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Francina Fonseca

7 papers in the library · 474 citations · publishing 2006-2023

Papers

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Pharmacological effects of methylone and MDMA in humans

Frontiers in Pharmacology February 17, 2023 Lourdes Poyatos, Clara Pérez‐mañá, Olga Hladun et al. 26 citations

Methylone is one of the most common synthetic cathinones popularized as a substitute for 3,4-methylenedioxymethamphetamine (MDMA, midomafetamine) owing to its similar effects among users. Both psychostimulants exhibit similar chemistry (i.e., methylone is a β-keto analog of MDMA) and mechanisms of action. Currently, the pharmacology of methylone remains scarcely explored in humans. Herein, we...

A Comparison of Acute Pharmacological Effects of Methylone and MDMA Administration in Humans and Oral Fluid Concentrations as Biomarkers of Exposure

Biology August 17, 2021 Lourdes Poyatos, Esther Papaseit, Eulàlia Olesti et al. 26 citations

Considered the β-keto analogue of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy), 3,4-Methylenedioxymethcathinone (methylone) is a synthetic cathinone. Over the years, methylone has been used as a substitute for conventional psychostimulants, such as MDMA. To date, little is known about the human pharmacology of methylone; the only available information has been provided by surveys or...

Acute Pharmacological Effects of Oral and Intranasal Mephedrone: An Observational Study in Humans

Pharmaceuticals January 28, 2021 Esther Papaseit, Eulàlia Olesti, Clara Pérez‐mañá et al. 30 citations

Mephedrone (4-methylmethcathinone) is a synthetic cathinone with psychostimulant properties which remains one of the most popular new psychoactive substances (NPS). It is frequently used orally and/or intranasally. To date, no studies have evaluated the acute effects and pharmacokinetics after self-administration of mephedrone orally (ingestion) and intranasally (insufflation) in naturalistic...

Mephedrone and Alcohol Interactions in Humans

Frontiers in Pharmacology January 28, 2020 Esther Papaseit, Clara Pérez‐mañá, Elizabeth B. de Sousa Fernandes Perna et al. 27 citations

Mephedrone (4-MMC, mephedrone) is a synthetic cathinone derivative included in the class of new psychoactive substances. It is commonly used simultaneously with alcohol (ethanol). The aim of the present study was to evaluate the interactions on subjective, cardiovascular and hormone effects and pharmacokinetics between mephedrone and alcohol in humans. Eleven male volunteers participated as...

Therapeutic Use of LSD in Psychiatry: A Systematic Review of Randomized-Controlled Clinical Trials

Frontiers in Psychiatry January 21, 2020 Juan José Fuentes, Francina Fonseca, Matilde Elices et al. 176 citations

Lysergic acid diethylamide (LSD) was studied from the 1950s to the 1970s to evaluate behavioral and personality changes, as well as remission of psychiatric symptoms in various disorders. LSD was used in the treatment of anxiety, depression, psychosomatic diseases and addiction. However, most of the studies were not performed under contemporary standards, and it has taken several decades for a...

Something New about Something Old: A 10-Year Follow-Up on Classical and New Psychoactive Tryptamines and Results of Analysis

Journal of Psychoactive Drugs June 1, 2017 Álvaro José Palma-Conesa, Mireia Ventura, Liliana Galindo et al. 65 citations

New psychoactive tryptamines may be a public health risk since they intend to mimic the hallucinogenic effects of regulated psychoactive drugs. Few studies describe uses and clinical effects of unregulated new psychoactive tryptamines. This study aims (1) to explore the presence of tryptamines classified as NPS among the substances delivered for analysis to a harm-reduction organization; (2) to...

γ‐Hydroxybutyrate (GHB) in Humans

Annals of the New York Academy of Sciences August 1, 2006 Sergio Abanades, Magı́ Farré, Mireia Segura et al. 124 citations

Despite gamma-hydroxybutyrate (GHB) therapeutic uses and the increasing concern about its toxicity, few studies have addressed GHB dose-related effects under controlled administration and their relationship with its pharmacokinetics. The study design was double-blind, randomized, crossover, and controlled. As a pilot pharmacology phase I study, increasing doses of GHB were given. Single oral...