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Félix Carvalho

30 papers in the library · 603 citations · publishing 2002-2022

Papers

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Metabolism of the designer drug 4-bromo-2,5-dimethoxyphenethylamine (2C-B) in mice, after acute administration.

Journal of Chromatography B November 25, 2004 Helena Carmo, Douwe De Boer, Fernando Remião et al. 32 citations

4-Bromo-2,5-dimethoxyphenethylamine (2C-B) is a psychoactive drug of abuse often sold under the general street name "Ecstasy". Recent reports on the abuse of 2C-B and analogues denote the lack of knowledge on this drug metabolism. In the present study, we investigated the metabolic profile of 2C-B in the mouse and found unchanged 2C-B and several metabolites, which could be identified by GC/MS...

DOI: 10.1016/j.jchromb.2004.08.026 (opens in new tab) Full text (opens in new tab) Drug metabolism Forensic toxicology Psychoactive drugs Animal studies

The toxicity of N-methyl-alpha-methyldopamine to freshly isolated rat hepatocytes is prevented by ascorbic acid and N-acetylcysteine.

Toxicology August 5, 2004 Márcia Carvalho, Fernando Remião, Nuno Milhazes et al.

In the past decade, clinical evidence has increasingly shown that the liver is a target organ for 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy") toxicity. The aims of the present in vitro study were: (1) to evaluate and compare the hepatotoxic effects of MDMA and one of its main metabolites, N-methyl-alpha-methyldopamine (N-Me-alpha-MeDA) and (2) to investigate the ability of antioxidants,...

Metabolism Is Required for the Expression of Ecstasy-Induced Cardiotoxicity in Vitro

Chemical Research in Toxicology April 27, 2004 Márcia Carvalho, Fernando Remião, Nuno Milhazes et al. 77 citations

Cardiovascular complications associated with 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) abuse have increasingly been reported. The indirect effect of MDMA mediated by a sustained high level of circulating biogenic amines may contribute to the cardiotoxic effects, but other factors, like the direct toxic effects of MDMA and its metabolites in cardiac cells, remain to be investigated....

DOI: 10.1021/tx049960f (opens in new tab) MDMA Ecstasy Glutathione reductase Pharmacology +6

Hepatotoxicity of 3,4-methylenedioxyamphetamine and alpha-methyldopamine in isolated rat hepatocytes: formation of glutathione conjugates.

Archives of Toxicology January 2004 Márcia Carvalho, Nuno Milhazes, Fernando Remião et al.

The amphetamine designer drugs 3,4-methylenedioxymethamphetamine (MDMA or "ecstasy") and its N-demethylated analogue 3,4-methylenedioxyamphetamine (MDA or "love") have been extensively used as recreational drugs of abuse. MDA itself is a main MDMA metabolite. MDMA abuse in humans has been associated with numerous reports of hepatocellular damage. Although MDMA undergoes extensive hepatic...

Role of metabolites in MDMA (ecstasy)-induced nephrotoxicity: an in vitro study using rat and human renal proximal tubular cells.

Archives of Toxicology October 2002 Márcia Carvalho, Gabrielle Hawksworth, Nuno Milhazes et al.

The metabolism of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) has recently been implicated in the mechanisms underlying ecstasy-induced neurotoxicity and hepatotoxicity. However, its potential role in ecstasy-induced kidney toxicity has yet to be investigated. Thus, primary cultures of rat and human renal proximal tubular cells (PTCs) were used to investigate the cytotoxicity induced by...