Electrical field stimulation improves bone mineral density in ovariectomized rats.

Area of Science:

• Biomedical Engineering
• Orthopedics
• Endocrinology

Background:

• Osteoporosis, a major health issue primarily affecting post-menopausal women, necessitates novel prevention and treatment strategies.
• While electrical fields are known to promote osteogenesis in fractures, their effect on osteoporotic bone tissue is less understood.

Purpose of the Study:

• To investigate the effects of low-intensity pulsed electrical fields on bone mineral density and content in an ovariectomized rat model.

Main Methods:

• Thirty female Wistar rats were divided into three groups: sham surgery (SHAM), bilateral ovariectomy (OVX), and OVX with electrical stimulation (OVX + ES).
• The OVX + ES group received 20-minute sessions of a 1.5 MHz, 30 mW/cm(2) pulsed electrical field five times a week for 55 sessions.
• Bone mineral density (BMD) and bone mineral content (BMC) were measured using dual-energy X-ray absorptiometry (DXA) before surgery and after 84 days.

Main Results:

• Electrical stimulation significantly improved global, spine, and limb bone mineral density in the OVX + ES group compared to the OVX group (P < 0.05).
• The OVX + ES group exhibited significantly higher global bone mineral content than both SHAM and OVX groups (P < 0.05).

Conclusions:

• Low-intensity pulsed electrical fields can stimulate osteogenesis in ovariectomized rats, suggesting a potential therapeutic application.
• Further research is required to confirm the efficacy of electrical stimulation for treating osteoporosis.