Study reveals surprising cause of immune challenges in people with Down syndrome
Getting sick can look very different for people with Down syndrome (DS); illnesses that are mild for most people may lead to serious complications, including pneumonia, hospitalization or the need for intensive care.
People with Down syndrome often face unique immune challenges, with mild illnesses potentially leading to serious complications. Scientists have long known that excess hydrogen sulfide—a gas harmful when it accumulates in cells—contributes to this susceptibility. While a gene on chromosome 21 called CBS was previously believed to be chiefly responsible for this overproduction, researchers at Texas A&M University have now identified a different gene, SOD1, that may play a larger role.
This gene, part of an alternative pathway, drives hydrogen sulfide overproduction and may explain chronic inflammation, increased infection susceptibility, and premature aging often associated with Down syndrome. The study, published in Science Advances, suggests that targeting this pathway could lead to new therapeutic strategies to improve the health and quality of life for people with Down syndrome.
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