Ibáñez Lourdes, de Zegher Francis
Endocrinology Unit, Hospital Sant Joan de Déu (L.I), University of Barcelona, 08950 Esplugues, Barcelona, Spain.
J Clin Endocrinol Metab. 2004 Apr;89(4):1592-7. doi: 10.1210/jc.2003-031281.
Hyperinsulinemic hyperandrogenism with anovulation, the so-called polycystic ovary syndrome (PCOS), is the most frequent endocrine disorder of young women. One of the stigmata of PCOS is a deficit of lean mass and an excess of fat, in particular, abdominal fat, even in the absence of obesity. Adiponectin and IL-6 are among the adipocytokines that have recently been related to abdominal fat excess, insulin resistance states, and cardiovascular disease risk. We studied the effects of two new treatment options, ethinylestradiol-drospirenone and flutamide-metformin, and of their combination on adipocytokinemia and body adiposity in adolescents and women with PCOS. Adolescents with PCOS (n = 32; age, approximately 15 yr; body mass index, approximately 22 kg/m(2)) were randomly assigned to receive the oral contraceptive (OC) ethinylestradiol-drospirenone, or the low-dose generic duo of flutamide (62.5 mg/d) plus metformin (850 mg/d). Young women with PCOS (n = 22; age, approximately 19 yr; body mass index, approximately 22 kg/m(2)) were randomized to receive the same OC, either alone or with flutamide-metformin. Fasting blood glucose, serum insulin, lipids, androgens, IL-6, adiponectin, and body composition (by absorptiometry) were assessed at the start, and after 3 and/or 9 months. At the start, serum concentrations of the proinflammatory IL-6 were high, and those of the antiinflammatory adiponectin were low; body composition was adipose in each subpopulation. Abnormal adipocytokine levels, hypertriglyceridemia, and body adiposity diverged further from the norm in adolescents on OC; in contrast, girls on flutamide-metformin reverted all study indices toward normal, lost part of their fat excess, and reduced their lean mass deficit. In comparison to the girls on OC, those on flutamide-metformin lost a mean of approximately 4 kg of fat and gained approximately 4 kg of lean mass. Similarly, abnormal adipocytokine levels and adiposity were aggravated in women on OC alone and improved in women on OC plus flutamide-metformin; within 9 months, the latter subgroup lost a mean of approximately 3 kg of fat and gained approximately 3 kg of lean mass, in comparison to women on OC alone. In conclusion, young and nonobese PCOS patients were found to be in a low-grade, chronic inflammation state, and to have a body adiposity that evolves according to the balance of circulating adipocytokines and lipids, rather than to androgen excess or fasting hyperinsulinemia. Monotherapy with ethinylestradiol-drospirenone may not be a prime choice for PCOS, given its inefficacy to attenuate abnormal adipocytokine levels and body adiposity; ethinylestradiol-drospirenone plus flutamide-metformin, however, is a first OC combination that was found capable of reverting both the adipocytokine balance and the body composition toward normal, and that may therefore improve the long-term cardiovascular perspectives of women with PCOS.
伴有无排卵的高胰岛素血症性高雄激素血症,即所谓的多囊卵巢综合征(PCOS),是年轻女性中最常见的内分泌紊乱疾病。PCOS的特征之一是瘦体重不足和脂肪过多,尤其是腹部脂肪过多,即使在没有肥胖的情况下也是如此。脂联素和白细胞介素-6(IL-6)是最近与腹部脂肪过多、胰岛素抵抗状态和心血管疾病风险相关的脂肪细胞因子。我们研究了两种新的治疗方案,即炔雌醇-屈螺酮和氟他胺-二甲双胍,以及它们的联合使用对青少年和PCOS女性脂肪细胞因子血症和身体肥胖的影响。患有PCOS的青少年(n = 32;年龄约15岁;体重指数约22 kg/m²)被随机分配接受口服避孕药(OC)炔雌醇-屈螺酮,或低剂量通用组合氟他胺(62.5 mg/d)加二甲双胍(850 mg/d)。患有PCOS的年轻女性(n = 22;年龄约19岁;体重指数约22 kg/m²)被随机分配接受相同的OC,单独使用或与氟他胺-二甲双胍联合使用。在开始时、3个月和/或9个月后评估空腹血糖、血清胰岛素、血脂、雄激素、IL-6、脂联素和身体成分(通过吸收法)。开始时,促炎细胞因子IL-6的血清浓度较高,而抗炎脂联素的浓度较低;每个亚组的身体成分均以脂肪为主。服用OC的青少年中,异常的脂肪细胞因子水平、高甘油三酯血症和身体肥胖与正常水平的差异进一步加大;相比之下,服用氟他胺-二甲双胍的女孩所有研究指标均恢复正常,减少了部分多余脂肪,并减轻了瘦体重不足。与服用OC的女孩相比,服用氟他胺-二甲双胍的女孩平均减少了约4 kg脂肪,增加了约4 kg瘦体重。同样,单独服用OC的女性中异常的脂肪细胞因子水平和肥胖情况加重,而服用OC加氟他胺-二甲双胍的女性情况得到改善;在9个月内,与单独服用OC的女性相比,后一组平均减少了约3 kg脂肪,增加了约3 kg瘦体重。总之,发现年轻且非肥胖的PCOS患者处于低度慢性炎症状态,其身体肥胖情况根据循环脂肪细胞因子和血脂的平衡而变化,而非雄激素过多或空腹高胰岛素血症。鉴于炔雌醇-屈螺酮在减轻异常脂肪细胞因子水平和身体肥胖方面无效,它可能不是PCOS的首选单一疗法;然而,炔雌醇-屈螺酮加氟他胺-二甲双胍是第一种被发现能够使脂肪细胞因子平衡和身体成分恢复正常的OC组合,因此可能改善PCOS女性的长期心血管状况。