Myocardial 123metaiodobenzylguanidine uptake in genetic Parkinson's disease

Mov Disord. 2008 Jan;23(1):21-7. doi: 10.1002/mds.21701.

Abstract

Myocardial (123)Metaiodobenzylguanidine (MIBG) enables the assessment of postganglionic sympathetic cardiac innervation. MIBG uptake is decreased in nearly all patients with Parkinson's disease (PD). Our objective was to evaluate MIBG uptake in patients with genetic PD. We investigated MIBG uptake in 14 patients with PD associated with mutations in different genes (Parkin, DJ-1, PINK1, and leucine-rich repeat kinase 2 -LRRK2), in 15 patients with idiopathic PD, and 10 control subjects. The myocardial MIGB uptake was preserved in 3 of the 4 Parkin-associated Parkinsonisms, in 1 of the 2 patients with DJ-1 mutations, in 1 of the 2 brothers with PINK1 mutations, in 3 of the 6 unrelated patients with Gly2019Ser mutation in the LRRK2 gene, whereas it was impaired in all patients with idiopathic PD. MIBG was preserved in all control subjects. Our study shows that myocardial MIGB uptake was normal in 8 of 14 patients with genetic PD, suggesting that cardiac sympathetic denervation occurs less frequently in genetic PD than in idiopathic PD. Our findings also demonstrate that MIGB uptake has a heterogeneous pattern in genetic PD, because it was differently impaired in patients with different mutations in the same gene or with the same gene mutation.

Publication types

  • Comparative Study

MeSH terms

  • 3-Iodobenzylguanidine / pharmacokinetics*
  • Adult
  • DNA Mutational Analysis
  • Diagnosis, Differential
  • Female
  • Galvanic Skin Response / physiology
  • Genotype
  • Humans
  • Intracellular Signaling Peptides and Proteins / blood
  • Intracellular Signaling Peptides and Proteins / genetics
  • Leucine-Rich Repeat Serine-Threonine Protein Kinase-2
  • Male
  • Middle Aged
  • Movement Disorders / diagnosis
  • Movement Disorders / epidemiology
  • Myocardium / metabolism*
  • Oncogene Proteins / blood
  • Oncogene Proteins / genetics
  • Parkinson Disease / diagnosis*
  • Parkinson Disease / epidemiology
  • Parkinson Disease / genetics*
  • Parkinsonian Disorders / diagnosis*
  • Parkinsonian Disorders / epidemiology
  • Parkinsonian Disorders / genetics*
  • Point Mutation / genetics*
  • Promoter Regions, Genetic
  • Protein Deglycase DJ-1
  • Protein Kinases / blood
  • Protein Kinases / genetics
  • Protein Serine-Threonine Kinases / blood
  • Protein Serine-Threonine Kinases / genetics
  • Radiopharmaceuticals / pharmacokinetics*
  • Severity of Illness Index
  • Surveys and Questionnaires
  • Tomography, Emission-Computed, Single-Photon / methods
  • Ubiquitin-Protein Ligases / blood
  • Ubiquitin-Protein Ligases / genetics

Substances

  • Intracellular Signaling Peptides and Proteins
  • Oncogene Proteins
  • Radiopharmaceuticals
  • 3-Iodobenzylguanidine
  • Ubiquitin-Protein Ligases
  • parkin protein
  • Protein Kinases
  • LRRK2 protein, human
  • Leucine-Rich Repeat Serine-Threonine Protein Kinase-2
  • PTEN-induced putative kinase
  • Protein Serine-Threonine Kinases
  • PARK7 protein, human
  • Protein Deglycase DJ-1