ANN ARBOR, MI--(MARKET WIRE)--Jul 16, 2007 -- Pipex Pharmaceuticals, Inc. (AMEX:PP - News), a specialty pharmaceutical company developing innovative late-stage drug candidates for the treatment of neurologic and fibrotic diseases, announced today that it has initiated patient dosing of TRIMESTA (oral estriol), its proprietary therapy for multiple sclerosis (MS), in a multi-center Phase II/III clinical trial for the treatment of women with relapsing-remitting MS. This clinical trial has received a $5 million grant from the National Multiple Sclerosis Society (NMSS) in partnership with the National MS Society's Southern California chapter, with support from the National Institutes of Health (NIH).