Rat liver intoxication with CCl4: biochemistry, histology, and mass spectrometry.

This work provides complex characterisation of cirrhotic rat liver tissue induced by carbon tetrachloride using biochemical and histopathological analyses, and also presents a novel approach, secondary ion mass spectrometry (SIMS). According to our knowledge, this is the first report that compares these three different approaches in study of liver damage. We observed increased levels of triacylglycerols and total cholesterol in the liver and decreased levels of those parameters in the plasma.

Surface Nanostructures Composed of Thiolated Cyclodextrin/Au and Fe Species: Gas- and Liquid-Phase Preparation.

Supramolecular surface nanostructures have application potential as functional devices. The complex combination of thiolated cyclodextrin, chemisorbed on an Au surface (Au-S-CD), with deposited Fe species is studied by secondary ion mass spectrometry. The Fe species are prepared by pulsed laser ablation in water and thermal effusion in vacuum.

Fluorescence Dynamics of Monocyclodextrin- and Bis(thiol-cyclodextrin)-Coumarin C153 Complexes.

The solvation and confinement of coumarin C153 within supramolecular host/guest complexes based on β-cyclodextrin (β-CD) and 6-deoxy-6-thio-β-cyclodextrin (β-CD-SH) in water are studied by fluorescence spectroscopy. For β-CD/C153, the 1:1 complex is proposed, and for β-CD-SH/C153 both the 1:1 and 2:1 complexes are believed to be formed. The 2:1 β-CD-SH/C153 complex has an association constant of 4.

Preparation of Cyclodextrin-Iron Species in Water by Laser Ablation: Secondary Ion Mass Spectrometry.

Supramolecular complexes between cyclodextrin and iron species are studied by using secondary ion mass spectrometry. The iron species are prepared by pulsed-laser ablation of bulk iron in water; this gives Fe(+) (56 m/z) and Fex Oy (+) (x, y=1-7) species. Cyclodextrin is added to the water either before or after the laser ablation.