The association between ethnicity and vaginal microbiota composition in Amsterdam, the Netherlands

Borgdorff, Hanneke, van der Veer, Charlotte ORCID: 0000-0002-1685-1622, van Houdt, Robin, Alberts, Catharina J, de Vries, Henry J, Bruisten, Sylvia M, Snijder, Marieke B, Prins, Maria, Geerlings, Suzanne E, van der Loeff, Maarten F Schim
et al (show 1 more authors) (2017) The association between ethnicity and vaginal microbiota composition in Amsterdam, the Netherlands. PLOS ONE, 12 (7). e0181135-.

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<h4>Objective</h4>To evaluate whether ethnicity is independently associated with vaginal microbiota (VMB) composition in women living in Amsterdam, the Netherlands, as has been shown for American women.<h4>Methods</h4>Women (18-34 years, non-pregnant, N = 610) representing the six largest ethnic groups (Dutch, African Surinamese, South-Asian Surinamese, Turkish, Moroccan, and Ghanaian) were sampled from the population-based HELIUS study. Sampling was performed irrespective of health status or healthcare seeking behavior. DNA was extracted from self-sampled vaginal swabs and sequenced by Illumina MiSeq (16S rRNA gene V3-V4 region).<h4>Results</h4>The overall prevalence of VMBs not dominated by lactobacilli was 38.5%: 32.2% had a VMB resembling bacterial vaginosis and another 6.2% had a VMB dominated by Bifidobacteriaceae (not including Gardnerella vaginalis), Corynebacterium, or pathobionts (streptococci, staphylococci, Proteus or Enterobacteriaceae). The most prevalent VMB in ethnically Dutch women was a Lactobacillus crispatus-dominated VMB, in African Surinamese and Ghanaian women a polybacterial G. vaginalis-containing VMB, and in the other ethnic groups a L. iners-dominated VMB. After adjustment for sociodemographic, behavioral and clinical factors, African Surinamese ethnicity (adjusted odds ratio (aOR) 5.1, 95% confidence interval (CI) 2.1-12.0) and Ghanaian ethnicity (aOR 4.8, 95% CI 1.8-12.6) were associated with having a polybacterial G. vaginalis-containing VMB, and African Surinamese ethnicity with a L. iners-dominated VMB (aOR 2.8, 95% CI 1.2-6.2). Shorter steady relationship duration, inconsistent condom use with casual partners, and not using hormonal contraception were also associated with having a polybacterial G. vaginalis-containing VMB, but human papillomavirus infection was not. Other sexually transmitted infections were uncommon.<h4>Conclusions</h4>The overall prevalence of having a VMB not dominated by lactobacilli in this population-based cohort of women aged 18-34 years in Amsterdam was high (38.5%), and women of sub-Saharan African descent were significantly more likely to have a polybacterial G. vaginalis-containing VMB than Dutch women independent of modifiable behaviors.

Item Type: Article
Uncontrolled Keywords: Vagina, Humans, Enterobacteriaceae, Proteus, Corynebacterium, Bifidobacterium, Staphylococcus, Streptococcus, Lactobacillus, RNA, Ribosomal, 16S, Adolescent, Adult, Netherlands, Female, Young Adult, Microbiota
Depositing User: Symplectic Admin
Date Deposited: 14 Jul 2017 09:54
Last Modified: 19 Jan 2023 06:59
DOI: 10.1371/journal.pone.0181135
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