{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T02:47:14Z","timestamp":1747190834736,"version":"3.40.5"},"reference-count":36,"publisher":"Wiley","license":[{"start":{"date-parts":[[2022,6,14]],"date-time":"2022-06-14T00:00:00Z","timestamp":1655164800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Kuopio University Hospital"},{"name":"Cancer Center of Eastern Finland of the University of Eastern Finland"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Analytical Cellular Pathology"],"published-print":{"date-parts":[[2022,6,14]]},"abstract":"<jats:p>Mast cells contribute to the pathogenesis of cutaneous vasculitis through complement C3 that is cleaved to C3b and then to iC3b by complement factor I. The receptor of iC3b, CD11b, is expressed on neutrophils and monocytes and CD14 on monocytes. Their role in vasculitis is obscure. In this study, frozen skin biopsies from the nonlesional skin, initial petechial lesion, and palpable purpura lesion from 10 patients with immunocomplex-mediated small vessel vasculitis were studied immunohistochemically for complement factor I, iC3b, CD11b, and CD14. Peripheral blood mononuclear cells from 5 healthy subjects were used to study cell migration and cytokine secretion. Already, the nonlesional skin revealed marked immunostaining of complement factor I, iC3b, CD11b, and CD14, and their expression increased sequentially in initial petechial and palpable purpura lesions. Mast cell C3c correlated to iC3b, and both of them correlated to CD11b+ and CD14+ cells, in the nonlesional skin. The stimulation of mononuclear cells with 0.01-0.1\u2009\u03bcg\/ml iC3b induced cell migration in the transwell assay. C3a stimulated slightly interleukin-8 secretion, whereas 1\u2009\u03bcg\/ml iC3b inhibited it slightly, in 4\/5 subjects. In conclusion, the C3-C3b-iC3b axis is activated already in the early vasculitis lesion leading to progressive accumulation of CD11b+ and CD14+ cells.<\/jats:p>","DOI":"10.1155\/2022\/3888734","type":"journal-article","created":{"date-parts":[[2022,6,14]],"date-time":"2022-06-14T15:05:49Z","timestamp":1655219149000},"page":"1-9","source":"Crossref","is-referenced-by-count":4,"title":["Sequential Increase in Complement Factor I, iC3b, and Cells Expressing CD11b or CD14 in Cutaneous Vasculitis"],"prefix":"10.1155","volume":"2022","author":[{"given":"Dina","family":"Rahkola","sequence":"first","affiliation":[{"name":"Department of Dermatology, University of Eastern Finland and Kuopio University Hospital, 70210 Kuopio, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tiina","family":"Lipits\u00e4","sequence":"additional","affiliation":[{"name":"Department of Dermatology, University of Eastern Finland and Kuopio University Hospital, 70210 Kuopio, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanna","family":"Siiskonen","sequence":"additional","affiliation":[{"name":"Department of Dermatology, University of Eastern Finland and Kuopio University Hospital, 70210 Kuopio, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anita","family":"Naukkarinen","sequence":"additional","affiliation":[{"name":"Department of Pathology, University of Eastern Finland, 70210 Kuopio, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9504-7255","authenticated-orcid":true,"given":"Ilkka T.","family":"Harvima","sequence":"additional","affiliation":[{"name":"Department of Dermatology, University of Eastern Finland and Kuopio University Hospital, 70210 Kuopio, Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2559.2009.03443.x"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1067\/mjd.2003.212"},{"issue":"2","key":"3","first-page":"555","article-title":"A role for mast cells in the development of adjuvant-induced vasculitis and arthritis","volume":"152","author":"B. 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