1
|
Liu J, Zhang Y, Liu C, Fang L. Effect of Physicochemical Properties on the Basic Drug-Acid-Polymer Interactions and Miscibility in PVA Based Orodispersible Films. AAPS J 2024; 26:83. [PMID: 39009955 DOI: 10.1208/s12248-024-00949-z] [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: 04/02/2024] [Accepted: 06/09/2024] [Indexed: 07/17/2024] Open
Abstract
Salts of weakly basic drugs can partially dissociate in formulations, to give basic drugs and counter acids. The aim of the present study was to clarify the effect of physicochemical properties on the basic drug-acid-polymer interactions and salt-polymer miscibility, and to explain the influence mechanism at the molecular level. Six maleate salts with different physicochemical properties were selected and PVA was used as the film forming material. The relationship between the physicochemical properties and the miscibility was presented with multiple linear regression analysis. The existence state of salts in formulations were determined by XRD and Raman imaging. The stability of salts was characterized by NMR and XPS. The intermolecular interactions were investigated by FTIR and NMR. The results showed that the salt-PVA miscibility was related to polar surface area of salts and Tg of free bases, which represented hydrogen bond interaction and solubility potential. The basic drug-acid-PVA intermolecular interactions determined the existence state and bonding pattern of the three molecules. Meanwhile, the decrease of the stability after formulation increased the number of free bases in orodispersible films, which in turn affected the miscibility with PVA. The study provided references for the rational design of PVA based orodispersible films.
Collapse
Affiliation(s)
- Jie Liu
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, Liaoning, China
| | - Yongguo Zhang
- Department of Gastroenterology, General Hospital of Northern Theater Command (Formerly General Hospital of Shenyang Military Area), Shenyang, 110840, China
| | - Chao Liu
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, Liaoning, China
| | - Liang Fang
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, Liaoning, China.
| |
Collapse
|
2
|
Hou Z, Shi D, Lin J, Zhao X, Zhang H, Ding J. Effect of ion pair strategy on transdermal delivery of guanfacine: Which factor dominates drug permeation? Int J Pharm 2024; 652:123835. [PMID: 38262582 DOI: 10.1016/j.ijpharm.2024.123835] [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: 10/08/2023] [Revised: 01/10/2024] [Accepted: 01/20/2024] [Indexed: 01/25/2024]
Abstract
Ion pair is an effective chemical approach to promoting drug transdermal permeation, and the traditional interpretation for its enhanced permeation effect is mainly attributed to counterions altering the physicochemical properties of the drug (lipophilicity, melting point, etc.). In this work, guanfacine (GFC), a non-stimulant for anti-attention deficit and hyperactivity disorder (ADHD), was used as a model drug, and several organic or inorganic acids were designed thereby successfully constructing ion pairs. The transdermal permeation ability of ion pairs through isolated porcine skin was observed and ranked as follows: guanfacine caprylate (GFC-CA) > GFC > guanfacine laurate (GFC-LA) > guanfacine fumarate (GFC-FA) > guanfacine hydrochloride (GFC-HA) > guanfacine palmitate (GFC-PA). The effect of key physicochemical properties (octanol-water partition coefficient, molecular volume, melting point) on the transdermal permeation rate of the model drug was analyzed in detail. In addition, GFC-CA was observed to alter the lipid structure of the skin, suggesting the traditional explanation of the action of ion pair may be inadequate and underrated, and ion pair may also enhance permeation by disrupting skin structure. The intriguing phenomenon is expected to provide a novel approach to achieving precise transdermal drug delivery.
Collapse
Affiliation(s)
- Zhiyuan Hou
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China
| | - Difu Shi
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China
| | - Jianing Lin
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China
| | - Xiangcheng Zhao
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China
| | - Hailong Zhang
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China; Changsha Jingyi Pharmaceutical Technology Co., LTD, Changsha, Hunan 410006, China
| | - Jinsong Ding
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410006, China.
| |
Collapse
|
3
|
Wang L, Pang Y, Zheng Q, Ruan J, Fang L, Liu C. Development of mabuterol transdermal patch: Molecular mechanism study of ion-pair improving patch stability. Int J Pharm 2023; 644:123302. [PMID: 37572858 DOI: 10.1016/j.ijpharm.2023.123302] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
This paper aimed to prepare a Mabuterol (MAB) patch for treating asthma by ion-pair strategy to overcome the drug's thermal instability and elucidate the molecular mechanisms of the stabilization effect. The formulation factor, including counter-ion and pressure-sensitive adhesive (PSA), was optimized by the stability and in vitro skin permeation studies. The molecular mechanism of ion-pair stability was characterized using TGA, Raman, FT-IR, NMR, XPS, and molecular modeling. The optimized patch comprised MAB-Lactic acid (MAB-LA) and hydroxyl adhesive (AAOH) as the matrix, with Q = 126.47 ± 9.75 μg/cm2 and Fabs = 75.27%. The increased TGA (213.11 °C), disproportionation energy (ΔG = 97.44 KJ), and ion-pair lifetime (Tlife = 2.21 × 103) indicated that the counter-ion improved MAB stability through strong ionic and hydrogen bonds with LA. The remaining drug content in the MAB-LA patch was 15% higher than that of the pure MAB patch after storage for 12 months at room temperature, which was visualized by Raman imaging. The interaction between MAB-LA and AAOH PSA via hydrogen bond decreased the diffusion rate and increased the drug stability further. This study successfully developed the MAB patch, which provided a reference for applying ion-pairing strategies to improve the stability of transdermal patches.
Collapse
Affiliation(s)
- Liuyang Wang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Yu Pang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Qi Zheng
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Jiuheng Ruan
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Liang Fang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Chao Liu
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| |
Collapse
|
4
|
Ding D, Liu C, Zhang Y, Xu W, Cai Y, Zhong T, Fang L. Mechanistic insights of different release behaviors dominated by drug physicochemical properties in polyisobutylene pressure sensitive adhesive. Int J Pharm 2022; 630:122416. [PMID: 36450335 DOI: 10.1016/j.ijpharm.2022.122416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/24/2022] [Accepted: 11/14/2022] [Indexed: 11/29/2022]
Abstract
The purpose of this study was to investigate the effect of the physicochemical parameters of drugs on their own release behaviors in polyisobutylene pressure sensitive adhesive (PIB PSA), which provided a theoretical guidance for the application of PIB in transdermal drug delivery system (TDDS). Seven drugs with different physicochemical parameters including clonidine (CLO), flurbiprofen (FLU), diclofenac (DIC), ibuprofen (IBU), zolmitriptan (ZOL), lidocaine (LID), tulobuterol (TUL) and the mixed adhesive (7:3, w/w) of Oppanol® B 15 N (M.W. = 108,000 Da) and Oppanol® N 50 (M.W. = 565,000 Da) were selected for in vitro drug release and skin permeation studies. Regression analysis was used to study the relationship between physicochemical parameters and release behaviors. The release behaviors of drugs were a negative correlation with polarizability and dipole moment per molecular volume (μ/V), which represented van der Waals and dipole-dipole interaction, respectively. Fourier transform infrared spectroscopy (FT-IR), modulated temperature differential scanning calorimetry (MDSC) and molecular dynamics simulation were used to provide molecular details of the interaction between the drug and PIB. The free volume and molecular mobility of PIB were characterized using mechanical property tests, rheology study, MDSC and molecular dynamics simulation. Based on the above results, drugs with high polarizability and μ/V had stronger van der Waals and dipole-dipole interaction with PIB, reducing the free volume and molecular mobility of PIB, so that the drug struggled to release from PIB. In addition, the diffusion activation energy of the drug was calculated by using the variable temperature release study to characterize the ease of drug release from the kinetic aspect. And the trends of in vitro drug release and skin penetration profiles were basically similar. Thus, it was thought that the physicochemical parameters of the drug played a vital role in the drug release behavior of PIB PSAs and would affect the skin penetration process, which provided a reference for the design and application of patches based on PIB PSAs in TDDS.
Collapse
Affiliation(s)
- Dawei Ding
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Chao Liu
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Yang Zhang
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Wenwen Xu
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Yu Cai
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Ting Zhong
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Liang Fang
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China.
| |
Collapse
|
5
|
Liang Y, Duan M, Yi W, Zhang T, Wang Y, Wu Z, Tang H. Ion-pair compounds of diacerein for enhancing skin permeability in vitro: the compatibility-permeability relationship of counter ion and diacerein. Drug Deliv 2022; 29:499-505. [PMID: 35147054 PMCID: PMC8843160 DOI: 10.1080/10717544.2022.2032877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
This research aimed to investigate how the relationship between counter ion and diacerein (DCN) exerts an effect on the skin penetration of DCN ion-pair compounds. After the ion-pair compounds were formed by DCN and organic amines with different functional groups, the hydrogen bond of these compounds was confirmed by Fourier-transform infrared (FTIR) spectroscopy and molecular docking. The skin of porcine ears was employed to conduct the in vitro skin penetration, DCN - triethanolamine was the most potential candidate with the Q24h of 7.89 ± 0.38 µg/cm2 among organic amines with different functional groups. Whereas among the homologous fatty amine, the most permeable compound was DCN - lauryl amine with the Q24h of 11.28 ± 0.48 µg/cm2. Molecular simulation was employed to explore the relationship between counter ion and DCN. It was revealed by the bind energy curve that DCN had the strongest compatibility with triethanolamine among organic amines and laurylamine (N12) among fatty amines. It was amazingly found that the in vitro permeation fluxes of DCN ion-pair compounds would increase with enhancing the compatibility of counter ion and DCN. These findings broadened our understanding of how the relationship between drug and counter ion affects the skin penetration of ion-pair compounds.
Collapse
Affiliation(s)
- Yan Liang
- Department of Pharmacy, School of Chemistry, Xiangtan University, Xiangtan, China
| | - Manzhen Duan
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Wei Yi
- Department of Pharmacy, School of Chemistry, Xiangtan University, Xiangtan, China
| | - Teng Zhang
- Department of Pharmacy, School of Chemistry, Xiangtan University, Xiangtan, China
| | - Yonggang Wang
- Department of Pharmacy, School of Chemistry, Xiangtan University, Xiangtan, China
| | - Zhiming Wu
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Huaibo Tang
- Department of Pharmacy, School of Chemistry, Xiangtan University, Xiangtan, China
| |
Collapse
|
6
|
Ion-Pair Compounds of Strychnine for Enhancing Skin Permeability: Influencing the Transdermal Processes In Vitro Based on Molecular Simulation. Pharmaceuticals (Basel) 2021; 15:ph15010034. [PMID: 35056091 PMCID: PMC8781250 DOI: 10.3390/ph15010034] [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: 10/14/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 11/17/2022] Open
Abstract
This research aimed to explore how Strychnine (Str) ion-pair compounds affect the in vitro transdermal process. In order to prevent the influence of different functional groups on skin permeation, seven homologous fatty acids were selected to form ion-pair compounds with Str. The in vitro permeation fluxes of the Str ion-pair compounds were 2.2 to 8.4 times that of Str, and Str-C10 had the highest permeation fluxes of 42.79 ± 19.86 µg/cm2/h. The hydrogen bond of the Str ion-pair compounds was also confirmed by Fourier Transform Infrared (FTIR) Spectroscopy, Nuclear Magnetic Resonance (NMR) Spectroscopy and molecular simulation. In the process of molecular simulation, the intercellular lipid and the viable skin were represented by ceramide, cholesterol and free fatty acid of equal molar ratios and water, respectively. It was found by the binding energy curve that the Str ion-pair compounds had better compatibility with the intercellular lipid and water than Str, which indicated that the affinity of Str ion-pair compounds and skin was better than that of Str and skin. Therefore, it was concluded that Str ion-pair compounds can be distributed from the vehicle to the intercellular lipid and viable skin more easily than Str. These findings broadened our knowledge about how Str ion-pair compounds affect the transdermal process.
Collapse
|
7
|
Delivery of ionizable hydrophilic drugs based on pharmaceutical formulation of ion pairs and ionic liquids. Eur J Pharm Biopharm 2020; 156:203-218. [DOI: 10.1016/j.ejpb.2020.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022]
|
8
|
Liu J, Guan J, Wan X, Shang R, Shi X, Fang L, Liu C. The Improved Cargo Loading and Physical Stability of Ibuprofen Orodispersible Film: Molecular Mechanism of Ion-Pair Complexes on Drug-Polymer Miscibility. J Pharm Sci 2020; 109:1356-1364. [DOI: 10.1016/j.xphs.2019.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 10/25/2022]
|
9
|
Yang D, Li W, Fang L, Liu C. Investigation of Controlled Release Molecular Mechanism of Oil Phase in Spilanthol Emulsion: Development and In Vitro, In Vivo Characterization. AAPS PharmSciTech 2019; 20:227. [PMID: 31222590 DOI: 10.1208/s12249-019-1454-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 06/12/2019] [Indexed: 11/30/2022] Open
Abstract
The aim of the present study was to develop a spilanthol emulsion and investigate the effect of oil and drug physicochemical properties on drug release and skin retention at molecular level. Formulation factors including oil, emulsifier, and humectant were investigated by in vitro skin retention/permeation study and the optimized formulation was evaluated in vitro and in vivo. In addition, the controlled release effect of oil was characterized using drug emulsion distribution study, drug release study, FT-IR, and molecular modeling. The optimized emulsion (squalane as oil phase) obtained the maximum skin retention (118.71 ± 10.30 μg/g), which significantly restored skin hydroxyproline content (23.99 ± 2.21 μg/g), compared with the positive group (14.75 ± 1.84 μg/g) and the negative group (15.55 ± 2.03 μg/g). It was caused by high drug release of squalene and good drug-skin miscibility. FT-IR and molecular modeling showed that spilanthol (SPI) interacted with squalene through Van der Waals force, which was weaker than a hydrogen bond formed with other oils, thus exhibited good drug release properties. And the released drug was stored in the skin due to good drug-skin miscibility, which was proved by miscibility calculation and molecular modeling. In conclusion, an effective emulsion was developed and the controlled release effect of oil phase was proved through drug-excipient interaction.
Collapse
|
10
|
Ren T, Lin X, Zhang Q, You D, Liu X, Tao X, Gou J, Zhang Y, Yin T, He H, Tang X. Encapsulation of Azithromycin Ion Pair in Liposome for Enhancing Ocular Delivery and Therapeutic Efficacy on Dry Eye. Mol Pharm 2018; 15:4862-4871. [DOI: 10.1021/acs.molpharmaceut.8b00516] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Shen M, Liu C, Wan X, Farah N, Fang L. Development of a daphnetin transdermal patch using chemical enhancer strategy: insights of the enhancement effect of Transcutol P and the assessment of pharmacodynamics. Drug Dev Ind Pharm 2018; 44:1642-1649. [DOI: 10.1080/03639045.2018.1483391] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Meiyue Shen
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Chao Liu
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Xiaocao Wan
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | | | - Liang Fang
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| |
Collapse
|
12
|
Yang D, Wan X, Quan P, Liu C, Fang L. The role of carboxyl group of pressure sensitive adhesive in controlled release of propranolol in transdermal patch: Quantitative determination of ionic interaction and molecular mechanism characterization. Eur J Pharm Sci 2018; 115:330-338. [DOI: 10.1016/j.ejps.2018.01.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/22/2018] [Accepted: 01/22/2018] [Indexed: 01/01/2023]
|
13
|
Ion-pair formation combined with a penetration enhancer as a dual strategy to improve the transdermal delivery of meloxicam. Drug Deliv Transl Res 2017; 8:64-72. [DOI: 10.1007/s13346-017-0434-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
14
|
Zhao H, Liu C, Quan P, Wan X, Shen M, Fang L. Mechanism study on ion-pair complexes controlling skin permeability: Effect of ion-pair dissociation in the viable epidermis on transdermal permeation of bisoprolol. Int J Pharm 2017; 532:29-36. [DOI: 10.1016/j.ijpharm.2017.08.080] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/28/2017] [Accepted: 08/14/2017] [Indexed: 10/19/2022]
|
15
|
Wang W, Song T, Wan X, Liu C, Zhao H, Fang L. Investigate the control release effect of ion-pair in the development of escitalopram transdermal patch using FT-IR spectroscopy, molecular modeling and thermal analysis. Int J Pharm 2017; 529:391-400. [DOI: 10.1016/j.ijpharm.2017.06.089] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/13/2017] [Accepted: 06/29/2017] [Indexed: 02/06/2023]
|
16
|
Liu C, Hui M, Quan P, Fang L. Drug in adhesive patch of palonosetron: Effect of pressure sensitive adhesive on drug skin permeation and in vitro-in vivo correlation. Int J Pharm 2016; 511:1088-97. [DOI: 10.1016/j.ijpharm.2016.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/25/2016] [Accepted: 08/08/2016] [Indexed: 10/21/2022]
|
17
|
Siafaka PI, Barmbalexis P, Bikiaris DN. Novel electrospun nanofibrous matrices prepared from poly(lactic acid)/poly(butylene adipate) blends for controlled release formulations of an anti-rheumatoid agent. Eur J Pharm Sci 2016; 88:12-25. [PMID: 27039136 DOI: 10.1016/j.ejps.2016.03.021] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/20/2016] [Accepted: 03/22/2016] [Indexed: 11/19/2022]
Abstract
In the present work, a series of novel formulations consisting of poly(lactic acid)/poly(butylene adipate) (PLA/PBAd) electrospun blends was examined as controlled release matrices for Leflunomide's active metabolite, Teriflunomide (TFL). The mixtures were prepared using different ratios of PLA and PBAd in order to produce nanofibrous matrices with different characteristics. Miscibility studies of the blended polymeric fibers were performed through differential scanning calorimetry (DSC) and X-ray diffractometry (XRD). Hydrolytic degradation in the prepared fibers was evaluated at 37°C using a phosphate buffered saline solution. Different concentrations of (TFL) (5, 10, 15wt.%) were incorporated into nanofibers for examining the drug release behavior in simulated body fluids (SBF), at 37°C. The drug-loaded nanofibrous formulations were further characterized by Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, DSC and XRD. Gel permeation chromatography (GPC) analysis was used to evaluate the mechanism of TFL release. Artificial neural networks (ANN) and multi-linear-regression (MLR) models were used to evaluate the effect of % content of PBAd (X1) and TFL (X2) on an initial burst effect and a dissolution behavior. It was found that PLA/PBAd nanofibers have different diameters depending on the ratio of used polyesters and added drug. TFL was incorporated in an amorphous form inside the polymeric nanofibers. In vitro release studies reveal that a drug release behavior is correlated with the size of the nanofibers, drug loading and matrix degradation after a specific time. ANN dissolution modeling showed increased correlation efficacy compared to MLR.
Collapse
Affiliation(s)
- Panoraia I Siafaka
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124, Macedonia, Greece
| | - Panagiotis Barmbalexis
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124, Macedonia, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124, Macedonia, Greece.
| |
Collapse
|
18
|
Geng S, Liu X, Xu H, Cai C, Zhang Y, Yao Q, Xu H, Gou J, Yin T, Xiao W, Tang X. Clarithromycin ion pair in a liposomal membrane to improve its stability and reduce its irritation caused by intravenous administration. Expert Opin Drug Deliv 2015; 13:337-48. [DOI: 10.1517/17425247.2016.1123247] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
19
|
Cui H, Quan P, Zhao H, Wen X, Song W, Xiao Y, Zhao Y, Fang L. Mechanism of Ion-Pair Strategy in Modulating Skin Permeability of Zaltoprofen: Insight from Molecular-Level Resolution Based on Molecular Modeling and Confocal Laser Scanning Microscopy. J Pharm Sci 2015; 104:3395-403. [DOI: 10.1002/jps.24543] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/04/2015] [Accepted: 05/18/2015] [Indexed: 11/11/2022]
|
20
|
Liu N, Zhang Y, Cun D, Quan P, Fang L. Effect of backing films on the transdermal delivery of donepezil from patches. AAPS PharmSciTech 2014; 15:1569-73. [PMID: 25134467 PMCID: PMC4245418 DOI: 10.1208/s12249-014-0190-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/29/2014] [Indexed: 11/30/2022] Open
Abstract
The aim of this work was to investigate the effect of backing films on transdermal delivery of donepezil (DP) from patches. Three backing films, Cotran™ 9700, Cotran™ 9701, and Cotran™ 9726 were chosen as backing layers to prepare transdermal patches containing DP. The transdermal penetration and release amount of DP from each patch were evaluated by rabbit abdominal skin in vitro. The partitioning experiments and attentuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy were performed to confirm the existence of interaction between backing films and DP. Results showed that the cumulative release amount of DP from patches with different backing films had the same order of cumulative amount penetrated, i.e. Cotran™ 9701 < Cotran™ 9700 < Cotran™ 9726, which demonstrated that the permeation of DP was mainly limited by release behavior. Partitioning experiments and ATR-FTIR study indicated that Cotran™ 9700 and Cotran™ 9701 had interaction with DP by H bond formation which decreased the release of drug from the patches. By contrast, Cotran™ 9726 could provide the highest flux of skin permeation of DP, because such interaction between them was not found. Moreover, the parameters of backing films were found to have relation to skin hydration, thus affecting the penetration behavior of DP from patches. In conclusion, the effect of backing films on the flux of DP permeation could be attributed to both the interaction of backing films and the changes of skin hydration. Backing films could be a key factor in formulation screening of DP patches.
Collapse
Affiliation(s)
- Nannan Liu
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016 China
| | - Yaqiong Zhang
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016 China
| | - Dongmei Cun
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016 China
| | - Peng Quan
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016 China
| | - Liang Fang
- Department of Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016 China
| |
Collapse
|
21
|
Hui M, Quan P, Yang Y, Fang L. The effect of ion-pair formation combined with penetration enhancers on the skin permeation of loxoprofen. Drug Deliv 2014; 23:1550-7. [PMID: 25386739 DOI: 10.3109/10717544.2014.981768] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Loxoprofen (LOXO) is a non-steroidal anti-inflammatory drug. Repeated oral administrations induce gastrointestinal side effects. Patches are a promising alternative. OBJECTIVE The aim of this study was to investigate the effects of organic amines on the skin permeation of LOXO and finally design a patch with a comparable permeation profile and pharmacodynamic effects to the commercial LOXONA® plaster. MATERIALS AND METHODS The effects of organic amines were assessed by flux values of LOXO from isopropyl myristate (IPM), using horizontal diffusion cell and rabbit skin. FTIR spectroscopy was used to confirm ion-pair formation. Anti-inflammatory and analgesic activity assessments were performed in the adjuvant arthritis rat model and acetic acid-induced writhing syndrome in mouse, separately. RESULTS AND DISCUSSION Results showed that triethylamine (TEA) was the most potential candidate in IPM, with the highest flux of 499.75 ± 32.40 µg/cm(2)/h. In patch, the highest flux of 369.37 ± 34.32 µg/cm(2)/h was still obtained by LOXO-TEA. Combined with penetration enhancers, the cumulative amounts were further increased in presence of 5% IPM, which exhibited a flux of 840.04 ± 66.38 µg/cm(2)/h as two times of the commercial one. Ultimately, anti-inflammatory and analgesic activity assessment presented that a comparable pharmacodynamic activity with the commercial one could be obtained by the patch we designed. Additionally, we also found that LOXO patch applied topically exerted a systemic effect, and the effect was dose-dependent. CONCLUSION It was feasible for LOXO patch design by combination of ion-pair technology and chemical enhancers.
Collapse
Affiliation(s)
- Mei Hui
- a Department of Pharmaceutics , Shenyang Pharmaceutical University , Shenyang , People's Republic of China
| | - Peng Quan
- a Department of Pharmaceutics , Shenyang Pharmaceutical University , Shenyang , People's Republic of China
| | - Yingying Yang
- a Department of Pharmaceutics , Shenyang Pharmaceutical University , Shenyang , People's Republic of China
| | - Liang Fang
- a Department of Pharmaceutics , Shenyang Pharmaceutical University , Shenyang , People's Republic of China
| |
Collapse
|
22
|
Intra-articular drug delivery from an optimized topical patch containing teriflunomide and lornoxicam for rheumatoid arthritis treatment: Does the topical patch really enhance a local treatment? J Control Release 2013; 169:73-81. [DOI: 10.1016/j.jconrel.2013.03.028] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 03/05/2013] [Accepted: 03/17/2013] [Indexed: 01/29/2023]
|