New Delhi, Aug 13
Women with Down syndrome have more advanced signs of Alzheimer's disease than men do, according to research.
However, the average age of Down syndrome diagnosis is the same for both men and women, said the University of California, Irvine.
The study suggests that women with Down syndrome may carry a higher burden of beta amyloid and phosphorylated tau -- two hallmark Alzheimer's proteins -- than men. It was particularly high in the occipital lobe in women with sporadic Alzheimer's disease -- the more common, late-onset form of Alzheimer's that occurs without a clear genetic cause.
This insight points to the need for more sex-specific approaches in both Alzheimer's research and treatment planning, especially in the design of clinical trials.
"Understanding selective vulnerabilities within the brain and how these differ in women versus men will help us to better navigate treatment outcomes. We're learning the importance of modifiable risk factors, which include accounting for sex-specific risk," said lead author Elizabeth Andrews, doctoral candidate at the varsity.
Alzheimer's disease is the primary cause of death for individuals with Down syndrome, who are genetically predisposed to develop the condition earlier in life.
While previous studies observed that women with Down syndrome may live longer with dementia than men with Down syndrome, few have looked closely at whether the underlying brain pathology differs by sex.
In this study, the researchers examined postmortem brain samples and measured levels of beta amyloid and tau.
The findings, published in the journal Alzheimer's & Dementia, can shape how we understand and approach treatments for Alzheimer's in this population and beyond.
"If women with Down syndrome are further along in disease progression at the time of diagnosis, it could change how we time interventions and interpret outcomes in clinical trials," said Elizabeth Head, Professor of pathology at UC Irvine.
"This research could help tailor therapies more effectively, not just for people with Down syndrome, but for the broader Alzheimer's population as well," Head added.
— IANS
Reader Comments
The gender difference is surprising. I wonder if hormonal factors play a role here? Indian medical research should also focus on such studies. Our population is different from Western countries after all.
As a special educator in Mumbai, I see firsthand how families struggle with Down syndrome care. This research highlights why we need better healthcare policies for neurodivergent individuals in India. The government should take note!
While the study is important, I'm concerned about the sample size. Did they include any Indian participants? Most such studies focus on Western populations which may not reflect our genetic diversity.
My sister has Down syndrome and this news is scary 😔 But knowledge is power - now we can be more watchful for early signs. Hope Indian doctors become more aware of this connection too.
Interesting research but I wish they explained why women are more affected. Is it biological or could social factors (like caregiving burdens in India) contribute to faster progression?
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