Santiago Muzzo

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Iodine deficiency has been a public health problem in most Latin American countries. Massive programs of salt iodization have achieved great progress toward its elimination but no consistent monitoring has been applied. We used the ThyroMobil model to visit 163 sites in 13 countries and assess randomly selected schoolchildren of both genders 6-12 years of(More)
This study was conducted to evaluate the effects of single and combined deficiencies of Se, Zn and I on thyroid function in rats. Rats were fed amino acid-based diets for 6 wk starting from weaning. The diets contained either low or adequate amounts of these minerals. In addition to the control and control pair-fed groups, seven experimental groups were(More)
OBJECTIVE We studied the prevalence of weight excess and short stature among school-age children in Chile over the past decade. METHODS We designed a descriptive cross-sectional, school-based study to analyze nutritional and stature trends in prepubertal and pubertal boys and girls from 1986 to 1998. RESULTS Between 1986 and 1998, we detected(More)
UNLABELLED The presence of Y chromosome fragments in patients with Turner's syndrome is known to increase the risk of gonadoblastoma and virilization. Y chromosome material is detected in up to 6% of patients with Turner's syndrome by karyotype. By DNA analysis, Y chromosome sequences have been reported in 0-60% of patients. The putative gonadoblastoma gene(More)
Early postnatal malnutrition produces delay in growth and developmental processes, and children from a low socioeconomical level where undernutrition is prevalent are shorter than those from higher socioeconomic levels. We examined the effects of severe and early protein energy malnutrition on growth and bone maturation. We studied 40 preschool children who(More)
BACKGROUND Body mass index (BMI) is the recommended parameter to assess the nutritional status of subjects aged less than 20 years. However, during puberty the correlation between BMI and fat mass decreases notably. Therefore, the use of BMI for the diagnosis of obesity during puberty may be misleading. AIM To evaluate the variations of the BMI during(More)
BACKGROUND Early onset of menarche has been linked to prevalence of obesity; however, this may differ for indigenous females. OBJECTIVE To analyse the relationship between age of menarche and nutritional status among indigenous and non-indigenous girls. METHOD The design of this study was cross-sectional. Date of menarche was determined through(More)
The effect of nutrition on infant bone age was studied. Bone age was examined in children with different degrees of malnutrition using wrist X-Rays and comparing them with Greulich and Pyle Atlas. There were no differences in the socioeconomic level of the different groups. In obese children bone age was advanced, while in under-nourished, it was retarded.(More)
The objective of this study was to compare the sociocultural characteristics of pregnant adolescents of low SES with a nonpregnant adolescent group from the same area of Santiago, Chile. The sample was composed of 229 adolescents, 129 of whom were pregnant for the first time (group A), and 100 who were not pregnant (group B). Each pregnant girl was matched(More)