Biochemical, molecular, and physiological assessments of crude oil dietary exposure in sub-adult red drum (Sciaenops ocellatus).

A 14-day exposure study in which sub-adult red drum (Sciaenops ocellatus) were fed a petroleum crude oil-treated pellet feed was conducted to assess the potential effects of ingesting an oil-contaminated food source. Though food consumption decreased, significant polycyclic aromatic hydrocarbons accumulated in the body and liver, which did not affect the body and liver's fatty acid composition. In the red drum given the crude oil-treated feed, a significant decrease in the RNA:DNA growth rate index was noted, while only subtle changes in body and liver lipid composition were seen.

Nonlethal Biomarkers of Oxidative Stress in Oiled Sediment Exposed Southern Flounder (): Utility for Field-Base Monitoring Exposure and Potential Recovery.

The Deepwater Horizon (DWH) blowout resulted in the deposition of toxic polycyclic aromatic hydrocarbons (PAHs), in the coastal sediments of the Gulf of Mexico. The immediate effects on an ecosystem from an oil spill are clearly recognizable, however the long-term chronic effects and recovery after a spill are still not well understood. Current methodologies for biomonitoring wild populations are invasive and mostly lethal.

[Local anesthetics. CVI. Preparation and effect of (+/-)-trans-[2-(piperidinomethyl) cyclopentyl] alkyl, alkoxy and halogen substituted esters of phenylcarbamic acid].

Within the framework of the research of potential local anaesthetics, five compounds from the group of (+/-)-trans-[2-(piperidino-methyl)cyclopentyl]alkyl, alkoxy and chloroalkyl esters of phenylcarbamic acid were prepared. The final compounds were obtained by addition of (+/-)-trans-2-(piperidinomethyl)cyclopentanol to the corresponding substituted phenylisocyanates. They were isolated in the form of salts with hydrochloric acid.

Study of local anaesthetics. Part 98(3): Preparation and local anaesthetic activity of 4-alkylpiperazinoethyl esters of o-heptyloxyphenylcarbamic acid.

During the course of study of variations in the basic moiety of heptacainium chloride 10 derivatives of 4-alkylpiperazinoethyl esters of o-heptyloxyphenylcarbamic acid were prepared. Pharmacological investigation indicated that practically all the new compounds were several times more active than standards (cocaine and procaine). The most effective compound was 1-[2-(o-heptyloxyphenylcarbamoyloxy)ethyl]-4-butyl-piperazinium dichloride, which was 142 times more active than cocaine and 266 times more active than procaine.