Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Katri Kuningas"'
Autor:
Kim Pettersson, Ilari Niemi, Marja-Leena Järvenpää, Noora Ristiniemi, Katri Kuningas, Timo Lövgren, Pirjo Hedberg
Publikováno v:
Clinica Chimica Acta. 414:70-75
Background Cardiac troponins are the preferred and recommended biomarkers of myocardial infarction. Unfortunately, most of the current commercial assays do not meet the guideline recommendations for sensitivity and low-end precision. Therefore, impro
Autor:
Jaana Rosenberg, Telle Ukonaho, Timo Lövgren, Katri Kuningas, Tero Soukka, Terhi Rantanen, Henna Päkkilä
Publikováno v:
Analytical Chemistry. 78:4690-4696
We recently described a novel homogeneous assay principle based on upconversion fluorescence resonance energy transfer (UC-FRET), where an upconverting phosphor (UCP) is utilized as a donor. The UC-FRET has now been applied to a competitive homogeneo
Publikováno v:
Analytical Chemistry. 77:7348-7355
Upconversion photoluminescence can eliminate problems associated with autofluorescence and scattered excitation light in homogeneous luminescence-based assays without need for temporal resolution. We have demonstrated a luminescence resonance energy-
Publikováno v:
Analytica Chimica Acta. 543:130-136
For ultrasensitive bioaffinity assays, the label technology employed should produce intense signals upon specific binding of the label bioconjugate to analyte. Normally, signal levels are improved by optimizing the detection conditions of the label a
Publikováno v:
Analytical Chemistry. 77:2826-2834
A bioaffinity assay is described where anti-Stokes photoluminescence of inorganic lanthanide phosphors and time-resolved fluorescence of lanthanide chelates are measured from a single microtitration well without any disturbance from these label techn
Publikováno v:
Angewandte Chemie. 120:3871-3873
Autor:
Tero Soukka, Katri Kuningas, Telle Ukonaho, Laura Jämsen, Timo Lövgren, Terhi Rantanen, Henna Päkkilä
Publikováno v:
Analytica chimica acta. 596(1)
Research in the field of immunoassays and labels used in the detection has been recently focused on particulate reporters, which possess very high specific activity that excludes the label as a sensitivity limiting factor. However, the large size and
Publikováno v:
Journal of fluorescence. 15(4)
We have characterized commercially available up-converting inorganic lanthanide phosphors for their rare earth composition and photoluminescence properties under infrared laser diode excitation. These up-converting phosphors, in contrast to proprieta
Publikováno v:
Clinical Chemistry. 53:145-146
Many medical conditions are related to alterations in protein or hormone concentrations in blood. These changes are commonly detected with heterogeneous immunoassays that require a separation step before signal measurement. A simple homogeneous assay
Autor:
Katri Kuningas, Johanna Vuojola, Terhi Rantanen, Tero Soukka, Marja-Leena Järvenpää, Riikka Arppe
Publikováno v:
The Analyst. 134:1713
Upconverting phosphors (UCPs) are lanthanide-doped sub-micrometer-sized particles, which produce multiple narrow and well-separated anti-Stokes emission bands at visible wavelengths under infrared excitation (980 nm). The advantageous features of UCP