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Helena Pontes

3 papers in the library · publishing 2008-2010

Papers

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Mechanisms underlying the hepatotoxic effects of ecstasy.

Current Pharmaceutical Biotechnology August 1, 2010 Márcia Carvalho, Helena Pontes, Fernando Remião et al.

3,4-Methylenedioxymethamphetamine (MDMA or ecstasy) is a worldwide illegally used amphetamine-derived designer drug known to be hepatotoxic to humans. Jaundice, hepatomegaly, centrilobular necrosis, hepatitis and fibrosis represent some of the adverse effects caused by MDMA in the liver. Although there is irrefutable evidence of MDMA-induced hepatocellular damage, the mechanisms responsible for...

DOI: 10.2174/138920110791591535 (opens in new tab) Full text (opens in new tab) Liver Animals Humans N-methyl-3,4-methylenedioxyamphetamine +2

Metabolic interactions between ethanol and MDMA in primary cultured rat hepatocytes.

Toxicology April 11, 2010 Helena Pontes, Paula Guedes de Pinho, Eduarda Fernandes et al.

3,4-Methylenedioxymethamphetamine (MDMA; ecstasy), a drug of abuse commonly consumed at rave parties, is often taken in a polydrug abuse scenario, ethanol being one of the most associated drugs. Both MDMA and ethanol are mainly metabolized in the liver with formation of toxic metabolites. Our working hypothesis is that ethanol can modify the metabolism of MDMA through the cytochrome P450...

Synergistic toxicity of ethanol and MDMA towards primary cultured rat hepatocytes.

Toxicology December 5, 2008 Helena Pontes, Carla Sousa, Renata Silva et al.

Ethanol is frequently consumed along with 3,4-methylenedioxymethamphetamine (MDMA; ecstasy). Since both compounds are hepatotoxic and are metabolized in the liver, an increased deleterious interaction resulting from the concomitant use of these two drugs seems plausible. Another important feature of MDMA-induced toxicity is hyperthermia, an effect known to be potentiated after continuous...