Thrombopoietin (Tpo) Levels in Neonatal Osteopetrosis

Metabolism of thrombopoietin (TPO) in vivo: determination of the binding dynamics for TPO in mice.

Previous in vivo studies have established that plasma thrombopoietin (TPO) levels are regulated by binding to c-Mpl on platelets and that, in vitro, platelets bind and degrade TPO. To determine if the in vivo metabolism of TPO was specific and saturable, we injected normal CD-1 mice IV with trace amounts of 125I-rmTPO with or without a saturating concentration of rmTPO. The amount of radioactiv...

Thrombopoiesis and thrombopoietin: the significance of "non-Tpo" cytokines.

Thrombopoiesis and Thrombopoietin: The Significance of ”non-Tpo“ Cytokines

Malignant infantile osteopetrosis presenting with neonatal hypocalcaemia.

Presentation characteristics were reviewed in 14 children from 12 families with malignant infantile osteopetrosis seen at two large referral centres for bone marrow transplantation. Children from six of these families presented initially with symptoms of hypocalcaemia. These comprised early or late neonatal convulsions in six cases (corrected serum calcium < 1.5 mmol/l), and vomiting and irrita...

Osteopetrosis Presenting with Neonatal Thrombocytopenia: A Case Report

Background: Osteopetrosisis an inherited and rare bone disease, characterized by the impairment ofbone modeling and remodeling and the failure of osteoclasts to resorb bone. It also results in skeletal fragility despite increased bone mass, and may cause hematopoietic insufficiency, disturbed tooth eruption, nerve entrapment syndromes, and growth impairment. The infantile form of the disease is...