Merck
Wyszukiwanie zaawansowane
Wyszukiwarka struktur
Search Within
Zastosowane filtry
Słowo kluczowe:'33607'
Wyświetlanie 1-30 of 96 wyniki(-ów) for "

33607

" w ciągu Dokumenty
Jiangfei Chen et al.
Aquatic toxicology (Amsterdam, Netherlands), 150, 124-132 (2014-03-29)
As a persistent organic contaminant, perfluorooctanesulphonic acid (PFOS) has been widely detected in the environment, wildlife, and humans. The present study revealed that zebrafish embryos exposed to 16 μM PFOS during a sensitive window of 48-96 hour post-fertilization (hpf) disrupted
Sarah Dee Geiger et al.
American journal of epidemiology, 177(11), 1255-1262 (2013-04-05)
Hyperuricemia in children is associated with increased risk of high blood pressure, metabolic syndrome, and future cardiovascular disease. Serum perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) levels have been shown to be positively associated with hyperuricemia in adults, but the
Francisca Pérez et al.
Environment international, 59, 354-362 (2013-07-31)
Perfluoroalkyl substances (PFASs) are environmental pollutants with an important bioaccumulation potential. However, their metabolism and distribution in humans are not well studied. In this study, the concentrations of 21 PFASs were analyzed in 99 samples of autopsy tissues (brain, liver
Andrew M Watkins et al.
Molecular and cellular endocrinology, 400, 90-101 (2014-12-03)
The 3T3-L1 preadipocyte culture system has been used to examine numerous compounds that influence adipocyte differentiation or function. The perfluoroalkyl acids (PFAAs), used as surfactants in a variety of industrial applications, are of concern as environmental contaminants that are detected
Mandy Fisher et al.
Environmental research, 121, 95-103 (2012-12-26)
Perfluorinated compounds (PFCs) are man-made chemicals that are heat stable, non-flammable and able to repel both water and oils. Biomonitoring research shows global distribution in human, animal and aquatic environments of these chemicals. PFCs have been shown to activate the
Marcus Nordén et al.
Environmental science and pollution research international, 20(11), 8021-8030 (2013-03-07)
In the eggs and developing chick livers in the two wild bird species, great cormorant and herring gull, the concentrations of a range of 15 perfluoroalkyl acids (PFAAs) were determined. Eggs of the two species were collected from Lake Vänern
Gang Pan et al.
The Science of the total environment, 487, 778-784 (2013-12-12)
The distribution in water and sediment, the sources/sinks and the risk of perfluorinated compounds (PFCs) in Lake Taihu, China were investigated. The total PFCs concentration was 164 to 299 ng L(-1) in water and 5.8 to 35 ng g(-1) (dw)
Shuangwei Xie et al.
Environment international, 59, 336-343 (2013-07-31)
Perfluorooctane sulfonate (PFOS) and related chemicals (collectively "PFOS equivalents") have been released to the environment through widespread consumer use and disposal of PFOS-containing products like carpet, leather, textiles, paper, food containers, household cleansers, etc. Accordingly, in addition to PFOS-related industries
Jia Bao et al.
Environmental science and pollution research international, 21(12), 7650-7655 (2014-03-14)
Severe perfluoroalkyl acid (PFAA) contamination resulting from the fast-growing semiconductor, electrochemical, and optoelectronic industries has been determined in the river water in the vicinity of the Taipei area, Taiwan, during recent years. However, little is known about body burdens of
Anne P Starling et al.
American journal of epidemiology, 179(7), 824-833 (2014-02-22)
Perfluoroalkyl substances (PFAS) are persistent and ubiquitous environmental contaminants, and human exposure to these substances may be related to preeclampsia, a common pregnancy complication. Previous studies have found serum concentrations of PFAS to be positively associated with pregnancy-induced hypertension and
Takeo Sakurai et al.
Environmental toxicology and chemistry, 32(9), 2009-2017 (2013-05-03)
The authors investigated the kinetics of transfer of perfluorooctane sulfonate (PFOS) from water, suspended sediment, and bottom sediment to a marine benthic fish, the marbled flounder (Pseudopleuronectes yokohamae). Fish were exposed in 3 treatments to PFOS in combinations of these
Sarah B Gewurtz et al.
Environment international, 59, 183-200 (2013-07-09)
In Canada, perfluoroalkyl acids (PFAAs) have been the focus of several monitoring programs and research and surveillance studies. Here, we integrate recent data and perform a multi-media assessment to examine the current status and ongoing trends of PFAAs in Canada.
L-M L Toms et al.
Environment international, 71, 74-80 (2014-07-02)
Some perfluoroalkyl and polyfluoroalkyl substances (PFASs) have become widespread pollutants detected in human and wildlife samples worldwide. The main objective of this study was to assess temporal trends of PFAS concentrations in human blood in Australia over the last decade
Victor A Arias E et al.
Environmental monitoring and assessment, 187(1), 4111-4111 (2014-11-20)
Although the use of perfluorooctane sulfonic acid (PFOS)/perfluorooctanoic acid (PFOA)-based aqueous fire-fighting foams (AFFF) has been banned due to their persistence, bioaccumulation and toxicity to biota, PFOS and PFOA are still present at significant levels in the environment due to
Beth Javins et al.
Environmental science & technology, 47(3), 1606-1613 (2013-01-01)
Perfluoroalkyl substances are manmade chemicals used in many consumer products and have become ubiquitous in the environment. Animal studies and a limited number of human studies have demonstrated developmental effects in offspring exposed to perfluoroalkyl substances in utero, but the
Xiaofei Wang et al.
Mutation research, 754(1-2), 51-57 (2013-04-27)
Perfluorooctane sulfonate (PFOS) was listed as one of the persistent organic pollutants (POPs) in Stockholm Convention in 2009. Recent evidence showed that PFOS could induce apoptosis both in vivo and in vitro. However, the apoptotic mechanisms induced by PFOS as
Jinxia Liu et al.
Environment international, 61, 98-114 (2013-10-16)
Polyfluoroalkyl chemicals containing perfluoroalkyl moieties have been widely used in numerous industrial and commercial applications. Many polyfluoroalkyl chemicals are potential perfluoroalkyl acid (PFAA) precursors. When they are released to the environment, abiotic and microbial degradation of non-fluorinated functionalities, polyfluoroalkyl and
Lesa L Aylward et al.
Environment international, 68, 127-138 (2014-04-15)
Australian national biomonitoring for persistent organic pollutants (POPs) relies upon age-specific pooled serum samples to characterize central tendencies of concentrations but does not provide estimates of upper bound concentrations. This analysis compares population variation from biomonitoring datasets from the US
Mark R Earnshaw et al.
Environment international, 70, 25-31 (2014-06-01)
The lifecycle, sources and fate of perfluorooctane sulfonate (PFOS) continue to generate scientific and political interest, particularly since PFOS was listed by the Stockholm Convention and largely restricted in Europe. It continues to be detected in aquatic environments, with only
Patricia A Fair et al.
Environmental toxicology and chemistry, 32(4), 736-746 (2013-01-17)
Perfluoroalkyl compounds (PFCs) are ubiquitous, persistent chemical contaminants found in the environment, wildlife, and humans. Despite the widespread occurrence of PFCs, little is known about the impact these contaminants have on the health of wildlife populations. The authors investigated the
Yin-Ming Li et al.
Environmental technology, 35(17-20), 2556-2568 (2014-08-26)
This study was carried out to develop a cost-effective and practicable sorbent for application in abrupt perfluorooctane sulphonate (PFOS) pollution accidents. The main merit of this work was that a waste material, namely construction and demolition (C&D) waste, was employed
Bo Xu et al.
Toxicology, 328, 160-167 (2014-12-17)
Perfluorooctane sulfonate (PFOS) poses potential risks to early development, but the molecular mechanisms how PFOS affects embryonic development are still unclear. Mouse embryoid bodies (mEBs) provide ideal models for testing safety or toxicity of chemicals in vitro. In this study
Maria Grazia Porpora et al.
International journal of environmental research and public health, 10(2), 699-711 (2013-02-26)
The aim of this study was to characterize the placental transfer of some environmental pollutants, and to explore the possibility of quantitatively predicting in utero exposure to these contaminants from concentrations assessed in maternal blood. Levels of toxic substances such
A Hagenaars et al.
Aquatic toxicology (Amsterdam, Netherlands), 157, 225-235 (2014-12-03)
Perfluorooctane sulphonate (PFOS) is one of the most commonly detected perfluorinated alkylated substances in the aquatic environment due to its persistence and the degradation of less stable compounds to PFOS. PFOS is known to cause developmental effects in fish. The
Guangzhi He et al.
Journal of colloid and interface science, 405, 189-194 (2013-06-14)
The surface-associated structures and growth modes of perfluorooctane sulfonate (PFOS) at water-rutile TiO2 interfaces were defined by molecular dynamics (MD) simulations. The results showed that a compact PFOS layer was generated at the rutile surfaces, and the assembling structures and
Sara Persson et al.
Environment international, 59, 425-430 (2013-08-10)
This study investigates the influence of biological and environmental factors on the concentrations of perfluoroalkyl acids (PFAAs) in a top predator; the American mink. Perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS) and perfluoroalkyl carboxylates (PFCAs) with C8-C13 perfluorinated
Eva Gorrochategui et al.
Analytica chimica acta, 854, 20-33 (2014-12-07)
A lipidomic study was developed in a human placental choriocarcinoma cell line (JEG-3) exposed to tributyltin (TBT) and to a mixture of perfluorinated chemicals (PFCs). The method was based on the application of multivariate curve resolution-alternating least squares (MCR-ALS) to
Yifeng Zhang et al.
Environment international, 68, 185-191 (2014-04-22)
A total of 100 serum samples from 50 new couples (none of the females in this study has ever been pregnant) in Tianjin, North China, were analyzed for eleven perfluoroalkyl acids (PFAAs) with isomer-specific method. Among all samples, total perfluorooctanesulfonate
Kirsten T Eriksen et al.
PloS one, 8(2), e56969-e56969 (2013-02-27)
Perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS) are used in a variety of consumer products and have been detected worldwide in human blood. Recent studies mainly of highly exposed populations have indicated that PFOA and PFOS may affect serum cholesterol levels
Changhui Liu et al.
Environmental toxicology and chemistry, 32(10), 2226-2233 (2013-06-15)
Perfluorinated chemicals (PFCs) are a group of compounds with varying carbon chains and functional groups. Currently, available toxicity studies of PFCs are limited mainly to dominant species. While many other PFCs are detected in the environment and biota, it is
Strona 1 z 4
Strona 1 z 4