45Calcium metabolism and circulating levels of iPTH (N-terminal fragment) and iCT were investigated in normocalcemic patients with multiple myeloma (12) in an attempt to ascertain early changes in calcium metabolism, which may occur before hypercalcemia develops. The same parameters were also investigated in patients with senile osteoporosis (11), corticosteroid-induced osteoporosis (6), Paget's disease (6) and controls without bone disorders (13). In the myeloma group, the exchangeable calcium pool (7,678 +/- 321 mg) was significantly higher (P less than 0.01) than in the control group (4,405 +/- 374 mg), the senile osteoporosis group (4,108 +/- 407 mg) and the corticosteroid-induced osteoporosis group (3,015 +/- 161 mg) and nearly as high as in the Paget's disease group (8,876 +/- 1,173 mg). Calcium pool turnover rate was higher in the myeloma group than in controls, as were bone anabolism and bone catabolism, although differences were not statistically significant. There were no statistically significant differences among the groups in the plasma iPTH or iCT, although the mean value of the latter was higher in the myeloma group than in controls (86 +/- 24 vs. 47 +/- 13 pg/ml). These data suggest that an increase in the exchangeable calcium pool and in turnover rate may occur early in the course of multiple myeloma, preceding the development of hypercalcemia. The role of some homeostatic mechanisms in maintaining normal plasma calcium levels in multiple myeloma despite increased bone calcium resorption is discussed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Elevated LIF and JAK-STAT activation drive severe COVID-19 in myeloma patients receiving the BCMA-CD3 bispecific antibody Elranatamab.
J Transl Med
January 2025
Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Beijing, 100730, China.
Background: Immunotherapy is a significant risk factor for severe COVID-19 in multiple myeloma (MM) patients. Understanding how immunotherapies lead to severe COVID-19 is crucial for improving patient outcomes.
Methods: Human protein microarrays were used to examine the expression of 440 protein molecules in MM patients treated with bispecific T-cell engagers (BiTe) (n = 9), anti-CD38 monoclonal antibodies (mAbs) (n = 10), and proteasome inhibitor (PI)-based regimens (n = 10).
Exploring the Clinical Diversity of Castleman Disease and TAFRO Syndrome: A Japanese Multicenter Study on Lymph Node Distribution Patterns.
Am J Hematol
January 2025
Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Individuals diagnosed with Castleman disease (CD) and TAFRO syndrome (characterized by thrombocytopenia, anasarca, fever, bone marrow fibrosis, and organomegaly) displays a wide range of clinical symptoms, including varying patterns of lymph node enlargement, systemic inflammation, and impaired organ function. Some patients may present with both CD and TAFRO syndrome concurrently. A retrospective study conducted across multiple centers in Japan examined 321 cases to determine if the quantity and position of swollen lymph nodes could forecast the clinical progression and intensity of these conditions.
View Article and Find Full Text PDFRationale and design of the multicenter, national, randomized, open labeled phase III trial: allogeneic stem cell transplantation as a potential curative treatment for patients with relapsed or progressed multiple myeloma (AlloRelapseMM Study).
BMC Cancer
January 2025
Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Background: Even though major improvements have been made in the treatment of myeloma, the majority of patients eventually relapse or progress. Patients with multiple myeloma who relapse after initial high-dose chemotherapy with autologous stem cells have a median progression free survival up to 2-3 years, depending on risk factors such as previous remission duration. In recent years, growing evidence has suggested that allogeneic stem cell transplantation could be a promising treatment option for patients with relapsed or progressed multiple myeloma.
View Article and Find Full Text PDF[Emphasis the early diagnosis and treatment of plasma cell disease-related kidney disease].
Zhonghua Yi Xue Za Zhi
January 2025
Beijing Chao-Yang Hospital, Capital Medical University, Beijing Multiple Myeloma Research Center, Beijing100020,China.
Plasma cell disorders represent a spectrum of complex diseases, ranging from benign conditions to malignancies. The monoclonal immunoglobulins produced in these disorders can result in various renal pathologies, which may present as differing degrees of renal insufficiency. In severe instances, patients may necessitate dialysis or kidney transplantation.
View Article and Find Full Text PDFBortezomib enhances the efficacy of BCMA CAR-T therapy through up-regulating BCMA expression in myeloma cells.
Int Immunopharmacol
January 2025
Department of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041 Sichuan Province, People's Republic of China. Electronic address:
Chimeric antigen receptor T (CAR-T) cell therapy targeting B cell mature antigen (BCMA) has shown remarkable clinical benefits in treating multiple myeloma (MM). Bortezomib, a proteasome inhibitor approved as a first-line agent for MM for two decades, has demonstrated potent antitumor activity. In this study, we found that bortezomib treatment stabilizes the expression of BCMA and conceived the hypothesis that BCMA CAR-T therapy combined with bortezomib would enhance the anti-MM efficacy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!