World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
67
Citations
17987
World Ranking
8137
National Ranking
147

Overview

John Ashby is a researcher affiliated with Syngenta (Switzerland) based in Switzerland. Their work primarily focuses on the medical field, with specific contributions to epidemiology, neurology, and emergency medicine.

Their research explores several main topics, including:

  • Traumatic Brain Injury Research
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Cardiac Arrest and Resuscitation

John Ashby has published in venues such as:

  • Cureus

A recent example of their scholarly work is the publication titled A Narrative Review of the Effects of Internal Jugular Vein Compression on Brain Structure and Function During Periods of Head Impact, published in 2025 in the journal Cureus.

Collaborations are an important aspect of Ashby's research, with frequent co-authors including:

  • Kathryn A Brieck
  • Zachary J Brieck
  • Owen C Phelps
  • Ibolja Černak

Best Publications

  • Chemical structure, Salmonella mutagenicity and extent of carcinogenicity as indicators of genotoxic carcinogenesis among 222 chemicals tested in rodents by the U.S. NCI/NTP.

    John Ashby;Raymond W. Tennant

  • Some Alkyl Hydroxy Benzoate Preservatives (Parabens) Are Estrogenic

    Edwin J. Routledge;Joanne Parker;Jenny Odum;John Ashby

  • Definitive relationships among chemical structure, carcinogenicity and mutagenicity for 301 chemicals tested by the U.S. NTP.

    John Ashby;Raymond W. Tennant

  • An evaluation of 6 short-term tests for detecting organic chemical carcinogens

    I F Purchase;E Longstaff;J Ashby;J A Styles

  • Mechanistically-based Human Hazard Assessment of Peroxisome Proliferator-induced Hepatocarcinogenesis:

    J. Ashby;A. Brady;C.R. Elcombe;B.M. Elliott

  • The rodent uterotrophic assay: Critical protocol features, studies with nonyl phenols, and comparison with a yeast estrogenicity assay

    J. Odum;P.A. Lefevre;S. Tittensor;D. Paton

  • International Commission for Protection Against Environmental Mutagens and Carcinogens. Genotoxicity under extreme culture conditions. A report from ICPEMC Task Group 9

    David Scott;Sheila M. Galloway;Richard R. Marshall;Motoi Ishidate

  • Evaluation of six short term tests for detecting organic chemical carcinogens and recommendations for their use

    I. F. H. Purchase;E. Longstaff;John Ashby;J. A. Styles

  • Classification according to chemical structure, mutagenicity to Salmonella and level of carcinogenicity of a further 39 chemicals tested for carcinogenicity by the U.S. National Toxicology Program.

    Raymond W. Tennant;John Ashby

  • The OECD program to validate the rat uterotrophic bioassay to screen compounds for in vivo estrogenic responses: phase 1.

    Jun Kanno;Lesley Onyon;Joseph Haseman;Penelope Fenner-Crisp

  • The single cell gel electrophoresis assay for induced DNA damage (comet assay): measurement of tail length and moment.

    J. Ashby;H. Tinwell;P.A. Lefevre;M.A. Browne

  • Fundamental structural alerts to potential carcinogenicity or noncarcinogenicity

    John Ashby

  • The prospects for a simplified and internationally harmonized approach to the detection of possible human carcinogens and mutagens.

    John Ashby

  • Does carcinogenic potency correlate with mutagenic potency in the Ames assay

    John Ashby;J. A. Styles

  • Safety evaluation of phytosterol esters. Part 1. Assessment of oestrogenicity using a combination of in vivo and in vitro assays.

    V.A Baker;P.A Hepburn;S.J Kennedy;P.A Jones

  • The peripubertal male rat assay as an alternative to the Hershberger castrated male rat assay for the detection of anti-androgens, oestrogens and metabolic modulators

    J. Ashby;P. A. Lefevre

  • The OECD program to validate the rat uterotrophic bioassay. Phase 2: Dose-response studies

    Jun Kanno;Lesley Onyon;Shyamal Peddada;John Ashby

  • Structure activity relationships in skin sensitization using the murine local lymph node assay

    J Ashby;D A Basketter;D Paton;I Kimber

  • Critical review and evaluation of the uterotrophic bioassay for the identification of possible estrogen agonists and antagonists: in support of the validation of the OECD uterotrophic protocols for the laboratory rodent. Organisation for Economic Co-operation and Development.

    J William Owens;John Ashby

  • Phenotypic Anchoring of Gene Expression Changes during Estrogen-Induced Uterine Growth

    Jonathan G. Moggs;Helen Tinwell;Tracey Spurway;Hur Song Chang

Frequent Co-Authors

Ian Kimber
Ian Kimber University of Manchester
Diana Anderson
Diana Anderson University of Bradford
John P. Sumpter
John P. Sumpter Brunel University London
James M. Parry
James M. Parry Swansea University
Peter Schmezer
Peter Schmezer German Cancer Research Center
Colin F. Arlett
Colin F. Arlett University of Sussex
Raymond W. Tennant
Raymond W. Tennant National Institutes of Health
Errol Zeiger
Errol Zeiger National Institutes of Health
James L. Maggs
James L. Maggs University of Liverpool
Joseph K. Haseman
Joseph K. Haseman National Institutes of Health

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Best Scientists Citing John Ashby