World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
87
Citations
22549
World Ranking
13800
National Ranking
7004

Fred J. Karsch 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 Fred J. Karsch 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: 213 publications — 4th percentile

4% of scientists in this discipline score the same or lower.

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

Fred J. Karsch 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 Fred J. Karsch 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: 87 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Overview

Fred J. Karsch is affiliated with the University of Michigan-Ann Arbor in the United States. Their research integrates areas within neuroscience, medicine, and immunology and microbiology, reflecting an interdisciplinary approach to understanding biological systems.

The scientist's primary research fields include:

  • Neuroscience
  • Medicine
  • Immunology and Microbiology

Subfields within these disciplines that Fred J. Karsch has contributed to are:

  • Behavioral Neuroscience
  • Reproductive Medicine
  • Immunology

The topics addressed in their work encompass:

  • Stress Responses and Cortisol
  • Hypothalamic control of reproductive hormones
  • Reproductive System and Pregnancy

A notable recent publication from 2022 is titled "Regulation of the gonadotropin-releasing hormone neuron during stress", which appeared in the Journal of Neuroendocrinology. This article explores mechanisms underlying hormonal regulation linked to stress and reproductive function.

Fred J. Karsch has frequently published in the Journal of Neuroendocrinology, indicating ongoing engagement with neuroendocrine research communities.

Collaborative relationships in their research include co-authorship with:

  • Richard B. McCosh
  • Kevin T. O'Bryne
  • Kellie M. Breen

These collaborations suggest a network focused on neuroscience and reproductive medicine topics, contributing to interdisciplinary studies on hormone regulation and stress responses.

Best Publications

  • Neuroendocrine basis of seasonal reproduction.

    Fred J. Karsch;Eric L. Bittman;Douglas L. Foster;Robert L. Goodman

  • Role of estrogen as initiator of daily LH surges in the ovariectomized rat.

    Sandra J. Legan;G. Allyn Coon;Fred J. Karsch

  • Pulsatile Secretion of Luteinizing Hormone: Differential Suppression by Ovarian Steroids

    Robert L. Goodman;Fred J. Karsch

  • Pattern of gonadotropin-releasing hormone (GnRH) secretion leading up to ovulation in the ewe: Existence of a preovulatory GnRH surge

    Suzanne M. Moenter;Alain Caraty;Alain Caraty;Alain Locatelli;Alain Locatelli;Fred J. Karsch

  • Pineal Melatonin Secretion Drives the Reproductive Response to Daylength in the Ewe

    Eric L. Bittman;Robert J. Dempsey;Fred J. Karsch

  • A daily signal for the LH surge in the rat.

    Sandra J. Legan;Fred J. Karsch

  • The endocrine control of seasonal reproductive function in the ewe: A marked change in response to the negative feedback action of estradiol on luteinizing hormone secretion

    Sandra J. Legan;Fred J. Karsch;Douglas L. Foster

  • The estradiol-induced surge of gonadotropin-releasing hormone in the ewe.

    Suzanne M. Moenter;Alain Caraty;Fred J. Karsch

  • A new concept for control of the estrous cycle of the ewe based on the temporal relationships between luteinizing hormone estradiol and progesterone in peripheral serum and evidence that progesterone inhibits tonic LH secretion.

    Richard L. Hauger;Fred J. Karsch;Douglas L. Foster

  • Positive and negative feedback control by estrogen of luteinizing hormone secretion in the rhesus monkey.

    F.J. Karsch;D.J. Dierschke;R.F. Weick;T. Yamaji

  • Do gonadotropin-releasing hormone, tyrosine hydroxylase-, and beta-endorphin-immunoreactive neurons contain estrogen receptors? A double-label immunocytochemical study in the Suffolk ewe

    Michael N. Lehman;Fred J. Karsch

  • Nightly duration of pineal melatonin secretion determines the reproductive response to inhibitory day length in the ewe.

    Eric L. Bittman;Fred J. Karsch

  • 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

  • Immunocytochemical localization of luteinizing hormone-releasing hormone (LHRH) pathways in the sheep brain during anestrus and the mid-luteal phase of the estrous cycle.

    Michael N. Lehman;Jane E. Robinson;Fred J. Karsch;Ann-Judith Silverman

  • Induced LH surges in the rhesus monkey: Strength-duration characteristics of the estrogen stimulus

    F. J. Karsch;R. F. Weick;W. R. Butler;D. J. Dierschke

  • Evidence That the Mediobasal Hypothalamus Is the Primary Site of Action of Estradiol in Inducing the Preovulatory Gonadotropin Releasing Hormone Surge in the Ewe

    A. Caraty;C. Fabre-Nys;B. Delaleu;A. Locatelli

  • Sexual differentiation of pituitary function: Apparent difference between primates and rodents

    F. J. Karsch;D. J. Dierschke;E. Knobil

  • Importance of Estradiol and Progesterone in Regulating LH Secretion and Estrous Behavior During the Sheep Estrous Cycle

    Fred J. Karsch;Sandra J. Legan;Kathleen D. Ryan;Douglas L. Foster

  • Alterations in the control of luteinizing hormone pulse frequency underlie the seasonal variation in estradiol negative feedback in the ewe.

    Robert L. Goodman;Eric L. Bittman;Douglas L. Foster;Fred J. Karsch

  • Gonadotropin-releasing hormone requirements for ovulation.

    Fred J. Karsch;Jennifer M. Bowen;Alain Caraty;Neil P. Evans

Frequent Co-Authors

Geoffrey E. Dahl
Geoffrey E. Dahl University of Florida
Vasantha Padmanabhan
Vasantha Padmanabhan University of Michigan–Ann Arbor
Michael N. Lehman
Michael N. Lehman Kent State University
Iain J. Clarke
Iain J. Clarke University of Melbourne
Eric L. Bittman
Eric L. Bittman University of Massachusetts Amherst
Morton B. Brown
Morton B. Brown University of Michigan–Ann Arbor
David T. Mauger
David T. Mauger Pennsylvania State University
Terry M. Nett
Terry M. Nett Colorado State University
James F. Roche
James F. Roche University College Dublin
Paul H. Hemsworth
Paul H. Hemsworth University of Melbourne

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