Effect of intermittent versus continuous parathyroid hormone in the cardiovascular system of rats.

Objective: PTH increases ionic calcium concentration in the serum, acting primarily on bone and kidney cells through the type 1 PTH receptor. Interestingly, PTH stimulates bone formation when administrated intermittently but causes severe bone loss with continuous administration. Daily injections of PTH are used as the most promising anabolic agent in the treatment of severe osteoporosis.

Characterization of high molecular weight plasma protein complexes induced by clotting factor rFXIII-treatment in the cynomolgus monkey.

Background: In cynomolgus monkeys, suprapharmacological doses of clotting recombinant factor XIII (rFXIII) cause a generalized coagulopathy, associated with formation of circulating high molecular weight protein complexes (HMEX). HMEX consist of plasma protein substrates cross-linked by FXIII transglutaminase activity.

Objective: To characterize HMEX, with a view to develop safety biomarker assays.

Preclinical toxicity biomarkers for combination treatment with clotting factors rFXIII and rFVIIa.

Combination treatment with the clotting factors recombinant activated factor VII (rFVIIa), serine protease, and recombinant factor XIII (rFXIII), protransglutaminase, is being explored for haemostatic therapy. We performed a single-dose toxicology study in the cynomolgus monkey, with four dose groups receiving 0.1 + 0.