Association between cadmium and breast cancer risk according to estrogen receptor and human epidermal growth factor receptor 2: epidemiological evidence

被引:44
作者
Strumylaite, Loreta [1 ]
Kregzdyte, Rima [1 ]
Bogusevicius, Algirdas [2 ]
Poskiene, Lina [3 ]
Baranauskiene, Dale [1 ]
Pranys, Darius [3 ]
机构
[1] Lithuanian Univ Hlth Sci, Inst Neurosci, LT-50009 Kaunas, Lithuania
[2] Lithuanian Univ Hlth Sci, Dept Surg, LT-50009 Kaunas, Lithuania
[3] Lithuanian Univ Hlth Sci, Dept Pathol Anat, LT-50009 Kaunas, Lithuania
关键词
Breast cancer; Cadmium; Urine; Estrogen receptors; Human epidermal growth factor receptor 2; Case-control study; EXPOSURE;
D O I
10.1007/s10549-014-2918-6
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
The study aimed to examine the association between cadmium (Cd) and the risk of breast cancer according to estrogen receptor (ER) and human epidermal growth factor receptor 2 (HER2). A hospital-based case-control study was carried out in 585 cases and 1,170 controls. Information on possible risk factors was collected via a structured questionnaire. Urinary Cd was determined by atomic absorption spectrometry. The ER and HER2 levels in tumor tissue were analyzed by immunohistochemistry. Logistic regression was used to calculate odds ratios (ORs) and 95 % confidence intervals (CIs) for breast cancer by creatinine-adjusted urinary Cd. Women with greater creatinine-adjusted urine Cd (3rd quartile: 0.241-0.399 mu g/g and 4th quartile: a parts per thousand yen0.4 mu g/g) experienced 1.6 times higher risk of breast cancer compared with those having Cd concentration lower than 0.147 mu g/g (1st quartile) [OR = 1.6, (95 % CI 1.19, 2.17) and OR = 1.62 (95 % CI 1.19, 2.21), respectively, P trend = 0.001] after adjustment for age and other confounders. Both ER+ and HER2- cases from the highest quartile of urine Cd exhibited approximately twice the breast cancer risk of those in the lowest quartile [OR = 1.9, (95 % CI 1.31, 2.74) and OR = 1.87, (95 % CI 1.33, 2.62), respectively, P trend < 0.001) after adjustment for confounders. The data support cadmium as a risk factor for breast cancer, especially for both ER+ and HER2- cancer patients.
引用
收藏
页码:225 / 232
页数:8
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