Search

The most representative indicator of vitamin D status in clinical practice is 25(OH)D3, but new biomarkers could improve the assessment of vitamin D status and metabolism. The objective of this study is to investigate the association of serum vitamin D metabolites and vitamin D metabolite ratios (VMRs) with potentially influential factors in premenopausal women. This is a cross-sectional study based on 1422 women, aged 39-50, recruited from a Madrid Medical Diagnostic Center. Participants answered an epidemiological and a food frequency questionnaire. Serum vitamin D metabolites were determined using an SPE-LC-MS/MS platform. The association between participant's characteristics, vitamin D metabolites, and VMRs was quantified by multiple linear regression models. Mean 25(OH)D3 concentration was 49.2 + 18.9 nmol/L, with greater deficits among obese, nulliparous, dark-skinned women, and with less sun exposure. A lower R2 ratio (1,25(OH)2D3/25(OH)D3) and a higher R4 (24,25(OH)2D3/1,25(OH)2D3) were observed in nulliparous women, with high sun exposure, and those with low caloric intake or high consumption of calcium, vitamin D supplements, or alcohol. Nulliparous women had lower R1 (25(OH)D3/Vit D3) and R3 (24,25(OH)2D3/25(OH)D3), and older women showed lower R3 and R4. Vitamin D status modified the association of the VMRs with seasons. VMRs can be complementary indicators of vitamin D status and its endogenous metabolism, and reveal the influence of certain individual characteristics on the expression of hydroxylase enzymes. This study was funded by the Spanish Ministry of Health (EC11–273) and by the Carlos III Institute of Health (PI15CIII/0029). The article presents independent research. The views expressed are those of the authors and not necessarily those of the Carlos III Institute of Health. Sí

Objectives To study prevalence of infection in essential workers of Madrid City Council by occupation, related characteristics, use of protective devices, risk perception, and main concerns about COVID-19 during lockdown. Methods A total of 30 231 workers were PCR tested for SARS-CoV-2 infection. Information was collected on COVID-19-related symptoms, risk factors, preventive equipment, and risk perception. The crude prevalence was calculated for infection, use of protective devices, perceived risk and main concerns. Additionally, adjusted prevalence and prevalence ratios (PR) were estimated for these variables using logistic regression models with age, gender, occupation, epidemiological week and laboratory as confounding factors. Results Overall prevalence of infection was 3.2% (95% CI 3.0% to 3.4%), being higher among policemen (4.4%) and bus drivers (4.2%), but lower among emergency healthcare personnel, firefighters, food market workers and burial services (, This study was funded by the Madrid City Council

The role of vitamin D in mammographic density is still unclear. This study examines the association between serum 25-hydroxyvitamin D (25(OH)D) and mammographic density, overall and by specific women characteristics. DDM-Madrid is a cross-sectional study that recruited 1403 premenopausal women in a breast radiodiagnosis unit of Madrid City Council. Information was collected with a questionnaire and plasma 25(OH)D was measured by solid-phase extraction on-line coupled to liquid chromatography–tandem mass spectrometry. Percent mammographic density was assessed using a semi-automated computer tool (DM-Scan). Multivariable linear regression models were used to quantify the associations, categorizing 25(OH)D levels (nmol/L) into 3 groups according to the cut-offs established by the US Endocrine Society. Models were adjusted for age, education, body mass index, age at menarche, parity, previous breast biopsies, family history of breast cancer, physical activity, energy intake, use of corticoids, hypercholesterolemia and day of sample extraction. Mean serum 25(OH)D level was 49.4 + 18.9 nmol/L. Women with sufficient concentrations of 25(OH)D showed a slight decrease in mammographic density (β >75nmol/L=-3.40; p = 0.037). No differences were observed according to women characteristics except for parity, where the protective effect of 25(OH)D was only seen among nulliparous (β >75nmol/L=-13.00; p-heterogeneity = 0.006). In light of the protective effect of vitamin D on mammographic density and the high prevalence of vitamin D insufficiency in our population, improving these levels could be an effective measure for the prevention of health problems related to the lack of this essential vitamin.

[EN] Introduction: Mammographic density (MD), the proportion of radiologically dense breast tissue, is a strong risk factor for breast cancer. Our objective is to investigate the influence of occupations and occupational exposure to physical, chemical, and microbiological agents on MD in Spanish premenopausal women. Methods: This is a cross-sectional study based on 1362 premenopausal workers, aged 39-50, who attended a gynecological screening in a breast radiodiagnosis unit of Madrid City Council. The work history was compiled through a personal interview. Exposure to occupational agents was evaluated using the Spanish job-exposure matrix MatEmESp. MD percentage was assessed using the validated semi-automated computer tool DM-Scan. The association between occupation, occupational exposures, and MD was quantified using multiple linear regression models, adjusted for age, educational level, body mass index, parity, previous breast biopsies, family history of breast cancer, energy intake, use of oral contraceptives, smoking, and alcohol consumption. Results: Although no occupation was statistically significantly associated with MD, a borderline significant inverse association was mainly observed in orchard, greenhouse, nursery, and garden workers (beta = -6.60; 95% confidence interval (95%CI) = -14.27; 1.07) and information and communication technology technicians (beta = -7.27; 95%CI = -15.37; 0.84). On the contrary, a positive association was found among technicians in art galleries, museums, and libraries (beta = 8.47; 95%CI = -0.65; 17.60). Women occupationally exposed to fungicides, herbicides, and insecticides tended to have lower MD. The percentage of density decreased by almost 2% for every 5 years spent in occupations exposed to the mentioned agents. Conclusions: Although our findings point to a lack of association with the occupations and exposures analyzed, this study supports a deeper exploration of the role of certain occupational agents in MD, such as pesticides., This work was supported by the Carlos III Institute of Health (AESI PI15CIII/00029 and AESI PI15CIII/00013). The article presents independent research. The views expressed are those of the authors and not necessarily those of the Carlos III Institute of Health.

ResumenObjetivoDeterminar la prevalencia de diabetes y los principales factores de riesgo cardiovascular en la población adulta de la Comunidad de Madrid.Material y métodoEstudio transversal de base poblacional en el año 2007. Se seleccionó una muestra aleatoria representativa de la población de 30–74 años, con un tamaño muestral fijo para cada estrato de edad, ponderando los resultados según la estructura por edad de la Comunidad de Madrid. Se realizó una encuesta telefónica. Posteriormente, en el centro de salud se efectuó la exploración física y la extracción de sangre en ayunas para determinar la glucemia, el colesterol y las fracciones lipídicas.ResultadosSe incluyeron 2.268 personas con una edad media de 48,3 años; el 52% eran mujeres. La tasa de respuesta fue del 56,4%. El 8,1% (intervalo de confianza del 95% [IC95%]: 7,0–8,9) de la población presenta diabetes y el 5,9% (IC95%: 4,8–6,1) una glucemia basal alterada. El 29,3% (IC95%: 27,3–31,5) tiene hipertensión arterial y el 23,3% (IC 95%: 21,4–25,2) hipercolesterolemia. El 22,8% (IC95%: 20,8–25,0) presenta sobrepeso de grado II, el 21,7% (IC95%: 19,8–23,6) obesidad y el 23,9% (IC95%: 21,8–26,1) obesidad abdominal. El 85,5% (IC95%: 83,1–87,1) eran sedentarios en tiempo libre y el 28,4% (IC95%: 26,3–30,3) fumadores.ConclusionesLa prevalencia de diabetes mellitus en la Comunidad de Madrid se sitúa en una posición intermedia con respecto a otras comunidades autónomas. Los principales factores de riesgo cardiovascular tienen una elevada prevalencia. El sobrepeso de grado II y la obesidad, que afectan a 4,5 de cada 10 adultos, representan una prioridad de intervención en la prevención de la diabetes y la enfermedad cardiovascular.AbstractObjectiveTo describe the prevalence of diabetes and major cardiovascular risk factors in the adult population of the autonomous region of Madrid (Spain).Material and methodA population-based cross-sectional study was carried out in 2007. A random sample of the population aged 30–74 years old was selected. A fixed sample size per age stratum was assigned, weighted by the real age-specific distribution of the population of the autonomous region of Madrid. An epidemiological survey was conducted by telephone. Subsequently, physical examination was performed and a fasting blood sample was taken in the health center for glucose, cholesterol and lipid fraction determinations.ResultsWe included 2268 people with a mean age of 48.3 years old (52% women). The response rate was 56.4%. Diabetes was found in 8.1% (95%CI: 7.0–8.9) of the adult population and impaired fasting glucose was found in 5.9% (95%CI: 4.8–6.1). The prevalence of risk factors was as follows: hypertension in 29.3% (95%CI: 27.3–31.5), hypercholesterolemia in 23.3% (95%CI: 21.8–26.1), overweight grade II in 22.8% (20.8–25.0), obesity in 21.7% (95%CI: 19.8–23.6), and central obesity in 23.9% (95%CI: 21.8–26.1). A total of 85.5% (95%CI: 83.1–87.1) were sedentary in their leisure time and 28.4% (95%CI: 26.3–30.3) were smokers.ConclusionsThe prevalence of diabetes in the autonomous region of Madrid is intermediate in relation to other regions of Spain. Cardiovascular risk factors are highly prevalent, and are higher in men than in women. Overweight and obesity, affecting 4.5 out of every 10 adults, should be considered a priority for health interventions in cardiovascular disease prevention.

To describe the prevalence of diabetes and major cardiovascular risk factors in the adult population of the autonomous region of Madrid (Spain).A population-based cross-sectional study was carried out in 2007. A random sample of the population aged 30-74 years old was selected. A fixed sample size per age stratum was assigned, weighted by the real age-specific distribution of the population of the autonomous region of Madrid. An epidemiological survey was conducted by telephone. Subsequently, physical examination was performed and a fasting blood sample was taken in the health center for glucose, cholesterol and lipid fraction determinations.We included 2268 people with a mean age of 48.3 years old (52% women). The response rate was 56.4%. Diabetes was found in 8.1% (95%CI: 7.0-8.9) of the adult population and impaired fasting glucose was found in 5.9% (95%CI: 4.8-6.1). The prevalence of risk factors was as follows: hypertension in 29.3% (95%CI: 27.3-31.5), hypercholesterolemia in 23.3% (95%CI: 21.8-26.1), overweight grade II in 22.8% (20.8-25.0), obesity in 21.7% (95%CI: 19.8-23.6), and central obesity in 23.9% (95%CI: 21.8-26.1). A total of 85.5% (95%CI: 83.1-87.1) were sedentary in their leisure time and 28.4% (95%CI: 26.3-30.3) were smokers.The prevalence of diabetes in the autonomous region of Madrid is intermediate in relation to other regions of Spain. Cardiovascular risk factors are highly prevalent, and are higher in men than in women. Overweight and obesity, affecting 4.5 out of every 10 adults, should be considered a priority for health interventions in cardiovascular disease prevention.