Regulation of 13(S)-hydroxyoctadecadienoic acid biosynthesis in Syrian hamster embryo fibroblasts by the epidermal growth factor receptor tyrosine kinase.

Metabolism of arachidonic and linoleic acid can be regulated by polypeptide growth factors in a variety of cell types. In Syrian hamster embryo (SHE) fibroblasts, epidermal growth factor (EGF) stimulates the conversion of exogenous linoleic acid to 13(S)-hydroxyoctadecadienoic acid (HODE). Inhibition of 13-HODE biosynthesis blocks the EGF-mitogenic response in SHE cells, and 13-HODE and its hydroperoxy precursor are potent and highly specific enhancers of EGF-dependent DNA synthesis.

Felbamate-associated fatal acute hepatic necrosis.

Thirty-six cases of hepatic toxicity associated with felbamate therapy have been collected by the Food and Drug Administration. Five patients died. We describe a case of massive acute hepatic necrosis and death within 40 days of initiation of felbamate therapy for a generalized tonic-clonic seizure disorder.

Firearm-related hunting fatalities in North Carolina: impact of the 'Hunter Orange' Law.

In the decade spanning 1983 through 1992, 68 people were killed by firearms while hunting in North Carolina (average of 1.66 fatalities/100,000 licenses issued). Of these, 58 deaths involved two parties, a shooter and a victim.

Caterpillar bodies of porphyria cutanea tarda ultrastructurally represent a unique arrangement of colloid and basement membrane bodies.

Caterpillar bodies are eosinophilic, periodic acid-Schiff (PAS)-positive globules arranged in a linear fashion in the epidermis overlying subepidermal blisters of porphyria cutanea tarda (Am J Dermatopathol 1993;15:199-202). We retrospectively studied by transmission electron microscopy nine cases of porphyria cutanea tarda (PCT) that demonstrated caterpillar bodies. We identified three components of the eosinophilic bodies: degenerating keratinocytes, colloid bodies, and basement membrane bodies.