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Updated: Aug 29, 2026

Modeling Chemotherapy Resistant Leukemia In Vitro
Published on: February 9, 2016
Hypomagnesemia associated with chemotherapy in patients treated for acute lymphoblastic leukemia: possible mechanisms
Chun-Yuan Guo1, Jacqueline M Halton, Ronald D Barr
1Department of Pediatrics, McMaster University, Hamilton, Canada.
Insights
Children with acute lymphoblastic leukemia (ALL) undergoing chemotherapy experienced reduced magnesium levels. This hypomagnesemia was linked to increased bone formation and recovery during treatment.
Area of Science:
- Pediatric Oncology
- Bone Metabolism
- Mineral Metabolism
Background:
- Acute lymphoblastic leukemia (ALL) treatment can impact bone health.
- Children with ALL may exhibit altered mineral metabolism during therapy.
Purpose of the Study:
- To investigate changes in bone mineral density (BMD) and mineral metabolism in children with ALL during chemotherapy.
- To explore the relationship between BMD, bone formation markers, and magnesium levels.
Main Methods:
- Longitudinal study measuring body weight, height, and lumbar spine BMD in 40 children with ALL at diagnosis and 6 months post-chemotherapy initiation.
- Measurement of serum and urinary biochemical indices of mineral metabolism in children with ALL.
- Comparison with 40 age- and sex-matched healthy controls.
Main Results:
- A reduction in fractional magnesium excretion was observed during chemotherapy.
- Serum osteocalcin (a marker of bone formation) was low at diagnosis and increased with treatment.
- Lumbar spine BMD Z-scores improved and correlated with serum osteocalcin; serum magnesium changes correlated negatively with BMD changes.
Conclusions:
- Chemotherapy for ALL is associated with significant changes in mineral metabolism, particularly magnesium.
- Rapid bone formation during recovery may lead to hypomagnesemia in children treated for ALL.
- Monitoring magnesium levels and bone health is crucial during pediatric ALL treatment.
Abstract:
Body weight, height and lumbar spine bone mineral density (BMD) were measured in 40 children (27 male, 13 female, aged 0.3-17.0 years) with acute lymphoblastic leukemia (ALL) at diagnosis and 6 months after initiation of chemotherapy, and in 40 age- and sex-matched local healthy children. Serum and urinary biochemical indices of mineral metabolism were measured in the children with ALL at both time points. From diagnosis to 6 months, a reduction in the fractional excretion of magnesium was found. Serum osteocalcin was low at diagnosis and increased during chemotherapy, whereas 24-h urinary type I collagen cross-linked N-telopeptide was unchanged. The Z-scores for lumbar spine BMD increased and were correlated with the serum osteocalcin at 6 months. The change in serum magnesium was correlated negatively with the change in lumbar spine BMD, and with the lumbar spine BMD Z-score at 6 months. After initiation of treatment for ALL, rapid recovery in bone formation, which results in the movement of extracellular magnesium into the skeleton through bone formation, may be an important contributor to hypomagnesemia.
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