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  • Title: Methylation analysis of idiopathic recurrent spontaneous miscarriage cases reveals aberrant imprinting at H19 ICR in normozoospermic individuals.
    Author: Ankolkar M, Patil A, Warke H, Salvi V, Kedia Mokashi N, Pathak S, Balasinor NH.
    Journal: Fertil Steril; 2012 Nov; 98(5):1186-92. PubMed ID: 22959455.
    Abstract:
    OBJECTIVE: To study H19 ICR methylation levels in association with sperm parameters routinely analyzed in idiopathic recurrent spontaneous miscarriage cases. DESIGN: Case-control study. SETTING: Academic research setting. PATIENT(S): Male partners of couples with a history of idiopathic recurrent spontaneous miscarriage (RSM group) and male partners of couples with proven fertility (control group). INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Paternal age, sperm concentration, motility, chromatin compaction status, morphology, and H19 ICR methylation were assessed in control and idiopathic RSM group participants. RESULT(S): Paternal age and basic semen parameters analyzed did not show any significant difference between the two groups; however H19 ICR methylation levels were reduced significantly in the idiopathic RSM group compared with the control group. CONCLUSION(S): Significant reduction in the H19 ICR methylation without significant difference in the sperm parameters demonstrates aberrant imprinting to be associated with idiopathic RSM.
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