Abstract: The invention relates to a method for the diagnosis or prediagnosis of a ?-amyloidopathy or an ?-synucleopathy accompanied by a cerebral protein deposit and a reduced activity of the cerebral ABCC1-transporter, or for determining the risk of a proband suffering from such an illness, the proband already having accumulated substances transported by the cerebral ABCC1 transporter.
Abstract: The invention relates to 2-(R2-thio)-10-[3-(4-R1-piperazin-1-yl)propyl]-10H-phenothiazine according to general formula I, for treating a ?-amyloidopathy or an ?-synucleinopathy accompanied by a cerebral protein deposit and a reduced activity of the cerebral ABCC1-transporter. The invention also relates to a method for the diagnosis or prediagnosis of a ?-amyloidopathy or an ?-synucleopathy accompanied by a cerebral protein deposit and a reduced activity of the cerebral ABCC1-transporter, or for determining the risk of a proband suffering from such an illness, the proband already having accumulated substances transported by the cerebral ABCC1 transporter.