Research Article

Lactobacillus iners Is Associated with Vaginal Dysbiosis in Healthy Pregnant Women: A Preliminary Study

Table 3

Comparison of the relative abundance of vaginal bacteria by quantitative real-time PCR according to trimesters of pregnancy.

SpeciesParticipants in 1st trimester (n = 33)Participants in 2nd trimester (n = 24)Participants in 3rd trimester (n = 26) value

Lactobacillus genus (%)31.57 (23.94)59.80 (21.96) b64.14 (21.61) b<0.001
L. jensenii (%)a0.07 (0.32)0.43 (2.07)0.27 (1.31)0.633
L. crispatus (%)a5.74 (10.39)13.21 (12.96) c9.67 (10.47)0.030
L. iners (%)a14.86 (19.74)4.16 (7.97) d5.02 (7.24) d<0.001
Atopobium vaginae (%)1.21 (3.17)2.63 (12.86)0.03 (0.16)0.897
Gardnerella vaginalis (%)0.10 (0.24)0.08 (0.34)2.49 (12.67)0.944
Eggerthella (%)0.05 (0.21)0.00 (0.00)0.00 (0.00)0.466
Leptotrichia/Sneathia (%)0.04 (0.12)0.00 (0.00)0.00 (0.00)0.432
Megasphaera type (%)0.29 (0.80)0.02 (0.10)0.02 (0.09)0.569
Prevotella (%)0.19 (0.45)0.00 (0.01)0.09 (0.45)0.169

All data are mean (standard deviation). aThe relative abundance of L. crispatus, L. jensenii, and L. iners was compared to the copy number of Lactobacillus genus; bcompared with 1st trimester, ; ccompared with 1st trimester, ; dcompared with 1st trimester, .