Estrogen, Memory, & Aging
Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Estrogen, Memory, & Aging: DNA methylation of the ERα promoter contributes to transcriptional differences in age across the hippocampus

Lara Ianov1,2, Ashok Kumar1, Thomas C. Foster1,2  1Department of Neuroscience, McKnight Brain Institute, 2Genetics and Genomics Program, Genetics Institute, University of Florida, Gainesville, FL 32611 Estradiol (E2) influences a number of processes that are important for maintaining healthy brain function, including memory. The ability of E2 to protect the brain …

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Epigenetics and PTSD
Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Connecting Epigenetics and Memory to PTSD

1 in 5.  That is the statistic for Iraq and Afghanistan war veterans that have been diagnosed with Post-Traumatic Stress Disorder (PTSD), according to the Department of Veteran Affairs. PTSD is a severe psychological condition that can develop after witnessing traumatic events, and its symptoms include disturbing flashbacks, anxiety, distress, …

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Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Does Loss of DNA Methylation and Hydroxymethylation in the Brain Lead to Loss of Memory?

5-methylcytosine (5-mC) and 5-hydroxymethycytosine (5-hmC) are two major epigenetic modifications of DNA.  Dynamic changes in 5-mC and 5-hmC levels are tightly regulated and impact neural cell development, differentiation, and other biological functions. Deregulation of 5-mC and 5-hmC has also been implicated in various human diseases. However, whether 5-mC and 5-hmC …

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Cognitive decline in the brain
Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Don’t forget about Dnmt’s

There is not a lot of knowledge about the enzymes that influence the molecular pathways underlying the normal aging process. A recent publication in Nature Neuroscience showed that the DNA methyltransferase Dnmt3a2 is critically involved in age-associated cognitive decline in mice. Oliveira et al.  found that up regulating Dnmt3a2 can …

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