Cited by 45Skin Protection and AgingHair Growth and DisordersSkin and Cellular Biology Research

UVB Irradiation Stimulates Deposition of New Elastic Fibers by Modified Epithelial Cells Surrounding the Hair Follicles and Sebaceous Glands in Mice

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Starcher, Barry, Pierce, Richard, Hinek, Aleksander·1999·Journal of Investigative Dermatology

Abstract

UVB irradiation stimulates the synthesis of elastin in the skin of humans and experimental animals. In this study we localized the site and the cells that are responsible for the synthesis of murine dermal elastic fibers. SKH-1 hairless mice were irradiated with UVB and the skin removed for light microscopy, electron microscopy, in situ hybridization, immunohistochemistry, and biochemical studies. In response to chronic low doses of UVB there was an initial moderate increase in tropoelastin mRNA in the papillary dermis. By contrast, there was a continuous marked elevation of collagen alpha1(I) message localizing to sites of inflammatory cell influx throughout the upper and lower dermis. After 25 wk of UV irradiation there was a 2-fold increase in skin elastin, yet total collagen remained unchanged. Serial desmosine analysis from en face sections indicated the increase in elastin content was due to dermal elastic fibers, an increase in the size and number of the dermal cysts, and an increase in subpanniculus elastic fibers. Elastin stains of en face sections suggested that the elastic fibers in the upper dermis were exclusively derived from cells lining the epithelial root sheath and sebaceous glands. In response to UV irradiation, the elastic fibers increased in number and size, wrapping around these structures and aligning in both directions as long fibers parallel to the body axis. Electron micrographs indicated that modified epithelial cells in close proximity to the flattened epithelial cells that encircled the root sheath and sebaceous glands were the source of the elastic fibers.

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Crossref · 10.1046/j.1523-1747.1999.00553.x

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  • Aged skin is clinically characterized by loss of hydration, rough texture, irregular pigmentation, yellowish colour, telangiectasia, deep wrinkles or furrows, dermal thinning and fine lines.

    “Clinically, aged skin is characterized by a loss of hydration, rough texture, irregular pigmentation, yellowish colour, telangiectasia, deep wrinkles or furrows, dermal thinning and fine lines [17, 21 -23].”

    From Elastin structure and its involvement in skin photoageing (2017) · cites this paper as [21]

    The paper’s introductory passage says that cutaneous aging and UVB exposure alter skin appearance, but it does not describe the clinical features listed in the claim. Searches for hydration, pigmentation, telangiectasia, wrinkles, and thinning found no passage establishing that list; the study focuses on UVB-induced changes in mouse skin. Page numbers are unavailable in our copy. (LLM, conf=0.72)

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Research works printed but not linked: 1

  1. Davidson JM, Zang M, Zoia O, Giro MG: Regulation of elastin synthesis in pathological. In: Robert L (ed.). Ciba Foundation Symposium 192: The Molecular Biology and Pathology of Elastic Tissues. Chichester: Wiley, 1995, pp. 81-99

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Authors
Starcher, B., Pierce, R., & Hinek, A.
Affiliations
  • The University of Texas Health Science Center at Tyler (US)
  • University of Toronto (CA)
Corresponding author
Starcher, Barry
Venue
Journal of Investigative Dermatology
Publisher
Elsevier BV
Published
1999-04
Volume
112
Issue
4
Pages
450-455
ISSN
0022-202X (ISSN-L)
OpenAlex
W1976552166
Cited by
45
References
25
Citations by year
2024: 2 · 2022: 2 · 2021: 1 · 2016: 1 · 2015: 5 · 2013: 3 · 2012: 3
FWCI
3.10
Type
journal article
Language
en
Open access
Locations
  • Journal of Investigative Dermatology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Health Sciences › Medicine › Urology › Hair Growth and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
Keywords
UVB irradiation, elastin synthesis, dermal cysts, sebaceous glands, hair follicle, SKH-1 mice, desmosine, skin inflammation
MeSH terms
Animals, Collagen, Elastin, Epithelial Cells, Mice, Hairless, Sebaceous Glands, Tropoelastin, Ultraviolet Rays, Hair Follicle, Mice

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