PMID- 23993975 OWN - NLM STAT- MEDLINE DCOM- 20140106 LR - 20181202 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 273 IP - 1 DP - 2013 Nov 15 TI - Differential cardiotoxicity in response to chronic doxorubicin treatment in male spontaneous hypertension-heart failure (SHHF), spontaneously hypertensive (SHR), and Wistar Kyoto (WKY) rats. PG - 47-57 LID - S0041-008X(13)00362-1 [pii] LID - 10.1016/j.taap.2013.08.012 [doi] AB - Life threatening complications from chemotherapy occur frequently in cancer survivors, however little is known about genetic risk factors. We treated male normotensive rats (WKY) and strains with hypertension (SHR) and hypertension with cardiomyopathy (SHHF) with 8 weekly doses of doxorubicin (DOX) followed by 12weeks of observation to test the hypothesis that genetic cardiovascular disease would worsen delayed cardiotoxicity. Compared with WKY, SHR demonstrated weight loss, decreased systolic blood pressure, increased kidney weights, greater cardiac and renal histopathologic lesions and greater mortality. SHHF showed growth restriction, increased kidney weights and renal histopathology but no effect on systolic blood pressure or mortality. SHHF had less severe cardiac lesions than SHR. We evaluated cardiac soluble epoxide hydrolase (sEH) content and arachidonic acid metabolites after acute DOX exposure as potential mediators of genetic risk. Before DOX, SHHF and SHR had significantly greater cardiac sEH and decreased epoxyeicosatrienoic acid (EET) (4 of 4 isomers in SHHF and 2 of 4 isomers in SHR) than WKY. After DOX, sEH was unchanged in all strains, but SHHF and SHR rats increased EETs to a level similar to WKY. Leukotriene D4 increased after treatment in SHR. Genetic predisposition to heart failure superimposed on genetic hypertension failed to generate greater toxicity compared with hypertension alone. The relative resistance of DOX-treated SHHF males to the cardiotoxic effects of DOX in the delayed phase despite progression of genetic disease was unexpected and a key finding. Strain differences in arachidonic acid metabolism may contribute to variation in response to DOX toxicity. CI - (c) 2013 Elsevier Inc. All rights reserved. FAU - Sharkey, Leslie C AU - Sharkey LC AD - Veterinary Clinical Sciences Department, University of Minnesota, 1352 Boyd Ave, St. Paul, MN 55108 USA. Electronic address: shark009@umn.edu. FAU - Radin, M Judith AU - Radin MJ FAU - Heller, Lois AU - Heller L FAU - Rogers, Lynette K AU - Rogers LK FAU - Tobias, Anthony AU - Tobias A FAU - Matise, Ilze AU - Matise I FAU - Wang, Qi AU - Wang Q FAU - Apple, Fred S AU - Apple FS FAU - McCune, Sylvia A AU - McCune SA LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130828 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Cardiotoxins) RN - 0 (Troponin T) RN - 27YG812J1I (Arachidonic Acid) RN - 73836-78-9 (Leukotriene D4) RN - 80168379AG (Doxorubicin) RN - EC 3.3.2.- (Epoxide Hydrolases) RN - FC398RK06S (8,11,14-Eicosatrienoic Acid) SB - IM MH - 8,11,14-Eicosatrienoic Acid/blood MH - Animals MH - Arachidonic Acid/blood MH - Blood Pressure/drug effects MH - Body Weight/drug effects MH - Cardiotoxins/*toxicity MH - Chromatography, High Pressure Liquid MH - Doxorubicin/*toxicity MH - Epoxide Hydrolases/metabolism MH - Genetic Predisposition to Disease MH - Heart Diseases/chemically induced/*genetics/*pathology MH - Kidney/drug effects/pathology MH - Leukotriene D4/blood MH - Male MH - Organ Size/drug effects MH - Rats MH - *Rats, Inbred SHR MH - *Rats, Inbred WKY MH - Troponin T/blood MH - Ventricular Function, Left/drug effects OTO - NOTNLM OT - %FS OT - Arachidonic acid OT - BW OT - CYP OT - Cardiotoxicity OT - DHET OT - DOX OT - Doxorubicin OT - EET OT - Epoxyeicosatrienoic acid OT - HE OT - HETE OT - Hypertension OT - LTD4 OT - LVIDd OT - LVIDs OT - SAL OT - SBP OT - SHHF OT - SHR OT - Soluble epoxide hydrolase OT - WKY OT - Wistar Kyoto rat OT - body weight OT - cTnT OT - cardiac troponin T OT - cytochrome P450 OT - dihydroxyeicosatrienoic acid OT - doxorubicin OT - epoxyeicosatrienoic acid OT - hematoxylin and eosin OT - hydroxyeicosatetraenoic acid OT - left ventricular fractional shortening OT - left ventricular internal diameter in diastole OT - left ventricular internal diameter in systole OT - leukotriene D4 OT - sEH OT - saline OT - soluble epoxide hydrolase OT - spontaneous hypertension heart failure rat OT - spontaneously hypertensive rat OT - systolic blood pressure EDAT- 2013/09/03 06:00 MHDA- 2014/01/07 06:00 CRDT- 2013/09/03 06:00 PHST- 2013/03/20 00:00 [received] PHST- 2013/07/28 00:00 [revised] PHST- 2013/08/10 00:00 [accepted] PHST- 2013/09/03 06:00 [entrez] PHST- 2013/09/03 06:00 [pubmed] PHST- 2014/01/07 06:00 [medline] AID - S0041-008X(13)00362-1 [pii] AID - 10.1016/j.taap.2013.08.012 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2013 Nov 15;273(1):47-57. doi: 10.1016/j.taap.2013.08.012. Epub 2013 Aug 28.