by Bob Yirka, Medical Xpress Haplotypes associated with PD result in increased expression of GPNMB, encoding GPNMB. GPNMB interacts with aSyn, with effects on aSyn expression at the synapse, cellular uptake of fibrillar aSyn, and development of aSyn pathology in neurons. Together, these cellular processes mediate risk for development and progression of PD. Created with...