Features of the microbiota of placenta in full-term pregnancy
- Authors: Bezrukova A.A.1, Spiridonova N.V.1, Kaganova M.A.1, Galkina D.A.2
-
Affiliations:
- Samara State Medical University
- Samara City Clinical Hospital No. 1 named after N.I. Pirogov
- Issue: Vol 20, No 5-6 (2020)
- Pages: 7-14
- Section: Clinical Medicine
- URL: https://journals.rcsi.science/2410-3764/article/view/84436
- DOI: https://doi.org/10.17816/2072-2354.2020.20.3.7-14
- ID: 84436
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Abstract
Objective: to study the microbial landscape of the placenta in full-term pregnancy and intact fetal membranes.
Materials and methods. 19 pregnant women in the gestational age of 37-41 weeks with intact membranes underwent elective cesarean section at Samara City Clinical Hospital No. 1 named after N.I. Pirogov. Their placental tissues were collected and RT-PCR tests for Lactobacillus spp., Enterobacteriaceae, Streptococcus spp., Staphylococcus spp., Gardnerella vaginalis / Prevotella bivia / Porphyromonas spp., Eubacterium spp., Sneathia spp. / Leptotrihia spp. / Fusobacterium spp, Megasphaera spp. / Veillonella spp. / Dialister spp., Lachnobacterium spp. / Clostridium spp., Mobiluncus spp. / Corynebacterium spp., Peptostreptococcus spp., Atopobiumvaginae, Mycoplasma hominis, Ureaplasma (urealyticum + parvum), Candida spp., Mycoplasma henitalium were performed.
Results. In case of physiological full-term pregnancy the total bacterial mass can be 103.9-103.7 GE/sample on the placenta, it is a normal variant. Sterile placentas were found in 21.1% of cases. “Unknown” microorganisms were revealed in 52.6% of cases, they were unidentified by the standard panel “Femoflor-16”. In other cases Enterobacteriaceae spp. (102.6 GE/sample) were found in the placental tissues in patients with intact fetal membrane. The presence of Lactobacillus spp. in the placental tissues with intact membranes is not typical.
Conclusion. RT-PCR test allow to reveal a small amount of bacterial mass in the placental tissue in case of physiological full-term pregnancy, in which the representatives of Enterobacteriaceae spp. are often time detected.
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##article.viewOnOriginalSite##About the authors
Alina A. Bezrukova
Samara State Medical University
Author for correspondence.
Email: bezzrukovaa@yandex.ru
assistant of the Department of Food Hygiene with a Course of Hygiene for Children and Adolescents
Russian Federation, SamaraNatalya V. Spiridonova
Samara State Medical University
Email: nvspiridonova@mail.ru
Doctor of Medical Sciences, Professor, Head of the Department of Obstetrics and Gynecology, IPE
Russian Federation, SamaraMaria A. Kaganova
Samara State Medical University
Email: mkaganova@yandex.ru
Candidate of Medical Sciences, Associate Professor, Department of Оbstetrics and Gynecology, IPE
Russian Federation, SamaraDarya A. Galkina
Samara City Clinical Hospital No. 1 named after N.I. Pirogov
Email: darya.golubeva.1992@mail.ru
MD, Obstetrician-Gynecologist
Russian Federation, SamaraReferences
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