To evaluate the potential effects on growth and reproduction of perfluorinated compounds (PFCs), the zebrafish fry (F0, 14 d post-fertilization, dpf) were chronically exposed to various concentrations of PFOS (0, 10, 50 and 250 μg l–1) until sex mature (70 d) and effects on reproductive capacity and endocrine disrupted potential were assessed. No significant adverse effects on survival were obs...

Concentrations of perfluoroalkyl acids (PFAs) were measured in egg yolks of three species of birds, the little egret (Egretta garzetta), little ringed plover (Charadrius dubius), and parrot bill (Paradoxornis webbiana), collected in and around Lake Shihwa, Korea, which receives wastewaters from an adjacent industrial complex. Mean concentrations of perfluorooctanesulfonate (PFOS) ranged from 18...

We examined whether perfluorooctanoate (PFOA) or perfluorooctane sulfonate (PFOS) had obesogenic effects and if they increased spontaneous intestinal tumorigenesis in the mouse model C57BL/6J-Min/+ (multiple intestinal neoplasia) after in utero exposure. The dams were exposed to PFOA or PFOS (0.01, 0.1 or 3.0mg/kg bw/day) by po gavage on GD1-17. The Min/+ and wild-type offspring were terminated...

BACKGROUND There are limited data on the associations between maternal or newborn and child exposure to perfluoroalkyl acids (PFAAs), including perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS). This study provides an opportunity to assess the association between PFAA concentrations in mother-child pairs in a population exposed to PFOA via drinking water. OBJECTIVES We aimed to d...

BACKGROUND Perfluorooctanoic acid (PFOA, also known as C8) and perfluorooctane sulfonate (PFOS) are stable compounds with many industrial and consumer uses. Their persistence in the environment plus toxicity in animal models has raised concern over low-level chronic exposure effects on human health. OBJECTIVES We estimated associations between serum PFOA and PFOS concentrations and thyroid di...

Perfluorooctane sulfonate (PFOS) is a persistent organic pollutant that toxic and bio-accumulative. Previously, we used hydrated electrons (eaq–) generated by the UV photolysis of nitrilotriacetic acid (NTA) to initiate photoreductive decomposition PFOS. However, due protonation NTA scavenging effect H+ on eaq–, this process relies highly alkaline conditions. Herein, report an enhanced system b...

Perfluoroalkyl acids (PFAAs) are a group of persistent organic substances that are surface active and water and fat/oil repellent. Due to the wide use and persistence of PFAAs they are present everywhere in the environment, and humans are exposed via food, drinking water and the use of products containing PFAAs and related compounds. We investigated blood serum levels of ten perfluoroalkyl carb...

STUDY QUESTION Is exposure to perfluorinated compounds (PFCs) associated with testicular function (reproductive hormone levels and semen quality) in healthy men? SUMMARY ANSWER PFOS levels were significantly negatively associated with serum testosterone (total and calculated free), but not with any other reproductive hormones or semen quality. WHAT IS KNOWN ALREADY In animals, some PFCs hav...

Results Among fifteen PFCs analyzed, perfluorohexane sulfonic acid (PFHxS), and perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorodecanoic acid (PFDA) were detected in >90% of the serum samples. The number of chemicals above median concentrations among these 5 PFCs were graded on a scale of 0 to 5, and classified into exposure (0) (...

Although Japan’s planted forest resources are mature, efficient timber production and reforest postharvest hindered by the small-scale ownership private owners’ (PFOs’) low willingness to engage in management. A New Scheme of Forest Management (NSFM) has been established under which municipalities can aggregate management rights PFOs with future intentions for Therefore, this study explores soc...