Differential association between dairy intake patterns and incident prostate cancer: a potential dairy matrix effect.

Objective: To evaluate the association between dairy intake patterns and the risk of prostate cancer (PC), and its histological differentiation, among men from Mexico City.

Methods: We analyzed the information from 394 incident PC cases paired by age (± 5 years) with 794 population controls. According to the Gleason score at diagnosis, cases were classified as well- (≤ 6), moderately- (= 7), and poorly differentiated PC (≥ 8).

Towards a unified curriculum system based on a public health holistic approach. Renovation of the academic programs at the School of Public Health of Mexico.

Public health training cannot be practiced in isolation, but rather within the framework of substantive conceptual visions, the organizational structure and teaching culture in a broad sense. The School of Public Health of Mexico (ESPM), in the mist of its 100th anniversary, is implementing an educational restructure with the guidance of conceptual and ethical principles. The restructure of the academic pro-grams will follow a constructivist pedagogical model, based on renewed institutional practices that integrates research, teaching and community outreach, making for truly transfor-mative learning.

Metabolic Syndrome and Prostate Cancer Risk: A Population Case-control Study.

Background: Metabolic syndrome (MS) with mixed dyslipidemia and prostate cancer (PC) are relevant health problems among Mexican men. However, there is no information regarding the association between MS and PC for this population.

Aim Of The Study: To evaluate this association in a population case-control study in Mexico City.

Association between life-course leisure-time physical activity and prostate cancer.

Objective: To evaluate the association between life-course leisure-time physical activity (PA) and prostate cancer (PC) among males living in Mexico City. Materials and meth-ods. Information from 394 incident PC cases and 794 popula-tion controls matched by age (± 5 years), was analyzed.

Dietary flavonoid patterns and prostate cancer: evidence from a Mexican population-based case-control study.

Flavonoids are a broad group of bioactive compounds with anticarcinogenic effects on the prostate that have been scarcely evaluated in Latin American populations. Our objective was to evaluate the association between dietary patterns of flavonoid intake and prostate cancer (PC) in a population-based case-control study carried out in Mexico City. Based on a semi-quantitative FFQ with a frame reference of 3 years before diagnosis or interview, we used an updated database for estimating the daily intake (mg/d) of flavones, flavonols and flavanols for 395 confirmed incident PC cases and 797 population controls matched by age (± 5 years).

[Not Available].

 Objetivo. Resumir la evidencia científica sobre las altera-ciones renales asociadas con la infección por SARS-CoV-2. Material y métodos.

Lactobacillus paracasei as a protective factor of obesity induced by an unhealthy diet in children.

This study examined the association between intestinal lactobacilli and obesity dependent on dietary patterns in children. A cross-sectional study was conducted including 1111 children, 6-12 years old. Obesity was determined according to the WHO cut-off points.

Perception of parents' physical activity as a positive model on physical activity of adolescents.

Physical activity (PA) promotes an adequate level of health in adolescents. The PA behaviors moderation is led by the adolescents' perception of their parents. We suppose that higher adolescents' perception of their parents' physical activity influences the physical activity spent in adolescents.

Blood cadmium determinants among males over forty living in Mexico City.

Background: Mexico City has air, water and food pollution problems; however, human exposure to cadmium and its sources have not been described.

Objectives: To determine the blood cadmium (BCd) level and its main exposure sources among males aged 40 years or older living in different areas of Mexico City.

Methods: After receiving informed consent, we interviewed 702 males aged ≥40 years to collect data on their sociodemographic characteristics, lifetime occupation, smoking history, and dietary habits, using a validated questionnaire.

Dietary patterns in Mexican children and adolescents: Characterization and relation with socioeconomic and home environment factors.

Background: Eating habits in children and adolescents are influenced by multiple determinants, which include socioeconomic and home environmental factors.

Objective: To characterize the dietary patterns in Mexican children and adolescents and to assess its association with socioeconomic and home environmental factors.

Methods: A cross-sectional study was conducted in 878 children and adolescents aged 5-15 years, unrelated, selected randomly from Morelos Sports Unit at north of Mexico City.

Phytoestrogen Concentrations in Human Urine as Biomarkers for Dietary Phytoestrogen Intake in Mexican Women.

There has been substantial interest in phytoestrogens, because of their potential effect in reducing cancer and heart disease risk. Measuring concentrations of phytoestrogens in urine is an alternative method for conducting epidemiological studies. Our objective was to evaluate the urinary excretion of phytoestrogens as biomarkers for dietary phytoestrogen intake in Mexican women.

Dietary inflammatory index and prostate cancer risk in a case-control study in Mexico.

Recent evidence suggests that a pro-inflammatory diet could be associated with prostate cancer (PC) risk. To evaluate the association between dietary inflammatory index (DII) and PC risk as well as aggressiveness, we conducted a case-control study in Mexico City. Cases were 394 individuals with incident, histologically confirmed PC, who were matched by age (±5 years) with 794 population controls.

Food habits, physical activities and sedentary lifestyles of eutrophic and obese school children: a case-control study.

Background: Civilization has produced lifestyle changes; currently, people ingest more calories than are expended, resulting in obesity. This study assessed the association between dietary habits, physical activities, and sedentary behaviors and the risk of obesity in schoolchildren in Mexico City.

Methods: Of 1,441 children (6-12 years old) screened in elementary schools, 202 obese (BMI ≥95(th) pc) and 200 normal-weight children (BMI 25(th)- 75(th) pc), as defined by the 2000 CDC criteria, were included in a case-control study.

Leisure-time physical activity and cardiometabolic risk among children and adolescents.

Objective: To assess the effect of Leisure-time physical activity (LTPA) on cardiometabolic risk by nutritional status in Mexican children and adolescents.

Methods: This was a cross-sectional study conducted with 1,309 participants aged between 5 and 17 years. Nutritional status was classified according to the BMI Z-score by age and gender.

[Validity and reproducibility of a food frequency questionnaire to estimate folate intake in a Mexican population].

Objective: To evaluate the reproducibility and validity of folate intake (FI) estimated from a food frequency questionnaire (FFQ), taking into account the retention factor (RF) associated with meal preparation processes.

Material And Methods: A total of 497 healthy adult participants were interviewed with a FFQ. A second interview was performed one year later of a sample of 100 randomly selected individuals who had not modified their diet during the previous year.

Resistance to antibiotics and characterization of Helicobacter pylori strains isolated from antrum and body from adults in Mexico.

Background And Aims: Resistance to antibiotics is common in patients with Helicobacter pylori infection in more than one anatomic stomach site. We assessed whether the antibiotic resistance varies according to virulence factors of the bacteria as well as to the age and gender of individuals infected in two anatomic sites.

Methods: H.

Exposure to phthalates and breast cancer risk in northern Mexico.

Background: Phthalates, ubiquitous environmental pollutants that may disturb the endocrine system, are used primarily as plasticizers of polyvinyl chloride and as additives in consumer and personal care products.

Objectives: In this study, we examined the association between urinary concentrations of nine phthalate metabolites and breast cancer (BC) in Mexican women.

Methods: We age-matched 233 BC cases to 221 women residing in northern Mexico.

[Diet and breast cancer in Latin-America].

Unlabelled: Breast cancer (BC) is the primary cause of death from malignant tumors in women worldwide.

Objective: Review epidemiological studies from the Latin-America and Caribbean (LAC) region.

Material And Methods: A systematic search, carried out during June-November 2008 in Mexico of PubMed/Medline, Scielo, and Google identified 27 epidemiological studies in LAC that evaluated associations between diet and BC.

Dietary folate and vitamin B12 intake before diagnosis decreases gastric cancer mortality risk among susceptible MTHFR 677TT carriers.

Objective: To assess gastric cancer survival in relation to dietary intake of methyl donors and the methylenetetrahydrofolate reductase 677C>T (MTHFR 677C>T) polymorphism.

Methods: A prospective cohort of 257 incidental, histologically confirmed gastric cancer cases was assembled in January 2004 and followed until June 2006. Patients were recruited from the main oncology and/or gastroenterology units in Mexico City and were queried regarding their sociodemographic information, clinical history, and dietary habits 3 y before the onset of their symptoms.

Dietary intake of polyphenols, nitrate and nitrite and gastric cancer risk in Mexico City.

N-nitroso compounds (NOC) are potent animal carcinogens and potential human carcinogens. The primary source of exposure for most individuals may be endogenous formation, a process that can be inhibited by dietary polyphenols. To estimate the risk of gastric cancer (GC) in relation to the individual and combined consumption of polyphenols and NOC precursors (nitrate and nitrite), a population-based case-control study was carried out in Mexico City from 2004 to 2005 including 257 histologically confirmed GC cases and 478 controls.

Gastric cancer in relation to the intake of nutrients involved in one-carbon metabolism among MTHFR 677 TT carriers.

Background: DNA methylation is an important epigenetic process for transcriptional control of human genome including those genes involved in cancer initiation and progression. Clinical studies have suggested that biological explanation to the protective effect of some nutrients could be linked with the DNA methylation. Folate is a primary methyl donor nutrient; it has been shown to play a key role in DNA methylation, repair and synthesis, by acting as co-factors and/or substrates in this metabolic pathway.

Maternal MTHFR polymorphisms and risk of spontaneous abortion.

Objective: To asses the association between intake of folate and B vitamins and the incidence of spontaneous abortion (SA) according to the maternal methylenetetrahydrofolate reductase (MTHFR) polymorphisms (677 C>T and 1298 A>C).

Material And Methods: We conducted a nested case-control study within a perinatal cohort of women recruited in the state of Morelos, Mexico. Twenty-three women with SA were compared to 74 women whose pregnancy survived beyond week 20th.

Maternal MTHFR 677C>T genotype and dietary intake of folate and vitamin B(12): their impact on child neurodevelopment.

Using the Bayley test, the mental and psychomotor development in a cohort of 253 children were evaluated. Maternal dietary intake of vitamin B(12) and folate was assessed from a semiquantitative questionnaire administered during the first trimester of pregnancy. Maternal genotypes of MTHFR (677C>T and 1298A>C), were ascertained by PCR-RFLP.

Dietary consumption of phytochemicals and breast cancer risk in Mexican women.

Objective: To perform an evaluation of selected phytochemicals intake and breast cancer (BC) risk in Mexican women.

Design: We conducted hospital-based case-control study.

Setting: Mexico City between 1994 and 1996.