World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
43
Citations
7721
World Ranking
19387
National Ranking
7915

Overview

James C. Ryan is affiliated with the University of California, San Francisco in the United States. Their research primarily focuses on the field of Medicine, with significant contributions to several subfields including Surgery, Infectious Diseases, Pulmonary and Respiratory Medicine, Immunology, and Economics and Econometrics.

Their work covers various important topics, such as COVID-19 Clinical Research Studies, Colorectal Cancer Screening and Detection, Gastric Cancer Management and Outcomes, Radiomics and Machine Learning in Medical Imaging, Bone fractures and treatments, Pelvic and Acetabular Injuries, and Trauma and Emergency Care Studies.

Notable recent papers authored by James C. Ryan include:

  • Artificial Intelligence for Real-Time Prediction of the Histology of Colorectal Polyps by General Endoscopists, 2024, Annals of Internal Medicine
  • Fate of the Uninsured Ankle Fracture: Significant Delays in Treatment Result in an Increased Risk of Surgical Site Infection, 2020, Journal of Orthopaedic Trauma
  • Skin closure with surgical staples in ankle fractures: a safe and reliable method, 2020, International Orthopaedics
  • Association of the patterns of use of medications with mortality of COVID-19 infection: a hospital-based observational study, 2021, BMJ Open
  • Treatable metabolic and inflammatory abnormalities in Post COVID Syndrome (PCS) define the transcriptomic basis for persistent symptoms: Lessons from CIRS, 2021, Medical Research Archives

Frequent co-authors collaborating with James C. Ryan include:

  • Boris A. Zelle
  • Case W. Martin
  • John Cabot
  • Leah Griffin
  • Travis S. Bullock

The scientist's work has been published in a variety of venues such as:

  • Annals of Internal Medicine
  • Journal of Orthopaedic Trauma
  • International Orthopaedics
  • BMJ Open
  • Medical Research Archives

Best Publications

  • Microarray validation: factors influencing correlation between oligonucleotide microarrays and real-time PCR

    Jeanine S. Morey;James C. Ryan;Frances M. Van Dolah

  • Binding and uptake of H-ferritin are mediated by human transferrin receptor-1

    Li Li;Celia J. Fang;James C. Ryan;Eréne C. Niemi

  • Differential expression of ZAP-70 and Syk protein tyrosine kinases, and the role of this family of protein tyrosine kinases in TCR signaling.

    A. C. Chan;N. S. C. Van Oers;A. Tran;L. Turka

  • Natural killer cell cytolytic activity is inhibited by NKG2-A and activated by NKG2-C.

    J P Houchins;L L Lanier;E C Niemi;J H Phillips

  • Mouse Ly-49A Interrupts Early Signaling Events in Natural Killer Cell Cytotoxicity and Functionally Associates with the SHP-1 Tyrosine Phosphatase

    Mary C. Nakamura;Eréne C. Niemi;Mark J. Fisher;Leonard D. Shultz

  • Cloning and characterization of a novel mouse myeloid DAP12-associated receptor family

    Michael R. Daws;Lewis L. Lanier;William E. Seaman;James C. Ryan

  • Beyond insulin resistance: Innate immunity in nonalcoholic steatohepatitis

    Jacquelyn J. Maher;Pablo Leon;Pablo Leon;James C. Ryan;James C. Ryan

  • Molecular cloning of the NK1.1 antigen, a member of the NKR-P1 family of natural killer cell activation molecules.

    J C Ryan;J Turck;E C Niemi;W M Yokoyama

  • cDNA cloning of mouse NKR-P1 and genetic linkage with LY-49. Identification of a natural killer cell gene complex on mouse chromosome 6.

    W. M. Yokoyama;J. C. Ryan;J. J. Hunter;H. R. C. Smith

  • Mouse Ly-49D Recognizes H-2Dd and Activates Natural Killer Cell Cytotoxicity

    Mary C. Nakamura;Paul A. Linnemeyer;Eréne C. Niemi;Llewellyn H. Mason

  • Divergent functions of lectin-like receptors on NK cells.

    James C. Ryan;William E. Seaman

  • NKR-P1, an activating molecule on rat natural killer cells, stimulates phosphoinositide turnover and a rise in intracellular calcium.

    J C Ryan;E C Niemi;R D Goldfien;J C Hiserodt

  • NKR-P1A is a target-specific receptor that activates natural killer cell cytotoxicity.

    J C Ryan;E C Niemi;M C Nakamura;W E Seaman

  • An autosomal dominant locus, Nka, mapping to the Ly-49 region of a rat natural killer (NK) gene complex, controls NK cell lysis of allogeneic lymphocytes.

    E Dissen;J C Ryan;W E Seaman;S Fossum

  • Gene Expression in Florida Red Tide Dinoflagellate Karenia brevis: Analysis of an Expressed Sequence Tag Library and Development of DNA Microarray

    Kristy B. Lidie;Kristy B. Lidie;James C. Ryan;Michele Barbier;Frances M. Van Dolah;Frances M. Van Dolah

  • Molecular Cloning of the cDNA Encoding pp36, a Tyrosine-phosphorylated Adaptor Protein Selectively Expressed by T Cells and Natural Killer Cells

    John R. Weber;Sigurd Ørstavik;Knut Martin Torgersen;Niels Christian Danbolt

  • IL-33 promotes growth and liver metastasis of colorectal cancer in mice by remodeling the tumor microenvironment and inducing angiogenesis.

    Yu Zhang;Celestia Davis;Sapana Shah;Daniel Hughes

  • INTERFERON GAMMA DERIVED FROM CD4+ T CELLS IS SUFFICIENT TO MEDIATE T HELPER CELL TYPE 1 DEVELOPMENT

    Adil E. Wakil;Zhi-En Wang;James C. Ryan;Deborah J. Fowell

  • A Visual Pigment Expressed in Both Rod and Cone Photoreceptors

    Jian Xing Ma;Sergey Znoiko;Kashelle L. Othersen;James C. Ryan

  • Expression of the Platelet Receptor GPVI Confers Signaling via the Fc Receptor γ-Chain in Response to the Snake Venom Convulxin but Not to Collagen

    Yun-Min Zheng;Changdong Liu;Hong Chen;Darren Locke

Frequent Co-Authors

Mary C. Nakamura
Mary C. Nakamura University of California, San Francisco
William E. Seaman
William E. Seaman University of California, San Francisco
Lewis L. Lanier
Lewis L. Lanier University of California, San Francisco
Rosalie K. Crouch
Rosalie K. Crouch Medical University of South Carolina
Randall S. Wells
Randall S. Wells Chicago Zoological Society
Jian Xing Ma
Jian Xing Ma University of Oklahoma Health Sciences Center
John R. Kucklick
John R. Kucklick National Institute of Standards and Technology
Luigi Abelli
Luigi Abelli University of Ferrara
Claude Szpirer
Claude Szpirer Université Libre de Bruxelles
Dominique Gauguier
Dominique Gauguier McGill University

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