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Hu L, Mauro TM, Dang E, Man G, Zhang J, Lee D, Wang G, Feingold KR, Elias PM, Man MQ. Epidermal Dysfunction Leads to an Age-Associated Increase in Levels of Serum Inflammatory Cytokines. J Invest Dermatol 2017; 137:1277-1285. [PMID: 28115059 PMCID: PMC5441930 DOI: 10.1016/j.jid.2017.01.007] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 12/21/2016] [Accepted: 01/04/2017] [Indexed: 01/21/2023]
Abstract
Even though elderly populations lack visible or other clinical signs of inflammation, their serum cytokine and C-reactive protein levels typically are elevated. However, the origin of age-associated systemic inflammation is unknown. Our previous studies showed that abnormalities in epidermal function provoke cutaneous inflammation, and because intrinsically aged skin displays compromised permeability barrier homeostasis and reduced stratum corneum hydration, we hypothesized here that epidermal dysfunction could contribute to the elevations in serum cytokines in the elderly. Our results show first that acute disruption of the epidermal permeability barrier in young mice leads not only to a rapid increase in cutaneous cytokine mRNA expression but also an increase in serum cytokine levels. Second, cytokine levels in both the skin and serum increase in otherwise normal, aged mice (>12 months). Third, expression of tumor necrosis factor-α and amyloid A mRNA levels increased in the epidermis, but not in the liver, in parallel with a significant elevation in serum levels of cytokines. Fourth, disruption of the permeability barrier induced similar elevations in epidermal and serum cytokine levels in normal and athymic mice, suggesting that T cells play a negligible role in the elevations in cutaneous and serum inflammatory cytokines induced by epidermal dysfunction. Fifth, correction of epidermal function significantly reduced cytokine levels not only in the skin but also in the serum of aged mice. Together, these results indicate that the sustained abnormalities in epidermal function in chronologically aged skin contribute to the elevated serum levels of inflammatory cytokines, potentially predisposing the elderly to the subsequent development or exacerbation of chronic inflammatory disorders.
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Affiliation(s)
- Lizhi Hu
- School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China.
| | - Theodora M Mauro
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA
| | - Erle Dang
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA; Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - George Man
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA
| | - Jing Zhang
- School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Dale Lee
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Kenneth R Feingold
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA; Metabolism, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA
| | - Peter M Elias
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA
| | - Mao-Qiang Man
- Dermatology Services, Veterans Affair Medical Center and University of California-San Francisco, San Francisco, California, USA.
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Saito M, Payne MS, Miura Y, Ireland DJ, Stock S, Kallapur SG, Kannan PS, Newnham JP, Kramer BW, Jobe AH, Keelan JA, Kemp MW. Polymyxin B Agonist Capture Therapy for Intrauterine Inflammation. Reprod Sci 2013; 21:623-31. [DOI: 10.1177/1933719113508820] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Masatoshi Saito
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
- Division of Perinatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - Matthew S. Payne
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Yuichiro Miura
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Demelza J. Ireland
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Sarah Stock
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Suhas G. Kallapur
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Centre, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Paranthaman S. Kannan
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Centre, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - John P. Newnham
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Boris W. Kramer
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
- Department of Paediatrics, School of Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Alan H. Jobe
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Centre, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Jeffrey A. Keelan
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
| | - Matthew W. Kemp
- School of Women’s and Infants’ Health, The University of Western Australia, Perth, Western Australia
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Correia Carreira S, Walker L, Paul K, Saunders M. The toxicity, transport and uptake of nanoparticles in thein vitroBeWo b30 placental cell barrier model used within NanoTEST. Nanotoxicology 2013; 9 Suppl 1:66-78. [DOI: 10.3109/17435390.2013.833317] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Abstract
Many organ systems undergo significant and rapid changes during the transition from an intrauterine to an extrauterine environment, especially those which serve as interfaces between the infant and the external environment. Historically the skin care methods employed during and after this period of rapid physiologic change have been derived from individual anecdotal experience or cultural tradition, rather than evidence-based or pathomechanistically derived data. While research in this area has historically been limited, it is increasing in scope and volume, and recent work has shed light on the changes experienced by the cutaneous organ during this period of transition. This increased understanding has driven new recommendations in skin care protocols for newborn infants and neonates.
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Affiliation(s)
- Jonathan A Dyer
- Dermatology and Child Health, University of Missouri, Columbia, MO 65212, USA.
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