Key result
In Zucker Diabetic Fatty rat hearts, the baseline PCr to ATP ratio was significantly lower compared with matched controls (1.71 vs. 2.26, P < 0.01), indicating a cardiac energy deficit.
Why the study?
Does dobutamine stress alter creatine kinase reaction kinetics differently in type II diabetic rat hearts compared to controls?
Population
Zucker Diabetic Fatty (ZDF) rat hearts, a type II diabetes research model
Comparison
Dobutamine administration (stress) vs Matched non-diabetic controls
Design
Preclinical
Authors
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May indicate preserved ATP supply via CK compensation under stress in diabetic rats; leaves open translation to human cardiomyopathy.
Does dobutamine stress alter creatine kinase reaction kinetics differently in type II diabetic rat hearts compared to controls?
Absolute Event Rate: 1.71% vs 2.26%
p-value: p=< 0.01
Diabetic myocardium exhibits a reduced PCr/ATP ratio indicating an energy deficit, but a compensatory elevation of the forward CK reaction rate maintains ATP supply even under dobutamine stress.
Bashir et al. (2015) studied Type II diabetes. Type II diabetes (ZDF rat model) vs. Matched controls was evaluated on Baseline PCr to ATP ratio (PCr/ATP) (p=< 0.01). In Zucker Diabetic Fatty rat hearts, the baseline PCr to ATP ratio was significantly lower compared with matched controls (1.71 vs. 2.26, P < 0.01), indicating a cardiac energy deficit.
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