Introduction: Up to 90% of postmenopausal women and female cancer survivors may be affected by the genitourinary syndrome of menopause (GSM), with a negative impact on sexual function and quality of life. A novel energy-based device among the treatment options for GSM is radiofrequency therapy (RFT). RFT is a treatment option that uses energy from radio waves to heat the tissue. The objective of this study was to assess the impact of RFT on sexual function in female cancer survivors (gynecologic and breast) and non-cancer menopausal women. Methods: In a single-arm prospective trial, the efficacy of RFT in both female cancer survivors (gynecologic and breast) and non-cancer menopausal women with sexual dysfunction at a tertiary and referral center (Imam Hossein Medical Center, Tehran, Iran) was evaluated between April 2022 and December 2022. The study protocol consisted of 3 monthly RFT sessions. Examination was performed at baseline (T0) and 3 months after the last RFT session (T1). The primary outcome was sexual function, which was assessed using the Female Sexual Function Index (FSFI). In addition, adverse events were evaluated during treatment and at T1. Results: A total of 37 female cancer survivors (mean [SD] age: 49.4 [8.9] years) and 37 non-cancer menopausal women (mean [SD] age: 53.8 [5.5] years) were enrolled. Patients exposed to RFT showed a significant improvement in FSFI scores when compared to baseline scores for both female cancer survivors (13.07, 95% CI: 12.27 - 13.86) and non-cancer menopausal women (13.18, 95% CI: 12.34 - 14.03). There was no difference in FSFI total score improvement between the two groups (t(72)=0.06, P=0.951). There were no serious adverse events associated with RFT. Conclusion: The efficacy of RFT as a treatment for sexual dysfunction has been demonstrated in both non-cancer menopausal women and female cancer survivors. In both groups, a significant improvement was confirmed.
Introduction: Different kinds of treatments have been developed to fight cancers. Low-level laser therapy (LLLT), also known as photobiomodulation therapy (PBMT), is a low-power monochromatic and coherent light that has been used successfully for healing injuries and combating malignancies. However, there are concerns about the application of LLLT to cancers due to the increased proliferation of some cancer cells after LLLT. Methods: This study investigated the effects of 650 nm and 870 nm lasers on the proliferation of HT29 colorectal cancer cell lines in vitro and in vivo. Results: The results showed that the laser with a wavelength of 870 nm did not meaningfully alter the proliferation of cultured cells. However, cell proliferation was promoted when the laser was applied within a wavelength of 650 nm. Treatment of HT29-derived tumors in nude mice with the 650 nm laser resulted in the decline of the tumor progression rate compared to controls. This result was inconsistent with the proliferative effects of the laser on the cultured cells. Conclusion: Cell behavior in response to LLLT might be different between cell culture and xenograft models.
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