LC–MS/MS Reveals Metabolic Shifts After Ebola

People who survive Ebola virus disease (EVD) often continue to experience health problems long after the initial illness has passed, a condition known as post-Ebola syndrome (PES). It is still unclear why some survivors develop these lingering problems while others do not. While earlier research has shown that Ebola disrupts the body's chemistry during the initial infection, no one had looked at whether these changes persist in people with PES. To find out, researchers compared the blood chemistry of survivors who had ongoing symptoms with that of survivors who had recovered fully, as well as people who lived in the same households. Using liquid chromatography-tandem mass spectrometry (LC-MS/MS), they looked for differences in how the body processes substances and for possible markers that could signal post-Ebola syndrome. Their findings were published in the journal Metabolomics.¹

Why Study the Body Chemistry of Ebola Survivors?

Studying the chemicals in the body can reveal how a viral infection changes the way it works and point to possible signs of lingering health problems afterward. Even so, this approach has rarely been used to study long-term effects of viral infections, though some work has been done on long COVID and on HIV.^2,3 Earlier research has shown that Ebola can change how cells process fats and proteins, and that people who died from Ebola had lower levels of certain protein building blocks in their blood.^4,5 However, the authors of the paper report that no one has yet identified chemical signs of post-Ebola syndrome. This left open the question of whether these chemical changes continue in survivors with lingering symptoms, and what that might mean. The researchers expected that survivors with post-Ebola syndrome would have a distinct chemical pattern compared with survivors who had recovered fully, and they set out to find possible markers of the condition for future study.¹

What Did the Researchers Find, and What Comes Next?

Overall, the researchers found that Ebola survivors show changes in several of the body's key chemical processes, including how it produces energy, handles proteins, builds genetic material, and processes certain fats made by gut bacteria. Research on other viruses has linked some of these same changes to a weakened immune system, especially in a type of white blood cell that fights infected cells, as well as to long-lasting infections. However, the researchers stress that, based on their current data, the idea that the Ebola virus might be lingering in the body remains only a possibility. They believe more research is needed on how the immune cells of survivors with PES use energy. Comparing these survivors with people who have lingering symptoms after other viral infections, such as long Covid, would also help show how meaningful the findings are. The team plans to dig deeper into what causes these chemical changes and how they affect the immune system. While the study focused on Ebola survivors, the researchers hope it also shows how valuable this kind of chemical analysis can be for understanding lasting health problems after viral infections more generally.¹

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References

1. Sanford, A. C.; Bond, N. G.; Ficenec, S. et al. Metabolic Basis of Post-infectious Sequelae after Ebola Virus Disease. Metabolomics 2026, 22 (6), 170. DOI: 10.1007/s11306-026-02544-z
2. Wong, A. C.; Devason, A. S.; Umana, I. C. et al. Serotonin Reduction in Post-acute Sequelae of Viral Infection. Cell 2023, 186 (22), 4851-4867.e20. DOI: 10.1016/j.cell.2023.09.013
3. Tang, H.; Abouleila, Y.; Saris, A. et al. Ebola Virus-like Particles Reprogram Cellular Metabolism. J Mol Med (Berl). 2023, 101 (5), 557-568. DOI: 10.1007/s00109-023-02309-4
4. Eisfeld, A. J.; Halfmann, P. J.; Wendler, J. P. Et al. Multi-platform 'Omics Analysis of Human Ebola Virus Disease Pathogenesis. Cell Host Microbe 2017, 22 (6), 817-829.e8. DOI: 10.1016/j.chom.2017.10.011