Cortice Biosciences announced today results from placebo-controlled, double-blinded Phase 1 studies evaluating TPI 287, a brain penetrable microtubule stabilizing agent, for the treatment of Alzheimer’s disease, progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS).
Degeneration of neurons associated with wakefulness, and not a lack of sleep, makes Alzheimer's patients more drowsy. The degeneration of these neurons is caused by the tau protein. In PSP, the damage to the neurons was associated with symptoms of sleep deprivation.
People who later developed Alzheimer's disease scored poorly on memory and logic-based tests, as well as reaction times and grip tests. They were also more likely to have experienced a fall within the past 12 months. Those who developed PSP were twice as likely to experience a fall.
Researchers have identified a layer of genetic material involved in controlling the production of tau in the brain. The material is part of a larger family of non-coding genes that regulate and control other brain proteins associated with neurodegenerative disorders, such as Alzheimer's disease, Parkinson's, and PSP. The findings could lead to the development of new therapeutics to treat a range of neurodegenerative disorders.
Alpha2-NKA, a protein that drives toxicity in astrocytes, was discovered in higher levels of brain samples from people who died of PSP, Alzheimer's and other tau-related neurodegenerative disorders. Treatment with an FDA-approved drug called digoxin may suppress the inflamed astrocytes and halt disease progression for those with tauopathy disorders.