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Optimization and validation of two multiplex qPCR assays for the rapid detection of microorganisms commonly invading the amniotic cavity. | LitMetric

Optimization and validation of two multiplex qPCR assays for the rapid detection of microorganisms commonly invading the amniotic cavity.

J Reprod Immunol

Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD, and, MI, Detroit, MI, USA; Perinatal Research Initiative in Maternal, Perinatal and Child Health, Wayne State University School of Medicine, Detroit, MI, USA; Department of Biochemistry, Microbiology, and Immunology, Wayne State University School of Medicine, Detroit, MI, USA; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA. Electronic address:

Published: February 2022

AI Article Synopsis

Article Abstract

Microbial invasion of the amniotic cavity (MIAC) leading to infection is strongly associated with adverse pregnancy and neonatal outcomes. Limitations of current diagnostic assays to detect MIAC rapidly and accurately have hindered the ability of obstetricians to identify and treat intra-amniotic infections. We developed, optimized, and validated two multiplex quantitative polymerase chain reaction (qPCR) assays for the simultaneous detection and quantification of microbial taxa commonly associated with MIAC. The first assay allows for the quantification of general bacterial and fungal loads in amniotic fluid and includes a human reference gene to allow for assessing the integrity of clinical samples and the DNA extraction process. The second assay allows for the detection and quantification of four specific bacterial taxa commonly associated with MIAC: Ureaplasma spp., Mycoplasma hominis, Streptococcus agalactiae, and Fusobacterium nucleatum. The qPCR assays were validated by using both microbial isolates and clinical amniotic fluid samples. The assays were further validated by comparing qPCR amplification results to those from the microbial culture and bacterial 16S rRNA gene sequencing of amniotic fluid. Both assays demonstrated high reproducibility and are sensitive and specific to their intended targets. Therefore, these assays represent promising molecular diagnostic tools for the detection of MIAC. Most importantly, these assays may allow for administration of timely and targeted antibiotic interventions to reduce adverse perinatal outcomes attributed to intra-amniotic infections.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8941673PMC
http://dx.doi.org/10.1016/j.jri.2021.103460DOI Listing

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