L Leyssens
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Explore the profile of L Leyssens including associated specialties, affiliations and a list of published articles.
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16
Citations
10
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Recent Articles
1.
Van Puymbroeck M, Kuilman M, Maas R, Witkamp R, Leyssens L, Vanderzande D, et al.
Analyst
. 1999 Aug;
123(12):2681-86.
PMID: 10435323
17 alpha-Boldenone (17 alpha-BOL) and/or 17 beta-boldenone (17 beta-BOL) appear occasionally in fecal matter of cattle. In addition to 17 alpha-BOL, a whole array of boldenone related substances can be...
2.
Leyssens L, Van Puymbroeck M, Raus J
Analyst
. 1999 Aug;
123(12):2643-4.
PMID: 10435316
Aqueous solutions containing methandriol (MAD) were incubated with Succus helix pomatia (SHP) or beta-glucuronidase from Escherichia coli (EC). SHP, used for enzymatic hydrolysis of urinary steroid conjugates for residue analysis...
3.
Hamoir T, Courtheyn D, De Brabander H, Delahaut P, Leyssens L, Pottie G
Analyst
. 1999 Aug;
123(12):2621-4.
PMID: 10435311
Within several regional field laboratories and the national reference laboratory a harmonised methodology for the analysis of anabolic residues in faecal samples was developed. The method consists of a liquid-liquid...
4.
Van Puymbroeck M, Kuilman M, Maas R, Witkamp R, Leyssens L, Vanderzande D, et al.
Analyst
. 1999 Aug;
123(12):2453-6.
PMID: 10435277
Current veterinary residue analysis mainly focuses on the monitoring of residues of the administered parent compound. However, it is possible that larger amounts of metabolites are excreted and that they...
5.
Van Puymbroeck M, Leyssens L, Vanderzande D, Gelan J, Raus J
Analyst
. 1999 Aug;
123(12):2449-52.
PMID: 10435276
In Belgium, to control the abuse of anabolic steroids in cattle, urine samples have been gradually replaced by feces samples, because the latter can be obtained more easily from living...
6.
Van Puymbroeck M, Kuilman M, Maas R, Witkamp R, Leyssens L, van Miert A, et al.
J Chromatogr B Biomed Sci Appl
. 1999 Jul;
728(2):217-32.
PMID: 10406207
The metabolism of the illegal growth promoter ethylestrenol (EES) was evaluated in bovine liver cells and subcellular fractions of bovine liver preparations. Incubations with bovine microsomal preparations revealed that EES...
7.
Beta-agonists in animal feed. IV: Intercomparison study of a candidate reference confirmatory method
Leyssens L, Noben J, Courtheyn D, Boenke A
Food Addit Contam
. 1996 Nov;
13(8):883-95.
PMID: 8950110
The objective of this intercomparison study was to evaluate the qualitative aspects and the interlaboratory performance of the method selected to be recommended as the official Community reference confirmatory method...
8.
Leyssens L, Courtheyn D, Schilt R, Berthoz Y, Moermans R, Boenke A
Food Addit Contam
. 1996 Oct;
13(7):795-810.
PMID: 8885320
This study represents the second part of an interlaboratory study intended to develop an official modular Community confirmatory method for the detection of beta-agonists in animal feed. Homogeneous pools of...
9.
Leyssens L, Royackers E, Gielen B, Missotten M, Schoofs J, Czech J, et al.
J Chromatogr B Biomed Appl
. 1994 Mar;
654(1):43-54.
PMID: 8004242
Seven metabolites of 4-chlorotestosterone acetate were identified in urine of cattle that received a single injection of the drug. The steroids were isolated by means of a series of clean-up...
10.
Hendriks L, Gielen B, Leyssens L, Raus J
Vet Rec
. 1994 Feb;
134(8):192-3.
PMID: 8171795
No abstract available.