L. Fernandez-Perez (May 5th, 1961) obtained his M.D. at Medical Faculty from the University of La Laguna (Spain) in 1985 and his Ph.D in Pharmacology in 1990 at same university. He currently is Professor of Pharmacology in Medicine and a Senior Scientist (Molecular Endocrinology Group) at the University of Las Palmas of Gran Canaria (Spain). He worked as Post-doctoral fellowship at Medical Nutrition Department (NOVUM) and Center for Molecular Medicine from Karolinska institute (Sweden). His research is focused in the understanding of the molecular mechanisms participating in the regulation hormone actions. He has been particularly involved in the elucidation of negative regulatory pathways (SOCS) that control Growth Hormone signaling. His name is also connected with studies in the field of steroids, in particular to the identification of novel membrane receptors for androgenic-anabolic esteroids (stanozolol) and glucocorticoids. He is reviewer for International Journals with impact factor mainly in the fields of Experimental Pharmacology and Endocrinology.