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Masao Hattori

Masao Hattori

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 75 4521 4110 255 239 369 17482
Biology and Biochemistry 77 4844 4468 317 297 372 18672

Masao Hattori publications per year

The chart shows the history of publications by Masao Hattori between 1967 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Masao Hattori published across 60 years, from 1967 to 2026, averaging 7.3 papers a year. Output peaked at 23 publications in 2000. 4 of the 437 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1967 to 2026. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 2000. 1967: 1 publication 1968: 0 publications 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 1 publication 1973: 0 publications 1974: 1 publication 1975: 2 publications 1976: 1 publication 1977: 1 publication 1978: 0 publications 1979: 2 publications 1980: 1 publication 1981: 0 publications 1982: 4 publications 1983: 3 publications 1984: 5 publications 1985: 4 publications 1986: 4 publications 1987: 9 publications 1988: 14 publications 1989: 8 publications 1990: 12 publications 1991: 11 publications 1992: 15 publications 1993: 20 publications 1994: 12 publications 1995: 9 publications 1996: 12 publications 1997: 15 publications 1998: 17 publications 1999: 17 publications 2000: 23 publications 2001: 19 publications 2002: 22 publications 2003: 11 publications 2004: 11 publications 2005: 8 publications 2006: 10 publications 2007: 13 publications 2008: 22 publications 2009: 14 publications 2010: 19 publications 2011: 10 publications 2012: 8 publications 2013: 9 publications 2014: 7 publications 2015: 6 publications 2016: 5 publications 2017: 3 publications 2018: 1 publication 2019: 1 publication 2020: 3 publications 2021: 2 publications 2022: 1 publication 2023: 1 publication 2024: 2 publications 2025: 3 publications 2026: 1 publication
1967 2026

437 publications in total across all disciplines

View publications per year as a table
Masao Hattori: publications per year, 1967 to 2026
Year Publications
1967 1
1968 0
1969 1
1970 0
1971 0
1972 1
1973 0
1974 1
1975 2
1976 1
1977 1
1978 0
1979 2
1980 1
1981 0
1982 4
1983 3
1984 5
1985 4
1986 4
1987 9
1988 14
1989 8
1990 12
1991 11
1992 15
1993 20
1994 12
1995 9
1996 12
1997 15
1998 17
1999 17
2000 23
2001 19
2002 22
2003 11
2004 11
2005 8
2006 10
2007 13
2008 22
2009 14
2010 19
2011 10
2012 8
2013 9
2014 7
2015 6
2016 5
2017 3
2018 1
2019 1
2020 3
2021 2
2022 1
2023 1
2024 2
2025 3
2026 1
Total 437
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Masao Hattori publication distribution in Chemistry in 2026

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

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 361–380 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 369 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522 369
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Masao Hattori D-index placement in Chemistry in 2026

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

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 74–75 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 75 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501 75
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Masao Hattori is affiliated with the University of Toyama in Japan and has an extensive research portfolio focused primarily on medical and biomedical fields. Their work spans disciplines within Medicine as well as Biochemistry, Genetics and Molecular Biology.

The scientist's main field of study is Medicine, with 162 publications. Within this broad domain, their research delves into several significant subfields including Oncology (75 publications), Pulmonary and Respiratory Medicine (40 publications), Cancer Research (35 publications), Genetics (14 publications), and Surgery (9 publications).

Major research topics addressed by Masao Hattori include:

  • Advanced Breast Cancer Therapies
  • HER2/EGFR in Cancer Research
  • Breast Cancer Treatment Studies
  • Cancer Treatment and Pharmacology
  • Chronic Lymphocytic Leukemia Research
  • Cancer Genomics and Diagnostics
  • Breast Implant and Reconstruction

Frequent publication venues reflect the focus on cancer and clinical oncology, featuring:

  • Breast Cancer
  • Cancer Research
  • Annals of Oncology
  • Japanese Journal of Clinical Oncology
  • Journal of Clinical Oncology

Prominent recent papers by Masao Hattori include:

  • The frequency of low HER2 expression in breast cancer and a comparison of prognosis between patients with HER2-low and HER2-negative breast cancer by HR status, 2021, Breast Cancer
  • The Japanese Breast Cancer Society Clinical Practice Guidelines for systemic treatment of breast cancer, 2018 edition, 2020, Breast Cancer
  • Datopotamab Deruxtecan Versus Chemotherapy in Previously Treated Inoperable/Metastatic Hormone Receptor-Positive Human Epidermal Growth Factor Receptor 2-Negative Breast Cancer: Primary Results From TROPION-Breast01, 2024, Journal of Clinical Oncology
  • The Japanese Breast Cancer Society Clinical Practice Guidelines for systemic treatment of breast cancer, 2022 edition, 2023, Breast Cancer
  • LBA11 Datopotamab deruxtecan (Dato-DXd) vs chemotherapy in previously-treated inoperable or metastatic hormone receptor-positive, HER2-negative (HR+/HER2-) breast cancer (BC): Primary results from the randomised phase III TROPION-Breast01 trial, 2023, Annals of Oncology

Masao Hattori regularly collaborates with several coauthors who contribute significantly to their research efforts. Frequent collaborators include Hiroji Iwata, Haruru Kotani, Akiyo Yoshimura, Masataka Sawaki, and Ayumi Kataoka.

Best Publications

  • Anti-HIV-1 and anti-HIV-1-protease substances from Ganoderma Lucidum

    Sahar El-Mekkawy;Meselhy R. Meselhy;Norio Nakamura;Yasuhiro Tezuka

  • Inhibitory effects of sudanese medicinal plant extracts on hepatitis C virus (HCV) protease.

    Ghazi Hussein;Hirotsugu Miyashiro;Norio Nakamura;Masao Hattori

  • Pharmacokinetics of Berberine and Its Main Metabolites in Conventional and Pseudo Germ-Free Rats Determined by Liquid Chromatography/Ion Trap Mass Spectrometry

    Feng Zuo;Norio Nakamura;Teruaki Akao;Masao Hattori

  • The cytotoxic activity of ursolic acid derivatives

    Chao-Mei Ma;Shao-Qing Cai;Jing-Rong Cui;Rui-Qing Wang

  • Mechanism of antihepatotoxic activity of glycyrrhizin. I: Effect on free radical generation and lipid peroxidation.

    Yoshinobu Kiso;Masahiro Tohkin;Hiroshi Hikino;Masao Hattori

  • Biotransformation of pinoresinol diglucoside to mammalian lignans by human intestinal microflora, and isolation of Enterococcus faecalis strain PDG-1 responsible for the transformation of (+)-pinoresinol to (+)-lariciresinol.

    Li-Hua Xie;Teruaki Akao;Kenjiro Hamasaki;Takeshi Deyama

  • Inhibitory effects of Egyptian folk medicines on human immunodeficiency virus (HIV) reverse transcriptase

    Sahar El-Mekkawy;Meselhy R. Meselhy;Ines Tomoco Kusumoto;Shigetoshi Kadota

  • Screening of various plant extracts used in ayurvedic medicine for inhibitory effects on human immunodeficiency virus type 1 (HIV-1) protease

    Ines Tomoco Kusumoto;Takeshi Nakabayashi;Hiroaki Kida;Hirotsugu Miyashiro

  • Effect of tea polyphenols on glucan synthesis by glucosyltransferase from Streptococcus mutans

    Masao Hattori;Ines Tomoco Kusumoto;Tsuneo Namba;Tadashi Ishigami

  • A search for anti-viral properties in Panamanian medicinal plants. The effects on HIV and its essential enzymes.

    I.T Matsuse;Y.A Lim;M Hattori;M Correa

  • Efficacy of Thai medicinal plant extracts against herpes simplex virus type 1 infection in vitro and in vivo.

    Vimolmas Lipipun;Masahiko Kurokawa;Rutt Suttisri;Pagorn Taweechotipatr

  • New Triterpene Aldehydes, Lucialdehydes A—C, from Ganoderma lucidum and Their Cytotoxicity against Murine and Human Tumor Cells

    Jiang-Jing Gao;Byung-Sun Min;Eun-Mi Ahn;Norio Nakamura

  • Screening of Indonesian plant extracts for anti‐human immunodeficiency virus—type 1 (HIV‐1) activity

    Toru Otake;Haruyo Mori;Motoko Morimoto;Noboru Ueba

  • Five new maleic and succinic acid derivatives from the mycelium of Antrodia camphorata and their cytotoxic effects on LLC tumor cell line.

    Norio Nakamura;Akiko Hirakawa;Jiang-Jing Gao;Hiroko Kakuda

  • Anti-HIV-1 phorbol esters from the seeds of Croton tiglium.

    Sahar El-Mekkawy;Meselhy R. Meselhy;Norio Nakamura;Masao Hattori

  • Anti-herpes simplex virus (HSV-1) activity of oxyresveratrol derived from Thai medicinal plant: mechanism of action and therapeutic efficacy on cutaneous HSV-1 infection in mice.

    Taksina Chuanasa;Jurairatana Phromjai;Vimolmas Lipipun;Kittisak Likhitwitayawuid

  • Anti-inflammatory effects of emodin from ventilago leiocarpa.

    Cheng-Hsiung Chang;Chun-Ching Lin;Jenq-Jer Yang;Tsuneo Namba

  • Metabolism of glycyrrhizin by human intestinal flora.

    Masao Hattori;Tatsuya Sakamoto;Kyoichi Kobashi;Tsuneo Namba

  • A modified and convenient method for assessing tumor cell invasion and migration and its application to screening for inhibitors

    Ken-ichi Saito;Tohru Oku;Naomi Ata;Hirotsugu Miyashiro

  • Sodium tanshinone IIA sulfonate derived from Danshen (Salvia miltiorrhiza) attenuates hypertrophy induced by angiotensin II in cultured neonatal rat cardiac cells.

    Kyoko Takahashi;Xinshou Ouyang;Katsuko Komatsu;Norio Nakamura

Frequent Co-Authors

Tsuneo Namba
Tsuneo Namba University of Toyama
Takako Yokozawa
Takako Yokozawa University of Toyama
Byung Sun Min
Byung Sun Min Catholic University of Daegu
Shigetoshi Kadota
Shigetoshi Kadota University of Toyama
Kunitada Shimotohno
Kunitada Shimotohno National Center For Global Health and Medicine
Kimiyasu Shiraki
Kimiyasu Shiraki University of Toyama
KiHwan Bae
KiHwan Bae Chungnam National University
Yasuhiro Tezuka
Yasuhiro Tezuka Hokuriku University
Young Ho Kim
Young Ho Kim Kyungpook National University
Jae Sue Choi
Jae Sue Choi Pukyong National University

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