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Author |
Dirikolu, L.; Lehner, A.F.; Karpiesiuk, W.; Hughes, C.; Woods, W.E.; Boyles, J.; Harkins, J.D.; Troppmann, A.; Tobin, T. |
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Title |
Detection, quantification, metabolism, and behavioral effects of selegiline in horses |
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Journal Article |
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Year |
2003 |
Publication  |
Veterinary Therapeutics : Research in Applied Veterinary Medicine |
Abbreviated Journal |
Vet Ther |
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Volume |
4 |
Issue |
3 |
Pages |
257-268 |
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Keywords |
Administration, Oral; Animals; Behavior, Animal/drug effects; Female; Horses/*metabolism; Mass Spectrometry/veterinary; Monoamine Oxidase Inhibitors/administration & dosage/blood/*pharmacokinetics/pharmacology/urine; Selegiline/administration & dosage/blood/*pharmacokinetics/pharmacology/urine; Substance Abuse Detection/veterinary |
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Abstract |
Selegiline ([R]-[-]N,alpha-dimethyl-N-2- propynylphenethylamine or l-deprenyl), an irreversible inhibitor of monoamine oxidase, is a classic antidyskinetic and antiparkinsonian agent widely used in human medicine both as monotherapy and as an adjunct to levodopa therapy. Selegiline is classified by the Association of Racing Commissioners International (ARCI) as a class 2 agent, and is considered to have high abuse potential in racing horses. A highly sensitive LC/MS/MS quantitative analytical method has been developed for selegiline and its potential metabolites amphetamine and methamphetamine using commercially available deuterated analogs of these compounds as internal standards. After administering 40 mg of selegiline orally to two horses, relatively low (<60 ng/ml) concentrations of parent selegiline, amphetamine, and methamphetamine were recovered in urine samples. However, relatively high urinary concentrations of another selegiline metabolite were found, tentatively identified as N- desmethylselegiline. This metabolite was synthesized and found to be indistinguishable from the new metabolite recovered from horse urine, thereby confirming the chemical identity of the equine metabolite. Additionally, analysis of urine samples from four horses dosed with 50 mg of selegiline confirmed that N-desmethylselegiline is the major urinary metabolite of selegiline in horses. In related behavior studies, p.o. and i.v. administration of 30 mg of selegiline produced no significant changes in either locomotor activities or heart rates. |
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Address |
Department of Biomedical Sciences, College of Veterinary Medicine, Nursing and Allied Health, Tuskegee University, Tuskegee, AL 36088, USA |
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English |
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ISSN |
1528-3593 |
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Notes |
PMID:15136987 |
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no |
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Call Number |
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Serial |
1901 |
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Author |
Weik, H.; Lingk, W.; Altmann, H.J. |
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Title |
[Behavior of individual fatty acids during in-vitro lipolysis and resynthesis in equine depot fat] |
Type |
Journal Article |
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Year |
1972 |
Publication |
Zentralblatt fur Veterinarmedizin. Reihe A |
Abbreviated Journal |
Zentralbl Veterinarmed A |
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Volume |
19 |
Issue |
8 |
Pages |
677-685 |
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Keywords |
Adipose Tissue/*metabolism; Animals; Fatty Acids/*metabolism; Fatty Acids, Nonesterified/metabolism; Horses/*metabolism; Triglycerides/metabolism |
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German |
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Original Title |
Das Verhalten der einzelnen Fettsauren wahrend der Lipolyse und Resynthese im Pferdepotfett in vitro |
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0514-7158 |
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Notes |
PMID:4628723 |
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no |
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Call Number |
refbase @ user @ |
Serial |
131 |
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Author |
Weik, H.; Altmann, H.J. |
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Title |
[Behavior of blood lipids during fasting in the horse] |
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Journal Article |
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Year |
1971 |
Publication |
Zentralblatt fur Veterinarmedizin. Reihe A |
Abbreviated Journal |
Zentralbl Veterinarmed A |
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Volume |
18 |
Issue |
2 |
Pages |
131-138 |
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Keywords |
Adipose Tissue/metabolism; Animals; Chromatography, Gas; Fasting/*veterinary; Fatty Acids/blood/metabolism; Fatty Acids, Nonesterified/blood; Horses/*metabolism; Lipids/*blood |
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German |
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Original Title |
Das Verhalten einiger Blutlipide wahrend des Hungerns beim Pferd |
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0514-7158 |
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Notes |
PMID:4995835 |
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Call Number |
refbase @ user @ |
Serial |
134 |
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