{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T13:38:51Z","timestamp":1791121131828,"version":"4.1.0"},"reference-count":54,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"12","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[2009,3,31]]},"abstract":"<jats:p>\n                    <jats:bold>\n                      <jats:italic>Background\u2014<\/jats:italic>\n                    <\/jats:bold>\n                    Master regulators of protein synthesis such as mammalian target of rapamycin (mTOR) and p70S6 kinase contribute to left ventricular hypertrophy. These prohypertrophic pathways are modulated by a number of kinase cascades, including the hierarchical LKB1\/AMP-activated protein kinase (AMPK) energy-sensing pathway. Because oxidative stress inhibits the LKB1\/AMPK signaling axis to promote abnormal cell growth in cancer cells, we investigated whether oxidative stress associated with hypertension also results in the inhibition of this kinase circuit to contribute to left ventricular hypertrophy.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>\n                      <jats:italic>Methods and Results\u2014<\/jats:italic>\n                    <\/jats:bold>\n                    In the spontaneously hypertensive rat, a well-established genetic model of hypertension and subsequent cardiac hypertrophy, the development of left ventricular hypertrophy is associated with an increase in the electrophilic lipid peroxidation byproduct 4-hydroxy-2-nonenal (HNE). Using isolated cardiomyocytes, we show that elevated levels of HNE result in the formation of HNE-LKB1 adducts that inhibit LKB1 and subsequent AMPK activity. Consistent with inhibition of the LKB1\/AMPK signaling pathway, the mTOR\/p70S6 kinase system is activated, which is permissive for cardiac myocyte cell growth. Treatment of cardiomyocytes with resveratrol prevents HNE modification of the LKB1\/AMPK signaling axis and blunts the prohypertrophic p70S6 kinase response. Furthermore, administration of resveratrol to spontaneously hypertensive rats results in increased AMPK phosphorylation and activity and reduced left ventricular hypertrophy.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>\n                      <jats:italic>Conclusions\u2014<\/jats:italic>\n                    <\/jats:bold>\n                    Our data identify a molecular mechanism in the cardiomyocyte involving the oxidative stress\u2013derived lipid peroxidation byproduct HNE and the LKB1\/AMPK signaling pathway that contributes to the development of left ventricular hypertrophy. We also suggest that resveratrol may be a potential therapy for patients at risk for developing pathological cardiac hypertrophy by preventing this prohypertrophic process.\n                  <\/jats:p>","DOI":"10.1161\/circulationaha.108.787440","type":"journal-article","created":{"date-parts":[[2009,3,16]],"date-time":"2009-03-16T21:35:13Z","timestamp":1237239313000},"page":"1643-1652","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":215,"title":["Resveratrol Prevents the Prohypertrophic Effects of Oxidative Stress on LKB1"],"prefix":"10.1161","volume":"119","author":[{"given":"Vernon W.","family":"Dolinsky","sequence":"first","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anita Y.M.","family":"Chan","sequence":"additional","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabelle","family":"Robillard Frayne","sequence":"additional","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter E.","family":"Light","sequence":"additional","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christine","family":"Des Rosiers","sequence":"additional","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason R.B.","family":"Dyck","sequence":"additional","affiliation":[{"name":"From the Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta (V.W.D., A.Y.M.C., P.E.L., J.R.B.D.), and Montreal Heart Institute and University of Montreal, Montreal, Quebec (I.R.F., C.D.R.), Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","first-page":"3824","volume":"96","year":"1997","unstructured":"Lorell BH. 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