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Concept

Acide valproïque

Publications associées (18)

Secondary Fast Breakdown in Narrow Bipolar Events

Farhad Rachidi-Haeri, Marcos Rubinstein

The physical mechanism of Narrow bipolar events (NBEs) has been studied for decades but it still holds many mysteries. Recent observations indicate that the fast breakdown discharges that produce NBEs sometimes contain a secondary fast breakdown that propa ...

2022

Molecular analysis and therapeutic applications of human serum albumin-fatty acid interactions

Alessandro Zorzi, Alessandro Angelini

Human serum albumin (hSA) is the major carrier protein for fatty acids (FAs) in plasma. Its ability to bind multiple FA moieties with moderate to high affinity has inspired the use of FA conjugation as a safe and natural platform to generate long-lasting t ...

ELSEVIER2022

Lack of effect on ambulation of dalfampridine-ER (4-AP) treatment in adult SMA patients

Brian Donal McCabe

SMA is a genetically determined motor system disorder that results in muscle weakness, selective motor neuron death, muscle atrophy, and impaired functional mobility. In SMA model systems, long-term treatment with 4-aminopyridine (4-AP) has been shown to i ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Predictable enriched environment prevents development of hyper-emotionality in the VPA rat model of autism

Henry Markram, Julie Meystre, Kamila Markram, Mônica Regina Favre, Deborah La Mendola, Melissa Cochrane

Understanding the effects of environmental stimulation in autism can improve therapeutic interventions against debilitating sensory overload, social withdrawal, fear and anxiety. Here, we evaluate the role of environmental predictability on behavior and pr ...

Frontiers Research Foundation2015

Photosensitizing and Inhibitory Effects of Ozonated Dissolved Organic Matter on Triplet-Induced Contaminant Transformation

Urs von Gunten

Dissolved organic matter (DOM) is both a promoter and an inhibitor of triplet-induced organic contaminant oxidation. This dual role was systematically investigated through photochemical experiments with three types of DOM of terrestrial and aquatic origins ...

American Chemical Society2015

General developmental health in the VPA-rat model of autism

Henry Markram, Kamila Markram, Georges Khazen, Mônica Regina Favre

Autism is a neurodevelopmental condition diagnosed by impaired social interaction, abnormal communication and, stereotyped behaviors. While post-mortem and imaging studies have provided good insights into the neurobiological symptomology of autism, animal ...

Frontiers Research Foundation2013

Hyper-emotional neurophysiology in a rat model of autism

Mônica Regina Favre

Autism is a pervasive neurodevelopmental disorder of unknown etiology, characterized by a spectrum of symptoms of social impairment, abnormal communication, and unusual restricted, inflexible behaviors. Patients also frequently present various levels of se ...

EPFL2013

The Use of Valproic Acid in Transient Gene Expression with HEK-293E Cells

Divor Kiseljak

Transient gene expression (TGE) is a rapid method for the production of recombinant proteins. Recently, valproic acid (VPA), a well known histone deacetylase inhibitor, has been suggested for the use in cell cultures to enhance recombinant protein expressi ...

EPFL2013

Valproic acid enhances recombinant mRNA and protein levels in transiently transfected Chinese hamster ovary cells

Florian Maria Wurm, David Hacker, Lucia Baldi Unser, Sarah Wulhfard

Valproic acid (VPA) is a small molecule that inhibits histone deacetylase activity. Here we report that VPA increases recombinant mRNA and protein levels in transiently transfected CHO DG44 cells. In the presence of VPA, transient recombinant antibody yiel ...

Elsevier2010

Enhanced long-term microcircuit plasticity in the valproic Acid animal model of autism

Henry Markram, Kamila Markram, Tania Rinaldi, Jean-Vincent Le Bé

A single intra-peritoneal injection of valproic acid (VPA) on embryonic day (ED) 11.5 to pregnant rats has been shown to produce severe autistic-like symptoms in the offspring. Previous studies showed that the microcircuitry is hyperreactive due to hyperco ...

2009

Abnormal fear conditioning and amygdala processing in an animal model of autism

Maria del Carmen Sandi Perez, Henry Markram, Kamila Markram, Tania Rinaldi, Deborah La Mendola

A core feature of autism spectrum disorders is the impairment in social interactions. Among other brain regions, a deficit in amygdala processing has been suggested to underlie this impairment, but whether the amygdala is processing fear abnormally in auti ...

Nature Publishing Group2008

Hyper-connectivity and hyper-plasticity in the medial prefrontal cortex in the valproic Acid animal model of autism

Henry Markram, Tania Rinaldi

The prefrontal cortex has been extensively implicated in autism to explain deficits in executive and other higher-order functions related to cognition, language, sociability and emotion. The possible changes at the level of the neuronal microcircuit are ho ...

2008

Hyperconnectivity of Local Neocortical Microcircuitry Induced by Prenatal Exposure to Valproic Acid

Henry Markram, Gilad Silberberg, Tania Rinaldi

Exposure to valproic acid (VPA) during embryogenesis can cause several teratogenic effects, including developmental delays and in particular autism in humans if exposure occurs during the third week of gestation. We examined the postnatal effects of embryo ...

Oxford University Press2007

The intense world syndrome – an alternative hypothesis for autism

Henry Markram, Kamila Markram, Tania Rinaldi

Autism is a devastating neurodevelopmental disorder with a polygenetic predisposition that seems to be triggered by multiple environmental factors during embryonic and/or early postnatal life. While significant advances have been made in identifying the ne ...

2007

The role of the amygdala in emotional memories : a multidisciplinary approach

Maria del Carmen Sandi Perez, Kamila Markram

This thesis investigates the role of the amygdala for the establishment of fear memories with a multidisciplinary approach, including behavioural, psychopharmacological, genetic, molecular, and electrophysiological techniques in rats or mice, under healthy ...

EPFL2007

Elevated NMDA receptor levels and enhanced postsynaptic long-term potentiation induced by prenatal exposure to valproic acid

Henry Markram, Tania Rinaldi, Karina Kulangara

Valproic acid (VPA) is a powerful teratogen causing birth defects in humans, including autism spectrum disorder (ASD), if exposure occurs during the first trimester of embryogenesis. Learning and memory alterations are common symptoms of ASD, but underlyin ...

National Academy of Sciences2007

Altered neocortical microcircuitry in the valproic acid rat model of autism

Tania Rinaldi

Autism is a wide-spectrum disorder with early childhood onset, affecting general cognitive capabilities and, in particular, complex information processing. Although interesting directions of research start to appear, the precise causes of the disorder and ...

EPFL2006

Long-term glial cell line-derived neurotrophic factor overexpression in the intact nigrostriatal system in rats leads to a decrease of dopamine and increase of tetrahydrobiopterin production

Patrick Aebischer

Parkinson's disease (PD) is characterized by the progressive degeneration of the nigrostriatal dopaminergic system. Brain delivery of glial cell line-derived neurotrophic factor (GDNF) has been shown to protect and restore the dopaminergic pathway in vario ...

Wiley-Blackwell2005