Manabu Ohyama

5.4k total citations
139 papers, 3.4k citations indexed

About

Manabu Ohyama is a scholar working on Urology, Dermatology and Molecular Biology. According to data from OpenAlex, Manabu Ohyama has authored 139 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 81 papers in Urology, 54 papers in Dermatology and 37 papers in Molecular Biology. Recurrent topics in Manabu Ohyama's work include Hair Growth and Disorders (81 papers), Dermatologic Treatments and Research (23 papers) and Skin and Cellular Biology Research (22 papers). Manabu Ohyama is often cited by papers focused on Hair Growth and Disorders (81 papers), Dermatologic Treatments and Research (23 papers) and Skin and Cellular Biology Research (22 papers). Manabu Ohyama collaborates with scholars based in Japan, United States and United Kingdom. Manabu Ohyama's co-authors include Masayuki Amagai, Tetsuro Kobayashi, Hideyuki Okano, Masahiro Fukuyama, Takashi Sasaki, Wado Akamatsu, Atsushi Shimizu, Kurt S. Stenn, Ralf Paus and Ying Zheng and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Clinical Investigation and SHILAP Revista de lepidopterología.

In The Last Decade

Manabu Ohyama

126 papers receiving 3.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Manabu Ohyama Japan	29	1.6k	1.1k	1.1k	754	426	139	3.4k
Kensei Katsuoka Japan	29	935 0.6×	931 0.8×	700 0.7×	318 0.4×	243 0.6×	130	3.1k
Ryan R. Driskell United States	27	1.1k 0.7×	1.6k 1.4×	948 0.9×	979 1.3×	142 0.3×	38	4.3k
Chong Hyun Won South Korea	32	436 0.3×	535 0.5×	1.6k 1.5×	431 0.6×	459 1.1×	270	3.8k
Motomu Manabe Japan	32	650 0.4×	978 0.9×	644 0.6×	866 1.1×	291 0.7×	109	3.7k
Shigeki Inui Japan	30	1.6k 1.0×	780 0.7×	1.2k 1.2×	603 0.8×	242 0.6×	94	3.0k
Viljar Jaks Estonia	21	668 0.4×	1.5k 1.3×	487 0.5×	521 0.7×	102 0.2×	48	2.8k
Yutaka Shimomura Japan	35	1.3k 0.8×	1.7k 1.5×	635 0.6×	1.3k 1.8×	596 1.4×	159	4.6k
Linda Degenstein United States	22	1.0k 0.6×	3.0k 2.7×	582 0.5×	2.0k 2.7×	317 0.7×	31	4.8k
Zaixin Yang United States	12	2.1k 1.3×	1.6k 1.5×	1.2k 1.1×	1.2k 1.6×	51 0.1×	14	4.1k
Yasuyuki Amoh Japan	26	874 0.5×	1.0k 0.9×	391 0.4×	327 0.4×	78 0.2×	101	2.6k

Countries citing papers authored by Manabu Ohyama

Since Specialization

Citations

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

Fields of papers citing papers by Manabu Ohyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Manabu Ohyama. 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 Manabu Ohyama. The network helps show where Manabu Ohyama may publish in the future.

Co-authorship network of co-authors of Manabu Ohyama

This figure shows the co-authorship network connecting the top 25 collaborators of Manabu Ohyama. A scholar is included among the top collaborators of Manabu Ohyama 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 Manabu Ohyama. Manabu Ohyama 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

Mizukawa, Yoshiko, Natsumi Hama, Hiroyuki Niihara, et al.. (2025). Guidelines for the management of drug‐induced hypersensitivity syndrome 2023. The Journal of Dermatology. 52(3). e189–e209. 2 indexed citations

Ohta, Shigeki, Yoichi Imaizumi, Yohei Okada, et al.. (2025). Correction: Generation of Human Melanocytes from Induced Pluripotent Stem Cells. PLoS ONE. 20(11). e0337375–e0337375.

Takahashi, Ryo, Misaki Kinoshita‐Ise, Yoshimi Yamazaki, Masahiro Fukuyama, & Manabu Ohyama. (2025). Predominance of CD27-PD-1- Effector Memory T Cells Re-Expressing CD45RA Characterizes Treatment-Resistant Severe Alopecia Areata. Journal of Investigative Dermatology. 145(12). 3195–3199.e6.

Sahashi, Kentaro, Yukiko Kamiya, Madoka Iida, et al.. (2025). An acyclic nucleic acid-modified siRNA targeting CAG expansions for polyglutamine disease treatment. Molecular Therapy — Nucleic Acids. 37(1). 102802–102802.

Ohyama, Manabu, Taisuke Ito, Yasuyuki Amoh, et al.. (2025). Japanese Dermatological Association's Clinical Practice Guidelines for Alopecia Areata 2024: A Complete English Translated Version. The Journal of Dermatology. 52(10). e876–e907. 1 indexed citations

King, Brett, Manabu Ohyama, Maryanne M. Senna, et al.. (2024). Outcomes of down-titration in patients with severe scalp alopecia areata initially treated with baricitinib 4-mg: Week 152 data from BRAVE-AA2. Journal of the American Academy of Dermatology. 92(2). 299–306. 4 indexed citations

Kinoshita‐Ise, Misaki, Masahiro Fukuyama, & Manabu Ohyama. (2023). Recent Advances in Understanding of the Etiopathogenesis, Diagnosis, and Management of Hair Loss Diseases. Journal of Clinical Medicine. 12(9). 3259–3259. 17 indexed citations

King, Brett, Jerry Shapiro, Manabu Ohyama, et al.. (2023). Trajectories For Scalp Hair Regrowth In Patients With Severe Alopecia Areata Treated With Baricitinib. SKIN The Journal of Cutaneous Medicine. 7(2). s184–s184. 1 indexed citations

King, Brett, Manabu Ohyama, Maryanne M. Senna, et al.. (2023). 43046 Outcomes of Down-Titration in Patients with Severe Scalp Alopecia Areata Treated with Baricitinib 4 Mg: Week 104 Data from BRAVE-AA2. Journal of the American Academy of Dermatology. 89(3). AB69–AB69. 1 indexed citations

10.

Passeron, Thierry, Brett King, Julien Sénéschal, et al.. (2023). Inhibition of T-cell activity in alopecia areata: recent developments and new directions. Frontiers in Immunology. 14. 1243556–1243556. 40 indexed citations

11.

Nakamura, Kouki, Kazumasa Kamei, James Piercy, et al.. (2023). Degree of Alignment Between Japanese Patients and Physicians on Alopecia Areata Disease Severity and Treatment Satisfaction: A Real-World Survey. Dermatology and Therapy. 14(1). 151–167. 2 indexed citations

12.

King, Brett, Jerry Shapiro, Manabu Ohyama, et al.. (2023). When to expect scalp hair regrowth during treatment of severe alopecia areata with baricitinib: insights from trajectories analyses of patients enrolled in two phase III trials. British Journal of Dermatology. 189(6). 666–673. 25 indexed citations

13.

Aranishi, Toshihiko, Taisuke Ito, Masahiro Fukuyama, et al.. (2022). Prevalence of alopecia areata in Japan: Estimates from a nationally representative sample. The Journal of Dermatology. 50(1). 26–36. 10 indexed citations

14.

Shimomura, Yutaka, Taisuke Ito, Yoshitaka Isaka, et al.. (2022). Treatment of Alopecia Areata with Oral JAK Inhibitor : Focusing on Clinical Outcomes with Baricitinib. The Nishinihon Journal of Dermatology. 84(6). 491–498.

15.

Ohyama, Manabu, et al.. (2022). Management of hair loss after severe acute respiratory syndrome coronavirus 2 infection: Insight into the pathophysiology with implication for better management. The Journal of Dermatology. 49(10). 939–947. 8 indexed citations

16.

Sahashi, Kentaro, Kiyoshi Tachikawa, Michelle Nguyen, et al.. (2021). Selective suppression of polyglutamine-expanded protein by lipid nanoparticle-delivered siRNA targeting CAG expansions in the mouse CNS. Molecular Therapy — Nucleic Acids. 24. 1–10. 27 indexed citations

17.

Colmont, Chantal S., Simon H. Reed, Nga Voong Hawk, et al.. (2013). CD200-expressing human basal cell carcinoma cells initiate tumor growth. Proceedings of the National Academy of Sciences. 110(4). 1434–1439. 28 indexed citations

18.

Ohyama, Manabu, Kenjiro Kosaki, Masayuki Amagai, et al.. (2011). Ichthyosis Follicularis, Alopecia, and Photophobia Syndrome: A Case Report and a Pathological Insight Into Pilosebaceous Anomaly. American Journal of Dermatopathology. 33(4). 403–406. 8 indexed citations

19.

Kiso, Makoto, Shigekazu Tanaka, Rie Saba, et al.. (2009). The disruption of Sox21-mediated hair shaft cuticle differentiation causes cyclic alopecia in mice. Proceedings of the National Academy of Sciences. 106(23). 9292–9297. 56 indexed citations

20.

Ohyama, Manabu, Masayuki Amagai, Kazuyuki Tsunoda, et al.. (2002). Immunologic and Histopathologic Characterization of an Active Disease Mouse Model for Pemphigus Vulgaris. Journal of Investigative Dermatology. 118(1). 199–204. 36 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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