Jun‐ichi Iga

3.3k citations

105 papers · 2.2k indexed · h-index 28

Impact in

Biological Psychiatry top 0.5%
- Tryptophan and brain disorders
Behavioral Neuroscience top 5%
- Stress Responses and Cortisol

Papers in ⓘ

Biological Psychiatry 19
- Tryptophan and brain disorders 19
Psychiatry and Mental health 38
- Dementia and Cognitive Impairment Research 16
- Bipolar Disorder and Treatment 15
- Schizophrenia research and treatment 12

Co-authors: Shuichi Ueno (73 shared papers)Tetsuro Ohmori (46 shared papers)Shusuke Numata (32 shared papers)Yuta Yoshino (48 shared papers)Ken Yamauchi (14 shared papers)Satsuki Sumitani (16 shared papers)Masahito Nakataki (15 shared papers)Kiyohiro Yamazaki (29 shared papers)
Journals: Journal of Alzheimer s Disease (9 papers)Psychiatry and Clinical Neurosciences (7 papers)Journal of Psychiatric Research (5 papers)Human Psychopharmacology Clinical and Experimental (4 papers)Scientific Reports (3 papers)
Partner nations: Japan Switzerland Australia

In The Last Decade

Jun‐ichi Iga

97 papers receiving 2.2k citations

Peers

Countries citing papers authored by Jun‐ichi Iga

Since Specialization

Citations

This map shows the geographic impact of Jun‐ichi Iga'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 Jun‐ichi Iga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jun‐ichi Iga more than expected).

Fields of papers citing papers by Jun‐ichi Iga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jun‐ichi Iga. 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 Jun‐ichi Iga. The network helps show where Jun‐ichi Iga may publish in the future.

Co-authors

The 25 scholars most cited alongside Jun‐ichi Iga, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Jun‐ichi Iga Line = papers co-authored together Jun‐ichi Iga links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 105 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Metabolite changes and gender differences in schizophrenia using 3-Tesla proton magnetic resonance spectroscopy (1H-MRS) Schizophrenia Research ·Shin’Ya Tayoshi, Satsuki Sumitani, Kyoko Taniguchi, Sumiko Shibuya‐Tayoshi, Shusuke Numata, Jun‐ichi Iga, Masahito Nakataki, Shuichi Ueno, Masafumi Harada, Tetsuro Ohmori	2008	94
2	GABA concentration in schizophrenia patients and the effects of antipsychotic medication: A proton magnetic resonance spectroscopy study Schizophrenia Research ·Shin’Ya Tayoshi, Masahito Nakataki, Satsuki Sumitani, Kyoko Taniguchi, Sumiko Shibuya‐Tayoshi, Shusuke Numata, Jun‐ichi Iga, Shuichi Ueno, Masafumi Harada, Tetsuro Ohmori	2009	90
3	Discontinuation of antidepressants after remission with antidepressant medication in major depressive disorder: a systematic review and meta-analysis Molecular Psychiatry ·Masaki Kato, Hikaru Hori, Takeshi Inoue, Jun‐ichi Iga, Masaaki Iwata, Takahiko Inagaki, Kiyomi Shinohara, Hissei Imai, Atsunobu Murata, Kazuo Mishima, Aran Tajika	2020	88
4	Brain-derived neurotrophic factor (BDNF) Val66Met polymorphism in schizophrenia is associated with age at onset and symptoms Neuroscience Letters ·Shusuke Numata, Shuichi Ueno, Jun‐ichi Iga, Ken Yamauchi, Hongwei Song, Koji Ohta, Sawako Kinouchi, Sumiko Shibuya‐Tayoshi, Shin’Ya Tayoshi, Michitaka Aono, Naomi Kameoka, Satsuki Sumitani, Masahito Tomotake, Y Kaneda, Takahide Taniguchi, Yasuhito Ishimoto, Tetsuro Ohmori	2006	88
5	Gene expression and association analysis of vascular endothelial growth factor in major depressive disorder Progress in Neuro-Psychopharmacology and Biological Psychiatry ·Jun‐ichi Iga, Shuichi Ueno, Ken Yamauchi, Shusuke Numata, Sumiko Tayoshi‐Shibuya, Sawako Kinouchi, Masahito Nakataki, Hongwei Song, Kazuhiko Hokoishi, Hirotaka Tanabe, Akira Sano, Tetsuro Ohmori	2006	87
6	Altered HDAC5 and CREB mRNA expressions in the peripheral leukocytes of major depression Progress in Neuro-Psychopharmacology and Biological Psychiatry ·Jun‐ichi Iga, Shuichi Ueno, Ken Yamauchi, Shusuke Numata, Sawako Kinouchi, Sumiko Tayoshi‐Shibuya, Hongwei Song, Tetsuro Ohmori	2006	78
7	Predictors of subjective and objective quality of life in outpatients with schizophrenia Psychiatry and Clinical Neurosciences ·Ken Yamauchi, Hirofumi Aki, Masahito Tomotake, Jun‐ichi Iga, Syusuke Numata, Ikuyo Motoki, Yumiko Izaki, Shin’Ya Tayoshi, Sawako Kinouchi, Satsuki Sumitani, Sumiko Tayoshi, Yumiko Takikawa, Y Kaneda, Takahide Taniguchi, Yasuhito Ishimoto, Syu‐Ichi Ueno, Tetsuro Ohmori	2008	77
8	The Val66Met polymorphism of the brain‐derived neurotrophic factor gene is associated with psychotic feature and suicidal behavior in Japanese major depressive patients American Journal of Medical Genetics Part B Neuropsychiatric Genetics ·Jun‐ichi Iga, Shuichi Ueno, Ken Yamauchi, Shusuke Numata, Sumiko Tayoshi‐Shibuya, Sawako Kinouchi, Masahito Nakataki, Hongwei Song, Kazuhiko Hokoishi, Hirotaka Tanabe, Akira Sano, Tetsuro Ohmori	2007	75
9	DNA methylation changes at TREM2 intron 1 and TREM2 mRNA expression in patients with Alzheimer's disease Journal of Psychiatric Research ·Yuki Ozaki, Yuta Yoshino, Kiyohiro Yamazaki, Tomoko Sao, Yoko Mori, Shinichiro Ochi, Taku Yoshida, Takaaki Mori, Jun‐ichi Iga, Shuichi Ueno	2017	68
10	Blood diagnostic biomarkers for major depressive disorder using multiplex DNA methylation profiles: discovery and validation Epigenetics ·Shusuke Numata, Kazuo Ishii, Atsushi Tajima, Jun‐ichi Iga, Makoto Kinoshita, Shinya Watanabe, Hidehiro Umehara, Manabu Fuchikami, Satoshi Okada, Shuken Boku, Akitoyo Hishimoto, Shinji Shimodera, Issei Imoto, Shigeru Morinobu, Tetsuro Ohmori	2015	64
11	Subjective and objective quality of life, levels of life skills, and their clinical determinants in outpatients with schizophrenia Psychiatry Research ·Hirofumi Aki, Masahito Tomotake, Y Kaneda, Jun‐ichi Iga, Sawako Kinouchi, Sumiko Shibuya‐Tayoshi, Shin’Ya Tayoshi, Ikuyo Motoki, Kazuhiko Moriguchi, Satsuki Sumitani, Ken Yamauchi, Takahide Taniguchi, Yasuhito Ishimoto, Shuichi Ueno, Tetsuro Ohmori	2007	64
12	DNA Methylation Signatures of Peripheral Leukocytes in Schizophrenia NeuroMolecular Medicine ·Makoto Kinoshita, Shusuke Numata, Atsushi Tajima, Shinji Shimodera, Shinji Ono, Akira Imamura, Jun‐ichi Iga, Shinya Watanabe, Kumiko Kikuchi, Hiroko Kubo, Masahito Nakataki, Satsuki Sumitani, Issei Imoto, Yuji Okazaki, Tetsuro Ohmori	2012	59
13	DNA methylation changes at SNCA intron 1 in patients with dementia with Lewy bodies Psychiatry and Clinical Neurosciences ·Yu Funahashi, Yuta Yoshino, Kiyohiro Yamazaki, Yoko Mori, Takaaki Mori, Yuki Ozaki, Tomoko Sao, Shinichiro Ochi, Jun‐ichi Iga, Shuichi Ueno	2016	49
14	Serotonin transporter mRNA expression in peripheral leukocytes of patients with major depression before and after treatment with paroxetine Neuroscience Letters ·Jun‐ichi Iga, Shuichi Ueno, Ken Yamauchi, Ikuyo Motoki, Sumiko Tayoshi, Koshi Ohta, Hongwei Song, Kyoko Morita, Kazuhito Rokutan, Tetsuro Ohmori	2005	48
15	Positive association of the PDE4B (phosphodiesterase 4B) gene with schizophrenia in the Japanese population Journal of Psychiatric Research ·Shusuke Numata, Shuichi Ueno, Jun‐ichi Iga, Hongwei Song, Masahito Nakataki, Shin’Ya Tayoshi, Satsuki Sumitani, Masahito Tomotake, Mitsuo Itakura, Akira Sano, Tetsuro Ohmori	2008	43
16	Gene expression and association analysis of LIM (PDLIM5) in major depression Neuroscience Letters ·Jun‐ichi Iga, Shuichi Ueno, Ken Yamauchi, Shusuke Numata, Ikuyo Motoki, Sumiko Tayoshi, Sawako Kinouchi, Koshi Ohta, Hongwei Song, Kyoko Morita, Kazuhito Rokutan, Hirotaka Tanabe, Akira Sano, Tetsuro Ohmori	2006	39
17	Subjective and Objective Measures of Quality of Life Have Different Predictors for People with Schizophrenia Psychological Reports ·Masahito Tomotake, Y Kaneda, Jun‐ichi Iga, Sawako Kinouchi, Sumiko Tayoshi, Ikuyo Motoki, Satsuki Sumitani, Ken Yamauchi, Takahide Taniguchi, Yasuhito Ishimoto, Shuichi Ueno, Tetsuro Ohmori	2006	39
18	Elevated mRNA Expression and Low Methylation of SNCA in Japanese Alzheimer’s Disease Subjects Journal of Alzheimer s Disease ·Yuta Yoshino, Takaaki Mori, Taku Yoshida, Kiyohiro Yamazaki, Yuki Ozaki, Tomoko Sao, Yu Funahashi, Jun‐ichi Iga, Shuichi Ueno	2016	35
19	INPP5D mRNA Expression and Cognitive Decline in Japanese Alzheimer’s Disease Subjects Journal of Alzheimer s Disease ·Yuta Yoshino, Kiyohiro Yamazaki, Yuki Ozaki, Tomoko Sao, Taku Yoshida, Takaaki Mori, Yoko Mori, Shinichiro Ochi, Jun‐ichi Iga, Shuichi Ueno	2017	35
20	Association study of polymorphism in the serotonin transporter gene promoter, methylation profiles, and expression in patients with major depressive disorder Human Psychopharmacology Clinical and Experimental ·Jun‐ichi Iga, Shinya Watanabe, Shusuke Numata, Hidehiro Umehara, Akira Nishi, Makoto Kinoshita, Masatoshi Inoshita, Shinji Shimodera, Hirokazu Fujita, Tetsuro Ohmori	2016	34

About Jun‐ichi Iga

Jun‐ichi Iga is a scholar working on Biological Psychiatry, Psychiatry and Mental health, Neurology, Behavioral Neuroscience and Cellular and Molecular Neuroscience, having authored 105 papers that have together received 2.2k indexed citations. Recurring topics across this work include Tryptophan and brain disorders (19 papers), Alzheimer's disease research and treatments (16 papers), Dementia and Cognitive Impairment Research (16 papers), Bipolar Disorder and Treatment (15 papers), Schizophrenia research and treatment (12 papers), Epigenetics and DNA Methylation (10 papers), Genetics and Neurodevelopmental Disorders (9 papers) and Neuroinflammation and Neurodegeneration Mechanisms (9 papers). The work is most often cited by research in Biological Psychiatry (452 citations), Behavioral Neuroscience (162 citations), Psychiatry and Mental health (630 citations), Neurology (203 citations) and Cellular and Molecular Neuroscience (430 citations). Jun‐ichi Iga has collaborated with scholars based in Japan, Switzerland and Australia. Frequent co-authors include Shuichi Ueno, Tetsuro Ohmori, Shusuke Numata, Yuta Yoshino, Ken Yamauchi, Satsuki Sumitani, Masahito Nakataki, Kiyohiro Yamazaki, Takaaki Mori and Shinichiro Ochi. Their work appears in journals such as Journal of Alzheimer s Disease, Psychiatry and Clinical Neurosciences, Journal of Psychiatric Research, Human Psychopharmacology Clinical and Experimental and Scientific Reports.

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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