Skip to main content

Abstract

Drug penetration and permeation through the skin are greatly influenced by the structural properties of the skin and the physicochemical properties of the drug. As such, penetration enhancement techniques largely focus on manipulating these two key factors. A great deal of research has focused on the stratum corneum, the primary skin barrier. In this chapter, we describe the structural properties of human skin, its functions, and the basic principles of drug penetration. The lipid composition and structural organisation of the stratum corneum, as well as the pathways of drug permeation, are highlighted. This chapter should provide a basic understanding of these topics and prepare the reader for advanced discussions in the specialist chapters that follow.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

eBook
USD 16.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 119.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  • Agache P (2004a) Metrology of the stratum corneum. In: Agache P, Humbert P (eds) Measuring the skin: non-invasive investigations, physiology, normal constants. Springer, Berlin, pp 101–111

    Chapter  Google Scholar 

  • Agache P (2004b) The human skin: an overview. In: Agache P, Humbert P (eds) Measuring the skin: non-invasive investigations, physiology, normal constants. Springer, Berlin, pp 3–5

    Chapter  Google Scholar 

  • Bikle DD (2011) Vitamin D, metabolism and function in the skin. Mol Cell Endocrinol 347:80–89

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  • Bouwstra JA, Gooris GS (2010) The lipid organization in human stratum corneum and model systems. Open Derm J 4:10–13

    CAS  Google Scholar 

  • Bouwstra JA, Dubbelaar FE, Gooris GS, Ponec M (2000) The lipid organisation in the skin barrier. Acta Derm Venereol Suppl (Stockh) 208:23–30

    CAS  Google Scholar 

  • Bouwstra JA, Gooris GS, Dubbelaar FER, Ponec M (2001) Phase behavior of lipid mixtures based on human ceramides: coexistence of crystalline and liquid phases. J Lipid Res 42:1759–1770

    CAS  PubMed  Google Scholar 

  • Bouwstra JA, Gooris GS, Dubbelaar FE, Ponec M (2002) Phase behavior of stratum corneum lipid mixtures based on human ceramides: the role of natural and synthetic ceramide 1. J Invest Dermatol 118:606–617

    Article  CAS  PubMed  Google Scholar 

  • Bowser PA, Gray GM (1978) Sphingomyelinase in pig and human epidermis. J Invest Dermatol 70:331–335

    Article  CAS  PubMed  Google Scholar 

  • Breathnach AS, Goodman T, Stolinski C, Gross M (1973) Freeze-fracture replication of cells of stratum corneum of human epidermis. J Anat 114:65

    PubMed Central  CAS  PubMed  Google Scholar 

  • Elias PM (2012) Structure and function of the stratum corneum extracellular matrix. J Invest Dermatol 132:2131–2133

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  • Elias PM (1983) Epidermal lipids, barrier function, and desquamation. J Invest Dermatol 80(Suppl):44s–49s

    Article  CAS  Google Scholar 

  • Forslind B (1994) A domain mosaic model of the skin barrier. Acta Derm Venereol 74:1–6

    CAS  PubMed  Google Scholar 

  • Gentilhomme E, Neveux Y (2004) Epidermal physiology. In: Agache P, Humbert P (eds) Measuring the skin: non-invasive investigations, physiology, normal constants. Springer, Berlin, pp 165–172

    Chapter  Google Scholar 

  • Hill J (2003) Molecular models of the intercellular lipid lamellae from epidermal stratum corneum. Biochim Biophys Acta BBA – Biomembr 1616:121–126

    Article  CAS  Google Scholar 

  • Iwai I, Han H, den Hollander L, Svensson S, Öfverstedt L-G, Anwar J et al (2012) The human skin barrier is organized as stacked bilayers of fully extended ceramides with cholesterol molecules associated with the ceramide sphingoid moiety. J Invest Dermatol 132:2215–2225

    Article  CAS  PubMed  Google Scholar 

  • Kashibuchi N, Hirai Y, O’Goshi K, Tagami H (2002) Three-dimensional analyses of individual corneocytes with atomic force microscope: morphological changes related to age, location and to the pathologic skin conditions. Skin Res Technol 8:203–211

    Article  PubMed  Google Scholar 

  • Labouta HI, El-Khordagui LK, Kraus T, Schneider M (2011) Mechanism and determinants of nanoparticle penetration through human skin. Nanoscale 3:4989–4999

    Article  CAS  PubMed  Google Scholar 

  • Landmann L (1986) Epidermal permeability barrier: transformation of lamellar granule-disks into intercellular sheets by a membrane-fusion process, a freeze-fracture study. J Invest Dermatol 87:202–209

    Article  CAS  PubMed  Google Scholar 

  • Law S, Wertz PW, Swartzendruber DC, Squier CA (1995) Regional variation in content, composition and organization of porcine epithelial barrier lipids revealed by thin-layer chromatography and transmission electron microscopy. Arch Oral Biol 40:1085–1091

    Article  CAS  PubMed  Google Scholar 

  • Liu X, Grice JE, Lademann J, Otberg N, Trauer S, Patzelt A, Roberts MS (2011) Hair follicles contribute significantly to penetration through human skin only at times soon after application as a solvent deposited solid in man: hair follicles contribute to early human skin penetration. Br J Clin Pharmacol 72:768–774

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  • Madison KC, Swartzendruber DC, Wertz PW, Downing DT (1987) Presence of intact intercellular lipid lamellae in the upper layers of the stratum corneum. J Invest Dermatol 88:714–718

    Article  CAS  PubMed  Google Scholar 

  • Magnusson BM, Pugh WJ, Roberts MS (2004) Simple rules defining the potential of compounds for transdermal delivery or toxicity. Pharm Res 21:1047–1054

    Article  CAS  PubMed  Google Scholar 

  • Masukawa Y, Narita H, Shimizu E, Kondo N, Sugai Y, Oba T et al (2008) Characterization of overall ceramide species in human stratum corneum. J Lipid Res 49:1466–1476

    Article  CAS  PubMed  Google Scholar 

  • McGrath JA, Eady RAJ, Pope FM (2004) Anatomy and organization of human skin. In: Rook A, Burns T (eds) Rook’s textbook of dermatology, 7th edn. Blackwell Science, Malden

    Google Scholar 

  • McIntosh TJ (2003) Organization of skin stratum corneum extracellular lamellae: diffraction evidence for asymmetric distribution of cholesterol. Biophys J 85:1675–1681

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  • Michaels AS, Chandrasekaran SK, Shaw JE (1975) Drug permeation through human skin: theory and in vitro experimental measurement. AIChE J 21:985–996

    Article  CAS  Google Scholar 

  • Moss GP, Dearden JC, Patel H, Cronin MTD (2002) Quantitative structure–permeability relationships (QSPRs) for percutaneous absorption. Toxicol In Vitro 16:299–317

    Article  CAS  PubMed  Google Scholar 

  • Norlén L (2001a) Skin barrier formation: the membrane folding model. J Invest Dermatol 117:823–829

    Article  PubMed  Google Scholar 

  • Norlén L (2001b) Skin barrier structure and function: the single gel phase model. J Invest Dermatol 117:830–836

    Article  PubMed  Google Scholar 

  • Potts RO, Guy RH (1992) Predicting skin permeability. Pharm Res 9:663–669

    Article  CAS  PubMed  Google Scholar 

  • Romani N, Brunner PM, Stingl G (2012) Changing views of the role of Langerhans cells. J Invest Dermatol 132:872–881

    Article  CAS  PubMed  Google Scholar 

  • Saar BG, Contreras-Rojas LR, Xie XS, Guy RH (2011) Imaging drug delivery to skin with stimulated raman scattering microscopy. Mol Pharm 8:969–975

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  • Sato J, Denda M, Nakanishi J, Nomura J, Koyama J (1998) Cholesterol sulfate inhibits proteases that are involved in desquamation of stratum corneum. J Invest Dermatol 111:189–193

    Article  CAS  PubMed  Google Scholar 

  • Scheuplein RJ (1967) Mechanism of percutaneous absorption. II. Transient diffusion and the relative importance of various routes of skin penetration. J Invest Dermatol 48:79–88

    CAS  PubMed  Google Scholar 

  • Schröter A, Kessner D, Kiselev MA, Hauß T, Dante S, Neubert RHH (2009) Basic nanostructure of stratum corneum lipid matrices based on ceramides [EOS] and [AP]: a neutron diffraction study. Biophys J 97:1104–1114

    Article  PubMed Central  PubMed  Google Scholar 

  • Swartzendruber DC, Wertz PW, Kitko DJ, Madison KC, Downing DT (1989) Molecular models of the intercellular lipid lamellae in mammalian stratum corneum. J Invest Dermatol 92:251–257

    Article  CAS  PubMed  Google Scholar 

  • Sweeney TM, Downing DT (1970) The role of lipids in the epidermal barrier to water diffusion. J Invest Dermatol 55:135–140

    Article  CAS  PubMed  Google Scholar 

  • Takagi Y, Kriehuber E, Imokawa G, Elias PM, Holleran WM (1999) Beta-glucocerebrosidase activity in mammalian stratum corneum. J Lipid Res 40:861–869

    CAS  PubMed  Google Scholar 

  • Trauer S, Lademann J, Knorr F, Richter H, Liebsch M, Rozycki C et al (2010) Development of an in vitro modified skin absorption test for the investigation of the follicular penetration pathway of caffeine. Skin Pharmacol Physiol 23:320–327

    Article  CAS  PubMed  Google Scholar 

  • Williams A (2003) Transdermal and topical drug delivery from theory to clinical practice. Pharmaceutical Press, London

    Google Scholar 

  • Williams AC, Barry BW (2004) Penetration enhancers. Adv Drug Deliv Rev 56:603–618

    Article  CAS  PubMed  Google Scholar 

  • Zaba LC, Krueger JG, Lowes MA (2008) Resident and “inflammatory” dendritic cells in human skin. J Invest Dermatol 129:302–308

    Article  PubMed Central  PubMed  Google Scholar 

  • Zbytovská J, Kiselev MA, Funari SS, Garamus VM, Wartewig S, Palát K et al (2008) Influence of cholesterol on the structure of stratum corneum lipid model membrane. Colloids Surfaces Physicochem Eng Asp 328:90–99

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Keng Wooi Ng .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2015 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

Ng, K.W., Lau, W.M. (2015). Skin Deep: The Basics of Human Skin Structure and Drug Penetration. In: Dragicevic, N., Maibach, H. (eds) Percutaneous Penetration Enhancers Chemical Methods in Penetration Enhancement. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-45013-0_1

Download citation

  • DOI: https://doi.org/10.1007/978-3-662-45013-0_1

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-45012-3

  • Online ISBN: 978-3-662-45013-0

  • eBook Packages: MedicineMedicine (R0)

Publish with us

Policies and ethics