• Hideo Handa, Akiyuki Uzawa, Masahiro Mori, Manato Yasuda, Yosuke Onishi, Hiroyuki Akamine, Etsuko Ogaya, Yoko Niibe, Hajime Yokota, and Satoshi Kuwabara.
• Department of Neurology, Graduate School of Medicine, Chiba University, Japan.
• Intern. Med. 2024 Jul 11.

AbstractObjective Although patients with neuroimmunological disorders often need to be treated with glucocorticoids and are at risk of developing glucocorticoid-induced osteoporosis, no research has focused on the treatment of glucocorticoid-induced osteoporosis in such patients. Methods We compared the efficacy of denosumab and bisphosphonates in glucocorticoid-induced osteoporosis in neuroimmunological diseases. In 57 patients with neuroimmunological disorders treated with corticosteroids (34 with neuromyelitis optica spectrum disorders, 16 with myasthenia gravis, and 7 with others), we retrospectively studied the long-term effects of denosumab (n=23) and bisphosphonates (n=34) on spine and total hip bone mineral density (BMD) measured by dual energy X-ray absorptiometry. Results There were no significant differences in the age, lumbar spine BMD, or mean dose or duration of prednisolone administration at baseline between the denosumab and bisphosphonate groups. During the follow-up period of up to 6 years, the increase in the lumbar spine and total hip BMD was greater in the denosumab group than in the bisphosphonate group (p<0.01). Insufficient bone fractures were observed in 2 (9%) of the 23 patients in the denosumab group and in 2 (6%) of the 34 patients in the bisphosphonate group (not significant). Conclusion Denosumab is more effective than bisphosphonates in increasing the BMD of patients with neuroimmunological disorders receiving glucocorticoids.

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