Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) is a simple and fast technique for the analysis of large biomolecules but is not suitable for the detection of low molecular weight molecules and compounds, such as flavonoids and phenylpropanoids, mainly due to the lack of an appropriate matrix. Flavonoids and phenylpropanoids, such as coumarin and its ...

[1] Aerosol samples were collected in Zurich, Switzerland, at an urban background site and were analyzed with size exclusion chromatography (SEC) and laser/desorption ionization mass spectrometry (LDI-MS) for water-soluble organic compounds with high molecular weight. Daily samples were collected during two campaigns in winter and summer, for 1 month each. The concentration of high-molecular-we...

PURPOSE The well-known translocations identified in MALT lymphomas include t(11;18)/API2-MALT1, t(1;14)/IGH-BCL10, and t(14;18)/IGH-MALT1. Molecular investigations have suggested that these three disparate translocations affect a common pathway, resulting in the constitutive activation of nuclear factor-kappaB. However, the vast majority of MALT lymphomas are negative for any of the above-menti...

We have developed a simple, rapid, high-throughput cancer diagnosis system using functional nanoparticles (NPs) consisting of poly(catechin) capped-gold NPs (Au@PC NPs) and smaller nucleolin-binding aptamer (AS1411) conjugated gold NPs (AS1411-Au NPs). The AS1411-Au NPs/Au@PC NP is used as a targeting agent in laser desorption/ionization mass spectrometry (LDI-MS)-based tumor tissue imaging. Se...

The westernmost Mediterranean is one of the most sensitive areas to global climate change and high sedimentation rates allow recording frequency variability. We present a high-resolution paleotemperature reconstruction over last 35 kyr using, for first time, four independent organic sea surface temperature (SST) proxies (UK'37, TEXH86, RI-OH' LDI) based on alkenones, (hydroxy) isoprenoid GDGTs,...

BACKGROUND Laser-Doppler imaging (LDI) of cutaneous blood flow is beginning to be used by burn surgeons to predict the healing time of burn wounds; predicted healing time is used to determine wound treatment as either dressings or surgery. In this paper, we do a statistical analysis of the performance of the technique. METHODS We used data from a study carried out by five burn centers: LDI wa...

Kidney cancer is one of the most frequently diagnosed cancers urinary tract in world. Despite significant advances kidney treatment, no urine specific biomarker currently used to guide therapeutic interventions. In an effort address this knowledge gap, metabolic profiling samples from 50 patients with and healthy volunteers was undertaken using high-resolution proton nuclear magnetic resonance ...

Background: Laser-Doppler imaging (LDI) of cutaneous blood flow is beginning to be used by burn surgeons to predict the healing time of burn wounds; predicted healing time is used to determine wound treatment as either dressings or surgery. In this paper, we do a statistical analysis of the performance of the technique. Methods: We used data from a study carried out by five burn centers: LDI wa...

Recent mechanistic studies have indicated that at subwavelength post diameters and selected aspect ratios nanopost arrays (NAPA) exhibit ion yield resonances ( Walker , B. N. , Stolee , J. A. , Pickel , D. L. , Retterer , S. T. , and Vertes , A. J. Phys. Chem. C 2010 , 114 , 4835 - 4840 ). In this contribution we explore ...

Helianthus annuus (sunflower) displays non-glandular trichomes (NGT), capitate glandular trichomes (CGT), and linear glandular trichomes (LGT), which reveal different chemical compositions and locations in different plant tissues. With matrix-assisted laser desorption/ionization (MALDI) and laser desorption/ionization (LDI) mass spectrometry imaging (MSI) techniques, efficient methods were deve...