scholarly journals Occupational exposures and mammographic density in Spanish women

2017 ◽  
Vol 75 (2) ◽  
pp. 124-131 ◽  
Author(s):  
Virginia Lope ◽  
Javier García-Pérez ◽  
Beatriz Pérez-Gómez ◽  
Ana María Pedraza-Flechas ◽  
Juan Alguacil ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Mammographic Density ◽  
Menopausal Status ◽  
Occupational Exposures ◽  
Population Based ◽  
Ionising Radiation ◽  
Adult Women ◽  
Linear Regression Models ◽  
Cross Sectional ◽  
Hydrocarbon Solvents

ObjectivesThe association between occupational exposures and mammographic density (MD), a marker of breast cancer risk, has not been previously explored. Our objective was to investigate the influence of occupational exposure to chemical, physical and microbiological agents on MD in adult women.MethodsThis is a population-based cross-sectional study based on 1476 female workers aged 45–65 years from seven Spanish breast cancer screening programmes. Occupational history was surveyed by trained staff. Exposure to occupational agents was assessed using the Spanish job-exposure matrix MatEmESp. Percentage of MD was measured by two radiologists using a semiautomatic computer tool. The association was estimated using mixed log-linear regression models adjusting for age, education, body mass index, menopausal status, parity, smoking, alcohol intake, type of mammography, family history of breast cancer and hormonal therapy use, and including screening centre and professional reader as random effects terms.ResultsAlthough no association was found with most of the agents, women occupationally exposed to perchloroethylene (eβ=1.51; 95% CI 1.04 to 2.19), ionising radiation (eβ=1.23; 95% CI 0.99 to 1.52) and mould spores (eβ=1.44; 95% CI 1.01 to 2.04) tended to have higher MD. The percentage of density increased 12% for every 5 years exposure to perchloroethylene or mould spores, 11% for every 5 years exposure to aliphatic/alicyclic hydrocarbon solvents and 3% for each 5 years exposure to ionising radiation.ConclusionsExposure to perchloroethylene, ionising radiation, mould spores or aliphatic/alicyclic hydrocarbon solvents in occupational settings could be associated with higher MD. Further studies are needed to clarify the accuracy and the reasons for these findings.

scholarly journals Association between menopausal hormone therapy, mammographic density and breast cancer risk: results from the E3N cohort study

2021 ◽  
Author(s):  
Marco Fornili ◽  
Vittorio Perduca ◽  
Agnès Fournier ◽  
Allan Jérolon ◽  
Marie Christine Boutron-Ruault ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hormone Therapy ◽  
Mammographic Density ◽  
Hormone Receptor ◽  
Causal Model ◽  
Menopausal Status ◽  
Menopausal Hormone Therapy ◽  
Linear Regression Models ◽  
Percent Mammographic Density ◽  
Hormone Receptor Positive

Abstract BACKGROUND Menopausal hormone therapy (MHT) is a risk factor for breast cancer (BC). Evidence suggests that its effect on BC risk could be partly mediated by mammographic density. The aim of this study was to investigate the relationship between MHT, mammographic density and BC risk using data from a prospective study. METHODS We used data from a case-control study nested within the French cohort E3N including 453 cases and 453 matched controls. Measures of mammographic density, history of MHT use during follow-up and information on potential confounders were available for all women. The association of mammographic density with MHT was evaluated by linear regression models. Mediation modelling techniques were applied to estimate under the hypothesis of a causal model the proportion of the effect of MHT on BC risk mediated by percent mammographic density for BC overall and by hormonal receptor status. RESULTS Among MHT users, only 4.2% used exclusively estrogens compared with 68.3% who used exclusively estrogens plus progestogens. Mammographic density was higher in current users (mean percent mammographic density for a 60 year old woman 33%; 95% CI: 31% to 35%) than in past (29%; 27% to 31%) and never users (24%; 22% to 26%). Mammographic density increased with the duration of MHT within one year of therapy and reached a steady state thereafter. After MHT discontinuation, mammographic density decreased with time since last use and reached values similar to those of never users after 8 years. The OR of BC for current versus never MHT users, adjusted for age, year of birth, menopausal status at baseline and BMI, was 1.67 (95% CI, 1.04 to 2.68). The proportion of effect mediated by percent mammographic density was 34% for any BC and became 48% when the correlation between BMI and percent mammographic density was accounted for. These effects were limited to hormone receptor positive BC. CONCLUSIONS Our results suggest that under a causal model nearly half of the effect of MHT on hormone receptor positive BC risk is mediated by mammographic density, which appears to be modified by MHT for up to 8 years after MHT termination.

scholarly journals Association between menopausal hormone therapy, mammographic density and breast cancer risk: results from the E3N cohort study

2020 ◽  
Author(s):  
Marco Fornili ◽  
Vittorio Perduca ◽  
Agnès Fournier ◽  
Allan Jérolon ◽  
Marie Christine Boutron-Ruault ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hormone Therapy ◽  
Mammographic Density ◽  
Causal Model ◽  
Menopausal Status ◽  
Quantitative Measure ◽  
Menopausal Hormone Therapy ◽  
Linear Regression Models ◽  
Percent Mammographic Density ◽  
Hormone Receptor Positive

Abstract BACKGROUND: Menopausal hormone therapy (MHT) is a risk factor for breast cancer (BC). Evidence suggests that its effect on BC risk could be partly mediated by mammographic density. The aim of this study is to investigate the relationship between MHT, mammographic density and BC risk using data from a prospective study.METHODS: The data analyzed refer to a case-control study nested into the French cohort E3N and include 453 cases and 453 matched controls. A quantitative measure of mammographic density, a detailed history of MHT use during follow-up and information on potential confounders were available for all women. The association of mammographic density with MHT duration and time since last use was evaluated by linear regression models. Mediation modelling techniques were applied to estimate under the hypothesis of a causal model the proportion of the effect of MHT on BC risk mediated by percent mammographic density for BC overall and by ER/PR status.RESULTS: Mammographic density was higher in current (mean percent mammographic density 33%; 95% CI: 31–35%) than in former (29%; 95% CI 27% to 31) and never users (24%; 95% CI, 22–26%). Mammographic density increased with the duration of MHT within one year of therapy and reached a steady state thereafter. After discontinuation of the therapy, mammographic density decreased with time since last use and reached values similar to those of never users after 8 years. The OR of BC for current versus never MHT users, adjusted for age, year of birth, menopausal status at baseline and BMI, was 1.67 (95% CI, 1.04 to 2.68). The proportion of effect mediated by percent mammographic density was 34% on the log scale for any BC and became 48% when the correlation between BMI and percent mammographic density was accounted for. These results are limited to hormone receptor positive BCs.CONCLUSIONS: Our results suggest that under a causal model the effect of MHT on BC risk was partially mediated by MD that appeared to be modified by MHT for up to 8 years after MHT termination.

scholarly journals Association between menopausal hormone therapy, mammographic density and breast cancer risk: results from the E3N cohort study

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
M. Fornili ◽  
V. Perduca ◽  
A. Fournier ◽  
A. Jérolon ◽  
M. C. Boutron-Ruault ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hormone Therapy ◽  
Mammographic Density ◽  
Hormone Receptor ◽  
Causal Model ◽  
Menopausal Status ◽  
Menopausal Hormone Therapy ◽  
Linear Regression Models ◽  
Hormone Receptor Positive ◽  
Using Data

Abstract Background Menopausal hormone therapy (MHT) is a risk factor for breast cancer (BC). Evidence suggests that its effect on BC risk could be partly mediated by mammographic density. The aim of this study was to investigate the relationship between MHT, mammographic density and BC risk using data from a prospective study. Methods We used data from a case-control study nested within the French cohort E3N including 453 cases and 453 matched controls. Measures of mammographic density, history of MHT use during follow-up and information on potential confounders were available for all women. The association between MHT and mammographic density was evaluated by linear regression models. We applied mediation modelling techniques to estimate, under the hypothesis of a causal model, the proportion of the effect of MHT on BC risk mediated by percent mammographic density (PMD) for BC overall and by hormone receptor status. Results Among MHT users, 4.2% used exclusively oestrogen alone compared with 68.3% who used exclusively oestrogens plus progestogens. Mammographic density was higher in current users (for a 60-year-old woman, mean PMD 33%; 95% CI 31 to 35%) than in past (29%; 27 to 31%) and never users (24%; 22 to 26%). No statistically significant association was observed between duration of MHT and mammographic density. In past MHT users, mammographic density was negatively associated with time since last use; values similar to those of never users were observed in women who had stopped MHT at least 8 years earlier. The odds ratio of BC for current versus never MHT users, adjusted for age, year of birth, menopausal status at baseline and BMI, was 1.67 (95% CI, 1.04 to 2.68). The proportion of effect mediated by PMD was 34% for any BC and became 48% when the correlation between BMI and PMD was accounted for. These effects were limited to hormone receptor-positive BC. Conclusions Our results suggest that, under a causal model, nearly half of the effect of MHT on hormone receptor-positive BC risk is mediated by mammographic density, which appears to be modified by MHT for up to 8 years after MHT termination.

scholarly journals Starchy Vegetables and Metabolic Syndrome in Costa Rica

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1639
Author(s):  
Zhongyao Li ◽  
Dongqing Wang ◽  
Edward A. Ruiz-Narváez ◽  
Karen E. Peterson ◽  
Hannia Campos ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Regression Models ◽  
Fasting Blood Glucose ◽  
Population Based ◽  
Cross Sectional Study ◽  
Costa Rican ◽  
Least Square ◽  
Inverse Association ◽  
Linear Regression Models ◽  
Cross Sectional

Only a few studies primarily examined the associations between starchy vegetables (other than potatoes) and metabolic syndrome (MetS). We aimed to evaluate the association between starchy vegetables consumption and MetS in a population-based sample of Costa Rican adults. We hypothesized that a higher overall intake of starchy vegetables would not be associated with higher MetS prevalence. In this cross-sectional study, log-binomial regression models were used to estimate prevalence ratios (PRs) of MetS across quintiles of total, unhealthy, healthy starchy vegetables, and individual starchy vegetables (potatoes, purple sweet potatoes, etc.), among 1881 Costa Rican adults. Least square means and 95% confidence intervals (CIs) from linear regression models were estimated for each MetS component by categories of starchy vegetable variables. Higher intakes of starchy vegetables were associated with a higher prevalence of MetS in crude models, but no significant trends were observed after adjusting for confounders. A significant inverse association was observed between total starchy and healthy starchy vegetables consumption and fasting blood glucose. In this population, starchy vegetables might be part of a healthy dietary pattern.

Inverse Association Between Health Literacy and Obesity Among Children in Greece: A School-Based, Cross-Sectional Epidemiological Study

2021 ◽  
pp. 109019812098294
Author(s):  
Aikaterini Kanellopoulou ◽  
Venetia Notara ◽  
George Antonogeorgos ◽  
Maria Chrissini ◽  
Andrea Paola Rojas-Gil ◽  
...  
Keyword(s):  
Health Literacy ◽  
Weight Status ◽  
Dietary Habits ◽  
Population Based ◽  
Activity Levels ◽  
Inverse Association ◽  
Linear Regression Models ◽  
Cross Sectional ◽  
Body Weight Status ◽  
High Level

Children’s health literacy is a crucial pillar of health. This study is aimed to examine the association between health literacy and weight status among Greek schoolchildren aged 10 to 12 years old. A population-based, cross-sectional observational study enrolling 1,728 students (795 boys), aged 10 to 12 years old, was conducted during school years 2014–2016. A health literacy index (range 0-100) was created through an item response theory hybrid model, by combining a variety of beliefs and perceptions of children about health. The mean health literacy score was 70.4 (±18.7). The majority of children (63.8%) had a “high” level (i.e., >67/100) of health literacy, 30.5% had a “medium” level (i.e., 34–66/100) of health literacy, while a small proportion of children (5.7%) had a “low” level (i.e., <33/100). Girls exhibited a higher level of health literacy than boys (71.7 ± 18.3 vs. 68.8 ± 19.1, p < .01). Regarding body weight status, 21.7% of children was overweight and 5.0% was obese. Linear regression models showed that the health literacy score was inversely associated with children’s body mass index (regression coefficient [95% CI]: −0.010 [−0.018, −0.001]), after adjusting for dietary habits, physical activity levels, and other potential confounders. Health literacy seems to be a dominant characteristic of children’s weight status; therefore, school planning, as well as public health policy actions should emphasize on the ability of children’s capacity to obtain, process, and understand basic health information.

scholarly journals Lifestyle correlates of eight breast cancer-related metabolites: a cross-sectional study within the EPIC cohort

BMC Medicine ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Mathilde His ◽  
Vivian Viallon ◽  
Laure Dossus ◽  
Julie A. Schmidt ◽  
Ruth C. Travis ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Lower Risk ◽  
Positive Association ◽  
Blood Collection ◽  
Linear Regression Models ◽  
Case Control Studies ◽  
Cross Sectional ◽  
Blood Concentrations ◽  
Exogenous Hormones ◽  
Negatively Associated

Abstract Background Metabolomics is a promising molecular tool for identifying novel etiological pathways leading to cancer. In an earlier prospective study among pre- and postmenopausal women not using exogenous hormones, we observed a higher risk of breast cancer associated with higher blood concentrations of one metabolite (acetylcarnitine) and a lower risk associated with higher blood concentrations of seven others (arginine, asparagine, phosphatidylcholines (PCs) aa C36:3, ae C34:2, ae C36:2, ae C36:3, and ae C38:2). Methods To identify determinants of these breast cancer-related metabolites, we conducted a cross-sectional analysis to identify their lifestyle and anthropometric correlates in 2358 women, who were previously included as controls in case-control studies nested within the European Prospective Investigation into Cancer and Nutrition cohort and not using exogenous hormones at blood collection. Associations of each metabolite concentration with 42 variables were assessed using linear regression models in a discovery set of 1572 participants. Significant associations were evaluated in a validation set (n = 786). Results For the metabolites previously associated with a lower risk of breast cancer, concentrations of PCs ae C34:2, C36:2, C36:3, and C38:2 were negatively associated with adiposity and positively associated with total and saturated fat intakes. PC ae C36:2 was also negatively associated with alcohol consumption and positively associated with two scores reflecting adherence to a healthy lifestyle. Asparagine concentration was negatively associated with adiposity. Arginine and PC aa C36:3 concentrations were not associated to any of the factors examined. For the metabolite previously associated with a higher risk of breast cancer, acetylcarnitine, a positive association with age was observed. Conclusions These associations may indicate possible mechanisms underlying associations between lifestyle and anthropometric factors, and risk of breast cancer. Further research is needed to identify potential non-lifestyle correlates of the metabolites investigated.

scholarly journals Occupational exposure to solvents and lung function decline: A population based study

Thorax ◽  
2019 ◽  
Vol 74 (7) ◽  
pp. 650-658 ◽  
Author(s):  
Sheikh M Alif ◽  
Shyamali Dharmage ◽  
Geza Benke ◽  
Martine Dennekamp ◽  
John Burgess ◽  
...  
Keyword(s):  
Lung Function ◽  
Occupational Exposures ◽  
Population Based ◽  
Cumulative Exposure ◽  
Health Study ◽  
Lung Function Decline ◽  
Cross Sectional ◽  
Population Based Study ◽  
Aromatic Solvents ◽  
Using Data

RationaleWhile cross-sectional studies have shown associations between certain occupational exposures and lower levels of lung function, there was little evidence from population-based studies with repeated lung function measurements.ObjectivesWe aimed to investigate the associations between occupational exposures and longitudinal lung function decline in the population-based Tasmanian Longitudinal Health Study.MethodsLung function decline between ages 45 years and 50 years was assessed using data from 767 participants. Using lifetime work history calendars completed at age 45 years, exposures were assigned according to the ALOHA plus Job Exposure Matrix. Occupational exposures were defined as ever exposed and cumulative exposure -unit- years. We investigated effect modification by sex, smoking and asthma status.ResultsCompared with those without exposure, ever exposures to aromatic solvents and metals were associated with a greater decline in FEV1 (aromatic solvents 15.5 mL/year (95% CI −24.8 to 6.3); metals 11.3 mL/year (95% CI −21.9 to – 0.7)) and FVC (aromatic solvents 14.1 mL/year 95% CI −28.8 to – 0.7; metals 17.5 mL/year (95% CI –34.3 to – 0.8)). Cumulative exposure (unit years) to aromatic solvents was also associated with greater decline in FEV1 and FVC. Women had lower cumulative exposure years to aromatic solvents than men (mean (SD) 9.6 (15.5) vs 16.6 (14.6)), but greater lung function decline than men. We also found association between ever exposures to gases/fumes or mineral dust and greater decline in lung function.ConclusionsExposures to aromatic solvents and metals were associated with greater lung function decline. The effect of aromatic solvents was strongest in women. Preventive strategies should be implemented to reduce these exposures in the workplace.

scholarly journals Association between axillary lymph node involvement and clinicopathological features of breast cancer among Indonesian women

2020 ◽  
Vol 29 (1) ◽  
pp. 32-7
Author(s):  
Dody Novrial ◽  
Gita Nawangtantrini ◽  
Hidayat Sulistyo ◽  
Henida Dwi Sari ◽  
Wahyu Djatmiko
Keyword(s):  
Breast Cancer ◽  
Lymph Node ◽  
Predictive Factors ◽  
Axillary Lymph Node ◽  
Menopausal Status ◽  
Growth Factor Receptor ◽  
Tumor Stage ◽  
Clinicopathological Features ◽  
Axillary Lymph ◽  
Cross Sectional

BACKGROUND Some clinicopathological features play roles in the spread of breast cancer to axillary lymph node (ALN). However, their roles as predictive factors are not well-established. This study was conducted to determine the correlation between the clinicopathological features of breast cancer and the risk of ALN involvement in Indonesian women. METHODS This cross-sectional study was conducted in Margono Soekarjo Hospital using archival data from January 2017 to June 2018. All subjects with breast cancer who had undergone modified radical mastectomies without any evidence of distant metastasis were included. Chi-square and Fisher’s exact tests were performed to assess the relationship between ALN involvement and age, menopausal status, laterality, tumor size, tumor stage, histological type, tumor grade, lymphovascular space invasion (LVSI), skin or nipple infiltration, perineural invasion, estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 status. The odds ratio of each variable was evaluated using ordinal regression analysis. RESULTS Stage 3 breast cancer had the worst status of ALN involvement compared with stage 1 (OR = 3.49; 95% CI = 1.51–8.08) and stage 2 (OR = 3.04; 95% CI = 1.32–6.98). Likewise, positive LVSI also had the worst status of ALN involvement compared with negative LVSI (OR = 8.68; 95% CI = 4.23–17.81). CONCLUSIONS Tumor stage and LVSI could be considered as independent predictive factors of ALN involvement in patients with breast cancer, especially among Indonesian women.

scholarly journals Multivitamin supplement use and risk of invasive breast cancer

2009 ◽  
Vol 13 (10) ◽  
pp. 1540-1545 ◽  
Author(s):  
Johanna M Meulepas ◽  
Polly A Newcomb ◽  
Andrea N Burnett-Hartman ◽  
John M Hampton ◽  
Amy Trentham-Dietz
Keyword(s):  
Breast Cancer ◽  
Cancer Risk ◽  
Menopausal Status ◽  
Population Based ◽  
Supplement Use ◽  
Multivitamin Supplement ◽  
The Usa ◽  
History Of ◽  
Multivitamin Use ◽  
Hormone Use

AbstractObjectiveMultivitamin supplements are used by nearly half of middle-aged women in the USA. Despite this high prevalence of multivitamin use, little is known about the effects of multivitamins on health outcomes, including cancer risk. Our main objective was to determine the association between multivitamin use and the risk of breast cancer in women.DesignWe conducted a population-based case–control study among 2968 incident breast cancer cases (aged 20–69 years), diagnosed between 2004 and 2007, and 2982 control women from Wisconsin, USA. All participants completed a structured telephone interview which ascertained supplement use prior to diagnosis, demographics and risk factor information. Odds ratios and 95 % confidence intervals were calculated using multivariable logistic regression.ResultsCompared with never users of multivitamins, the OR for breast cancer was 1·02 (95 % CI 0·87, 1·19) for current users and 0·99 (95 % CI 0·74, 1·33) for former users. Further, neither duration of use (for ≥10 years: OR = 1·13, 95 % CI 0·93, 1·38, P for trend = 0·25) nor frequency (>7 times/week: OR = 1·00, 95 % CI 0·77, 1·28, P for trend = 0·97) was related to risk in current users. Stratification by menopausal status, family history of breast cancer, age, alcohol, tumour staging and postmenopausal hormone use did not significantly modify the association between multivitamin use and breast cancer.ConclusionsThe current study found no association between multivitamin supplement use and breast cancer risk in women.

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