L-dopa preloading increases the uptake of borophenylalanine in c6 glioma rat model: a new strategy to improve bnct efficacy

October 6th, 2008 by admin

Purpose: Boron neutron getting therapy (BNCT) is a radiotherapeutic sentience supported on 10B(n,α)7Li reaction, for the communication of cancerous gliomas. One of the important limitations for BNCT power is the depleted intake of 10B nuclei in the ontogeny cells. This impact was aimed at work the ingest of L-DOPA as a reputed attention for 10B-drug 4-dihydroxy-borylphenylalanine (BPA) uptake in the C6-glioma model. The enquiry was prototypal performed in vitro and then long to the birdlike model.Methods and Materials: BPA accruement in C6-glioma cells was assessed using radiowave stuff spectroscopy, with and without L-DOPA preloading. Two L-DOPA birth nowadays (2 and 4 hours) were investigated, and the same personalty on BPA accruement were quantified. C6-glioma cells were also established in the mentality of 32 rats, and ontogeny growth was monitored by attractable kinship imaging. Rats were appointed to digit empiric branches: (1) BPA administration; (2) BPA brass after pretreatment with L-DOPA. All animals were sacrificed, and assessments of BPA concentrations in ontogeny tissue, connatural brain, and murder samples were performed using high-performance liquefied chromatography.Results: L-DOPA preloading evoked a large process of BPA immersion in C6-glioma cells exclusive after a 4-hour incubation. In the birdlike model, L-DOPA pretreatment produced a significantly higher accruement of BPA in ontogeny paper but not in connatural mentality and murder samples.Conclusions: This think suggests the possibleness ingest of L-DOPA as attention for BPA accruement in cancerous gliomas suitable for BNCT. L-DOPA preloading gist is discussed in cost of membrane instrumentation mechanisms. (Source: International Journal of Radiation Oncology * Biology * Physics)

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