Premature births from inflammation and infection rapidly detected by proteomics technology
A combination of four proteins that result from inflammation and infection and lead to premature birth can be rapidly and accurately detected in the amniotic fluid of pregnant women using proteomics technology, Yale researchers report in two studies in the February issue of British Journal of Obstetrics and Gynecology.
Using proteomics science, the Yale team, in collaboration with two other academic institutions, developed a novel method called MR scoring to discriminate healthy from diseased women in whom preterm delivery is impending and the health of the fetus is in danger. MR scoring relies on identification of a group of proteins that serve as biomarkers characteristic to women who will deliver preterm. The proteins detected are Human neutrophil defensin 1, Human neutrophil defensin 2, Calgranulin C and Calgranulin A.
"We are probably at a turning point in the history of preterm labor diagnosis," said Irina Buhimschi, M.D., research scientist in the Department of Obstetrics & Gynecology and Reproductive Sciences. "While many proteins are present in the amniotic fluid, not all are biomarkers with diagnostic significance."
About 50 percent of women who deliver prematurely have evidence of inflammation in the amniotic fluid. In the current study, Buhimschi and co-authors analyzed stored samples of amniotic fluid from 107 women, some diagnosed with rupture of the membranes or twins and eventually delivered prematurely. The sensitivity and specificity of the MR score in identifying women who had infection and inflammation and delivered earlier reached 100 percent. The four biomarkers are necessary and sufficient to separate between sick and healthy patients.
Buhimschi said the current "gold standard" for infection consists of amniotic fluid culture, which takes days to obtain results. A proteomic diagnostic test for infection and inflammation could probably be performed much faster than the current available laboratory tests. Other current tests have poor sensitivity and specificity and are not available in time for rapid clinical decisions.
The team will present another clinical application of their research (cervical incompetence) during the Plenary Session in February at the 2005 Annual Meeting of the Society for Maternal Fetal Medicine in Reno, Nevada. Other authors include Catalin Buhimschi, M.D. of Yale, Rob Christner of Ciphergen Biosystems and Carl P. Weiner of University of Maryland. The study was funded by the National Institutes of Health and Ciphergen Biosystems.
Karen N. Peart | EurekAlert!
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Mapping the interaction of a single atom with a single photon may inform design of quantum devices
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...