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September 14, 2015AJP Heart and Circulatory PhysiologyOpen Access

Effects of nitrite infusion on skeletal muscle vascular control during exercise in rats with chronic heart failure

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Key result

Nitrite infusion increased total hindlimb skeletal muscle vascular conductance during exercise in rats with chronic heart failure (0.93 vs 0.85 ml·min(-1)·100 g(-1)·mmHg(-1); P<0.05).

Why the study?

Does nitrite infusion improve skeletal muscle blood flow and vascular conductance during exercise in rats with chronic heart failure?

Population

Adult male Sprague-Dawley rats with moderate chronic heart failure induced by coronary artery ligation.

Comparison

Nitrite infusion during treadmill exercise. vs Treadmill exercise without NO2- infusion.

Design

Preclinical

Authors

AGAngela A. GleanSFScott K. FergusonCHClark T. Holdsworth

Discussion

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Overview

Should not change HF practice; extends preclinical evidence for nitrite during exercise.

Structured PICO

Does nitrite infusion improve skeletal muscle blood flow and vascular conductance during exercise in rats with chronic heart failure?

P
Population
Adult male Sprague-Dawley rats with induced chronic heart failure evaluated during treadmill exercise.
I
Intervention
Nitrite (NO2-) infusion during treadmill exercise (20 m/min, 5% incline).
C
Comparator
Treadmill exercise without NO2- infusion.
O
Outcome
Skeletal muscle blood flow (BF) and vascular conductance (VC) during treadmill exercise.surrogate

Main Result

Absolute Event Rate: 0.93% vs 0.85%

p-value: p=<0.05

Nitrite infusion augments skeletal muscle vascular conductance during exercise in a rat model of chronic heart failure, suggesting a potential targeted therapy for vascular dysfunction in CHF.

Cite This Study

Glean et al. (2015) studied Chronic heart failure. Nitrite (NO2-) infusion vs. Without NO2- infusion was evaluated on Total hindlimb skeletal muscle vascular conductance (VC) (p=<0.05). Nitrite infusion increased total hindlimb skeletal muscle vascular conductance during exercise in rats with chronic heart failure (0.93 vs 0.85 ml·min(-1)·100 g(-1)·mmHg(-1); P<0.05).

synapsesocial.com/papers/6a7b97b7c2a640f0bcdf775bhttps://doi.org/10.1152/ajpheart.00421.2015
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Short-Term Intravenous Sodium Nitrite Infusion Improves Cardiac and Pulmonary Hemodynamics in Heart Failure Patients2015 · 35 citations
  2. 2Dietary nitrate supplementation enhances exercise performance in peripheral arterial disease2011 · 317 citations
  3. 3Nitrite supplementation reverses vascular endothelial dysfunction and large elastic artery stiffness with aging2011 · 216 citations
  4. 4Nitric Oxide Synthase Inhibition Reduces Glucose Uptake During Exercise in Individuals With Type 2 Diabetes More Than in Control Subjects2002 · 159 citations
  5. 5Determinants of Platelet Responsiveness to Nitric Oxide in Patients with Chronic Heart Failure2003 · 34 citations