Many factors are suspected in the global surge in type 2 diabetes, among them exposures to toxic chemicals including polychlorinated biphenyls (PCBs). To investigate the potential mechanisms of the type 2 diabetes/PCB connection, a team of investigators studied two coplanar PCBs, PCB-77 and PCB-126 [EHP 121(1):105–110; Baker et al.]. They found, via in vitro and in vivo studies with male mice, ...

Title of Document: EFFECTS OF PCB EXPOSURE ON HEPATIC GENE EXPRESSION AND ENZYME ACTIVITY IN AVIAN SPECIES Meredith E. Bohannon, Doctor of Philosophy, 2014 Directed By: Professor M.A. Ottinger, Department of Animal and Avian Sciences Polychlorinated biphenyls (PCBs) are a class of anthropogenic chemical compounds used by industry from the 1940s until the 1970s. Two General Electric plants at Fo...

the usage and production of polychlorinated biphenyls (pcbs) was banned in argentina in2002, approximately twenty to thirty years later than in other countries. a total of 29 sediment samples (upto 14 m deep) were analyzed for a mix of seven individual pcbs in a time series for over more than one year in twelve selected locations, including harbors, recreational docks and several industrialized...

Breastfed infants sit at the top of the food chain for the simple reason that their nourishment comes from other humans. Through biomagnification, environmental chemicals such as polychlorinated biphenyls (PCBs) are passed up the food chain to the nursling. Although epidemiologic studies have established an association between prenatal PCB exposures and neurodevelopmental and neurobehavioral pr...

In the last decade advances in the analytic methods for quantification of polychlorinated biphenyls (PCBs) have resulted in widespread availability of congener-specific analysis procedures, and large amounts of data on PCB congener profiles in soil, air, water, sediments, foodstuffs, and human tissues have become available. These data have revealed that the PCB residues in environmental media a...

Vasoconstriction of the uterine arteries, hypertonus of the uterus, and the direct toxic effects of a local anesthetic on the fetus or a combination of the above have been presented as etiological factors of fetal bradycardia following paracervical block. The reduce fetal side-effects a superficial and lowdosage technique of PCB have been advocated. We have studied the effects of 25 mg of bupiv...

The goal of this study was to investigate and identify natural recovery processes responsible for the recovery of polychlorinated biphenyl (PCB)-contaminated sediments at Lake Hartwell, SC. Ten sediment cores were collected from predetermined transect locations. Cores were analyzed by depth for Pb, Cs, and PCBs. Pb and Cs were used to date sediments in order to determine sediment accumulation r...

SUMITOMO KAGAKU 2008-I persistent organic pollutant (POP) together with dioxins and nine chlorine-based agricultural chemicals that have similar properties to PCBs, such as DDT and chlordane. Furthermore, in order to prevent pollution from spreading globally, an international convention concerning usage regulations and disposal of POPs (the Stockholm Convention: POPs Convention) was adopted in ...

We present an investigation into the effect of the motion of a printed circuit board (PCB) on the response of a microelectromechanical system (MEMS) device to shock loads. A two-degrees-of-freedom model is used to model the motion of the PCB and the microstructure, which can be a beam or a plate. The mechanical shock is represented as a single point force impacting the PCB. The effects of the f...

In surveys of three groups of workers occupationally exposed to polychlorinated biphenyls (PCBs) serum PCB concentrations were quantitated as lower chlorinated biphenyls (L-PCBs) and higher chlorinated biphenyls (H-PCBs). Serum L-PCB and H-PCB concentrations were many times greater among workers employed in power capacitor manufacturing than exposed areas. Statistically significant positive cor...