Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women

Abstract Background The establishment of symbiotic microbiota in pregnant women is important for both the mother and her offspring. Little is known about the salivary symbiotic bacteria in pregnancy, and analysis of composition of microbiome (ANCOM) is useful to detect small differences in the numbe...

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Main Authors: Satsuki Kato, Toshiyuki Nagasawa, Osamu Uehara, Shintaro Shimizu, Nodoka Sugiyama, Kozue Hasegawa-Nakamura, Kazuyuki Noguchi, Masayuki Hatae, Hiroshige Kakinoki, Yasushi Furuichi
Format: Article
Language:English
Published: BMC 2022-06-01
Series:BMC Oral Health
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Online Access:https://doi.org/10.1186/s12903-022-02293-0
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author Satsuki Kato
Toshiyuki Nagasawa
Osamu Uehara
Shintaro Shimizu
Nodoka Sugiyama
Kozue Hasegawa-Nakamura
Kazuyuki Noguchi
Masayuki Hatae
Hiroshige Kakinoki
Yasushi Furuichi
author_facet Satsuki Kato
Toshiyuki Nagasawa
Osamu Uehara
Shintaro Shimizu
Nodoka Sugiyama
Kozue Hasegawa-Nakamura
Kazuyuki Noguchi
Masayuki Hatae
Hiroshige Kakinoki
Yasushi Furuichi
author_sort Satsuki Kato
collection DOAJ
description Abstract Background The establishment of symbiotic microbiota in pregnant women is important for both the mother and her offspring. Little is known about the salivary symbiotic bacteria in pregnancy, and analysis of composition of microbiome (ANCOM) is useful to detect small differences in the number of bacteria. The aim of this study was to investigate the differences in the salivary bacteria between healthy pregnant and non-pregnant women using ANCOM. Methods Unstimulated saliva samples were collected from 35 healthy pregnant women at 35 weeks gestation and 30 healthy non-pregnant women during menstruation. All participants underwent a periodontal examination. Estradiol and progesterone levels were examined by enzyme-linked immunosorbent assay. DNA extracted from the saliva was assessed by 16S ribosomal RNA amplicon sequencing and real-time PCR. Results Salivary estradiol and progesterone levels were significantly increased in pregnant women. The alpha and beta diversities were higher in pregnant women than in non-pregnant women. The largest effect size difference noted when the microbiota of the pregnant and non-pregnant women were analyzed was that for Bifidobacteriales. Levels of Bifidobacterium dentium, but not of Bifidobacterium adolescentis, were significantly increased in pregnant women, and the levels were significantly correlated with progesterone concentration. Conclusion The results suggest that Bifidobacterium and progesterone levels are elevated in the saliva of healthy pregnant women compared with non-pregnant women.
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spelling doaj.art-5e46754b4f4a49c8932e5a99b1f4f62c2022-12-22T01:20:47ZengBMCBMC Oral Health1472-68312022-06-0122111310.1186/s12903-022-02293-0Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant womenSatsuki Kato0Toshiyuki Nagasawa1Osamu Uehara2Shintaro Shimizu3Nodoka Sugiyama4Kozue Hasegawa-Nakamura5Kazuyuki Noguchi6Masayuki Hatae7Hiroshige Kakinoki8Yasushi Furuichi9Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of HokkaidoDivision of Advanced Clinical Education, Department of Integrated Dental Education, School of Dentistry, Health Sciences University of HokkaidoDivision of Disease Control and Molecular Epidemiology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of HokkaidoDivision of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of HokkaidoDivision of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of HokkaidoDepartment of Periodontology, Field of Oral and Maxillofacial Rehabilitation, Advanced Therapeutic Course, Kagoshima University Graduate School of Medical and Dental SciencesDepartment of Periodontology, Field of Oral and Maxillofacial Rehabilitation, Advanced Therapeutic Course, Kagoshima University Graduate School of Medical and Dental SciencesKakinoki HospitalKakinoki HospitalDivision of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of HokkaidoAbstract Background The establishment of symbiotic microbiota in pregnant women is important for both the mother and her offspring. Little is known about the salivary symbiotic bacteria in pregnancy, and analysis of composition of microbiome (ANCOM) is useful to detect small differences in the number of bacteria. The aim of this study was to investigate the differences in the salivary bacteria between healthy pregnant and non-pregnant women using ANCOM. Methods Unstimulated saliva samples were collected from 35 healthy pregnant women at 35 weeks gestation and 30 healthy non-pregnant women during menstruation. All participants underwent a periodontal examination. Estradiol and progesterone levels were examined by enzyme-linked immunosorbent assay. DNA extracted from the saliva was assessed by 16S ribosomal RNA amplicon sequencing and real-time PCR. Results Salivary estradiol and progesterone levels were significantly increased in pregnant women. The alpha and beta diversities were higher in pregnant women than in non-pregnant women. The largest effect size difference noted when the microbiota of the pregnant and non-pregnant women were analyzed was that for Bifidobacteriales. Levels of Bifidobacterium dentium, but not of Bifidobacterium adolescentis, were significantly increased in pregnant women, and the levels were significantly correlated with progesterone concentration. Conclusion The results suggest that Bifidobacterium and progesterone levels are elevated in the saliva of healthy pregnant women compared with non-pregnant women.https://doi.org/10.1186/s12903-022-02293-0PregnancySalivary microbiotaEstradiolProgesteroneBifidobacterium
spellingShingle Satsuki Kato
Toshiyuki Nagasawa
Osamu Uehara
Shintaro Shimizu
Nodoka Sugiyama
Kozue Hasegawa-Nakamura
Kazuyuki Noguchi
Masayuki Hatae
Hiroshige Kakinoki
Yasushi Furuichi
Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
BMC Oral Health
Pregnancy
Salivary microbiota
Estradiol
Progesterone
Bifidobacterium
title Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
title_full Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
title_fullStr Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
title_full_unstemmed Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
title_short Increase in Bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non-pregnant women
title_sort increase in bifidobacterium is a characteristic of the difference in the salivary microbiota of pregnant and non pregnant women
topic Pregnancy
Salivary microbiota
Estradiol
Progesterone
Bifidobacterium
url https://doi.org/10.1186/s12903-022-02293-0
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