Glucose metabolism and cardiac hypertrophy
Key result
Increased glucose metabolism in the adult hypertrophied heart is not harmful and can be beneficial when providing sufficient fuel for oxidative metabolism.
Population
Hypertrophied hearts (animal models, transgenic mice)
Design
Review
Authors
Discussion
Loading...
Member takes
Implication
May support targeting oxidative glucose use in hypertrophy; leaves open clinical outcome benefits.
Key Points
- To review the mechanisms underlying altered glucose metabolism during cardiac hypertrophy and examine whether shifting substrate preference offers therapeutic benefit.
- Synthesized molecular and metabolic findings from animal models and transgenic mouse studies of cardiac hypertrophy.
- Evaluated pharmacological interventions targeting cardiac substrate preference, energy sensing via AMPK, and oxidative pathways.
- Hypertrophied hearts down-regulate fatty acid oxidation and oxidative phosphorylation while activating AMPK, driving increased glucose uptake, glycolysis, the pentose phosphate pathway, and anaplerosis.
- Increased glucose utilization in adult hearts acts adaptively rather than detrimentally when it sustains sufficient fuel for oxidative metabolism.
- Enhancing mitochondrial oxidative capacity and efficiency, rather than altering substrate selection alone, represents the primary therapeutic target for metabolic heart disease.
Structured PICO
P
Population
Hypertrophied hearts (animal models, transgenic mice)
I
Intervention
Transgenic mouse models and pharmacological compounds altering substrate preference
In cardiac hypertrophy, increased reliance on glucose is not inherently harmful and may be beneficial if it supports oxidative metabolism, suggesting metabolic therapies should target oxidative capacity.
Cite This Study
Kolwicz et al. (2011) conducted a review in Cardiac hypertrophy. Metabolic therapies targeting glucose metabolism was evaluated. Increased glucose metabolism in the adult hypertrophied heart is not harmful and can be beneficial when providing sufficient fuel for oxidative metabolism.