Search results for "PFOS"
showing 6 items of 6 documents
Exposure to perfluoroalkyl substances and thyroid function in pregnant women and children: A systematic review of epidemiologic studies
2017
Introduction: Thyroid hormones (THs) are especially important for brain maturation and development during the fetal period and childhood. Several epidemiological studies have assessed the possible association between exposure to perfluoroalkyl substances (PFAS) and thyroid outcomes during the early stages of life. We aimed to review this evidence. Methods: We conducted a systematic review in compliance with the PRISMA Statement (search conducted in PubMed and Embase, as well as in the citations of the selected articles). We chose studies if they dealt with thyroid-stimulating hormone (TSH), triiodothyronine (T3), thyroxin (T4), or thyroid dysfunctions, and perfluorohexane sulfonate (PFHxS),…
First-trimester maternal concentrations of polyfluoroalkyl substances and fetal growth throughout pregnancy
2019
Background: Several studies have investigated the possible association between prenatal exposure to perfluoroalkyl substances (PFASs) and birth anthropometry. However, none has assessed fetal size longitudinally. We studied the possible association between PFASs and fetal biometry. Methods: In 1230 mother-child pairs of three cohorts from the Spanish INMA-Project, we analyzed perfluorohexanesulfonic acid (PFHxS), perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), and perfluorononanoic acid (PFNA) in first-trimester maternal plasma (collection: 2003-2008). We measured abdominal circumference (AC), femur length (FL), biparietal diameter (BPD), and estimated fetal weight (EFW)…
Prenatal exposure to perfluoroalkyl substances and birth outcomes in a Spanish birth cohort
2017
BACKGROUND: Prenatal perfluorooctanoate (PFOA) exposure has been associated with reduced birth weight but maternal glomerular filtration rate (GFR) may attenuate this association. Further, this association remains unclear for other perfluoroalkyl substances (PFAS), such as perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS), and perfluorononanoate (PFNA). We estimated associations between prenatal PFAS exposure and birth outcomes, and the influence of GFR, in a Spanish birth cohort. METHODS: We measured PFHxS, PFOS, PFOA, and PFNA in 1st-trimester maternal plasma (years: 2003-2008) in 1202 mother-child pairs. Continuous birth outcomes included standardized weight, length, he…
Perfluoroktānsulfoskābes (PFOS) un tās atvasinājumu bioakumulācija Latvijas upju baseinu apgabalos
2020
Bakalaura darbs ,,Perfluoroktānsulfoskābes (PFOS) un tās atvasinājumu bioakumulācija Latvijas upju baseinu apgabalos’’ ar mērķi noteikt PFOS koncentrācijas Baltijas jūras piekrastes asaros Perca fluviatilis, un noskaidrot iespējamo upju pienesi kā PFOS avotu Baltijas jūrā, salīdzinot ar sateces baseinu biotas koncentrācijām. Darbā ir apkopota informācija par PFOS un tās atvasinājumu īpašībām, pārneses iespējām dabā, akumulēšanos dzīvajos organismos un veikts pasaules pētījumu apskats. Pētnieciskajā daļā tika iegūtas piekrastes asaru aknu PFOS koncentrācijas, veikta iekšzemes ūdeņu analīze pa upju baseinu apgabaliem un rezultātu salīdzināšana. PFOS un tās atvasinājumi konstatēti visos biotas…
Un établissement rural mérovingien à Delle "La queue au loup" (territoire de Belfort)
2010
This merovingian establishment discovered during an archaeological evaluation to the west of the town of Delle in the Belfort territory is located on the Batte hillside about 300 m from the large Gallo-roman domain on the opposite slope of the valley. This settlement is characterised by a large edifice built of stone and perishable materials, which replaces a timber framed building. The building covers 230 m2 and vestiges of the floors, partitions and interior fittings are preserved which is rare for the period. The analysis of phosphate levels has given indications as to the function of each room. The finds are modest, but they do date, along with radiocarbon analysis, the settlement from …