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Telomeres and the Remarkable Telomerase Enzyme

Telomeres — which are the DNA repeats that form the tips of chromosomes and are produced by the telomerase enzyme — play a crucial, and curious, role in the life of the cell.

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Memories may be formed throughout the day, not just while sleeping

Scientists have long thought that processes occurring during sleep were responsible for cementing the salient experiences of the day into long-term memories. Now, however, a study of scampering rats suggests that the mechanisms at work during sleep are also active while the animals are awake -- and that they encode events more accurately.

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Sleep apnea linked to cognitive impairment in older women

Older women with sleep-disordered breathing (SDB) –– the restriction or interruption of breathing during sleep –– are more likely to show cognitive impairment than women without SDB, according to a study led by researchers at the San Francisco VA Medical Center and UC San Francisco.

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Poor sleep associated with cognitive decline in elderly women

Women who experienced cognitive decline over a 13 to 15 year period after age 65 were more likely to sleep poorly than women whose cognition did not decline, according to a study led by researchers at the San Francisco VA Medical Center (SFVAMC).

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