Project description:Consumers are exposed through food intake to a cocktail of pesticides at low doses. Epidemiological evidence suggested a link between pesticide exposure and the development of the metabolic syndrome. We used a mouse model to mimic consumer exposure and assessed the metabolic consequences of a chronic dietary exposure to a cocktail of 6 commonly used pesticides (boscalid, captan, chlorpyrifos, thiofanate, thiacloprid and ziram) at non-toxic doses (acceptable daily intake ADI). One year of exposure induced body weight and adiposity gain, hepatic steatosis and glucose intolerance in males. Females did not display significant changes in body weight but displayed fasted hyperglycemia and perturbations of gut-microbiota related urinary metabolites. Exposure of mice invalidated for the constitutive androstane receptor (CAR) demonstrated that this nuclear receptor was involved in the observed sexual dimorphic response to pesticide exposure. These results demonstrate for the first time that chronic dietary exposure to a pesticide cocktail at the ADI levels induces metabolic perturbations favouring obesity and diabetic state and raise the questions of the relevance of the ADI levels of individual pesticides when present in mixture.
Project description:Human health effects from chronic exposure to pesticide residues are little investigated. We compared standard histopathology and serum biochemistry measures and multi-omics analyses in an in vivo subchronic toxicity test of a glyphosate, its formulated product MON 52276, and mixture of six pesticide active ingredients frequently detected in foodstuffs (azoxystrobin, boscalid, chlorpyrifos, glyphosate, imidacloprid and thiabendazole). Sprague-Dawley rats were administered with the pesticide mixture with each ingredient at its regulatory permitted acceptable daily intake.
Project description:Human health effects from chronic exposure to pesticide residues are little investigated. We compared standard histopathology and serum biochemistry measures and multi-omics analyses in an in vivo subchronic toxicity test of a glyphosate, its formulated product MON 52276, and mixture of six pesticide active ingredients frequently detected in foodstuffs (azoxystrobin, boscalid, chlorpyrifos, glyphosate, imidacloprid and thiabendazole). Sprague-Dawley rats were administered with the pesticide mixture with each ingredient at its regulatory permitted acceptable daily intake.
Project description:<div>BACKGROUND: Epidemiological evidence suggests a link between pesticide exposure and the development of metabolic diseases. However, most experimental studies have evaluated the metabolic effects of pesticides using individual molecules, often at non relevant doses or in combination with other risk factors such as high fat diets.<br></div><div>OBJECTIVES: We aimed to evaluate, in mice, the metabolic consequences of chronic dietary exposure to a pesticide mixture at non-toxic doses, relevant to consumers’ risk assessment.<br></div> METHODS: A mixture of six pesticides commonly used in France i.e. boscalid, captan, chlorpyrifos, thiofanate, thiacloprid, and ziram was incorporated in a standard chow diet, at doses exposing mice to the acceptable daily intake (ADI) of each pesticide. Wild-type (WT) and Constitutive Androstane Receptor knock-out (CAR-/-) C57Bl6/J male and female mice were exposed for 52 weeks. We assessed metabolic parameters (body-weight, food and water consumption, glucose tolerance, urinary metabolome) throughout the experiment. At the end of the experiment, we evaluated liver metabolism (histology, transcriptomics, metabolomics) and pesticide detoxification using LC/MS.<br>RESULTS: In males, pesticide exposure increased body weight and adiposity and induced hepatic steatosis and glucose intolerance. Exposed females exhibited fasted hyperglycaemia, hepatic oxidative stress and perturbations of gut microbiota-related urinary metabolites. The Constitutive Androstane Receptor is involved in the sexually dimorphic response to pesticide exposure.<br><div> CONCLUSIONS: We show for the first time the sexually dimorphic obesogen and diabetogen effects of a chronic dietary exposure to a realistic mixture of pesticides, which are partially mediated through CAR. This raises questions about the relevance of ADI for individual pesticides when present in a mixture.</div><div><br></div><div><b>Untargeted urine UPLC-MS assay</b> protocols and data are reported in the current study <b>MTBLS596</b>.</div><div><br><b>Untargeted urine, plasma and liver NMR assay</b> protocols and data associated to this study are reported in <a href=https://www.ebi.ac.uk/metabolights/mtbls602><b>MTBLS602</b></a>.<br></div>
Project description:<div>BACKGROUND: Epidemiological evidence suggests a link between pesticide exposure and the development of metabolic diseases. However, most experimental studies have evaluated the metabolic effects of pesticides using individual molecules, often at non-relevant doses or in combination with other risk factors such as high fat diets.<br></div><div>OBJECTIVES: We aimed to evaluate, in mice, the metabolic consequences of chronic dietary exposure to a pesticide mixture at non-toxic doses, relevant to consumers’ risk assessment.<br></div>METHODS: A mixture of six pesticides commonly used in France i.e. boscalid, captan, chlorpyrifos, thiofanate, thiacloprid, and ziram was incorporated in a standard chow diet, at doses exposing mice to the acceptable daily intake (ADI) of each pesticide. Wild-type (WT) and Constitutive Androstane Receptor knock-out (CAR-/-) C57Bl6/J male and female mice were exposed for 52 weeks. We assessed metabolic parameters (body-weight, food and water consumption, glucose tolerance, urinary metabolome) throughout the experiment. At the end of the experiment, we evaluated liver metabolism (histology, transcriptomics, metabolomics) and pesticide detoxification using LC/MS.<br>RESULTS: In males, pesticide exposure increased body weight and adiposity and induced hepatic steatosis and glucose intolerance. Exposed females exhibited fasted hyperglycaemia, hepatic oxidative stress and perturbations of gut microbiota-related urinary metabolites. The Constitutive Androstane Receptor is involved in the sexually dimorphic response to pesticide exposure.<br><div> CONCLUSIONS: We show for the first time the sexually dimorphic obesogen and diabetogen effects of a chronic dietary exposure <br>to a realistic mixture of pesticides, which are partially mediated through CAR. This raises questions about the relevance of ADI for <br>individual pesticides when present in a mixture.</div><div><br></div><div><b>Untargeted urine, plasma and liver NMR assay</b> protocols and data are reported in the current study <b>MTBLS602</b>.<br><br><b>Untargeted urine UPLC-MS assay</b> protocols and data associated to this study are reported in <a href="https://www.ebi.ac.uk/metabolights/MTBLS596"><b>MTBLS596</b></a>.<br></div><div><br></div>
2018-05-01 | MTBLS602 | MetaboLights
Project description:Maternal inflammation-induced metabolic disorders in offspring
| PRJNA735403 | ENA
Project description:Paternal inflammation-induced metabolic disorders in offspring
Project description:Quantitative mass spectrometry reveals food intake-induced neuropeptide level change in rat brain and functional assessment of selected neuropeptides as feeding regulators
Project description:Interventions: An intervention period: The glucide diet is three months by every meal. A daily glucide intake: Less than 5% of intake energy. Daily EPA(eicosapentaenoic acid) intake: More than 2 g. A daily protein intake: More than weight * 1.6g. A daily middle chain fatty acid intake: More than 40 g.
Primary outcome(s): The evaluation is every month after a glucide diet start. Blood sugar level, blood ketone body density, the weight, albumin level, renal function (BUN, Cr), liver function (GOT, GPT), QOL score)
Study Design: Single arm Non-randomized
Project description:Low-quality oocytes directly affect fertilization and embryo developmental ability, and further contributes to infertility in women. Dasatinib and quercetin, as a senolytics, has been explored extensively in various age-related diseases. Here, we report that nano-encapsulated senolytics cocktail (D+Q) efficaciously ameliorates the the quantity and quality of follicles and oocytes in vitro and in vivo. D+Q cocktail supplementation reduces the level of ROS in aged oocytes, decreases the frequency of fragmentation, maintains the spindle integrity, rescues mislocalized cortical granules, rescues mitochondrial membrane potential and alleviates DNA damage and apoptosis in vitro. Nano-encapsulated D+Q cocktail effectively ameliorates the fertility deficits in the cyclophosphamide-induced primary ovarian failure (POF) mice model. Moreover, RNA sequencing analysis shows that D+Q cocktail improves the fecundity of POF mice by increasing development gene expression and reduces the senescence-associated secretory phenotype (SASP) accumulation. Taken together, our data show that the D+Q cocktail helps to improve assisted reproductive technology and reproductive outcomes in POF.