The DOI matches its Crossref record.
Metalloenzymes and Myocardial Infarction: Malic and Lactic Dehydrogenase Activities and Zinc Concentrations in Serum
Abstract
PREVIOUS studies in this laboratory have shown that the concentration of copper in serum is considerably increased after acute myocardial infarction.1 This change is proportional to an increase in ceruloplasmin, the copper protein of human serum, and its capacity to oxidize paraphenylenediamine.2 In the pursuit of these studies, the concentration of zinc and the activity of zinc enzymes in human serum have been found to be altered markedly in myocardial necrosis.Lactic dehydrogenase has recently been shown to be a zinc enzyme,3 and malic dehydrogenase also appears to be a metalloenzyme.4 These enzymes require coenzyme 1 (diphosphopyridine nucleotide) for their . . .
Overview
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
Verification
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.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Goldstein, I. M., Roos, D., Kaplan, H. B., & Weissmann, G. (1975) · Journal of Clinical Investigation · doi:10.1172/jci108191 · Cited by 746
Clancy, R. M., Leszczynska-Piziak, J., & Abramson, S. B. (1992) · Journal of Clinical Investigation · doi:10.1172/jci115929 · Cited by 686
Thompson, C. B., Eaton, K. A., Princiotta, S. M., Rushin, C. A., & Valeri, C. R. (1982) · British Journal of Haematology · doi:10.1111/j.1365-2141.1982.tb01947.x · Cited by 375
Metadata
- Authors
- Wacker, W. E. C., Ulmer, D. D., & Vallee, B. L.
- Venue
- New England Journal of Medicine
- Publisher
- Massachusetts Medical Society
- Published
- 1956-09-06
- Volume
- 255
- Issue
- 10
- Pages
- 449-456
- ISSN
- 0028-4793 (ISSN-L)
- 1533-4406
- OpenAlex
- W3154367256
- Cited by
- 655
- References
- 0
- FWCI
- 18.76
- Type
- journal article
- Language
- en
- Open access
- closed
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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Metalloenzymes and Myocardial Infarction: Malic and Lactic Dehydrogenase Activities and Zinc Concentrations in Serum. https://app.cochat.ai/papers/10.1056/nejm195609062551001
- The paper
- Wacker, W. E. C., Ulmer, D. D., & Vallee, B. L. (1956). Metalloenzymes and Myocardial Infarction: Malic and Lactic Dehydrogenase Activities and Zinc Concentrations in Serum. New England Journal of Medicine. https://doi.org/10.1056/nejm195609062551001
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.