A broad range of severe pathologies such as pain, anxiety, neurodegeneration, hypertension, asthma, as well as some gastrointestinal diseases, are due to receptordysfunction. Some of these pathologies have a tremendous social impact as they involve large population segments, in particular aged people. The systems more frequently involved in these pathologies are adenosinic, adrenergic, aminoacidergic, cholinergic(muscarinic and nicotinic), dopaminergic, imidazoline, triptaminergic, and sigma receptors as well as Wnt pathway. The goals of the research reported in this book intended (i) to...