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Previously Unidentified Bacteria May Cause Preterm Birth

Date:
January 29, 2009
Source:
American Society for Microbiology
Summary:
A new study suggests that that previously unidentified bacteria may play a key role in intra-amniotic inflammation and ultimately preterm births.

A new study suggests that that previously unidentified bacteria may play a key role in intra-amniotic inflammation and ultimately preterm births.

Intra-amniotic infection and inflammation have long been associated with preterm births, however, intra-amniotic inflammation is often detected despite the absence of infection.

Researchers attribute this partly to the inability of the current microbial culture method used in hospitals (considered the "gold standard" for identifying intra-amniotic infection) to recognize uncultivated species. In a prior study new culture-independent techniques recognized a previously unidentified oral species implicated in a case of extremely early preterm birth.

In the study amniotic fluid specimens were collected from women who experienced pregnancies complicated by preterm births as well as asymptomatic women and examined using both the "gold standard" culture method and 16S rRNA-based culture independent methods. No bacterial DNA in the amniotic fluid from the asymptomatic women was detected, however, bacterial DNA was found in all of the culture-positive samples as well as 17% of the culture-negative samples in the amniotic fluid from preterm birth mothers. Additional species were detected in more than half of the culture-positive group and approximately two-thirds of the species identified by the culture-independent methods were not isolated by the "gold standard" culture.

"Previously unrecognized, uncultivated, or difficult-to-cultivate species may play a key role in the initiation of preterm birth," say the researchers


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Y.W. Han, T. Shen, P. Chung, I.A. Buhimschi, C.S. Buhimschi. Uncultivated bacteria as etiologic agents of intra-amniotic inflammation leading to preterm birth. Journal of Clinical Microbiology, 47. 1: 38-47 Jan 2009

Cite This Page:

American Society for Microbiology. "Previously Unidentified Bacteria May Cause Preterm Birth." ScienceDaily. ScienceDaily, 29 January 2009. <www.sciencedaily.com/releases/2009/01/090127090730.htm>.
American Society for Microbiology. (2009, January 29). Previously Unidentified Bacteria May Cause Preterm Birth. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2009/01/090127090730.htm
American Society for Microbiology. "Previously Unidentified Bacteria May Cause Preterm Birth." ScienceDaily. www.sciencedaily.com/releases/2009/01/090127090730.htm (accessed October 22, 2014).

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