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  • Title: Role of serum microRNAs as biomarkers for endometriosis, endometrioid carcinoma of ovary & endometrioid endometrial cancer.
    Author: Kumari P, Sharma I, Saha SC, Srinivasan R, Bhardwaj P.
    Journal: Indian J Med Res; 2022 Sep; 156(3):516-523. PubMed ID: 36751747.
    Abstract:
    BACKGROUND & OBJECTIVES: Accurate and early diagnosis is imperial in the management of endometriosis, endometrioid carcinoma of ovary (ECO) and endometrioid endometrial cancer (EC), yet there are no definitive diagnostic methods available for these diseases. Therefore, the present study was aimed to evaluate the diagnostic potential of differentially expressed miRNAs in serum samples of women with endometriosis, ECO and EC to establish them as diagnostic biomarkers. METHODS: Blood samples (5 ml) were obtained from 40 patients (n=10/study group) undergoing laparoscopy/laparotomy/hysterectomy. miRNA-rich RNA was extracted from the serum samples, and quantitative real-time (qRT)-PCR was performed to check the expression levels of miR-16, miR-99b, miR-20a, miR-145, miR-143 and miR-125a in all the samples. Receiver operating characteristic (ROC) curve analysis was done to check the diagnostic potential. RESULTS: In endometriosis, miR-16 was downregulated (P<0.05) whereas miR-99b, miR-125a, miR-143 and miR-145 were upregulated (P<0.05). In ECO group, downregulated expression of miR-16 and miR-125a (P<0.05) was observed, whereas miR-99b, miR-143 and miR-145 were upregulated (P<0.05). In endometrioid EC, miR-16, miR-99b, miR-125 and miR-145 were downregulated (P<0.05), whereas miR-143 was upregulated (P<0.05). ROC curve analysis showed that, for endometriosis, miR-99b, miR-125a, miR-143 and miR-145 served as diagnostic markers. miR-145 showed diagnostic power for ECO, and for endometrioid EC, miR-16, miR-99b, miR-125a and miR-145 showed diagnostic potential. INTERPRETATION & CONCLUSIONS: The present findings suggested that certain circulating miRNAs (miB99b, miR-16, miR-125a, miR-145) might act as indicators and discriminators of endometriosis and endometrioid subtypes of EC and ovarian cancer and might serve as potential biomarkers for early diagnosis and management of these debilitating diseases.
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