OBJECTIVE: Saliva is important for oral health, including the prevention of dental decay. The purpose of the present work was to indicate whether the parotid gland has altered function in the elderly, particularly in terms of proteins secreted, and whether its functional status could be associated with the presence of root caries. MATERIAL AND METHODS: Ductal parotid gland secretion was obtained from 51 individuals: 21 elderly with carious roots (Patients), 20 elderly (Controls), and 10 adults (Young) without root caries. Pooled aliquots were analyzed by liquid chromatography/tandem mass spectrometry to yield lists of major proteins present in the three groups. RESULTS: Approximately 200 unique proteins were detected, of which 73 were identified repeatedly with high confidence and therefore included in the comparison. Some of the differences observed, when comparing Patients with respectively elderly Controls and the Young, resembled changes found in patients with Sjogren's syndrome, a condition associated with dental decay. Other changes involved proteins that are likely to impact on the oral microbiota, such as the absence of dermcidin and the presence of collagen in Patients. Cystatin S, a putative indicator of caries, was present at a higher level in Patients. CONCLUSIONS: Parotid function tends to change upon aging, with possible consequences as to caries activity. However, analyses of individual samples revealed considerable variations in protein patterns.
OBJECTIVE: Saliva is important for oral health, including the prevention of dental decay. The purpose of the present work was to indicate whether the parotid gland has altered function in the elderly, particularly in terms of proteins secreted, and whether its functional status could be associated with the presence of root caries. MATERIAL AND METHODS: Ductal parotid gland secretion was obtained from 51 individuals: 21 elderly with carious roots (Patients), 20 elderly (Controls), and 10 adults (Young) without root caries. Pooled aliquots were analyzed by liquid chromatography/tandem mass spectrometry to yield lists of major proteins present in the three groups. RESULTS: Approximately 200 unique proteins were detected, of which 73 were identified repeatedly with high confidence and therefore included in the comparison. Some of the differences observed, when comparing Patients with respectively elderly Controls and the Young, resembled changes found in patients with Sjogren's syndrome, a condition associated with dental decay. Other changes involved proteins that are likely to impact on the oral microbiota, such as the absence of dermcidin and the presence of collagen in Patients. Cystatin S, a putative indicator of caries, was present at a higher level in Patients. CONCLUSIONS: Parotid function tends to change upon aging, with possible consequences as to caries activity. However, analyses of individual samples revealed considerable variations in protein patterns.
Authors: Sompop Bencharit; Sandra K Altarawneh; Sarah Schwartz Baxter; Jim Carlson; Gary F Ross; Michael B Border; C Russell Mack; Warren C Byrd; Christopher F Dibble; Silvana Barros; Zvi Loewy; Steven Offenbacher Journal: Mol Biosyst Date: 2012-10-30
Authors: Carolina Diaz de Guillory; John D Schoolfield; Dorthea Johnson; Chih-Ko Yeh; Shuo Chen; David P Cappelli; Irene G Bober-Moken; Howard Dang Journal: Gerodontology Date: 2013-01-04 Impact factor: 2.980
Authors: Galina Laputková; Vladimíra Schwartzová; Juraj Bánovčin; Michal Alexovič; Ján Sabo Journal: Open Life Sci Date: 2018-05-18 Impact factor: 0.938
Authors: Rafael Guerrero-Preston; Filipa Godoy-Vitorino; Anne Jedlicka; Arnold Rodríguez-Hilario; Herminio González; Jessica Bondy; Fahcina Lawson; Oluwasina Folawiyo; Christina Michailidi; Amanda Dziedzic; Rajagowthamee Thangavel; Tal Hadar; Maartje G Noordhuis; William Westra; Wayne Koch; David Sidransky Journal: Oncotarget Date: 2016-08-09