However, Carpenter was not entirely convinced that hyposalivation drives periodontitis. “I don’t think there’s much evidence for that in…literature about human studies,” he said. Instead, he said that inflammation—which is present in Dp16 salivary glands—could cause hyposalivation. “There’s lots of literature that shows that inflammatory cells can affect salivary secretion,” he noted.
According to Yule, next steps could include looking at whether dysregulated calcium signaling—which is linked with several other diseases—also underlies other Down syndrome-related complications like Alzheimer’s disease. While drugs targeting calcium signaling could potentially help, there is a complexity to it, he noted. “Knowing what the target is [is] good, but the fact that the target is almost universal in cells, then that makes you think about whether it’s something that could be targeted,” explained Yule.
Lacruz agreed that disrupted calcium signaling occurs in other tissues as well. “Understanding why calcium is dysregulated is an important part of what we need to do [next],” he said. More work needs to be done to translate the findings to the clinic, “but we see that as a way forward to potentially impacting the lives of individuals with Down syndrome,” said Lacruz.
