Aspirin dosing using 15 grain enteric coated tablets

A high unit dose (15 grain/975 mg) enteric coated aspirin preparation was studied in normal individuals and patients with arthritis to determine how readily well tolerated, therapeutic (150-300 micrograms/ml) salicylate (SA) levels could be achieved using a twice daily dosing regimen. Of 36 participants enrolled, 33 (92%) achieved this goal (mean SA = 224 micrograms/ml), while in the remaining 3 an initially toxic level fell below the therapeutic range after reducing the dose by one tablet/day. Although the relationship between dose (mg/kg) and steady state SA levels was roughly linear (r = 0.74), in some subjects there was a striking incremental change in the SA level when the dose was adjusted. Over 90% of subjects taking a starting dose between 45-60 mg/kg/day achieved a therapeutic level. Thus, antiinflammatory therapy using 15 grain/975 mg enteric coated aspirin given twice daily appears to be feasible.

Effects of chlordane isomers administered to female mice during the neonatal period

In consideration of the influence that chlorinated hydrocarbon insecticides may exert on mammalian physiology, the present study was performed to investigate the effects of neonatal chlordane administration on body growth and endocrine development in female mice. Mice receiving 0.075 or 0.15 mg of alpha or gamma chlordane on day 2, 3, and 4 of life were observed to have growth rates depressed to varying extents depending on the concentration or the type of isomer that was utilized. Eye and vaginal opening in the neonatally treated mice were observed to be delayed to varying degrees, which were dependent on which isomer was used. The total effects observed in the neonatally treated mice were not found to reflect a dose-related response.