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Validation analytique du dosage de la cyclophosphamide dans les urines par chromatographie liquide couplée à un double spectromètre de masse dans un contexte de monitoring d'exposition professionnelle
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Year: 2002 Publisher: Bruxelles: UCL,

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The cyclophosphamide is al molecule used in the treatment of many cancers, but is has also immunosuppressant properties and it is an alkylated agent.
It’s metabolised through the liver by the cytochrome P450 2B6. The active metabolite is the phosphoramide mustard. The acrolein is the toxic metabolite and may be responsible for the hemorrhagic cystitis.
In absence of strict precautions, handling of such products by hospital staff may be dangerous for their health. That’s the reason why it’s so important to be able to quantify cyclophosphamide concentration in the urines of those people.
The determination of this substance is done by LC MS/MS. The sensitivity of the assay is 0.05 ng/ml (LOD of 0.05 ng/ml and a LOQ of 0.1 ng/ml)
After 3.50 min, the sample is analysed and the result is given in ng/ml.
Once the determination of cyclophosphamide has been validated, we were able to use the assay in urines from the workers of the pharmacy of St-Luc hospital.
We have also compared our results with those obtained from the reference laboratory (Holland), and we have assessed the preanalytical conditions.
Most of the results were negative (< 0.05 ng/ml) suggesting that the air extraction system and protective measures are efficious La cytophosphamide est une molécule utilisée dans le traitement de nombreux cancers mais elle a également des propriétés immunosuppressives et c’est un agent alkylant.
Elle est métabolisée au niveau du foie par le cytochrome P450 2B6. Le métabolite actif est la moutarde phosphoramide. L’acroléine est un métabolite toxique qui peut être responsable de l’apparition d’une cystite hémorragique.
Une manipulation imprudente, par le personnel hospitalier, de tels produits peut représenter un risque pour leur santé. C’est pourquoi, il est important de pouvoir déterminer avec précision la présence ou non de cyclophosphamide dans les urines de ces personnes.
Le dosage de la cyclophosphamide se fait par LC MS/MS. La sensibilité de cette méthode est de 0.05 ng/ml (LOD de 0.05 ng/ml et une LOQ de 0.1 ng/ml).
L’échantillon est analysé en 3.50 min et le résultat est directement donné en ng/ml. Une fois le dosage de la cyclophosphamide validé, nous avons pu réaliser des dosages sur des urines provenant du personnel de la pharmacie des cliniques universitaires St-Luc.
Nous avons également comparé nos résultats avec ceux du centre international de référence (Hollande) ; ainsi que contrôlé les conditions préanalytiques. La plupart de ces dosages étaient négatifs (<0.05 ng/ml-, ce qui nous autorise à penser que les systèmes d’aération ainsi que les mesures de protection sont efficaces.

Calcitonins : physiological and pharmacological aspects. Mafosfamide : a derivative of 4-hydroxycyclophoshamide. Enzymatic DNA methylation
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ISBN: 3540510974 Year: 1989 Publisher: Berlin : Springer,

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Progress in medicinal chemistry.
Authors: ---
ISBN: 0444804153 Year: 1982 Publisher: Amsterdam : Elsevier,

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Dissertation
Autologous bone marrow transplantation : clinical results and immune recovery in relation to cytomegalovirus infection
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Year: 1985 Publisher: Dordrecht ICG printing

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Dissertation
Experimental allergic contact dermatitis : studies on regulatory mechanisms in the guinea pig
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ISBN: 9062565085 Year: 1987 Publisher: Amsterdam Free university press

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Immunosuppressive agents.
ISBN: 8716091892 Year: 1982 Publisher: Copenhagen : E. Munksgaard,

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The normal mouse urinary bladder reservoir function evaluated by repeated cystometries : early and late changes after irradiation alone and irradiation combined with cis-diaminedichloroplatinum (II) or cyclophosphamide
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Year: 1994 Publisher: Oslo Scandinavian university press

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Dissertation
High-dose chemotherapy and autologous bone marrow transplantation for solid tumors
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Year: 1989 Publisher: Groningen Dijkhuizen en van Zanten

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Reviews on treatment of advanced breast cancer : a clinical discussion : proceedings of a symposium held in Tucson, Arizona, 1 April 1979.
Year: 1980 Publisher: Amsterdam : Elsevier Science Publishers, Excerpta Medica Medical Communications Division,

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The Immunobiology of HLA-Haploidentical Hematopoietic Cell Transplantation
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Year: 2020 Publisher: Frontiers Media SA

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

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