World's Best Scientists 2026 revealed!
Graham A.R. Johnston

Graham A.R. Johnston

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Chemistry
Australia
2025

D-Index & Metrics

Chemistry

D-Index
92
Citations
31633
World Ranking
1873
National Ranking
51

Graham A.R. Johnston 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 Graham A.R. Johnston sits on this spectrum.

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 publications 1,295+

This scientist: 398 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Graham A.R. Johnston 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 Graham A.R. Johnston sits on this spectrum.

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 D-Index 159+

This scientist: 92 D-Index — 90th percentile

90% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2025 - Research.com Chemistry in Australia Leader Award
  • 2022 - Research.com Chemistry in Australia Leader Award

Overview

Graham A.R. Johnston is affiliated with the University of Sydney in Australia. Their research primarily spans the fields of Medicine and Neuroscience, with notable contributions in Cellular and Molecular Neuroscience, Plant Science, Pathology and Forensic Medicine, Molecular Biology, and Biological Psychiatry.

The scientist's work addresses multiple topics including:

  • GABA and Rice Research
  • Neuroscience and Neuropharmacology Research
  • Tea Polyphenols and Effects
  • Tryptophan and brain disorders
  • Nicotinic Acetylcholine Receptors Study
  • Biochemical effects in animals
  • Psoriasis: Treatment and Pathogenesis

Recent publications by Graham A.R. Johnston include:

  • Milestone review: GABA, from chemistry, conformations, ionotropic receptors, modulators, epilepsy, flavonoids, and stress to neuro-nutraceuticals, 2024, Journal of Neurochemistry
  • Factors associated with adverse COVID-19 outcomes in patients with psoriasis-insights from a global registry-based study, 2020, Journal of Allergy and Clinical Immunology

Other prominent papers closely related to the scientific community around Johnston's work, though authored by frequent coauthors, include:

  • GABA-enriched teas as neuro-nutraceuticals, 2020, Neurochemistry International
  • GABA, epigallocatechin gallate, tea, and the gut-brain axis, 2024, Neurochemistry International
  • Targeting GABAC Receptors Improves Post-Stroke Motor Recovery, 2021, Brain Sciences

The frequent coauthors collaborating with Johnston are:

  • Tina Hinton
  • Vincent Viengkhou
  • Sandra Kindaro
  • Herbert F. Jelinek
  • Slade Matthews

Graham A.R. Johnston's research has appeared most frequently in the following publication venues:

  • Journal of Neurochemistry
  • Neurochemistry International
  • Journal of Allergy and Clinical Immunology
  • Brain Sciences
  • JID Innovations

In addition to journal publications, Johnston has contributed to book literature. One notable book is Recent Advances in the Health Benefits of Tea, published by IntechOpen in 2022.

Best Publications

  • Amino acid transmitters in the mammalian central nervous system

    David R. Curtis;Graham A. R. Johnston

  • Bicuculline, an antagonist of GABA and synaptic inhibition in the spinal cord of the cat.

    D.R. Curtis;A.W. Duggan;D. Felix;G.A.R. Johnston

  • THE STRUCTURAL SPECIFICITY OF THE HIGH AFFINITY UPTAKE OF l‐GLUTAMATE AND l‐ASPARTATE BY RAT BRAIN SLICES

    V. J. Balcar;G.A. R. Johnston

  • GABA, Bicuculline and Central Inhibition

    D. R. Curtis;A. W. Duggan;D. Felix;G. A. R. Johnston

  • A pharmacological study of the depression of spinal neurones by glycine and related amino acids

    D. R. Curtis;L. Hösli;G. A. R. Johnston

  • The hyperpolarization of spinal motoneurones by glycine and related amino acids.

    D. R. Curtis;L. Hösli;G. A. R. Johnston;I. H. Johnston

  • The 'ABC' of GABA receptors: a brief review.

    Mary Chebib;Graham A R Johnston

  • GABA UPTAKE IN RAT CENTRAL NERVOUS SYSTEM: COMPARISON OF UPTAKE IN SLICES AND HOMOGENATES AND THE EFFECTS OF SOME INHIBITORS

    L. L. Iversen;G. A. R. Johnston

  • GABAA receptor pharmacology

    G.A.R. Johnston

  • GABA-Activated ligand gated ion channels: medicinal chemistry and molecular biology.

    Mary Chebib;Graham A. R. Johnston

  • The specificity of strychnine as a glycine antagonist in the mammalian spinal cord.

    D. R. Curtis;A. W. Duggan;G. A. R. Johnston

  • Antagonism between bicuculline and GABA in the cat brain.

    D.R. Curtis;A.W. Duggan;D. Felix;G.A.R. Johnston

  • A new class of GABA agonist.

    P. Krogsgaard-Larsen;G. A. R. Johnston;D. Lodge;D. R. Curtis

  • Central nervous system depressant action of flavonoid glycosides

    Sebastián P. Fernández;Cristina Wasowski;Leonardo M. Loscalzo;Renee E. Granger

  • Inhibition of GABA uptake in rat brain slices by nipecotic acid, various isoxazoles and related compounds.

    P. Krogsgaard-Larsen;G. A. R. Johnston

  • Spinal interneurone excitation by conformationally restricted analogues of L-glutamic acid

    G. A. R. Johnston;D. R. Curtis;J. Davies;R. M. Mcculloch

  • GABA(A) receptor channel pharmacology.

    Graham A.R. Johnston

  • Uptake and release of D- and L-aspartate by rat brain slices.

    L. P. Davies;G. A. R. Johnston

  • ACTION OF THE NEUROTOXIN KAINIC ACID ON HIGH AFFINITY UPTAKE OF l‐GLUTAMIC ACID IN RAT BRAIN SLICES

    G. A. R. Johnston;Sue M. E. Kennedy;B. Twitchin

  • GLYCINE UPTAKE IN RAT CENTRAL NERVOUS SYSTEM SLICES AND HOMOGENATES: EVIDENCE FOR DIFFERENT UPTAKE SYSTEMS IN SPINAL CORD AND CEREBRAL CORTEX

    G. A. R. Johnston;L. L. Iversen

Frequent Co-Authors

Mary Chebib
Mary Chebib University of Sydney
David R. Curtis
David R. Curtis Australian National University
Peter R. Dodd
Peter R. Dodd University of Queensland
Philip M. Beart
Philip M. Beart Florey Institute of Neuroscience and Mental Health
Trevor W. Hambley
Trevor W. Hambley University of Sydney
Sarah C. R. Lummis
Sarah C. R. Lummis University of Cambridge
Andrew L. Gundlach
Andrew L. Gundlach Florey Institute of Neuroscience and Mental Health
Joel C. Bornstein
Joel C. Bornstein University of Melbourne
Povl Krogsgaard-Larsen
Povl Krogsgaard-Larsen University of Copenhagen
Jillian J. Kril
Jillian J. Kril University of Sydney

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