Main Menu

Left ventricular outflow tract obstruction is a life-threatening complication of transcatheter mitral valve replacement caused by septal displacement of the anterior mitral leaflet (AML). The AML is a mobile structure that physically separates inflow and outflow zones of the left ventricle. Preserving the AML during surgical mitral valve replacement can cause left ventricular outflow tract obstruction, either when the prosthesis struts protrude into the left ventricular outflow tract or when along redundant anterior leaflet prolapses into the left ventrical outflow tract.

The molecular imaging technique of positron emission tomography (PET) is an increasingly important tool in biomedical research and in drug discovery and development. Many small molecule drugs and potential PET radiotracers carry trifluoromethyl (CF₃) groups. Because CF₃ groups are generally considered to be metabolically stable, there is a strong interest in developing drugs with these groups.

The simultaneous concentration and recovery of microbes in drinking water is important for responding to potential water-related events such as pathogen contamination or bioterrorism and could be a cost-effective technique for routine monitoring of drinking water quality. Scientists at the CDC have combined two techniques, ultrafiltration (UF) and insulator-based dielectrophoresis (iDEP) in series, to achieve significant concentration of microbes and pathogens for analysis.

A major challenge to sequencing eukaryotic parasites present in clinical samples is the abundance of ‘contaminating’ human DNA in samples. CDC has developed a method to reduce host DNA from biological samples prior to sequencing of the 18s gene, a universal gene which allows scientists to detect any parasitic organism by one DNA test.

Syphilis, a genital ulcerative disease caused by the bacterium Treponema pallidum, is associated with significant complications if left untreated. Syphilis rates in the United States have been increasing.

Scrub typhus is a bacterial disease caused by Orientia tsutsugamushi (O. tsutsugamushi or Ots) that is spread to people through bites of infected chiggers (larval mites). The most common symptoms can include fever, headache, body aches, and sometimes rash. Severe illness can lead to organ failure and bleeding which can be fatal if left untreated. Most cases of scrub typhus occur in Asia Pacific countries, however, recent reports document establishment in the Arabian Peninsula, Chile, and possibly Kenya.

There is an acute deficit in chemical synthesis with respect to benchtop tools that are specifically designed to address the capability and efficiency of certain key aspects of chemical synthesis, namely reaction preparation, product isolation, and solvent removal. Chemical research currently relies upon a variety of devices that function in a manner that is disconnected, as well as difficult to integrate and automate; collectively, these device challenges hinder the efficient isolation and purification of desired chemical synthesis products.

This invention relates to two devices that reliably, sensitively, and accurately measures force during handgrip contraction and subsequent relaxation. A delayed relaxation after a sustained and forceful handgrip is a cardinal symptom of myotonic dystrophies (DM). This delayed relaxation, handgrip myotonia, may be a therapeutic response biomarker in clinical trials.

This invention is a novel statistical method for automatically detecting lesions in cross-sectional brain magnetic resonance imaging (MRI) studies. OASIS uses multimodal MRI from one image acquisition session and produces voxel-level probability maps of the brain that quantifies the likelihood that each voxel is part of a lesion. Binary lesion segmentations are created from these probability maps using a validated population-level threshold. In this application, fluid attenuated inversion recovery (FLAIR), proton density (PD), T2-weighted, and Tl-weighted volumes were used.

This technology includes a device to allow chemists to process crude reaction mixtures with the objective of isolating the desired product from reaction by-products and other solvents and impurities to provide material of adequate quality and purity to be submitted for further chromatographic purification or used directly in subsequent reactions. The instrument serves in facilitating the integration of a close-to-universal set of isolation techniques collectively referred to as “solid-phase extraction” (SPE) methods.