Abstract
Background
Research in rodents demonstrated that psychological stress increases circulating levels of alanine transaminase, aspartate transaminase, and alkaline phosphatase reflecting liver injury. Moreover, chronic posttraumatic stress disorder and transaminases predicted coronary heart disease.
Aims
To investigate the hypothesis that severity of posttraumatic stress disorder following myocardial infarction would prospectively relate to liver enzymes.
Methods
Study participants were 24 patients (mean 59 ± 7 years, 79% men) with an interviewer-rated diagnosis of posttraumatic stress disorder caused by an index myocardial infarction 3 ± 3 months before. After a mean follow-up of 26 ± 6 months, patients had a clinical interview to reassess posttraumatic stress disorder severity, a medical history, and blood collected to determine liver enzymes.
Results
Total posttraumatic stress disorder symptoms assessed at study entry prospectively predicted plasma levels of alanine transaminase (r = .47, p = .031) and alkaline phosphatase (r = .57, p = .004), but not of aspartate transaminase (p = .15), controlling for follow-up duration and antidepressant use. Total posttraumatic stress disorder symptoms assessed at follow-up were associated with alanine transaminase (r = .72, p = .004), aspartate transaminase (r = .60, p = .018), and alkaline phosphatase (r = .64, p = .001) in the 16 patients who had maintained diagnostic posttraumatic stress disorder, but not in all 24 patients.
Conclusions
The severity of posttraumatic stress disorder following myocardial infarction was associated with mild increase in liver enzyme levels, suggesting that chronic psychological stress relates to hepatic damage in humans. This might help to explain the previously observed increased cardiovascular risk in chronically traumatized individuals.
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Acknowledgments
The authors are grateful to Sabrina Imhasly, Cédric Lehner, Annette Kocher, Verena Mast, Edith Matz, and Iris Stamm for technical and editorial support.
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von Känel, R., Abbas, C.C., Begré, S. et al. Association Between Posttraumatic Stress Disorder Following Myocardial Infarction and Liver Enzyme Levels: A Prospective Study. Dig Dis Sci 55, 2614–2623 (2010). https://doi.org/10.1007/s10620-009-1082-z
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DOI: https://doi.org/10.1007/s10620-009-1082-z