Volume 26, Issue 9 pp. 1205-1211
Original Article

Longitudinal changes in 18F-THK5351 positron emission tomography in corticobasal syndrome

M. Ezura

M. Ezura

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

These authors contributed equally to this work.

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A. Kikuchi

Corresponding Author

A. Kikuchi

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

These authors contributed equally to this work.

Correspondence: A. Kikuchi, Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan (tel.: +81-22-717-7189; fax: +81-22-717-7192; e-mail: [email protected])

and

N. Okamura, Division of Pharmacology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan (tel.: +81-22-290-8721; fax: +81-22-290-8748; e-mail: [email protected]).

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A. Ishiki

A. Ishiki

Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan

These authors contributed equally to this work.

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N. Okamura

Corresponding Author

N. Okamura

Division of Pharmacology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan

Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan

These authors contributed equally to this work.

Correspondence: A. Kikuchi, Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan (tel.: +81-22-717-7189; fax: +81-22-717-7192; e-mail: [email protected])

and

N. Okamura, Division of Pharmacology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan (tel.: +81-22-290-8721; fax: +81-22-290-8748; e-mail: [email protected]).

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T. Hasegawa

T. Hasegawa

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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R. Harada

R. Harada

Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan

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S. Watanuki

S. Watanuki

Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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Y. Funaki

Y. Funaki

Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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K. Hiraoka

K. Hiraoka

Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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T. Baba

T. Baba

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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N. Sugeno

N. Sugeno

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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R. Oshima

R. Oshima

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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S. Yoshida

S. Yoshida

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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J. Kobayashi

J. Kobayashi

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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M. Kobayashi

M. Kobayashi

Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Japan

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O. Tano

O. Tano

Department of Neurology, Sendai Medical Center, Sendai, Japan

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I. Nakashima

I. Nakashima

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Japan

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S. Mugikura

S. Mugikura

Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan

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R. Iwata

R. Iwata

Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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Y. Taki

Y. Taki

Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan

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K. Furukawa

K. Furukawa

Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan

Division of Community of Medicine, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan

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H. Arai

H. Arai

Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan

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S. Furumoto

S. Furumoto

Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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M. Tashiro

M. Tashiro

Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

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K. Yanai

K. Yanai

Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan

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Y. Kudo

Y. Kudo

Division of Neuroimaging, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan

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A. Takeda

A. Takeda

Department of Neurology, National Hospital Organization, Sendai Nishitaga Hospital, Sendai, Japan

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M. Aoki

M. Aoki

Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan

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First published: 13 April 2019
Citations: 15

Abstract

Background and purpose

Corticobasal syndrome (CBS) is pathologically characterized by tau deposits in neuronal and glial cells and by reactive astrogliosis. In several neurodegenerative disorders, 18F-THK5351 has been observed to bind to reactive astrocytes expressing monoamine oxidase B. In this study, the aim was to investigate the progression of disease-related pathology in the brains of patients with CBS using positron emission tomography with 18F-THK5351.

Methods

Baseline and 1-year follow-up imaging were acquired using magnetic resonance imaging and positron emission tomography with 18F-THK5351 in 10 subjects: five patients with CBS and five age-matched normal controls (NCs).

Results

The 1-year follow-up scan images revealed that 18F-THK5351 retention had significantly increased in the superior parietal gyrus of the patients with CBS compared with the NCs. The median increases in 18F-THK5351 accumulation in the patients with CBS were 6.53% in the superior parietal gyrus, 4.34% in the precentral gyrus and 4.33% in the postcentral gyrus. In contrast, there was no significant increase in the regional 18F-THK5351 retention in the NCs.

Conclusions

Longitudinal increases in 18F-THK5351 binding can be detected over a short interval in the cortical sites of patients with CBS. A monoamine oxidase B binding radiotracer could be useful in monitoring the progression of astrogliosis in CBS.

Disclosure of conflicts of interest

N.O., S.F. and Y.K. received research grants from GE Healthcare. Y.K. received research grants from Sumitomo Electric Industries. N.O. and Y.K. own stock in Clino Ltd.

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