ArticleJournal of neurology2026
Persons with epilepsy have an elevated radiosensitivity, which may be mitigated by folic acid.
Article in Journal of neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionPatients undergoing radiotherapy for cancer usually have several other comorbidities and are taking various medications. Both of these factors can affect the individual radiation sensitivity of normal tissue. We therefore studied persons with epilepsy (PWE) to determine whether they had altered radiation sensitivity. MATERIAL AND
methodsBlood samples were collected from 105 adult patients with epilepsy and compared to those of healthy individuals and oncological patients. The samples were irradiated ex vivo and analyzed by 3-color fluorescence in situ hybridization. In each patient, aberrations were analyzed in 200 metaphases of chromosomes 1, 2, and 4 and scored as breaks. Radiosensitivity was determined by mean breaks per metaphase (B/M) and compared to both healthy donors and oncologic patients.
resultsRadiosensitivity (B/M) of the PWE (n = 105, B/M: 0.478) was clearly increased compared to healthy individuals (n = 209, B/M: 0.420) and oncological patients (rectal patients and breast cancer patients, n = 319, B/M = 0.442). Antiseizure medications tended to increase radiation sensitivity. The use of perampanel (0.505 B/M; p = 0.081) and lacosamide (0.521 B/M; p = 0.014) led to a clear increase in radiation sensitivity. Male PWE (0.502B/M, p = 0.004) were distinctly radiosensitive which may be potentially explained by the fact that women were recommended to take high doses of folic acid according to German guidelines at the time of the study. Factors like seizure frequency, epilepsy duration, polytherapy and comedication did not contribute to increased radiosensitivity.
conclusionPWE were clearly increased radiosensitive compared to healthy individuals and oncological patients. Male PWEs were found to be more sensitive than female PWEs. This may be due to their higher intake of folic acid, a substance which can protect against radiation.
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