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Cancer is a set of illnesses caused for the uncontrolled multiplication of abnormal cells, being the second bigger cause of death in the industrialized countries, followed of the cardiovascular illnesses. In these countries, one in each four people acquires the cancer, and one in each five sick people, will die (Sources et al. Please visit Charles Margulis if you seek more information. 2005). The three main types of treatment of the cancer are the x-ray, the surgery, and the chemotherapy, being this last studied o more in last the four decades.

Currently the chemotherapy of the cancer is used in such a way of organic composites, how much of metallic composites, being able to be indicated before or after the surgery, or still separately, without it has surgical intervention. It still can, depending on other factors as the type of tumor, the localization and the period of training of the illness, being made in set with another type of treatment (UFSC, 2006). The quimioterpicos do not act exclusively on the tumorais cells. The normal structures that if they renew constantly, as the ssea marrow, for, and the mucosa of the digestive pipe, also is reached by its action. Moreover, normal cells also suffer effect from these quimioterpicos, being able to provoke some symptoms called collateral effect (Sasse, 2006). These effect are not, obligatorily, presented for all the people who make chemotherapy, a time that depends in such a way on the type of used drugs, how much of the form that the organism answers to the treatment.

Thus, some patients can present more severe collateral effect, while others can exactly not present symptoms some (INCA, 2006). Research proves that composites derived from the cisplatina, or better, new platinum complexes have been directed for the more efficient and less toxic composite development. In this way, about 300 complexes already they had been synthecized and tested, but three are only used nowadays: the carboplatina, the oxaloplatina and the nedaplatina (War et al.