Ryohachi Arai

3.7k total citations · 1 hit paper
88 papers, 3.1k citations indexed

About

Ryohachi Arai is a scholar working on Cellular and Molecular Neuroscience, Molecular Biology and Endocrine and Autonomic Systems. According to data from OpenAlex, Ryohachi Arai has authored 88 papers receiving a total of 3.1k indexed citations (citations by other indexed papers that have themselves been cited), including 60 papers in Cellular and Molecular Neuroscience, 31 papers in Molecular Biology and 20 papers in Endocrine and Autonomic Systems. Recurrent topics in Ryohachi Arai's work include Neuroscience and Neuropharmacology Research (31 papers), Neurotransmitter Receptor Influence on Behavior (25 papers) and Receptor Mechanisms and Signaling (18 papers). Ryohachi Arai is often cited by papers focused on Neuroscience and Neuropharmacology Research (31 papers), Neurotransmitter Receptor Influence on Behavior (25 papers) and Receptor Mechanisms and Signaling (18 papers). Ryohachi Arai collaborates with scholars based in Japan, France and United States. Ryohachi Arai's co-authors include Ikuko Nagatsu, Toshihiro Maeda, Nobuyuki Karasawa, David M. Jacobowitz, M. Geffard, Wakoto Matsuda, Takahiro Furuta, Takeshi Kaneko, Kouichi Nakamura and Fumino Fujiyama and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Neuroscience and Physical review. B, Condensed matter.

In The Last Decade

Ryohachi Arai

88 papers receiving 3.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Single Nigrostriatal Dopaminergic Neurons Form Widely Spread and Highly Dense Axonal Arborizations in the Neostriatum

2009 579 citations Ryohachi Arai et al. profile →

Peers

Ryohachi Arai

CMN

NEURO

EAS

Esther Asan Germany

D. Riché France

Stephen Rayport United States

Tomás González‐Hernández Spain

Miwako Yamasaki Japan

Monique Touret France

Pratap Meera United States

Jeong Seop Rhee Germany

M. Tsacopoulos Switzerland

Massimo Pasqualetti Italy

Esther Asan Germany

Ryohachi Arai

2.2k ×1.1

CMN

1.5k ×1.4

395 ×0.5

NEURO

567 ×1.7

232 ×0.8

EAS

Citations per year, relative to Ryohachi Arai Ryohachi Arai (= 1×) peers Esther Asan

Countries citing papers authored by Ryohachi Arai

Since Specialization

Citations

This map shows the geographic impact of Ryohachi Arai's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryohachi Arai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryohachi Arai more than expected).

Fields of papers citing papers by Ryohachi Arai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryohachi Arai. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryohachi Arai. The network helps show where Ryohachi Arai may publish in the future.

Co-authorship network of co-authors of Ryohachi Arai

This figure shows the co-authorship network connecting the top 25 collaborators of Ryohachi Arai. A scholar is included among the top collaborators of Ryohachi Arai based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryohachi Arai. Ryohachi Arai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Kouzaki, Hideaki, Mikio Suzuki, Takeshi Shimizu, et al.. (2005). Presence of monoamine oxidase type B protein but absence of associated enzyme activity in neurons within the inferior olive nucleus of the rat. Brain Research. 1055(1-2). 202–207. 2 indexed citations

Li, Yaohua, T. Yamane, Osamu Ogikubo, et al.. (2003). Inhibition of recombinant dipeptidyl peptidase III by synthetic hemorphin-like peptides. Peptides. 24(5). 773–778. 39 indexed citations

Nakamura, Takaaki, Yoshihiko Nishio, Hiroshi Maegawa, et al.. (2001). Insulin Production in a Neuroectodermal Tumor that Expresses Islet Factor-1, But Not Pancreatic-Duodenal Homeobox 1. The Journal of Clinical Endocrinology & Metabolism. 86(4). 1795–1800. 25 indexed citations

Arai, Ryohachi, et al.. (1999). Monoamine oxidase in the intermediolateral nucleus of the thoracic spinal cord of the rat. A histochemical study. Brain Research. 833(2). 302–307. 1 indexed citations

Arai, Ryohachi, et al.. (1999). Noradrenaline-degrading activity of monoamine oxidase is localized in noradrenergic neurons of the locus coeruleus of the rat. Neuroscience Letters. 264(1-3). 61–64. 1 indexed citations

Ikemoto, Keiko, Kunio Kitahama, Akiyoshi Nishimura, et al.. (1999). Tyrosine hydroxylase and aromatic l-amino acid decarboxylase do not coexist in neurons in the human anterior cingulate cortex. Neuroscience Letters. 269(1). 37–40. 44 indexed citations

Ikemoto, Keiko, Ikuko Nagatsu, Kunio Kitahama, et al.. (1998). A dopamine-synthesizing cell group demonstrated in the human basal forebrain by dual labeling immunohistochemical technique of tyrosine hydroxylase and aromatic l-amino acid decarboxylase. Neuroscience Letters. 243(1-3). 129–132. 32 indexed citations

Ikemoto, Keiko, Ikuko Nagatsu, Akiyoshi Nishimura, Katsuji Nishi, & Ryohachi Arai. (1998). Do all of human midbrain tyrosine hydroxylase neurons synthesize dopamine?. Brain Research. 805(1-2). 255–258. 32 indexed citations

Arai, Ryohachi, et al.. (1998). Monoamine oxidase activity in noradrenaline neurons of the locus coeruleus of the rat. A double-labeling histochemical study. Brain Research. 814(1-2). 209–212. 10 indexed citations

10.

Arai, Ryohachi, et al.. (1997). Postnatal colocalization of tyrosine hydroxylase and choline acetyltransferase in neurons of the dorsal motor nucleus of the vagus of the laboratory shrew (Suncus murinus). 13(3). 171–179. 5 indexed citations

11.

Arai, Ryohachi, Nobuyuki Karasawa, M. Geffard, & Ikuko Nagatsu. (1995). l-DOPA is converted to dopamine in serotonergic fibers of the striatum of the rat: a double-labeling immunofluorescence study. Neuroscience Letters. 195(3). 195–198. 156 indexed citations

12.

Karasawa, Nobuyuki, Ryohachi Arai, Kei Yamada, et al.. (1994). D-neurons (TH-negative, AADC-positive neurons) may belong to APUD system in the laboratory shrew (Suncus murinus) brain. 10(4). 311–318. 7 indexed citations

13.

Arai, Ryohachi, Nobuyuki Karasawa, M. Geffard, Toshiharu Nagatsu, & Ikuko Nagatsu. (1994). Immunohistochemical evidence that central serotonin neurons produce dopamine from exogenousl-DOPA in the rat, with reference to the involvement of aromaticl-amino acid decar☐ylase. Brain Research. 667(2). 295–299. 140 indexed citations

14.

Karasawa, Nobuyuki, Ryohachi Arai, Keiki Yamada, et al.. (1994). Phenotypic changes of AADC-only immunopositive premammillary neurons in the brain of laboratory shrew Suncus murinus by systemic administration of monoamine precursors. Neuroscience Letters. 179(1-2). 65–70. 26 indexed citations

15.

Arai, Ryohachi, et al.. (1994). Protein products of the bacterial reporter gene are found within axon terminals in the brain of transgenic mice. Neuroscience Letters. 168(1-2). 76–80. 1 indexed citations

16.

Nagatsu, Ikuko, Nobuyuki Karasawa, Keiki Yamada, et al.. (1994). Expression of human tyrosine hydroxylase-chloramphenicol acetyltransferase (CAT) fusion gene in the brains of transgenic mice as examined by CAT immunocytochemistry. Journal of Neural Transmission. 96(2). 85–104. 9 indexed citations

17.

Arai, Mari, et al.. (1993). Appearance of calretinin-immunoreactive neurons in the upper layers of the rat superior colliculus after eye enucleation. Brain Research. 613(2). 341–346. 20 indexed citations

18.

Winsky, Lois, Pascale Montpied, Ryohachi Arai, Brian M. Martin, & D.M. Jacobowitz. (1992). Calretinin distribution in the thalamus of the rat: Immunohistochemical and in situ hybridization histochemical analyses. Neuroscience. 50(1). 181–196. 75 indexed citations

19.

Arai, Ryohachi, Lois Winsky, Mari Arai, & David M. Jacobowitz. (1991). Immunohistochemical localization of calretinin in the rat hindbrain. The Journal of Comparative Neurology. 310(1). 21–44. 197 indexed citations

20.

Imai, Harumichi, Ryohachi Arai, Kikuko Imamoto, & Toshihiro Maeda. (1983). Fine structure of MAO positive tanycyte and related blood vessels of rat hypothalamus. : 2. Relation between localization of MAO activity and monoamines.. ACTA HISTOCHEMICA ET CYTOCHEMICA. 16(6). 638. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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