Dapagliflozin Suppresses ER Stress and Improves Subclinical Myocardial Function in Diabetes: From Bedside to Bench.
Diabetes
; 70(1): 262-267, 2021 01.
Article
em En
| MEDLINE
| ID: mdl-33115828
ABSTRACT
Dapagliflozin (DAPA), a sodium-glucose cotransporter 2 inhibitor, is approved for treatments of patients with diabetes. The DAPA-HF (Dapagliflozin and Prevention of Adverse Outcomes in Heart Failure) trial disclosed DAPA's benefits in symptomatic heart failure, but the underlying mechanism remains largely unknown. In this longitudinal and prospective study, we investigated changes of left ventricular functions including speckle tracking in patients with diabetes who were free from symptomatic heart failure post-DAPA treatment. Using a rat model with streptozotocin-induced diabetes, we measured the effects of DAPA on myocardial function. In patients with diabetes, following 6 months of DAPA treatment, despite no significant changes in left ventricular ejection fraction, the diastolic function and longitudinal strain improved. Likewise, compared with control, the diabetic rat heart developed pronounced fibrosis and a decline in strain and overall hemodynamics, all of which were mitigated by DAPA treatment. In contrast, despite insulin exerting a glucose-lowering effect, it failed to improve myocardial function and fibrosis. In our in vitro study, under high glucose cardiomyocytes showed significant activations of apoptosis, reactive oxygen species, and endoplasmic reticulum (ER) stress-associated proteins, which were attenuated by the coincubation of DAPA. Mechanistically, DAPA suppressed ER stress, reduced myocardial fibrosis, and improved overall function. The results can lead to further improvement in management of left ventricular function in patients with diabetes.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Compostos Benzidrílicos
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Função Ventricular Esquerda
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Diabetes Mellitus Experimental
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Diabetes Mellitus Tipo 2
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Estresse do Retículo Endoplasmático
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Inibidores do Transportador 2 de Sódio-Glicose
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Glucosídeos
Tipo de estudo:
Observational_studies
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Risk_factors_studies
Limite:
Aged
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Animals
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Diabetes
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Taiwan