Study of methyl transferase (G9aMT) and methylated histone (H3-K9) expressions in unexplained recurrent spontaneous abortion (URSA) and normal early pregnancy.

Abstract:

:We investigated the expression of methyl transferase G9a and methylated histone H3-K9 in fresh human decidual/endometrial tissue of 12 normal early pregnancies and 15 unexplained recurrent spontaneous abortions (URSA). The samples were obtained through dilatation and curettage and collected as per strict inclusion-exclusion criteria. The tissue was subjected to immunohistochemical analysis (IHC), western blotting (WB) and RT-PCR analysis. The results demonstrated methyl transferase G9a to have a lower expression in abortions when compared with that in normal pregnancy (P < 0.05). The sensitivity of RT-PCR, IHC and WB were respectively 66.67, 75 and 71.43%, while specificity of the same were 66.67, 60 and 78.92%, respectively. Methylated histone H3-K9 was significantly lower (P < 0.0001) in URSA tissues than in controls. This study suggests that methylation may cause URSA and indicates the need for further work to explore the role of methylation in URSA and its possible prevention through locally acting methylating/demethylating agents.

journal_name

Mol Hum Reprod

authors

Fatima N,Ahmed SH,Salhan S,Rehman SM,Kaur J,Owais M,Chauhan SS

doi

10.1093/molehr/gar038

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

693-701

issue

11

eissn

1360-9947

issn

1460-2407

pii

gar038

journal_volume

17

pub_type

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