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Implications of changes in physical state of drugs in poly(lactide-co-glycolide) matrices upon exposure to moisture and release medium. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Zhang Y, Liu C, Wang J, Ren S, Song Y, Quan P, Fang L. Ionic liquids in transdermal drug delivery system: Current applications and future perspectives. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Miyazaki T, Aso Y, Goda Y. [Detection and Analysis of Drug Crystals in Medical Transdermal Patches by Using X-ray Diffraction Measurement]. YAKUGAKU ZASSHI 2021; 142:65-74. [PMID: 34645768 DOI: 10.1248/yakushi.21-00160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The crystallization of active pharmaceutical ingredients (APIs) in matrix-type transdermal patches has implications for the rate of drug absorption through the skin and patch adhesion strength. Therefore, the presence or absence and the degree of API crystallinity must be controlled to guarantee the quality of patches. In this study, the utility of laboratory-level X-ray diffractometers for the detection and analysis of crystalline APIs in transdermal patches was investigated using medical patches of tulobuterol and isosorbide dinitrate. Several matrix-type patches employ a controlled drug delivery system containing intentionally crystallized API. Both benchtop and high-resolution laboratory X-ray diffractometers can detect several characteristic peaks of the APIs in these patches even if the patches are wrapped in an outer bag, although a benchtop model provides peak heights one-seventh to one-fifth that of a high-resolution instrument. An isosorbide dinitrate patch containing an unintentionally crystallized spot was wrapped in an outer bag, followed by measurements using both X-ray diffractometers. For both instruments, several isosorbide dinitrate-derived peaks were detected only at the crystallized spot, although the signal-to-noise ratio was poorer for the benchtop model. These results show that a high-resolution X-ray diffractometer is advantageous for high-detection sensitivity and offers a high degree of freedom of the measurement position on the sample. It was concluded that a laboratory-level high-resolution X-ray diffractometer can be used to examine the crystalline state of APIs in patches inside an unopened outer bag.
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Affiliation(s)
| | - Yukio Aso
- National Institute of Health Sciences
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Use of simulated vaginal and menstrual fluids to model in vivo discolouration of silicone elastomer vaginal rings. INTERNATIONAL JOURNAL OF PHARMACEUTICS-X 2021; 3:100081. [PMID: 34027386 PMCID: PMC8120934 DOI: 10.1016/j.ijpx.2021.100081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 01/13/2023]
Abstract
Vaginal rings releasing antiretrovirals – either alone or in combination with contraceptive progestins – are being developed for prevention of human immunodeficiency virus (HIV) transmission via vaginal sex. Following Phase I trials, significant discolouration was observed on the surface of investigational silicone elastomer antiretroviral-contraceptive matrix-type vaginal rings containing either 25 mg dapivirine or 200 mg dapivirine plus levonorgestrel. In this study, potential causes of the discolouration have been assessed in vitro using simulated vaginal and menstrual fluids (SVF and SMF, respectively) to model in vivo exposure. The fluid compositions also included hydrogen peroxide (H2O2), hydrogen peroxide plus a copper intrauterine device (IUD), or synthetic dyes (representing personal care and household cleaning products). No discolouration was observed for rings exposed to SVF + hydrogen peroxide (with or without an IUD). However, the SVF + dye compositions showed significant ring discolouration, with staining patterns similar to those observed with rings that had been exposed to highly-coloured personal care and household cleaning products during clinical trial use. Exposure of rings to SMF compositions invariably caused yellow surface discolouration, dark spotting and markings, similar to the staining patterns observed following clinical use. The darker marks on the ring surface were identified as blood debris derived from the SMF. The study indicates that surface discolouration of rings in vivo can be attributed to exposure to menstrual fluid or highly coloured personal care or household cleaning products. Discolouration of the rings was not associated with any specific safety risks for the user, though severe discolouration could potentially impact acceptability and adherence.
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Burnett CL, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Gill LJ, Heldreth B. Safety Assessment of Polyene Group as Used in Cosmetics. Int J Toxicol 2020; 39:59S-90S. [PMID: 32975153 DOI: 10.1177/1091581820952385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) reviewed the safety of polyenes, which are reported to function in cosmetics primarily as film formers and viscosity increasing agents. The Panel reviewed relevant data related to these ingredients, not inggaps in the available safety data for some of the polyenes in this safety assessment. The data available for many of the ingredients are sufficient and can be extrapolated to support the safety of the entire group because of the similarities in the chemical structures, chemical properties, use concentrations, and reported functions across the group. The Panel concluded that polyenes were safe in cosmetics in the present practices of use and concentration described in this safety assessment.
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Tsoka M, Oikonomou P, Papadokostaki KG, Sanopoulou M. Properties of Polydimethylsiloxane Modified by Blending with Polyvinylpyrrolidone and a Poly(ethylene oxide)-Poly(propylene oxide) Triblock Copolymer. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Tsoka
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Petros Oikonomou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Kyriaki G. Papadokostaki
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Merope Sanopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
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Long J, Etxeberria AE, Kornelsen C, Nand AV, Ray S, Bunt CR, Seyfoddin A. Development of a Long-Term Drug Delivery System with Levonorgestrel-Loaded Chitosan Microspheres Embedded in Poly(vinyl alcohol) Hydrogel. ACS APPLIED BIO MATERIALS 2019; 2:2766-2779. [DOI: 10.1021/acsabm.9b00190] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingjunjiao Long
- Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
| | - Alaitz Etxabide Etxeberria
- Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
- Department of Chemical and Environmental Engineering, Engineering College of Gipuzkoa, BIOMAT Research Group, University of the Basque Country (UPV/EHU), Donostia-San Sebastian 48080, Spain
| | - Caroline Kornelsen
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Ashveen V. Nand
- Health and Community, and Environmental and Animal Sciences Network, Unitec Institute of Technology, Auckland 1142, New Zealand
| | - Sudip Ray
- MBIE Biocide Toolbox and NZProduct Accelerator Programmes, School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Craig R. Bunt
- Department of Agricultural Sciences, Faculty of Agriculture and Life Sciences, Lincoln University, Canterbury 7647, New Zealand
| | - Ali Seyfoddin
- Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
- School of Interprofessional Health Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand
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Effect on in-vitro release of individual and dual contraceptive drug loading from gelatin electrospun fibers. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.03.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Li WZ, Han WX, Hao XL, Zhao N, Zhai XF, Yang LB, He SM, Cheng YC, Zhang H, Fu LN, Zhang Y, Liang Z. An Optimized and Feasible Preparation Technique for the Industrial Production of Hydrogel Patches. AAPS PharmSciTech 2018; 19:1072-1083. [PMID: 29147871 DOI: 10.1208/s12249-017-0914-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/24/2017] [Indexed: 11/30/2022] Open
Abstract
For hydrogel patches, the laboratory tests could not fully reveal the existing problems of full scale of industrial production, and there are few studies about the preparation technique for the industrial manufacturing process of hydrogel patches. So, the purpose of this work was to elucidate the effects of mainly technological operation and its parameters on the performance of hydrogel patches at the industrial-scale production. The results revealed the following: (1) the aqueous phase was obtained by polyvinylpyrrolidone (PVP) along with tartaric acid dissolved in purified water, then feeding this into a vacuum mixer as a whole in one batch, thus extended the crosslinking reaction time of hydrogel paste (matrix) and allowed the operation of coating/cutting-off to be carried out easily, and there was no permeation of backing layer; (2) the gel strength of the hydrogel patches increased with the increase of working temperature, however, once the temperature exceeded 35 ± 2 °C, the hydrogel paste would lose water severely and the resultant physical crosslinking structure which has lower gel/cohesive strength would easily bring gelatinization/residues during application; (3) the relative humidity (RH) of the standing-workshop was dynamically controlled (namely at 35 ± 2 °C, keeping the RH at 55 ± 5% for 4 days, then 65 ± 5% for 2 days), which would make patches with satisfactory characteristics such as better flexibility, higher adhesive force, smooth flat matrix surface, and without gelatinization/residues and warped edge during the using process; (4) the aging of the packaged hydrogel patches was very sensitive to storage temperature, higher temperature, higher gel strength and lower adhesiveness. The storage temperature of 10 ± 2 °C could effectively prevent matrix aging and adhesion losing, which would also facilitate the expiration date of patches extended obviously. In conclusion, this work provides an optimized and feasible preparation technique for the industrial production of the hydrogel patches and establishes the hydrogel patches as a novel carrier for transdermal drug delivery.
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Innovative polymeric system (IPS) for solvent-free lipophilic drug transdermal delivery via dissolving microneedles. J Control Release 2016; 223:118-125. [DOI: 10.1016/j.jconrel.2015.12.038] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 12/15/2015] [Accepted: 12/23/2015] [Indexed: 12/16/2022]
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Kim TS, Jin SE, Sun B, Kim MS, Hwang SJ. Comparison of adhesion and dissolution of fentanyl patches: Fentadur® and Durogesic DTrans®. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2015. [DOI: 10.1007/s40005-015-0195-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sachdeva V, Bai Y, Kydonieus A, Banga AK. Formulation and optimization of desogestrel transdermal contraceptive patch using crystallization studies. Int J Pharm 2013; 441:9-18. [DOI: 10.1016/j.ijpharm.2012.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 12/05/2012] [Accepted: 12/12/2012] [Indexed: 10/27/2022]
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Jain P, Banga AK. Induction and inhibition of crystallization in drug-in-adhesive-type transdermal patches. Pharm Res 2012; 30:562-71. [PMID: 23093376 DOI: 10.1007/s11095-012-0901-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 10/08/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE To screen crystallization inhibitors, perform accelerated stability testing and predict saturation solubility of levonorgestrel in drug-in-adhesive patches. METHODS Differential scanning calorimetry (DSC) studies were compared against slide crystallization studies for screening additives. Release studies were performed from crystallized and supersaturated patches. Die cutting was used for accelerated stability testing of patches. Time lag experiments were performed to predict saturation solubility of levonorgestrel in acrylate adhesive, DuroTak-2516. RESULTS DSC studies indicated poloxamer to be the best additive whereas slide crystallization studies showed polyvinylpyrrolidone to be better. Supersaturated patches showed higher release profiles relative to crystallized patches. Crystals were observed in crystallized patches even after 96 h of release studies. Die-cutting of patches helped in development of crystals in less time as compared to uncut sheets indicating its usefulness in accelerated stability testing. Saturation solubility of levonorgestrel in DuroTak-2516 was predicted to be 0.09% w/w which was in close agreement with value of 0.1% w/w from solubility calculator on vendor's website. CONCLUSIONS Crystallization was shown to have negative impact on drug release and patch performance. Slide crystallization studies, die cutting and time lag experiments can be used as tools to help stabilize the otherwise unstable patches.
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Affiliation(s)
- Piyush Jain
- Department of Pharmaceutical Sciences College of Pharmacy & Health Sciences, Mercer University, Atlanta, Georgia 30341, USA
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Yun J, Lee DH, Im JS, Kim HI. Improvement in transdermal drug delivery performance by graphite oxide/temperature-responsive hydrogel composites with micro heater. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 32:1564-70. [DOI: 10.1016/j.msec.2012.04.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 02/29/2012] [Accepted: 04/22/2012] [Indexed: 10/28/2022]
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