Publications by authors named "K Gregorius"

Genes associated with drug resistance of first line drugs for have been identified and characterized of which three genes most commonly associated with drug resistance are chloroquine resistance transporter gene (), multidrug drug resistance gene 1 (), and Kelch protein K13 gene (). Polymorphism in these genes could be used as molecular markers for identifying drug resistant strains. Nucleic acid amplification test (NAAT) along with DNA sequencing is a powerful diagnostic tool that could identify these polymorphisms.

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Background: Continuous glucose monitoring is presently used worldwide. Accuracy, precision, durability, invasiveness, and lack of drift of sensors and lag time are key parameters essential to these systems. This article describes a new online minimally invasive biodegradable microsensor for optical, transcutaneous interrogation, which has at least 14 days of functionality.

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In this report we have evaluated the potential of using fluorescence/Förster resonance energy transfer (FRET) in a competitive immunosensor for continuous monitoring of the carbohydrate hapten maltose. The cyanine dyes Cy5 and Cy5.5 were used as a donor-acceptor pair by conjugation to maltose-labeled bovine serum albumin (BSA) and the monoclonal antibody IgG 39.

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Continuous monitoring of drug levels and endogenous molecules in biological fluids is a developing research area with many applications. One example is the need to improve life for millions of diabetes mellitus patients by continuously monitoring the glucose level. In order to have a dynamic response, the recognition molecule in a continuous sensor should preferentially have a fast dissociation rate and a dissociation constant in the millimolar range.

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To create a human therapeutic vaccine able to circumvent self-tolerance against tumor necrosis factor (TNF) alpha, foreign T helper epitopes were inserted into human TNFalpha, with minimal effect on the native three-dimensional structure. TNFalpha variants were screened for solubility, structural stability, biological activity, and after immunization, for eliciting inhibitory antibodies. The longest and most flexible loop in TNFalpha, also designated loop 3, is the only region that is not involved in intra- or intermolecular interactions and therefore constitute an attractive insertion site.

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