Dena Dubal

@denadubal.bsky.social

Neuroscientist, Neurologist, and Aging Researcher at UCSF

Five years ago Sam Dubal ascended - into the arms of the Mother Mountain. So blessed to have been the sister of this surgeon-anthropologist with a gentle heart and fierce mind. He was shifting paradigms toward a better world - with that unassuming smile.

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Could a reawakening of the silenced X chromosome in females help slow aging-induced cognitive decline? Check out the work by @denadubal.bsky.social along with colleagues Kaitlin Casaletto, Bérénice Benayoun, and Vijay Ramani in Science Advances: bit.ly/3FlN3hj #GeroSky #SciSky

Aging activates escape of the silent X chromosome in the female mouse hippocampus

Aging activates the silent X chromosome, increasing escape expression, and potentially cognitive resilience, in the female mouse.

science.org

"A little boost went a long way". Increasing an X factor from the silent X improved cognition in aging male and female mice. Privileged to have our discovery reported in @nytimes.com, alongside findings from Kaitlin Casaletto and Rachel Buckley @bucklr01.bsky.social. www.nytimes.com/2025/03/05/h...

Aging Women’s Brain Mysteries Are Tested in Trio of Studies (Gift Article)

Researchers identified a gene that seems to help slow brain aging in women, and studied links between hormone therapy, menopause and Alzheimer’s.

nytimes.com

"We could all use a little more X!" Thrilled our new study is out. Aging "wakes up" the silent X chromosome in the female brain - and this contributes cognitive resilience. Spearheaded by @margaretgadek.bsky.social in Science Advances. www.science.org/doi/10.1126/...

Aging activates escape of the silent X chromosome in the female mouse hippocampus

Aging activates the silent X chromosome, increasing escape expression, and potentially cognitive resilience, in the female mouse.

science.org

Is brain aging mom's fault? When brain cells rely only on X chromosomes inherited from mom, they age more quickly, UCSF researchers led by @denadubal.bsky.social reported in @nature.com. Reversing the effect could help treat brain diseases or memory loss. www.ucsf.edu/news/2025/01...

Could Brain Aging Be Mom’s Fault?

Researchers found that female mice using only maternal X chromosomes showed faster cognitive decline, which could help explain the variation in brain aging between the sexes

ucsf.edu