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2009, Number 1

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Bioquimia 2009; 34 (1)

Characterization by gender of: anthropometric indexes, biochemical parameters of lipid and carbohydrate metabolism during three phases of the puberty in rural and urban area from San Luis Potosí, SLP México

Vázquez-Vidal I, Aradillas-García C, De la Cruz-Mendoza E, Vargas-Morales JM, Metlich-Medlich BA, Dávila-Esqueda ME

Language: Spanish
References: 36
Page: 5-12
PDF size: 99.20 Kb.


ABSTRACT

Introduction: Puberty is recognized as a dynamic phase of changes and it is the developmental process of sexual maturity that leads to fertility. These changes are significantly influenced by geographic location and climate, as well as by gender. Objective: To evaluate children, according to gender, from both rural and urban areas of Mexico. The following were studied: anthropometric indexes and biochemical parameters of lipid and carbohydrate metabolism during three phases of puberty. Methods: We studied 261 healthy children aged between 6 and 13 years from two areas: rural (79 subjects) and urban (182 subjects). Pubertal development was assessed by physical examination according to the criteria of Tanner. Children were weighed and their height was measured. According to these data, we calculated anthropometric indexes. Blood pressure was registered and we measured different components of lipid and carbohydrate metabolism (glucose, insulin, cholesterol, HDL-cholesterol, LDL-cholesterol, and triglycerides). Results: Geographical location, as well as gender, determined onset of sexual maturity. Changes in sexual maturity were shown at an earlier age in urban children. Weight gain and increases in height and body mass index were also demonstrated. Moreover, children from urban areas showed higher plasma glucose and insulin concentrations than children from rural areas. These children also showed a higher degree of insulin resistance at the onset of maturity (Tanner I). At this time, changes in lipid metabolism also occurred. Finally, females from urban areas showed earlier sexual maturation than their male counterparts. Conclusions: We observed a sexual dimorphism in pubertal development that was influenced by geographical location of the subject, according to an urban or rural area.


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