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Pharmacol."],"published-print":{"date-parts":[[2022,10,1]]},"abstract":"<jats:p> Apart from demonstrating the interaction behavior of malondialdehyde (MDA) with Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase using in silico, the current study aims to investigate the effect of rheumatoid arthritis-related oxidative stress on Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase activity that is present in the erythrocyte cell membrane, which is rich in proteins vulnerable to damage from MDA and other free radicals. The target population of this study consists of 28 rheumatoid arthritis patients and 20 healthy volunteers whose MDA levels and Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase activity were determined. It was shown that MDA levels of rheumatoid arthritis patients increased ( p\u00a0&lt;\u00a00.001) and their Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase activity noticeably decreased when compared to those of healthy individuals. Also, according to this in silico modeling, MDA decreased Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase activity in line with the correlation analyses. Consequently, while elevated levels of MDA in the rheumatoid arthritis group were suggestive of oxidative stress, a decreased Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase-activity led us to speculate that the cellular membrane had sustained injury. Therefore, our results could be useful in explaining how MDA affects Na<jats:sup>+<\/jats:sup>\/K<jats:sup>+<\/jats:sup>-ATPase activity in the interior of a specific molecular pathway. <\/jats:p>","DOI":"10.1139\/cjpp-2022-0171","type":"journal-article","created":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T11:00:39Z","timestamp":1663930839000},"page":"968-982","update-policy":"https:\/\/doi.org\/10.1139\/csp-crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Decreased Na<sup>+<\/sup>\/K<sup>+<\/sup> pump activity in the erythrocyte membrane due to malondialdehyde in rheumatoid arthritis: an in vivo and in silico study"],"prefix":"10.1139","volume":"100","author":[{"given":"Yasemin","family":"O\u011ful","sequence":"first","affiliation":[{"name":"Department of Medicinal Biochemistry, Regional Training and Research Hospital, Health Sciences University","place":["Erzurum, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5983-1472","authenticated-orcid":false,"given":"Fatma","family":"G\u00fcr","sequence":"additional","affiliation":[{"name":"Department of Medical Services and Techniques, Health Services Vocational School, Ataturk University","place":["Erzurum, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0579-6354","authenticated-orcid":false,"given":"Bahri","family":"G\u00fcr","sequence":"additional","affiliation":[{"name":"Department of Biochemistry, Faculty of Sciences and Arts, I\u011fd\u0131r University","place":["I\u011fd\u0131r, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mustafa","family":"Cengiz","sequence":"additional","affiliation":[{"name":"Department of Elementary Education, Faculty of Education, Siirt University","place":["Siirt, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Refik Ali","family":"Sar\u0131","sequence":"additional","affiliation":[{"name":"Department of Internal Diseases, Faculty of Medicine, Karadeniz Technical University","place":["Trabzon, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ahmet","family":"K\u0131z\u0131ltun\u00e7","sequence":"additional","affiliation":[{"name":"Department of Biochemistry, Faculty of Medicine, Ataturk University","place":["Erzurum, Turkey"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"155","reference":[{"key":"refg1\/ref1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9343(00)00481-2"},{"key":"refg2\/ref2","doi-asserted-by":"publisher","DOI":"10.1023\/B:JCAM.0000017496.76572.6f"},{"issue":"5","key":"refg3\/ref3","first-page":"4035","volume":"19","author":"Buyukokuroglu M.E.","year":"2007","journal-title":"Asian J. 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