Line Pourtau

ORCID: 0000-0003-3315-2222
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About
Contact & Profiles
Research Areas
  • Saffron Plant Research Studies
  • Cardiovascular Function and Risk Factors
  • Circadian rhythm and melatonin
  • Medicinal Plants and Bioactive Compounds
  • Advanced MRI Techniques and Applications
  • Diet and metabolism studies
  • Cardiac Arrhythmias and Treatments
  • Sleep and Wakefulness Research
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Skin Protection and Aging
  • Phytochemicals and Antioxidant Activities
  • Nanoparticle-Based Drug Delivery
  • melanin and skin pigmentation
  • Atrial Fibrillation Management and Outcomes
  • Glioma Diagnosis and Treatment
  • Regulation of Appetite and Obesity
  • Venous Thromboembolism Diagnosis and Management
  • Dietary Effects on Health
  • Nanoplatforms for cancer theranostics
  • Cardiac electrophysiology and arrhythmias
  • Lanthanide and Transition Metal Complexes
  • MRI in cancer diagnosis
  • Cardiac Structural Anomalies and Repair
  • Olfactory and Sensory Function Studies
  • Neurological Disease Mechanisms and Treatments

Complexité, Innovation et Activités Motrices et Sportives
2019-2025

Inserm
2017-2024

Association Clinique et Thérapeutique Infantile du Val de Marne
2021-2024

MetaboHUB
2024

Centre Hospitalier Universitaire de Bordeaux
2024

French Clinical Research Infrastructure Network
2024

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2009-2024

Electrophysiology and Heart Modeling Institute
2016-2023

Centre de Recherche Cardio-Thoracique de Bordeaux
2017-2022

Université de Bordeaux
2009-2018

Multifunctional polymersomes loaded with maghemite nanoparticles and grafted an antibody, directed against human endothelial receptor 2, are developed as novel MRI contrast agents for bone metastasis imaging. Upon administration in mice bearing tumor grown from breast cancer cells, MR images show targeting enhanced retention of antibody-labeled at the site.

10.1002/adhm.201300061 article EN Advanced Healthcare Materials 2013-04-19

Glucocorticoids are released after hypothalamus-pituitary-adrenal axis stimulation by stress and act both in the periphery brain to bring about adaptive responses that essential for life. Dysregulation of response can precipitate psychiatric diseases, particular depression. Recent genetic studies have suggested glucocorticoid carrier transcortin, also called corticosteroid-binding globulin (CBG), may an important role response. We investigated effect partial or total transcortin deficiency...

10.1210/en.2009-0862 article EN Endocrinology 2009-12-19

Background Polyphenols are naturally occurring organic compounds found in plants. Research suggests that their intake reduces the risk of cognitive decline and related dementias. Grapes blueberries polyphenol-rich foods have attracted attention for potential cognitive-enhancing effects. Purpose Examine effects supplementation with a standardized patented grape blueberry extract (Memophenol™) on function older adults mild impairment. Study design Two-arm, 6 month, parallel-group, randomized,...

10.3389/fpsyg.2023.1144231 article EN cc-by Frontiers in Psychology 2023-03-29

Despite an increasing level of evidence supporting the individual beneficial effect polyphenols on cognitive performance, information related to potential synergistic action these phytonutrients performance during a prolonged effort is currently lacking. This study investigated acute and sustained polyphenols-rich extract from grape blueberry (PEGB), working memory attention in healthy students intensive effort. In this randomised, cross-over, double blind study, 30 consumed 600 mg PEGB or...

10.3390/antiox8120650 article EN cc-by Antioxidants 2019-12-17

Anxiety, stress, and low mood are closely related may contribute to depressive symptoms. Among non-pharmacological solutions improve subclinical symptoms resilience natural products such as saffron—identified promising following preliminary beneficial effects in major disorder—represent a relevant strategy. This study aimed assess the efficacy of 8 weeks' supplementation with 30 mg standardized saffron extract on emotional well-being healthy adults feelings anxiety and/or stress evaluate...

10.3389/fnut.2020.606124 article EN cc-by Frontiers in Nutrition 2021-02-01

Depressive disorders represent a major public health concern and display continuously rising prevalence. Importantly, large proportion of patients develops aversive side effects and/or does not respond properly to conventional antidepressants. These issues highlight the need identify further therapeutic strategies, including nutritional approaches using natural plant extracts with known beneficial impacts on health. In that context, growing evidence suggests saffron could be particularly...

10.3390/nu13030904 article EN Nutrients 2021-03-11

Increases in oxidative stress have been reported to play a central role the vulnerability depression, and antidepressant drugs may reduce increased patients. Among plants exerting anti-inflammatory anti-oxidant properties, saffron, spice derived from flower of Crocus sativus, is also known for its positive effects on potentially through SSRI-like properties. However, molecular mechanisms underlying these their health benefits humans are currently unclear. Using an original ex vivo clinical...

10.3390/nu14071511 article EN Nutrients 2022-04-05

Treatment of anxiety and depression predominantly centres around pharmacological interventions, which have faced criticism for their associated side effects, lack efficacy low tolerability. Saffron, is reportedly well tolerated in humans, has been recognised its antidepressant anti-anxiety properties. Indeed, we previously reported upon the saffron extract supplementation healthy adults with subclinical anxiety. However, molecular aetiology remains unclear. In a rodent model low-grade...

10.1039/d2fo02739a article EN cc-by Food & Function 2022-01-01

The Mediterranean diet (MD) and its bioactive constituents have been advocated for their neuroprotective properties along with capacity to affect gut microbiota speciation metabolism. Mediated through the brain axis, this modulation of may partly contribute MD. To explore potential interaction, we evaluated a novel blend (Neurosyn240) resembling in rodent model chronic low-grade inflammation. Behavioral tests cognition, proteomic analysis, 16S rRNA sequencing, 1H NMR metabolomic analyses...

10.1080/19490976.2024.2363011 article EN cc-by-nc Gut Microbes 2024-06-04

Belight3TM, a nutricosmetic formulation containing polyphenol-rich extracts, has previously been demonstrated to be safe and effective in brightening skin color dark spots clinical study involving Asian volunteers. The aim of this was investigate the efficacy lightening Caucasian population, which is characterized by lighter pigmentation greater visibility hyperpigmentation, as well determine whether supplementation increased sensitivity UV exposure. A randomized, double-blind,...

10.3390/cosmetics12010027 article EN cc-by Cosmetics 2025-02-05

Sleep disorders may increase neurodegenerative diseases risks and alter gut microbiota composition. Saffron (Crocus sativus) supplementation has been linked to sleep improvements microbiome changes, but its effect on quality through microbiota-brain axis modulation remains unexplored. A randomised, placebo-controlled pilot study of saffron (30mg/day for 4-weeks) was conducted with 52 older adults (55-85 years) experiencing complaints. Subjective objective were measured using validated...

10.1101/2025.02.20.25322405 preprint EN cc-by-nd medRxiv (Cold Spring Harbor Laboratory) 2025-02-24

<sec> <title>BACKGROUND</title> Sleep disturbances are highly prevalent and associated with an increased risk of mental physical health disorders. Given the limitations pharmacological treatments, natural interventions such as saffron extract have attracted growing interest for their potential to improve sleep stress-related outcomes. </sec> <title>OBJECTIVE</title> To examine effect a standardized (Safr’Inside™) on quality, insomnia symptoms, stress, psychological well-being in adults...

10.2196/preprints.76283 preprint EN 2025-04-24

Aim: Natural interventions for sleep disturbances, such as saffron extract, are gaining scientific and clinical interest. This 3-arm, randomized, double-blind, placebo-controlled trial examined the effect of a standardized extract (Safr'InsideTM) on sleep, stress, other associated psychological outcomes in 165 men women reporting moderate insomnia. Methods: Participants received daily capsule containing 30 mg 20 or placebo (maltodextrin) 4 weeks. The primary endpoint was change insomnia...

10.1101/2025.05.07.25326999 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2025-05-08

Overhauser‐enhanced MRI (OMRI) offers the potentiality of detecting low‐concentrated species generated by specific biological processes. However molecular imaging applications OMRI need significant improvement in spatial localization. Here it is shown that 3D‐OMRI a free radical injected tumor‐bearing mice can be performed at high anatomical resolution constant field. A 30 mm cavity operating 5.43 GHz was inserted C‐shaped magnet for proton 0.194 T. Nude with or without brain‐implanted C6...

10.1002/cmmi.464 article EN Contrast Media & Molecular Imaging 2012-01-01

A knowledge of the spatial localization cell vehicles used in gene therapy against glioma is necessary before launching therapy. For this purpose, MRI tracking performed by labeling with contrast agents. In context, goal study was to follow noninvasively chemoattraction therapeutic microglial cells a human model triggering Silica nanoparticles grafted gadolinium were label microglia. These vehicles, expressing constitutively thymidine kinase suicide fused green fluorescent protein gene,...

10.1002/nbm.1699 article EN NMR in Biomedicine 2011-03-08

Thrombotic risk constitutes a major complication of atrial fibrillation (AF). Platelets and microparticles (MPs) are important for hemostasis thrombosis, however their participation during AF is not well known. The aim this study was to characterize platelet function MPs procoagulant fibrinolytic activity in patients determine the effects an acute-AF episode.Blood collected from paroxysmal (21) persistent (16) referred catheter ablation. Ten sinus rhythm 10days were induced allowing...

10.1016/j.ijcard.2017.03.068 article EN cc-by-nc-nd International Journal of Cardiology 2017-07-22

Background Papillary muscles are an important source of ventricular tachycardia (VT). Yet little is known about the role right (RV) endocavity structure, moderator band (MB). The aim this study was to determine characteristics MB that may predispose arrhythmia substrates. Methods Ventricular wedge preparations with intact MBs were studied from humans (n=2) and sheep (n=15; 40-50 kg). RV endocardium optically mapped, electrical recordings measured along septum. S1S2 pacing free wall, MB, or...

10.1161/circep.117.005913 article EN cc-by Circulation Arrhythmia and Electrophysiology 2018-08-01

Oral formulations with natural plant-based extracts represent a safe and promising strategy for skin lightening anti-dark-spot effects, especially in Asia. This study evaluated the effect of an oral formulation including polyphenol-rich vitamin C (Belight3TM) on vitro tyrosinase inhibitory activity investigated its effects vivo. Tyrosinase was measured spectrophotometry. A randomized, double-blind, placebo-controlled clinical carried out 58 healthy Asian males females, aged 45–65. Skin color...

10.3390/cosmetics10050143 article EN cc-by Cosmetics 2023-10-17

The dynamic protective capacity of (poly)phenols, attributed to their potent antioxidant and anti-inflammatory properties, has been consistently reported. Due alter gut microbiome composition, further actions (poly)phenols may be exerted through the modulation microbiota-gut-brain axis. However, underlying mechanisms remain poorly defined. Here, we investigated effect a (poly)phenol-rich grape blueberry extract (Memophenol™), on axis in model chronic low-grade inflammation (0.5 mg/kg/wk...

10.1016/j.neuint.2024.105878 article EN cc-by-nc-nd Neurochemistry International 2024-10-09

Depressive disorders are a major public health concern. Despite currently available treatment options, their prevalence steadily increases, and high rate of therapeutic failure is often reported, together with important antidepressant-related side effects. This highlights the need to improve existing strategies, including by using nutritional interventions. In that context, saffron recently received particular attention for its beneficial effects on mood, although underlying mechanisms...

10.3390/pharmaceutics13122155 article EN cc-by Pharmaceutics 2021-12-14

Cardiac fiber direction is an important factor determining the propagation of electrical activity, as well development mechanical force. In this article, we imaged ventricles several species with special attention to intraventricular septum determine functional consequences septal organization. First, identified a dual-layer organization orientation in ex vivo sheep hearts using diffusion tensor imaging at high field MRI. To expand scope results, investigated presence similar five mammalian...

10.1152/ajpheart.00050.2022 article EN cc-by AJP Heart and Circulatory Physiology 2022-03-18

Background Although activation of inflammatory processes is essential to fight infections, its prolonged impact on brain function well known contribute the pathophysiology many medical conditions, including neuropsychiatric disorders. Therefore, identifying novel strategies selectively counter harmful effects neuroinflammation appears as a major health concern. In that context, this study aimed test relevance nutritional intervention with saffron, spice for centuries beneficial effect...

10.3389/fnut.2023.1267839 article EN cc-by Frontiers in Nutrition 2023-10-05
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