Pathogenic microbe detection in placental tissues supports placental pathobiome association with preterm birth risk in Pakistani women: A brief snapshot

Preterm birth (PTB) poses great risk to neonatal health in Pakistan with few tertiary health care facilities. Role of intrauterine microbiome in maintaining healthy pregnancy has been highlighted. However, there is ongoing debate whether a true placental microbiome exist. We analyzed placental and vaginal microbiome through V3–V4 16srRNA sequencing and observed increased abundance of proteobacteria, with concomitant decline in the firmicutes population in preterm vagina. Simplistic placental microflora included many environmental microbes with PTB placenta carrying pathogenic microbes like ureaplasma and mycoplasma species. We observed contribution of environmental, vaginal and skin contamination in term versus pathobiome signatures in preterm placenta.