21，Hardie L, Trayhurn P, Abramovich D, et al. Circulating leptin in women :a longitudinal study in the menstrual cycle and during pregnancy. Clin Endocri nol (Oxf), 1997, 47:101-106.
32，Mazuzaki H, Ogawa Y, Sagawa N, et al. Non-adipose tissue production o f leptin:leptin as a novel plaenta-derved hormone in humnas. Nat Med, 1997, 3:1 029-1033.
43，Tamura T, Goldenberg RL, Johnston KE, et al. Serum leptin concentratio ns during pregnancy and their relationship to fetal growth. Obstet Gynecol, 1998 , 91:389-395.
54，Mise H, Sagawa N, Matsumoto T, et al. Augmented placental production o f leptin in preeclampsia:possible involvement of placental hypoxia. J Clin Endoc rinol Metab, 1998, 83:3225-3229.
65，Highman TJ, Friedman JE, Huston LP, et al. Longitudinal changes in maternal seru m leptin concentrations, body composition, and resting metabolic rate in pregnan cy. Am J Obstet Gynecol, 1998, 178:1010-1015.
76，Schubring C, Kiess W, Englaro P, et al. Levels of leptin in maternal s erum, amniotic fluid, and arterial and venous cord blood:relation to neonatal an d placental weight. J Clin Endocrinol Metab, 1997, 82:1480-1483.
87，Lopez-Soriano J, Carbo N, Lopez-Soriano FJ, et al. Leptin levels and gene expression during the perinatal phase in the rat. Eur J Obstet Gynecol Rep rod Biol. 1998, 81:95-100.
