SciELO - Scientific Electronic Library Online

 
vol.132 número10Curva nacional de distribución de peso al nacer según edad gestacional: Chile, 1993 a 2000Resistencia a gentamicina, amikacina y ciprofloxacina en cepas hospitalarias de Klebsiella pneumoniae subespecie pneumoniae productoras de ß-lactamasas de espectro extendido índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Revista médica de Chile

versión impresa ISSN 0034-9887

Resumen

DE LA MAZA C, M Pía et al. Weight maintenance in humans: Could it mimic calorie restriction of animal models?. Rev. méd. Chile [online]. 2004, vol.132, n.10, pp.1155-1172. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872004001000002.

Background: Energy restriction (ER) extends life span in animals, by decreasing oxidative stress. Aim: To compare adiposity, metabolic variables and DNA oxidative damage, among adults, reporting a constant body weight (weight maintainers), versus those reporting a progressive increase (weight gainers). Subjects and Methods: Clinical history, dietary recall, anthropometric measures, abdominal CT scan and fasting blood samples (to measure lipoproteins, glucose and insulin), were obtained in 44 males. These subjects were classified as weight maintainers if they had a change in weight of 3 kg or less in the last 10 years, or weight gainers, if they had a weight increment of more than 6 kg in the same lapse. Oxidative damage was assessed by 8-hydroxydeoxyguanosine (8-OHdG), in DNA extracted from circulating lymphocytes, in 5 weight maintainers, 8 weight gainers and 5 healthy elders. Results: Energy intake was 18% higher in weight gainers (p <0.01). Adiposity and central fat were higher among weight gainers (p <0.01). Abdominal fat correlated with serum lipoproteins, glucose and insulin sensitivity, assessed by the Homeostasis Model Assessment (HOMA). 8-OHdG levels did not differ between groups. Conclusions: The analysis of weight change based on the clinical history correlates with actual body composition, thus it may be a reliable indicator of long term energy intake. This method could be comparable to weight clamp models employed in animals to study aging (Rev Méd Chile 2004; 132: 1166-72)

Palabras clave : Body weight; Energy intake; Oxidative stress.

        · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons