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Upregulation of CCL7, CCL20, CXCL2, IL-1β, IL-6 and MMP-9 in Skin Samples of PCB Exposed Individuals—A Preliminary Study

Author

Listed:
  • Marike Leijs

    (Department of Dermatology and Allergology, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany
    Department of Dermatology, St. Nikolaus Hospital Eupen, 4700 Eupen, Belgium)

  • Katharina Fietkau

    (Department of Dermatology and Allergology, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany)

  • Hans F. Merk

    (Department of Dermatology and Allergology, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany)

  • Thomas Schettgen

    (Institute for Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany)

  • Thomas Kraus

    (Institute for Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany)

  • André Esser

    (Institute for Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, 52072 Aachen, Germany)

Abstract

Polychlorinated biphenyls (PCBs) are well known immunotoxic and carcinogenic compounds. Although cutaneous symptoms are the hallmark of exposure to these compounds, exact pathophysiologic mechanisms are not well understood. We took skin biopsies from moderately high PCB exposed workers ( n = 25) after an informed consent and investigated the expression of immunological markers such as CCL-7, CCL-20, CXCL2, IL-1β and IL-6, as well as the matrix metalloproteinase MMP-9, EPGN and NRF2 by RT-qPCR, and compared expression levels with plasma PCB levels. Statistical analyses showed a significant correlation between CCL-20, CXCL2, IL-6, IL-1β, CCL-7 and MMP-9 and PCB serum levels. EPGN and NRF2 were not correlated to PCB levels in the blood. We found a significant correlation of genes involved in autoimmune, auto-inflammatory and carcinogenesis in skin samples of PCB exposed individuals with elevated plasma PCB levels. Confirmation of these findings needs to be performed in bigger study groups and larger gen-sets, including multiple housekeeping genes. Further study needs to be performed to see whether a chronical exposure to these and similar compounds can cause higher incidence of malignancies and inflammatory disease.

Suggested Citation

  • Marike Leijs & Katharina Fietkau & Hans F. Merk & Thomas Schettgen & Thomas Kraus & André Esser, 2021. "Upregulation of CCL7, CCL20, CXCL2, IL-1β, IL-6 and MMP-9 in Skin Samples of PCB Exposed Individuals—A Preliminary Study," IJERPH, MDPI, vol. 18(18), pages 1-12, September.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:18:p:9711-:d:636034
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    References listed on IDEAS

    as
    1. Masutaka Furue & Gaku Tsuji, 2019. "Chloracne and Hyperpigmentation Caused by Exposure to Hazardous Aryl Hydrocarbon Receptor Ligands," IJERPH, MDPI, vol. 16(23), pages 1-11, December.
    2. Hajo Haase & Astrid Fahlenkamp & Thomas Schettgen & Andre Esser & Monika Gube & Patrick Ziegler & Thomas Kraus & Lothar Rink, 2016. "Immunotoxicity Monitoring in a Population Exposed to Polychlorinated Biphenyls," IJERPH, MDPI, vol. 13(3), pages 1-13, March.
    3. Marike M. Leijs & Lin Gan & Patrick De Boever & André Esser & Philipp M. Amann & Patrick Ziegler & Katharina Fietkau & Thomas Schettgen & Thomas Kraus & Hans F. Merk & Jens M. Baron, 2019. "Altered Gene Expression in Dioxin-Like and Non-Dioxin-Like PCB Exposed Peripheral Blood Mononuclear Cells," IJERPH, MDPI, vol. 16(12), pages 1-16, June.
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