Abstract
The objective of the present study was to investigate the effect of Gram-negative bacteria infection on ovarian steroid receptors, i.e. progesterone receptor (PR) and estradiol receptor (ER) during preimplantation days of pregnancy. A well established mouse model of Gram-negative bacteria infection was used to test this objective. Mice were treated with normal saline or lipopolysaccharide (LPS) on day 0.5 of pregnancy and used to collect embryos and uterine horns on day 1.5 to day 4.42 preimplantation day of pregnancy. Total RNA was extracted and reverse-transcription polymerase chain reaction (PCR) was performed to check the expression of PR and ER genes. The mRNA expression of PR and ER was altered in embryos and uterus of LPS-treated animals during preimplantation days of pregnancy studied. These results suggest that PR and ER play an important role in Gram-negative bacteria infection and induced implantation failure in mouse.
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