Publications by authors named "Leo Doherty"

Objective: To determine whether transforming growth factor (TGF)-β3 is a paracrine signal secreted by leiomyoma that inhibits bone morphogenetic protein (BMP)-mediated endometrial receptivity and decidualization.

Design: Experimental.

Setting: Laboratory.

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Uterine fibroids (leiomyomata) are extremely common lesions that are associated with detrimental effects including infertility and abnormal uterine bleeding. Fibroids cause molecular changes at the level of endometrium. Abnormal regulation of growth factors and cytokines in fibroid cells may contribute to negative endometrial effects.

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Objective: To describe the surgical findings in two adolescents with 46,XY complete gonadal dysgenesis.

Design: Report of two cases.

Setting: University teaching hospital.

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Article Synopsis
  • Diethylstilbestrol (DES) and bisphenol-A (BPA) are endocrine-disrupting chemicals that cause long-lasting epigenetic changes in the uterus and are linked to a higher risk of breast cancer in women.
  • The study examined how these chemicals affect the expression and function of EZH2, a protein related to breast cancer, in both cultured cells and the mammary glands of mice exposed to these chemicals in utero.
  • Results showed that both DES and BPA significantly increased EZH2 levels and trimethylation of histone H3 in treated cells and mouse mammary tissue, suggesting that early exposure to these compounds can lead to detrimental epigenetic changes in the mammary gland.
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Tryptophan 2,3-dioxygenase (TDO) is expressed in endometrium and catabolizes tryptophan, a precursor in the biosynthesis of serotonin. Tryptophan metabolism is an important mechanism for regulation of serotonin levels. Preimplantation mouse embryos are known to express serotonin receptors, specifically the 5-HT1D and 5-HT7 serotonin receptor subtypes.

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Bisphenol-A (BPA) is a nonsteroidal estrogen that is ubiquitous in the environment. The homeobox gene Hoxa10 controls uterine organogenesis, and its expression is affected by in utero BPA exposure. We hypothesized that an epigenetic mechanism underlies BPA-mediated alterations in Hoxa10 expression.

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Article Synopsis
  • An abnormal decrease in placental weight is associated with serious perinatal issues like intrauterine fetal demise (IUFD) and fetal growth restriction (IUGR).
  • Current methods for assessing placental weight prenatally using advanced three-dimensional imaging are costly and complex.
  • A new approach using two-dimensional ultrasound allows for quick and simple estimation of placental volume, showing a strong correlation with actual placental weight, indicating potential for routine use in prenatal care to reduce complications.
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Objective: To report a novel mutation found in a family with hand-foot-genital syndrome (HFGS). To characterize the genetic basis of true HFGS versus presence of non-HFGS-related uterovaginal septa.

Design: Case-control study.

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Purpose Of Review: Prolonged (postterm) pregnancies are associated with both fetal and maternal complications. A variety of management practices can be utilized to mitigate the risk of these complications.

Recent Findings: In addition to routine induction of labor at 41 weeks, a number of alternative management strategies show promise in preventing adverse fetal outcomes.

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Circadian rhythms are generated by the oscillating expression of the Per1 and Per2 genes, which are expressed not only in the central brain pacemaker but also in peripheral tissues. Hormones are likely to coordinate physiological function in time. We performed in situ hybridization to localize mPer1 and mPer2 mRNA to particular cell types and tissue compartments in adrenal, thyroid, and testis.

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