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Verification of microbial ethanol formation in humans by examination of postmortem indoleamine metabolites.
(2004)
Toxicological examination of fatal aviation accident victims routinely includes analysis of ethanol levels. Two distinct questions immediately arise when considering such analyses. The first is, can we stop ethanol production ...
Structural, protonation, and complexation studies of ionophores A23187, 4-ClA23187, and 23,24-Br(2)A23187.
(2006)
A23187 is a carboxylic acid polyether ionophore best known for transporting calcium through membranes. However, it has been shown that it transports Zn 2+, Cd2+, and Mn2+ more selectively than Ca2+. Derivatives of A23187 ...
Studies of the complexation reactions of polyether ionophore antibiotics nigericin and salinomycin with lead(II), zinc, calcium, magnesium, sodium and potassium cations.
(2005)
CD studies in 80% methanol-water indicate that Pb2+ forms 1:1 complexes almost quantitatively with monensin, nigericin, narasin, maduramicin, and salinomycin. UV-Vis titrations in 80% methanol-water showed the same result ...
Single-molecule spectroscopic investigation of the influence that charge-charge interactions, solvation, and confinement have on guest molecule rotational mobility and photostability within silica sol-gel host matrices.
(2006)
To investigate physical immobilization further, guest behavior was monitored within the more highly branched silica nanoparticle matrix, when covalently bonded to silica nanoparticles, and within pores templated by gold ...
Studies of the complexation reactions of polyether ionophore antibiotics monensin A and lasalocid A with lead(II), zinc, calcium and sodium cations.
(2000)
Lead-ionophore complexes of the form PbLX and PbL2 (L = monensin A or lasalocid A; X- = anion) were isolated and characterized by elemental analysis (X = Cl--) and ESI-MS (X = Cl --, NO3, CH3COO--). Changes in the UV-Vis ...
Investigation of matrix interferences in quantitative liquid chromatography-electrospray ionization mass spectrometry analysis of biological samples.
(2007)
The mechanisms by which endogenous GPCho lipids interfere with analyte electrospray ionization were investigated with the aid of a partition equilibrium mathematical model. A linear equation, which was derived by modifying ...
Synthesis, structure, and solution properties of benzoannelated cryptands.
(2006)
Cryptands An2.2.1 and An2.2.2 were synthesized by high dilution techniques. Attempts to produce An3.1.1 gave primarily the 2 + 2 addition product An3.1.1.3. X-ray crystallography, ESI-MS, and NMR techniques were used to ...
Neurochemical and immunohistochemical effects induced by the 1-methyl-4-phenylpyridinium animal model of Parkinson's disease: An in vivo microdialysis investigation in freely moving rats.
(2003)
Parkinson's disease (PD) is a neurodegenerative disorder which afflicts more than 1 million Americans with an estimated 50,000 new diagnoses each year. 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) causes parkinsonian ...
Deconvolution and quantitation of severely overlapped chromatographic peaks using high performance liquid chromatography with multi-channel electrochemical detection.
(2005)
The chemometric approaches employing two-dimensional time-response information were a bit more reliable in providing accurate outcomes. Each of the PCR, PLS, and SIMPLS approaches accurately predicted with 95% certainty ...