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American Journal of Alzheimer's Disease and Other Dementias logoLink to American Journal of Alzheimer's Disease and Other Dementias
. 2007 Aug-Sep;22(4):319–328. doi: 10.1177/1533317507302447

Apoptotic Gene Expression in Alzheimer's Disease Hippocampal Tissue

Farrah D Sajan 1, Frank Martiniuk 2, David L Marcus 3, William H Frey II 4, Richard Hite 5, Elizabeth Z Bordayo 6, Michael L Freedman 7
PMCID: PMC10846078  PMID: 17712163

Abstract

Alzheimer's disease (AD) is the major cause of dementia, accounting for 50% to 70% of the late-onset patients, with 17 to 20 million affected. It is characterized by neurofibrillary tangles, neuronal loss, and amyloid plaques in tissues of the cortex, hippocampus, and amygdala. Apoptosis or programmed cell death appears in the progression of AD. In this study, we investigated the gene expression of 14 apoptotic genes (E2F1, p21/WAF, ICE-LAP3, Fas Antigen, CPP-32, GADD153, ICE-β, c-Fos, c-Jun, Bax-α, Bcl-2, Bcl-(x)L, BAK, and p53) in 5 normal and 6 AD human hippocampal tissues, using reverse transcription-polymerase chain reaction. Our results show an upregulation of gene expression in AD patients for c-Fos and BAK. ICE-β, c-Jun, Bax-α, Bcl-x(L), p53, and GADD153 were found to be upregulated in some AD samples but were not detected or downregulated in other AD or normal samples. No gene expression was found for E2F1 , p21/WAF, ICE-LAP3, Fas Antigen, CPP32, or Bcl-2. These results indicate significant increases in c-Fos , c-Jun, and Bak; therefore, we suggest that these genes may be critical in the apoptotic cascades of AD.

Keywords: Alzheimer's disease, apoptosis, apoptotic gene expression, reverse transcription-polymerase chain reaction, human hippocampus

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Contributor Information

Farrah D. Sajan, Division of Geriatrics New York University School of Medicne, New York NY.

Frank Martiniuk, Pulmonary Division New York University School of Medicine, New York, New York.

David L. Marcus, Division of Geriatrics New York University School of Medicne, New York NY, david.marcus@med.nyu.edu .

William H. Frey, II, Alzheimer's Disease Research Center, Health Partners Research Foundation at Regions Hospital St. Paul, Minnesota.

Richard Hite, Division of Geriatrics New York University School of Medicne, New York NY.

Elizabeth Z. Bordayo, Alzheimer's Disease Research Center, Health Partners Research Foundation at Regions Hospital St. Paul, Minnesota.

Michael L. Freedman, Division of Geriatrics New York University School of Medicne, New York NY.

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