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Commun Biol ; 7(1): 356, 2024 Mar 22.
Artículo en Inglés | MEDLINE | ID: mdl-38519536

RESUMEN

Lean patients with NAFLD may develop cardiac complications independently of pre-existent metabolic disruptions and comorbidities. To address the underlying mechanisms independent of the development of obesity, we used a murine model of hepatic mitochondrial deficiency. The liver-heart axis was studied as these mice develop microvesicular steatosis without obesity. Our results unveil a sex-dependent phenotypic remodeling beyond liver damage. Males, more than females, show fasting hypoglycemia and increased insulin sensitivity. They exhibit diastolic dysfunction, remodeling of the circulating lipoproteins and cardiac lipidome. Conversely, females do not manifest cardiac dysfunction but exhibit cardiometabolic impairments supported by impaired mitochondrial integrity and ß-oxidation, remodeling of circulating lipoproteins and intracardiac accumulation of deleterious triglycerides. This study underscores metabolic defects in the liver resulting in significant sex-dependent cardiac abnormalities independent of obesity. This experimental model may prove useful to better understand the sex-related variability, notably in the heart, involved in the progression of lean-NAFLD.


Asunto(s)
Enfermedad del Hígado Graso no Alcohólico , Humanos , Masculino , Femenino , Animales , Ratones , Enfermedad del Hígado Graso no Alcohólico/genética , Caracteres Sexuales , Modelos Animales de Enfermedad , Obesidad/metabolismo , Lipoproteínas
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