Developing options for method of assessing the sensitivity of cells intracranial neoplasms to chemotherapeutics in vitro

Background Neuroepithelial tumors are the most intractable to other types of cancer, especially in children and adolescents. One of the ways of increasing the efficacy of this type of tumors, the transition from group serves to a personalized therapy.Objective Develop and test version of the method in vitro evaluation of the sensitivity of neuroepithelial tumors cells to chemotherapy drugs and compare the characteristics of this method with other methods of determining the in vitro chemosensitivity of cells of different histological types of tumors.Subjects and methods For example, the primary cell cultures of intracranial tumors (ependymomas, anaplastic astrocytoma, glioblastoma, neuroblastoma, medulloblastoma, primitive neuroectodermal and atypical rhabdoid teratoid neoplasias) children (90) at the age 7,4 ± 1,1 years, developed and tested uproschnny option the analysis of their individual susceptibility and resistivity to chemotherapeutic drugs. Its essence consist of down to counting chamber Goryaeva proportion of dead (stained with trypan blue) and survivors (transparent) cells after their one-day exposure to cytotoxic drugs in doses that are close to the 50% lethal.Results Based on the gradation index of cytotoxicity of chemotherapeutic drugs and ex vivo evaluation of patients with cytotoxic drugs Supervision, according to accepted formulas were made calculations of sensitivity (67.2%), specificity (56.8%), positive (87.3%) and negative (26.6%) predictive value method.ConclusionThe results were comparable to those of other more labor-intensive methods, opening up the prospect of using this option for some of its technical development