To cereal scientists, gluten is the same as prolamin, but in some older terminology only the gliadin fraction is termed prolamin. Gliadin makes up about half of the gluten. The other half is often called glutenin, but it is very similar to the gliadin half in composition and structure and I suspect that it is toxic to a large extent. It would be simplest to say that gluten equals gliadin equals prolamin as far as toxicity is concerned.
Celiac.com's Founder and CEO, Scott was diagnosed with celiac disease in 1994, and, due to the nearly total lack of information available at that time, was forced to become an expert on the disease in order to recover. Scott launched the site that later became Celiac.com in 1995 "To help as many people as possible with celiac disease get diagnosed so they can begin to live happy, healthy gluten-free lives." In 1998 he founded The Gluten-Free Mall which he sold in 2014. He is co-author of the book Cereal Killers, and founder and publisher of Journal of Gluten Sensitivity.