maría reyna sámano | Instituto Nacional de Perinatologia (original) (raw)
Papers by maría reyna sámano
![Research paper thumbnail of [Determination of 2-HYDROXYESTRONE /16Α-HYDROXYESTRONE Ratio in Urine of Mexican Women as a Risk Indicator for Breast Cancer and Its Relationship with Other Risk Factors]](https://attachments.academia-assets.com/81541268/thumbnails/1.jpg)
](Nutrición hospitalaria, 2014
The urinary ratio 2-hydroxyoestrone/16-hydroxyoestrone (URME), has been proposed in various popu... more The urinary ratio 2-hydroxyoestrone/16-hydroxyoestrone (URME), has been proposed in various populations on the world as a risk indicator for breast cancer (BC), however in the Mexican population has never been determined. To determine URME Mexican women and establish its relationship with risk factors for BC. Cross-sectional study of 142 premenopausal and 42 posmenopausal women. The URME was determined with the kit ESTRAMETTM and was related to risk factors for BC. Correlations and linear regressions were performed. The median URME was 0.90 (RIQ 0.64-1.18). The body mass index (BMI) and early menarche contribute 5.4% of their variability (F=5.17; p.
Advances in Experimental Medicine and Biology, 2004
A woman gains 37% of her bone mass during adolescence. When an adolescent experiences pregnancy a... more A woman gains 37% of her bone mass during adolescence. When an adolescent experiences pregnancy and lactation, her metabolism is challenged to support her own growth while providing the energy and nutrient requirements of fetal growth and milk synthesis.
Molecules, 2021
Presently, biopreservation through protective bacterial cultures and their antimicrobial products... more Presently, biopreservation through protective bacterial cultures and their antimicrobial products or using antibacterial compounds derived from plants are proposed as feasible strategies to maintain the long shelf-life of products. Another emerging category of food biopreservatives are bacteriophages or their antibacterial enzymes called “phage lysins” or “enzybiotics”, which can be used directly as antibacterial agents due to their ability to act on the membranes of bacteria and destroy them. Bacteriophages are an alternative to antimicrobials in the fight against bacteria, mainly because they have a practically unique host range that gives them great specificity. In addition to their potential ability to specifically control strains of pathogenic bacteria, their use does not generate a negative environmental impact as in the case of antibiotics. Both phages and their enzymes can favor a reduction in antibiotic use, which is desirable given the alarming increase in resistance to an...
BMC pregnancy and childbirth, Jan 16, 2017
In the last 20 years, adolescent pregnancy has become one of the most critical problems affecting... more In the last 20 years, adolescent pregnancy has become one of the most critical problems affecting women in Latin America and the Caribbean. This qualitative study was based on in-depth interviews with 29 teen mothers. All of the pregnant teens were from low- to lower-middle-class social strata in the Mexico City metropolitan area. The family (living with the girl) and the individual context of pregnant teens were analysed on the basis of data from at least three interviews: during pregnancy and at approximately 6 and 24 months following delivery. Additionally, six mothers, four fathers, and four partners of the pregnant girls of the group were interviewed. The information on the individual and family situation before, during and after the pregnancy was recorded and transcribed, then analysed in three phases, comprising pre-analysis, exploration and interpretation. The pregnant teens had a family background of teen pregnancy. The girls disclosed feelings of repression, loneliness and...
![Research paper thumbnail of [Adolescents increase to more gestational weight and fat than adults according to BMI pre-gestational]](https://attachments.academia-assets.com/81541055/thumbnails/1.jpg)
](Revista de investigación clínica; organo del Hospital de Enfermedades de la Nutrición
The excessive gestational weight gain predisposes to overweight and obesity postpartum, this beco... more The excessive gestational weight gain predisposes to overweight and obesity postpartum, this becomes a worldwide public health problem. To analyze gestational weight pattern and body fat in adolescents and adult women, to identify the group that would have major weight and body fat gain. A prospective cohort study done in 64 adolescent < or = 18 years and 48 adult women. Anthropometric evaluation was realized, at 20, 24, 28, 32, 36 and 38 gestational weeks with weight and body fat percentage. Patients signed letter informed consent. In adolescents weight and BMI were smaller (p < 0.001), and their gestational fat gain was bigger than in the adult women (5.31 vs. 4.12 kg; p < 0.001). Pre-gestational BMI (beta = 0.459, EE = 0.089, p = 0.001), and age group (beta = - 1.400, EE = 0.735, p = 0.060) were associated to fat percentage variability. The adolescents with low weight and BMI > or = 85th percentile showed a greater gain of weight in respect to which is classified as n...
![Research paper thumbnail of [Association of consumption of carbonated beverages and decalcification in woman on reproductive and non-reproductive age of Mexico City]](https://attachments.academia-assets.com/81541026/thumbnails/1.jpg)
](Nutrición hospitalaria
There is not enough information about carbonated beverages (CB) consumption in Mexican women and ... more There is not enough information about carbonated beverages (CB) consumption in Mexican women and its association with bone mineral density (BMD). The objective was to identify the association of CB consumption with BMD in two groups of Mexican women. Transversal study with 328 women in reproductive age (WRA) and not reproductive (WNRA) with diet and anthropometric evaluation and BMD. Mean age of 18.7 years in WRA and 47 in WNRA. Energy adequacy percentage was lower in WNRA (98 ± 28% vs 144 ± 55) (p = 0.001), calcium intake was < 700 mg/day in women with osteopenia of both groups and median consumption of CB was higher in WRA, with 200 mL/day (0-462) vs 0 (0-250) in WNRA (p = 0.001), WRA with osteopenia drank 500 mL/day (253-750) of CB vs 100 (0-200) in who had not (p = 0.001). Anthropometric parameters were higher in WNRA (p =?0.002) and femoral neck BMD was lower (1.031 ± 0.14 vs 1.107 ± 0.10) (p = 0.001) and higher in L2-L4 (1.114 ± 0.13 vs 1.003 ± 0.09) (p = 0.001) in WRA. Var...
Food &# 38; …, 2008
Delivered by Publishing Technology to: ? IP: 93.91.26.12 on: Tue, 23 Nov 2010 20:13:18 Copyright ... more Delivered by Publishing Technology to: ? IP: 93.91.26.12 on: Tue, 23 Nov 2010 20:13:18 Copyright (c) Nevin Scrimshaw International Nutrition Foundation. All rights reserved. ... 334 Food and Nutrition Bulletin, vol. 29, no. 4 © 2008, The United Nations University.
Salud Pública de …, 2011
To analyze the pattern of bone mineral density (BMD), serum concentrations of estradiol and calci... more To analyze the pattern of bone mineral density (BMD), serum concentrations of estradiol and calcium levels, dietary calcium, body mass index (BMI), and lactation in adolescents and adult women at 15, 90, and 365 postpartum days (ppd). A prospective cohort study was conducted of 33 adolescents and 39 adult women. Anthropometric and dietetic evaluations were performed, as well as evaluations of bone mineral density in L2-L4 and femur neck. Estradiol concentrations and calcium serum levels were determined. L2-L4 BMD increased by 16% in adolescents, and 3% in adult women from day 15 to 365 ppd. While age was associated with this change (β=13.779, EE=3.5, p=0.001), lactation was not (β=-0.705, EE=0.647, p=0.283). The adult women had a higher L2-L4 BMD at 15, 90, and 635 ppd (1.151 vs 0.978 g/cm², 1.195 vs 1.070 g/cm², 1.195 vs 1.123 g/cm², respectively) (p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.003). Adolescents&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; BMD increased three times more than that of adult women. For all women, BMD was dependent of age and independent of lactation.
Resumen es: Antecedentes: en ciclos tempranos de la vida se aprenden las practicas alimentarias q... more Resumen es: Antecedentes: en ciclos tempranos de la vida se aprenden las practicas alimentarias que condicionan el estado nutricional en etapas posteriores; si estas...
Ciência & Saúde Coletiva, 2014
Para favorecer una alimentación correcta la orientación alimentaria debe considerar factores soci... more Para favorecer una alimentación correcta la orientación alimentaria debe considerar factores socioculturales que condicionen patrones y preferencias del consumo de alimentos propios de cada población. El objetivo de esta investigación fue describir el contexto sociocultural del embarazo y su alimentación en el ámbito doméstico, mediante un enfoque cualitativo. Se realizaron entrevistas en profundidad a 6 mujeres con embarazo de alto riesgo bajo la técnica de saturación de la información. Las entrevistas se transcribieron y analizaron de acuerdo a Bardín con ayuda del programa Atlas TI. Se identificó: incertidumbre por el embarazo no planeado y poco apoyo de la pareja; ciertos cambios en la alimentación para mejorar la salud; percepción de una mala y buena alimentación, aunque ésta no cumplía con las características de una dieta correcta; omisión de la cena y del grupo de verduras y frutas. Las encargadas de preparar y servir los alimentos no siempre fueron las mujeres embarazadas; l...
Journal of Obesity, 2014
Introduction.There are not enough studies about the barriers to lose weight from the perspective ... more Introduction.There are not enough studies about the barriers to lose weight from the perspective of children and their parents.Methods.Children and adolescents diagnosed with overweight/obesity in the Department of Endocrinology and their parents were invited to participate in a series of focus group discussions (FGD). Twenty-nine children 10–16 years old and 22 parents participated in 7 focus groups; 2 mothers and 2 adolescents participated in depth interviews. All interviews were recorded, transcribed, and analyzed through grounded theory.Results.Parents went to the hospital only when their children presented any obesity complication; for them, overweight was not a health problem. Parents referred to lack of time to supervise about a healthy diet and exercise; besides, the same parents, relatives, friends, and the mass media encourage the consumption of junk food. Children accepted eating a lot, not doing exercise, skipping meals, and not understanding overweight consequences. Bot...
Ethnicity & Disease, 2016
Objective: We studied multi-loci variants to identify the contribution of six candidate genes (AD... more Objective: We studied multi-loci variants to identify the contribution of six candidate genes (ADIPOQ, CDH13, LYPLAL1, MC4R, PPARG and PGC1A) in the development of obesity and overweight. Design: We genotyped 404 chromosomes with eleven SNPs in Mexican female adolescents, who were subdivided into two groups (obesity-overweight and normal-weight) using the World Health Organization parameters. Genomic (800 chromosomes) and ancestral (208 chromosomes) controls were included to reduce the population bias. Anthropometric measurements, biochemical parameters, and caloric intake were obtained only in the groups of Mexican female adolescents. Results: A positive genotype-phenotype association was found that involves the multi-allelic combination of three risk alleles (one in PPARG and two in LYPLAL1) with obesity and overweight (OR=3.1, P=.010). This combination also exhibited a significant association with waist circumference (P=.030) and triglycerides levels (P=.030). These associations were supported by a logistic regression analysis adjusted for several confounding variables. Conclusions: Our data suggest the joint participation of PPARG-LYPLAL1 genes in metabolic disorders development. Hence, these genes could act as potential biomarkers in obesity and overweight. Our findings underscore the complexity of metabolic disorders and provide evidence about the importance of multi-loci analysis to study complex diseases.
The Faseb Journal, Apr 1, 2007
Nutrición hospitalaria, 2014
The urinary ratio 2-hydroxyoestrone/16-hydroxyoestrone (URME), has been proposed in various popu... more The urinary ratio 2-hydroxyoestrone/16-hydroxyoestrone (URME), has been proposed in various populations on the world as a risk indicator for breast cancer (BC), however in the Mexican population has never been determined. To determine URME Mexican women and establish its relationship with risk factors for BC. Cross-sectional study of 142 premenopausal and 42 posmenopausal women. The URME was determined with the kit ESTRAMETTM and was related to risk factors for BC. Correlations and linear regressions were performed. The median URME was 0.90 (RIQ 0.64-1.18). The body mass index (BMI) and early menarche contribute 5.4% of their variability (F=5.17; p.
Advances in Experimental Medicine and Biology, 2004
A woman gains 37% of her bone mass during adolescence. When an adolescent experiences pregnancy a... more A woman gains 37% of her bone mass during adolescence. When an adolescent experiences pregnancy and lactation, her metabolism is challenged to support her own growth while providing the energy and nutrient requirements of fetal growth and milk synthesis.
Molecules, 2021
Presently, biopreservation through protective bacterial cultures and their antimicrobial products... more Presently, biopreservation through protective bacterial cultures and their antimicrobial products or using antibacterial compounds derived from plants are proposed as feasible strategies to maintain the long shelf-life of products. Another emerging category of food biopreservatives are bacteriophages or their antibacterial enzymes called “phage lysins” or “enzybiotics”, which can be used directly as antibacterial agents due to their ability to act on the membranes of bacteria and destroy them. Bacteriophages are an alternative to antimicrobials in the fight against bacteria, mainly because they have a practically unique host range that gives them great specificity. In addition to their potential ability to specifically control strains of pathogenic bacteria, their use does not generate a negative environmental impact as in the case of antibiotics. Both phages and their enzymes can favor a reduction in antibiotic use, which is desirable given the alarming increase in resistance to an...
BMC pregnancy and childbirth, Jan 16, 2017
In the last 20 years, adolescent pregnancy has become one of the most critical problems affecting... more In the last 20 years, adolescent pregnancy has become one of the most critical problems affecting women in Latin America and the Caribbean. This qualitative study was based on in-depth interviews with 29 teen mothers. All of the pregnant teens were from low- to lower-middle-class social strata in the Mexico City metropolitan area. The family (living with the girl) and the individual context of pregnant teens were analysed on the basis of data from at least three interviews: during pregnancy and at approximately 6 and 24 months following delivery. Additionally, six mothers, four fathers, and four partners of the pregnant girls of the group were interviewed. The information on the individual and family situation before, during and after the pregnancy was recorded and transcribed, then analysed in three phases, comprising pre-analysis, exploration and interpretation. The pregnant teens had a family background of teen pregnancy. The girls disclosed feelings of repression, loneliness and...
Revista de investigación clínica; organo del Hospital de Enfermedades de la Nutrición
The excessive gestational weight gain predisposes to overweight and obesity postpartum, this beco... more The excessive gestational weight gain predisposes to overweight and obesity postpartum, this becomes a worldwide public health problem. To analyze gestational weight pattern and body fat in adolescents and adult women, to identify the group that would have major weight and body fat gain. A prospective cohort study done in 64 adolescent < or = 18 years and 48 adult women. Anthropometric evaluation was realized, at 20, 24, 28, 32, 36 and 38 gestational weeks with weight and body fat percentage. Patients signed letter informed consent. In adolescents weight and BMI were smaller (p < 0.001), and their gestational fat gain was bigger than in the adult women (5.31 vs. 4.12 kg; p < 0.001). Pre-gestational BMI (beta = 0.459, EE = 0.089, p = 0.001), and age group (beta = - 1.400, EE = 0.735, p = 0.060) were associated to fat percentage variability. The adolescents with low weight and BMI > or = 85th percentile showed a greater gain of weight in respect to which is classified as n...
Nutrición hospitalaria
There is not enough information about carbonated beverages (CB) consumption in Mexican women and ... more There is not enough information about carbonated beverages (CB) consumption in Mexican women and its association with bone mineral density (BMD). The objective was to identify the association of CB consumption with BMD in two groups of Mexican women. Transversal study with 328 women in reproductive age (WRA) and not reproductive (WNRA) with diet and anthropometric evaluation and BMD. Mean age of 18.7 years in WRA and 47 in WNRA. Energy adequacy percentage was lower in WNRA (98 ± 28% vs 144 ± 55) (p = 0.001), calcium intake was < 700 mg/day in women with osteopenia of both groups and median consumption of CB was higher in WRA, with 200 mL/day (0-462) vs 0 (0-250) in WNRA (p = 0.001), WRA with osteopenia drank 500 mL/day (253-750) of CB vs 100 (0-200) in who had not (p = 0.001). Anthropometric parameters were higher in WNRA (p =?0.002) and femoral neck BMD was lower (1.031 ± 0.14 vs 1.107 ± 0.10) (p = 0.001) and higher in L2-L4 (1.114 ± 0.13 vs 1.003 ± 0.09) (p = 0.001) in WRA. Var...
Food &# 38; …, 2008
Delivered by Publishing Technology to: ? IP: 93.91.26.12 on: Tue, 23 Nov 2010 20:13:18 Copyright ... more Delivered by Publishing Technology to: ? IP: 93.91.26.12 on: Tue, 23 Nov 2010 20:13:18 Copyright (c) Nevin Scrimshaw International Nutrition Foundation. All rights reserved. ... 334 Food and Nutrition Bulletin, vol. 29, no. 4 © 2008, The United Nations University.
Salud Pública de …, 2011
To analyze the pattern of bone mineral density (BMD), serum concentrations of estradiol and calci... more To analyze the pattern of bone mineral density (BMD), serum concentrations of estradiol and calcium levels, dietary calcium, body mass index (BMI), and lactation in adolescents and adult women at 15, 90, and 365 postpartum days (ppd). A prospective cohort study was conducted of 33 adolescents and 39 adult women. Anthropometric and dietetic evaluations were performed, as well as evaluations of bone mineral density in L2-L4 and femur neck. Estradiol concentrations and calcium serum levels were determined. L2-L4 BMD increased by 16% in adolescents, and 3% in adult women from day 15 to 365 ppd. While age was associated with this change (β=13.779, EE=3.5, p=0.001), lactation was not (β=-0.705, EE=0.647, p=0.283). The adult women had a higher L2-L4 BMD at 15, 90, and 635 ppd (1.151 vs 0.978 g/cm², 1.195 vs 1.070 g/cm², 1.195 vs 1.123 g/cm², respectively) (p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.003). Adolescents&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; BMD increased three times more than that of adult women. For all women, BMD was dependent of age and independent of lactation.
Resumen es: Antecedentes: en ciclos tempranos de la vida se aprenden las practicas alimentarias q... more Resumen es: Antecedentes: en ciclos tempranos de la vida se aprenden las practicas alimentarias que condicionan el estado nutricional en etapas posteriores; si estas...
Ciência & Saúde Coletiva, 2014
Para favorecer una alimentación correcta la orientación alimentaria debe considerar factores soci... more Para favorecer una alimentación correcta la orientación alimentaria debe considerar factores socioculturales que condicionen patrones y preferencias del consumo de alimentos propios de cada población. El objetivo de esta investigación fue describir el contexto sociocultural del embarazo y su alimentación en el ámbito doméstico, mediante un enfoque cualitativo. Se realizaron entrevistas en profundidad a 6 mujeres con embarazo de alto riesgo bajo la técnica de saturación de la información. Las entrevistas se transcribieron y analizaron de acuerdo a Bardín con ayuda del programa Atlas TI. Se identificó: incertidumbre por el embarazo no planeado y poco apoyo de la pareja; ciertos cambios en la alimentación para mejorar la salud; percepción de una mala y buena alimentación, aunque ésta no cumplía con las características de una dieta correcta; omisión de la cena y del grupo de verduras y frutas. Las encargadas de preparar y servir los alimentos no siempre fueron las mujeres embarazadas; l...
Journal of Obesity, 2014
Introduction.There are not enough studies about the barriers to lose weight from the perspective ... more Introduction.There are not enough studies about the barriers to lose weight from the perspective of children and their parents.Methods.Children and adolescents diagnosed with overweight/obesity in the Department of Endocrinology and their parents were invited to participate in a series of focus group discussions (FGD). Twenty-nine children 10–16 years old and 22 parents participated in 7 focus groups; 2 mothers and 2 adolescents participated in depth interviews. All interviews were recorded, transcribed, and analyzed through grounded theory.Results.Parents went to the hospital only when their children presented any obesity complication; for them, overweight was not a health problem. Parents referred to lack of time to supervise about a healthy diet and exercise; besides, the same parents, relatives, friends, and the mass media encourage the consumption of junk food. Children accepted eating a lot, not doing exercise, skipping meals, and not understanding overweight consequences. Bot...
Ethnicity & Disease, 2016
Objective: We studied multi-loci variants to identify the contribution of six candidate genes (AD... more Objective: We studied multi-loci variants to identify the contribution of six candidate genes (ADIPOQ, CDH13, LYPLAL1, MC4R, PPARG and PGC1A) in the development of obesity and overweight. Design: We genotyped 404 chromosomes with eleven SNPs in Mexican female adolescents, who were subdivided into two groups (obesity-overweight and normal-weight) using the World Health Organization parameters. Genomic (800 chromosomes) and ancestral (208 chromosomes) controls were included to reduce the population bias. Anthropometric measurements, biochemical parameters, and caloric intake were obtained only in the groups of Mexican female adolescents. Results: A positive genotype-phenotype association was found that involves the multi-allelic combination of three risk alleles (one in PPARG and two in LYPLAL1) with obesity and overweight (OR=3.1, P=.010). This combination also exhibited a significant association with waist circumference (P=.030) and triglycerides levels (P=.030). These associations were supported by a logistic regression analysis adjusted for several confounding variables. Conclusions: Our data suggest the joint participation of PPARG-LYPLAL1 genes in metabolic disorders development. Hence, these genes could act as potential biomarkers in obesity and overweight. Our findings underscore the complexity of metabolic disorders and provide evidence about the importance of multi-loci analysis to study complex diseases.
The Faseb Journal, Apr 1, 2007