Immune regulatory cytokines in seminal plasma of healthy men: A scoping review and analysis of variance

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dc.contributor.authorLyons, H.E.
dc.contributor.authorArman, B.M.
dc.contributor.authorRobertson, S.A.
dc.contributor.authorSharkey, D.J.
dc.date.issued2023
dc.descriptionFirst published: 09 March 2023
dc.description.abstractObjective: Seminal plasma cytokines are associated with fertility and reproductive health, but progressing their clinical utility is hampered by absence of reference data on concentration ranges of relevant cytokines in healthy men. We employed a systematic approach to assemble current evidence on the concentrations of immune regulatory cytokines present in seminal plasma (SP) of normozoospermic and/or fertile men and evaluated the impact of different platform methodologies for cytokine quantification. Evidence review: A systematic literature search was performed utilising PubMed, Web of Science and Scopus. Databases were searched from inception until 30th June 2022 inclusive, using combinations of keywords pertaining to seminal fluid and cytokines, and was restricted to human participants. Original data with values reported as concentration of specific cytokines in SP of men clearly defined as fertile or normozoospermic were extracted from studies written in English. Results: A total of 3769 publications were initially identified, ofwhich 118 fulfilled the eligibility criteria for inclusion. A total of 51 individual cytokines are detectable in SP of healthy men. The number of studies reporting on each cytokine range from 1 to >20. The reported concentrations for many cytokines linked with fertility status, including IL6, CXCL8/IL8, and TNFA, are highly variable between published studies. This is associated with the different immunoassaymethodologies utilised andmay be exacerbated by a lack of validation of assays to ensure suitability for SP assessment. Due to the large variation between studies, accurate reference ranges for healthy men cannot be determined from the published data. Conclusions: The concentrations of cytokines and chemokines detected in SP is inconsistent and highly variable between studies and cohorts, limiting current capacity to define reference ranges for cytokine concentrations in fertile men. The lack of standardisation in methods used to process and store SP, and variation in platforms used to evaluate cytokine abundance, are factors contributing to the observed heterogeneity. To progress the clinical utility of SP cytokine analysis will require standardisation and validation ofmethodologies so that reference ranges for healthy fertile men can be defined.
dc.description.statementofresponsibilityHannah E. Lyons, BridgetM. Arman, Sarah A. Robertson, David J. Sharkey
dc.identifier.citationAndrology, 2023; 11(7):1245-1266
dc.identifier.doi10.1111/andr.13424
dc.identifier.issn2047-2919
dc.identifier.issn2047-2927
dc.identifier.orcidLyons, H.E. [0000-0001-5305-2654]
dc.identifier.orcidArman, B.M. [0000-0003-0314-378X]
dc.identifier.orcidRobertson, S.A. [0000-0002-9967-0084]
dc.identifier.orcidSharkey, D.J. [0000-0002-4831-7950]
dc.identifier.urihttps://hdl.handle.net/2440/138129
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/nhmrc/1139509
dc.relation.granthttp://purl.org/au-research/grants/nhmrc/1198172
dc.rights© 2023 The Authors. Andrology published byWiley Periodicals LLC on behalf of American Society of Andrology and European Academy of Andrology. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.source.urihttps://doi.org/10.1111/andr.13424
dc.subjectchemokines; cytokines; male fertility; semen analysis; seminal plasma
dc.titleImmune regulatory cytokines in seminal plasma of healthy men: A scoping review and analysis of variance
dc.typeJournal article
pubs.publication-statusPublished

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