Development in diagnosis and treatment of Alzheimer’s disease

-The decrease in hippocampal neurogenesis can lead to development of Alzheimer disease (AD), yet various hypothesis suggest that AD patient have increased neurogenesis in the region 1 of hippocampus proper (CA1 region). Ammon‟s horn (the principle region of Alzheimer‟s pathology) has been found to be involved in neuronal loss however the exact nature of neurogenesis is unknown. Insulin like growth factor 1 (IGF-1 are associated with an increased risk of developing AD) stimulates neurogenesis to produce major change in hippocampal plasticity and seems to be involved in Alzheimer‟s pathology. Allopregnanolone, a neurosteroid, aids in continued neurogenesis in the brain. Levels of allopregnanolone in the brain decline in old age and Alzheimer‟s disease Allopregnanolone acts by reversing neurogenesis impairment thus preventing cognitive deficitis of AD disease in various mouse models. Ephirin signaling pathway has been shown to regulate neurogenesis in the hippocampus and have been studied as potential target to treat some symptoms of AD. Molecule associated with the pathology of AD, including Apo lipoprotein (ApoE), presenilin genesPSI,PS2 and APP have also been found to impact adult neurogenesis in the hippocampus. Detection and diagnosis of AD is done by variety of neuro-psychatic and imaging techniques. Psychological, behavioral, cognitive, holistic and humanistic therapy approaches are used for its treatment.