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Friedrich Haag

Friedrich Haag

Universität Hamburg
Germany

D-Index & Metrics

Biology and Biochemistry

D-Index
66
Citations
12036
World Ranking
8876
National Ranking
646

Friedrich Haag publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Friedrich Haag sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 205 publications — 52nd percentile

52% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Friedrich Haag D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Friedrich Haag sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 66 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Friedrich Haag is affiliated with Universität Hamburg in Germany. Their research spans primarily the fields of Medicine and Immunology and Microbiology, with a focus on several subfields including Immunology, Infectious Diseases, Physiology, Hepatology, and Epidemiology.

The scientist's recent scholarly contributions include the following papers:

  • SARS-CoV2-specific Humoral and T-cell Immune Response After Second Vaccination in Liver Cirrhosis and Transplant Patients, 2021, Clinical Gastroenterology and Hepatology
  • Update of the simplified criteria for autoimmune hepatitis: Evaluation of the methodology for immunoserological testing, 2020, Journal of Hepatology
  • TIGIT blockade repolarizes AML-associated TIGIT+ M2 macrophages to an M1 phenotype and increases CD47-mediated phagocytosis, 2022, Journal for ImmunoTherapy of Cancer
  • B cell analysis in SARS-CoV-2 versus malaria: Increased frequencies of plasmablasts and atypical memory B cells in COVID-19, 2020, Journal of Leukocyte Biology
  • Targeting CD38-Expressing Multiple Myeloma and Burkitt Lymphoma Cells In Vitro with Nanobody-Based Chimeric Antigen Receptors (Nb-CARs), 2020, Cells

Frequent co-authors working alongside Friedrich Haag include:

  • Julian Schulze zur Wiesch
  • Friedrich Koch-Nolte
  • Marc Lütgehetmann
  • Marylyn M. Addo
  • Ansgar W. Lohse

The preferred venues for their publications are diverse but notably include multiple contributions to the following journals and publication platforms:

  • Frontiers in Immunology
  • Clinical Gastroenterology and Hepatology
  • Cells
  • Frontiers in Pharmacology
  • Methods in molecular biology

The main research topics explored by Friedrich Haag encompass:

  • Adenosine and Purinergic Signaling
  • SARS-CoV-2 and COVID-19 Research
  • Immune Cell Function and Interaction
  • COVID-19 Clinical Research Studies
  • Liver Diseases and Immunity
  • Monoclonal and Polyclonal Antibodies Research
  • Long-Term Effects of COVID-19

Best Publications

  • Single domain antibodies: promising experimental and therapeutic tools in infection and immunity.

    Janusz Wesolowski;Vanina Alzogaray;Jan Reyelt;Mandy Unger

  • Expansion of HIV-specific T follicular helper cells in chronic HIV infection.

    Madelene Lindqvist;Jan van Lunzen;Damien Z. Soghoian;Bjorn D. Kuhl

  • NAD-Induced T Cell Death: ADP-Ribosylation of Cell Surface Proteins by ART2 Activates the Cytolytic P2X7 Purinoceptor

    Michel Seman;Sahil Adriouch;Felix Scheuplein;Christian Krebs

  • In silico characterization of the family of PARP-like poly(ADP-ribosyl)transferases (pARTs).

    Helge Otto;Pedro A Reche;Fernando Bazan;Katharina Dittmar

  • Cutting edge: a natural P451L mutation in the cytoplasmic domain impairs the function of the mouse P2X7 receptor.

    Sahil Adriouch;Claudia Dox;Vivienne Welge;Michel Seman

  • Extracellular NAD+ shapes the Foxp3+ regulatory T cell compartment through the ART2–P2X7 pathway

    Sandra Hubert;Björn Rissiek;Katjana Klages;Jochen Huehn

  • The family of toxin-related ecto-ADP-ribosyltransferases in humans and the mouse.

    Gustavo Glowacki;Rickmer Braren;Kathrin Firner;Marion Nissen

  • Extracellular NAD and ATP: Partners in immune cell modulation.

    Friedrich Haag;Sahil Adriouch;Anette Braß;Caroline Jung

  • A PKR-like eukaryotic initiation factor 2α kinase from zebrafish contains Z-DNA binding domains instead of dsRNA binding domains

    Stefan Rothenburg;Nikolaus Deigendesch;Katharina Dittmar;Friedrich Koch-Nolte

  • A polymorphic dinucleotide repeat in the rat nucleolin gene forms Z-DNA and inhibits promoter activity.

    Stefan Rothenburg;Friedrich Koch-Nolte;Alexander Rich;Friedrich Haag

  • Expression of insulin-like factor 3 protein in the rat testis during fetal and postnatal development and in relation to cryptorchidism induced by in utero exposure to di (n-Butyl) phthalate.

    Chris McKinnell;Richard M. Sharpe;Kim Mahood;Nina Hallmark

  • ADP-ribosylation of arginine

    Sabrina Laing;Mandy Unger;Friedrich Koch-Nolte;Friedrich Haag

  • Effects of interleukin-2 plus highly active antiretroviral therapy on HIV-1 replication and proviral DNA (COSMIC trial).

    Hans-Jürgen Stellbrink;Jan van Lunzen;Michael Westby;Eithne O'Sullivan

  • NAD+ Released during Inflammation Participates in T Cell Homeostasis by Inducing ART2-Mediated Death of Naive T Cells In Vivo

    Sahil Adriouch;Sandra Hubert;Severine Pechberty;Friedrich Koch-Nolte;Friedrich Koch-Nolte

  • ADP-ribosylation at R125 gates the P2X7 ion channel by presenting a covalent ligand to its nucleotide binding site

    Sahil Adriouch;Peter Bannas;Nicole Schwarz;Ralf Fliegert

  • Single domain antibodies from llama effectively and specifically block T cell ecto-ADP-ribosyltransferase ART2.2 in vivo

    Friedrich Koch-Nolte;Jan Reyelt;Britta Schößow;Nicole Schwarz

  • NAD+ and ATP Released from Injured Cells Induce P2X7-Dependent Shedding of CD62L and Externalization of Phosphatidylserine by Murine T Cells

    Felix Scheuplein;Nicole Schwarz;Sahil Adriouch;Christian Krebs

  • Nanobodies that block gating of the P2X7 ion channel ameliorate inflammation.

    Welbeck Danquah;Catherine Meyer-Schwesinger;Björn Rissiek;Carolina Pinto

  • Compartmentation of NAD+-dependent Signalling

    Friedrich Koch-Nolte;Stefan Fischer;Friedrich Haag;Mathias Ziegler

  • Ecto-ADP-Ribosyltransferases (ARTs): Emerging Actors in Cell Communication and Signaling

    Michel Seman;Sahil Adriouch;Friedrich Haag;Friedrich Koch-Nolte

Frequent Co-Authors

Friedrich Koch-Nolte
Friedrich Koch-Nolte Universität Hamburg
Edward H. Leiter
Edward H. Leiter The Jackson Laboratory
Olivier Boyer
Olivier Boyer University of Rouen
Hans-Willi Mittrücker
Hans-Willi Mittrücker Universität Hamburg
Nicolaus Kröger
Nicolaus Kröger Universität Hamburg
Carsten Bokemeyer
Carsten Bokemeyer Universität Hamburg
Sebastian Kobold
Sebastian Kobold Ludwig-Maximilians-Universität München
Marylyn M. Addo
Marylyn M. Addo Universität Hamburg
George R. Dubyak
George R. Dubyak Case Western Reserve University
Marc Lütgehetmann
Marc Lütgehetmann University Medical Center Hamburg-Eppendorf

External Links

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Best Scientists Citing Friedrich Haag

Friedrich Koch-Nolte

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Publications: 49

Joel Moss

Joel Moss

National Institutes of Health

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Publications: 28

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Vrije Universiteit Brussel

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George P. Anderson

Yale University

Publications: 26

Francesco Di Virgilio

Francesco Di Virgilio

University of Ferrara

Publications: 25

Fabio Malavasi

Fabio Malavasi

University of Turin

Publications: 24

Anthony D. Kelleher

Anthony D. Kelleher

University of New South Wales

Publications: 23

Michael O. Hottiger

Michael O. Hottiger

University of Zurich

Publications: 22

Klaus Aktories

Klaus Aktories

University of Freiburg

Publications: 22

Ivan Ahel

Ivan Ahel

University of Oxford

Publications: 19

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Mathias Ziegler

University of Bergen

Publications: 19

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John Zaunders

Ascension Health

Publications: 18

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Rolf A.K. Stahl

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Publications: 18

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Bernhard Lüscher

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