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Association between genital mycoplasmas, acute chorioamnionitis and fetal pneumonia in spontaneous abortions

  • Maria Agnese Latino , Giovanni Botta , Claudia Badino , Daniela De Maria , Annalisa Petrozziello , Alessandra Sensini and Christian Leli ORCID logo EMAIL logo
Published/Copyright: May 25, 2017

Abstract

Aim:

Ureaplasma parvum, Ureaplasma urealyticum and Mycoplasma hominis are also known as genital mycoplasmas. Acute chorioamnionitis is an inflammation of the placenta associated with miscarriage. We retrospectively evaluated a possible association between genital mycoplasmas detection, acute chorioamnionitis and fetal pneumonia from second and third trimester spontaneous abortions.

Methods:

One hundred and thirty placenta and fetal lung samples were evaluated for histological examination. The placenta samples, along with corresponding fetal tracheo-bronchial aspirates, also underwent bacterial and fungal culture and real-time polymerase chain reaction (PCR) assay for the detection of genital mycoplasmas.

Results:

Acute chorioamnionitis and pneumonia were diagnosed in 80/130 (61.5%) and 22/130 (16.9%) samples, respectively. Among samples positive for acute chorioamnionitis, the proportion of samples positive by real-time PCR and/or culture, was significantly higher than that of negative controls [54/80 (67.5%) vs. 26/80 (32.5%); P<0.001]. Ureaplasma parvum detection was significantly associated with acute chorioamnionitis compared to controls [9/11 (81.8%) vs. 2/11 (18.2%); P=0.019], as well as U. urealyticum [6/7 (85.7%) vs. 1/7 (14.3%); P=0.039]. Among tracheo-bronchial aspirates from abortions with pneumonia, the proportion of real-time PCR and/or culture positive samples was significantly higher than that of controls [13/22 (59.1%) vs. 9/22 (40.9%); P=0.029].

Conclusions:

A strong association was found between acute histologic chorioamnionitis and microbial invasion with U. parvum and/or U. urealyticum.


Corresponding author: Christian Leli, MD, Unit of Microbiology and Virology, University Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy

  1. Author’s statement

  2. Conflict of interest: Authors state no conflict of interest.

  3. Material and methods: Informed consent: Informed consent has been obtained from all individuals included in this study.

  4. Ethical approval: The research related to human use has been complied with all the relevant national regulations, institutional policies and in accordance the tenets of the Helsinki Declaration, and has been approved by the authors’ institutional review board or equivalent committee.

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Received: 2016-9-15
Accepted: 2017-2-9
Published Online: 2017-5-25
Published in Print: 2018-7-26

©2018 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. A transformative icon for modern perinatology
  4. Highlight: Preterm Labor
  5. Editorial
  6. What’s new in preterm birth prediction and prevention?
  7. Review articles
  8. Pulmo uterinus: a history of ideas on fetal respiration
  9. Mid-trimester preterm premature rupture of membranes (PPROM): etiology, diagnosis, classification, international recommendations of treatment options and outcome
  10. Highlight articles
  11. A soft cervix, categorized by shear-wave elastography, in women with short or with normal cervical length at 18–24 weeks is associated with a higher prevalence of spontaneous preterm delivery
  12. Association between genital mycoplasmas, acute chorioamnionitis and fetal pneumonia in spontaneous abortions
  13. Methylation differences reveal heterogeneity in preterm pathophysiology: results from bipartite network analyses
  14. Understanding fetal factors that contribute to preterm birth: Sjögren-Larsson syndrome as a model
  15. Safety and efficacy of the cervical pessary combined with vaginal progesterone for the prevention of spontaneous preterm birth
  16. Risk of preterm birth by maternal age at first and second pregnancy and race/ethnicity
  17. Infant mortality and causes of death by birth weight for gestational age in non-malformed singleton infants: a 2002–2012 population-based study
  18. Perinatal outcomes after previable preterm premature rupture of membranes before 24 weeks of gestation
  19. Letter to the Editor
  20. Fundal pressure: risk factors in uterine rupture. The issue of liability: complication or malpractice?
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