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Electrochemical impedance spectroscopy (EIS) is a highly effective technique for studying the surface of electrodes in great detail. EIS-based electrochemical sensors have been widely reported, which measure the charge transfer resistance (R) of redox probes on electrode surfaces to monitor the binding of target molecules. One of the protective drugs against hemorrhagic cystitis caused by oxazaphosphorine chemotherapy drugs such as ifosfamide, cyclophosphamide and trophosphamide is Mesna (sodium salt of 2-mercaptoethanesulfonate).

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Background: Glufosfamide (β-D-glucosylisophosphoramide mustard, GLU) is an alkylating cytotoxic agent in which ifosforamide mustard (IPM) is glycosidically linked to the β-D-glucose molecule. GLU exerted its cytotoxic effect as a targeted chemotherapy. Although, its cytotoxic efficacy in a number of cell lines, there were no experimental or clinical data available on the oncolytic effect of oxazaphosphorine drugs in hepatocellular carcinoma.

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Oxazaphosphorines combined with immune checkpoint blockers: dose-dependent tuning between immune and cytotoxic effects.

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Molecular Radiotherapy and Innovative Therapeutics, Unité Mixte de Recherche 1030 INSERM, Gustave Roussy, F-94805, Villejuif, France

Background: Oxazaphosphorines (cyclophosphamide (CPA), ifosfamide (IFO)) are major alkylating agents of polychemotherapy protocols but limiting their toxicity and increasing their efficacy could be of major interest. Oxazaphosphorines are prodrugs that require an activation by cytochrome P450 (CYP). CPA is mainly metabolized (>80%) to phosphoramide mustard while only 10%-50% of IFO is transformed in the alkylating entity, isophosphoramide mustard and 50%-90% of IFO release chloroacetaldehyde, a nephrotoxic and neurotoxic metabolite.

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Background And Aims: Cyclophosphamide (CPh) is a frequently used drug, in human and animals for its immunosuppressive and anticancer potential. However, it is metabolized by the liver yielding damaging toxicants (to the liver itself and other non-target vital organs) via oxidative stress, apoptosis induction and finally necrosis. Since there is no escaping of using such harmful medications, we focused on alleviating its side-effects.

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Purpose: The introduction of immunochemotherapy has led to a significant improvement in treatment results and prognosis of diffuse large B-cell non-Hodgkins lymphoma (DLBCL) both at initial diagnosis and in relapse. Trofosfamide, an oxazaphosphorine derivative, has been utilized as alternative treatment option for patients with lymphoproliferative diseases unsuitable for conventional chemotherapy agents and protocols because of age, comorbidity, or poor performance score. While data on the activity and safety of single-agent trofosfamide have been published, the potential value of this agent in immunochemotherapy in combination with anti-CD20 antibodies such as rituximab has not been investigated to our knowledge.

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