| AD | Alzheimer’s disease |
| HHCy | Hyperhomocysteinemia |
| Hcy | Homocysteine |
| SAH | S-adenosylhomocysteine |
| SAM | S-adenosylmethionine |
| cdk5 | cyclin-dependent kinase 5 |
| PP2A | protein phosphatase 2A |
| GSK3β | glycogen synthase kinase 3β |
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