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- W1993825565 abstract "Glucagon-like peptide 1 (GLP-1) agonists improve myocardial function and insulin sensitivity in the setting of chronic heart failure. Endogenously produced GLP-1 peptide (7-36) is rapidly cleaved by dipeptidyl peptidase 4 (DPP4) to the 9-36 peptide, which lacks anti-hyperglycemic activity. To elucidate the effect of increased endogenous GLP-1 during heart failure progression, the DPP4 inhibitor saxagliptin or vehicle was administered by daily oral gavage to female TG9 mice, a transgenic model of dilated cardiomyopathy, starting at day of life 42, just prior to the development of detectable contractile dysfunction. Saxagliptin treatment inhibited DPP4 activity >90% and increased GLP-1 levels 4-fold following a 2 gm/kg glucose load but did not affect fasting GLP-1 levels. There was no difference in food intake or body weight between groups. At 56 days of age, oral glucose tolerance was improved in saxagliptin-versus vehicle-treated animals (AUC0-120 1340 ± 46 and 1501 ± 43 min·mmol/L, respectively, p<0.015). In contrast to the effect of a GLP-1 agonist in TG9 mice, saxagliptin had no effect on survival (80.7 ± 4.3 days) compared to vehicle-treated mice (79.6 ± 3.6 days, p = 0.46). Taken together, these data indicate that improvement in glucose tolerance is not sufficient to improve survival. Future efforts to confirm these findings in additional models of heart failure are warranted." @default.
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- W1993825565 date "2012-12-01" @default.
- W1993825565 modified "2023-10-10" @default.
- W1993825565 title "Saxagliptin improves glucose tolerance but not survival in a murine model of dilated cardiomyopathy" @default.
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- W1993825565 doi "https://doi.org/10.1097/xce.0b013e32835bfb24" @default.
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