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ABSTRACT<br />

2007<br />

EVALUATION OF INSULIN RESISTANCE IN TURNER SYNDROME<br />

RELATED TO BIRTH WEIGHT<br />

ANDRESSA DOELINGER RAMOS<br />

ORIENTADORA: PROF a . DR a . MARÍLIA MARTINS GUIMARÃES<br />

“Abstract” <strong>da</strong> Dissertação <strong>de</strong> Mestrado submeti<strong>da</strong> ao Programa <strong>de</strong> Pós-<br />

Graduação em Medici<strong>na</strong>, área <strong>de</strong> concentração em Medici<strong>na</strong>, <strong>da</strong> Universi<strong>da</strong><strong>de</strong> Fe<strong>de</strong>ral do<br />

Rio <strong>de</strong> Janeiro, como parte dos requisitos necessários à obtenção do título <strong>de</strong> Mestre em<br />

Medici<strong>na</strong> (Endocrinologia).<br />

Introduction: Children with low birthweight (LBW; < 2.5 Kg) can be programmed intrauterus<br />

to <strong>de</strong>velop insulin resistance (IR) in adulthood. Turner syndrome (TS) courses with<br />

increased inci<strong>de</strong>nce of LBW and IR.<br />

Aim: To evaluate if TS patients with LBW are more insulin resistant than those with<br />

normal birthweight (NBW).<br />

Patients and Methods: TS patients confirmed by karyotype were grouped by birthweight,<br />

karyotype, pubertal status, treatment with GH and with estrogen+medroxiprogesterone<br />

acetate (MPA). Antropometric <strong>da</strong>ta, fasting glycemia and insulinemia, HOMA-IR, HOMAbeta<br />

and QUICKI were evaluated. These variables were compared in the groups.<br />

Results: Forty-eight TS patients were selected, mean age 19±8.9 years. Fourteen had<br />

LBW, 50% had a 45,X karyotype, 20,8% 45,X/46,XX and 29,2% others. Fifteen patients<br />

were pre-pubertal, 4 pubertal and 29 adult sexual pattern. Glycemia (p=0,28), insulinemia<br />

(p=0,8), HOMA-IR (p=0,91), HOMA-beta (P=0,16) and QUICKI (p=0,91) did not differ<br />

between LBW and NBW patients. These variables did not differ between groups of<br />

karyotype. Insulin and HOMA-beta values were higher (p=0,009 and p=0,0002,<br />

respectively) and fasting glycemia values were lower (p=0,0003) in adult than in prepubertal<br />

patients. There was no difference between GH users and non users. Twenty-two<br />

patients were estrogen+MPA users and their insulin, HOMA-IR and QUICKI means were<br />

6,5±3,4µU/mL, 1,1±0,7 e 0,39±0,04, respectively. BMI, waist, hip and waist/hip ratio did<br />

not differ in none of the groups.<br />

Conclusion: TS patients with LBW did not exhibit higher <strong>de</strong>grees of IR than those with<br />

normal birthweight.<br />

Key-words: Turner syndrome, insulin resistance, low birthweight.<br />

Rio <strong>de</strong> Janeiro<br />

8<br />

8

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