{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T09:46:58Z","timestamp":1789724818428,"version":"4.0.1"},"reference-count":20,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2014,5,14]],"date-time":"2014-05-14T00:00:00Z","timestamp":1400025600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cytometry Pt A"],"published-print":{"date-parts":[[2014,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Functional imbalance between T helper subsets plays important role in the pathogenesis of autoimmune disorders. Transient increase of cytoplasmic calcium level, and sustention of negative membrane potential by voltage sensitive Kv1.3 and calcium\u2010dependent IKCa1 potassium channels are essential for short\u2010term lymphocyte activation, thus present possible target for selective immunomodulation. We aimed to investigate calcium influx sensitivity to the inhibition of potassium channels in the main T helper subsets. Peripheral blood from 11 healthy individuals was drawn and calcium influx kinetics following activation with phytohemagglutinin in Th1, Th2, Th17, and Treg cells were evaluated. Alteration of calcium influx induced by specific inhibitors of Kv1.3 and IKCa1 potassium channels, and the expression of Kv1.3 channels were also assessed. Highest cytoplasmic calcium concentration was observed in stimulated Th1 cells, while the lowest level was measured in Treg cells. In Th1 and Th17 cells, inhibition of both investigated potassium channels decreased calcium influx. In Th2 cells only the inhibitor of Kv1.3 channels, while in Treg cells none of the inhibitors had significant effect. Upon the inhibition of IKCa1 channels, short\u2010term activation of proinflammatory cells was specifically decreased without affecting anti\u2010inflammatory subsets, indicating that selective immunomodulation is possible in healthy individuals. \u00a9 2014 International Society for Advancement of Cytometry<\/jats:p>","DOI":"10.1002\/cyto.a.22479","type":"journal-article","created":{"date-parts":[[2014,5,14]],"date-time":"2014-05-14T15:53:39Z","timestamp":1400082819000},"page":"636-641","source":"Crossref","is-referenced-by-count":18,"title":["Different calcium influx characteristics upon Kv1.3 and IKCa1 potassium channel inhibition in T helper subsets"],"prefix":"10.1002","volume":"85","author":[{"given":"Csaba","family":"Orb\u00e1n","sequence":"first","affiliation":[{"name":"First Department of Pediatrics Semmelweis University H\u20101083 Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Bajnok","sequence":"additional","affiliation":[{"name":"First Department of Pediatrics Semmelweis University H\u20101083 Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barna","family":"V\u00e1s\u00e1rhelyi","sequence":"additional","affiliation":[{"name":"Department of Laboratory Medicine Semmelweis University H\u20101089 Budapest Hungary"},{"name":"MTA\u2010SE, Pediatrics and Nephrology Research Group H\u20101083 Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tivadar","family":"Tulassay","sequence":"additional","affiliation":[{"name":"First Department of Pediatrics Semmelweis University H\u20101083 Budapest Hungary"},{"name":"MTA\u2010SE, Pediatrics and Nephrology Research Group H\u20101083 Budapest 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