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Hiroshi Hiejima

Observed names: H. Hiejima, Hiejima Hiroshi, Hiejima, Hiroshi, Hiroshi HIEJIMA
ORCID: 0000-0002-0936-4383
Observed ORCID: 0000-0002-0936-4383
OpenAlex ID: A5016002353
Ingested Medium-Chain Fatty Acids Are Directly Utilized for the Acyl Modification of Ghrelin
2005 · Yoshihiro Nishi, Hiroshi Hiejima, et al. · Endocrinology · 253
Effect of CPAP treatment on residual depressive symptoms in patients with major depression and coexisting sleep apnea: Contribution of daytime sleepiness to residual depressive symptoms
2010 · Mitsunari Habukawa, Naohisa Uchimura, et al. · Sleep Medicine · 83
Developmental Changes in the Pattern of Ghrelin’s Acyl Modification and the Levels of Acyl-Modified Ghrelins in Murine Stomach
2005 · Yoshihiro Nishi, Hiroshi Hiejima, et al. · Endocrinology · 59
Structures and molecular forms of the ghrelin-family peptides
2011 · Yoshihiro Nishi, Junko Yoh, et al. · Peptides · 58
A polymorphism in CCR1/CCR3 is associated with narcolepsy
2015 · Hiromi Toyoda, Taku Miyagawa, et al. · Brain Behavior and Immunity · 53
Differences in rapid eye movement (REM) sleep abnormalities between posttraumatic stress disorder (PTSD) and major depressive disorder patients: REM interruption correlated with nightmare complaints in PTSD
2017 · Mitsunari Habukawa, Naohisa Uchimura, et al. · Sleep Medicine · 35
New susceptibility variants to narcolepsy identified in HLA class II region
2014 · Taku Miyagawa, Hiromi Toyoda, et al. · Human Molecular Genetics · 30
An association analysis of HLA-DQB1 with narcolepsy without cataplexy and idiopathic hypersomnia with/without long sleep time in a Japanese population
2015 · Taku Miyagawa, Hiromi Toyoda, et al. · Human Genome Variation · 25
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Regional distribution and the dynamics of n-decanoyl ghrelin, another acyl-form of ghrelin, upon fasting in rodents
2009 · Hiroshi Hiejima, Yoshihiro Nishi, et al. · Regulatory Peptides · 25
Efficacy and Safety of Transitioning to Lemborexant from Z-drug, Suvorexant, and Ramelteon in Japanese Insomnia Patients: An Open-label, Multicenter Study
2024 · Motohiro Ozone, Susumu Hirota, et al. · Advances in Therapy · 24
A rare genetic variant in the cleavage site of prepro-orexin is associated with idiopathic hypersomnia
2022 · Taku Miyagawa, Susumu Tanaka, et al. · npj Genomic Medicine · 21
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Genome-wide association study of idiopathic hypersomnia in a Japanese population
2021 · Kotomi Tanida, Mihoko Shimada, et al. · Sleep and Biological Rhythms · 16
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Polysomnographic Sleep Disturbances Due to High-Dose Zolpidem Use: A Case Report
2018 · Hayato Ohshima, Nozomu Kotorii, et al. · Journal of Clinical Sleep Medicine · 10
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A variant at 9q34.11 is associated with HLA-DQB1*06:02 negative essential hypersomnia
2018 · Taku Miyagawa, Seik-Soon Khor, et al. · Journal of Human Genetics · 5
Sleep Structure in Untreated Adults With ADHD: A Retrospective Study
2023 · Takao Kato, Motohiro Ozone, et al. · Journal of Attention Disorders · 4
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Trends in the multiple prescriptions of hypnotic drugs in a university outpatient in Japan
2023 · Takao Kato, Nozomu Kotorii, et al. · Neuropsychopharmacology Reports · 3
Evaluation of sleep disturbance in post-traumatic stress disorder
2003 · Mitsunari HABUKAWA, Naohisa UCHIMURA, et al. · Sleep and Biological Rhythms · 3
A retrospective exploratory study of sleep spindles as an adjunctive diagnostic marker for narcolepsy type 1: a comparison with insufficient sleep syndrome
2026 · Yuuki Hyodo, Hiroshi Hiejima, et al. · Sleep and Biological Rhythms · 1
A multicenter, open-label study to evaluate the efficacy and safety of lemborexant alternative therapy in subjects with insomnia (Somnus study)
2024 · M. Ozone, S. Hirota, et al. · Sleep Medicine · 1
Sleep Spindle Measures in Japanese Patients With Drug‐Naïve Schizophrenia Using Standard Polysomnography Data: A Retrospective Pilot Study
2026 · Satoshi Mizuki, Nozomu Kotorii, et al. · Early Intervention in Psychiatry
Investigation of Sleep Architecture and Individual Traits Associated with the Discrepancy Between Subjective and Objective Sleepiness: A Retrospective Observational Study
2026 · H. Hiejima, M. Ozone, et al. · Sleep Medicine
Efficacy and Safety of Yokukansan in Patients with Initial-Onset Insomnia: A Multicenter Prospective Observational Study
2026 · M. Ozone, Y. Hyodo, et al. · Sleep Medicine
Diagnostic Potential of Sleep Spindles in drug-naïve Schizophrenia Using Standard PSG Data: A Retrospective Pilot Study
2026 · S. Mizuki, N. Kotorii, et al. · Sleep Medicine
A rare genetic variant in the cleavage site of prepro-orexin confers susceptibility to idiopathic hypersomnia
2026 · T. Miyagawa, S. Tanaka, et al. · Sleep Medicine
Association Between Spindle Wave Activity and Subjective Sleep Evaluation in Drug-Naïve Adolescents With ADHD and Sleep Complaints
2026 · T. Kato, M. Ozone, et al. · Sleep Medicine
Works count: 38
Citation count: 709
H-index: 12
I10-index: 13
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