Ricci, Lee, Russell, Wang, Sullivan, Schneider, Brolin, Fried: "Isoproterenol decreases leptin release from rat and human adipose tissue through posttranscriptional mechanisms." in: American journal of physiology. Endocrinology and metabolism, Vol. 288, Issue 4, pp. E798-804, 2005 (PubMed).
Schubring, Prohaska, Prohaska, Englaro, Blum, Siebler, Kratzsch, Kiess: "Leptin concentrations in maternal serum and amniotic fluid during the second trimenon: differential relation to fetal gender and maternal morphometry." in: European journal of obstetrics, gynecology, and reproductive biology, Vol. 86, Issue 2, pp. 151-7, 1999 (PubMed).
Considine, Sinha, Heiman, Kriauciunas, Stephens, Nyce, Ohannesian, Marco, McKee, Bauer: "Serum immunoreactive-leptin concentrations in normal-weight and obese humans." in: The New England journal of medicine, Vol. 334, Issue 5, pp. 292-5, 1996 (PubMed).
Maffei, Halaas, Ravussin, Pratley, Lee, Zhang, Fei, Kim, Lallone, Ranganathan: "Leptin levels in human and rodent: measurement of plasma leptin and ob RNA in obese and weight-reduced subjects." in: Nature medicine, Vol. 1, Issue 11, pp. 1155-61, 1995 (PubMed).
Lönnqvist, Arner, Nordfors, Schalling: "Overexpression of the obese (ob) gene in adipose tissue of human obese subjects." in: Nature medicine, Vol. 1, Issue 9, pp. 950-3, 1995 (PubMed).