World's Best Scientists 2026 revealed!
Osamu Ishikawa

Osamu Ishikawa

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 81 16639 15654 522 491 846 24372

Osamu Ishikawa publications per year

The chart shows the history of publications by Osamu Ishikawa between 1977 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Osamu Ishikawa published across 49 years, from 1977 to 2025, averaging 18.7 papers a year. Output peaked at 41 publications in 2014. 7 of the 916 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1977 to 2025. Vertical axis: number of publications, 0 to 41. Peak 41 publications in 2014. 1977: 1 publication 1978: 2 publications 1979: 2 publications 1980: 1 publication 1981: 2 publications 1982: 0 publications 1983: 3 publications 1984: 6 publications 1985: 7 publications 1986: 4 publications 1987: 10 publications 1988: 6 publications 1989: 7 publications 1990: 7 publications 1991: 4 publications 1992: 12 publications 1993: 11 publications 1994: 27 publications 1995: 16 publications 1996: 28 publications 1997: 34 publications 1998: 20 publications 1999: 19 publications 2000: 20 publications 2001: 18 publications 2002: 23 publications 2003: 18 publications 2004: 32 publications 2005: 25 publications 2006: 35 publications 2007: 36 publications 2008: 37 publications 2009: 35 publications 2010: 27 publications 2011: 27 publications 2012: 27 publications 2013: 28 publications 2014: 41 publications 2015: 29 publications 2016: 34 publications 2017: 32 publications 2018: 37 publications 2019: 25 publications 2020: 33 publications 2021: 23 publications 2022: 8 publications 2023: 30 publications 2024: 5 publications 2025: 2 publications
1977 2025

916 publications in total across all disciplines

View publications per year as a table
Osamu Ishikawa: publications per year, 1977 to 2025
Year Publications
1977 1
1978 2
1979 2
1980 1
1981 2
1982 0
1983 3
1984 6
1985 7
1986 4
1987 10
1988 6
1989 7
1990 7
1991 4
1992 12
1993 11
1994 27
1995 16
1996 28
1997 34
1998 20
1999 19
2000 20
2001 18
2002 23
2003 18
2004 32
2005 25
2006 35
2007 36
2008 37
2009 35
2010 27
2011 27
2012 27
2013 28
2014 41
2015 29
2016 34
2017 32
2018 37
2019 25
2020 33
2021 23
2022 8
2023 30
2024 5
2025 2
Total 916
Download as CSV

Osamu Ishikawa publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Osamu Ishikawa sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 841–860 publications, is where this scientist sits. 101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101–120 publications 1,796+

This scientist: 846 publications — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230
761–780 228
781–800 217
801–820 204
821–840 186
841–860 177 846
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
Download as CSV

Osamu Ishikawa D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Osamu Ishikawa sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 80–81 D-Index, is where this scientist sits. 70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70–71 D-Index 217+

This scientist: 81 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972 81
82–83 1,027
84–85 1,003
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255
124–125 256
126–127 252
128–129 230
130–131 179
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
Download as CSV

Overview

Osamu Ishikawa is affiliated with Gunma University in Japan and has a research portfolio focused primarily on medicine, with significant contributions in dermatology, epidemiology, pathology and forensic medicine, oncology, and immunology. They have published extensively on a range of topics related to systemic sclerosis, dermatologic treatments, inflammatory myopathies, mast cell biology, pancreatic and hepatic oncology, eosinophilic disorders, and the intersection of skin diseases and diabetes.

The main topics of their work include:

  • Systemic Sclerosis and Related Diseases
  • Dermatologic Treatments and Research
  • Inflammatory Myopathies and Dermatomyositis
  • Mast cells and histamine
  • Pancreatic and Hepatic Oncology Research
  • Eosinophilic Disorders and Syndromes
  • Skin Diseases and Diabetes

Ishikawa has contributed to numerous scientific papers published in reputable journals. Notable recent publications include:

  • "Tocilizumab in systemic sclerosis: a randomised, double-blind, placebo-controlled, phase 3 trial" (2020), The Lancet Respiratory Medicine
  • "Riociguat in patients with early diffuse cutaneous systemic sclerosis (RISE-SSc): randomised, double-blind, placebo-controlled multicentre trial" (2020), Annals of the Rheumatic Diseases
  • "Clinical implications of the serum CA19-9 level in "biological borderline resectability" and "biological downstaging" in the setting of preoperative chemoradiation therapy for pancreatic cancer" (2020), Pancreatology
  • "Apelin/APJ signaling suppresses the pressure ulcer formation in cutaneous ischemia-reperfusion injury mouse model" (2020), Scientific Reports
  • "Suppression of neuropeptide by botulinum toxin improves imiquimod-induced psoriasis-like dermatitis via the regulation of neuroimmune system" (2020), Journal of Dermatological Science

The frequent coauthors collaborating with Ishikawa are:

  • Sei-ichiro Motegi (25 coauthored papers)
  • Akiko Sekiguchi (12 coauthored papers)
  • Akira Shimizu (11 coauthored papers)
  • Masahito Yasuda (10 coauthored papers)
  • Akihiko Uchiyama (9 coauthored papers)

The most frequent publication venues for Ishikawa's work include:

  • The Journal of Dermatology (18 publications)
  • Journal of Dermatological Science (3 publications)
  • Modern Rheumatology (3 publications)
  • Journal of Cutaneous Immunology and Allergy (3 publications)
  • Scientific Reports (2 publications)

Best Publications

  • Whole-genome sequencing of liver cancers identifies etiological influences on mutation patterns and recurrent mutations in chromatin regulators

    Akihiro Fujimoto;Yasushi Totoki;Tetsuo Abe;Keith A. Boroevich

  • Tocilizumab in systemic sclerosis: a randomised, double-blind, placebo-controlled, phase 3 trial.

    Dinesh Khanna;Celia J F Lin;Daniel E Furst;Jonathan Goldin

  • Practical usefulness of lymphatic and connective tissue clearance for the carcinoma of the pancreas head.

    Osamu Ishikawa;Hiroaki Ohhigashi;Y O Sasaki;Toshiyuki Kabuto

  • A novel image-guided surgery of hepatocellular carcinoma by indocyanine green fluorescence imaging navigation

    Kunihito Gotoh;Terumasa Yamada;Osamu Ishikawa;Hidenori Takahashi

  • Genome-wide cDNA microarray analysis of gene expression profiles in pancreatic cancers using populations of tumor cells and normal ductal epithelial cells selected for purity by laser microdissection

    Toru Nakamura;Yoichi Furukawa;Hidewaki Nakagawa;Tatsuhiko Tsunoda

  • Retaining Cell-Cell Contact Enables Preparation and Culture of Spheroids Composed of Pure Primary Cancer Cells From Colorectal Cancer

    Jumpei Kondo;Hiroko Endo;Hiroaki Okuyama;Osamu Ishikawa

  • Application of sentinel node biopsy to gastric cancer surgery

    Masahiro Hiratsuka;Isao Miyashiro;Osamu Ishikawa;Hiroshi Furukawa

  • Fucosylated haptoglobin is a novel marker for pancreatic cancer : A detailed analysis of the oligosaccharide structure and a possible mechanism for fucosylation

    Noriko Okuyama;Yoshihito Ide;Miyako Nakano;Tsutomu Nakagawa

  • Preoperative indications for extended pancreatectomy for locally advanced pancreas cancer involving the portal vein.

    Osamu Ishikawa;Hiroaki Ohigashi;Shingi Imaoka;Hiroshi Furukawa

  • A new approach to chemoembolization therapy for hepatoma using ethiodized oil, cisplatin, and gelatin sponge

    Yo Sasaki;Shingi Imaoka;Hiroshi Kasugai;Makoto Fujita

  • Prognostic significance of activated Akt expression in pancreatic ductal adenocarcinoma.

    Shinji Yamamoto;Yasuhiko Tomita;Yoshihiko Hoshida;Takaya Morooka

  • Negative Regulation of Phagocytosis in Macrophages by the CD47-SHPS-1 System

    Hideki Okazawa;Sei-ichiro Motegi;Naoko Ohyama;Hiroshi Ohnishi

  • Overexpression of Cyclooxygenase-2 in Carcinoma of the Pancreas

    Jiro Okami;Hirofumi Yamamoto;Yoshiyuki Fujiwara;Masaki Tsujie

  • Risk of Recurrence in a Long-term Follow-up After Surgery in 417 Patients With Hepatitis B- or Hepatitis C-Related Hepatocellular Carcinoma

    Yo Sasaki;Terumasa Yamada;Hideo Tanaka;Hiroaki Ohigashi

  • Overexpressed P-cadherin/CDH3 promotes motility of pancreatic cancer cells by interacting with p120ctn and activating rho-family GTPases.

    Keisuke Taniuchi;Hidewaki Nakagawa;Masayo Hosokawa;Toru Nakamura

  • γ-Aminobutyric Acid (GABA) Stimulates Pancreatic Cancer Growth through Overexpressing GABAA Receptor π Subunit

    Akio Takehara;Masayo Hosokawa;Hidetoshi Eguchi;Hiroaki Ohigashi

  • Down-regulation of RAB6KIFL/KIF20A, a Kinesin Involved with Membrane Trafficking of Discs Large Homologue 5, Can Attenuate Growth of Pancreatic Cancer Cell

    Keisuke Taniuchi;Hidewaki Nakagawa;Toru Nakamura;Hidetoshi Eguchi

  • Expression of N-acetylglucosaminyltransferase V in colorectal cancer correlates with metastasis and poor prognosis.

    Kohei Murata;Eiji Miyoshi;Masao Kameyama;Osamu Ishikawa

  • Genes associated with liver metastasis of colon cancer, identified by genome-wide cDNA microarray.

    Meihua Li;Yu-Min Lin;Suguru Hasegawa;Takashi Shimokawa

  • Preoperative gemcitabine-based chemoradiation therapy for resectable and borderline resectable pancreatic cancer.

    Hidenori Takahashi;Hiroaki Ohigashi;Kunihito Gotoh;Shigeru Marubashi

Frequent Co-Authors

Yoshiki Miyachi
Yoshiki Miyachi Kyoto University
Hidetoshi Eguchi
Hidetoshi Eguchi Osaka University
Yuichiro Doki
Yuichiro Doki Osaka University
Shoji Nakamori
Shoji Nakamori Osaka University
Hironobu Ihn
Hironobu Ihn Kumamoto University
Kazuhiko Takehara
Kazuhiko Takehara Kanazawa University
Minoru Hasegawa
Minoru Hasegawa University of Fukui
Shinichi Sato
Shinichi Sato University of Tokyo
Manabu Fujimoto
Manabu Fujimoto Osaka University
Yusuke Nakamura
Yusuke Nakamura National Institutes of Biomedical Innovation, Health and Nutrition

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in Medicine, exploring online healthcare degrees can offer greater flexibility and help you reach your career goals faster. Many accredited programs are now designed to accommodate working professionals or those seeking to accelerate their studies.

If you’re aiming for advanced nursing roles, consider the quickest dnp program options that allow you to earn a Doctor of Nursing Practice degree in record time. Some students look for a dnp program without clinical hours to fit learning into their busy schedules or to bypass traditional clinical requirements.

For those starting their healthcare careers, a fast track medical lpn program is a practical step toward becoming a Licensed Practical Nurse quickly through online coursework and flexible timelines.

Additionally, mental health specialization is in high demand. Nurses interested in this field can explore the shortest pmhnp program to become certified Psychiatric Mental Health Nurse Practitioners in less time.

Online healthcare programs provide diverse options for different career ambitions, making medical education more accessible than ever before.

Best Scientists Citing Osamu Ishikawa

Trending Scientists

Recently Published Articles