oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 48 )

2019 ( 200 )

2018 ( 245 )

2017 ( 247 )

Custom range...

Search Results: 1 - 10 of 191697 matches for " Lesbia; Díaz "
All listed articles are free for downloading (OA Articles)
Page 1 /191697
Display every page Item
A granular formulation of nomuraea rileyi farlow (samson) for the control of spodoptera frugiperda (lepidoptera: noctuidae)
Pavone,Domenico; Díaz,Mayri; Trujillo,Lesbia; Dorta,Blas;
Interciencia , 2009,
Abstract: a granular formulation of the entomopathogenic fungus nomuraea rileyi (farlow) samson was evaluated against spodoptera frugiperda (lepidoptera: noctuidae). the formulation consisted of 1mm particles of defatted corn germ (dcg) containing 107 conidia/g. this preparation protected the conidia against uv radiation and killed 80% of s. frugiperda larvae in laboratory bioassays. it was shown that the fungus used dcg as a substrate for growth and sporulation, creating foci for further infection. this strategy has great potential for the formulation of fungal biocontrol agents, especially those with a high growth rate.
Caracterización Nutricional Antropométrica de Ancianos Institucionalizados y no Institucionalizados
Díaz,Nayka; Meertens,Lesbia; Solano,Liseti; Pe?a,Evelyn;
Investigación Clínica , 2005,
Abstract: 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 (3 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% respectively. even though normal nutritional status was highly prevalent, institutionalized elderly showed higher prevalences of nutritional alterations (underweight and overweight).
ESTADO NUTRICIONAL, INDICADORES ANTROPOMéTRICOS Y HOMOCISTEíNA SéRICA EN MUJERES POSMENOPáUSICAS VENEZOLANAS NUTRITIONAL STATUS, ANTHROPOMETRIC INDEX AND SERUM HOMOCYSTEINE IN POSTMENOPAUSAL VENEZUELAN WOMEN
Lesbia Meertens,Nayka Díaz,Carlos Fraile,Melissa Riera
Revista Chilena de Nutricíon , 2011,
Abstract: La menopausia se asocia a un aumento del peso corporal y a cambios en la distribución de grasa, describiéndose también niveles elevados de homocisteína, factores de riesgo cardiovascular asociados al déficit de estrógenos. El objetivo de este estudio fue evaluar índice de masa corporal (IMC), la circunferencia de cintura (CCi), el índice cintura-cadera (ICC), la homocisteína sérica en mujeres posmenopáusicas (n: 128). El diagnóstico nutricional antropométrico se determinó según IMC (OMS); se determinaron la CCi (normal <88cm, en riesgo >88cm), ICC (normal <0,8, en riesgo >0,8), homocisteína sérica (tHci) (ELISA): normal < 10mmol/L, en riesgo >10-15mmol/L, alta: >15mmol/L y estradiol (ELISA): <65pg/mL (posmenopausia). 65,9% presentaron sobrepeso/ obesidad. 47,3% y 82,2% en riesgo cardiometabólico según CCi e ICC. Hubo diferencia significativa para ICC y correlación positiva significativa entre indicadores antropométricos. 10% presentó riesgo e hiperhomocisteinemia. Este aminoácido no correlacionó con las variables evaluadas. Las mujeres evaluadas presentaron una alta frecuencia de sobrepeso-obesidad y una distribución de grasa tipo androide, presentando un alto riesgo para enfermedades cardiometabólicas. Menopause is associated with an increased body weight and changes in fat distribution, high levels of homocysteine and cardiovascular risk factors associated with estrogen deficiency. The objective was to evaluate body mass index (BMI), waist circumference (WC), waist/hip index (WHI), and serum homocysteine (Hct) levels in postmenopausal women (n 128). Nutritional status was diagnosed by BMI (WHO), WC (normal <88cm, at risk> 88cm), WHI (normal <0.8, at risk> 0.8), serum homocysteine (Hct) (ELISA) normal < 10 mmol/L, at risk >10-15mmol/L, high >15mmol/L and estradiol (ELISA) <65pg/mL (menopause). Sixty five point nine % were overweight/obese, 47.3% and 82.2% showed cardio metabolic risk by WC and WHI. There was a significant difference for WHI, and a positive significant correlation between anthropometrics indexes. Ten % showed risk and hyperhomocysteinaemia, but it was not correlated with the evaluated variables. The subjects had a high frequency of overweight, obesity and android fat distribution, showing a high risk for cardiometabolics diseases.
Caracterización Nutricional Antropométrica de Ancianos Institucionalizados y no Institucionalizados Nutritional Characterization by Anthropometrics of Institutionalized and non-Institutionalized Elderly Venezuelan.
Nayka Díaz,Lesbia Meertens,Liseti Solano,Evelyn Pe?a
Investigación Clínica , 2005,
Abstract: A fin de caracterizar el estado nutricional antropométrico de un grupo de ancianos se estudiaron 63 adultos mayores institucionalizados y 38 no institucionalizados de la ciudad de Valencia, Venezuela. El rango de edades del grupo estudiado fue de 60 a 83 a os. Se midió peso, talla, pliegue tricipital, circunferencia del brazo izquierdo y se calculó índice de masa corporal (peso/talla2). La edad promedio fue para los institucionalizados 77,3 ± 7,4 a os y de 69,5 ± 7,6 a os en los no institucionalizados. Los promedios de pliegue tricipital (PT) y circunferencia del brazo (CB) estuvieron dentro del rango normal en ambos grupos, siendo mayores para los no institucionalizados. El PT de los hombres institucionalizados estuvo en el rango de déficit (9,3 ± 1,6) siendo significativa la diferencia con los no institucionalizados. El IMC estuvo en el rango del sobrepeso para los hombres residenciados en sus hogares (25,2 ± 1,2) y para las mujeres institucionalizadas (26,8 ± 1,2). Al clasificar el estado nutricional según IMC, en los ancianos institucionalizados se encontró 16% de déficit, 45% de normalidad y 33,3% de sobrepeso, siendo respectivamente las prevalencias de 8%, 62% y 29,7% en los no institucionalizados. El estado nutricional con mayor prevalencia fue el de normalidad según antropometría, sin embargo, en los ancianos institucionalizados se observó mayor prevalencia de malnutrición tanto en déficit como en exceso. 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% respectively. Even though normal nutritional status was highly prevalent, institutionalized elderly showed higher prevalences of nutritional alterations (underweight and ove
Relación entre lípidos séricos y estado de las vitaminas C y E como antioxidantes en adultos mayores venezolanos
Meertens,Lesbia; Ruido,Tathiana; Díaz,Nayka; Naddaf,Gloria; Rodríguez,Adelmo; Solano,Liseti;
Archivos Latinoamericanos de Nutrición , 2008,
Abstract: 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 μg/dl (normal), 1300 = μg /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 nutritional deficit, 39.3% overweight, and 11.5% obesity. tg, tc, ldl-c levels were at risk in females, and hdl-c in both genders. prevalence of risk for heart disease was: tg (45.2%), hdl-c (51.1%), and ldl-c (52.5%). consumption and serum levels of vitamin e were low in both genders. there was no association between variables. a significant and positive correlation between tg, tc, ldl-c, serum vitamin e, and bmi was observed. the female group showed overweight, hypertriglyceridemia and hypercholesterolemia, hdl-c and ldl-c at risk, and vitamin e deficiency, all of which are important risk factors for cardiovascular disease in this age group.
Proteína C reactiva, su relación con el estado nutricional y perfil lipídico en mujeres posmenopáusicas
Barrios,Yubire; Meertens,Lesbia; Salim de Moron,Alba; Díaz,Nayka;
Revista Venezolana de Endocrinología y Metabolismo , 2011,
Abstract: objective: in postmenopausal women increases the risk of cardiovascular disease (cvd) associated with an atherogenic lipid profile and elevated circulating levels of high-sensitivity c-reactive protein (hscrp), considered important predictor proinflamatario marker for these diseases. the main purpose of this study was to evaluate the results of hscrp and their relationship with nutritional state according to index of mass coporal (bmi) and lipid profile in postmenopausal women venezuelans methods: 61 women were selected, healthy, residing in the municipality naguanagua, aged between 45 and 60, apparently healthy. nutritional status was classified according to bmi (who). we assessed hscrp, lipid profile and estradiol. results: mean values of biochemical parameters were: hscrp (3,16±2,0mg/l), total cholesterol (249±58mg/dl), hdl (42 ± 10mg/dl), ldl (176±55mg/dl), triglycerides (151±70mg/dl) and atherogenic index tc/hdl (6,2±1,9) y ldl/hdl (4,5±1,8). 60.7% category overweigh and obesity. 44.4% high risk according to hscrp. the hazard ratio (or), shows that the likelihood of women with normal nutritional status presented ldl-c values at risk was 0.485 (ci 95%: 0.230-0.999), while those who were overweight/obesity was 1.547 (ci 95%: 1.025-2.335). there was a significantly positive correlation between crp and tc/hdl (r=0.418; p=0.001). conclusions: postmenopausal women presented a high prevalence of overweight/obesity, atherogenic lipid profile and crp in risk for cvd.
Proteína C reactiva, su relación con el estado nutricional y perfil lipídico en mujeres posmenopáusicas
Yubire Barrios,Lesbia Meertens,Alba Salim de Moron,Nayka Díaz
Revista Venezolana de Endocrinología y Metabolismo , 2011,
Abstract: 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 a os. 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% de las mujeres presentaron sobrepeso/obesidad. Según PCRus 44,4% en alto riesgo. La relación de riesgo (OR), muestra que la probabilidad de que las mujeres con estado nutricional normal presenten valores del c-LDL en riesgo fue de 0,485 (CI 95%: 0,230-0,999), mientras que en aquellas con sobrepeso/obesidad fue de 1,547 (CI 95%: 1,025-2,335). Se obtuvo correlación entre PCR y CT/HDL (r=0,418; p=0,001). Conclusión: Las mujeres posmenopáusicas evaluadas presentaron alta frecuencia de sobrepeso/obesidad, perfil lipídico aterogénico y PCR en situación de riesgo para ECV. Objective: In postmenopausal women increases the risk of cardiovascular disease (CVD) associated with an atherogenic lipid profile and elevated circulating levels of high-sensitivity C-reactive protein (hsCRP), considered important predictor proinflamatario marker for these diseases. The main purpose of this study was to evaluate the results of hsCRP and their relationship with nutritional state according to index of mass coporal (BMI) and lipid profile in postmenopausal women venezuelans Methods: 61 women were selected, healthy, residing in the municipality Naguanagua, aged between 45 and 60, apparently healthy. Nutritional status was classified according to BMI (WHO). We assessed hsCRP, lipid profile and estradiol. Results: Mean values of biochemical parameters were: hsCRP (3,16±2,0mg/L), total cholesterol (249±58mg/dL), HDL (42 ± 10mg/dL), LDL (176±55mg/dL), triglycerides (151±70mg/dL) and atherogenic index TC/HDL (6,2±1,9) y LDL/HDL (4,5±1,8). 60.7% category overweigh and obesity. 44.4% high risk according to hsCRP. The hazard ratio (OR), shows that the likelih
Homocisteína, acido fólico y vitamina B12 en adultos mayores venezolanos
Meertens G,Lesbia; Díaz W,Nayka; Solano R,Liseti; Baron,Maria Adela; Rodríguez M,Adelmo;
Archivos Latinoamericanos de Nutrición , 2007,
Abstract: serum homocysteine, folate and vitamin b12 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 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 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 b12 and folate that is expressed as elevated homocysteine levels. these finding represent a high cardiovascular risk factor for this elderly group.
ESTADO NUTRICIONAL, INDICADORES ANTROPOMéTRICOS Y HOMOCISTEíNA SéRICA EN MUJERES POSMENOPáUSICAS VENEZOLANAS
Meertens,Lesbia; Díaz,Nayka; Fraile,Carlos; Riera,Melissa; Rodríguez,Adelmo; Rodríguez,Luis; Solano,Liseti;
Revista chilena de nutrición , 2011, DOI: 10.4067/S0717-75182011000300003
Abstract: menopause is associated with an increased body weight and changes in fat distribution, high levels of homocysteine and cardiovascular risk factors associated with estrogen deficiency. the objective was to evaluate body mass index (bmi), waist circumference (wc), waist/hip index (whi), and serum homocysteine (hct) levels in postmenopausal women (n 128). nutritional status was diagnosed by bmi (who), wc (normal <88cm, at risk> 88cm), whi (normal <0.8, at risk> 0.8), serum homocysteine (hct) (elisa) normal < 10 mmol/l, at risk >10-15mmol/l, high >15mmol/l and estradiol (elisa) <65pg/ml (menopause). sixty five point nine % were overweight/obese, 47.3% and 82.2% showed cardio metabolic risk by wc and whi. there was a significant difference for whi, and a positive significant correlation between anthropometrics indexes. ten % showed risk and hyperhomocysteinaemia, but it was not correlated with the evaluated variables. the subjects had a high frequency of overweight, obesity and android fat distribution, showing a high risk for cardiometabolics diseases.
Seroprevalencia y factores de riesgo de cisticercosis en trabajadores de granjas porcinas y criadores de cerdos artesanales del municipio Mara, estado Zulia, Venezuela
Villalobos-Perozo,Rafael; Cheng,Rosita; Díaz,Odelis; Estévez,Jesús; Beauchamp,Sharline; Cava,José; Nacaid,Alfonso; Soto,Gustavo; Castellano,Carlina; Pérez,Lesbia;
Kasmera , 2007,
Abstract: objectives: to determine the seroprevalence and the risk factors for cysticercosis in pig farm workers and traditional pig breeders living in the municipality of mara in the state of zulia. methodology: serum samples were studied from 59 individuals of both sexes (33 masculine and 26 feminine), with ages ranging from 1 to 60 years old, including 18 pig farm workers and 41 traditional pig breeders and their relatives, to determine igg anticysticercus antibodies by means of the elisa method, using taenia crassiceps antigens, as well as an epidemiological survey. results: the general seroprevalence was 15.25%. the group at greater risk was more than 40 years old. the consumption of crude or undercooked pig meat and performing activities related to pigs for prolonged periods were important risk factors. discussion: the seroprevalence found in this population was high when compared with other papers that studied this type of population. the affected age group (40 years old) and the consumption of crude or undercooked pig meat agreed with the results obtained in other studies made in venezuela and other countries. performing frequent activities related to pigs was also was shown to be a risk factor. with a linear multiple regression model, it was demonstrated that the concurrence of these three factors increases the risk of positive serology. conclusions: the high prevalence demonstrated in this population when compared with other populations previously studied suggests performing an epidemiological surveillance for cysticercosis.
Page 1 /191697
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.