Hi John,
Thanks, the angiogenesis stuff is indeed very interesting. Mom saw her wonderful neuro today (she finally found a good one!) and he does think she has "regular" PD only and is probably under-medicated. We are happy to have a plan of action -- she will begin titrating up slowly, working toward doubling her dose and we'll see what happens.
Thanks again for your input. I will report back after some time passes!