What question did this study set out to answer?

To investigate the physiological effects and mechanisms of nitroxyl anion on cardiac contractility in vivo.

August 21, 2001Proceedings of the National Academy of Sciences

Nitroxyl anion exerts redox-sensitive positive cardiac inotropy in vivo by calcitonin gene-related peptide signaling

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Why the study?

Does the nitroxyl anion generator Angeli's salt improve cardiac contractility and alter vascular responses in conscious dogs?

Population

Conscious chronically instrumented dogs

Comparison

Angeli's salt, a nitroxyl anion generator vs Diethylamine/NO, and AS co-administered with…

Design

Preclinical

Authors

NPNazareno PaolocciHeart Failure & Transplant WSWalter F. SaavedraJohns Hopkins University KMKatrina M. MirandaUniversity of Arizona

Discussion

Member takes

Implication

Nitroxyl anion effects merit HF model testing; leaves open translation to human systolic or diastolic dysfunction.

Key Points

To investigate the physiological effects and mechanisms of nitroxyl anion on cardiac contractility in vivo.
Nitroxyl anion generator Angeli's salt administered to conscious dogs
Pressure-dimension analysis used to assess cardiac responses
CGRP receptor antagonist CGRP(8-37) applied to evaluate signaling pathways
Nitroxyl anion significantly enhanced left ventricular contractility without altering arterial resistance (p<0.05)
Induced venodilation and reduced diastolic pressure without systemic vasodilation
Effect diminished with N-acetyl-l-cysteine co-infusion, indicating redox-sensitive mechanism

Structured PICO

Does the nitroxyl anion generator Angeli's salt improve cardiac contractility and alter vascular responses in conscious dogs?

Population

Conscious chronically instrumented dogs

Intervention

Angeli's salt (AS, Na2N2O3), a nitroxyl anion (NO-) generator

Comparator

Diethylamine/NO (pure NO donor), and AS co-administered with various blockers (hexamethonium, N-acetyl-l-cysteine, CGRP(8-37))

Outcome

Left ventricular contractility and peripheral vascular responses (cardiac preload volume, diastolic pressure, arterial resistance)surrogate

Nitroxyl anion acts as a redox-sensitive positive inotrope and selective venodilator via CGRP signaling, suggesting potential utility in heart failure with elevated venous filling pressures.

Cite This Study

Paolocci et al. (2001) studied this question.

synapsesocial.com/papers/6a703937e5469ee92be0fa4c https://doi.org/10.1073/pnas.181191198

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Nitroxyl anion exerts redox-sensitive positive cardiac inotropy in vivo by calcitonin gene-related peptide signaling

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Nitroxyl anion exerts redox-sensitive positive cardiac inotropy in vivo by calcitonin gene-related peptide signaling

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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