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Differentially Expressed Salivary Proteins in Dental Caries Patients.

Abstract
Dental caries is a multifactorial disease mainly caused by cariogenic bacteria commonly found in the oral cavity. Dental caries may cause demineralization of the tooth, cavitation, hypersensitivity, pulp inflammation, and even tooth loss if left untreated. Saliva secreted in the oral cavity can serve as a tool for identification of biomarkers for early detection of diseases. In the present study, differential expression of salivary proteins from 33 dental caries patients was compared with 10 control subjects. The unstimulated saliva was analyzed by 12% SDS-PAGE and two-dimensional gel electrophoresis. Gelatin and casein zymography was performed to check for protease activity. Also, salivary IgAs from both groups were compared by sandwich ELISA technique. Dental caries patient's saliva showed decreased caseinolytic and increased gelatinolytic activity probably due to metalloproteases and cathepsins. Mean salivary levels of sIgA were also significantly higher (p < 0.018) in dental caries saliva samples. The 2D electrophoresis profile of both the groups showed regions on gel with visually detectable alterations in protein expression. The present study is among the few initial studies in the locality for identification of protein differences in saliva from dental caries patients and has demonstrated a good potential to identify alterations. However, a large population-based analysis is required to validate these findings to be translated as a tool for indicative applications.
AuthorsZaid Majeed Khan, Humera Waheed, Zohaib Khurshid, Muhammad Sohail Zafar, Syed Faraz Moin, Mohammad Khursheed Alam
JournalBioMed research international (Biomed Res Int) Vol. 2021 Pg. 5517521 ( 2021) ISSN: 2314-6141 [Electronic] United States
PMID34692832 (Publication Type: Journal Article)
CopyrightCopyright © 2021 Zaid Majeed Khan et al.
Chemical References
  • Biomarkers
  • Immunoglobulin A
  • Salivary Proteins and Peptides
Topics
  • Adult
  • Biomarkers (metabolism)
  • Case-Control Studies
  • Dental Caries (metabolism, pathology)
  • Female
  • Humans
  • Immunoglobulin A (metabolism)
  • Male
  • Middle Aged
  • Proteomics
  • Saliva (metabolism)
  • Salivary Proteins and Peptides (biosynthesis, metabolism)

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