The prevalence of osteoporosis is increasing with the aging population and is associated with increased risk of fracture and chronic pain
. Osteoporosis is currently treated with bisphosphonate therapy to attenuate bone loss. We previously reported that improvement in bone mineral density is not sufficient to reduce osteoporosis-related pain
in an ovariectomy (OVX)-induced mouse model of osteoporosis, highlighting the need for new treatments. Targeting of nerve growth factor (NGF) with sequestering antibodies is a promising new direction for the treatment of musculoskeletal pain
including back pain
and arthritis. Its efficacy is currently unknown for osteoporotic pain
To investigate the efficacy of anti-NGF antibody therapy on osteoporotic pain
in an OVX-induced mouse model.
Ovariectomy- and sham-operated mice were injected with an anti-NGF antibody (10 mg/kg, intraperitoneally, administered 2×, 14 days apart), and the effect on behavioural indices of osteoporosis-related pain
and on sensory neuron plasticity was evaluated.
Treatment with anti-NGF antibodies attenuated OVX-induced hypersensitivity to mechanical, cold, and heat stimuli on the plantar surface of the hind paw. The OVX-induced impairment in grip force strength, used here as a measure of axial discomfort, was partially reversed by anti-NGF therapy. No changes were observed in the rotarod or open-field tests for overall motor function and activity. Finally, anti-NGF treatment attenuated the increase in calcitonin gene-related peptide–immunoreactive dorsal root ganglia neurons observed in OVX mice.
Taken together, these data suggest that anti-NGF antibodies may be useful in the treatment of prefracture hypersensitivity that is reported in 10% of patients with osteoporosis.
This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Corresponding author. Address: Center for Preventive Medical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 2608670, Japan. Tel.: +81-43-226-2017; fax: +81-43-226-2016. E-mail address: firstname.lastname@example.org (M. Suzuki).
Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.
Received October 05, 2017
Received in revised form February 24, 2018
Accepted March 13, 2018
© 2018 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The International Association for the Study
Anti–nerve growth factor therapy attenuates cutaneous hypersensitivity and musculoskeletal discomfort in mice with osteoporosis
Orginally Published At: PAIN Reports