{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T03:37:27Z","timestamp":1789616247038,"version":"build-2803163510"},"reference-count":48,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,4,7]],"date-time":"2025-04-07T00:00:00Z","timestamp":1743984000000},"content-version":"vor","delay-in-days":6,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Health Science Reports"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Background and Aim<\/jats:title><jats:p>COVID\u201019 is caused by severe acute respiratory syndrome coronavirus\u20102 (SARS\u2010CoV\u20102) as a pandemic infectious disease. So far, it has been known that this virus uses several receptors to enter the host cell, one of which is neuropilin\u20101 (NRP1). Also, one of the main causes of clinical manifestations, severity of disease, and mortality of patients is cytokine storm syndrome, one of these cytokines being interleukin (IL)\u20106. Our aim was to study the level of expression of NRP1 and IL\u20106 genes in COVID\u201019 patients by using peripheral blood mononuclear cells (PBMCs).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Our study population included the test group (80 patients with COVID\u201019) and the control group (30 healthy individuals). Venous blood was taken from all subjects. After isolating PBMCs from blood using Ficoll, RNA was extracted. Then, cDNA synthesis, the expression level of NRP1 and IL\u20106 compared to GAPDH housekeeping gene was measured by real\u2010time PCR.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The level of NRP1 gene expression was increased significantly in COVID\u201019 different groups compared to the control group. Surprisingly, it was observed that the amount of NRP1 gene decreased in the vaccinated group compared to nonvaccinated groups. IL\u20106 gene expression was also significantly increased in all groups except vaccinated patients compared to the control group. Also, the results indicated that there was a positive and statistically considerable relationship between IL\u20106 expression level and NRP1 expression level (<jats:italic>p<\/jats:italic>\u2009=\u20090.03).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The significant increase in the expression of NRP1 and IL\u20106 genes in COVID\u201019 patients, especially in moderate and severe cases, indicates their potential involvement in the progression of the disease, which may serve as biomarkers of disease severity. Also, since these genes play an important role in causing severe inflammation, cytokine storm, and immunopathological complications of COVID\u201019, further investigations maybe needed to achieve therapeutic goals to control COVID\u201019 and similar diseases.<\/jats:p><\/jats:sec>","DOI":"10.1002\/hsr2.70630","type":"journal-article","created":{"date-parts":[[2025,4,7]],"date-time":"2025-04-07T08:41:02Z","timestamp":1744015262000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Neuropilin\u20101 as a Neuroinflammatory Entry Factor for SARS\u2010CoV\u20102 Is Attenuated in Vaccinated COVID\u201019 Patients: A Case\u2013Control Study"],"prefix":"10.1002","volume":"8","author":[{"given":"Faezeh","family":"Hosseini","sequence":"first","affiliation":[{"name":"Student Research Committee, Babol University of Medical Sciences Babol Iran"},{"name":"Cellular and Molecular Biology Research Center Health Research Institute, 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