Depression and Inflammation in Women With Breast Cancer: Risk and Resilience Factors.

Area of Science:

• Oncology
• Psychoneuroimmunology
• Health Psychology

Background:

• Breast cancer diagnosis is a significant stressor linked to increased depression and inflammation.
• Variability in patient outcomes suggests the influence of unexamined risk and resilience factors.
• Focusing on modifiable psychological and behavioral resources is crucial for improving recovery.

Purpose of the Study:

• To investigate risk factors (lifetime stressor exposure) and resilience factors (psychological and behavioral resources) influencing depressive symptoms and inflammatory markers in breast cancer patients.
• To examine the role of modifiable resources such as sleep, physical activity, and coping strategies.
• To understand how these factors impact depression and inflammation post-diagnosis.

Main Methods:

• 180 women with Stage 0-IIIA breast cancer were assessed prior to treatment.
• Lifetime stressor exposure was measured using the Stress and Adversity Inventory (STRAIN).
• Depressive symptoms, inflammation markers (TNF-α, IL-6, CRP), sleep, physical activity, social support, self-esteem, optimism, and mastery were evaluated.

Main Results:

• Higher total stressor count and severity were significantly associated with increased depressive symptoms.
• Total stressor count, but not severity, correlated with elevated inflammation markers.
• Sleep quality, social support, optimism, and mastery acted as buffers against the negative effects of stress on depressive symptoms.

Conclusions:

• Lifetime stress exposure is a significant predictor of depression and inflammation in breast cancer patients.
• Interventions targeting improvements in sleep quality, social support, optimism, and mastery may be effective in preventing depression.
• These findings highlight the importance of psychological and behavioral resilience factors in managing cancer-related distress.