonstrated that HA–Chol–NPs–NIC can synergistically improve the percutaneous delivery of FK506, and it is a novel potential strategy based on a nano-sized carrier for FK506 to treat skin diseases.
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Affiliation(s)
- Wenhui Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Mengyao Qin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Guoguang Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yueming Long
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Wenyi Ruan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jingtong Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zushuai Wu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Tao Wan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Chuanbin Wu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yuehong Xu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
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Mamo T, Moseman EA, Kolishetti N, Salvador-Morales C, Shi J, Kuritzkes DR, Langer R, von Andrian U, Farokhzad OC. Emerging nanotechnology approaches for HIV/AIDS treatment and prevention. Nanomedicine (Lond) 2010; 5:269-85. [PMID: 20148638 DOI: 10.2217/nnm.10.1] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Currently, there is no cure and no preventive vaccine for HIV/AIDS. Combination antiretroviral therapy has dramatically improved treatment, but it has to be taken for a lifetime, has major side effects and is ineffective in patients in whom the virus develops resistance. Nanotechnology is an emerging multidisciplinary field that is revolutionizing medicine in the 21st century. It has a vast potential to radically advance the treatment and prevention of HIV/AIDS. In this review, we discuss the challenges with the current treatment of the disease and shed light on the remarkable potential of nanotechnology to provide more effective treatment and prevention for HIV/AIDS by advancing antiretroviral therapy, gene therapy, immunotherapy, vaccinology and microbicides.
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Affiliation(s)
- Tewodros Mamo
- Laboratory of Nanomedicine and Biomaterials, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
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