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  • Title: Characterization of salivary protein during ovulatory phase of menstrual cycle through MALDI-TOF/MS.
    Author: Alagendran S, Saibaba G, Muthukumar S, Rajkumar R, Guzman RG, Archunan G.
    Journal: Indian J Dent Res; 2013; 24(2):157-63. PubMed ID: 23965438.
    Abstract:
    CONTEXT: Predicting ovulation is the basis on which the fertile period is determined. Nowadays there are many methods available to detect the ovulatory period. Unfortunately, these methods are not always effective for accurate detection of ovulation. Hence, an attempt was made to detect ovulation through single dimension sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis of protein with the help of saliva ferning. AIMS: The aim of this study was to determine the association of protein level with endogenous reproductive hormone level across the menstrual cycle. SETTINGS AND DESIGN: Salivary protein and its confirmation were evaluated during menstrual cycle followed by SDS-PAGE and Mass spectrometry. STATISTICAL METHOD USED: The protein content present in saliva throughout menstrual cycle is trail by SPSS statistical software version. MATERIALS AND METHODS: Salivary proteins were investigated serially during pre-ovulatory, ovulatory and post-ovulatory periods of normal menstrual cycle in eighteen healthy volunteers. The samples were collected in three consecutive menstrual cycles. Salivary protein was estimated and analyzed by single dimension SDS-PAGE. RESULTS: The results revealed significant variations in protein concentrations during the menstrual cycle. Protein levels were maximum during ovulation and minimum during postovulatory phase. Further, single dimension SDS-PAGE analysis showed seven different fractions of proteins is from 14-90 kilo Dalton (kDa) in the three phases of the menstrual cycle. CONCLUSIONS: Among the proteins, 48 kDa protein was more predominantly exhibited during ovulatory phase than pre and post-ovulatory phase. The present study indicates that the protein level and the specific protein band (48 kDa) through MALDI-TOF MS analysis might serve as an indicator for ovulation.
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