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Stéphane Firmin

Stéphane Firmin
UniLaSalle · Agroecology, Hydrogeology, Media and Ressources Unit

Doctor of nutrition

About

19
Publications
4,955
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497
Citations

Publications

Publications (19)
Article
Full-text available
MicroRNAs (miRNAs) are recognized as key molecular regulators in most of intracellular processes essential for plant adaptation to environmental changes. microRNAs can mediate regulation of gene expression involved in development, acquisition of nutrients, defense and interactions with soil microorganisms to enhance stress tolerance of plants. Accu...
Article
Root exudation is involved in the recruitment of beneficial microorganisms by trophic relationships and/or signalling pathways. Among beneficial microorganisms, Plant Growth‐Promoting Rhizobacteria (PGPR) are known to improve plant growth and stress resistance. These interactions are of particular importance for species that do not interact with my...
Article
Full-text available
Background and aims One of the major challenges of modern agriculture is to transform agricultural systems to support food security under global change. The reduction of the agricultural carbon footprint requires the development of agroecological practices and eco-friendly processes for biomass and by-products transformation. The push towards decar...
Article
Full-text available
Biochar is more and more widely recognized as a promising agricultural amendment improving yield and ecosystem services in a range of different contexts. However, underlying mechanisms contributing to biochars benefits, notably biochar‐root interactions, and their mediation by biochar’s diverse properties remain unclear and poorly quantified. This...
Article
Due to increased drought frequency following climate change, practices improving water use efficiency and reducing water-stress are needed. The efficiency of organic amendments to improve plant growth conditions under drought is poorly known. Our aim was to investigate if organic amendments can attenuate plant water-stress due to their effect on th...
Article
Full-text available
Plant–soil–microbe interactions play a central role in plant nutrient acquisition and thus ecosystem functioning and nutrient availability in agroecosystems. Adjustments in root morphology, root exudation and associations with micro‐organisms such as arbuscular mycorrhizal fungi are common for phosphorus acquisition. Yet how plant below‐ground func...
Article
We recently reported augmentation of lipid peroxidation products in the liver of intrauterine growth-restricted (IUGR) piglets fed a high load of Maillard reaction products (MRPs) during suckling period. The underlying mechanisms of MRPs effects remain unknown. Here, we studied the long-term impact of MRPs exposure on liver oxidative status of IUGR...
Article
It is now accepted that the way our health evolves with aging is intimately linked to the quality of our early life. The present review highlights the emerging data of Developmental Origins of Health and Disease field on developmental disruption by toxicants and their subsequent effect on type 2 diabetes. We report adverse neonatal effects of sever...
Article
Objective: the present study has been conducted to evaluate the impact of the consumption of high MRP formula on changes in the microbiota and the oxidative status, during development, in the colons of intrauterine growth restricted (IUGR) juvenile pigs. Methods: over a 3-week period, fifteen-day old piglets received formula with two different h...
Article
ScopeFormula-derived dietary advanced glycation end products (AGEs) may promote programming of inflammation and oxidative stress in the kidney of intrauterine growth retardation (IUGR) piglets.Methods and resultsIUGR piglets received either a low temperature heated formula (n = 8) or a high temperature heated formula (HHF: n = 8) or suckled natural...
Article
After particulate matter (PM) collection in Cotonou (Benin), a complete physicochemical characterization of PM2.5 and PM>2.5 was led. Then, their adverse health effects were evaluated by using in vitro culture of human lung cells. BEAS-2B (bronchial epithelial cells) were intoxicated during short-term exposure at increasing PM concentrations (1.5-9...
Article
Full-text available
This study investigated the effect of a modified yeast cell wall extract preparation (YCW) on the excretion of aflatoxin B1 (AFB1) and aflatoxin M1 (AFM1) in feces, urine, and milk of dairy ewes fed an aflatoxin-contaminated diet. Sixteen ewes in mid-lactation were assigned to 4 treatment groups: control, AF (60 μg of AFB1/kg of feed), YCW (2 g/kg...
Article
Aflatoxin B1 (AFB1) and Ochratoxin A (OTA) are mycotoxins that can be found in a large variety of feedstuffs. Consumption of contaminated feeds can affect the health and performances of farm animals and if transferred into animal products can be a problem for the safety of food. Different treatments of detoxication based on organic adsorbants addit...
Article
Full-text available
The cell wall of Saccharomyces cerevisiae can bind mycotoxins in vitro, but there is scarce information on whether this property decreases the absorption of mycotoxins in vivo. The effect of a yeast cell wall preparation (YCW) on toxicokinetics and balance excretion (urine and faeces) of aflatoxin B(1) (AFB1) and ochratoxin A (OTA) was tested in ra...

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