ArticleCancers2026
Juvenile Doxorubicin Exposure Causes Lasting Trabecular Bone Loss in Mice: A Preclinical Model of Long-Term Skeletal Damage.
Article in Cancers, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
BACKGROUND/
objectivesAnthracyclines such as doxorubicin (DOX) are integral to pediatric cancer protocols, yet little is known about how juvenile DOX exposure shapes the long-term trajectory of bone growth, microarchitectural connectivity, and the functional balance of bone turnover after treatment cessation. This study aimed to define how juvenile DOX exposure remodels trabecular architecture and bone homeostasis both acutely and after recovery.
methodsFour-week-old female BALB/c mice were treated with 6 mg/kg DOX or saline once weekly for four weeks. Bone parameters were analyzed immediately after treatment and after a 4-week drug-free recovery period. Assessments included high-resolution µCT for bone structure and connectivity, H&E and TRAP staining for histological evaluation, and ELISA for bone turnover markers (PINP, OC/BGP, TRACP-5b) in both serum and bone marrow.
resultsDOX exposure significantly compromised trabecular bone mass and network connectivity, with persistent bone loss extending into the recovery period. Histologically, DOX caused marked degeneration in the epiphyseal growth plate and calcified zones, alongside a marked increase in osteoclast numbers. Functionally, an acute increase in circulating bone formation markers was observed post-treatment. However, during the recovery phase, this transitioned to a significant suppression of these systemic markers, coupled with significantly increased localized bone resorption.
conclusionsJuvenile DOX exposure produces sustained trabecular network impairment and growth plate degeneration. This durable structural deterioration is functionally associated with the establishment of a localized, pathologically uncoupled remodeling environment.
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