ArticleJournal of bone and mineral metabolism2020
Aromatase inhibitors attenuate the effect of alendronate in women with breast cancer.
Article in Journal of bone and mineral metabolism, 2020. 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 authors at 2 institutions in 2 countries.
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Abstract
introductionAromatase inhibitors are known to accelerate bone loss in patients with breast cancer. However, how much AIs affect the efficacy of antiresorptive agents has not been studied. The study aimed to compare the effect of alendronate on bone mineral density (BMD) between patients with and without AI treatment. MATERIALS AND
methodsIn this retrospective study, 90 postmenopausal women with early breast cancer who were being treated with both AI and alendronate 70 mg weekly (ALN + AI), and 90 age- and body mass index (BMI)-matched patients who were only taking alendronate (ALN-only) were analyzed. BMD and bone turnover markers (BTMs) were assessed at the baseline and 12 months.
resultsThe mean age was 63 years. At baseline, the ALN-only group had lower lumbar spine (LS), femur neck (FN), and total hip (TH) BMD than ALN + AI group. After 1-year of alendronate treatment, the LS and FN BMD were improved more in the ALN-only group than those in the ALN + AI group after adjustments for age, BMI, baseline BMD, diabetes, hypertension, renal function, and previous fracture history [LS BMD: 6.2% (3.1%; 9.2%) in ALN-only, 3.5% (-0.5%; 6.5%) in ALN + AI, p = 0.001; FN BMD: 2.5% (0.3%; 5.7%) in ALN-only, 0.9% (- 1.8%; 3.6%) in ALD + AI, p = 0.032]. BTMs were significantly decreased in both groups, but the changes between groups were similar.
conclusionThe effect of alendronate on the LS and FN BMD was attenuated in postmenopausal women who were taking AI compared to those who were not on AI.
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