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Novel approaches to preventing chemotherapy-induced cognitive dysfunction in breast cancer: the art of the possible
Debra Barton1, Charles Loprinzi
1Mayo Clinic, Division of Medical Oncology, Rochester, MN 55905, USA.
Abstract:
Chemotherapy-induced cognitive dysfunction in women with breast cancer has become an increasingly important clinical issue. To date, little is known about its incidence, exact characteristics, and exact pathophysiology. Likewise, no treatments have been shown to prevent or decrease cognitive changes thought to result from chemotherapy. However, ongoing scientific research might help us understand the mechanisms that will help patients maintain maximal cognitive function. Changes in cognition due to chemotherapy might result from indirect chemical toxicity and oxidative damage, direct injury to neurons, inflammation, or a type of autoimmune response. Based on these potential causes, and based on interventions that have been tested in dementia and Alzheimer's disease, there are a number of potential, novel interventions that could be tested in clinical trials as treatments for chemotherapy-induced cognitive dysfunction. Possible anecdotal strategies to consider include hormonal interventions, antioxidants, monoamine oxidase inhibitors, growth factors, dopamine agonists, cholinesterase inhibitors, antiinflammatory agents, and behavioral interventions
Insights
Chemotherapy can cause cognitive dysfunction in breast cancer patients, with unknown causes and no current treatments. Research is exploring potential interventions to help patients maintain cognitive function.
Area of Science:
- Oncology
- Neuroscience
- Pharmacology
Background:
- Chemotherapy-induced cognitive dysfunction (CICD) is a significant clinical issue for breast cancer survivors.
- The exact incidence, characteristics, and pathophysiology of CICD remain largely unknown.
- Currently, no proven treatments exist to prevent or mitigate chemotherapy-related cognitive changes.
Purpose of the Study:
- To review the current understanding of chemotherapy-induced cognitive dysfunction.
- To explore potential mechanisms underlying cognitive changes after chemotherapy.
- To identify novel interventions for clinical trials to treat CICD.
Main Methods:
- Literature review of chemotherapy-induced cognitive dysfunction.
- Analysis of potential pathophysiological mechanisms.
- Identification of potential therapeutic strategies based on dementia and Alzheimer's disease research.
Main Results:
- Cognitive changes may stem from indirect toxicity, oxidative damage, neuronal injury, inflammation, or autoimmune responses.
- Several novel interventions show promise for treating CICD.
- Interventions considered include hormonal therapies, antioxidants, and anti-inflammatory agents.
Conclusions:
- Understanding the mechanisms of CICD is crucial for developing effective treatments.
- Further clinical trials are needed to evaluate potential interventions for CICD.
- A range of novel strategies, including pharmacological and behavioral approaches, could be explored.
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