title: Intravenous administration of bone marrow-derived multipotent mesenchymal stromal cells has a neutral effect on obesity-induced diabetic cardiomyopathy.
abstract: Obesity is a major global health issue. Obese patients develop metabolic syndrome, which is a cluster of clinical features characterized by insulin resistance and dyslipidemia. Its cardiac manifestation, diabetic cardiomyopathy, leads to heart failure. Bone marrow-derived multipotent mesenchymal stromal cells, also referred to as mesenchymal stem cells (MSC) are envisioned as a therapeutic tool not only for cardiovascular diseases but also for other degenerative conditions. Our aim was to evaluate whether the intravenous administration of MSC modifies cardiac dysfunction in obese mice. To this end, C57BL/6 mice were fed a regular (normal) or high-fat diet (obese). Obese animals received the vehicle (obese), a single dose (obese + 1x MSC) or three doses (obese + 3x MSC) of 0.5x10(6) syngeneic MSC. Two to three months following MSC administration, cardiac function was assessed by cardiac catheterization, at basal condition and after a pharmacological stress. Compared to normal mice, obese mice presented hyperglycemia, hyperinsulinemia, hypercholesterolemia and cardiac dysfunction after stress condition. Exogenous MSC neither improved nor impaired this cardiac dysfunction. Thus, intravenous administration of MSC has neutral effect on obesity-induced diabetic cardiomyopathy.
authors.affiliation: Instituto de Ciencias, Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile, scalligaris@udd.cl.
authors.forename: Sebastián D
authors.initials: SD
authors.lastname: Calligaris
authors.affiliation: Instituto de Ciencias, Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile, scalligaris@udd.cl.
authors.forename: Paulette
authors.initials: P
authors.lastname: Conget
mesh_terms: D061605:Administration, Intravenous; D000818:Animals; D058065:Diabetic Cardiomyopathies / Q000209:etiology / Q000628:therapy*; D059305:Diet, High-Fat; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation / Q000379:methods*; D059630:Mesenchymal Stem Cells; D051379:Mice; D008810:Mice, Inbred C57BL; D009765:Obesity / Q000150:complications*