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| Content Provider | PubMed Central |
|---|---|
| Author | Bard, Frédérique Barbour, Robin Cannon, Catherine Carretto, Robert Fox, Michael Games, Dora Guido, Teresa Kathleen, Hoenow Hu, Kang Kelly, Johnson-wood Khan, Karen Kholodenko, Dora Lee, Celeste Lee, Mike Motter, Ruth Nguyen, Minh Reed, Amanda Schenk, Dale Tang, Pearl Vasquez, Nicki Seubert, Peter Yednock, Ted |
| Copyright Year | 2003 |
| Abstract | Transgenic PDAPP mice, which express a disease-linked isoform of the human amyloid precursor protein, exhibit CNS pathology that is similar to Alzheimer's disease. In an age-dependent fashion, the mice develop plaques containing β-amyloid peptide (Aβ) and exhibit neuronal dystrophy and synaptic loss. It has been shown in previous studies that pathology can be prevented and even reversed by immunization of the mice with the Aβ peptide. Similar protection could be achieved by passive administration of some but not all monoclonal antibodies against Aβ. In the current studies we sought to define the optimal antibody response for reducing neuropathology. Immune sera with reactivity against different Aβ epitopes and monoclonal antibodies with different isotypes were examined for efficacy both ex vivo and in vivo. The studies showed that: (i) of the purified or elicited antibodies tested, only antibodies against the N-terminal regions of Aβ were able to invoke plaque clearance; (ii) plaque binding correlated with a clearance response and neuronal protection, whereas the ability of antibodies to capture soluble Aβ was not necessarily correlated with efficacy; (iii) the isotype of the antibody dramatically influenced the degree of plaque clearance and neuronal protection; (iv) high affinity of the antibody for Fc receptors on microglial cells seemed more important than high affinity for Aβ itself; and (v) complement activation was not required for plaque clearance. These results indicate that antibody Fc-mediated plaque clearance is a highly efficient and effective process for protection against neuropathology in an animal model of Alzheimer's disease. |
| Related Links | http://dx.doi.org/10.1073/pnas.0436286100 |
| Starting Page | 2023 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 4 |
| Volume Number | 100 |
| Language | English |
| Publisher | The National Academy of Sciences |
| Publisher Date | 2003-02-18 |
| Access Restriction | Open |
| Rights Holder | The National Academy of Sciences |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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