Hyaluronic Acid Gel Shows Promise as Rectal Spacer in Gynecological Cancer Radiation Therapy
A groundbreaking study conducted by clinician-researchers at Austin Health has established the feasibility and safety of utilizing stabilized hyaluronic acid (sHA) gel as a rectal spacer during radiation treatment for gynecological cancers.This innovative approach aims to minimize radiation exposure to the rectum, possibly reducing side effects and improving the quality of life for patients.
Traditionally, radiation therapy for gynecological cancers – including cervical, endometrial, and vaginal cancers – can inadvertently damage surrounding tissues, such as the rectum and sigmoid colon. This damage can lead to complications like radiation proctitis, causing symptoms like diarrhea, bleeding, and abdominal pain. To mitigate these risks, doctors sometimes use a rectal spacer, a device or substance inserted between the rectum and the radiation target.
Currently, hydrogel spacers are the most commonly used option. However, the Austin health study explored sHA gel as a potential option. Hyaluronic acid is a naturally occurring substance found throughout the body, known for its ability to retain water and provide cushioning.Stabilizing it allows for a longer-lasting effect, making it suitable for use as a spacer during the several weeks of radiation treatment.
the study, published in the journal of Medical Radiation Sciences, involved a cohort of patients undergoing radiation therapy for gynecological cancers. Researchers carefully monitored the patients for safety and assessed the effectiveness of the sHA gel in maintaining space between the rectum and the radiation field. The results demonstrated that sHA gel was well-tolerated, with no significant adverse events reported. Moreover, the gel effectively maintained the desired spacing throughout the course of treatment.
“This is a significant step forward in optimizing radiation therapy for gynecological cancers,” says Dr. Kristen Phillips, lead researcher on the study and a radiation oncologist at Austin Health. Austin Health News.“By reducing the radiation dose to the rectum, we can potentially minimize long-term side effects and improve the overall treatment experience for our patients.”
The use of sHA gel offers several potential advantages over existing rectal spacers. As a naturally occurring substance, it may reduce the risk of allergic reactions or biocompatibility issues. Its inherent properties could also lead to improved comfort for patients. Further research is planned to compare sHA gel directly with hydrogel spacers in a larger, randomized controlled trial.
This research represents a promising advancement in the field of radiation oncology, offering a new tool to enhance the safety and effectiveness of cancer treatment.The findings pave the way for future studies and potential clinical implementation of sHA gel as a standard-of-care rectal spacer for gynecological cancer patients.
