Integrated mitochondrial function and cancer-related fatigue in men with prostat...

연구 요약

Integrated mitochondrial function and cancer-related fatigue in men with prostate cancer undergoing radiation therapy.

Cancer management and research 학술지에 발표된 이 연구는 Hsiao CP, Chen MK, Daly B 외 연구팀이 수행하였습니다.

이 연구는 'Integrated mitochondrial function and cancer-related fatigue in men with prostate cancer undergoing radiation therapy.'에 대한 과학적 분석을 제공합니다.

핵심 내용

INTRODUCTION: Fatigue experienced by cancer patients is one of the most common symptoms with the greatest adverse effect on quality of life, but arguably the least understood. The purpose of this study was to explore changes in integrated mitochondrial function and fatigue in non-metastatic prostate cancer patients receiving localized radiation therapy (XRT). MATERIALS AND METHODS: We proposed a mitochondrial bioenergetics mechanism of radiation-induced fatigue linking impaired oxidative phosphorylation (OXPHOS) through complex III and decreased adenosine triphosphate (ATP) production as consequences of XRT. Integrated mitochondrial function was measured as mitochondrial OXPHOS from patients' peripheral blood mononuclear cells. Fatigue was measured using the revised Piper Fatigue Scale. Data were collected before (day 0) and at day 21 of XRT. RESULTS: At day 21 of XRT, fatigue symptom intensified in 15 prostate cancer patients (P<0.05). Mitochondrial OXPHOS complex III-linked and uncoupled complex III rates were significantly decreased in mononuclear cells at day 21 during XRT compared to that before XRT (P<0.05). Additionally, increased fatigue appeared to be associated with decreased OXPHOS complex III-linked respiration in patients undergoing XRT. CONCLUSION: Fatigue was associated with OXPHOS complex III-linked oxidation and a defect in oxidation starting at complex III in mononuclear cell mitochondria was revealed at day 21 of XRT in 15 prostate cancer patients. Complex III is a potential target for pharmacological and, in particular, nutraceutical interventions, eg, Q10, for design of interventions for CRF.

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