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Air Pollution and COVID-19: A Possible Dangerous Synergy for Male Fertility

Author

Listed:
  • Luigi Montano

    (Andrology Unit and Service of Lifestyle Medicine in UroAndrology, Local Health Authority (ASL) Salerno, Coordination Unit of the Network for Environmental and Reproductive Health (EcoFoodFertility Project), “Oliveto Citra Hospital”, 84020 Oliveto Citra, Italy
    PhD Program in Evolutionary Biology and Ecology, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy)

  • Francesco Donato

    (Unit of Hygiene, Epidemiology, and Public Health, Department of Medical and Surgical Specialties Radiological Sciences and Public Health, University of Brescia, 21100 Brescia, Italy)

  • Pietro Massimiliano Bianco

    (ISPRA, Italian Institute for Environmental Protection and Research, Via Vitaliano Brancati 60, 00144 Roma, Italy)

  • Gennaro Lettieri

    (Department of Biology, University of Naples Federico II, 80126 Napoli, Italy)

  • Antonino Guglielmino

    (Unit of Reproductive Medicine (UMR), 95030 Catania, Italy)

  • Oriana Motta

    (Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Salerno, Italy)

  • Ian Marc Bonapace

    (Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
    These authors contribute equally (co-last).)

  • Marina Piscopo

    (Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
    These authors contribute equally (co-last).)

Abstract

Several studies indicate that semen quality has strongly declined in the last decades worldwide. Air pollution represents a significant co-factor with the COVID-19 impact and has negative effects on the male reproductive system, through pro-oxidant, inflammatory and immune-dysregulating mechanisms. It has recently been reported that chronic exposure to PM2.5 causes overexpression of the alveolar ACE2 receptor, the entry route of SARS-CoV-2 into the organism shared by the lungs and testis where expression is highest in the body. In the testis, the ACE2/Ang-(1–7)/MasR pathway plays an important role in the regulation of spermatogenesis and an indirect mechanism of testicular damage could be due to the blockade of the ACE2 receptor by SARS-CoV-2. This prevents the conversion of specific angiotensins, and their excess causes inflammation with the overproduction of cytokines. PM2.5-induced overexpression of the alveolar ACE2 receptor, in turn, could increase local viral load in patients exposed to pollutants, producing ACE2 receptor depletion and compromising host defenses. By presenting an overall view of epidemiological data and molecular mechanisms, this manuscript aims to interpret the possible synergistic effects of both air pollution and COVID-19 on male reproductive function, warning that the spread of SARS-CoV-2 in the fertile years may represent a significant threat to global reproductive health. All of this should be of great concern, especially for men of the age of maximum reproductive capacity, and an important topic of debate for policy makers. Altered environmental conditions, together with the direct and indirect short- and long-term effects of viral infection could cause a worsening of semen quality with important consequences for male fertility, especially in those areas with higher environmental impact.

Suggested Citation

  • Luigi Montano & Francesco Donato & Pietro Massimiliano Bianco & Gennaro Lettieri & Antonino Guglielmino & Oriana Motta & Ian Marc Bonapace & Marina Piscopo, 2021. "Air Pollution and COVID-19: A Possible Dangerous Synergy for Male Fertility," IJERPH, MDPI, vol. 18(13), pages 1-21, June.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:13:p:6846-:d:582410
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    References listed on IDEAS

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    1. Hannah Peckham & Nina M. Gruijter & Charles Raine & Anna Radziszewska & Coziana Ciurtin & Lucy R. Wedderburn & Elizabeth C. Rosser & Kate Webb & Claire T. Deakin, 2020. "Male sex identified by global COVID-19 meta-analysis as a risk factor for death and ITU admission," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    2. Marina Borro & Paolo Di Girolamo & Giovanna Gentile & Ottavia De Luca & Robert Preissner & Adriano Marcolongo & Stefano Ferracuti & Maurizio Simmaco, 2020. "Evidence-Based Considerations Exploring Relations between SARS-CoV-2 Pandemic and Air Pollution: Involvement of PM2.5-Mediated Up-Regulation of the Viral Receptor ACE-2," IJERPH, MDPI, vol. 17(15), pages 1-13, August.
    3. Wenjing Ji & Bin Zhao, 2015. "Estimating Mortality Derived from Indoor Exposure to Particles of Outdoor Origin," PLOS ONE, Public Library of Science, vol. 10(4), pages 1-15, April.
    4. Nisreen A. Alwan, 2020. "A negative COVID-19 test does not mean recovery," Nature, Nature, vol. 584(7820), pages 170-170, August.
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    Cited by:

    1. Alessandra Gallo, 2022. "Reprotoxic Impact of Environment, Diet, and Behavior," IJERPH, MDPI, vol. 19(3), pages 1-20, January.
    2. Salvatore Raimondo & Mariacira Gentile & Giusy Esposito & Tommaso Gentile & Ida Ferrara & Claudia Crescenzo & Mariangela Palmieri & Felice Cuomo & Stefania De Filippo & Gennaro Lettieri & Marina Pisco, 2021. "Could Kallikrein-Related Serine Peptidase 3 Be an Early Biomarker of Environmental Exposure in Young Women?," IJERPH, MDPI, vol. 18(16), pages 1-15, August.
    3. Pasquale Perrone & Gennaro Lettieri & Carmela Marinaro & Valentina Longo & Simonetta Capone & Angiola Forleo & Sebastiana Pappalardo & Luigi Montano & Marina Piscopo, 2022. "Molecular Alterations and Severe Abnormalities in Spermatozoa of Young Men Living in the “Valley of Sacco River” (Latium, Italy): A Preliminary Study," IJERPH, MDPI, vol. 19(17), pages 1-18, September.

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