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S-methylation in Parkinson's disease

Y Nakagawa-Hattori1, T Hattori, T Kondo

  • 1Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan.

Neurology
|December 1, 1995
PubMed

Insights

Thiolmethyltransferase (TMT) activity was measured in Parkinson's disease (PD) patients and controls. This study found no significant difference in TMT activity, suggesting low S-methylation capacity is not a PD risk factor in Japanese individuals.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Genetics

Background:

  • Previous research suggested a link between reduced thiolmethyltransferase (TMT) activity and Parkinson's disease (PD).
  • S-methylation capacity has been hypothesized as a potential risk factor for PD development.

Purpose of the Study:

  • To investigate thiolmethyltransferase (TMT) activity in red blood cell (RBC) membranes from Parkinson's disease (PD) patients and controls.
  • To determine if reduced TMT activity is associated with PD risk in a Japanese cohort.

Main Methods:

  • Assay of thiolmethyltransferase (TMT) activity in red blood cell (RBC) membrane preparations.
  • Comparison of TMT activity levels between patients with Parkinson's disease (PD), symptomatic parkinsonism, and normal controls.

Main Results:

  • No significant decrease in thiolmethyltransferase (TMT) activity was observed in Parkinson's disease (PD) patients compared to normal controls.
  • TMT activity levels in patients with symptomatic parkinsonism were also comparable to controls.
  • These findings indicate that low S-methylation capacity is unlikely to be a significant risk factor for PD in the studied Japanese population.

Conclusions:

  • The study challenges previous findings regarding TMT activity in Parkinson's disease (PD).
  • Reduced S-methylation capacity does not appear to be a contributing risk factor for PD in Japanese patients.
  • Further research may be needed to explore other potential etiological factors in PD.

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