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Li H, Peng Z, Song Y, Dou M, Lu X, Li M, Zhai X, Gu Y, Mamujiang R, Du S, Bai J. Study of the permeation-promoting effect and mechanism of solid microneedles on different properties of drugs. Drug Deliv 2023; 30:2165737. [PMID: 36644816 PMCID: PMC9943250 DOI: 10.1080/10717544.2023.2165737] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
In transdermal drug delivery systems, the physicochemical properties of the drug affect its percutaneous permeability. However, whether the physicochemical properties of drugs change their transdermal permeability in the presence of pores in the presence of solid microneedles (MNs) has been less studied in this area. In this project, cinnamaldehyde, curcumin, ferulic acid and geniposide were selected as model drugs for the study of their transdermal permeability under the action of MNs, and a combination of classical experiments and visualization means such as scanning electron microscopy and laser confocal was used to investigate the permeation-promoting mechanism of MNs. The results showed that the MNs had significant permeation-promoting effects on different properties of drugs, with the permeation-promoting effects on cinnamaldehyde, curcumin, ferulic acid and geniposide being 6.36, 17.43, 29.54 and 8.91 times, respectively, and the permeation-promoting effects were more pronounced for lipid-soluble and amphiphilic drugs. Using scanning electron microscopy, transmission electron microscopy and other means to confirm that MNs can promote the penetration by acting on the skin to produce pores, and their effect on skin structure is greater than that of drugs. In addition, the existence of pores increases the amount of drug transdermal, which may enhance the diffusion of drug on the skin, and has no effect on lipid exchange and transdermal route. Through the research, it has been found that MNs is equivalent to direct peeling of the stratum corneum (SC), but it is simpler and safer for the patient.
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Affiliation(s)
- Huahua Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Ziwei Peng
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yang Song
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Minhang Dou
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Xinying Lu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Minghui Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaofeng Zhai
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yan Gu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Rexidanmu· Mamujiang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shouying Du
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jie Bai
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China,CONTACT Jie Bai School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Yangguang South Street, Fangshan District, Beijing, 102488, China
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2
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Pham QD, Biatry B, Grégoire S, Topgaard D, Sparr E. Solubility of Foreign Molecules in Stratum Corneum Brick and Mortar Structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2347-2357. [PMID: 36716111 PMCID: PMC9933541 DOI: 10.1021/acs.langmuir.2c03092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/12/2023] [Indexed: 06/18/2023]
Abstract
The barrier function of the skin is mainly assured by its outermost layer, stratum corneum (SC). One key aspect in predicting dermal drug delivery and in safety assessment of skin exposure to chemicals is the need to determine the amount of chemical that is taken up into the SC. We here present a strategy that allows for direct measures of the amount of various solid chemicals that can be dissolved in the SC in any environmental relative humidity (RH). A main advantage of the presented method is that it distinguishes between molecules that are dissolved within the SC and molecules that are not dissolved but might be present at, for example, the skin surface. In addition, the method allows for studies of uptake of hydrophobic chemicals without the need to use organic solvents. The strategy relies on the differences in the molecular properties of the added molecules in the dissolved and the excess states, employing detection methods that act as a dynamic filter to spot only one of the fractions, either the dissolved molecules or the excess solid molecules. By measuring the solubility in SC and delipidized SC at the same RHs, the same method can be used to estimate the distribution of the added chemical between the extracellular lipids and corneocytes at different hydration conditions. The solubility in porcine SC is shown to vary with hydration, which has implications for the molecular uptake and transport across the skin. The findings highlight the importance of assessing the chemical uptake at hydration conditions relevant to the specific applications. The methodology presented in this study can also be generalized to study the solubility and partitioning of chemicals in other heterogeneous materials with complex composition and structure.
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Affiliation(s)
- Quoc Dat Pham
- Division
of Physical Chemistry, Chemistry Department, Lund University, P.O. Box 124, 22100Lund, Sweden
- Gillette
Reading Innovation Centre, 460 Basingstoke Road, ReadingRG2 0QE, Berkshire, U.K.
| | - Bruno Biatry
- L’Oréal
Research & Innovation, 1, avenue Eugène Schueller, 93601Aulnay sous Bois, France
| | - Sébastien Grégoire
- L’Oréal
Research & Innovation, 1, avenue Eugène Schueller, 93601Aulnay sous Bois, France
| | - Daniel Topgaard
- Division
of Physical Chemistry, Chemistry Department, Lund University, P.O. Box 124, 22100Lund, Sweden
| | - Emma Sparr
- Division
of Physical Chemistry, Chemistry Department, Lund University, P.O. Box 124, 22100Lund, Sweden
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3
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Scott LN, Fiume M, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Heldreth B. Safety Assessment of Panthenol, Pantothenic Acid, and Derivatives as Used in Cosmetics. Int J Toxicol 2022; 41:77-128. [PMID: 36177798 DOI: 10.1177/10915818221124809] [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: 11/15/2022]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) assessed the safety of Panthenol, Pantothenic Acid, and 5 derivatives as used in cosmetics. These ingredients named in this report are reported to function in cosmetics as hair conditioning agents, and Panthenol also is reported to function as a skin-conditioning agent-humectant and a solvent. The Panel reviewed relevant data for these ingredients, and concluded that these 7 ingredients are safe in cosmetics in the present practices of use concentration described in this safety assessment.
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Affiliation(s)
- Laura N Scott
- Former Cosmetic Ingredient Review Scientific Analyst/Writer
| | | | | | | | - Ronald A Hill
- Former Expert Panel for Cosmetic Ingredient Safety Member
| | | | | | - James G Marks
- Former Expert Panel for Cosmetic Ingredient Safety Member
| | - Ronald C Shank
- Former Expert Panel for Cosmetic Ingredient Safety Member
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4
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Zakir F, Ahmad A, Mirza MA, Kohli K, Ahmad FJ. Exploration of a transdermal nanoemulgel as an alternative therapy for postmenopausal osteoporosis. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Alsheddi L, Ananthapadmanabhan K, Li SK. Influence of skin furrows on tape stripping in characterizing the depth of skin penetration. Int J Pharm 2020; 576:118903. [PMID: 31809856 DOI: 10.1016/j.ijpharm.2019.118903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/10/2019] [Accepted: 11/23/2019] [Indexed: 11/19/2022]
Abstract
The stratum corneum (SC), the outermost layer of the skin and its major barrier for penetration, contains furrows of different depths on its surface. The presence of these furrows might lead to erroneous interpretation of the results in skin permeation studies using tape stripping, in which the material trapped in the furrows removed by the tapes representing different layers of the SC might be interpreted as material penetrating within these layers. The present objective was to investigate the effect of skin furrows on tape stripping results. Non-penetrating fluorescent materials were topically applied to split-thickness human and full-thickness porcine skin samples. Tape stripping was applied, and the tapes were assessed by fluorescence microscopy and quantitative analyses. The microscopy images were assessed visually to determine the presence of the applied material in the furrows. The penetration depth of the material was examined and the fluorescence content and pattern in each tape were analyzed. The results suggested that skin furrows could be important in the first 10 tapes, affecting the quantification of materials in the SC, particularly in permeation studies of materials with low penetration into the SC. Depending on the properties of the materials, skin rinsing could reduce the impact of furrows.
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Affiliation(s)
- Lama Alsheddi
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA.
| | - Kavssery Ananthapadmanabhan
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - S Kevin Li
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
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6
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Barbero AM, Frasch HF. Effect of stratum corneum heterogeneity, anisotropy, asymmetry and follicular pathway on transdermal penetration. J Control Release 2017; 260:234-246. [PMID: 28596104 DOI: 10.1016/j.jconrel.2017.05.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 05/18/2017] [Accepted: 05/30/2017] [Indexed: 01/19/2023]
Abstract
The impact of the complex structure of the stratum corneum on transdermal penetration is not yet fully described by existing models. A quantitative and thorough study of skin permeation is essential for chemical exposure assessment and transdermal delivery of drugs. The objective of this study is to analyze the effects of heterogeneity, anisotropy, asymmetry, follicular diffusion, and location of the main barrier of diffusion on percutaneous permeation. In the current study, the solution of the transient diffusion through a two-dimensional-anisotropic brick-and-mortar geometry of the stratum corneum is obtained using the commercial finite element program COMSOL Multiphysics. First, analytical solutions of an equivalent multilayer geometry are used to determine whether the lipids or corneocytes constitute the main permeation barrier. Also these analytical solutions are applied for validations of the finite element solutions. Three illustrative compounds are analyzed in these sections: diethyl phthalate, caffeine and nicotine. Then, asymmetry with depth and follicular diffusion are studied using caffeine as an illustrative compound. The following findings are drawn from this study: the main permeation barrier is located in the lipid layers; the flux and lag time of diffusion through a brick-and-mortar geometry are almost identical to the values corresponding to a multilayer geometry; the flux and lag time are affected when the lipid transbilayer diffusivity or the partition coefficients vary with depth, but are not affected by depth-dependent corneocyte diffusivity; and the follicular contribution has significance for low transbilayer lipid diffusivity, especially when flux between the follicle and the surrounding stratum corneum is involved. This study demonstrates that the diffusion is primarily transcellular and the main barrier is located in the lipid layers.
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Affiliation(s)
- Ana M Barbero
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, USA.
| | - H Frederick Frasch
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, USA
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7
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Toropova AP, Toropov AA. The index of ideality of correlation: A criterion of predictability of QSAR models for skin permeability? THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:466-472. [PMID: 28196626 DOI: 10.1016/j.scitotenv.2017.01.198] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 06/06/2023]
Abstract
New criterion of the predictive potential of quantitative structure-property/activity relationships (QSPRs/QSARs) is suggested. This criterion is calculated with utilization of the correlation coefficient between experimental and calculated values of endpoint for the calibration set, with taking into account the positive and negative dispersions between experimental and calculated values. The utilization of this criterion improves the predictive potential of QSAR models of dermal permeability coefficient, logKp (cm/h).
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Affiliation(s)
- Alla P Toropova
- IRCCS, Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156 Milan, Italy.
| | - Andrey A Toropov
- IRCCS, Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156 Milan, Italy
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8
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Zhang X, Yu Y, Gu Y, Li X, Zhang X, Yu Y. In vitro determination of transdermal permeation of synthetic musks and estimated dermal uptake through usage of personal care products. CHEMOSPHERE 2017; 173:417-424. [PMID: 28129620 DOI: 10.1016/j.chemosphere.2017.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/23/2016] [Accepted: 01/01/2017] [Indexed: 06/06/2023]
Abstract
Synthetic musks, chemical constituents of personal care products, enter the human body through dermal contact. Elucidation of the mechanisms underlying transdermal permeation of synthetic musks should enhance our understanding of their uptake and distribution in human skin and allow accurate evaluation of associated human exposure. Here, the transdermal permeation dynamics and distribution of galaxolide (HHCB) and tonalide (AHTN) were investigated using an in vitro skin diffusion model. The transdermal permeation amounts of HHCB and AHTN increased rapidly during the first 6 h. The applied HHCB and AHTN amounts did not affect percutaneous absorption rates. HHCB and AHTN remained primarily in the stratum corneum, accounting for 70.0% and 70.3% of the totals during the 24-h period, respectively. The percutaneous absorption rate of both chemicals was ∼11%. HHCB, AHTN, musk ketone, musk xylene, and Musk-T were detected in 29 personal care products. The average total concentrations of the musks were 3990, 54.0, 17.7, and 9.8 μg g-1 in perfume, shampoo, lotion, and shower gel, respectively. Among the four product categories, HHCB was dominant (57.4%-99.6%), followed by AHTN. The data clearly indicate that polycyclic and nitro musks are most commonly used in personal care products. The total estimated dermal intake (51.6 μg kg-1bw day-1) was markedly higher than total dermal uptake (5.9 μg kg-1bw day-1) when percutaneous absorption rates of the chemicals were added into the calculation. Uptake of HHCB and AHTN via dermal contact of personal care products was significantly higher than that from dust inhalation calculated according to earlier literature data.
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Affiliation(s)
- Xiaolan Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yuling Yu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yue Gu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Xiaojing Li
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Xinyu Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yingxin Yu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.
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