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Tang B, Xie X, Lu J, Huang W, Yang J, Tian J, Lei L. Designing biomaterials for the treatment of autoimmune diseases. APPLIED MATERIALS TODAY 2024; 39:102278. [DOI: 10.1016/j.apmt.2024.102278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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Matos BN, Lima AL, Cardoso CO, Cunha-Filho M, Gratieri T, Gelfuso GM. Follicle-Targeted Delivery of Betamethasone and Minoxidil Co-Entrapped in Polymeric and Lipid Nanoparticles for Topical Alopecia Areata Treatment. Pharmaceuticals (Basel) 2023; 16:1322. [PMID: 37765130 PMCID: PMC10534685 DOI: 10.3390/ph16091322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/07/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Alopecia areata is managed with oral corticosteroids, which has known side effects for patients. Given that a topical application of formulations containing a corticoid and a substance controlling hair loss progression could reduce or eliminate such adverse effects and increase the patient's adherence to the treatment, this study prepares polymeric and lipidic nanoparticles (PNPs and NLCs) to co-entrap minoxidil and betamethasone and compares the follicular drug delivery provided by topical application of these nanoparticles. The prepared PNPs loaded 99.1 ± 13.0% minoxidil and 70.2 ± 12.8% betamethasone, while the NLCs entrapped 99.4 ± 0.1 minoxidil and 80.7 ± 0.1% betamethasone. PNPs and NLCs presented diameters in the same range, varying from 414 ± 10 nm to 567 ± 30 nm. The thermal analysis revealed that the production conditions favor the solubilization of the drugs in the nanoparticles, preserving their stability. In in vitro permeation studies with porcine skin, PNPs provided a 2.6-fold increase in minoxidil penetration into the follicular casts compared to the control and no remarkable difference in terms of betamethasone; in contrast, NLCs provided a significant (specifically, a tenfold) increase in minoxidil penetration into the hair follicles compared to the control, and they delivered higher concentrations of betamethasone in hair follicles than both PNPs and the control. Neither PNPs nor NLCs promoted transdermal permeation of the drugs to the receptor solution, which should favor a topical therapy. Furthermore, both nanoparticles targeted approximately 50% of minoxidil delivery to the follicular casts and NLCs targeted 74% of betamethasone delivery to the hair follicles. In conclusion, PNPs and NLCs are promising drug delivery systems for enhancing follicular targeting of drugs, but NLCs showed superior performance for lipophilic drugs.
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Affiliation(s)
- Breno N. Matos
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
| | - Ana Luiza Lima
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
| | - Camila O. Cardoso
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
| | - Marcilio Cunha-Filho
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
| | - Tais Gratieri
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
| | - Guilherme M. Gelfuso
- Laboratory of Food, Drugs, and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, DF, Brazil; (B.N.M.); (A.L.L.); (C.O.C.); (M.C.-F.); (T.G.)
- School of Heath Sciences, Campus Universitário Darcy Ribeiro, s/n, Brasilia 70910-900, DF, Brazil
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Darvin ME. Optical Methods for Non-Invasive Determination of Skin Penetration: Current Trends, Advances, Possibilities, Prospects, and Translation into In Vivo Human Studies. Pharmaceutics 2023; 15:2272. [PMID: 37765241 PMCID: PMC10538180 DOI: 10.3390/pharmaceutics15092272] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/19/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
Information on the penetration depth, pathways, metabolization, storage of vehicles, active pharmaceutical ingredients (APIs), and functional cosmetic ingredients (FCIs) of topically applied formulations or contaminants (substances) in skin is of great importance for understanding their interaction with skin targets, treatment efficacy, and risk assessment-a challenging task in dermatology, cosmetology, and pharmacy. Non-invasive methods for the qualitative and quantitative visualization of substances in skin in vivo are favored and limited to optical imaging and spectroscopic methods such as fluorescence/reflectance confocal laser scanning microscopy (CLSM); two-photon tomography (2PT) combined with autofluorescence (2PT-AF), fluorescence lifetime imaging (2PT-FLIM), second-harmonic generation (SHG), coherent anti-Stokes Raman scattering (CARS), and reflectance confocal microscopy (2PT-RCM); three-photon tomography (3PT); confocal Raman micro-spectroscopy (CRM); surface-enhanced Raman scattering (SERS) micro-spectroscopy; stimulated Raman scattering (SRS) microscopy; and optical coherence tomography (OCT). This review summarizes the state of the art in the use of the CLSM, 2PT, 3PT, CRM, SERS, SRS, and OCT optical methods to study skin penetration in vivo non-invasively (302 references). The advantages, limitations, possibilities, and prospects of the reviewed optical methods are comprehensively discussed. The ex vivo studies discussed are potentially translatable into in vivo measurements. The requirements for the optical properties of substances to determine their penetration into skin by certain methods are highlighted.
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Pereira MN, Nogueira LL, Cunha-Filho M, Gratieri T, Gelfuso GM. Methodologies to Evaluate the Hair Follicle-Targeted Drug Delivery Provided by Nanoparticles. Pharmaceutics 2023; 15:2002. [PMID: 37514188 PMCID: PMC10383440 DOI: 10.3390/pharmaceutics15072002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Nanotechnology has been investigated for treatments of hair follicle disorders mainly because of the natural accumulation of solid nanoparticles in the follicular openings following a topical application, which provides a drug "targeting effect". Despite the promising results regarding the therapeutic efficacy of topically applied nanoparticles, the literature has often presented controversial results regarding the targeting of hair follicle potential of nanoformulations. A closer look at the published works shows that study parameters such as the type of skin model, skin sections analyzed, employed controls, or even the extraction methodologies differ to a great extent among the studies, producing either unreliable results or precluding comparisons altogether. Hence, the present study proposes to review different skin models and methods for quantitative and qualitative analysis of follicular penetration of nano-entrapped drugs and their influence on the obtained results, as a way of providing more coherent study protocols for the intended application.
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Affiliation(s)
- Maíra N Pereira
- Laboratory of Food, Drug, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasilia 70910-900, DF, Brazil
| | - Luma L Nogueira
- Laboratory of Food, Drug, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasilia 70910-900, DF, Brazil
| | - Marcilio Cunha-Filho
- Laboratory of Food, Drug, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasilia 70910-900, DF, Brazil
| | - Tais Gratieri
- Laboratory of Food, Drug, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasilia 70910-900, DF, Brazil
| | - Guilherme M Gelfuso
- Laboratory of Food, Drug, and Cosmetics (LTMAC), School of Health Sciences, University of Brasilia, Brasilia 70910-900, DF, Brazil
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Zhang Y, Heinemann N, Rademacher F, Darvin ME, Raab C, Keck CM, Vollert H, Fluhr JW, Gläser R, Harder J, Meinke MC. Skin Care Product Rich in Antioxidants and Anti-Inflammatory Natural Compounds Reduces Itching and Inflammation in the Skin of Atopic Dermatitis Patients. Antioxidants (Basel) 2022; 11:antiox11061071. [PMID: 35739968 PMCID: PMC9219975 DOI: 10.3390/antiox11061071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 01/29/2023] Open
Abstract
The atopic dermatitis (AD) complex pathogenesis mechanism reveals marked changes of certain signaling factors as well as some morphological alterations in the epidermis. Reduced resilience against environmental factors and oxidative stress often makes the treatment with corticosteroids or tacrolismus ointments indispensable. In view of the correlation between oxidative stress and AD pathological factors, antioxidants can be incorporated into AD management strategies. This study investigates a curly kale, apple and green tea-containing natural extract rich in antioxidants for its effects on signaling inflammatory molecules and skin barrier enhancement in human epidermal keratinocytes- (NHEKs) based cell assays. Furthermore, the skin penetration on porcine ears was measured ex vivo using Raman micro spectroscopy. Finally, in a double-blind half-side, placebo-controlled clinical study, the effects of a formulation containing this extract were analyzed for the influence of lesion severity, epidermal barrier function, and pruritus in mild to moderately AD patients. Summarizing our results: The extract reduces expression of inflammatory cytokines in keratinocytes and increases barrier-related molecules. The verum formulation with a very high antioxidant capacity used in AD patients with mild to moderate lesions reduces itching, local SCORAD, and improves barrier function and the hydration of skin lesions.
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Affiliation(s)
- Yu Zhang
- Department of Dermatology, Venerology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (Y.Z.); (M.E.D.); (C.R.); (J.W.F.)
| | - Nina Heinemann
- Department of Dermatology, Medical Faculty, Christian-Albrecht University Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany; (N.H.); (F.R.); (R.G.); (J.H.)
| | - Franziska Rademacher
- Department of Dermatology, Medical Faculty, Christian-Albrecht University Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany; (N.H.); (F.R.); (R.G.); (J.H.)
| | - Maxim E. Darvin
- Department of Dermatology, Venerology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (Y.Z.); (M.E.D.); (C.R.); (J.W.F.)
| | - Christian Raab
- Department of Dermatology, Venerology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (Y.Z.); (M.E.D.); (C.R.); (J.W.F.)
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany;
| | - Cornelia M. Keck
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany;
| | | | - Joachim W. Fluhr
- Department of Dermatology, Venerology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (Y.Z.); (M.E.D.); (C.R.); (J.W.F.)
- Institute of Allergy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Regine Gläser
- Department of Dermatology, Medical Faculty, Christian-Albrecht University Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany; (N.H.); (F.R.); (R.G.); (J.H.)
| | - Jürgen Harder
- Department of Dermatology, Medical Faculty, Christian-Albrecht University Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany; (N.H.); (F.R.); (R.G.); (J.H.)
| | - Martina C. Meinke
- Department of Dermatology, Venerology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany; (Y.Z.); (M.E.D.); (C.R.); (J.W.F.)
- Correspondence: ; Tel.: +49-30-450-518244
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Friedman N, Merims S, Elia J, Benny O. Ex-vivo Skin Permeability Tests of Nanoparticles for Microscopy Imaging. Bio Protoc 2022; 12:e4375. [PMID: 35530520 PMCID: PMC9018434 DOI: 10.21769/bioprotoc.4375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 12/23/2021] [Accepted: 02/23/2022] [Indexed: 12/29/2022] Open
Abstract
Delivery of drugs through the skin is a major challenge in the field of drug delivery systems. Quantification of materials, and specifically nanoparticles, within the skin layers is essential for the development of advanced topical and transdermal delivery systems. We have developed a technique for ex-vivo segmentation and evaluation of human skin samples treated with fluorescent nanoparticles. The method is based on horizontal cryosections of skin samples, followed by confocal microscopy and image analysis. This protocol is relatively simple to perform with basic histological tools, thus it can serve for various dermatology assays.
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Affiliation(s)
- Nethanel Friedman
- The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Sharon Merims
- Sharet institute of oncology, Hadassah Ein-Karem hospital, Jerusalem, Israel
| | - Jhonatan Elia
- Department of plastic and aesthetic surgery, Hadassah Ein-Karem hospital, Jerusalem, Israel
| | - Ofra Benny
- The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel,*For correspondence:
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Chaturvedi S, Garg A. An insight of techniques for the assessment of permeation flux across the skin for optimization of topical and transdermal drug delivery systems. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102355] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Krombholz R, Lunter D. A New Method for In-Situ Skin Penetration Analysis by Confocal Raman Microscopy. Molecules 2020; 25:E4222. [PMID: 32942565 PMCID: PMC7571176 DOI: 10.3390/molecules25184222] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 12/25/2022] Open
Abstract
In the development of dermal drug formulations and cosmetics, understanding the penetration properties of the active ingredients is crucial. Given that widespread methods, including tape stripping, lack in spatial resolution, while being time- and labour-intensive, Confocal Raman Microscopy is a promising alternative. In optimizing topically applied formulations, or the development of generic formulations, comparative in-situ measurements have a huge potential of saving time and resources. In this work, we show our approach to in-situ skin penetration analysis by confocal Raman Microscopy. To analyse feasibility of the approach, we used caffeine solutions as model vehicles and tested the effectiveness of 1,2-pentanediol as a penetration enhancer for delivery to the skin.
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Affiliation(s)
| | - Dominique Lunter
- Department of Pharmaceutical Technology, Eberhard Karls University, Auf der Morgenstelle 8, 72076 Tuebingen, Germany;
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Gorzelanny C, Mess C, Schneider SW, Huck V, Brandner JM. Skin Barriers in Dermal Drug Delivery: Which Barriers Have to Be Overcome and How Can We Measure Them? Pharmaceutics 2020; 12:E684. [PMID: 32698388 PMCID: PMC7407329 DOI: 10.3390/pharmaceutics12070684] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 12/13/2022] Open
Abstract
Although, drugs are required in the various skin compartments such as viable epidermis, dermis, or hair follicles, to efficiently treat skin diseases, drug delivery into and across the skin is still challenging. An improved understanding of skin barrier physiology is mandatory to optimize drug penetration and permeation. The various barriers of the skin have to be known in detail, which means methods are needed to measure their functionality and outside-in or inside-out passage of molecules through the various barriers. In this review, we summarize our current knowledge about mechanical barriers, i.e., stratum corneum and tight junctions, in interfollicular epidermis, hair follicles and glands. Furthermore, we discuss the barrier properties of the basement membrane and dermal blood vessels. Barrier alterations found in skin of patients with atopic dermatitis are described. Finally, we critically compare the up-to-date applicability of several physical, biochemical and microscopic methods such as transepidermal water loss, impedance spectroscopy, Raman spectroscopy, immunohistochemical stainings, optical coherence microscopy and multiphoton microscopy to distinctly address the different barriers and to measure permeation through these barriers in vitro and in vivo.
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Affiliation(s)
| | | | | | | | - Johanna M. Brandner
- Department of Dermatology and Venerology, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (C.G.); (C.M.); (S.W.S.); (V.H.)
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10
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Nanocrystals for Improved Drug Delivery of Dexamethasone in Skin Investigated by EPR Spectroscopy. Pharmaceutics 2020; 12:pharmaceutics12050400. [PMID: 32349460 PMCID: PMC7284345 DOI: 10.3390/pharmaceutics12050400] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/16/2020] [Accepted: 04/24/2020] [Indexed: 01/29/2023] Open
Abstract
Nanocrystals represent an improvement over the traditional nanocarriers for dermal application, providing the advantages of 100% drug loading, a large surface area, increased adhesion, and the potential for hair follicle targeting. To investigate their advantage for drug delivery, compared to a base cream formulation, dexamethasone (Dx), a synthetic glucocorticoid frequently used for the treatment of inflammatory skin diseases, was covalently linked with the paramagnetic probe 3-(carboxy)-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (PCA) to DxPCA. To investigate the penetration efficiency between these two vehicles, electron paramagnetic resonance (EPR) spectroscopy was used, which allows the quantification of a spin-labeled drug in different skin layers and the monitoring of the drug release. The penetration behavior in excised healthy and barrier-disrupted porcine skin was monitored by EPR, and subsequently analyzed using a numerical diffusion model. As a result, diffusion constants and free energy values in the different layers of the skin were identified for both formulations. Dx-nanocrystals showed a significantly increased drug amount that penetrated into viable epidermis and dermis of intact (factor 3) and barrier-disrupted skin (factor 2.1) compared to the base cream formulation. Furthermore, the observed fast delivery of the spin-labeled drug into the skin (80% DxPCA within 30 min) and a successive release from the aggregate unit into the viable tissue makes these nanocrystals very attractive for clinical applications.
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Zhao J, Li Y, He D, Hu X, Li K, Yang Q, Fang C, Zhong C, Yang J, Tan Q, Zhang J. Natural Oral Anticancer Medication in Small Ethanol Nanosomes Coated with a Natural Alkaline Polysaccharide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:16159-16167. [PMID: 32186843 DOI: 10.1021/acsami.0c02788] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Oral medication is the most acceptable therapy to treat chronic diseases. Natural drugs and excipients have unique advantages, such as low cost and high safety. We first investigated modified ethanol nanosomes for tumor treatment via oral administration. We loaded curcumin (CM) into small ethanol nanosomes coated with the natural alkaline polysaccharide chitosan (CCSET) for increased absorption and bioavailability and enhanced efficacy against small cell lung cancer (SCLC). Compared to CM and noncoated ethanol nanosomes, CCSETs exhibited superior physicochemical, in vitro-in vivo kinetic, and absorptive properties and treatment efficacy at the cellular and animal levels. The interaction of CM and serum albumin (the quantitative binding force) was analyzed. The bioavailability of CCSET increased by 11.84-fold and the tumor growth inhibition rate increased markedly compared to CM. We first confirmed the effect of CM on SCLC stem cells, and CCSET greatly enhanced this action. We first reported that CM had an antitumor effect on SCLC at the animal level and that CCSET enhanced this effect. Natural alkaline polysaccharide-coated small ethanol nanosomes delivering natural medicine may be a potential oral anticancer strategy.
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Affiliation(s)
- Jing Zhao
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Yuan Li
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Dan He
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Xueyuan Hu
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Kailing Li
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Qiang Yang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Chunshu Fang
- Department of Thoracic Surgery, Daping Hospital of Army Medical University, PLA, Chongqing 400042, China
| | - Cailing Zhong
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Jie Yang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Qunyou Tan
- Department of Thoracic Surgery, Daping Hospital of Army Medical University, PLA, Chongqing 400042, China
| | - Jingqing Zhang
- Chongqing Research Center for Pharmaceutical Engineering, Chongqing Medical University, Chongqing 400016, China
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Abstract
Skin hydration is a complex process that influences the physical and mechanical properties of skin. Various technologies have emerged over the years to assess this parameter, with the current standard being electrical probe-based instruments. Nevertheless, their inability to provide detailed information has prompted the use of sophisticated spectroscopic and imaging methodologies, which are capable of in-depth skin analysis that includes structural and composition details. Modern imaging and spectroscopic techniques have transformed skin research in the dermatological and cosmetics disciplines, and are now commonly employed in conjunction with traditional methods for comprehensive assessment of both healthy and pathological skin. This article reviews current techniques employed in measuring skin hydration, and gives an account on their principle of operation and applications in skin-related research.
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13
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Successful ex-vivo probe-based confocal laser endomicroscopy of a superficial nonampullary duodenal epithelial tumor with dripping of food additives: a case of tubular adenocarcinoma. VideoGIE 2019; 4:128-130. [PMID: 30899892 PMCID: PMC6408706 DOI: 10.1016/j.vgie.2018.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Kurumi H, Nonaka K, Ryozawa S. Probe-based confocal laser endomicroscopy of the gastric mucosa with curcumin dripping. Dig Endosc 2018; 30:798-799. [PMID: 30107067 DOI: 10.1111/den.13258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hiroki Kurumi
- Department of Gastroenterology, Saitama Medical University International Medical Center, Hidaka-city, Japan
| | - Kouichi Nonaka
- Department of Gastroenterology, Saitama Medical University International Medical Center, Hidaka-city, Japan
| | - Shomei Ryozawa
- Department of Gastroenterology, Saitama Medical University International Medical Center, Hidaka-city, Japan
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15
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Giulbudagian M, Hönzke S, Bergueiro J, Işık D, Schumacher F, Saeidpour S, Lohan SB, Meinke MC, Teutloff C, Schäfer-Korting M, Yealland G, Kleuser B, Hedtrich S, Calderón M. Enhanced topical delivery of dexamethasone by β-cyclodextrin decorated thermoresponsive nanogels. NANOSCALE 2017; 10:469-479. [PMID: 29227500 DOI: 10.1039/c7nr04480a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly hydrophilic, responsive nanogels are attractive as potential systems for the topical delivery of bioactives encapsulated in their three-dimensional polymeric scaffold. Yet, these drug carrier systems suffer from drawbacks for efficient delivery of hydrophobic drugs. Addressing this, β-cyclodextrin (βCD) could be successfully introduced into the drug carrier systems by exploiting its unique affinity toward dexamethasone (DXM) as well as its role as topical penetration enhancer. The properties of βCD could be combined with those of thermoresponsive nanogels (tNGs) based on dendritic polyglycerol (dPG) as a crosslinker and linear thermoresponsive polyglycerol (tPG) inducing responsiveness to temperature changes. Electron paramagnetic resonance (EPR) studies localized the drug within the hydrophobic cavity of βCD by differences in its mobility and environmental polarity. In fact, the fabricated carriers combining a particulate delivery system with a conventional penetration enhancer, resulted in an efficient delivery of DXM to the epidermis and the dermis of human skin ex vivo (enhancement compared to commercial DXM cream: ∼2.5 fold in epidermis, ∼30 fold in dermis). Furthermore, DXM encapsulated in βCD tNGs applied to skin equivalents downregulated the expression of proinflammatory thymic stromal lymphopoietin (TSLP) and outperformed a commercially available DXM cream.
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Affiliation(s)
- M Giulbudagian
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustrasse 3, 14195 Berlin, Germany.
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Jager J, Obst K, Lohan SB, Viktorov J, Staufenbiel S, Renz H, Unbehauen M, Haag R, Hedtrich S, Teutloff C, Meinke MC, Danker K, Dommisch H. Characterization of hyperbranched core-multishell nanocarriers as an innovative drug delivery system for the application at the oral mucosa. J Periodontal Res 2017; 53:57-65. [PMID: 28898420 DOI: 10.1111/jre.12487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND OBJECTIVES In the oral cavity, the mucosal tissues may develop a number of different pathological conditions, such as inflammatory diseases (gingivitis, periodontitis) and autoimmune disorders (eg, oral lichen planus) that require therapy. The application of topical drugs is one common therapeutic approach. However, their efficacy is limited. Dilution effects due to saliva hinder the adherence and the penetration of drug formulations. Therefore, the bioavailability of oral topical drugs is insufficient, and patients may suffer from disease over years, if not life-long. MATERIAL AND METHODS In the present study, we characterized core-multishell (CMS) nanocarriers for their potential use as drug delivery systems at oral mucosal tissues. For this purpose, we prepared porcine masticatory as well as buccal mucosa and performed Franz cell diffusion experiments. Penetration of fluorescently labeled CMS nanocarriers into the mucosal tissue was analyzed using confocal laser scanning microscopy. Upon exposure to CMS nanocarriers, the metabolic and proliferative activity of gingival epithelial cells was determined by MTT and sulforhodamine B assays, respectively. RESULTS Here, we could show that the carriers penetrate into both mucosal tissues, while particles penetrate deeper into the masticatory mucosa. Electron paramagnetic resonance spectroscopy revealed that the 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy-labeled glucocorticoid dexamethasone loaded on to the CMS nanocarriers was released from the carriers in both mucosal tissues but with a higher efficiency in the buccal mucosa. The release from the nanocarriers is in both cases superior compared to the release from a conventional cream, which is normally used for the treatment of inflammatory conditions in the oral cavity. The CMS nanocarriers exhibited neither cytotoxic nor proliferative effects in vitro. CONCLUSION These findings suggested that CMS nanocarriers might be an innovative approach for topical drug delivery in the treatment of oral inflammatory diseases.
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Affiliation(s)
- J Jager
- Institute for Biochemistry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - K Obst
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Berlin, Germany
| | - S B Lohan
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - J Viktorov
- Department of Periodontology and Synoptic Dentistry, Charité - Medical University Berlin, Berlin, Germany
| | - S Staufenbiel
- Institute of Pharmacy, Pharmaceutical Technology, Freie Universität Berlin, Berlin, Germany
| | - H Renz
- Department of Craniofacial Developmental Biology, Charité - Medical University Berlin, Berlin, Germany
| | - M Unbehauen
- Institute for Organic Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - R Haag
- Institute for Organic Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - S Hedtrich
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Berlin, Germany
| | - C Teutloff
- Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - M C Meinke
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - K Danker
- Institute for Biochemistry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - H Dommisch
- Department of Periodontology and Synoptic Dentistry, Charité - Medical University Berlin, Berlin, Germany.,Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
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Naolou T, Rühl E, Lendlein A. Nanocarriers: Architecture, transport, and topical application of drugs for therapeutic use. Eur J Pharm Biopharm 2017; 116:1-3. [DOI: 10.1016/j.ejpb.2017.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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