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"Recently, we became aware that some of the inflammation in CRS with nasal polyps is generated by the nasal lining itself, when a particular protein pump (P-glycoprotein) is overexpressed and leads to the hyper-secretion of inflammatory cytokines," said senior author Benjamin S. Bleier, M.D., a sinus surgeon at Mass. Eye and Ear and an assistant professor of otolaryngology at Harvard Medical School. "Verapamil is a first-generation inhibitor that is well-established in blocking P-glycoprotein. In some patients with CRS with nasal polyps, we saw dramatic improvement in their symptom scores."
One of the more prevalent chronic illnesses in the United States, CRS has been known to cause significant quality of life detriments to affected patients, who often cannot breathe or sleep easily due to obstructed nasal and sinus passages. The presence of nasal polyps represents a particularly severe presentation of the disease. Current treatment strategies (most often long-term steroid use) are plagued by difficult side effects and fail to target an underlying source of the disease.
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