| http://www.w3.org/ns/prov#value | - Our study suggests that intervention using NO donors or drugs enhancing cGMP levels may ameliorate cognitive deficits in patients affected by AD and other neurodegenerative diseases characterized by abnormal production of ??-amyloid42.The PDE5 (phosphodiesterase 5) inhibitor sildenafil (popularly known as Viagra) enhances phosphorylation of CREB through elevation of cGMP levels.
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