Cancer-Related Fatigue and Circulating Biomarkers in Breast Cancer Survivors

Abstract

Purpose Cancer-related fatigue (CRF) is the most common and disruptive symptom experienced by cancer survivors and because of its frequency and severity is especially worrisome in breast cancer survivors (BCS). Despite a great deal of research, the mechanisms underlying CRF have not been determined. The present study aims to describe associations between CRF in BCS and different blood biomarkers. Methods A descriptive and cross-sectional study was conducted. A set of biomarkers assessing inflammation were measured in BCS: C-reactive protein (CRP), neutrophil-lymphocyte ratio (NLR), IL-1β, IL-6, IL-8, IL-10, tumor necrosis factor (TNF); HPA axis dysfunction (cortisol), autonomic dysfunction (noradrenaline); oxidative stress (8-OH deoxyguanosine); insulin resistance markers (insulin, IGF-I, IGFBP3) and sexual hormones (estrogens, progesterone, testosterone). Results NLR ( p = .00) and cortisol ( p = .02) were positive and negatively associated with CRF, respectively. The rest of the blood markers were not associated with CRF. Conclusion Our results increase the evidence on pathophysiological mechanisms driving CRF in BCS. However, longitudinal studies are needed to explore the role of these factors as potential causal mechanisms.

Treatments and regulatory mechanisms of acoustic stimuli on mood disorders and neurological diseases

“…Furthermore, cortisol plays a significant role in a variety of mental and neurodegenerative disorders, such as depression, chronic stress, PTSD, fatigue syndromes, dementia and AD (Cheour et al, 2022;Rasing et al, 2022;García-González et al, 2023;Patel et al, 2024). These mental disorders are often profoundly associated with abnormally elevated levels of cortisol, which can severely damage physiological and mental health if maintained over a long period (Patel et al, 2024).…”