A case study of a 50-year-old man who awakened from aortobifemoral bypass graft surgery with painful burning and numbness of the left foot is reported. Angiography showed embolic occlusion of the left popliteal artery proximal to the knee. Nerve conduction studies performed 1 year after occlusion showed loss or severe reduction of distal left sensory and motor amplitudes, and needle electrode examination showed fibrillation potentials in foot and distal leg muscles. The findings were felt to represent the result of acute ischemic nerve damage in the left leg. The clinical and electromyographic features of this entity will be described and comparisons will be drawn to experimental ischemic neuropathy and diabetic neuropathy.
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http://dx.doi.org/10.1002/mus.880121002 | DOI Listing |
Ann Hepatol
August 2021
Hospital Ramos Mejía, Ciudad de Buenos Aires, Argentina.
The A.A.E.
View Article and Find Full Text PDFJ Chromatogr Sci
March 2007
Universität Hohenheim, Institut für Lebensmittelchemie, D-70593 Stuttgart, Germany.
Gas chromatography columns coated with 10% permethylated beta- and gamma-cyclodextrin in 85% dimethyl-15% diphenyl polysiloxane (beta- and gamma-PMCD, respectively) and 1:1 mixures are prepared and tested with regard to the enantioseparation of chiral chloropesticides. On the columns with the individual O-methylated cyclodextrins (O-tCDs), the enantiomers of aaeeee-hexachlorocyclohexane (alpha-HCH), e-aeee-1,3,4,5,6-pentachlorocyclohex-1-ene (beta-PCCH), and e-aaee-1,3,4,5,6-pentachlorocyclohex-1-ene (gamma-PCCH), cis- and trans-chlordane, and cis-heptachlor epoxide are separated on both columns, with the exception of the latter being separated only on beta-PMCD. On the column coated with 5% beta- and 5% gamma-PMCD, the resulting separation factor (a) is virtually 1/2 of the arithmetric mean of the elution-dependent separation factors on the individual O-tCDs.
View Article and Find Full Text PDFElectrophoresis
July 1998
ITBA, CNR, Milano, Italy.
Two approaches were used to prepare a series of surface-modified capillaries. In the first, a sublayer was formed by coupling gamma-methacryloxypropyltrimethoxysilane to the surface silanol groups forming an SI-O bond; a top layer was then formed by polymerizing acrylamide in the capillary, which reacted with the sublayer. In the second approach, a sublayer was formed by silanol chlorination, followed by Grignard coupling of vinylmagnesium bromide to form an Si-C bond at the surface; a top layer was formed by polymerizing either acrylamide (AA), dimethylacrylamide (DMA), N-acryloylaminoethoxyethanol (AAEE), or N-acryloylaminopropanol (AAP) onto the sublayer.
View Article and Find Full Text PDFElectrophoresis
August 1996
ITBA, CNR, Milano, Italy.
The behavior of N-substituted poly(acrylamides) and of cellulose in the separation of double-stranded DNA by capillary zone electrophoresis (CZE) is evaluated. Contrary to previously held belief, which attributed best separations in poly(acrylamides) to small DNA fragments (typically in the 50-1000 bp size range) and in celluloses to large DNA fragments, we show that also celluloses can achieve fine sieving of short DNA sizes provided they are used at much higher concentrations than previously reported. For example, in the case of hydroxyethylcellulose (HEC), typically used at 0.
View Article and Find Full Text PDFElectrophoresis
March 1995
International Institute for Pure and Applied Chemistry, Area di Ricerca, Trieste, Italy.
Molecular mechanics (for evaluation of total energies of individual structures of monomers and oligomers) and molecular dynamics (for evaluating dynamic dependencies of structural features) were used for obtaining information on some unique chemical behavior of a novel N-substituted acrylamide (N-acryloylaminoethoxyethanol; AAEE) vs. conventional acrylamide and trisacryl (N-acryloyl-2-amino-2-hydroxymethyl-1,3-propane diol, an extremely hydrophilic derivative; Tris-A). As free monomers, Tris-A degrades with zero-order and acrylamide with first-order kinetics, whereas AAEE is highly resistant to hydrolysis.
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