{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:08:33Z","timestamp":1787026113073,"version":"build-2736575974"},"reference-count":39,"publisher":"Institute of Physiology of the Czech Academy of Sciences","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Physiol Res"],"published-print":{"date-parts":[[2016,12,30]]},"abstract":"<jats:p>Several studies have shown that diabetes mellitus modulates heart resistance to ischemia and abrogates effectivity of cardioprotective interventions, such as ischemic preconditioning (IP). The aim of this study was to evaluate whether the effect of hyperglycemic conditions on the severity of ischemia-reperfusion (I\/R) injury in preconditioned and non-preconditioned hearts (controls, C) is related to changes in osmotic activity of glucose. Experiments were performed in isolated rat hearts perfused according to Langendorff exposed to 30-min coronary occlusion\/ 120-min reperfusion. IP was induced by two cycles of 5-min coronary occlusion\/5-min reperfusion, prior to the long-term I\/R. Hyperosmotic (HO) state induced by an addition of mannitol (11 mmol\/l) to a standard Krebs-Henseleit perfusion medium significantly decreased the size of infarction and also suppressed a release of heart fatty acid binding protein (h-FABP \u2013 biomarker of cell injury) from the non-IP hearts nearly to 50 %, in comparison with normoosmotic (NO) mannitol-free perfusion. However, IP in HO conditions significantly increased the size of infarction and tended to elevate the release of h-FABP to the effluent from the heart. The results indicate that HO environment plays a cardioprotective role in the ischemic myocardium. On the other hand, increased osmolarity, similar to that in the hyperglycemic conditions, may play a pivotal role in a failure of IP to induce cardioprotection in the diabetic myocardium.<\/jats:p>","DOI":"10.33549\/physiolres.933362","type":"journal-article","created":{"date-parts":[[2020,3,7]],"date-time":"2020-03-07T05:59:30Z","timestamp":1583560770000},"page":"1045-1051","source":"Crossref","is-referenced-by-count":12,"title":["Hyperosmotic Environment Blunts Effectivity of Ischemic Preconditioning Against Ischemia-Reperfusion Injury and Improves Ischemic Tolerance in Non-Preconditioned Isolated Rat Hearts"],"prefix":"10.33549","author":[{"given":"M.","family":"Z\u00c1LE\u0160\u00c1K","sequence":"first","affiliation":[{"name":"Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovak Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"BLA\u017d\u00cd\u010cEK","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.","family":"PANCZA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I.","family":"GABLOVSK\u00dd","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.","family":"\u0160TRB\u00c1K","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"RAVINGEROV\u00c1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"19169","published-online":{"date-parts":[[2016,12,18]]},"reference":[{"key":"ref0","doi-asserted-by":"publisher","unstructured":"ALFIERI RR, PETRONINI PG: Hyperosmotic stress response: comparison with other cellular mechanism. 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