RESUMOAtualmente, é grande o impacto psicossocial da baixa estatura nas crianças e adolescentes com insuficiência renal crônica (IRC), sendo o hormônio de crescimento recombinante humano (rhGH) uma alternativa terapêutica. Avaliamos o crescimento e a composição corporal (CC) em 11 crianças pré-púberes (9M/2F; 3,5-12,8a) com IRC e baixa estatura e/ou baixa velocidade de crescimento, tratadas com rhGH (0,7-1,0UI/Kg/semana) por 18 meses. Avaliamos antropometria e CC por impedância bioelétrica tetrapolar antes e 6, 12 e 18 meses após o início do rhGH; maturação esquelética e função renal foram avaliadas antes e após 6 e 12 meses. Houve aumento significativo do peso, da altura, da VC e da massa magra (MM), com diminuição significativa da massa gorda (MG) no período de 0 a 6 meses de tratamento. Entre 0 e 12 meses houve apenas aumento significativo da altura. Entre 6 e 12 meses houve inversão da CC, com diminuição significativa da MM e aumento da MG. Entre 12 e 18 meses houve restabelecimento da CC inicial, com diminuição significativa da MG e aumento da MM. Não se observaram alterações na função renal, nem avanço exagerado da maturação esquelética. Em conclusão, o rhGH em doses de reposição por 18 meses promoveu melhora do crescimento com mudança da CC neste grupo de crianças com IRC, especialmente nos primeiros 12 meses de tratamento, sem efeitos colaterais. At present, the impairment of linear growth remains one of the major obstacles to successful social adaptation of children and adolescents with chronic renal insufficiency (CRI), being the recombinant human growth hormone (rhGH) a therapeutic option. We evaluated growth and body composition (BC) in 11 prepubertal patients (9M/2F; 3.5-12.8y) with CRI and short stature and/or slow growth velocity treated with rhGh (0.7-1.0IU/Kg/week) for 18 months. Anthropometry and BC, examined by a tetrapolar bioeletrical impedance, were evaluated before, 6, 12 and 18 months after rhGH treatment; biochemical examinations and bone age were assessed before, and after 6 and 12 months. Six months after the onset of rhGH, there was a significant increment of weight, height, growth velocity and lean mass, with a significant decrease of fat mass; 12 months after, there was only a significant increment of height. Between 6 and 12 months, an inversion of BC was observed, with significant increment of fat mass and decrease of lean mass. Between 12 and 18 months, BC recovered, with a significant increment of lean mass and correspondent decrease of fat mass. The residual renal function was preserved, as well as the normal increment of bone age. In conclusion, rhGH administration for 18 months to children with CRI improved growth significantly and changed the BC, particularly in the first 12 months, with no side effects. (Arq Bras Endocrinol Metab 2002;46/6:661-667) artigo original
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