Hiroyuki Ichijo

J-GLOBAL         Last updated: Jan 8, 2019 at 15:37
Hiroyuki Ichijo
Research funding number

Research Areas


Academic & Professional Experience

Apr 2012
professor, University of Toyama

Published Papers

Kawaguchi M, Hagio H, Yamamoto N, Matsumoto K, Nakayama K, Akazome Y, Izumi H, Tsuneoka Y, Suto F, Murakami Y, Ichijo H.
J Comp Neurol      2018   [Refereed]
Ichijo H, Nakamura T, Kawaguchi M, Takeuchi Y.
Frontiers in Neuroscience   10 595   Jan 2017   [Refereed]
Many vertebrates have asymmetrical circuits in the nervous system. There are two types of circuit asymmetry. Asymmetrical circuits in sensory and/or motor systems are usually related to lateralized behaviors. It has been hypothesized that spatial ...
Hiroyuki Ichijo
Medical Education (Japan)   47 343-351   2016   [Refereed]
Hiroyuki Ichijo, Tomoko Toyama.
Anatomical Science International   90(4) 229-234   2015   [Refereed]
Hiroyuki Ichijo,Michito Hamada, Satoru Takahashi, Makoto Kobayashi, Takeharu Nagai, Tomoko Toyama, Masahumi Kawaguchi.
Neuroscience Research   95 27-37   2015   [Refereed]
Shimbo M, Ando S, Sugiura N, Kimata K, Ichijo H
Brain research   1491 34-43   Jan 2013   [Refereed]
Ando S, Sugiura N, Kimata K, Ichijo H
Anatomical science international / Japanese Association of Anatomists      Mar 2010   [Refereed]
Ichijo H
Molecular neurobiology   30 23-33   Aug 2004   [Refereed][Invited]
IchijoHiroyuki, KawabataIzumi, 一條裕之
The Journal of neuroscience   21(23) 9304-9314   Dec 2001   [Refereed]
The axons of the retinal ganglion cells run on the diencephalotelencephalicboundary on their way to the tectum; however,they do not invade the telencephalon anteriorly. To investigatethe mechanisms that prevent the retinal axons from entering thet...
IchijoHiroyuki, 一條裕之
Developmental brain research   117(2) 199-211   Nov 1999   [Refereed]
To understand the development of the retinotopic map, differentiation of the topographic map was quantitatively examined in the chick. Labeling the retinal ganglion cell (RGC) axons anterogradely with the local injections of DiI revealed the relat...
Ichijo Hiroyuki, Bonhoeffer Friedrich, 一條裕之
The Journal of neuroscience   18(13) 5008-5018   Jul 1998   [Refereed]
To understand the development of the topographic map in thechick retinotectal projection, we studied the long-term interactionsbetween retinal axons and tectal cell processes using anovel coculture system, the ryomen chamber. Both nasal andtempora...
Retinotectal projection after partial ablation of chick optic vesicles.
Matsuno T, Itasaki N, Ichijo H, Nakamura H
Neuroscience research   15 96-101   Oct 1992   [Refereed]
Establishment of rostrocaudal polarity in tectal primordium: engrailed expression and subsequent tectal polarity.
Itasaki N, Ichijo H, Hama C, Matsuno T, Nakamura H
Development (Cambridge, England)   113 1133-1144   Dec 1991   [Refereed]
Regulation of the rostrocaudal axis of the optic tectum: histological study after rostrocaudal rotation in quail-chick chimeras.
Matsuno T, Ichijo H, Nakamura H
Brain research. Developmental brain research   58 265-270   Feb 1991   [Refereed]
Rotation of the tectal primordium reveals plasticity of target recognition in retinotectal projection.
Ichijo H, Fujita S, Matsuno T, Nakamura H
Development (Cambridge, England)   110 331-342   Oct 1990   [Refereed]

Research Grants & Projects

Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2006 - 2007    Investigator(s): Hiroyuki ICHIJO
Chondroitin sulfate glycosaminoglycans (CSs) inhibit axonal growth of retinal ganglion cells to keep territory of their growth on the diencephalon, the optic tract. CSs' chains contains higher structural diversities; however, it is not well known ...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2004 - 2005    Investigator(s): Hiroyuki ICHIJO
Chondroitin sulfates (CSs) are carbohydrate polymers consisting of disaccharide units of glucuronic acid and N-acetylgalactosamine. Depending on sulfation positions, different units are distinguished, and combinations of the various CSs' units dem...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2002 - 2003    Investigator(s): Hiroyuki ICHIJO
Axons of retinal ganglion cells do not invade the telencephalon anteriorly. Our previous researches have shown that the telencephalic cells secrete chondroitin sulfate proteoglycans (CSPGs), and that their carbohydrate chains (chondroitin sulfates...


Graduate School of Medicine, Kyoto Prefectural University of Medicine
School of Medicine, Sapporo Medical University