Evelyne Baguet

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The conversion of nicotine to nornicotine by Nicotiana plumbaginifolia Viv. cells was investigated by analysing the redistribution of label during feeding experiments with (R,S)-[2H-methyl]nicotine, (R,S)-[13C-methyl]nicotine and (R,S)-[14C-methyl]nicotine, and the results show that the N-methyl group of nicotine can be recycled into primary metabolism.(More)
Quantitative analysis by (1)H NMR is often hampered by heavily overlapping signals that may occur for complex mixtures, especially those containing similar compounds. Bidimensional homonuclear NMR spectroscopy can overcome this difficulty. A thorough review of acquisition and post-processing parameters was carried out to obtain accurate and precise,(More)
Triple-quantum filtering NMR sequences were used to study the multiexponential relaxation behaviour of H2 17O in the presence of hen egg white lysozyme. By this means, the fraction and the correlation time of water were determined in slow motion, as well as the relaxation time of water in the extreme narrowing limit. The small number of water molecules in(More)
Quantitative 2H NMR spectroscopy has been used to determine the natural abundance site-specific 2H isotopic content of 6,7-dihydrocapsaicin (1) and capsaicin (2). Prior to analysis, the fatty acyl moieties were released as methyl 8-methylnonanoate (3) and methyl E-8-methylnon-6-enoate (4), respectively. A marked and similar nonstatistical isotopic(More)
The inverse-gated-decoupling sequence enables quantitative (1)H decoupled (13)C spectra to be obtained. We modified this sequence so as to obtain the same result in less time for molecules containing carbons with various relaxation properties. For that, we determined the optimal (13)C longitudinal-magnetization initial value for a faster relaxation while(More)
OBJECTIVE To evaluate the long-term outcome of greater saphenous vein (GSV) infrapopliteal revascularisation in a single centre over a 10 year period. MATERIAL AND METHODS Fourty-one variables relating to a consecutive series of 90 crural artery GSV(76% in situ) bypasses in 81 patients (1990-2000) were analysed. The mean age of the 47 men and 34 women was(More)
Structural features of galanthamine and codeine, two allosteric potentiating ligands of nicotinic acetylcholine receptors (nAChRs), have been investigated through experimental studies in solution by FTIR and NMR spectroscopy and by quantum chemical calculations in the isolated state. The infrared spectra accumulated in solvents of various polarities show(More)
It is shown theoretically that the inversion-transfer experiment used to estimate the value of unidirectional rate constants in chemical exchange systems can be performed faster via a reduction of the recovery delay. The chemical exchange rate constants can then be estimated accurately with a formula close to that of standard inversion transfer and easy to(More)
Limb threatening ischemia is a challenge for the vascular surgeon. Recent progress in revascularization procedures allow to minimize the primary amputation rate in the management of chronic critical limb ischemia. The authors discuss the prevalence and causes of chronic critical limb ischemia, with a special interest for diabetic arteriopathy. The technique(More)
We report the case of an ascending aortic aneurysm involving the aortic root, with a functionally competent bicuspid aortic valve, treated by the David's operation. This operation allows to fix the aortic root pathology, whilst preserving the native aortic valve. The technical aspects, surgical indications, and potential benefits of this operation are(More)
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