Nayka Díaz

Followers

Following

Public Views

Interests

Uploads

Papers by Nayka Díaz

Household food security, anthropometric assessment of nutritional status and socioeconomic status of families in an urban community

TAYACAJA

Insufficient food production and low incomes are common problems in developing countries, thus pe... more Insufficient food production and low incomes are common problems in developing countries, thus perpetuating malnutrition and poverty conditions; establishing food security as an indicator of great impact to estimate the quality of life of families. The objective of this study was to assess the level of food security, nutritional status and socioeconomic status of families in an urban community. 155 families from an urban community of Naguanagua, Carabobo state, Venezuela were evaluated during the months August-September 2018. An ad hoc clinical history was designed, the Household Food Insecurity (FI) Scale was applied, the nutritional status was assessed by body mass index (BMI), mid-upper arm circumference (MUAC) and waist-to-height ratio (WHtR); as well as the socioeconomic status (Graffar-Méndez Castellano and the Poverty Threshold). 58.1% of families presented mild FI. 19.5% of the pediatric group presented malnutrition, while in adults, overweight and obesity stood out (44.1%);...

Proteína C Reactiva, Su Relación Con El Estado Nutricional y Perfil Lipídico en Mujeres Posmenopáusicas

Rev Venez Endocrinol Metab 2011; 9(3):106-111 RESUMEN Objetivo: En la mujer posmenopáusica se inc... more Rev Venez Endocrinol Metab 2011; 9(3):106-111 RESUMEN Objetivo: En la mujer posmenopáusica se incrementa el riesgo de enfermedades cardiovasculares (ECV), asociado a un perfil lipídico aterogénico y a la elevación de la proteína C reactiva ultrasensible (PCRus), marcador proinflamatario considerado importante predictor para estas patologías. El objetivo del estudio fue determinar los niveles séricos de PCRus, su relación con el estado nutricional y perfil lipídico en mujeres posmenopáusicas venezolanas. Métodos: Se seleccionaron 61 mujeres, sanas, residenciadas en el Municipio Naguanagua, con edades comprendidas entre 45 y 60 años. Se clasificó estado nutricional según IMC (OMS). Se evaluó PCRus, perfil lipídico y estradiol. Resultados: Los valores promedios de los parámetros bioquímicos fueron: PCRus (3,16±2,0mg/L), colesterol total (249±58mg/dL), c-HDL (42± 10mg/dL), c-LDL (176±55mg/dL), triglicéridos(151±70mg/dL), índices aterogénicos CT/HDL (6,2±1,9) y LDL/HDL (4,5±1,8). El 60,7...

Download

Validez del índice energía/proteína en la identificación de la malnutrición por exceso en preescolares venezolanos de bajo estrato socioeconómico

Archivos latinoamericanos de nutrición

Prácticas inadecuadas de alimentación entre el 4º y 6º mes de vida y su asociación con el déficit nutricional en un grupo de lactantes venezolanos

Archivos latinoamericanos de nutrición

Las adecuadas prácticas de alimentación son fundamentales para la salud, la nutrición y el crecim... more Las adecuadas prácticas de alimentación son fundamentales para la salud, la nutrición y el crecimiento infantil. A fin de detectar asociaciones entre la práctica inadecuada de la lactancia materna en los primeros 4 y 6 meses de vida y las deficiencias en el crecimiento y malnutrición, se evaluaron 240 lactantes menores de 24 meses, en una zona urbana de bajos recursos socioeconómicos de la ciudad de Valencia, Venezuela (2006). Para la práctica de la lactancia materna se identificaron dos grupos; lactantes que recibieron sólo lactancia materna exclusiva (LME) en dicho periodo de tiempo y aquellos que no la recibieron con exclusividad; lactancia predominante/complementaria (No LME). Se calcularon puntajes Z para los indicadores Peso/Talla (P/T) y Talla/Edad (T/E), según la referencia del CDC. Se consideró déficit a todo valor por debajo de -2 Z;normalidadentre -2 Z y + 2 Z y el exceso; > +2 Z. Para las asociaciones se utilizó la prueba no paramétrica de Mann Whitney y un Odds ratio...

Download

[Relationship between serum lipids and status of vitamin C and E as antioxidants in Venezuelan elderly people]

Archivos latinoamericanos de nutrición, 2008

During aging there is a tendency towards hyperlipidemia and changes in the distribution of lipopr... more During aging there is a tendency towards hyperlipidemia and changes in the distribution of lipoproteins. A decline in the functioning of the body's antioxidant defense system is also observed at this time. The objective of this study was to establish the relationship between serum concentrations of total cholesterol and fractions, triglycerides, and Vitamins C and E. 61 adults over 60 years of age were evaluated from January to March, 2006. Nutritional status was diagnosed by BMI (WHO); serum levels of triglycerides (TG), total cholesterol (TC) and fractions (HDL-c and LDL-c) were determined by enzyme method; Vitamin C (colorimetric method) and Vitamin E by HPLC. ATPIII values were used as a reference for risk of TG, TC, HDL, LDL-c, vitamin C: > 0.9 mg/dL (normal), < 0.9 mg/dL (deficit); vitamin E: = 1300 microg/dL (normal), 1300 = microg /dL (deficit). Consumption of vitamins C and E were estimated by the direct weighing method 3 days per week. According to BMI, 19.7% had...

[Inadequate feeding practices between month 4 and 6 and its association with nutritional deficit in a group of Venezuelan lactating infants]

Archivos latinoamericanos de nutrición, 2008

Adequate practices in food consumption are fundamental for child health, nutrition and growth. In... more Adequate practices in food consumption are fundamental for child health, nutrition and growth. In order to detect associations between the inadequate practice of exclusive breastfeeding (EBF), predominant and/or complimentary in the first 4 to 6 months of life, and deficiencies in growth and malnutrition, 240 lactating infants younger than 24 months were evaluated in a low income urban area in the city of Valencia, Venezuela (2006). For the practice of breastfeeding, two groups were identified: children who received EBF in that period of time, and those who did not receive it (No EBF). Z scores were calculated for the indicators of Weight for Height (W/H) and Height for Age (H/A), using the CDC reference. Any value under -2 Z was considered deficient, normal between -2 Z y +2 Z, and excess >+2 Z. The non-parametrical Mann-Whitney test and Odd ratio (95% confidence interval) were used for associations. 27% of the children received EBF. The deficit for W/H and H/A was of 11,3% and ...

[Serum homocysteine, folate and vitamin B12 in venezuelan elderly]

Archivos latinoamericanos de nutrición, 2007

The anatomical and physiological changes of aging make elderly people a vulnerable group to malnu... more The anatomical and physiological changes of aging make elderly people a vulnerable group to malnutrition and specific deficiencies of nutrients such as vitamin B12 and folate. This study was aimed to establish relationships among serum vitamin B12, folate, homocysteine concentrations and dietary intake and adequacy. Fifty five male and female elderly (60 and more years), free-living, were assessed. Measurements were: serum vitamin B12 and folate by radioimmunoanalysis (RIA), homocysteine by polarized fluorescence immunoassay, nutrient intake by three 24 hours recalls and food frequency questionnaire. Nutritional status was determined by Body Mass Index (BMI). Serum vitamin B12 and folate were at normal range (423,3+/-227,6 pmol/l and 6,4 +/- 4,5 mg/ml), but 17,5% of elderly had B12 deficiency and 12% had folate deficiency. Serum homocysteine was higher than reference values (15,8+/-4,4 mmol/l), but 47,5% showed concentrations above 15 mmol/L, male population showed higher mean value...

Download

[Nutritional status by social stratification in Venezuelan school children]

Acta científica venezolana, 2002

This study assessed nutritional status of 590 children from Naguanagua, Valencia, attending schoo... more This study assessed nutritional status of 590 children from Naguanagua, Valencia, attending school, aged between 4 and 14 years and its relation to social stratification, age and gender. Body dimension indicators were used for nutritional diagnosis. NCHS/OMS and Frisancho references were used for height/age (HA) weight/height (WH) cut-off points, and body mass index (BMI). Graffar modified by Mendez was used to establish socioeconomic status. Statistical analyses included descriptives, x2 and student-test. 91% of the children were in poverty, (71% relative and 20% critical). For HA, 6.4% classified as short, 27.6% in risk, and 4.9% tall for age without significative differences between sex. For WH, 0.6% were in nutritional deficit, 10.2% in risk and 22.1% in excess. For BMI, 12.9% had nutritional deficit, 7.3% excess but no significative differences for sex. Stunting and deficit were present in all age groups, but more significantly in those older than 10 years (12%; 23.9% respectiv...

[Validity of the energy/protein index in the detection of overweight in low income Venezuelan preschoolers]

Archivos latinoamericanos de nutrición, 2006

The validity of the energy/protein index (EPI) in the detection of overweight was assessed in 163... more The validity of the energy/protein index (EPI) in the detection of overweight was assessed in 163 low income children (four to six years old) from Valencia, Venezuela. Weight, height, arm circumference, and skinfolds were taken. Weight for height (W/H), limb fat area (LFA), and EPI were calculated. All subjects with W/H < or =p10 were considered deficient, with W/H between >p10 and < or =p90 normal, and with W/H and LFA >p90 in excess. Percentile distribution of EPI for age and gender was calculated, regarding below the norm all subjects < or =p10, normal those > p10 and p90, and above the norm those >p90. Validity was assessed through sensibility, specificity, and likelihood ratio. Student's t test and ANOVA were used for group comparisons (p < 0.05). According to the nutritional diagnosis, 27.60% of the children were deficient, 66.88% normal, and 15.52% in excess. According to the EPI, 7.36% of the sample was considered below the norm, 82.20% normal, an...

[Nutritional characterization by anthropometrics of institutionalized and non-institutionalized elderly Venezuelan]

Investigación clínica, 2005

In order to evaluate nutritional status by anthropometry, a group of elderly (60 to 83 years old)... more In order to evaluate nutritional status by anthropometry, a group of elderly (60 to 83 years old) was studied: 63 institutionalized and 37 non-institutionalized elderly from Valencia city, Venezuela. Weight, height, triceps skinfold and mid-arm circumference were measured and the body mass index (weight/height2) was calculated. The average age for the institutionalized group was 77.3 +/- 7.5 years old and 69.5 +/- 7.6 years old for the free-living elderly group. Tricipital skinfold (TSF) and mid-arm circumference (MAC) means were within the normal reference range for both groups, without significant differences by sex. Body mass index (BMI) was higher in the institutionalized group. Lower BMI and MAC were found in older elderly (> or =80 y). According to the nutritional classification by BMI, 16% of nutritional deficit, 45% of normal status and 39.7% with of excess weight were found in institutionalized elderly; while in free-living elderly, prevalences were 8%, 62% and 29.7% res...

[Nutritional status in preschoolers attending a public day-care center in Valencia, Venezuela]

Archivos latinoamericanos de nutrición, 2007

With the purpose of evaluating nutritional status in a group of preschoolers attending a public d... more With the purpose of evaluating nutritional status in a group of preschoolers attending a public day care center in Valencia, Venezuela (2002), a research was made for social stratus, anthropometric variables; weight, height and arm circumference, hemoglobin, seric retinol, presence of parasitosis and food consumption, as well as the mother's educational level. The program SPSS 11.0 and the t Student, ANOVA Post Hoc from Bonferroni and Fisher (p < 0.05) were used. A predominance of the female sex was presented (52%). According to the social stratus, 23.3% was located in the middleclass, and 76.8% on some level of poverty. 60% of the middleclass mothers had finished their high school education, while only 9.8% of the mothers in poverty had reached that level. According to the Z values (H/A, W/H and AC/H), high percentages under -1.00 were observed (27.3%, 25.6% and 24.5%, respectively). The W/H and AC/H of children of mothers studying in a university presented discrepancies whe...

Estado Nutricional, Indicadores Antropométricos y Homocisteína Sérica en Mujeres Posmenopáusicas Venezolanas

Revista chilena de nutrición, 2011

mujer, se caracteriza por cambios significativos a nivel orgánico, psicológico y social, debido a... more mujer, se caracteriza por cambios significativos a nivel orgánico, psicológico y social, debido a modificaciones en la función endocrina, con disminución de los niveles circulantes de estrógenos, que dan lugar a alteraciones a nivel de la composición corporal, con el aumento del tejido adiposo y del peso corporal y modificaciones en la distribución de grasa, debido a la marcada influencia de estas hormonas sobre este tejido (1,2). Entre los indicadores antropométricos que evalúan estos cambios , se encuentran el índice de masa corporal (IMC), que permite categorizar el estado nutricional y diagnosticar estados de malnutrición por exceso como el

Download

Homocisteína, acido fólico y vitamina B 12 en adultos mayores venezolanos

RESUMEN. Los cambios anatomo-fisiológicos propios del envejecimiento hacen de los adultos mayores... more RESUMEN. Los cambios anatomo-fisiológicos propios del envejecimiento hacen de los adultos mayores un grupo vulnerable a los estados de malnutrición y deficiencias específicas de nutrientes como la vitamina B 12 y el folato. El objetivo de este estudio fue establecer la relación existente entre la vitamina B 12 , folato, homocisteína y el consumo y adecuación de estos nutrientes. Se evaluaron 55 adultos mayores de 60 años de edad, de ambos sexos, no institucionalizados, a quienes se les determinó homocisteína sérica por inmunoensayo de polarización de fluorescencia, vitamina B 12 y folato sérico por radioensayo (RIA); consumo de nutrientes según recordatorio de 24 h y frecuencia de consumo de alimentos y estado nutricional antropométrico según Indice de Masa Corporal (IMC). Se encontraron niveles séricos de vitamina B 12 y folato dentro de los valores de referencia (423,3± 227,6 pmol/l y 6,4 ± 4,5 mg/ml); sin embargo, 17,5% se encontraban deficitarios de B 12 y 12% de ácido fólico, la homocisteína sérica estuvo por encima de los valores de referencia (15,8±4,4 mmol/l). Del grupo de estudio, 47,5% presentaban hiperhomocisteinemia (>15mmol/L), siendo significativamente más alta para el sexo masculino (p: 0,01). El consumo de nutrientes fue inadecuado por déficit. Según IMC, 11,8% de los adultos mayores se encontraban en déficit nutricional, 29,4% con sobrepeso y 20,6% en obesidad. Se observó una correlación inversa y negativa entre homcisteína y folato sérico. Todo esto sugiere la presencia de una deficiencia bioquímica de B 12 y folato, que se traduce en la homocisteína elevada, lo que constituye un factor de riesgo cardiovascular en este grupo de adultos mayores. Palabras clave: Adultos mayores, homocisteína, folato, vitamina B 12. SUMMARY. Serum homocysteine, folate and vitamin B 12 in Venezuelan elderly. The anatomical and physiological changes of aging make elderly people a vulnerable group to malnutrition and specific deficiencies of nutrients such as vitamin B 12 and folate. This study was aimed to establish relationships among serum vitamin B 12 , folate, homocysteine concentrations and dietary intake and adequacy. Fifty five male and female elderly (60 and more years), free-living, were assessed. Measurements were: serum vitamin B 12 and folate by radioimmunoanalysis (RIA), homocysteine by polarized fluorescence immunoassay, nutrient intake by three 24 hours recalls and food frequency questionnaire. Nutritional status was determined by Body Mass Index (BMI). Serum vitamin B 12 and folate were at normal range (423,3±227,6 pmol/l and 6,4 ± 4,5 mg/ml), but 17,5% of elderly had B 12 deficiency and 12% had folate deficiency. Serum homocysteine was higher than reference values (15,8±4,4 mmol/l), but 47,5% showed concentrations above 15mmol/L, male population showed higher mean value (p: 0,01). Nutrient intake was inadequate by deficiency. BMI indicated 11,8% of undernutrition, 29,4% of overweight and 20,6% of obesity A negative and inverse correlation between homocysteine and serum folate was found. Results suggest a biochemical deficiency of B 12 and folate that is expressed as elevated homocysteine levels. These finding represent a high cardiovascular risk factor for this elderly group.

Download

Caracterización nutricional antropométrica de ancianos institucionalizados y no institucionalizados

Invest Clin, 2005

Resumen. A fin de caracterizar el estado nutricional antropométrico de un grupo de ancianos se es... more

Estado de vitamina A y su relación con antecedentes infecciosos en escolares venezolanos

Anales Venezolanos de …, 2008

Vitamin A (VA) is an essential micronutrient for the immune system and several researchs have sho... more Vitamin A (VA) is an essential micronutrient for the immune system and several researchs have shown a synergic relationship between vitamin A status and morbidity. The aim was to show the relationship between serum retinol level, Conjunctival Impression Cytology (CIC), anthropometric status, and morbidity in low income school children. 445 children (both genders) between 4 and 13 years old were assessed. Serum retinol levels (HPLC-r), Creactive protein (nefelometry) and CIC (ICEPO), anthropometric indicators (Weight-height (WH), height-age (HA) according to national references values), morbidity (diarrhea, respiratory tract infections, measles, and parasitosis) two months prior to the evaluation, were determined. The poverty was 92.3%, wasting (WH ≤ p10) 7%, overweight (WH > p90) 10.8%, and stunting (HA = p3) 1.5%. 18% had one or more diarrhea episodes, 39.8% upper respiratory tract infections, 28.1% lower respiratory tract infections, and 32.8% intestinal parasitosis; 10.3% showed a high level of C-reactive protein (CRP > 10mg/L). The average retinol level was 35.7 ± 9.2μg/dL, with 0.7% low level (< 20μg/dL), 27.4% of the children at risk of vitamin A deficiency (20-30μg/dL), and 9.5% deficient according CIC. There was a significant correlation between serum retinol and CIC, and a significant association between serum retinol and upper respiratory tract infections, but not between morbidity and CIC. There was not a significant association between anthropometric indicators and vitamin A status and morbidity. In this study it was not possible to demonstrate the relationship between vitamin A status and diarrhea, measles, lower respiratory tract infections and parasitosis but the high prevalence of marginal serum retinol levels and morbidity in this group makes it susceptible to nutritional surveillance.

Download

Estado nutricional en niños preescolares que asisten a un jardín de infancia público en Valencia, Venezuela

Arch latinoam …, 2007

A fin de evaluar el estado nutricional en un grupo de preescolares que asisten a un jardín de inf... more

Nayka Díaz

Uploads

Papers by Nayka Díaz

Log In