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Pena AM, Chen X, Pence IJ, Bornschlögl T, Jeong S, Grégoire S, Luengo GS, Hallegot P, Obeidy P, Feizpour A, Chan KF, Evans CL. Imaging and quantifying drug delivery in skin - Part 2: Fluorescence andvibrational spectroscopic imaging methods. Adv Drug Deliv Rev 2020; 153:147-168. [PMID: 32217069 PMCID: PMC7483684 DOI: 10.1016/j.addr.2020.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 01/31/2023]
Abstract
Understanding the delivery and diffusion of topically-applied drugs on human skin is of paramount importance in both pharmaceutical and cosmetics research. This information is critical in early stages of drug development and allows the identification of the most promising ingredients delivered at optimal concentrations to their target skin compartments. Different skin imaging methods, invasive and non-invasive, are available to characterize and quantify the spatiotemporal distribution of a drug within ex vivo and in vivo human skin. The first part of this review detailed invasive imaging methods (autoradiography, MALDI and SIMS). This second part reviews non-invasive imaging methods that can be applied in vivo: i) fluorescence (conventional, confocal, and multiphoton) and second harmonic generation microscopies and ii) vibrational spectroscopic imaging methods (infrared, confocal Raman, and coherent Raman scattering microscopies). Finally, a flow chart for the selection of imaging methods is presented to guide human skin ex vivo and in vivo drug delivery studies.
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Affiliation(s)
- Ana-Maria Pena
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Xueqin Chen
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Isaac J Pence
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Thomas Bornschlögl
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Sinyoung Jeong
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Sébastien Grégoire
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France.
| | - Gustavo S Luengo
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Philippe Hallegot
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Peyman Obeidy
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Amin Feizpour
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Kin F Chan
- Simpson Interventions, Inc., Woodside, CA 94062, United States of America
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America.
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Mitragotri S. Engineering approaches to transdermal drug delivery: a tribute to contributions of prof. Robert Langer. Skin Pharmacol Physiol 2013; 26:263-76. [PMID: 23921113 DOI: 10.1159/000351947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 04/08/2013] [Indexed: 11/19/2022]
Abstract
Transdermal drug delivery continues to provide an advantageous route of drug administration over injections. While the number of drugs delivered by passive transdermal patches has increased over the years, no macromolecule is currently delivered by the transdermal route. Substantial research efforts have been dedicated by a large number of researchers representing varied disciplines including biology, chemistry, pharmaceutics and engineering to understand, model and overcome the skin's barrier properties. This article focuses on engineering contributions to the field of transdermal drug delivery. The article pays tribute to Prof. Robert Langer, who pioneered the engineering approach towards transdermal drug delivery. Over a period spanning nearly 25 years since his first publication in the field of transdermal drug delivery, Bob Langer has deeply impacted the field by quantitative analysis and innovative engineering. At the same time, he has inspired several generations of engineers by collaborations and mentorship. His scientific insights, innovative technologies, translational efforts and dedicated mentorship have transformed the field.
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Affiliation(s)
- S Mitragotri
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA.
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3
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Grzybowski A, Pietrzak K. Maria Goeppert-Mayer (1906–1972): Two-photon effect on dermatology. Clin Dermatol 2013; 31:221-5. [DOI: 10.1016/j.clindermatol.2012.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Chen L, Han L, Lian G. Recent advances in predicting skin permeability of hydrophilic solutes. Adv Drug Deliv Rev 2013; 65:295-305. [PMID: 22580335 DOI: 10.1016/j.addr.2012.05.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 05/02/2012] [Accepted: 05/02/2012] [Indexed: 11/24/2022]
Abstract
Understanding the permeation of hydrophilic molecules is of relevance to many applications including transdermal drug delivery, skin care as well as risk assessment of occupational, environmental, or consumer exposure. This paper reviews recent advances in modeling skin permeability of hydrophilic solutes, including quantitative structure-permeability relationships (QSPR) and mechanistic models. A dataset of measured human skin permeability of hydrophilic and low hydrophobic solutes has been compiled. Generally statistically derived QSPR models under-estimate skin permeability of hydrophilic solutes. On the other hand, including additional aqueous pathway is necessary for mechanistic models to improve the prediction of skin permeability of hydrophilic solutes, especially for highly hydrophilic solutes. A consensus yet has to be reached as to how the aqueous pathway should be modeled. Nevertheless it is shown that the contribution of aqueous pathway can constitute to more than 95% of the overall skin permeability. Finally, future prospects and needs in improving the prediction of skin permeability of hydrophilic solutes are discussed.
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Polat BE, Lin S, Mendenhall JD, VanVeller B, Langer R, Blankschtein D. Experimental and molecular dynamics investigation into the amphiphilic nature of sulforhodamine B. J Phys Chem B 2011; 115:1394-402. [PMID: 21222449 PMCID: PMC3037431 DOI: 10.1021/jp109866q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sulforhodamine B (SRB), a common fluorescent dye, is often considered to be a purely hydrophilic molecule, having no impact on bulk or interfacial properties of aqueous solutions. This assumption is due to the high water solubility of SRB relative to most fluorescent probes. However, in the present study, we demonstrate that SRB is in fact an amphiphile, with the ability to adsorb at an air/water interface and to incorporate into sodium dodecyl sulfate (SDS) micelles. In fact, SRB reduces the surface tension of water by up to 23 mN/m, and the addition of SRB to an aqueous SDS solution induces a significant decrease in the cmc of SDS. Molecular dynamics simulations were conducted to gain a deeper understanding of these findings. The simulations revealed that SRB has defined polar "head" and nonpolar "tail" regions when adsorbed at the air/water interface as a monomer. In contrast, when incorporated into SDS micelles, only the sulfonate groups were found to be highly hydrated, suggesting that the majority of the SRB molecule penetrates into the micelle. To illustrate the implications of the amphiphilic nature of SRB, an interesting case study involving the effect of SRB on ultrasound-mediated transdermal drug delivery is presented.
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Affiliation(s)
- Baris E. Polat
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Shangchao Lin
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jonathan D. Mendenhall
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Brett VanVeller
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel Blankschtein
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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6
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Reiner JE, Jahn A, Stavis SM, Culbertson MJ, Vreeland WN, Burden DL, Geist J, Gaitan M. Accurate Optical Analysis of Single-Molecule Entrapment in Nanoscale Vesicles. Anal Chem 2009; 82:180-8. [DOI: 10.1021/ac901698v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Joseph E. Reiner
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Andreas Jahn
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Samuel M. Stavis
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Michael J. Culbertson
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Wyatt N. Vreeland
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Daniel L. Burden
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Jon Geist
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
| | - Michael Gaitan
- Electronics and Electrical Engineering Laboratory, Semiconductor Electronics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, Department of Chemistry, Wheaton College, Wheaton, Illinois 60187-5593, and Chemical Science and Technology Laboratory, Biotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8313
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7
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Abstract
Recent advances in the use of nonlinear optical microscopy (NLOM) in skin microscopy are presented. Nonresonant spectroscopies including second harmonic generation, coherent anti-Stokes Raman and two-photon absorption are described and applications to problems in skin biology are detailed. These nonlinear techniques have several advantages over traditional microscopy methods that rely on one-photon excitation: intrinsic 3D imaging with <1 microm spatial resolution, decreased photodamage to tissue samples and penetration depths up to 1,000 microm with the use of near-infrared lasers. Thanks to these advantages, nonlinear optical spectroscopy has become a powerful tool to study the physical and biochemical properties of the skin. Structural information can be obtained using the response of endogenous chemical species in the skin, such as collagen or lipids, indicating that optical biopsy may replace current invasive, time-consuming traditional histology methods. Insertion of specific probe molecules into the skin provides the opportunity to monitor specific biochemical processes such as skin transport, molecular penetration, barrier homeostasis and ultraviolet radiation-induced reactive oxygen species generation. While the field is quite new, it seems likely that the use of NLOM to probe structure and biochemistry of live skin samples will only continue to grow.
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Affiliation(s)
- Kerry M Hanson
- Department of Chemistry, University of California at Riverside, Riverside, CA, USA
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8
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Hansen S, Naegel A, Heisig M, Wittum G, Neumann D, Kostka KH, Meiers P, Lehr CM, Schaefer UF. The Role of Corneocytes in Skin Transport Revised—A Combined Computational and Experimental Approach. Pharm Res 2009; 26:1379-97. [DOI: 10.1007/s11095-009-9849-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Accepted: 02/06/2009] [Indexed: 10/21/2022]
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Bird DK, Schneider AL, Watkinson AC, Finnin B, Smith TA. Navigating transdermal diffusion with multiphoton fluorescence lifetime imaging. J Microsc 2008; 230:61-9. [PMID: 18387040 DOI: 10.1111/j.1365-2818.2008.01955.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate the potential of fluorescence lifetime imaging by time-correlated single-photon counting as a method for monitoring the transdermal diffusion pathway and diffusion rate of pharmaceuticals in human skin. The current application relies on observing subtle changes in the fluorescence lifetime of the intrinsic fluorophores present in the intracellular region between corneocytes of the stratum corneum. We have comprehensively characterized the measured fluorescence lifetimes from intracorneocyte junctions in three skin section types (dermatomed skin, epidermal membranes and stratum corneum) revealing statistically significant differences of the short lifetime component between each of the types, which we attribute to the sample preparation and imaging method. We show using epidermal membrane sections that application of a drug/solvent formulation consisting of ethinyl estradiol and spectroscopic grade ethanol to the surface gives rise to a slight but statistically significant shortening of the fluorescence lifetime of the long-lived emitting species present in the sample, from approximately 2.8 ns to 2.5 ns. The method may be useful for future studies where the kinetics and pathways of a variety of applied formulations could be investigated.
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Affiliation(s)
- D K Bird
- Ultrafast and Microspectroscopy Laboratories, School of Chemistry, The University of Melbourne, Victoria 3010, Australia.
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10
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Dunn KW, Sutton TA. Functional studies in living animals using multiphoton microscopy. ILAR J 2008; 49:66-77. [PMID: 18172334 DOI: 10.1093/ilar.49.1.66] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
In vivo microscopy is a powerful method for studying fundamental issues of physiology and pathophysiology. The recent development of multiphoton fluorescence microscopy has extended the reach of in vivo microscopy, supporting high-resolution imaging deep into the tissues and organs of living animals. As compared with other in vivo imaging techniques, multiphoton microscopy is uniquely capable of providing a window into cellular and subcellular processes in the context of the intact, functioning animal. In addition, the ability to collect multiple colors of fluorescence from the same sample makes in vivo microscopy uniquely capable of characterizing up to three parameters from the same volume, supporting powerful correlative analyses. Since its invention in 1990, multiphoton microscopy has been increasingly applied to numerous areas of medical investigation, providing invaluable insights into cell physiology and pathology. However, researchers have only begun to realize the true potential of this powerful technology as it has proliferated beyond the laboratories of a relatively few pioneers. In this article we present an overview of the advantages and limitations of multiphoton microscopy as applied to in vivo imaging. We also review specific examples of the application of in vivo multiphoton microscopy to studies of physiology and pathology in a variety of organs including the brain, skin, skeletal muscle, tumors, immune cells, and visceral organs.
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Affiliation(s)
- Kenneth William Dunn
- Department of Medicine, Division of Nephrology, Indiana University Medical Center, Indianapolis, IN 46202-5116, USA.
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11
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Kushner J, Kim D, So PTC, Blankschtein D, Langer RS. Dual-Channel Two-Photon Microscopy Study of Transdermal Transport in Skin Treated with Low-Frequency Ultrasound and a Chemical Enhancer. J Invest Dermatol 2007; 127:2832-46. [PMID: 17554365 DOI: 10.1038/sj.jid.5700908] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Visualization of transdermal permeant pathways is necessary to substantiate model-based conclusions drawn using permeability data. The aim of this investigation was to visualize the transdermal delivery of sulforhodamine B (SRB), a fluorescent hydrophilic permeant, and of rhodamine B hexyl ester (RBHE), a fluorescent hydrophobic permeant, using dual-channel two-photon microscopy (TPM) to better understand the transport pathways and the mechanisms of enhancement in skin treated with low-frequency ultrasound (US) and/or a chemical enhancer (sodium lauryl sulfate--SLS) relative to untreated skin (the control). The results demonstrate that (1) both SRB and RBHE penetrate beyond the stratum corneum and into the viable epidermis only in discrete regions (localized transport regions--LTRs) of US treated and of US/SLS-treated skin, (2) a chemical enhancer is required in the coupling medium during US treatment to obtain two significant levels of increased penetration of SRB and RBHE in US-treated skin relative to untreated skin, and (3) transcellular pathways are present in the LTRs of US treated and of US/SLS-treated skin for SRB and RBHE, and in SLS-treated skin for SRB. In summary, the skin is greatly perturbed in the LTRs of US treated and US/SLS-treated skin with chemical enhancers playing a significant role in US-mediated transdermal drug delivery.
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Affiliation(s)
- Joseph Kushner
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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12
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Ricard C, Vial JC, Douady J, van der Sanden B. In vivo imaging of elastic fibers using sulforhodamine B. JOURNAL OF BIOMEDICAL OPTICS 2007; 12:064017. [PMID: 18163833 DOI: 10.1117/1.2821421] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Until now, the imaging of elastic fibers was restricted to tissue sections using the endofluorescence properties of elastin or histological dyes. Methods to study their morphology in vivo and in situ have been lacking. We present and characterize a new application of a fluorescent dye for two-photon microscopy: sulforhodamine B (SRB), which is shown to specifically stain elastic fibers in vivo. SRB staining of elastic fibers is demonstrated to be better than using elastin endofluorescence for two-photon microscopy. Our imaging method of elastic fibers is shown to be suitable for simultaneous imaging with both other fluorescent intravital dyes and second-harmonic generation (SHG). We illustrate these findings with intravital imaging of elastic and collagen fibers in muscle epimysium and endomysium and in blood vessel walls. We expect SRB staining to become a key method to study elastic fibers in vivo.
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Affiliation(s)
- Clément Ricard
- INSERM, U836, Grenoble Institut des Neurosciences, Grenoble, F-38042 France.
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13
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Wang A, Seki T, Yuan D, Saso Y, Hosoya O, Chono S, Morimoto K. Effect of camellia oil on the permeation of flurbiprofen and diclofenac sodium through rat and pig skin. Biol Pharm Bull 2005; 27:1476-9. [PMID: 15340244 DOI: 10.1248/bpb.27.1476] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of camellia oil on the permeation of flurbiprofen (FP) and diclofenac sodium (DFS), used as model drugs, through rat and pig skin was examined. Two different types of camellia oil were used: one of them was purified by distillation and the other was purified by filtration without heating. The distilled camellia oil (DCO) and the filtered camellia oil (FCO) were applied to the skin as a pretreatment. Permeation of FP through the skins pretreated with FCO and DCO was enhanced, while that of DFS was suppressed. The effects of FCO were greater than those of DCO as far as enhancement and suppression were concerned. The effect of FCO on FP permeation could be due to oleic acid, one of the major components of FCO. On the other hand, FCO and oleic acid had opposite effects on the penetration of DFS. This result suggests that other active components which suppress the permeation of DFS may be present in FCO. Since the penetration-suppressing agents will be useful for skin care products, studies of such agents will be important in the future.
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Affiliation(s)
- Aiping Wang
- Hokkaido College of Pharmacy, 7-1 Katsuraoka-cho, Otaru, Hokkaido 047-0264, Japan
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14
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Abstract
Historically, developments in transdermal drug delivery have been incremental, focusing on overcoming problems associated with the barrier properties of the skin, reducing skin irritation rates and improving the aesthetics associated with passive patch systems. More-recent advances have concentrated on the development of non-passive systems to aid delivery of larger drug molecules, such as proteins and nucleotides, as the trend for discovering and designing biopharmaceuticals continues. Fundamentally, improvements in transdermal delivery will remain incremental until there is wider acceptance of this route of administration within the pharmaceutical industry. Only then will the transdermal revolution live up to its true potential.
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Affiliation(s)
- Beverley J Thomas
- Acrux Limited, 103-113 Stanley Street, West Melbourne, Victoria 3003, Australia
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