Key result
In a rabbit model, phenol-induced denervation led to hyperinnervation in regions with seemingly normal 123I-MIBG uptake, contributing to increased ARI dispersion and VT/VF inducibility.
Why the study?
Does 123I-MIBG imaging identify hyperinnervation and correlate with arrhythmogenesis in a phenol-induced denervated rabbit heart model?
Population
20 New Zealand white rabbits treated with phenol or sham
Comparison
Phenol application to induce denervation… vs Sham treatment
Design
Preclinical
Follow-up
4 weeks
Authors
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May flag arrhythmogenic hyperinnervation in denervated hearts; leaves open whether MIBG mapping refines risk stratification.
Does 123I-MIBG imaging identify hyperinnervation and correlate with arrhythmogenesis in a phenol-induced denervated rabbit heart model?
In a rabbit model, regions with seemingly normal 123I-MIBG uptake in denervated hearts exhibit hyperinnervation and contribute to electrical instability and arrhythmia risk.
Amino et al. (2017) studied Denervated heart and arrhythmia risk (n=20). Phenol application vs. Sham was evaluated on Sympathetic innervation and electrophysiological instability (ARI dispersion, VT/VF inducibility). In a rabbit model, phenol-induced denervation led to hyperinnervation in regions with seemingly normal 123I-MIBG uptake, contributing to increased ARI dispersion and VT/VF inducibility.
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