Childhood obesity is a particular concern in developed countries such as the United States, the United Kingdom, Canada, and certain European countries. According to the World Health Organization (WHO), approximately 6% of children under the age of 5 worldwide were obese in 2016, a figure that continues to rise. The pathophysiology of pediatric obesity can be explained by several interconnected biological and behavioral mechanisms. In particular, it involves dysfunctions in the hormones that regulate appetite and satiety, as well as dysfunctions in lipid metabolism. Per- and polyfluoroalkyl substances (PFAS) are a large family of synthetic chemical compounds. The main PFAS are perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorononanoic acid (PFNA), and perfluorohexanesulfonic acid (PFHxS). PFAS are present in many everyday consumer products. Bisphenol A (BPA) is a chemical compound used primarily in the manufacture of plastics and resins. It is commonly found in polycarbonate plastics, used to make food containers and water bottles, as well as in epoxy resins, which are used to coat the inside of food cans and water pipes. Non-persistent pesticides, such as organophosphates and polychlorinated biphenyls, are chemicals used primarily in agriculture to control insects and other pests. There are arguments suggesting that PFAS, bisphenol A, and non-persistent pesticides may play a role in the onset of pediatric obesity, particularly by acting.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
80
Inclusion visit: during the routine blood test, one additional tube of blood will be collected for the study.
Inclusion visit: a urine sample will be collected for the study.
Inclusion visit: a hair sample will be taken from the patient.
CHRU de Tours
Tours, France
CHRU de Tours
Tours, France
PFOA concentration
Difference in plasma PFOA concentration measured in ng/mL between obese and non-obese children (control group). PFOA will be measured in plasma using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) at the Laberca laboratory.
Time frame: At the enrollment visit
PFOS concentration
Difference in plasma concentration of perfluorooctane sulfate (PFOS) measured in ng/mL between obese children and non-obese children.
Time frame: At the enrollment visit
PFNA concentration
Difference in plasma concentration of perfluorononanoic acid (PFNA) measured in ng/mL between obese children and non-obese children
Time frame: At the enrollment visit
PFHxS concentration
Difference in plasma concentration of perfluorohexanesulfonic acid (PFHxS) measured in ng/mL between obese children and non-obese children.
Time frame: At the enrollment visit
BPA concentration
Differences in urinary BPA concentrations measured in ng/mL between obese and non-obese children
Time frame: At the enrollment visit
Non-persistent pesticides concentration
Differences in urinary concentrations of non-persistent pesticides (organophosphates and polychlorinated biphenyls) in ng/mL between obese and non-obese children
Time frame: At the enrollment visit
Number of DNA breaks
Differences in the number of DNA breaks in hair follicles between obese and non-obese children
Time frame: At the enrollment visit
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