{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T00:21:12Z","timestamp":1773015672154,"version":"3.50.1"},"reference-count":50,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2025,11,29]],"date-time":"2025-11-29T00:00:00Z","timestamp":1764374400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,11,29]],"date-time":"2025-11-29T00:00:00Z","timestamp":1764374400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["American J Hum Biol"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>The purpose of this study was to identify the functional characteristics of blood proteins which are important in assessing reproductive health due to their immunoregulatory effects in women residing in the European North and Arctic regions of the Russian Federation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A total of 557 women aged 21\u201355 (36.89\u2009\u00b1\u20090.54), engaged in intellectual professions, born and long\u2010term residents of the European North (Arkhangelsk Oblast) and Arctic (Murmansk Oblast, Svalbard archipelago) participated. The hemogram, phagocytic activity of neutrophils, erythrocyte aggregation, lymphocyte content with CD3, CD4, CD8, CD10, CD19, CD16, CD71, CD95 phenotypes, cytokines: TNF\u2010\u03b1, IFN\u2010\u03b3, IL\u20106, IL\u201010, extracellular receptors: sCD71, sCD62L, sApo\u20101\/Fas, sFasL, circulating immune complexes, sex hormones, and as well as immunoregulatory blood proteins: haptoglobin, transferrin, immunoglobulins, lipoproteins, apoproteins, were evaluated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In women from Arkhangelsk Oblast, transferrin levels showed a substantial increase, while IgA levels decreased relative to the reference range. In women from Murmansk Oblast, haptoglobin, IgM, and IgA levels increased, and a reduction in IgG levels was observed. In women from the Svalbard Archipelago, transferrin and IgM concentrations increased, whereas IgG and IgA levels decreased. Additionally, in women from the European North and Arctic, a decrease in ApoB and ApoA\u2010I content was observed. Elevated levels of transferrin and a decrease in lymphocytes with a transferrin receptor CD71+ and an increase in soluble transferrin receptor sCD71 levels were noted. Elevated haptoglobin levels are related to lymphocyte activation. The frequent occurrence of reduced IgA and IgG levels suggests impaired immunoglobulin class switching. Reduced levels of ApoB and ApoA\u2010I indicate the early stages of lipid metabolism disorders.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The immunoregulatory role of blood proteins determines their functional characteristics in women living in the European North and the Arctic. Reduced antioxidant protection, metabolic disorders, and dysregulation of the immune response in women living in Northern and Arctic regions can lead to reproductive health risks.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ajhb.70162","type":"journal-article","created":{"date-parts":[[2025,11,29]],"date-time":"2025-11-29T09:04:03Z","timestamp":1764407043000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Functional Characteristics of Immunoregulatory Blood Proteins in Women of Reproductive Age Residing in the European North and Arctic Regions of the Russian Federation"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6774-4598","authenticated-orcid":false,"given":"Ksenya O.","family":"Pashinskaya","sequence":"first","affiliation":[{"name":"N. 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