Preliminary analysis of the protein profile in saliva during physiological term and preterm delivery

Łopucki,Maciej; Wawrzykowski,Jacek; Gęca,Tomasz; Miturski,Andrzej; Franczyk,Monika; Kankofer,Marta

doi:10.3892/mmr.2018.8909

Preliminary analysis of the protein profile in saliva during physiological term and preterm delivery

Authors:
- Maciej Łopucki
- Jacek Wawrzykowski
- Tomasz Gęca
- Andrzej Miturski
- Monika Franczyk
- Marta Kankofer
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Affiliations: Department of Gynaecological Oncology and Gynaecology, Medical University of Lublin, 20‑081 Lublin, Poland, Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20‑033 Lublin, Poland, Department of Obstetrics and Pathology of Pregnancy, Medical University of Lublin, 20‑081 Lublin, Poland
Published online on: April 20, 2018 https://doi.org/10.3892/mmr.2018.8909
Pages: 8253-8259
Copyright: © Łopucki et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

From a clinical point of view, easily obtainable and useful markers of a particular pathological status are required for appropriate diagnosis and treatment. Analysis of the proteomic profile of saliva may allow for the selection of potential marker of preterm delivery in humans. Saliva samples were collected from 12 patients diagnosed with threatened preterm delivery and 10 controls with uncomplicated pregnancies at the same gestational age. Samples were analysed using 2D electrophoresis. Based on statistical analysis, spots of interest were selected and collected from gels. Subsequently, spots were decoloured and proteins were identified by mass spectrometry using the matrix assisted laser desorption ionization‑time of flight technique. The results of identification were compared with the Swiss‑Prot database. A total of 1,393 spots were detected in the present study with 59 significantly different between control and preterm samples. Increased intensity of staining of 32 spots was observed in the premature delivery group compared with control patients and 27 spots were stained more intensely in the control group compared with the premature delivery group. A total of nine spots, which were significantly different between examined samples were identified and three of them exhibited increased intensity of staining in premature delivery group compared with controls, including dedicator of cytokinesis protein 1, metallothionein‑2, guanylyl cyclase‑activating protein 1. The six remaining spots included, epithelial‑stromal interaction protein 1, serum albumin, tyrosine‑tRNA ligase, cytoplasmic, protein chibby homolog 3, leukemia inhibitory factor receptor and adenosylhomocysteinase 3, and exhibited increased intensity of staining in healthy controls compared with premature delivery group. Further studies with an increased number of patients and identification of the complete protein profile are required to confirm the results of the present study and applicability of saliva as a source of disease biomarkers.

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