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Gastrointestinal Dysfunction after Traumatic Brain Injury: Mechanisms Linking The Gut, Inflammation, and the HPA Axis

1 Master’s Programme in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
2 Department of Biochemistry  Molecular Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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Abstract

Traumatic brain injury (TBI) is a major global health problem that often leads to systemic complications beyond neurological damage, notably gastrointestinal (GI) dysfunction. The mechanisms linking TBI to GI complications remain inconclusive. We conducted a systematic review using current clinical evidence on the pathophysiological processes underlying post-TBI GI dysfunction, focusing on two principal mechanisms: inflammatory-oxidative processes and hypothalamic–pituitary–adrenal (HPA) axis alterations. A comprehensive search was conducted through PubMed, Cochrane Library, and Scopus to identify eligible studies. Evidence indicates that surges of proinflammatory mediators and chemokines, along with reduced anti-inflammatory mediators, drive systemic immune imbalance. Moreover, iNOS upregulation and gut microbiota dysbiosis contribute to mucosal injury. Concurrently, HPA axis dysregulation exerts a bidirectional impact. Elevated ACTH and cortisol reflect an intact stress response that may stabilise metabolism if combined with early enteral nutrition, whereas critical illness-related corticosteroid insufficiency (CIRCI) and hypergastrinemia are strongly associated with gastrointestinal bleeding and mortality. Together, these findings underscore the synergistic role of inflammatory and endocrine disturbances in driving gastrointestinal vulnerability after TBI. Understanding these mechanisms is crucial for developing biomarker-based monitoring and targeted interventions to improve prognosis and reduce GI-related complications in TBI patients.

Author Biographies

D

Dwi Hastuti

Indonesia
Master’s Programme in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia

Master’s Programme in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia

S

Sri Widia A Jusman

Indonesia
Department of Biochemistry  Molecular Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia

Department of Biochemistry & Molecular Biology, Faculty of Medicine , Universitas Indonesia, Jakarta, Indonesia

R

Reni Paramita

Indonesia
Department of Biochemistry  Molecular Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia

Department of Biochemistry & Molecular Biology, Faculty of Medicine , Universitas Indonesia, Jakarta, Indonesia

References

1
[1] Yan, J., Wang, C., & Sun, B. (2025). Global, regional, and national burdens of traumatic brain injury from 1990 to 2021. Frontiers in public health, 13, 1556147.
2
[2] Zhong, H., Feng, Y., Shen, J., Rao, T., Dai, H., Zhong, W., & Zhao, G. (2025). Global burden of traumatic brain injury in 204 countries and territories from 1990 to 2021. American journal of preventive medicine.
3
[3] Orr, T. J., Emal Lesha, Kramer, A. H., Arba Cecia, Dugan, J. E., Schwartz, B., & Einhaus, S. L. (2024). Traumatic brain injury: a comprehensive review of biomechanics and molecular pathophysiology. World Neurosurg., 185–185.
4
[4] Ng, S. Y., & Lee, A. Y. W. (2019). Traumatic brain injuries: pathophysiology and potential therapeutic targets. Front Cell Neurosci. Frontiers Media S.A.
5
[5] Freire, M. A. M., Rocha, G. S., Bittencourt, L. O., Falcao, D., Lima, R. R., & Cavalcanti, J. R. L. P. (2023, August 1). Cellular and Molecular Pathophysiology of Traumatic Brain Injury: What Have We Learned So Far? Biology. Multidisciplinary Digital Publishing Institute (MDPI).
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How to Cite

1.
Gastrointestinal Dysfunction after Traumatic Brain Injury: Mechanisms Linking The Gut, Inflammation, and the HPA Axis. EKSAKTA [Internet]. 2025 Dec. 30 [cited 2026 Aug. 22];26(04):423-39. Available from: https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/601