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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Genotoxicidade da cocaína

Authors: Villadeamigo Zambrano, María;

Genotoxicidade da cocaína

Abstract

A cocaína é uma droga de abuso potente, sendo a quarta mais consumida no mundo, constituindo um grave problema para a saúde pública. São amplamente conhecidos os efeitos neurotóxicos produzidos pelo consumo desta droga de abuso. No entanto, o mesmo não podemos afirmar relativamente à sua potencial genotoxicidade. Atualmente existe um grande interesse no estudo da cancerigénese associada ao consumo de diferentes substâncias tóxicas ilícitas, tendo vindo a aumentar o número de estudos referentes às consequências a longo prazo do consumo de drogas. O objetivo desta revisão de conjunto foi analisar o estado atual do conhecimento associado à toxicidade genética induzida pela cocaína, com base nos estudos dos níveis de biomarcadores de efeitos genotóxicos. Os estudos revistos focaram na relação entre o consumo de cocaína, nas suas diferentes formas de apresentação, e o aumento da frequência de alterações cromossómicas e de outros biomarcadores de lesão de DNA, quer em animais quer em humanos. Os resultados obtidos na investigação fornecem evidência para a associação entre o consumo de cocaína e a presença de alterações morfológicas nos núcleos celulares, nomeadamente cariólise, cariorrexe e picnose, que precedem ou são indicadores de necrose, bem como a presença de biomarcadores de lesão do DNA, principalmente micronúcleos, protusões nucleares e pontes nucleoplásmicas.

Cocaine is a strong addictive drug, being the fourth most consumed in the world and a serious problem to overall public health. It is widely known the neurotoxical effects elicited by the consumption of this drug of abuse. However, information on the genotoxicity potential of this drug is still incomplete. In addition, there is currently an increasing interest in studying the carcinogenic burden associated with the consumption of different toxic illicit substances, being this subject the focus of numerous studies addressing the long term consequences of drug consumption. The overall objective of this review is to analyze and review the current situation, and to estimate the consequences of cocaine at a genotoxicity biomarker level and its effects. The assays revised addressed the relationship between the consumption of cocaine, in its different forms of presentation, and the increase in the frequency of nuclear alterations and altered biomarkers on DNA in animals and also in humans. The results obtained demonstrate evidence that associate the consumption of cocaine and the presence of morphological alteration in cells, primarily karyorrhexis, karyolysis and pyknosis that precede to necrosis as well as and the presence of biomarkers of DNA damage, primarily micronuclei, nuclear buds and nucleoplasmic bridges.

Trabalho Final de Mestrado Integrado, Ciências Farmacêuticas, Universidade de Lisboa, Faculdade de Farmácia, 2016

Country
Portugal
Related Organizations
Keywords

Ciências da Saúde, Genotoxicidade, Ensaio do cometa, Lesão do DNA, Micronúcleos, Biomarcadores de genotoxicidade, Cocaína, Mestrado Integrado - 2016

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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