Ontology type: schema:ScholarlyArticle Open Access: True
2015-12
AUTHORSChristopher M. Haggerty, Andrea C. Mattingly, Sage P. Kramer, Cassi M. Binkley, Linyuan Jing, Jonathan D. Suever, David K. Powell, Richard J. Charnigo, Frederick H. Epstein, Brandon K. Fornwalt
ABSTRACTBACKGROUND: Obesity is a risk factor for cardiovascular disease. There is evidence of impaired left ventricular (LV) function associated with obesity, which may relate to cardiovascular mortality, but some studies have reported no dysfunction. Ventricular function data are generally acquired under resting conditions, which could mask subtle differences and potentially contribute to these contradictory findings. Furthermore, abnormal ventricular mechanics (strains, strain rates, and torsion) may manifest prior to global changes in cardiac function (i.e., ejection fraction) and may therefore represent more sensitive markers of cardiovascular disease. This study evaluated LV mechanics under both resting and stress conditions with the hypothesis that the LV mechanical dysfunction associated with obesity is exacerbated with stress and manifested at earlier stages of disease compared to baseline. METHODS: C57BL/6J mice were randomized to a high-fat or control diet (60 %, 10 % kcal from fat, respectively) for varying time intervals (n = 7 - 10 subjects per group per time point, 100 total; 4 - 55 weeks on diet). LV mechanics were quantified under baseline (resting) and/or stress conditions (40 μg/kg/min continuous infusion of dobutamine) using cine displacement encoding with stimulated echoes (DENSE) with 7.4 ms temporal resolution on a 7 T Bruker ClinScan. Peak strain, systolic strain rates, and torsion were quantified. A linear mixed model was used with Benjamini-Hochberg adjustments for multiple comparisons. RESULTS: Reductions in LV peak longitudinal strain at baseline were first observed in the obese group after 42 weeks, with no differences in systolic strain rates or torsion. Conversely, reductions in longitudinal strain and circumferential and radial strain rates were seen under inotropic stress conditions after only 22 weeks on diet. Furthermore, stress cardiovascular magnetic resonance (CMR) evaluation revealed supranormal values of LV radial strain and torsion in the obese group early on diet, followed by later deficits. CONCLUSIONS: Differences in left ventricular mechanics in obese mice are exacerbated under stress conditions. Stress CMR demonstrated a broader array of mechanical dysfunction and revealed these differences at earlier time points. Thus, it may be important to evaluate cardiac function in the setting of obesity under stress conditions to fully elucidate the presence of ventricular dysfunction. More... »
PAGES75
http://scigraph.springernature.com/pub.10.1186/s12968-015-0180-7
DOIhttp://dx.doi.org/10.1186/s12968-015-0180-7
DIMENSIONShttps://app.dimensions.ai/details/publication/pub.1014419393
PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/26310667
JSON-LD is the canonical representation for SciGraph data.
TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT
[
{
"@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json",
"about": [
{
"id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/1103",
"inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/",
"name": "Clinical Sciences",
"type": "DefinedTerm"
},
{
"id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/11",
"inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/",
"name": "Medical and Health Sciences",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Animals",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Biomechanical Phenomena",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Cardiotonic Agents",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Diet, High-Fat",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Disease Models, Animal",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Dobutamine",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Infusions, Intravenous",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Linear Models",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Magnetic Resonance Imaging, Cine",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Male",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Mice, Inbred C57BL",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Myocardial Contraction",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Obesity",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Predictive Value of Tests",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Risk Factors",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Stress, Mechanical",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Stress, Physiological",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Time Factors",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Torsion, Mechanical",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Ventricular Dysfunction, Left",
"type": "DefinedTerm"
},
{
"inDefinedTermSet": "https://www.nlm.nih.gov/mesh/",
"name": "Ventricular Function, Left",
"type": "DefinedTerm"
}
],
"author": [
{
"affiliation": {
"alternateName": "Geisinger Health System",
"id": "https://www.grid.ac/institutes/grid.280776.c",
"name": [
"Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, USA",
"Department of Pediatrics, University of Kentucky, Lexington, KY, USA",
"Geisinger Health System, Institute for Advanced Application, 100 North Academy Avenue, 17822, Danville, PA, USA"
],
"type": "Organization"
},
"familyName": "Haggerty",
"givenName": "Christopher M.",
"id": "sg:person.0675424646.33",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0675424646.33"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "University of Kentucky",
"id": "https://www.grid.ac/institutes/grid.266539.d",
"name": [
"Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, USA",
"Department of Pediatrics, University of Kentucky, Lexington, KY, USA"
],
"type": "Organization"
},
"familyName": "Mattingly",
"givenName": "Andrea C.",
"id": "sg:person.01233470474.39",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01233470474.39"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "University of Kentucky",
"id": "https://www.grid.ac/institutes/grid.266539.d",
"name": [
"College of Medicine, University of Kentucky, Lexington, KY, USA"
],
"type": "Organization"
},
"familyName": "Kramer",
"givenName": "Sage P.",
"id": "sg:person.01051126674.84",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01051126674.84"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "Geisinger Health System",
"id": "https://www.grid.ac/institutes/grid.280776.c",
"name": [
"Department of Physiology, University of Kentucky, Lexington, KY, USA",
"Geisinger Health System, Institute for Advanced Application, 100 North Academy Avenue, 17822, Danville, PA, USA"
],
"type": "Organization"
},
"familyName": "Binkley",
"givenName": "Cassi M.",
"id": "sg:person.01117242074.86",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01117242074.86"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "Geisinger Health System",
"id": "https://www.grid.ac/institutes/grid.280776.c",
"name": [
"Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, USA",
"Department of Pediatrics, University of Kentucky, Lexington, KY, USA",
"Geisinger Health System, Institute for Advanced Application, 100 North Academy Avenue, 17822, Danville, PA, USA"
],
"type": "Organization"
},
"familyName": "Jing",
"givenName": "Linyuan",
"id": "sg:person.01243221522.48",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01243221522.48"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "Geisinger Health System",
"id": "https://www.grid.ac/institutes/grid.280776.c",
"name": [
"Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, USA",
"Department of Pediatrics, University of Kentucky, Lexington, KY, USA",
"Geisinger Health System, Institute for Advanced Application, 100 North Academy Avenue, 17822, Danville, PA, USA"
],
"type": "Organization"
},
"familyName": "Suever",
"givenName": "Jonathan D.",
"id": "sg:person.01052673253.25",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01052673253.25"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "University of Kentucky",
"id": "https://www.grid.ac/institutes/grid.266539.d",
"name": [
"Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA"
],
"type": "Organization"
},
"familyName": "Powell",
"givenName": "David K.",
"id": "sg:person.01307130560.37",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01307130560.37"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "University of Kentucky",
"id": "https://www.grid.ac/institutes/grid.266539.d",
"name": [
"Department of Biostatistics, University of Kentucky, Lexington, KY, USA"
],
"type": "Organization"
},
"familyName": "Charnigo",
"givenName": "Richard J.",
"id": "sg:person.014046404577.77",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.014046404577.77"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "University of Virginia",
"id": "https://www.grid.ac/institutes/grid.27755.32",
"name": [
"Departments of Biomedical Engineering and Radiology, University of Virginia, Charlottesville, VA, USA"
],
"type": "Organization"
},
"familyName": "Epstein",
"givenName": "Frederick H.",
"id": "sg:person.0751341013.41",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0751341013.41"
],
"type": "Person"
},
{
"affiliation": {
"alternateName": "Geisinger Health System",
"id": "https://www.grid.ac/institutes/grid.280776.c",
"name": [
"Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, USA",
"Department of Pediatrics, University of Kentucky, Lexington, KY, USA",
"Department of Physiology, University of Kentucky, Lexington, KY, USA",
"Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA",
"Geisinger Health System, Institute for Advanced Application, 100 North Academy Avenue, 17822, Danville, PA, USA"
],
"type": "Organization"
},
"familyName": "Fornwalt",
"givenName": "Brandon K.",
"id": "sg:person.01011604351.47",
"sameAs": [
"https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01011604351.47"
],
"type": "Person"
}
],
"citation": [
{
"id": "https://doi.org/10.1111/j.1540-8175.2008.00764.x",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1002063648"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1038/oby.2011.157",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1002081163"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1001/jama.298.17.2028",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1002128587"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.jacc.2009.04.061",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1003894883"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circimaging.109.862334",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1004134118"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circimaging.109.862334",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1004134118"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circimaging.109.862334",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1004134118"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1038/oby.2012.111",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1006528219"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/hypertensionaha.111.181867",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1006684269"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/hypertensionaha.111.181867",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1006684269"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1002/jmri.24350",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1006841013"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1371/journal.pone.0060931",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1008656454"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1002/mrm.25238",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1008977311"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.3791/1291",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1010571777"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.2337/db13-1763",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1011615836"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1152/ajpheart.00632.2004",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1013650403"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.jacc.2013.09.052",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1013993463"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1093/eurheartj/ehi506",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1013993475"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.echo.2011.12.018",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1014053712"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.jacc.2013.07.042",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1014977883"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.media.2008.06.016",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1015147415"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/01.cir.0000147184.13872.0f",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1018426460"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1136/heart.89.10.1152",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1020212475"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1371/journal.pone.0083174",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1020370892"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1152/physrev.00017.2007",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1020435862"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circulationaha.112.091215",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1021189633"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circulationaha.112.091215",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1021189633"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1001/jama.2012.39",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1023278055"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1371/journal.pone.0034268",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1024822229"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/atvbaha.112.248559",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1026595348"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/atvbaha.112.248559",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1026595348"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1148/radiol.2303021213",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1026763314"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1186/1532-429x-15-71",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1026803487",
"https://doi.org/10.1186/1532-429x-15-71"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1001/jama.2012.40",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1029553130"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.2337/diabetes.54.12.3530",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1030576614"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1136/heartjnl-2014-305538",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1031195841"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1186/1532-429x-15-109",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1036227366",
"https://doi.org/10.1186/1532-429x-15-109"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.jchf.2014.03.001",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1036952705"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/hypertensionaha.110.164178",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1037325331"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/hypertensionaha.110.164178",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1037325331"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circimaging.111.964627",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1040628313"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circimaging.111.964627",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1040628313"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1093/eurheartj/ehm241",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1040913554"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circulationaha.111.067801",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1041000363"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circulationaha.111.067801",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1041000363"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.yjmcc.2010.12.007",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1042564192"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/01.hyp.0000150857.39919.cb",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1042759591"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/01.hyp.0000150857.39919.cb",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1042759591"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.2337/db06-1596",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1043369548"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1152/ajpheart.00593.2012",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1044091229"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1152/ajpheart.00705.2011",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1045686640"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1161/circulationaha.108.832915",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1046824697"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1194/jlr.m003780",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1047750731"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1186/1532-429x-13-83",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1048776159",
"https://doi.org/10.1186/1532-429x-13-83"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1002/clc.20907",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1050465848"
],
"type": "CreativeWork"
},
{
"id": "sg:pub.10.1007/s00109-010-0720-4",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1050800287",
"https://doi.org/10.1007/s00109-010-0720-4"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1016/j.jacc.2003.10.062",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1052543967"
],
"type": "CreativeWork"
},
{
"id": "https://doi.org/10.1109/tmi.2006.884215",
"sameAs": [
"https://app.dimensions.ai/details/publication/pub.1061694941"
],
"type": "CreativeWork"
}
],
"datePublished": "2015-12",
"datePublishedReg": "2015-12-01",
"description": "BACKGROUND: Obesity is a risk factor for cardiovascular disease. There is evidence of impaired left ventricular (LV) function associated with obesity, which may relate to cardiovascular mortality, but some studies have reported no dysfunction. Ventricular function data are generally acquired under resting conditions, which could mask subtle differences and potentially contribute to these contradictory findings. Furthermore, abnormal ventricular mechanics (strains, strain rates, and torsion) may manifest prior to global changes in cardiac function (i.e., ejection fraction) and may therefore represent more sensitive markers of cardiovascular disease. This study evaluated LV mechanics under both resting and stress conditions with the hypothesis that the LV mechanical dysfunction associated with obesity is exacerbated with stress and manifested at earlier stages of disease compared to baseline.\nMETHODS: C57BL/6J mice were randomized to a high-fat or control diet (60\u00a0%, 10\u00a0%\u00a0kcal from fat, respectively) for varying time intervals (n\u2009=\u20097 - 10 subjects per group per time point, 100 total; 4 - 55\u00a0weeks on diet). LV mechanics were quantified under baseline (resting) and/or stress conditions (40\u00a0\u03bcg/kg/min continuous infusion of dobutamine) using cine displacement encoding with stimulated echoes (DENSE) with 7.4\u00a0ms temporal resolution on a 7\u00a0T Bruker ClinScan. Peak strain, systolic strain rates, and torsion were quantified. A linear mixed model was used with Benjamini-Hochberg adjustments for multiple comparisons.\nRESULTS: Reductions in LV peak longitudinal strain at baseline were first observed in the obese group after 42\u00a0weeks, with no differences in systolic strain rates or torsion. Conversely, reductions in longitudinal strain and circumferential and radial strain rates were seen under inotropic stress conditions after only 22\u00a0weeks on diet. Furthermore, stress cardiovascular magnetic resonance (CMR) evaluation revealed supranormal values of LV radial strain and torsion in the obese group early on diet, followed by later deficits.\nCONCLUSIONS: Differences in left ventricular mechanics in obese mice are exacerbated under stress conditions. Stress CMR demonstrated a broader array of mechanical dysfunction and revealed these differences at earlier time points. Thus, it may be important to evaluate cardiac function in the setting of obesity under stress conditions to fully elucidate the presence of ventricular dysfunction.",
"genre": "research_article",
"id": "sg:pub.10.1186/s12968-015-0180-7",
"inLanguage": [
"en"
],
"isAccessibleForFree": true,
"isFundedItemOf": [
{
"id": "sg:grant.2437926",
"type": "MonetaryGrant"
},
{
"id": "sg:grant.2684975",
"type": "MonetaryGrant"
},
{
"id": "sg:grant.2705214",
"type": "MonetaryGrant"
},
{
"id": "sg:grant.2675463",
"type": "MonetaryGrant"
},
{
"id": "sg:grant.3857644",
"type": "MonetaryGrant"
},
{
"id": "sg:grant.2501260",
"type": "MonetaryGrant"
}
],
"isPartOf": [
{
"id": "sg:journal.1030439",
"issn": [
"1548-7679",
"1879-2855"
],
"name": "Journal of Cardiovascular Magnetic Resonance",
"type": "Periodical"
},
{
"issueNumber": "1",
"type": "PublicationIssue"
},
{
"type": "PublicationVolume",
"volumeNumber": "17"
}
],
"name": "Left ventricular mechanical dysfunction in diet-induced obese mice is exacerbated during inotropic stress: a cine DENSE cardiovascular magnetic resonance study",
"pagination": "75",
"productId": [
{
"name": "readcube_id",
"type": "PropertyValue",
"value": [
"44b19d27c4701ed76ac9c33af706ada64a25746d18abb267f90131609bc388ca"
]
},
{
"name": "pubmed_id",
"type": "PropertyValue",
"value": [
"26310667"
]
},
{
"name": "nlm_unique_id",
"type": "PropertyValue",
"value": [
"9815616"
]
},
{
"name": "doi",
"type": "PropertyValue",
"value": [
"10.1186/s12968-015-0180-7"
]
},
{
"name": "dimensions_id",
"type": "PropertyValue",
"value": [
"pub.1014419393"
]
}
],
"sameAs": [
"https://doi.org/10.1186/s12968-015-0180-7",
"https://app.dimensions.ai/details/publication/pub.1014419393"
],
"sdDataset": "articles",
"sdDatePublished": "2019-04-10T16:42",
"sdLicense": "https://scigraph.springernature.com/explorer/license/",
"sdPublisher": {
"name": "Springer Nature - SN SciGraph project",
"type": "Organization"
},
"sdSource": "s3://com-uberresearch-data-dimensions-target-20181106-alternative/cleanup/v134/2549eaecd7973599484d7c17b260dba0a4ecb94b/merge/v9/a6c9fde33151104705d4d7ff012ea9563521a3ce/jats-lookup/v90/0000000001_0000000264/records_8669_00000511.jsonl",
"type": "ScholarlyArticle",
"url": "http://link.springer.com/10.1186%2Fs12968-015-0180-7"
}
]Download the RDF metadata as: json-ld nt turtle xml License info
JSON-LD is a popular format for linked data which is fully compatible with JSON.
curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1186/s12968-015-0180-7'
N-Triples is a line-based linked data format ideal for batch operations.
curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1186/s12968-015-0180-7'
Turtle is a human-readable linked data format.
curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1186/s12968-015-0180-7'
RDF/XML is a standard XML format for linked data.
curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1186/s12968-015-0180-7'
This table displays all metadata directly associated to this object as RDF triples.
393 TRIPLES
21 PREDICATES
99 URIs
42 LITERALS
30 BLANK NODES