Sex-Dependent Effects of theAPOEɛ4 Allele on Behavioral Traits and White Matter Structures in Young Adults

Author:

Takeuchi Hikaru1ORCID,Tomita Hiroaki23,Browne Ryan4,Taki Yasuyuki56,Kikuchi Yoshie3,Ono Chiaki3,Yu Zhiqian3,Nouchi Rui478,Yokoyama Ryoichi9,Kotozaki Yuka10,Nakagawa Seishu1112,Sekiguchi Atsushi513,Iizuka Kunio2,Hanawa Sugiko11,Araki Tsuyoshi14,Miyauchi Carlos Makoto4,Sakaki Kohei4,Nozawa Takayuki15,Ikeda Shigeyuki16,Yokota Susumu17,Magistro Daniele18,Sassa Yuko1,Kawashima Ryuta1416

Affiliation:

1. Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan

2. Department of Psychiatry, Graduate School of Medicine, Tohoku University, Sendai 980-8575, Japan

3. Department of Disaster Psychiatry, International Research Institute of Disaster Science, Tohoku University, Sendai 980-8575, Japan

4. Department of Advanced Brain Science, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan

5. Division of Medical Neuroimaging Analysis, Department of Community Medical Supports, Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8575, Japan

6. Department of Radiology and Nuclear Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan

7. Department of Cognitive Health Science, IDAC, Tohoku University, Sendai 980-8575, Japan

8. Smart Aging Research Center, Tohoku University, Sendai 980-8575, Japan

9. School of Medicine, Kobe University, Kobe 650-0017, Japan

10. Division of Clinical research, Medical-Industry Translational Research Center, Fukushima Medical University School of Medicine, Fukushima 960-1925, Japan

11. Department of Human Brain Science, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan

12. Division of Psychiatry, Tohoku Medical and Pharmaceutical University, Sendai 983-8536, Japan

13. Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 187-8553, Japan

14. ADVANTAGE Risk Management Co., Ltd. , Tokyo 153-0051, Japan

15. Research Institute for the Earth Inclusive Sensing, Tokyo Institute of Technology, Tokyo 152-8550, Japan

16. Department of Ubiquitous Sensing, Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan

17. Division for Experimental Natural Science, Faculty of Arts and Science, Kyushu University, Fukuoka 819-0385, Japan

18. Department of Sport Science, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK

Abstract

AbstractThe APOE ɛ4 allele is associated with a risk of Alzheimer’s disease in the elderly, with the association being pronounced in females. Conversely, findings of the effects of the APOE ɛ4 allele in young adults are mixed. Here, we investigated the sex–genotype interaction effects of the APOE ɛ4 allele on cognitive functions as well as brain structures among 1258 young adults. After adjusting for multiple comparisons, there were significant effects of the interaction between sex and the number of APOE ɛ4 allele on some speed tasks (e.g., simple processing speed tasks and the reverse Stroop task) as well as on regional white matter volume (rWMV). The observed sex–genotype interaction conferred better cognitive performance and greater rWMV in the anterior frontal and precentral white matter areas in females having more APOE ɛ4 alleles and reduced rWMV in the same areas in male having more APOE ɛ4 alleles. These findings support the long-debated antagonistic pleiotropic effects of the APOE ɛ4 allele in females.

Funder

Young Scientists Fund

Ministry of Education, Culture, Sports, Science and Technology

Publisher

Oxford University Press (OUP)

Subject

Cellular and Molecular Neuroscience,Cognitive Neuroscience

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