Serial Killer: a biologia por trás do nome

Abstract

A Serial Killer is a criminal that kills over 3 (three) victims within a set period of time and has a modus operandi which allows for their identification. According to psychology, such individuals are clinically perverse and have severe mental disorders, acting in a vicious cycle composed of 6 (six) phases: Aura, Trolling, Wooing, Capture, Murder and Depression; being divided in 4 (four) types: visionary, missionary, hedonistic and power-oriented. Due to these characteristics, this thesis aims to find biological elements capable of identifying or making identification of said people easier. To this end, an exploratory research with a qualitative approach was performed, making use of the bibliographic sources and electronic databases Scielo, PubMed and MEDLINE. As the result of this study, it was verified that certain branches of Biology have indicators capable of helping with the indentification of a Serial Killer. In Neuroanatomy, it's observed that injuries in the limbic system and in the prefrontal cortex can cause personality changes and high levels of aggressiveness, which are diagnosed as neuropsychiatric disorders; In Biochemistry, reports were obtained regarding the involvement of the factors: high traces of heavy metals in the blood, an imbalance in the levels of testosterone, serotonin, and cortisol, the markers dopamine; The branches of Genetics and Molecular Biology have studies that involved the trisomic aneuploidy of the Y chromosome (karyotype notation 47, XXY), variant of the genes HTR2B (serotonina - Lócus 2q37.1), gene MAOA-L (monoamine oxidase A - Lócus Xp11.3 - Xp11.4), and the gene CADHERIN 13-CDH13 (cadherin - Lócus 1q23.3). Reports of some laboratory and image exams capable of being correlated with the variables in Serial Killers were inserted in the thesis, with the goal of strengthening and characterizing the branches involved, thus establishing the possibility of easier identification of potential Serial Killers, reassuring citizens who live in said community.