Dr. Marcelo Freitas Montenegro is a Researcher at the Department of Molecular Biosciences, the Wenner-Gren Institute, Stockholm University. He is also a pharmacologist who focuses on studying the cardiovascular system and finding better treatments for cardiovascular diseases. He has researched an alternative pathway for nitric oxide (NO) synthesis, known as Nitrate-Nitrite-Nitric oxide, and investigated how free radicals impact NO bioavailability in healthy and diseased conditions. Currently, he is researching the potential exploitation of alternative signaling pathways for adrenoreceptors to treat diabetes and hypertension at Stockholm University.