Crohn's disease perianal fistulae are often resistant to standard anti-TNF-α therapies. Mesenchymal stem cell (MSC)-derived exosomes are extracellular vesicles that have highly potent anti-inflammatory effects, and the previous phase of this study demonstrated their safety in the treatment of refractory perianal fistulas.
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Hadizadeh et al. (2024) studied this question.
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