Interaction of reproductive tract infections with estrogen exposure on breast cancer risk and prognosis
- Open Access
- 01-12-2023
- Breast Cancer
- Research
Published in:
- Authors
- YunQian Li
- XingLi Gan
- ZhuoZhi Liang
- HengMing Ye
- Ying Lin
- Qiang Liu
- XiaoMing Xie
- LuYing Tang
- ZeFang Ren
- Published in
- BMC Women's Health | Issue 1/2023
Abstract
Background
Reproductive tract infections influenced a series of inflammatory processes which involved in the development of breast cancer, while the processes were largely affected by estrogen. The present study aimed to explore the associations of breast cancer risk and prognosis with reproductive tract infections and the modification effects of estrogen exposure.
Methods
We collected history of reproductive tract infections, menstruation and reproduction from 1003 cases and 1107 controls and a cohort of 4264 breast cancer patients during 2008–2018 in Guangzhou, China. We used logistic regression model to estimate the odds ratios (ORs) and 95% confidence intervals (CIs) for risk; Cox model was applied to estimate the hazard ratios (HRs) and 95% CIs for progression-free survival (PFS) and overall survival (OS).
Results
It was found that previous reproductive tract infections were negatively associated with breast cancer risk (OR = 0.80, 95%CI, 0.65–0.98), particularly for patients with more menstrual cycles (OR = 0.74, 95%CI, 0.57–0.96). Patients with previous reproductive tract infections experienced better OS (HR = 0.61; 95% CI, 0.40–0.94) and PFS (HR = 0.84; 95% CI, 0.65–1.09). This protective effect on PFS was only found in patients with more menstrual cycles (HR = 0.52, 95% CI:0.34–0.79, Pinteraction = 0.015).
Conclusions
The findings suggested that reproductive tract infections may be protective for the initiation and development of breast cancer, particularly for women with a longer interval of lifetime estrogen exposure.
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- Title
- Interaction of reproductive tract infections with estrogen exposure on breast cancer risk and prognosis
- Authors
-
YunQian Li
XingLi Gan
ZhuoZhi Liang
HengMing Ye
Ying Lin
Qiang Liu
XiaoMing Xie
LuYing Tang
ZeFang Ren
- Publication date
- 01-12-2023
- Publisher
- BioMed Central
- Keywords
-
Breast Cancer
Breast Cancer
Estrogens
Menopause - Published in
-
BMC Women's Health / Issue 1/2023
Electronic ISSN: 1472-6874 - DOI
- https://doi.org/10.1186/s12905-023-02383-3
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