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Serum vitamin-mineral profiles – association with breast cancer risk including dietary patterns and supplements use: a case-control study
- Beata Krusinska, Lidia Wadolowska, Malgorzata Anna Slowinska, Maciej Biernacki, Marek Drozdowski
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- Journal:
- Proceedings of the Nutrition Society / Volume 79 / Issue OCE2 / 2020
- Published online by Cambridge University Press:
- 10 June 2020, E279
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- Article
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Breast cancer is the most diagnosed cancer among women worldwide. Studies regarding diet and blood levels of vitamins and minerals in the breast cancer aetiology are limited and the results are inconclusive. We investigated the association between serum vitamin-mineral profiles (V-MPs) and breast cancer (BC) risk with including dietary patterns (DPs) and use of supplements. This case-control study involved 420 women aged 40–79 years from north-eastern Poland, including 190 newly-diagnosed breast cancer cases. The serum concentrations of vitamins (folate, cobalamin, 25(OH) vitamin D) and minerals (iron, calcium, magnesium) were marked in 129 post-menopausal women (82 controls, 47 cases) using an immune-analyser Cobas e411 and a Cobas Integra 400plus auto-analyser (Roche Diagnostics®), respectively. A posteriori V-MPs were derived with a Principal Component Analysis (PCA). Three PCA-driven DPs: ‘Non-Healthy’, ‘Prudent’, and ‘Margarine and Sweetened Dairy’ were described previously. A logistic regression analysis was performed. The odds ratios (ORs) and 95% confidence interval (95% CI) were calculated. Two serum V-MPs were identified. The ‘Folate-Cobalamin-Vitamin D’ profile was loaded heavily by the folate (factor loading 0.82), cobalamin (0.81) and vitamin D (0.49). The ‘Iron-Calcium’ profile was loaded heavily by the iron (0.81) and calcium (0.77). The ‘Magnesium-vitamin D’ profile was loaded heavily by the magnesium (0.92) and vitamin D (0.39). The risk of BC was lower by 88% (OR: 0.12; 95%Cl: 0.02–0.88; p < 0.05) in the upper tertile of the serum ‘Iron-Calcium’ profile compared to the bottom tertile. The risk of BC was lower by 67% (OR: 0.33; 95%Cl: 0.11–0.97; p < 0.05) at the level of serum 25(OH) vitamin D ≥ 24.6 ng/mL and lower by 68% (OR: 0.32; 95%Cl: 0.11–0.91; p < 0.05) at the level of serum calcium ≥ 9.6 mg/dL. There was the inverse association of the serum ‘Magnesium-Vitamin D’ profile with the risk of BC, which disappeared after adjustment for DPs. No significant association between BC risk and the serum ‘Folate-Cobalamin-Vitamin D’ profile and also folate, cobalamin, iron or magnesium considered separately was revealed. These findings highlight that the higher-adequate serum concentrations of both iron and calcium as well as close-to-adequate concentrations of calcium and vitamin D considered separately may protect against breast cancer among postmenopausal women, independently of dietary patterns and use of supplements. Therefore, women should be screened for blood concentrations of multiple vitamins and minerals in the breast cancer prevention.
Serum inflammatory profiles – association with breast cancer risk including dietary patterns: a case-control study
- Beata Krusinska, Lidia Wadolowska, Malgorzata Anna Slowinska, Maciej Biernacki, Marek Drozdowski
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- Journal:
- Proceedings of the Nutrition Society / Volume 79 / Issue OCE2 / 2020
- Published online by Cambridge University Press:
- 10 June 2020, E410
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- Article
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- You have access Access
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Breast cancer is the most common cancer among women worldwide. Diet and inflammation have been associated with carcinogenesis. However, there are limited studies regarding both blood levels of inflammatory markers and diet with respect to the risk of breast cancer. We assessed the association between serum inflammatory profiles and breast cancer (BC) risk with including dietary patterns (DPs). This case-control study involved 420 women aged 40–79 years from north-eastern Poland, including 190 newly-diagnosed breast cancer cases. The serum concentrations of C-reactive protein (CRP), interleukin-6 (IL-6) and leukocytes (including neutrophil and lymphocyte count) were marked in 129 post-menopausal women (82 controls, 47 cases) using a Cobas Integra 400plus auto-analyser, an immune-analyser Cobas e411 (Roche Diagnostics®) and haematology analyser MEK-7300 (Nihon Kohden®), respectively. A posteriori inflammatory profiles were derived with a Principal Component Analysis (PCA). A logistic regression analysis was performed. The odds ratios (ORs) and 95% confidence interval (95% CI) were calculated. The ORs were adjusted for: age, BMI, socioeconomic status, overall physical activity, smoking status, abuse of alcohol, age at menarche, number of children, oral contraceptive use, hormone-replacement therapy use, family history of breast cancer, vitamin/mineral supplements use, hormone receptor status of breast cancer and PCA-driven DPs (‘Non-Healthy’, ‘Prudent’, and ‘Margarine and Sweetened Dairy’) score. Two serum inflammatoryprofiles were identified. The ‘CRP-IL-6’ profile was loaded heavily by the interleukin-6 (factor loading 0.78) and C-reactive protein (factor loading 0.75). The ‘Neutrophil-Lymphocyte’ profile was loaded heavily by the lymphocyte (factor loading 0.86) and neutrophil count (factor loading 0.70). The risk of BC was six times higher (OR = 6.05; 95%Cl: 1.93–18.91; p < 0.05) in the third tertile of serum ‘CRP-IL-6’ profile compared to the first or second tertile. The risk of BC was three times higher (OR = 3.11; 95%Cl: 1.05–9.20; p < 0.05) at the level of serum IL-6 > 3.10 pg/mL and seven times higher (OR = 7.48; 95%Cl: 2.31–24.29; p < 0.05) at the level of serum neutrophil count > 3.90 103/μL. No significant association between BC risk and serum ‘Neutrophil-Lymphocyte’ profile and also CRP or lymphocyte count considered separately was revealed. Concluding, the elevated serum levels of both C-reactive protein and interleukin-6, as well as elevated levels of interleukin-6 and neutrophil count considered separately, were associated with higher risk of postmenopausal breast cancer, independently of dietary patterns. Therefore, women should be screened for blood concentrations of multiple potential pro-inflammatory markers in the breast cancer prevention.