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1.
Nutrire Rev. Soc. Bras. Aliment. Nutr ; 40(2): 153-161, 2015. tab
Article in Portuguese | LILACS | ID: biblio-881940

ABSTRACT

OBJECTIVE: This study aimed to evaluate the effects of using different types of isolated sweeteners in nutritional and biochemical parameters of rats. METHODS: We used 36 adult male rats, maintained on diet for 42 days and divided into six groups: Group C - Control, Group AS - Aspartame; Group ES - Stevia; Group SU - Sucralose; Group CI - Cyclamate; group SA - Saccharin. The animals were fed a standard AIN 93M with replacement of sucrose by its sweetener and water ad libitum. The animals were kept in metabolic cages in a controlled environment and were recorded body weight, food and water consumption, urinary and fecal excretion. At the end of the study the animals were anaesthetized intraperitoneally with a combination of ketamine, hydrochloride xylazine and acepromazine and euthanized by cardiac puncture. Theserum was used to determine glucose, lipid, liver and kidney profiles. RESULTS: Animals receiving sweeteners had lower food intake compared to Group C, highlighting the SA Group. The results indicated that the sweeteners used in this study and the maximum proportion suggested by ANVISA, particularly saccharin, stevia, sucralose and cyclamate, decreased the animals food intake. Sweeteners did not influence the other study variables. CONCLUSIONS: The sweeteners reduced food intake, but no change was noticed in the animal's final weight gain and other variables. We suggest additional long term research


OBJETIVO: Avaliar os efeitos do uso de diferentes tipos de adoçantes isolados nos parâmetros nutricionais e bioquímicos de ratos. MÉTODOS: Foram utilizados 36 ratos machos, Wistar, adultos, mantidos sob dieta durante 42 dias e distribuídos em seis Grupos: Grupo C ­ Controle; Grupo AS ­ Aspartame; Grupo ES ­ Estévia; Grupo SU ­ Sucralose; Grupo CI ­ Ciclamato; Grupo SA ­ Sacarina. Os animais receberam dieta padrão AIN 93M com substituição da sacarose pelo respectivo adoçante e amido, com água ad libitum. Os animais foram mantidos em ambiente controlado e foram registrados peso corporal, consumo alimentar e hídrico, excreção urinária e fecal. Os animais foram anestesiados via intraperitoneal, com Cloridrato de Cetamina, Cloridrato de Xilazina e Acepromazina. A eutanásia foi realizada por punção cardíaca. O soro foi utilizado para determinar perfil glicídico, lipídico, hepático e renal. RESULTADOS: Os animais que receberam adoçante apresentara menor consumo alimentar em relação ao Grupo C, destacando-se o Grupo SA. Os resultados indicaram que os adoçantes utilizados no presente estudo e na proporção máxima sugerida pela ANVISA, principalmente sacarina, estévia, sucralose e ciclamato, diminuíram o consumo alimentar dos animais. Os adoçantes não influenciaram as demais variáveis do estudo. CONCLUSÕES: Os adoçantes reduziram o consumo alimentar, porém sem alteração no ganho de peso final dos animais e nas demais variáveis estudadas. Sugere-se a realização de pesquisas adicionais em longo prazo


Subject(s)
Animals , Rats , Biomarkers/analysis , Sweetening Agents/administration & dosage , Sweetening Agents/analysis , Sweetening Agents/toxicity
3.
Int. j. morphol ; 25(3): 549-554, Sept. 2007. tab
Article in English | LILACS | ID: lil-626901

ABSTRACT

Aspartame is a synthetic sweetener consumed by more than half the adult population in 75 countries. Their metabolites can be toxic, principally to the liver and retina, and there are few studies on the use of aspartame in gestation. Twenty pregnant rats were weighed and allocated randomly (n=5 per group) to receive 14 mg/kg aspartame or water by oral-gastric drip. Treated Tl: aspartame diluted in water at room temperature; Treated T2: aspartame diluted in water heated to 40° C; control Cl: water at room temperature; and control C2: water heated to 40° C. Placentas were weighed, umbilical cords measured and 1000 nuclei of fetal hepatocytes (250 from each group) were analyzed morphometrically utilizing the technique of kariometry, with application of the Mann-Whitney U-Test. There were reductions in mean placental and maternal-fetal weights, in umbilical-cord length, and the majority of kariometric parameters of the hepatocytes in the group treated with aspartame diluted in distilled water at room temperature. Reduction of placental and maternal-fetal weights occurred, shortening of the umbilical cord, and decrease in kariometric parameters in fetal hepatocyte nuclei after administration of aspartame diluted in distilled water at 40°C temperature. The use of aspartame during gestation can be prejudicial to the fetus.


El aspartame es un endulzante sintético consumido por más de la mitad de la población adulta, en 75 países. Sus metabolitos pueden ser tóxicos, principalmente en el hígado y retina y hay algunos estudios sobre el aspartame en el embarazo. Veinte ratas preñadas fueron pesadas y distribuidas aleatoriamente (n=5 por grupo) y recibieron 14 mg/Kg de aspartame o agua por vía oral- gástrica. Tratamiento 1: aspartame diluido en agua a temperatura ambiente; Tratamiento T2: aspartame diluido en agua tibia a 40 °C; control Cl: agua a temperatura ambiente, y control C2: agua tibia a 40° C. Las placentas fueron pesadas, el cordón umbilical medido y 1000 núcleos de hepatocitos fetales (250 de cada grupo) se analizaron morfométricamente utilizando la técnica de canometría con aplicación del Test U de Mann-Whitney U-Test. En el grupo tratado con aspartame diluido en agua a temperatura ambiente, hubo reducción en los pesos promedios de la placenta y materno-fetal, largo del cordón umbilical y en la mayoría de los parámetros cartométricos de los hepatocitos. Lo mismo ocurrió en el grupo tratado con aspartame diluido en agua a 40 °C. El uso del aspartame durante las gestación puede ser perjudicial para el feto.


Subject(s)
Animals , Female , Pregnancy , Rats , Aspartame/toxicity , Body Weight/drug effects , Liver/drug effects , Placenta/drug effects , Placenta/pathology , Sweetening Agents/toxicity , Umbilical Cord/drug effects , Umbilical Cord/pathology , Rats, Wistar , Fetal Weight/drug effects , Karyometry , Liver/pathology
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