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Iain J. Clarke

D-Index & Metrics

Medicine

D-Index
93
Citations
30149
World Ranking
10934
National Ranking
343

Iain J. Clarke 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 Iain J. Clarke 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: 562 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

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

Iain J. Clarke 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 Iain J. Clarke 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: 93 D-Index — 47th percentile

47% of scientists in this discipline score the same or lower.

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

Overview

Iain J. Clarke is affiliated with the University of Melbourne in Australia and has a research focus primarily within the fields of Medicine and Agricultural and Biological Sciences. Their work often intersects with several subfields, including Animal Science and Zoology, Reproductive Medicine, Insect Science, Endocrine and Autonomic Systems, and Physiology.

The scientist's research covers multiple main topics, notably:

  • Effects of Environmental Stressors on Livestock
  • Meat and Animal Product Quality
  • Hypothalamic Control of Reproductive Hormones
  • Regulation of Appetite and Obesity
  • Adipose Tissue and Metabolism
  • Ovarian Function and Disorders
  • Reproductive Physiology in Livestock

Their extensive publication record includes contributions to a variety of journals, with frequent appearances in the following venues:

  • Animals
  • Journal of Endocrinology
  • Journal of Animal Science
  • Molecular Metabolism
  • Animal Frontiers

Representative recent papers authored or co-authored by Clarke include:

  • "Resilience of Small Ruminants to Climate Change and Increased Environmental Temperature: A Review" (2020, Animals)
  • "The melanocortin pathway and energy homeostasis: From discovery to obesity therapy" (2021, Molecular Metabolism)
  • "Effect of sex and sex steroids on brown adipose tissue heat production in humans" (2020, European Journal of Endocrinology)
  • "Impact of heat stress on ruminant livestock production and meat quality, and strategies for amelioration" (2023, Animal Frontiers)
  • "Comparative Assessment of Thermotolerance in Dorper and Second-Cross (Poll Dorset/Merino × Border Leicester) Lambs" (2020, Animals)

Frequent collaborators in Clarke's research include:

  • Frank R. Dunshea
  • Surinder S. Chauhan
  • B. J. Leury
  • Kristy DiGiacomo
  • Belinda A. Henry

Best Publications

  • The temporal relationship between gonadotropin releasing hormone (GnRH) and luteinizing hormone (LH) secretion in ovariectomized ewes.

    Iain J. Clarke;James T. Cummins

  • Kisspeptin neurons in the arcuate nucleus of the ewe express both dynorphin A and neurokinin B.

    Robert L Goodman;Michael N Lehman;Jeremy Troy Smith;Lique M Coolen

  • Effects of stress on reproduction in non-rodent mammals: the role of glucocorticoids and sex differences

    Alan J Tilbrook;Anne I Turner;Iain J Clarke

  • KiSS-1 messenger ribonucleic acid expression in the hypothalamus of the ewe is regulated by sex steroids and season.

    Jeremy Troy Smith;Colin Clay;Alain Caraty;Iain James Clarke

  • Discovery of potent kisspeptin antagonists delineate physiological mechanisms of gonadotropin regulation

    Antonia K Roseweir;Alexander S Kauffman;Jeremy Troy Smith;Kathryn A Guerriero

  • Potent action of RFamide-related peptide-3 on pituitary gonadotropes indicative of a hypophysiotropic role in the negative regulation of gonadotropin secretion

    Iain James Clarke;Ika Puspita Sari;Yue Qi;Jeremy Troy Smith

  • Photoperiodically-induced cycles in the secretion of prolactin in hypothalamo-pituitary disconnected rams: evidence for translation of the melatonin signal in the pituitary gland.

    G. A. Lincoln;I. J. Clarke

  • Variation in Kisspeptin and RFamide-Related Peptide (RFRP) Expression and Terminal Connections to Gonadotropin-Releasing Hormone Neurons in the Brain: A Novel Medium for Seasonal Breeding in the Sheep

    Jeremy T. Smith;Lique M. Coolen;Lance J. Kriegsfeld;Ika P. Sari

  • Kisspeptin Synchronizes Preovulatory Surges in Cyclical Ewes and Causes Ovulation in Seasonally Acyclic Ewes

    Alain Caraty;Jeremy Troy Smith;D Lomet;S Ben Said

  • Kisspeptin Cells in the Ewe Brain Respond to Leptin and Communicate with Neuropeptide Y and Proopiomelanocortin Cells

    Kathryn Backholer;Jeremy Troy Smith;Alexandra Rao;Alda Pereira

  • Steroid feedback inhibition of pulsatile secretion of gonadotropin-releasing hormone in the ewe.

    Fred J. Karsch;James T. Cummins;Gregory B. Thomas;Iain J. Clarke

  • Central administration of leptin to ovariectomized ewes inhibits food intake without affecting the secretion of hormones from the pituitary gland: evidence for a dissociation of effects on appetite and neuroendocrine function.

    Belinda A. Henry;James W. Goding;Warren S. Alexander;Alan J. Tilbrook

  • Studies of the secretion of corticotropin-releasing factor and arginine vasopressin into the hypophysial-portal circulation of the conscious sheep. I. Effect of an audiovisual stimulus and insulin-induced hypoglycemia.

    Dennis Engler;Thao Pham;Meryl J. Fullerton;Guck Ooi

  • Characterizing a Mammalian Circannual Pacemaker

    Gerald A Lincoln;Iain James Clarke;Roelof A Hut;David G Hazlerigg

  • Kisspeptin is essential for the full preovulatory LH surge and stimulates GnRH release from the isolated ovine median eminence

    Jeremy T Smith;Qun Li;Kai Sing Yap;Muhammad Shahab

  • Elevated KiSS-1 expression in the arcuate nucleus prior to the cyclic preovulatory gonadotrophin-releasing hormone/lutenising hormone surge in the ewe suggests a stimulatory role for kisspeptin in oestrogen-positive feedback.

    Karla Estrada;Colin Clay;Sueli Pompolo;Jeremy Troy Smith

  • Kisspeptin is present in ovine hypophysial portal blood but does not increase during the preovulatory luteinizing hormone surge: evidence that gonadotropes are not direct targets of kisspeptin in vivo.

    Jeremy Troy Smith;Alexandra Rao;Alda Pereira;Alain Caraty

  • Pituitary Gland Function after Disconnection from Direct Hypothalamic Influences in the Sheep

    Iain James Clarke;James Thomas Cummins;James Thomas Cummins;David Morritz de Kretser

  • Measurement of growth hormone-releasing hormone and somatostatin in hypothalamic-portal plasma of unanesthetized sheep. Spontaneous secretion and response to insulin-induced hypoglycemia.

    L A Frohman;T R Downs;I J Clarke;G B Thomas

  • Kisspeptin neurons in the ovine arcuate nucleus and preoptic area are involved in the preovulatory luteinizing hormone surge.

    Jeremy Troy Smith;Qun Li;Alda Pereira;Iain James Clarke

Frequent Co-Authors

Frank R. Dunshea
Frank R. Dunshea University of Melbourne
John W. Funder
John W. Funder Hudson Institute of Medical Research
Jock K. Findlay
Jock K. Findlay Hudson Institute of Medical Research
Robert P. Millar
Robert P. Millar University of Pretoria
David Robertson
David Robertson Vanderbilt University
Fred J. Karsch
Fred J. Karsch University of Michigan–Ann Arbor
D. M. de Kretser
D. M. de Kretser Monash University
Gavin W. Lambert
Gavin W. Lambert Swinburne University of Technology
Brian J. Leury
Brian J. Leury University of Melbourne
Brian J. Oldfield
Brian J. Oldfield Monash University

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Best Scientists Citing Iain J. Clarke

Johannes D. Veldhuis

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Mayo Clinic

Publications: 152

Robert P. Millar

Robert P. Millar

University of Pretoria

Publications: 96

Kazuyoshi Tsutsui

Kazuyoshi Tsutsui

Hiroshima University

Publications: 85

Vasantha Padmanabhan

Vasantha Padmanabhan

University of Michigan–Ann Arbor

Publications: 82

Manuel Tena-Sempere

Manuel Tena-Sempere

University of Córdoba

Publications: 78

Robert L. Goodman

Robert L. Goodman

West Virginia University

Publications: 66

Allan E. Herbison

Allan E. Herbison

University of Cambridge

Publications: 66

Fred J. Karsch

Fred J. Karsch

University of Michigan–Ann Arbor

Publications: 63

Graeme Martin

Graeme Martin

University of Western Australia

Publications: 63

Lance J. Kriegsfeld

Lance J. Kriegsfeld

University of California, Berkeley

Publications: 57

Frank R. Dunshea

Frank R. Dunshea

University of Melbourne

Publications: 57

Waljit S. Dhillo

Waljit S. Dhillo

Imperial College London

Publications: 56

George E. Bentley

George E. Bentley

University of California, Berkeley

Publications: 52

Stafford L. Lightman

Stafford L. Lightman

University of Bristol

Publications: 43

Leonor Pinilla

Leonor Pinilla

University of Córdoba

Publications: 41

Gary L. Williams

Gary L. Williams

Texas A&M University

Publications: 39

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