[3 1/2 years of roentgen certificate].

This study was intended to show the acceptance of the x-ray certificate ("Röntgenpass") by patients since its introduction 3 1/2 years ago. The study revealed that only 24.3% were informed about this certificate, although 69.

Recombinant interleukin-1 (IL-1) stimulates prostaglandin E2 production by osteoblastic cells: role of calcium, calmodulin, and cAMP.

Interleukin-1 (IL-1) has been previously shown to stimulate prostaglandin E2 (PGE2) production by osteoblastic cells. This IL-1 effect has also been shown to be potentiated by parathyroid hormone (PTH), which activates both the calcium and the cAMP signal transduction pathways in osteoblastic cells. In the present study, the role of calcium, calmodulin, and cAMP in potentiating the IL-1 effect was examined.

Recombinant interleukin-1 stimulates prostaglandin E2 production by osteoblastic cells: synergy with parathyroid hormone.

Recombinant mouse IL-1 (Interleukin-1) has been shown to be capable of stimulating prostaglandin E2 (PGE2) production by isolated rat osteoblastic cells in a dose-dependent manner. The rapidity of the effect (1 hour) and the potency of IL-1 (5 x 10(-12) M) in producing this effect suggest that IL-1 may exert some of its effects on bone via PGE2. Parathyroid hormone (PTH) appears to have a strong synergistic effect with IL-1.

The clearance capacity of the canine liver for a portal vein endotoxin infusion.

The capacity of the livers of anesthetized dogs to clear a portal vein infusion of Escherichia coli 026 endotoxin was evaluated. Appearance of the endotoxin in arterial blood was quantitated by immunoradiometric assay. Various hemodynamic and metabolic parameters were monitored throughout the infusion to corroborate the development of systemic endotoxemia.

Rapid alterations in substrate profiles after partial hepatectomy in the rat.

We compared alterations in circulating levels of insulin and glucagon and metabolic fuels in response to partial (70%) hepatectomy (HP) and sham hepatectomy (SHP) in fasting rats and in unanesthetized, fasting control rats. Within 15 minutes, animals in the HP group were hypoglycemic compared with the SHP and control groups. After 30 minutes, the insulin concentration and the insulin-glucagon molar ratio (IGR) rose in the HP group.