World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
82
Citations
18573
World Ranking
16342
National Ranking
8221

Barry R. Zirkin 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 Barry R. Zirkin sits on this spectrum.

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: 611 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 publications 1,796+

This scientist: 254 publications — 8th percentile

8% of scientists in this discipline score the same or lower.

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

Barry R. Zirkin 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 Barry R. Zirkin sits on this spectrum.

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: 400 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 D-Index 217+

This scientist: 82 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2011 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Barry R. Zirkin is affiliated with Johns Hopkins University in the United States. Their research spans several fields, primarily Medicine and Biochemistry, Genetics and Molecular Biology. Within these areas, they have worked extensively on Molecular Biology, Reproductive Medicine, Public Health, Environmental and Occupational Health, Endocrinology, Diabetes and Metabolism, and Genetics.

Their investigative focus covers a range of topics, including:

  • Sperm and Testicular Function
  • Reproductive Biology and Fertility
  • Hormonal and reproductive studies
  • Effects and risks of endocrine disrupting chemicals
  • Sexual Differentiation and Disorders
  • Adipose Tissue and Metabolism
  • Estrogen and related hormone effects

Barry R. Zirkin has published multiple articles in several scientific venues. The most frequent publication outlets include:

  • The FASEB Journal
  • Frontiers in Toxicology
  • Biology of Reproduction
  • Journal of Cellular Physiology
  • Toxicology

Selected recent papers illustrate the scope of their work:

  • "Sirt1 and Nrf2: regulation of Leydig cell oxidant/antioxidant intracellular environment and steroid formation†" (2021), Biology of Reproduction
  • "Mitochondrial dynamics, Leydig cell function, and age-related testosterone deficiency" (2022), The FASEB Journal
  • "Amhr2-Cre-Mediated Global Tspo Knockout" (2020), Journal of the Endocrine Society
  • "TSPO ligand FGIN-1-27 controls priapism in sickle cell mice via endogenous testosterone production" (2020), Journal of Cellular Physiology
  • "Identification of Rat Testicular Leydig Precursor Cells by Single-Cell-RNA-Sequence Analysis" (2022), Frontiers in Cell and Developmental Biology

Frequent collaborators include:

  • Vassilios Papadopoulos
  • Haolin Chen
  • Kassim Traore
  • Erwin Goldberg
  • Chantal M. Sottas

Barry R. Zirkin was recognized as a Fellow of the American Association for the Advancement of Science (AAAS) in 2011.

Best Publications

  • Leydig cells: formation, function, and regulation.

    Barry R Zirkin;Vassilios Papadopoulos

  • Phthalate-induced Leydig cell hyperplasia is associated with multiple endocrine disturbances.

    Benson T. Akingbemi;Renshan Ge;Gary R. Klinefelter;Barry R. Zirkin

  • Kinetic studies on the development of the adult population of Leydig cells in testes of the pubertal rat.

    Matthew P. Hardy;Barry R. Zirkin;Larry L. Ewing

  • Maintenance of advanced spermatogenic cells in the adult rat testis: quantitative relationship to testosterone concentration within the testis.

    Barry R. Zirkin;Rosemary Santulli;Caleb A. Awoniyi;Larry L. Ewing

  • Modulation of Rat Leydig Cell Steroidogenic Function by Di(2-Ethylhexyl)Phthalate

    Benson T. Akingbemi;Robert T. Youker;Chantal M. Sottas;Renshan Ge

  • Comparison of spontaneous and experimentally induced canine prostatic hyperplasia.

    D P DeKlerk;D S Coffey;L L Ewing;I R McDermott

  • Regulation of Leydig Cell Steroidogenic Function During Aging

    Barry R. Zirkin;Haolin Chen

  • Leydig cells: From stem cells to aging.

    Haolin Chen;Ren Shan Ge;Barry R. Zirkin

  • In search of rat stem Leydig cells: Identification, isolation, and lineage-specific development

    Ren Shan Ge;Qiang Dong;Chantal M. Sottas;Vassilios Papadopoulos

  • The role of disulfide bond reduction during mammalian sperm nuclear decondensation in vivo

    Sally D. Perreault;Robert A. Wolff;Barry R. Zirkin

  • Testosterone secretion by rat, rabbit, guinea pig, dog, and hamster testes perfused in vitro: correlation with Leydig cell mass.

    L. L. Ewing;B. R. Zirkin;R. C. Cochran;N. Kromann

  • Leydig cell aging and the mechanisms of reduced testosterone synthesis

    Andrew S. Midzak;Haolin Chen;Vassilios Papadopoulos;Barry R. Zirkin

  • Age-Related Decreased Leydig Cell Testosterone Production in the Brown Norway Rat

    Haolin Chen;Matthew P. Hardy;Ilpo Huhtaniemi;Barry R. Zirkin

  • Atrazine effects on testosterone levels and androgen-dependent reproductive organs in peripubertal male rats.

    Stephanie V. Trentacoste;Andrew S. Friedmann;Robert T. Youker;Charles B. Breckenridge

  • Steroidogenesis in Leydig cells: effects of aging and environmental factors

    Yiyan Wang;Fenfen Chen;Leping Ye;Barry Zirkin

  • Caspase-3 and caspase-activated deoxyribonuclease are associated with testicular germ cell apoptosis resulting from reduced intratesticular testosterone.

    Jong Min Kim;Shampa R. Ghosh;Alexander C.P. Weil;Barry R. Zirkin

  • In Utero Exposure to Di-(2-ethylhexyl) Phthalate Exerts Both Short-Term and Long-Lasting Suppressive Effects on Testosterone Production in the Rat

    Martine Culty;Raphael Thuillier;Wenping Li;Yan Wang

  • Quantitative pathologic changes in the human testis after vasectomy. A controlled study.

    Jonathan P. Jarow;Jonathan P. Jarow;Robert E. Budin;Robert E. Budin;Martin Dym;Martin Dym;Barry R. Zirkin

  • Germ Cell Apoptosis in the Testes of Sprague Dawley Rats Following Testosterone Withdrawal by Ethane 1,2-Dimethanesulfonate Administration: Relationship to Fas?

    Sumon Nandi;Partha P. Banerjee;Barry R. Zirkin

  • Gene Expression in Rat Leydig Cells During Development from the Progenitor to Adult Stage: A Cluster Analysis

    Ren Shan Ge;Qiang Dong;Chantai M. Sottas;Haolin Chen

Frequent Co-Authors

Vassilios Papadopoulos
Vassilios Papadopoulos University of Southern California
Arthur L. Burnett
Arthur L. Burnett Johns Hopkins University School of Medicine
Alvin M. Matsumoto
Alvin M. Matsumoto University of Washington
William J. Bremner
William J. Bremner University of Washington
Peter N. Schlegel
Peter N. Schlegel Cornell University
Fray F. Marshall
Fray F. Marshall Emory University
Michael A. Trush
Michael A. Trush Johns Hopkins University
Randy J. Nelson
Randy J. Nelson West Virginia University
Cathy H. Wu
Cathy H. Wu University of Delaware
Jacquetta M. Trasler
Jacquetta M. Trasler McGill University Health Centre

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