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Dry Mouth Therapies Possible Via Mechanism in Saliva Production
The scientific discovery of Douglas Darling, professor, Department of Oral Health and Rehabilitation, UofL School of Dentistry, and his team could form the basis for advanced therapies for patients whose salivary glands are damaged or no longer functioning due to radiation therapy, prescription drugs or Sjogren's Syndrome - an immune system disorder often defined by its two most common symptoms - dry eyes and a dry mouth.
The salivary glands are essential for lubrication, defense and beginning digestion in the mouth.
The largest of the salivary glands - the parotid - secretes important proteins into the saliva. As with all salivary glands, it has multiple secretion pathways, therefore it must sort proteins destined for saliva into the correct pathway for secretion.
This can be tricky as there are seven possible pathways. One pathway takes proteins to the salivary duct, other pathways carry different proteins to the 'back' side of the cell to be secreted into the blood or to form a supportive matrix for the cells. Transport along these pathways occurs by sorting the proteins into vesicles (hollow membrane sacs) that carry their "cargo" to the correct destination.
Conventional thought was that cargo proteins are moved into the forming vesicles by attaching to sorting receptor proteins.
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