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Showing 1-30 of 95 results for "31041" within Papers
Determination of organochlorine compounds in human biological samples by GC-MS/MS.
Frias MM, et al.
Biomedical Chromatography, 18(2), 102- 111 (2004)
Qingxiang Zhou et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 48(3), 191-197 (2013-01-30)
The goal of the present study was to investigate the feasibility of silicon dioxide (SiO(2)) microspheres without special modification to enrich dichlorodiphenyltrichloroethane (DDT) and its main metabolites, p,p'-dichlorodiphenyl-2,2-dichloroethylene (p,p'-DDD) and p,p'-dichlorodiphenyldichloroethylene (DDE) in combination with gas chromatography-electron-capture detection. The experimental results
Shemsu Ligani et al.
Bulletin of environmental contamination and toxicology, 93(5), 591-595 (2014-09-28)
In this study, the levels of DDT and its metabolite residues were determined in chewable parts of Catha edulis plants grown in the southern part of Ethiopia. The levels of p,p'-DDT and p,p'-DDE were found to be in the range
Wen-Xiu Liu et al.
TheScientificWorldJournal, 2012, 897697-897697 (2012-12-20)
The levels of 18 organochlorine pesticides (OCPs) in the water from Lake Chaohu were measured by a solid phase extraction-gas chromatography-mass spectrometer detector. The spatial and temporal distribution, possible sources, and potential ecological risks of the OCPs were analyzed. The
Li Song et al.
Toxicology letters, 229(1), 284-291 (2014-06-27)
Dichlorodiphenyltrichloroethane (DDT), an organochlorine pollutant, is associated with several types of cancer. However, the relationship between DDT and colorectal cancer is uncertain. In this study, the impact of p,p'-DDT on colorectal cancer growth was evaluated using both in vitro and
Intan H Ishak et al.
Parasites & vectors, 8, 181-181 (2015-04-19)
Knowledge on the extent, distribution and mechanisms of insecticide resistance is essential for successful insecticide-based dengue control interventions. Here, we report an extensive resistance profiling of the dengue vectors Aedes aegypti and Aedes albopictus across Malaysia and establish the contribution
Natsuko Takakura et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 52, 153-162 (2012-11-21)
Although human populations may be constantly exposed to complex pesticide mixtures through their diet, the human health risk of pesticide exposure is currently assessed on the basis of toxicity data on individual compounds. To investigate the combined toxic effects of
Lifang Feng et al.
Aquatic toxicology (Amsterdam, Netherlands), 149, 126-132 (2014-03-13)
Analysis of metabolic mechanisms of dichlorodiphenyltrichloroethane (DDT) accumulation and degradation in microorganisms, which could be used to reduce its hazard to higher organisms at the higher in the food chain, have not been investigated. Robust resistance to DDT (grows well
Bo Su et al.
Oncology reports, 33(5), 2484-2494 (2015-03-31)
Diallyl disulfide (DADS) is characterized as an effective agent for the prevention and therapy of cancer, however, mechanisms regarding its anticancer effects are not fully clarified. In the present study, we compared the protein expression profile of gastric cancer MGC-803
Rachel M Kwiatkowska et al.
Gene, 519(1), 98-106 (2013-02-06)
With the exception of target site mutations, insecticide resistance mechanisms in the principle malaria vector Anopheles gambiae, remains largely uncharacterized in Burkina Faso. Here we detected high prevalence of resistance in Vallée du Kou (VK) to pyrethroids, DDT and dieldrin
Henrieta Patayová et al.
Environmental science and pollution research international, 20(12), 8557-8566 (2013-05-17)
The aim of this study was to relate placental transfer, quantified by the cord to maternal serum concentration ratio (C/M), of five organochlorine pesticides (OCP) hexachlorobenzene (HCB), β-hexachlorocyclohexane (β-HCH), γ-hexachlorocyclohexane (γ-HCH) , p,p'-DDT, p,p'-DDE and 15 polychlorinated biphenyl (PCB) congeners
M D Chanyshev et al.
Life sciences, 103(2), 95-100 (2014-04-15)
In this study, we determined the expression level of miRNAs and the induction of CYP1A1 and CYP2B1 in the livers and ovaries of female Wistar rats treated with DDT, benzo[a]pyrene (BP), and 3-methylcholanthrene (MC). This study compared CYP1A/2B induction and
Ting Wu et al.
Chemosphere, 110, 23-30 (2014-06-02)
While a number of studies have reported residual levels of persistent halogenated compounds (PHCs) in crocodilia, there is still a dearth of information on the Chinese alligator, a critically endangered crocodilian species. In the present study, several PHCs, including polybrominated
Xizhi Shi et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 972, 58-64 (2014-10-14)
A highly efficient and environment-friendly membrane-assisted solvent extraction system combined with gas chromatography-electron capture detector was applied in the simultaneous determination of 17 polychlorinated biphenyls and organochlorine pesticides in seawater samples. Variables affecting extraction efficiency, including extraction solvent used, stirring
Ezra J Mrema et al.
Toxicology, 307, 74-88 (2012-12-12)
Persistent organic pollutants comprised of organic chemicals like polychlorinated biphenyls, dibenzo-p-dioxins, dibenzofurans and organochlorinated pesticides which have many characteristics in common. Once released in the environment they resist physical, biological, chemical and photochemical breakdown processes and thus persist in the
Jabir Hussain Syed et al.
The Science of the total environment, 444, 491-497 (2013-01-09)
This study provides the first systematic data on the distribution of organochlorine pesticides (OCPs) in the soils and atmosphere of the Punjab province, Pakistan. Atmospheric concentrations of OCPs were estimated by using the polyurethane foam passive air sampling (PUF-PAS) technique.
Fengxiu Ouyang et al.
The American journal of clinical nutrition, 100(6), 1470-1478 (2014-11-21)
Although preconception 1,1,1-trichloro-2,2,bis(p-chlorophenyl)ethane (DDT) exposure and B-vitamin deficiencies have each been shown to negatively affect human reproductive outcomes, little is known about their joint effect. We sought to examine whether B-vitamin sufficiency protects against adverse effects of DDT on clinical
Vera Verhaert et al.
Environment international, 59, 290-302 (2013-07-23)
The present study aimed to evaluate the occurrence of persistent organic pollutants (POPs: (PCBs, PBDEs, DDTs, HCHs, CHLs and HCB) in sediments and biota from the middle Congo River Basin (CRB) and to investigate their trophic transfer through the aquatic
Anping Zhang et al.
The Science of the total environment, 505, 1142-1147 (2014-12-04)
The application of greenhouse vegetable cultivation has dramatically expanded worldwide during the last several decades. However, little information is available on the distribution and uptake of pesticides in greenhouse vegetables. To bridge this knowledge gap, the present study was initiated
Iván N Pérez-Maldonado et al.
Environmental monitoring and assessment, 185(11), 9287-9293 (2013-05-28)
The aim of this study was to evaluate the DDT, DDE, and 1-hydroxypyrene exposure levels of children living in communities located in southeastern Mexico. The study communities were Lacanja and Victoria in Chiapas state and Ventanilla in Oaxaca state. Children
Jian-yang Guo et al.
Environmental science and pollution research international, 20(8), 5471-5480 (2013-02-23)
Unique time trends of polycyclic aromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethanes (DDTs) were found in a dated sediment core from Dianchi Lake (DC), an urban lake in Southwest China. The temporal trend of PAHs in DC was not only different from
Cesilie Granum Castellanos et al.
Toxicology and applied pharmacology, 267(3), 247-255 (2013-01-22)
3-Methylsulfonyl-DDE (MeSO₂-DDE) is a potent adrenal toxicant formed from the persistent insecticide DDT. MeSO₂-DDE is widely present in human plasma, milk and fat, and in tissues of marine mammals. In the present study, we investigated endocrine-disrupting properties of MeSO₂-DDE in
A W Garrison et al.
Environmental pollution (Barking, Essex : 1987), 194, 224-234 (2014-08-26)
In the 1950s and 60s, discharges from a DDT manufacturing plant contaminated a tributary system of the Tennessee River near Huntsville, Alabama, USA. Regulatory action resulted in declaring the area a Superfund site which required remediation and extensive monitoring. Monitoring
Ainy Zehra et al.
The Science of the total environment, 506-507, 344-352 (2014-12-03)
Extensive monitoring of organo-halogenated contaminants (OHCs) from surface soils of different land-use types from Pakistan was carried out during 2010. The concentrations (ng g(-1); dry weight) and profiles clearly indicated the dominance of ∑DDT contaminants followed by the ∑HCHs, ∑30PCBs
Marijke de Cock et al.
Environment international, 70, 15-24 (2014-06-01)
Hormonal actions and activation of receptors involved in adipogenesis and brain development during the prenatal period may be affected by exposure to certain chemicals. Experimental studies have shown that amongst others polychlorinated biphenyl (PCB)-153 and dichlorodiphenyltrichloroethane (DDT) may have obesogenic
Le-Huan Yu et al.
Environmental pollution (Barking, Essex : 1987), 188, 118-123 (2014-03-04)
Contamination of organohalogen pollutants (OHPs), including dichlorodiphenyl trichloroethane and its metabolites (DDTs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenylethane (DBDPE), hexabromocyclododecanes (HBCDs), and dechlorane plus (DP) in three metropolises of China, Beijing, Wuhan, and Guangzhou, and a reference rural
Joshua C Kwekel et al.
Toxicology and applied pharmacology, 273(3), 532-541 (2013-10-08)
1,1,1-Trichloro-2,2-bis(2-chlorophenyl-4-chlorophenyl)ethane (o,p'-DDT) is an organochlorine pesticide and endocrine disruptor known to activate the estrogen receptor. Comprehensive ligand- and species-comparative dose- and time-dependent studies were conducted to systematically assess the uterine physiological, morphological and gene expression responses elicited by o,p'-DDT and
Yuliya A Kazantseva et al.
Toxicology and applied pharmacology, 271(2), 137-143 (2013-05-21)
Dichlorodiphenyltrichloroethane (DDT) is a widely used organochlorine pesticide and a xenoestrogen that promotes rodent hepatomegaly and tumours. A recent study has shown significant correlation between DDT serum concentration and liver cancer incidence in humans, but the underlying mechanisms remain elusive.
Hongxuan Lu et al.
Environmental monitoring and assessment, 187(1), 4159-4159 (2014-11-26)
The concentrations and distributions of hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), and polychlorinated biphenyls (PCBs) in an agricultural soil core in the Guanzhong Basin, China were determined. Overall, p,p'-DDT and p,p'-DDE were dominant contaminants and accounted for approximately 48.4 and 23.3% of
Esther Vizcaino et al.
Environment international, 65, 107-115 (2014-02-04)
Prenatal life is the most sensitive stage of human development to environmental pollutants. Early exposure to persistent organic pollutants (POPs) may increase the risk of adverse health effects during childhood. The mechanisms of transference of POPs during pregnancy are still
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