What is the clinical evidence from this study?

Study design: Other. Population: Myocardial ischemia (n=28). Intervention: Pravastatin vs. Control. Primary outcome: Decreases in ATP and intracellular pH (pHi), and increase in inorganic phosphate (Pi) (p=<0.01).

What does this research mean for the field?

Pravastatin preserves myocardial energy metabolism during ischemia through nitric oxide- and cardiac ATP-sensitive K+ channel-dependent mechanisms. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

January 1, 2001Hypertension ResearchOpen Access

Role of Cardiac ATP-Sensitive K+ Channels Induced by HMG CoA Reductase Inhibitor in Ischemic Rabbit Hearts.

Q: What are the key findings of this study?

Pravastatin significantly inhibited the decreases in ATP and intracellular pH and the increase in inorganic phosphate during myocardial ischemia compared to control (p<0.01).

Q: What does this research mean for the field?

Pravastatin preserves myocardial energy metabolism during ischemia through nitric oxide- and cardiac ATP-sensitive K+ channel-dependent mechanisms. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

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Key result

Pravastatin preserves ATP and intracellular pH and limits inorganic phosphate during myocardial ischemia versus control.

P<0.01
n=28

Why the study?

The cellular mechanisms by which HMG-CoA reductase inhibitors protect the myocardium against ischemic injury have not yet been characterized.

Does pravastatin improve myocardial energy metabolism during ischemia in isolated rabbit hearts?

Comparison

Pravastatin treatment with or without glibenclamide or L-NAME vs control

Design

Experimental study with 4 groups of 7 hearts each

Authors

HKHitoshi KawabataKindai University TRTeruhiko RyomotoKindai University KIKinji IshikawaKindai University

Discussion

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Implication

Hypothesis-generating for pravastatin in ischemic myocardial protection; clinical trials needed before adoption.

Structured PICO

Does pravastatin improve myocardial energy metabolism during ischemia in isolated rabbit hearts?

Population

28 isolated rabbit hearts subjected to 45 minutes of continuous normothermic global ischemia to evaluate the cardioprotective mechanisms of pravastatin.

Intervention

Pravastatin administered beginning 60 min prior to global ischemia (with or without glibenclamide or L-NAME)

Comparator

Control group (no pravastatin)

Outcome

Myocardial energy metabolism (adenosine triphosphate [ATP], intracellular pH [pHi], and inorganic phosphate [Pi]) during ischemia measured by 31P-NMRsurrogate

Main Result

p-value: p=<0.01

Pravastatin protects myocardial energy metabolism during ischemia via a mechanism dependent on K(ATP) channels and nitric oxide.

Cite This Study

Kawabata et al. (2001) studied Myocardial ischemia (n=28). Pravastatin vs. Control was evaluated on Decreases in ATP and intracellular pH (pHi), and increase in inorganic phosphate (Pi) (p=<0.01). Pravastatin significantly inhibited the decreases in ATP and intracellular pH and the increase in inorganic phosphate during myocardial ischemia compared to control (p<0.01).

synapsesocial.com/papers/6aa90244266cc8089870f9ab https://doi.org/10.1291/hypres.24.573

Topics

Statin therapy

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Role of Cardiac ATP-Sensitive K+ Channels Induced by HMG CoA Reductase Inhibitor in Ischemic Rabbit Hearts.

Discussion

Member takes

Implication

Structured PICO

Main Result

Cite This Study

Topics

Role of Cardiac ATP-Sensitive K+ Channels Induced by HMG CoA Reductase Inhibitor in Ischemic Rabbit Hearts.

Discussion

Member takes

Implication

Structured PICO

Main Result

Cite This Study

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Topics

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