562: Alterations in micrornas and their target genes in human placentas of normal term pregnancies compared with those from pregnancies complicated by preeclampsia and preterm labor

Preterm labor (PTL) is one of the obstetric complications, and is known to be associated with abnormal maternal inflammatory response and intrauterine inflammation and/or infection. However, the expression of specific miRNAs associated with PTL is not clear. In this study, we performed combination analysis of miRNA array and gene array, and then selected one miRNA (miR-373-3p) and its putative target genes (CD44 and RDX) that exhibited large expression differences in term and PTL placentas with or without inflammation. Using qRT-PCR and luciferase assays, we confirmed that miR-373-3p directly targeted CD44 and RDX. Overexpression of miR-373-3p reduced the migration and invasion of trophoblast cells, while inhibition of miR-373-3p restored the migration and invasion abilities of trophoblast cells. Finally, we validated the expression of miR-373-3p and its target genes in clinical patients’ blood. miR-373-3p was increased in PTL patients’ blood, and was the most expressed in PTL patients’ blood with inflammation. In addition, by targeting the miR-373-3p, CD44 and RDX was decreased in PTL patients’ blood, and their expression were the lowest in PTL patients’ blood with inflammation. Taken together, these findings suggest that miR-373-3p and its target genes can be potential biomarkers for diagnosis of PTL.

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Inhibitory Effect of Iloprost on the Contractility of Lower Uterine Segment Myometrium From Rhesus Monkey in Normal-Term and Androstenedione-Induced Preterm Labor

Journal of the Society for Gynecologic Investigation ◽

10.1177/107155760000700305 ◽

2000 ◽

Vol 7 (3) ◽

pp. 167-169

Author(s):

Mark Baguma-Nibasheka ◽

Chalres A. Mecdnas ◽

Dino A. Giussani ◽

Peter W. Nathanielsz

Keyword(s):

Rhesus Monkey ◽

Preterm Labor ◽

Inhibitory Effect ◽

Lower Uterine Segment ◽

Normal Term

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Gingival Crevicular Fluid and Placental Tissue Levels of Interleukin-17 as a Possible Marker for Preterm Labor in Patients with Chronic Periodontitis

10.26810/2017.a1 ◽

2017 ◽

Vol 1 (1) ◽

pp. 1-11

Author(s):

Ahmed Y. Gamal ◽

Mohamed Agoor ◽

Olfat G. Shaker ◽

Fatma H. El-Demerdash ◽

Mohamed S. Sweed

Keyword(s):

Clinical Examination ◽

Chronic Periodontitis ◽

Preterm Labor ◽

Gingival Crevicular Fluid ◽

Placental Tissue ◽

Enzyme Linked Immunosorbent Assay ◽

Tissue Samples ◽

Term Birth ◽

Normal Term ◽

Crevicular Fluid

Background: The present study was conducted to evaluate the levels of interleukin (IL) – 17 in gingival crevicular fluid (GCF) and placental tissue samples of pregnant females as a possible marker in determining whether or not an association exists between chronic periodontitis and preterm labor. Methods: This case-control study included a random sample of 40 female patients, aged 18 to 35 years, who were assigned to one of the following four groups (10 subjects each): group 1 included patients who underwent spontaneous preterm birth (PB) and were diagnosed with chronic periodontitis upon clinical examination (preterm/periodontitis); group 2 included patients who underwent spontaneous PB and who had a healthy periodontium upon clinical examination (preterm/healthy periodontium); group 3 included patients who underwent spontaneous normal term birth and were diagnosed with chronic periodontitis upon clinical examination (term/periodontitis); and group 4 included patients who underwent spontaneous normal term birth and who had a healthy periodontium upon clinical examination (term/healthy periodontium). GCF and placental tissue samples were obtained from each patient and IL-17 levels were measured using enzyme-linked immunosorbent assay (ELISA). Results: GCF levels of IL-17 were significantly higher (P=0.010) in patients with chronic periodontitis compared to those with a healthy periodontium. No significant differences were observed in IL-17 levels in placental tissue samples of all study groups. Conclusion: An association between chronic periodontitis and preterm labor could not be established based on IL-17 levels measured in the present study.

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Nuclear receptors in disease: the oestrogen receptors

Essays in Biochemistry ◽

10.1042/bse0400157 ◽

2004 ◽

Vol 40 ◽

pp. 157-167 ◽

Cited By ~ 18

Author(s):

Maria Nilsson ◽

Karin Dahlman-Wright ◽

Jan-Åke Gustafsson

Keyword(s):

Nuclear Receptors ◽

Target Genes ◽

Receptor Subtype ◽

Target Tissue ◽

Oestrogen Receptors ◽

Nucleotide Polymorphisms ◽

Cell Type ◽

Single Nucleotide ◽

Beneficial Effects ◽

The Family

For several decades, it has been known that oestrogens are essential for human health. The discovery that there are two oestrogen receptors (ERs), ERalpha and ERbeta, has facilitated our understanding of how the hormone exerts its physiological effects. The ERs belong to the family of ligand-activated nuclear receptors, which act by modulating the expression of target genes. Studies of ER-knockout (ERKO) mice have been instrumental in defining the relevance of a given receptor subtype in a certain tissue. Phenotypes displayed by ERKO mice suggest diseases in which dysfunctional ERs might be involved in aetiology and pathology. Association between single-nucleotide polymorphisms (SNPs) in ER genes and disease have been demonstrated in several cases. Selective ER modulators (SERMs), which are selective with regard to their effects in a certain cell type, already exist. Since oestrogen has effects in many tissues, the goal with a SERM is to provide beneficial effects in one target tissue while avoiding side effects in others. Refined SERMs will, in the future, provide improved therapeutic strategies for existing and novel indications.

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