נטילת כדורי ארקוקסיה והשפעתם על איכות הזרע

התרופה עלולה לפגוע בכושר ההפריה של הזרע באמצעות שיבוש פעילות הסידן במעטפת תא הזרע להלן המאמר; The anti-inflammatory drug celecoxib inhibits T-type Ca2+ currents in spermatogenic cells yet it elicits the acrosome reaction in mature sperm. AuthorsBalderas E, et al. Show all Journal FEBS Lett. 2013 Aug 2;587(15):2412-9. doi: 10.1016/j.febslet.2013.05.068. Epub 2013 Jun 13.Affiliation Abstract Celecoxib (Cx), an anti-inflammatory drug designed to inhibit COX2, can affect some ion channels. T-type (CaV3) channels have been implicated in sperm physiology. Here we report and characterize the Cx induced inhibition of T-type channels in mouse spermatogenic cells. Unexpectedly, Cx can also induce the acrosome reaction (AR), an intracellular Ca(2+) ([Ca(2+)]i) increase and a sperm depolarization. This [Ca(2+)]i increase possibly results from the ability Cx has to alkalinize intracellular pH (pHi), which is known to activate the sperm specific Ca(2+) channel CatSper. As the Cx induced [Ca(2+)]i increase is sensitive to mibefradil, a CatSper blocker, this channel may mediate the Cx-induced Ca(2+) entry leading to the AR. Our observations demonstrate that Cx can compromise fertilization.