Results 131 to 140 of about 846 (166)

Screening, confirmation and quantification of boldenone sulfate in equine urine after administration of boldenone undecylenate (Equipoise™)

Journal of Chromatography B: Biomedical Sciences and Applications, 1988
Methods for screening by thin-layer chromatography, quantification by high-performance liquid chromatography with ultraviolet detection and confirmation by gas chromatography-mass spectrometry of boldenone sulfate in equine urine after administration of boldenone undecylenate (Equipoise) are presented.
L O, Weidolf, T M, Chichila, J D, Henion
openaire   +2 more sources

Determination of α- and β-boldenone sulfate, glucuronide and free forms, and androstadienedione in bovine urine using immunoaffinity columns clean-up and liquid chromatography tandem mass spectrometry analysis

Talanta, 2015
The debate about the origins of boldenone in bovine urine is ongoing for two decades in Europe. Despite the fact that its use as a growth promoter has been banned in the European Union (EU) since 1981, its detection in bovine urine, in the form of α ...
Sara Panseri, Radmila Pavlovic, Francesco Arioli   +2 more
exaly   +2 more sources

Development of a method which discriminates between endogenous and exogenous β-boldenone

Analytica Chimica Acta, 2007
One potential explanation for the presence of beta-boldenone in calf urine is contamination of the sample with feces containing beta-boldenone. It has been demonstrated that after oral and intramuscular administration of beta-boldenone esters, several metabolites are formed and excreted in urine.
Marco H Blokland, R W Stephany, S S Sterk   +2 more
exaly   +4 more sources

Excretion of the anabolic steroid boldenone by racing pigeons

American Journal of Veterinary Research, 1997
Abstract Objectives To detect the anabolic steroid boldenone and to monitor its elimination in the droppings (hereafter referred to as feces) of pigeons treated with the drug. Animals 8 female pigeons (“Texas” race, 500 ± 20 g). Procedure 4 pigeons were given boldenone-17-undecylenate (10 mg/kg of body weight, IM).
H W, Hagedorn, H, Zankl, C, Grund, R, Schulz   +3 more
openaire   +2 more sources

Screen-Printed Carbon Electrodes for the Detection of Boldenone

Applied Mechanics and Materials, 2014
Boldenone (androsta-1,4-dien-17-ol-3-one), an androgenic anabolic steroid (AAS), is intensively used for growth promoting purposes in animals for meat production and as a performance enhancer in athletics. Its use is prohibited either in animals intended for human consumption or directly for humans, as most of the anabolic steroids are completely ...
Rameeta Kaur, Aamir Amanat Ali Khan, John Ojur Dennis, Mohd Azmuddin Abdullah   +3 more
openaire   +1 more source

Physiological and biochemical changes after boldenone injection in adult rabbits

Toxicology and Industrial Health, 2013
Boldenone (BOL) is an androgenic steroid that improves the growth and food conversion in food-producing animals. In most countries worldwide, this anabolic steroid is forbidden for human uses and meat production as it was developed for veterinary use. Recently, BOL is used by bodybuilders in both off season and pre-contest, where it is well known for ...
Ehab, Tousson, Mostafa, El-Moghazy, Ahmed, Massoud, Afaf, El-Atrash, Osama, Sweef, Amani, Akel   +5 more
openaire   +2 more sources

Screening of boldenone and methylboldenone in bovine urine using disposable electrochemical immunosensors

Steroids, 2006
Electrochemical based immunosensors for the detection of boldenone and methylboldenone in bovine urine were described in this paper. The immunosensors were fabricated by immobilizing boldenone-bovine serum albumin conjugate on the surface of screen-printed electrodes (SPEs), and followed by the competition between the free analyte and coating conjugate
Huihui Lu, George G. Guilbault
exaly   +3 more sources

Boldenone and related hormones quantification by liquid chromatography–mass spectrometry in urine and faeces after calf administration of boldenone undecanoate

Analytica Chimica Acta, 2005
Abstract A 6-month calf was treated with 1 mg kg−1 wet weight of 17-β-boldenone undecanoate and urine and faeces were collected for a period of 30 days after the treatment to follow the depletion of the different substances related to boldenone. Hair was collected for just a few days.
Emanuele Sangiorgi, Valentina Polignano, Silvia Gardini   +2 more
exaly   +2 more sources

Confirmatory analysis of 17β-boldenone, 17α-boldenone and androsta-1,4-diene-3,17-dione in bovine urine by liquid chromatography–tandem mass spectrometry

Journal of Chromatography B, 2003
A sensitive and selective liquid chromatography-tandem mass spectrometry (LC-MS-MS) method for confirmatory analysis of 17beta-boldenone (17beta-BOL), 17alpha-boldenone (17alpha-BOL) and androsta-1,4-diene-3,17-dione (ADD) in bovine urine was developed. [2H(2)]17beta-Testosterone (17beta-T-d(2)) was used as the internal standard.
Rosa, Draisci, Luca, Palleschi, Emanuele, Ferretti, Luca, Lucentini, Fernanda, delli Quadri   +4 more
openaire   +2 more sources

Effects of the anablolic steroid, boldenone undecylenate, on certain reproductive parameters in bulls

Theriogenology, 1991
A total of 17 bulls was used to study the effects of boldenone undecylenate on growth and semen characteristics in beef bulls. In trial 1 nine mature mixed-breed beef bulls with satisfactory semen quality were divided into two groups. Group I (n = 5) received boldenone undecylenate (1.1 mg/kg) at 21 d intervals for a total of seven treatments (147 d ...
D F, Wolfe, R L, Carson, P W, Mysinger, B S, Duran, H S, Rahe   +4 more
openaire   +2 more sources