World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
86
Citations
43384
World Ranking
816
National Ranking
78

Julian R. Marchesi publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Julian R. Marchesi sits on this spectrum.

55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55 publications 679+

This scientist: 328 publications — 82nd percentile

82% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

Julian R. Marchesi D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Julian R. Marchesi sits on this spectrum.

40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 86 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

Overview

Julian R. Marchesi is affiliated with Imperial College London in the United Kingdom. Their research primarily focuses on the interface of medicine and biochemistry, genetics, and molecular biology, with a substantial emphasis on molecular biology, infectious diseases, epidemiology, oncology, and physiology.

The main topics covered in Julian R. Marchesi's work include:

  • Gut microbiota and health
  • Clostridium difficile and Clostridium perfringens research
  • Diet and metabolism studies
  • Microscopic Colitis
  • Reproductive tract infections research
  • Gastrointestinal motility and disorders
  • Liver disease diagnosis and treatment

The scientist has contributed extensively to the academic literature, with key papers published in leading venues. Notable recent publications include:

  • Fecal microbiota transplantation plus anti-PD-1 immunotherapy in advanced melanoma: a phase I trial (2023, Nature Medicine)
  • Faecal microbiota transplantation for recurrent Clostridioides difficile infection: An updated systematic review and meta-analysis (2020, EClinicalMedicine)
  • The vaginal microbiota associates with the regression of untreated cervical intraepithelial neoplasia 2 lesions (2020, Nature Communications)
  • Gut Microbiota Modulation of Efficacy and Toxicity of Cancer Chemotherapy and Immunotherapy (2022, Gastroenterology)
  • Commensal Bacteroidetes protect against Klebsiella pneumoniae colonization and transmission through IL-36 signalling (2020, Nature Microbiology)

Julian R. Marchesi frequently publishes in several scientific journals, including:

  • Gastroenterology
  • Gut Microbes
  • Journal of Crohn's and Colitis
  • Journal of Hepatology
  • Research Square

The scientist has collaborated often with researchers such as Benjamin H. Mullish, James L. Alexander, Jesús Miguéns Blanco, Julie A. K. McDonald, and Nathan Danckert.

Best Publications

  • Gut microbiota composition correlates with diet and health in the elderly

    Marcus J. Claesson;Ian B. Jeffery;Susana Conde;Susan E. Power

  • The gut microbiota and host health: a new clinical frontier

    Julian Roberto Marchesi;David H. Adams;Francesca Fava;Gerben D. A. Hermes

  • Design and Evaluation of Useful Bacterium-Specific PCR Primers That Amplify Genes Coding for Bacterial 16S rRNA

    Julian R. Marchesi;Takuichi Sato;Andrew J. Weightman;Tracey A. Martin

  • Composition, variability, and temporal stability of the intestinal microbiota of the elderly

    Marcus J. Claesson;Siobhán Cusack;Orla O'Sullivan;Rachel Greene-Diniz

  • The composition of the gut microbiota throughout life, with an emphasis on early life.

    Juan Miguel Rodríguez;Kiera Murphy;Catherine Stanton;R. Paul Ross

  • Early life stress alters behavior, immunity, and microbiota in rats: implications for irritable bowel syndrome and psychiatric illnesses.

    Siobhain M. O'Mahony;Julian R. Marchesi;Julian R. Marchesi;Paul Scully;Caroline Codling

  • The vocabulary of microbiome research: a proposal.

    Julian R. Marchesi;Julian R. Marchesi;Jacques Ravel

  • Functional and comparative metagenomic analysis of bile salt hydrolase activity in the human gut microbiome

    Brian V. Jones;Máire Begley;Colin Hill;Cormac G. M. Gahan

  • A bacterial driver-passenger model for colorectal cancer: beyond the usual suspects.

    Harold Tjalsma;Annemarie Boleij;Julian Roberto Marchesi;Bas E. Dutilh

  • Comparative analysis of pyrosequencing and a phylogenetic microarray for exploring microbial community structures in the human distal intestine.

    Marcus J. Claesson;Orla O'Sullivan;Qiong Wang;Janne Nikkilä

  • Design and Evaluation of Useful Bacterium-Specific PCR Primers That Amplify Genes Coding for Bacterial 16S rRNA

    Unknown

  • Gut microbiota modulation of chemotherapy efficacy and toxicity

    James L. Alexander;James L. Alexander;Ian D. Wilson;Julian Teare;Julian Roberto Marchesi

  • Next-generation probiotics: the spectrum from probiotics to live biotherapeutics

    Paul W. O'Toole;Julian Roberto Marchesi;Julian Roberto Marchesi;Colin Hill

  • Diversity of Bifidobacteria within the Infant Gut Microbiota

    Francesca Turroni;Francesca Turroni;Clelia Peano;Daniel A. Pass;Elena Foroni

  • Rapid and Noninvasive Metabonomic Characterization of Inflammatory Bowel Disease

    Julian Roberto Marchesi;Elaine Holmes;Fatima Khan;Sunil Kochhar

  • Towards the Human Colorectal Cancer Microbiome

    Julian R. Marchesi;Bas E. Dutilh;Bas E. Dutilh;Neil Hall;Wilbert H. M. Peters

  • The vaginal microbiome during pregnancy and the postpartum period in a European population

    David A. MacIntyre;Manju Chandiramani;Yun S. Lee;Lindsay Kindinger

  • Gut Microbiota Composition and Activity in Relation to Host Metabolic Phenotype and Disease Risk

    Elaine Holmes;Jia V. Li;Julian Roberto Marchesi;Jeremy K. Nicholson

  • Metabolic surgery profoundly influences gut microbial–host metabolic cross-talk

    J. V. Li;H. Ashrafian;M. Bueter;M. Bueter;J. Kinross

  • Cervical intraepithelial neoplasia disease progression is associated with increased vaginal microbiome diversity

    A. Mitra;A. Mitra;D. A. MacIntyre;Y. S. Lee;A. Smith

  • The vaginal microbiota, human papillomavirus infection and cervical intraepithelial neoplasia: what do we know and where are we going next?

    Anita Mitra;Anita Mitra;David A. MacIntyre;Julian Roberto Marchesi;Julian Roberto Marchesi;Yun S. Lee

  • The vocabulary of microbiome research: a

    Julian R. Marchesi;Jacques Ravel

Frequent Co-Authors

Elaine Holmes
Elaine Holmes Imperial College London
Jeremy K. Nicholson
Jeremy K. Nicholson Murdoch University
Fergus Shanahan
Fergus Shanahan National University of Ireland
Phillip R. Bennett
Phillip R. Bennett Imperial College London
Alan D. W. Dobson
Alan D. W. Dobson University College Cork
Colin Hill
Colin Hill University College Cork
Mark Thursz
Mark Thursz Imperial College London
Andrew J. Weightman
Andrew J. Weightman Cardiff University
Eshwar Mahenthiralingam
Eshwar Mahenthiralingam Cardiff University
Roy D. Sleator
Roy D. Sleator Munster Technological University

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