A resposta da 17-hidroxiprogesterona (17OHP) ao estímulo agudo com um análogo do hormônio liberador de gonadotrofinas (GnRHa) e sua relação com a sensibilidade à insulina (SI) foi avaliada em 8 mulheres voluntárias normais e obesas (grupo N), com idades entre 24 e 40 anos (mediana de 29) e índice de massa corpóreo (IMC) entre 32,0 e 46,5kg/m 2 (mediana de 35,7) e 8 pacientes portadoras da síndrome dos ovários policísticos (grupo SOP) com idades entre 19 e 28 anos (mediana de 26) e IMC entre 30,1 e 40,1kg/m 2 (mediana de 35,8), submetidas a estímulo agudo com acetato de leuprolide, 10µg/kg SC e a teste de tolerância oral à glicose (TTOG). Observou-se aumento significativo da concentração de 17OHP, tanto no grupo N (1,5 vs. 2,9ng/mL; p= 0,023) quanto no grupo SOP (0,8 vs. 3,1ng/mL; p= 0,007), não havendo diferença significativa entre os grupos. A SI foi avaliada através da área sob a curva de insulina (ASCI) no TTOG. O grupo N apresentou ASCI significativamente menor que o grupo SOP (14.384 vs. 22.800µUI/mL/min, p= 0,04). Não houve correlação entre a concentração de 17OHP após estí -mulo e a ASCI. The response of 17-hydroxyprogesterone (17OHP) to gonadotropinreleasing hormone analogue (GnRHa) acute stimulation and its relationship to insulin sensitivity (IS) were evaluated in 8 normal obese voluntary women (group N), aged 24 to 40 years (median 29) and body mass index (BMI) of 32.0 to 46.5kg/m 2 (median of 35.7), and 8 patients with polycystic ovary syndrome (group PCOS) aged 19 to 28 years (median of 26) and BMI of 30.1 to 40.1kg/m 2 (median of 35.8), submitted to an acute stimulation with leuprolide acetate 10µg/kg and to am oral glucose tolerance test. We observed a significant increase of 17OHP levels in group N (1.5 vs. 2.9ng/mL; p= 0.023) as well as in group PCOS (0.8 vs. 3.1ng/mL; p = 0.007), with no significant difference between both groups. The area under the curve of insulin (AUCI) was significantly less in the group N (14,384 vs. 22,800mUI/mL/min, p= 0,04). There was no correlation between 17OHP and the AUCI. (Arq Bras Endocrinol Metab 2003;47/1:55-61)
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