50 results match your criteria: "Universite J. Jaurès - Toulouse II[Affiliation]"

Smoking Mostly Alone as a Risk Factor for Cannabis Use Disorders and Depressive Symptoms.

Int J Ment Health Addict

November 2022

Centre d'Etudes et de Recherche en Psychopathologie et Psychologie de la Santé, Université Toulouse II - Jean Jaurès, 5 Allées Antonio Machado, 31058 Toulouse Cedex 9, France.

The empirically grounded etiological models of cannabis use already include a vast range of psychological factors (within an individual), paving the ground for individualized prevention and intervention programs. However, the interpersonal (among individuals) and relational variables influencing the emergence of excessive cannabis use are less understood. Particularly, the impact of consumption context (i.

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Background: In head and neck cancer, many tools exist to measure speech impairment, but few evaluate the impact on communication abilities. Some self-administered questionnaires are available to assess general activity limitations including communication. Others are not validated in oncology.

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Background: Deep brain stimulation of the sub-thalamic nucleus (DBS-STN) reduces symptoms in Parkinson's disease (PD) patients with motor fluctuations. However, some patients may not feel ameliorated afterwards, despite an objective motor improvement. It is thus important to find new predictors of patients' quality of life (QoL) amelioration after DBS-STN.

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Arsenic-induced oxidative stress in Brassica oleracea: Multivariate and literature data analyses of physiological parameters, applied levels and plant organ type.

Environ Geochem Health

June 2022

Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 allée Machado A, 31058cedex 9, Toulouse, France.

Plant redox homeostasis governs the uptake, toxicity and tolerance mechanism of toxic trace elements and thereby elucidates the remediation potential of a plant. Moreover, plant toxicity/tolerance mechanisms control the trace element compartmentation in edible and non-edible plant organs as well as the associated health hazards. Therefore, it is imperative to unravel the cellular mechanism involved in trace element toxicity and tolerance.

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The pandemic of COVID-19 has spread from China to the whole world. Here we address the vulnerability of African children in the context of this health crisis. Based on medical, socio-economic and anthropological studies, we present a thematic review that examines the issue at three levels.

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Heavy metal contamination and exposure risk assessment via drinking groundwater in Vehari, Pakistan.

Environ Sci Pollut Res Int

November 2020

Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès-Toulouse II, 5 allée Antonio Machado, 31058, Toulouse, France.

The presence of toxic substances in aquifers, particularly potentially toxic heavy metals, is an important environmental and social concern worldwide. These heavy metals are capable to exert many injurious health effects in human beings by intake of drinking metal-contaminated water. However, very little attention is paid towards quantitative and qualitative analysis of groundwater used for drinking purpose in several less-developed countries.

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Copper uptake, essentiality, toxicity, detoxification and risk assessment in soil-plant environment.

Chemosphere

November 2020

Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan. Electronic address: http://reseau-agriville.com/.

Copper (Cu) is an essential metal for human, animals and plants, although it is also potentially toxic above supra-optimal levels. In plants, Cu is an essential cofactor of numerous metalloproteins and is involved in several biochemical and physiological processes. However, excess of Cu induces oxidative stress inside plants via enhanced production of reactive oxygen species (ROS).

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A critical review of mercury speciation, bioavailability, toxicity and detoxification in soil-plant environment: Ecotoxicology and health risk assessment.

Sci Total Environ

April 2020

Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 allée Machado A., 31058 Toulouse, cedex 9, France; Université de Toulouse, INP-ENSAT, Avenue de l'Agrobiopole, 31326 Auzeville-Tolosane, France; Association Réseau-Agriville (http://reseau-agriville.com/), France.

Environmental contamination by a non-essential and non-beneficial, although potentially toxic mercury (Hg), is becoming a great threat to the living organisms at a global scale. Owing to its various uses in numerous industrial processes, high amount of Hg is released into different environmental compartments. Environmental Hg contamination can result in food chain contamination, especially due to its accumulation in edible plant parts.

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Atmospheric contamination by heavy metal-enriched particulate matter (metal-PM) is highly topical nowadays because of its high persistence and toxic nature. Metal-PMs are emitted to the atmosphere by various natural and anthropogenic activities, the latter being the major source. After being released into the atmosphere, metal-PM can travel over a long distance and can deposit on the buildings, water, soil, and plant canopy.

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Risk assessment and biophysiochemical responses of spinach to foliar application of lead oxide nanoparticles: A multivariate analysis.

Chemosphere

April 2020

Université de Toulouse, INP-ENSAT, Av. de l'Agrobiopôle, 31326, Castanet-Tolosan, France; Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès-Toulouse II, 5 allée Antonio Machado, 31058, Toulouse, France.

Despite extensive research progress in the recent past, the data regarding foliar uptake of heavy metals, associated biophysiochemical changes inside plants and possible health hazards are limited. This study determined the effect of foliar application of lead oxide nanoparticles (PbO-NPs) on lead (Pb) accumulation, physiological and biochemical changes inside spinach plants and associated health risks. A green method was used to prepare PbO-NPs using coconut water.

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The goal of this work was to develop and normalise an international French version of the AzBio sentence test. A corpus of 1000 sentences was generated. These sentences were recorded with four talkers and processed through a four-channel cochlear implant simulation.

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In this study, column-scale laboratory experiments were performed to evaluate the arsenic (As) removal efficiency of different agricultural biowastes-derived biosorbents (orange peel, banana peel, rice husk) and biochar, using As-containing solutions and As-contaminated groundwater. All the biosorbents and biochar efficiently removed (50-100%) As from groundwater (drinking well water). Arsenic removal potential of biosorbents varied with their type, As concentration, contact time, and As solution type.

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Cadmium (Cd) phytoremediation potential and its accumulation in edible and nonedible plant tissues is the function of various biochemical processes taking place inside plants. This study assessed the impact of organic ligands on Cd phyto uptake and different biophysiochemical processes of Spinacia oleracea L., and associated health hazards.

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Atmospheric contamination by heavy metal(loid)-enriched particulate matter (metal-PM) is highly topical these days because of its high persistence, toxic nature, and health risks. Globally, foliar uptake of metal(loid)s occurs for vegetables/crops grown in the vicinity of industrial or urban areas with a metal-PM-contaminated atmosphere. The current study evaluated the foliar uptake of arsenic (As), accumulation of As in different plant organs, its toxicity (in terms of ROS generation, chlorophyll degradation, and lipid peroxidation), and its defensive mechanism (antioxidant enzymes) in spinach (Spinacia oleracea) after foliar application of As in the form of nanoparticles (As-NPs).

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A meta-analysis of the distribution, sources and health risks of arsenic-contaminated groundwater in Pakistan.

Environ Pollut

November 2018

Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan; MARUM and Department of Geosciences, University of Bremen, Bremen D, 28359, Germany.

Article Synopsis
  • Millions worldwide are exposed to toxic arsenic in groundwater used for drinking and agriculture, with significant concerns in Pakistan where data on contamination is limited.
  • A review of 43 studies revealed that the average arsenic level in Pakistan's groundwater is 120 μg/L, far exceeding both the WHO limit of 10 μg/L and Pakistan's limit of 50 μg/L, particularly in Punjab and Sindh provinces.
  • The study suggests the need for sustainable solutions to address arsenic contamination, highlighting the importance of public awareness, government action, and the need for further research.
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The current study investigated the influence of organic amendments on cadmium (Cd) uptake and its effects on biochemical attributes of young and old leaves of bean. Bean seedlings were exposed to two levels of Cd (25 and 100 μM) in the presence and absence of different levels of ethylenediaminetetraacetic acid (EDTA) and citric acid (CA). An increase in Cd concentration in growth medium significantly enhanced Cd accumulation in bean roots and shoot.

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Tracing trends in plant physiology and biochemistry: Need of databases from genetic to kingdom level.

Plant Physiol Biochem

June 2018

Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 Allée Antonio Machado, 31058 Toulouse Cedex 9, France.

With the rapid advancement in technologies over recent decades, abundant data regarding plant physiological/biochemical responses to stress conditions are now available. Comparing plant stress responses using latest statistical software and analytical models can trace very interesting and useful trends in literature data, which can be of high use for future research and policy making. This model study uses principal component analysis (PCA) to compare physiological/biochemical responses of Vicia faba plant against Pb stress chelated by ethylenediaminetetraacetic acid (EDTA) or citric acid (CA).

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Currently, several news channels and research publications have highlighted the dilemma of arsenic (As)-contaminated groundwater in Pakistan. However, there is lack of data regarding groundwater As content of various areas in Pakistan. The present study evaluated As contamination and associated health risks in previously unexplored groundwater of Hasilpur-Pakistan.

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Article Synopsis
  • The study investigates how different forms of acids (EDTA and citric acid) influence the accumulation and toxicity of cadmium (Cd) in pea plants at various growth stages.
  • In a two-part experiment, the first part focused on germinating seedlings in Cd-contaminated sand, while the second part assessed the effects in hydroponic culture, measuring factors like cadmium and chlorophyll content, as well as lipid peroxidation.
  • Results indicated that younger leaves and germinating seedlings were more affected by Cd toxicity, with EDTA enhancing Cd accumulation and both acids increasing the production of harmful hydroxyl radicals in the plants.
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The current study examined the effect of calcium (Ca) and ethylenediaminetetraacetic acid (EDTA) on arsenic (As) uptake and toxicity to spinach (Spinacia oleracea) as well as assessed the potential human health risks. Spinach seedlings were exposed to three levels of As (25, 125, and 250 μM) alone or together with three levels of EDTA (25, 125, and 250 μM) and Ca (1, 5, and 10 mM). The effect of EDTA and Ca was assessed in terms of As contents in roots and shoots, hydrogen peroxide production, chlorophyll contents, and lipid peroxidation.

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The current study evaluated the effect of groundwater and wastewater irrigation on lead (Pb) accumulation in soil and vegetables, and its associated health implications. A pot experiment was conducted in which spinach (Spinacia oleracea), radish (Raphanus sativus), and cauliflower (Brassica oleracea) were irrigated with groundwater and wastewaters containing varying concentrations of Pb. Lead contents were measured in wastewaters, soils and root and shoot of vegetables.

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Throughout the world, urban agriculture supplies fresh local vegetables to city populations. However, the increasing anthropogenic uses of metal-containing nanoparticles (NPs) such as CuO-NPs in urban areas may contaminate vegetables through foliar uptake. This study focused on the CuO-NP transfer processes in leafy edible vegetables (i.

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Chromium speciation, bioavailability, uptake, toxicity and detoxification in soil-plant system: A review.

Chemosphere

July 2017

Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari 61100, Pakistan; Center of Excellence in Environmental Studies, King Abdulaziz University, P.O Box 80216, Jeddah 21589, Saudi Arabia.

Chromium (Cr) is a potentially toxic heavy metal which does not have any essential metabolic function in plants. Various past and recent studies highlight the biogeochemistry of Cr in the soil-plant system. This review traces a plausible link among Cr speciation, bioavailability, phytouptake, phytotoxicity and detoxification based on available data, especially published from 2010 to 2016.

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Comparative effect of calcium and EDTA on arsenic uptake and physiological attributes of Pisum sativum.

Int J Phytoremediation

July 2017

e Centre d'Etude et de Recherche Travail OrganisationPouvoir (CERTOP) , UMR5044, Université J. Jaurès - Toulouse II, Toulouse Cedex 9 , France.

In this study, we determined the effect of ethylenediaminetetraacetic acid (EDTA) and calcium (Ca) on arsenic (As) uptake and toxicity to Pisum sativum. Plants were treated with three levels of As (25, 125, and 250 µM) in the presence and absence of three levels of Ca (1, 5, and 10 mM) and EDTA (25, 125, and 250 µM). Exposure to As caused an overproduction of hydrogen peroxide (HO) in roots and leaves, which induced lipid peroxidation and decreased pigment contents.

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