Cholinergic stimulation blocks endothelial cell activation and leukocyte recruitment during inflammation
Open accessAbstract
Endothelial cell activation plays a critical role in regulating leukocyte recruitment during inflammation and infection. Based on recent studies showing that acetylcholine and other cholinergic mediators suppress the production of proinflammatory cytokines via the α7 nicotinic acetylcholine receptor (α7 nAChR) expressed by macrophages and our observations that human microvascular endothelial cells express the α7 nAChR, we examined the effect of cholinergic stimulation on endothelial cell activation in vitro and in vivo. Using the Shwartzman reaction, we observed that nicotine (2 mg/kg) and the novel cholinergic agent CAP55 (12 mg/kg) inhibit endothelial cell adhesion molecule expression. Using endothelial cell cultures, we observed the direct inhibitory effects of acetylcholine and cholinergic agents on tumor necrosis factor (TNF)-induced endothelial cell activation. Mecamylamine, an nAChR antagonist, reversed the inhibition of endothelial cell activation by both cholinergic agonists, confirming the antiinflammatory role of the nAChR cholinergic pathway. In vitro mechanistic studies revealed that nicotine blocked TNF-induced nuclear factor–κB nuclear entry in an inhibitor κB (IκB)α- and IκBε-dependent manner. Finally, with the carrageenan air pouch model, both vagus nerve stimulation and cholinergic agonists significantly blocked leukocyte migration in vivo. These findings identify the endothelium, a key regulator of leukocyte trafficking during inflammation, as a target of anti-inflammatory cholinergic mediators.
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Vagus nerve stimulation in a subcutaneous carrageenan air pouch model significantly inhibits recruitment of polymorphonuclear leukocytes to the inflammatory zone.
“Vagus nerve stimulation of mice in a model of subcutaneous inflammation caused by injecting carrageenan into an air pouch significantly inhibited the recruitment of polymorphonuclear leukocytes to the inflammatory zone (25).”
From Physiology and immunology of the cholinergic antiinflammatory pathway (2007) · cites this paper as [25]
Cholinergic stimulation controls endothelial activation, leukocyte recruitment, coagulation, and fibrinolysis, which modulates the development of damage during sepsis.
“Other studies indicate that cholinergic stimulation controls endothelial activation, leukocyte recruitment, coagulation, and fibrinolysis, which modulates the development of damage during sepsis (25,36).”
From Physiology and immunology of the cholinergic antiinflammatory pathway (2007) · cites this paper as [25]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Cites
Vagus nerve stimulation attenuates the systemic inflammatory response to endotoxin
Borovikova, L. V., Ivanova, S., Zhang, M., Yang, H., Botchkina, G. I., Watkins, L. R., Wang, H., Abumrad, N., Eaton, J. W., & Tracey, K. J. (2000) · Nature · doi:10.1038/35013070 · Cited by 4,211 · see citing works
Self-citationTracey, K. J. (2002) · Nature · doi:10.1038/nature01321 · Cited by 3,728 · see citing works
Self-citationNicotinic acetylcholine receptor α7 subunit is an essential regulator of inflammation
Wang, H., Yu, M., Ochani, M., Amella, C. A., Tanovic, M., Susarla, S., Li, J. H., Wang, H., Yang, H., Ulloa, L., et al. (2003) · Nature · doi:10.1038/nature01339 · Cited by 3,228 · see citing works
Self-citationEndothelial cells in physiology and in the pathophysiology of vascular disorders.
Cines, D. B., Pollak, E. S., Buck, C. A., Loscalzo, J., Zimmerman, G. A., McEver, R. P., Pober, J. S., Wick, T. M., Konkle, B. A., Schwartz, B. S., et al. (1998) · PubMed · doi:10.1182/blood.v91.10.3527 · Cited by 2,244 · see citing works
A highly efficacious lymphocyte chemoattractant, stromal cell-derived factor 1 (SDF-1)
Bleul, C. C., Fuhlbrigge, R. C., Casasnovas, J. M., Aiuti, A., & Springer, T. A. (1996) · The Journal of experimental medicine · doi:10.1084/jem.184.3.1101 · Cited by 1,482 · see citing works
Cholinergic agonists inhibit HMGB1 release and improve survival in experimental sepsis
Wang, H., Liao, H., Ochani, M., Justiniani, M., Lin, X., Yang, L., Al-Abed, Y., Wang, H., Metz, C., Miller, E. J., et al. (2004) · Nature Medicine · doi:10.1038/nm1124 · Cited by 1,170 · see citing works
Self-citationCronstein, B. N., Kimmel, S. C., Levin, R. I., Martiniuk, F. T., & Weissmann, G. (1992) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.89.21.9991 · Cited by 725 · see citing works
Transdermal Nicotine for Active Ulcerative Colitis
Pullan, R. D., Rhodes, J., Ganesh, S., Mani, V., Morris, J. S., Williams, G. T., Newcombe, R. G., Russell, M., Feyerabend, C., Thomas, G., et al. (1994) · New England Journal of Medicine · doi:10.1056/nejm199403243301202 · Cited by 505 · see citing works
I kappa B epsilon, a novel member of the IκB family, controls RelA and cRel NF‐κB activity
Whiteside, S. T., Epinat, J.-C., Rice, N. R., & Israël, A. (1997) · The EMBO Journal · doi:10.1093/emboj/16.6.1413 · Cited by 396 · see citing works
Role of vagus nerve signaling in CNI-1493-mediated suppression of acute inflammation
Borovikova, L. V., Ivanova, S., Nardi, D., Zhang, M., Yang, H., Ombrellino, M., & Tracey, K. J. (2000) · Autonomic Neuroscience · doi:10.1016/s1566-0702(00)00233-2 · Cited by 322 · see citing works
Self-citationA novel angiogenic pathway mediated by non-neuronal nicotinic acetylcholine receptors
Heeschen, C., Weis, M., Aicher, A., Dimmeler, S., & Cooke, J. P. (2002) · Journal of Clinical Investigation · doi:10.1172/jci14676 · Cited by 320 · see citing works
Sandborn, W. J., Tremaine, W. J., Offord, K. P., Lawson, G. M., Petersen, B. T., Batts, K. P., Croghan, I. T., Dale, L. C., Schroeder, D. R., & Hurt, R. D. (1997) · Annals of Internal Medicine · doi:10.7326/0003-4819-126-5-199703010-00004 · Cited by 259 · see citing works
A novel angiogenic pathway mediated by non-neuronal nicotinic acetylcholine receptors
Heeschen, C., Weis, M., Aicher, A., Dimmeler, S., & Cooke, J. P. (2002) · Journal of Clinical Investigation · doi:10.1172/jci0214676 · Cited by 257 · see citing works
Human Vascular Endothelial Cells Express Functional Nicotinic Acetylcholine Receptors
Macklin, K. D., Maus, A. D. J., Pereira, E. F. R., Albuquerque, E. X., & Conti‐Fine, B. M. (1998) · Journal of Pharmacology and Experimental Therapeutics · doi:10.1016/s0022-3565(24)37807-3 · Cited by 247 · see citing works
Integration of inflammatory signals by rolling neutrophils
Ley, K. F. (2002) · Immunological Reviews · doi:10.1034/j.1600-065x.2002.18602.x · Cited by 242 · see citing works
Simon, S. I., Hu, Y., Vestweber, D., & Smith, C. W. (2000) · The Journal of Immunology · doi:10.4049/jimmunol.164.8.4348 · Cited by 238 · see citing works
Nicotine stimulates DNA synthesis and proliferation in vascular endothelial cells in vitro
Villablanca, A. C. (1998) · Journal of Applied Physiology · doi:10.1152/jappl.1998.84.6.2089 · Cited by 227 · see citing works
Hidari, K. I. P. J., Weyrich, A. S., Zimmerman, G. A., & McEver, R. P. (1997) · Journal of Biological Chemistry · doi:10.1074/jbc.272.45.28750 · Cited by 223 · see citing works
Human Bronchial Epithelial and Endothelial Cells Express α7 Nicotinic Acetylcholine Receptors
Wang, Y., Pereira, E. F. R., Maus, A. D. J., Ostlie, N. S., Navaneetham, D., Lei, S., Albuquerque, E. X., & Conti-Fine, B. M. (2001) · Molecular Pharmacology · doi:10.1124/mol.60.6.1201 · Cited by 218 · see citing works
Inhibition of Neutrophil and Monocyte Defensive Functions by Nicotine
Pabst, M. J., Pabst, K. M., Collier, J. A., Coleman, T. C., Lemons‐Prince, M. L., Godat, M. S., Waring, M. B., & Babu, J. P. (1995) · Journal of Periodontology · doi:10.1902/jop.1995.66.12.1047 · Cited by 200 · see citing works
Abbruscato, T. J., Lopez, S. P., Mark, K. S., Hawkins, B. T., & Davis, T. P. (2002) · Journal of Pharmaceutical Sciences · doi:10.1002/jps.10256 · Cited by 182 · see citing works
García-Ramallo, E., Marques, T., Prats, N., Beleta, J., Kunkel, S. L., & Godessart, N. (2002) · The Journal of Immunology · doi:10.4049/jimmunol.169.11.6467 · Cited by 178 · see citing works
Leukocyte Arrest During Cytokine-Dependent Inflammation In Vivo
Kunkel, E. J., Dunne, J. L., & Ley, K. F. (2000) · The Journal of Immunology · doi:10.4049/jimmunol.164.6.3301 · Cited by 167 · see citing works
Sherry, B. A., Alava, G., Tracey, K. J., Martiney, J. A., Cerami, A., & Slater, A. F. G. (1995) · PubMed · Cited by 158 · see citing works
Self-citationAcute and chronic nicotine effects on working memory in aged rats
Levin, E. D., & Torry, D. J. (1996) · Psychopharmacology · doi:10.1007/bf02246285 · Cited by 150 · see citing works
The antinociceptive effects of α7 nicotinic agonists in an acute pain model
Damaj, M. I., Meyer, E. M., & Martin, B. R. (2000) · Neuropharmacology · doi:10.1016/s0028-3908(00)00139-8 · Cited by 138 · see citing works
The Pharmacology of (-)-Nicotine and Novel Cholinergic Channel Modulators
Brioni, J. D., Decker, M. W., Sullivan, J. P., & Arnerić, S. P. (1996) · Advances in pharmacology · doi:10.1016/s1054-3589(08)60950-3 · Cited by 137 · see citing works
Wu, D., Koga, T., Martin, K. R., & Meydani, M. (1999) · Atherosclerosis · doi:10.1016/s0021-9150(99)00199-9 · Cited by 127 · see citing works
A New Member of the IκB Protein Family, IκBε, Inhibits RelA (p65)-Mediated NF-κB Transcription
Li, Z., & Nabel, G. J. (1997) · Molecular and Cellular Biology · doi:10.1128/mcb.17.10.6184 · Cited by 117 · see citing works
Sugano, N., Shimada, K., Ito, K., et al. (1998) · Biochemical and Biophysical Research Communications · doi:10.1006/bbrc.1998.9599 · Cited by 115 · see citing works
Fu, Y.-T., Matta, S. G., James, T. J., & Sharp, B. M. (1998) · Journal of Pharmacology and Experimental Therapeutics · doi:10.1016/s0022-3565(24)37341-0 · Cited by 92 · see citing works
Cloning and functional characterization of mouse IκBɛ
Simeonidis, S., Liang, S., Chen, G., & Thanos, D. (1997) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.94.26.14372 · Cited by 90 · see citing works
Nicotine-Induced Modulation of T Cell Function
Sopori, M. L., Kozak, W., Savage, S. M., et al. (1998) · Advances in experimental medicine and biology · doi:10.1007/978-1-4615-5347-2_31 · Cited by 87 · see citing works
Abdulla, F. A., Gray, J. A., Sinden, J. D., Bradbury, E. J., Calaminici, M., Lippiello, P. M., & Wonnacott, S. (1996) · Psychopharmacology · doi:10.1007/bf02247437 · Cited by 85 · see citing works
Perez, R. P., Godwin, A. K., Handel, L. M., et al. (1993) · European Journal of Cancer · doi:10.1016/0959-8049(93)90394-u · Cited by 79 · see citing works
Different pathways leading to cutaneous leukocytoclastic vasculitis in mice
Sunderkötter, C. H., Seeliger, S., Schönlau, F., et al. (2001) · Experimental Dermatology · doi:10.1034/j.1600-0625.2001.100602.x · Cited by 72 · see citing works
An investigation into the effect and mechanisms of action of nicotine in inflammatory bowel disease
Sykes, A. P., Brampton, C. N., Klee, S., Chander, C. L., Whelan, C. J., & Parsons, M. E. (2000) · Inflammation Research · doi:10.1007/s000110050597 · Cited by 71 · see citing works
Nicotinic cholinergic receptors: potential targets for inflammatory pain relief
Lawand, N., Lu, Y. C., & Westlund, K. N. (1999) · Pain · doi:10.1016/s0304-3959(98)00221-8 · Cited by 64 · see citing works
Expression and function of neuronal nicotinic ACh receptors in rat microvascular endothelial cells
Moccia, F. D., Frost, C., Berra‐Romani, R., et al. (2004) · American Journal of Physiology-Heart and Circulatory Physiology · doi:10.1152/ajpheart.00620.2003 · Cited by 63 · see citing works
Nicotine inhibits cytokine synthesis by mouse colonic mucosa
Dijk, J. P. M. V., Madretsma, G. S., Keuskamp, Z. J., & Zijlstra, F. J. (1995) · European Journal of Pharmacology · doi:10.1016/0014-2999(95)00211-3 · Cited by 58 · see citing works
Middlebrook, A. J., Martina, C., Chang, Y., et al. (2002) · The Journal of Immunology · doi:10.4049/jimmunol.169.6.2915 · Cited by 57 · see citing works
Involvement of calcium and L-type channels in nicotine-induced antinociception.
Damaj, M. I., Welch, S. P., & Martin, B. R. (1993) · Journal of Pharmacology and Experimental Therapeutics · doi:10.1016/s0022-3565(25)39326-2 · Cited by 55 · see citing works
Branch, D. R., Shah, A., & Guilbert, L. J. (1991) · Journal of Immunological Methods · doi:10.1016/0022-1759(91)90050-p · Cited by 50 · see citing works
Nicotinic acetylcholine receptor subunits and receptor activity in the epithelial cell line HT29
Summers, A. E., Whelan, C. J., & Parsons, M. E. (2003) · Life Sciences · doi:10.1016/s0024-3205(03)00089-4 · Cited by 45 · see citing works
Woodruff‐Pak, D. S. (2003) · Behavioural Brain Research · doi:10.1016/s0166-4328(03)00039-1 · Cited by 44 · see citing works
Nicotine modulation of apoptosis in human coronary artery endothelial cells
Hakki, A., Friedman, H. P., & Pross, S. H. (2002) · International Immunopharmacology · doi:10.1016/s1567-5769(02)00059-0 · Cited by 33 · see citing works
Eliakim, R., & Karmeli, F. (2003) · PubMed · Cited by 31 · see citing works
Pilot trial of nicotine patches as an alternative to corticosteroids in ulcerative colitis
Guslandi, M., & Tittobello, A. (1996) · Journal of Gastroenterology · doi:10.1007/bf02355071 · Cited by 28 · see citing works
Flagged first, then by citations
Research works printed but not linked: 1
- [43]Garcia-Ramallo, E., T. Marques, N. Prats, J. Beleta, S.L. Kunkel, and N. Godessart. 2002. Resident cell chemokine expression serves as the major mechanism for leukocyte recruitment during local inflammation. J. Immunol. 169: 6467–6473. 12444156
Cited by
Sorted by citations
Physiology and immunology of the cholinergic antiinflammatory pathway
Tracey, K. J. (2007) · Journal of Clinical Investigation · doi:10.1172/jci30555 · Cited by 1,563 · see citing works
Self-citationTracey, K. J. (2009) · Nature Reviews Immunology · doi:10.1038/nri2566 · Cited by 1,154 · see citing works
“Direct electrical stimulation of the cholinergic anti-inflammatory pathway with electrodes that generate action potentials in the vagus nerve significantly inhibits cytokine production by innate immune cells in the spleen, liver, gastrointestinal tract, heart and other tissues that are innervated by the vagus nerv”
BackgroundSelf-citationNeural regulation of innate immunity: a coordinated nonspecific host response to pathogens
Sternberg, E. M. (2006) · Nature Reviews Immunology · doi:10.1038/nri1810 · Cited by 1,064 · see citing works
Autonomic innervation and regulation of the immune system (1987–2007)
Nance, D. M., & Sanders, V. M. (2007) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2007.03.008 · Cited by 855 · see citing works
Huston, J. M., Ochani, M., Rosas-Ballina, M., Liao, H., Ochani, K., Pavlov, V. A., Gallowitsch-Puerta, M., Ashok, M., Czura, C. J., Foxwell, B., et al. (2006) · The Journal of Experimental Medicine · doi:10.1084/jem.20052362 · Cited by 683 · see citing works
Self-citationMolecular and functional neuroscience in immunity
Pavlov, V. A., Chavan, S. S., & Tracey, K. J. (2018) · Annual Review of Immunology · doi:10.1146/annurev-immunol-042617-053158 · Cited by 444 · see citing works
Self-citationReflex principles of immunological homeostasis
Andersson, U., & Tracey, K. J. (2012) · Annual Review of Immunology · doi:10.1146/annurev-immunol-020711-075015 · Cited by 414 · see citing works
Self-citationRethinking inflammation: neural circuits in the regulation of immunity
Olofsson, P. S., Rosas‐Ballina, M., Levine, Y. A., & Tracey, K. J. (2012) · Immunological Reviews · doi:10.1111/j.1600-065x.2012.01138.x · Cited by 393 · see citing works
Self-citationSepsis-associated encephalopathy: A vicious cycle of immunosuppression
Ren, C., Yao, R.-Q., Zhang, H., Feng, Y.-W., & Yao, Y.-M. (2020) · Journal of Neuroinflammation · doi:10.1186/s12974-020-1701-3 · Cited by 259 · see citing works
Neural Regulation of Hematopoiesis, Inflammation, and Cancer
Hanoun, M., Maryanovich, M., Arnal-Estapé, A., & Frenette, P. S. (2015) · Neuron · doi:10.1016/j.neuron.2015.01.026 · Cited by 265 · see citing works
Pavlov, V. A., & Tracey, K. J. (2015) · Immunologic Research · doi:10.1007/s12026-015-8718-1 · Cited by 254 · see citing works
Self-citationAutonomic neural regulation of immunity
CZURA, C. J., & TRACEY, K. J. (2005) · Journal of Internal Medicine · doi:10.1111/j.1365-2796.2004.01442.x · Cited by 255 · see citing works
Self-citationControl of Leukocyte Trafficking by Stress-Associated Hormones
Ince, L. M., Weber, J., & Scheiermann, C. (2019) · Frontiers in Immunology · doi:10.3389/fimmu.2018.03143 · Cited by 168 · see citing works
Role of peripheral nerve fibres in acute and chronic inflammation in arthritis
Pongratz, G., & Straub, R. H. (2013) · Nature Reviews Rheumatology · doi:10.1038/nrrheum.2012.181 · Cited by 149 · see citing works
Influenza virus infection aggravates stroke outcome
Muhammad, S., Haasbach, E., Kotchourko, M., Strigli, A., Krenz, A., Ridder, D. A., Vogel, A. B., Marti, H. H., Al-Abed, Y., Planz, O., et al. (2011) · Stroke · doi:10.1161/strokeaha.110.596783 · Cited by 116 · see citing works
Self-citationNeural regulation of bone and bone marrow
Maryanovich, M., Takeishi, S., & Frenette, P. S. (2018) · Cold Spring Harbor Perspectives in Medicine · doi:10.1101/cshperspect.a031344 · Cited by 114 · see citing works
VAN WESTERLOO, D. J., GIEBELEN, I. A. J., MEIJERS, J. C. M., DAALHUISEN, J., DE VOS, A. F., LEVI, M., & VAN DER POLL, T. (2006) · Journal of Thrombosis and Haemostasis · doi:10.1111/j.1538-7836.2006.02112.x · Cited by 84 · see citing works
Keever, K. R., Yakubenko, V. P., & Hoover, D. B. (2023) · Pharmacological Research · doi:10.1016/j.phrs.2023.106758 · Cited by 82 · see citing works
Kiank, C., Holtfreter, B., Starke, A., Mundt, A., Wilke, C., & Schütt, C. (2006) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2005.10.151 · Cited by 76 · see citing works
Autonomic regulation of liver regeneration after partial hepatectomy in mice
Ikeda, O., Ozaki, M., Murata, S., Matsuo, R., Nakano, Y., Watanabe, M., Hisakura, K., Myronovych, A., Kawasaki, T., Kohno, K., et al. (2009) · Journal of Surgical Research · doi:10.1016/j.jss.2008.02.059 · Cited by 32 · see citing works
- Authors
- Saeed, R. W., Varma, S., Peng-Nemeroff, T., Sherry, B., Balakhaneh, D., Huston, J., Tracey, K. J., Al-Abed, Y., & Metz, C. N.
- Affiliations
- Northwell Health (US)
- 1Laboratory of Medicinal Biochemistry, Institute for Medical Research at North Shore–LIJ, Manhasset, NY 11030
- 2Laboratory of Chemokine Biology, Institute for Medical Research at North Shore–LIJ, Manhasset, NY 11030
- 3Laboratory of Medicinal Chemistry, Institute for Medical Research at North Shore–LIJ, Manhasset, NY 11030
- Venue
- The Journal of Experimental Medicine
- Publisher
- Rockefeller University Press
- Published
- 2005-04-04
- Volume
- 201
- Issue
- 7
- Pages
- 1113-1123
- ISSN
- 0022-1007 (ISSN-L)
- 1540-9538
- PMC
- PMC2213139
- OpenAlex
- W2151660617
- Cited by
- 489
- References
- 48
- Citations by year
- 2026: 6 · 2025: 8 · 2024: 18 · 2023: 13 · 2022: 18 · 2021: 19 · 2020: 17 · 2019: 19 · 2018: 21 · 2017: 23 · 2016: 27 · 2015: 38 · 2014: 25 · 2013: 27 · 2012: 25
- FWCI
- 16.70
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Journal of Experimental Medicine (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
- PubMed Central (publishedVersion, cc-by-nc-sa)
- PubMed (publishedVersion)
- Funders
- Defense Advanced Research Projects Agency
- Advanced Research Projects Agency
- National Institute of General Medical Sciences
- National Institute of Allergy and Infectious Diseases
- National Center for Research Resources (M01RR018535)
- Topics
- Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
- Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
- Keywords
- cholinergic anti-inflammatory pathway, endothelial activation, alpha7 nicotinic acetylcholine receptor, acetylcholine, nicotine, leukocyte recruitment, leukocyte migration, IκBα, IκBε, vagus nerve stimulation, Shwartzman reaction, microvascular endothelial cells, inflammation
- MeSH terms
- Acetylcholine, Animals, Carrageenan, Cell Migration Inhibition, Enzyme-Linked Immunosorbent Assay, Female, Flow Cytometry, Humans, Inflammation, Leukocytes, Mecamylamine, Mice, Inbred BALB C, Nicotine, Phagocytes, Receptors, Nicotinic, Shwartzman Phenomenon, Tumor Necrosis Factor-alpha, Vagus Nerve, Blotting, Western, Cell Adhesion Molecules, DNA Primers, Cholinergic Agents, Nicotinic Antagonists, Reverse Transcriptase Polymerase Chain Reaction, Endothelial Cells, Mice, alpha7 Nicotinic Acetylcholine Receptor
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review