Evidence map›Paper›PMID 26853542›Full record

ReviewHepatology (Baltimore, Md.)2016

Keratins: Biomarkers and modulators of apoptotic and necrotic cell death in the liver.

Nam-On Ku, Pavel Strnad, Heike Bantel, M Bishr Omary

Open access · greenAbstract readReview
In one paragraph

Review in Hepatology (Baltimore, Md.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

62 citing papers in PubMed, 1 synthesis or guideline pooled it, 121 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Observational
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Subclinical Hepatic Injury and Dysfunction Following Surgery: Evidence From a Young and Aged Laparotomy Murine Model.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  10. Article
  11. Article
  12. Recompensation of Liver Cirrhosis by TIPS Reduces Epithelial Cell Death Markers, Translating Into Improved Clinical Outcome.Liver international : official journal of the International Association for the Study of the Liver · 2025
    Article
  13. Review
  14. Article
  15. ACS central science · 2024
    Article
  16. Serum/Plasma Proteome in Non-Malignant Liver Disease.International journal of molecular sciences · 2024
    Review
  17. Article
  18. Review
  19. The Role of Carbamoyl Phosphate Synthetase 1 as a Prognostic Biomarker in Patients With Acetaminophen-induced Acute Liver Failure.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2023
    Article
  20. Article

2 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 4 institutions in 3 countries.

Nam-On KuDepartment of Integrated OMICS for Biomedical Science, Graduate School, Yonsei University, Seoul, Korea.
Pavel StrnadDepartment of Internal Medicine III and IZKF, University Hospital Aachen, Aachen, Germany.
Heike BantelDepartment of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.
M Bishr OmaryDepartment of Molecular & Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI.
Medizinische Hochschule Hannover · DEUniversitätsklinikum Aachen · DEVA Ann Arbor Healthcare System · USYonsei University · KR

Funding

Keratin Biology and Disease Aspects in Simple EpitheliaR01DK047918 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI OMARY, BISHR · 1995 to 2018
$6.6M
Regulation and Dynamics of Keratins in Digestive OrgansR01DK052951 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI OMARY, BISHR · 1997 to 2015
$4.5M
Genetic and molecular effects on hepatocyte nucleocytoplasm protein aggregationR56DK052951 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI OMARY, BISHR · 2012 to 2012
$179k
Intramural VA VA999999NIDDK NIH HHS R01 DK047918NIDDK NIH HHS R01 DK052951NIDDK NIH HHS R56 DK052951
6 · The paper itself

Abstract

unlabelledKeratins, formerly known as cytokeratins, are the major epithelial-specific subgroup of intermediate filament proteins. Adult hepatocytes express keratin polypeptides 8 and 18 (K8/K18), whereas cholangiocytes express K8/K18 and keratins 7 and 19 (K7/K19). Keratins function primarily to protect hepatocytes from apoptosis and necrosis, which was revealed using several genetic mouse models. This cytoprotective function was further clarified by the identification of natural human keratin variants that are normally silent, but become pathogenic by predisposing their carriers to apoptosis during acute or chronic liver injury mediated by toxins, virus infection, or metabolic stress. During apoptosis, caspases cleave K18 and K19 at conserved aspartates (human K18/K19: (235) Val-Glu-Val-Asp(↓) ) and K18 at a unique aspartate (human K18: (394) Asp-Ala-Leu-Asp(↓) ), with the latter exposed epitope becoming recognized by the M30 antibody in blood and tissues. Additional K18-containing protein backbone epitopes are detected using the M6 and M5 (termed M65) antibodies. Intact K18 and its associated fragments, which are released into blood during apoptosis and necrosis in various diseases, have been analyzed by enzyme-linked immunosorbent assay using the M30/M65 antibodies or their signal ratios. Furthermore, M30/M65 levels have been used as diagnostic and prognostic biomarkers in acute and chronic liver diseases, including nonalcoholic steatohepatitis and acute liver failure. Other keratin biomarkers include K8/K18/K19-related tissue polypeptide antigen, K18-related tissue polypeptide-specific antigen, and K19-related CYFRA-21-1, which have been evaluated mostly in patients with epithelial tumors.

conclusionKeratins and their fragments are released into blood during liver and other epithelial tissue injury. The epithelial specificity of K18/K19, epitope unmasking upon caspase digestion, keratin abundance, and relative keratin stability render them useful biomarkers for hepatocyte and cholangiocyte apoptosis and necrosis. However, the precise biochemical nature and release mechanism of circulating keratins remain unknown. (Hepatology 2016;64:966-976).

Indexed as

ApoptosisAnimalsBiomarkersCaspasesDisease ProgressionHumansKeratin-18LiverLiver DiseasesNecrosisProtein Processing, Post-TranslationalBiomarkersCaspasesKeratin-18

Identifiers

PMID26853542
PMCPMC4977204
OpenAlexW2268136456

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.