Chemotherapy-induced peripheral neuropathy, or CIPN, is a typical facet impact of most cancers remedy that causes capturing or burning ache, numbness, tingling and chilly sensitivity of the fingers and ft for a lot of most cancers sufferers. A brand new examine from Roswell Park Most cancers Institute discovered that ladies who took multivitamin dietary supplements earlier than their breast most cancers analysis and/or throughout remedy, nevertheless, have been much less more likely to develop these debilitating and sometimes long-lasting signs. The examine was revealed on-line forward of print within the Journal of the Nationwide Most cancers Institute (JNCI).
An estimated 30% to 40% of most cancers sufferers who obtain chemotherapy expertise CIPN, enduring ache that diminishes sleep and high quality of life and may make on a regular basis actions comparable to strolling or buttoning a shirt troublesome. CIPN generally results in dose discount or discontinuation of chemotherapy. Signs can persist after remedy ends and develop into everlasting. Some chemotherapy medication, comparable to taxanes and platinum-based compounds, are extra probably than others to trigger it. At present, no identified preventive intervention for the facet impact exists.
“Our examine confirmed that use of multivitamin dietary supplements, however not particular nutritional vitamins, was related to much less neurotoxicity,” says Roswell Park researcher and the examine’s senior writer, Christine Ambrosone, PhD, Senior Vice President for Inhabitants Sciences and Roswell Park Alliance Basis Endowed Chair in Most cancers Prevention. “This was true to be used earlier than analysis and, to a lesser extent, throughout chemotherapy.”
“Signs of CIPN typically persist after completion of chemotherapy, and efficient remedy choices are restricted,” notes the paper’s first writer, Gary Zirpoli, PhD, a graduate of Roswell Park’s doctoral program in most cancers prevention who’s now a analysis fellow with the Division of Neurology at Massachusetts Normal Hospital and Harvard Medical College. “Figuring out preventive measures is due to this fact a essential a part of enhancing high quality of life for breast most cancers survivors.”
Some research have evaluated using dietary dietary supplements in relation to breast most cancers prognosis, however the majority of earlier knowledge have been derived from research taking a look at use of nutritional vitamins in relation to danger, or requested about use retrospectively amongst sufferers who have been at completely different factors of their survivorship continuum, explains Dr. Ambrosone. This examine, together with greater than 1,000 sufferers, was embedded in a scientific trial in a cohort of ladies with breast most cancers who obtained the taxane drug paclitaxel, an agent that generally leads to CIPN. Earlier use of dietary dietary supplements was requested at registration to the trial, and use throughout chemotherapy was recorded when sufferers had accomplished remedy. A proportion of sufferers on this trial skilled grade three and four CIPN, characterised by impairing or disabling sensory loss that interferes with actions of each day residing or perform. Sufferers who used multivitamins earlier than analysis have been practically 40% much less more likely to expertise grade three or four neuropathy than non-users. Related, however considerably weaker associations have been noticed to be used throughout chemotherapy. Particular person dietary supplements comparable to vitamin C, folic acid, calcium, iron and fish oil, didn’t seem to have an affiliation with danger for CIPN.
Dr. Ambrosone cautions that using multivitamins might mirror different “wholesome way of life” affected person behaviors that will cut back danger of CIPN, fairly than the protecting impact immediately as a result of dietary supplements themselves.
“Importantly, we don’t but have info on how dietary supplements might have an effect on breast most cancers recurrence and survival, and there are some issues that dietary supplements, notably antioxidants, might intervene with the efficacy of most cancers remedy,” she says. “Due to this, modifications to scientific observe aren’t warranted, and proposals for sufferers can’t be made right now.”