Parathyroid hormone-related protein in hypercalcemia associated with hematological malignancy
Abstract
Hypercalcemia is an important complication in multiple myeloma as well as T-cell leukemia/lymphoma, and is moderately common in high and intermediate grade non-Hodgkin's lymphoma. The underlying mechanism has been unclear because the neoplastic cells are usually present in the bone marrow, where they are in a position to produce short range effects on bone resorption which are difficult to identify. This contrasts with the situation in hypercalcemia associated with non-metastatic carcinoma, where it has been clearly demonstrated that the most common cause is release from the tumor of a humoral mediator, Parathyroid Hormone-related Protein (PTHrP). Roles have been advocated in multiple myeloma for release of a number of other cytokines with osteolytic capacity on the basis of their enhancement of osteolytic activity in cultured fetal rat bone, although a causal relationship in patients has not been established. PTHrP has more recently been implicated in the genesis of hypercalcemia in patients with hematological malignancies by the demonstration in a proportion of cases of increased circulating levels of PTHrP, comparable to those in hypercalcemia due to cancer. Immunohistochemical studies indicate neoplastic hemopoietic cells c...Continue Reading
References
Parathyroid hormone-related protein as a cause of hypercalcemia in a B-cell type malignant lymphoma.
Circulating levels of cytokines that modulate bone resorption: effects of age and menopause in women
Citations
Parathyroid hormone-related protein serves as a prognostic indicator in oral squamous cell carcinoma
Related Concepts
Related Feeds
CNS Lymphoma
In CNS lymphoma, cancerous cells from lymph tissues or other parts of the body form tumors in the brain and/or spinal cord. Here is the latest research on this rare non-Hodgkin lymphoma.
B-Cell Lymphoma
B-cell lymphomas include lymphomas that affect B cells. This subtype of cancer accounts for over 80% of non-Hodgkin lymphomas in the US. Here is the latest research.
Blood And Marrow Transplantation
The use of hematopoietic stem cell transplantation or blood and marrow transplantation (bmt) is on the increase worldwide. BMT is used to replace damaged or destroyed bone marrow with healthy bone marrow stem cells. Here is the latest research on bone and marrow transplantation.