Elsevier

Clinics in Perinatology

Volume 37, Issue 3, September 2010, Pages 677-688
Clinics in Perinatology

Progress Toward Improved Understanding of Infection-Related Preterm Birth

https://doi.org/10.1016/j.clp.2010.06.001Get rights and content

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BV: recent developments

BV is a pathologic state characterized by the loss of normal vaginal flora, particularly Lactobacillus species, and overgrowth of other microbes, including G vaginalis, Bacteroides sp, Mobiluncus sp, and Mycoplasma hominis. Reported prevalence rates for BV range from 10% to 40% depending on the population studied, with the vast majority of women being asymptomatic.15, 16 BV during pregnancy is an independent risk factor for preterm labor17 and is estimated to cause 90,000 excess premature

Improved identification of intrauterine infection

Intrauterine infection is believed to account for 25% to 40% of preterm births.42 However, the true prevalence of infection-associated preterm labor is likely to be grossly underestimated since these approximations rely primarily on traditional diagnostic strategies, including culture-based techniques, clinical criteria, or laboratory analysis of amniotic fluid. Standard culture-based techniques often do not identify fastidious organisms or other cultivation-resistant microbes. Also, many of

The fetal response to maternal infection

The fetus is capable of mounting an immune response following perturbations in the intrauterine environment. Elevated plasma concentrations of IL-6 and C-reactive protein (CRP) and a higher percentage of Th1 cells have all been documented in fetuses with preterm labor and preterm premature rupture of membranes (PROM).61, 62, 63, 64 However, it was not until 1998 that Gomez and colleagues64 formally described the fetal inflammatory response syndrome (FIRS) as a condition characterized by

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      According to the “multiple hit hypothesis”, a variety of noxious events such as fluctuations in oxygen supply caused by acute or chronic lung disease, drug exposure and inflammation may affect the developing brain and thereby result in cellular loss and maturation disturbances (Anjari et al., 2009; Brehmer et al., 2012; Cai et al., 2000; Felderhoff-Mueser et al., 2004; Kaindl et al., 2009). Predisposing factors for WMI are intrauterine and perinatal infections leading to systemic inflammation (Andrews et al., 1995; Hagberg and Mallard, 2005; Randis, 2010). In preclinical studies, lipopolysaccharide (LPS) is used in experimental models to mimic the clinical situation (Brehmer et al., 2012; Eklind et al., 2001).

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    The author has nothing to disclose.

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