Subgroup differences in 'brain-type' transferrin and α-synuclein in Parkinson's disease and multiple system atrophy

Akioh Yoshihara, Masahiko Fukatsu, Kyoka Hoshi, Hiromi Ito, Kenneth Nollet, Yoshiki Yamaguchi, Ryotaro Ishii, Takahiko Tokuda, Masakazu Miyajima, Hajime Arai, Takeo Kato, Katsutoshi Furukawa, Hiroyuki Arai, Akio Kikuchi, Atsushi Takeda, Yoshikazu Ugawa, Yasuhiro Hashimoto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Two transferrin (Tf) glycan-isoforms were previously found in cerebrospinal fluid (CSF); one appears to be derived from serum (Tf-2) and the other from choroid plexus, a CSF-producing tissue (Tf-1). To analyse metabolic differences associated with the two isoforms, their ratio (Tf-2/Tf-1) was defined as the Tf index. Here we report that Tf indices of patients with tauopathies including Alzheimer's disease (2.29 + 0.64) were similar to those of neurological controls (2.07 + 0.87) (P = 0.147). In contrast, Tf indices with Parkinson's disease (PD, 3.38 ± 1.87) and multiple system atrophy (MSA, 3.15 ± 1.72) were higher than those of the controls (2.07 ± 0.87), the P-values being < 0.001 and 0.024, respectively. Tf indices of PD and MSA did not appear to be normally distributed. Indeed, detrended normal Quantile-Quantile plot analysis revealed the presence of an independent subgroup showing higher Tf indices in PD and MSA. The subgroup of PD showed higher levels of CSF α-synuclein (38.3 ± 17.8 ng/ml) than the rest (25.3 ± 11.3 ng/ml, P = 0.012). These results suggest that PD (and MSA) includes two subgroups, which show different metabolism of CSF transferrin and α-synuclein.

Original languageEnglish
Pages (from-to)87-91
Number of pages5
JournalJournal of biochemistry
Volume160
Issue number2
DOIs
Publication statusPublished - 2016 Aug 1

Keywords

  • Parkinson’s disease
  • cerebrospinal fluid
  • synucleinopathy
  • transferring
  • α-synuclein

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology

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    Yoshihara, A., Fukatsu, M., Hoshi, K., Ito, H., Nollet, K., Yamaguchi, Y., Ishii, R., Tokuda, T., Miyajima, M., Arai, H., Kato, T., Furukawa, K., Arai, H., Kikuchi, A., Takeda, A., Ugawa, Y., & Hashimoto, Y. (2016). Subgroup differences in 'brain-type' transferrin and α-synuclein in Parkinson's disease and multiple system atrophy. Journal of biochemistry, 160(2), 87-91. https://doi.org/10.1093/jb/mvw015