Abstract
Chronic rhinosinusitis (CRS) is a complicated disease with clinical symptoms that are impacted by the absence or presence of nasal polyps (CRSsNP or CRSwNP). Understanding of the different treatments of CRS is very significant in selecting appropriate therapies and preventing exacerbation relevant to this chronic inflammation. This study was aimed to evaluate the effect of Chinese traditional medicine lianhuaqingwen granules on CRSsNP. CRSsNP patients were enrolled and randomized into placebo or lianhuaqingwen (LHQW) granules treatment group (placebo or LHQW group). Their clinical symptoms were scored using Visual Analog Scale (VAS) and Sino-Nasal Outcome Test (SNOT)-22. Nitric oxide (NO) from nasal cavity and sinus and nasal resistance were also examined. Then, nasal biopsy samples and nasal lavage fluid (NLF) were obtained from these patients, and histologic characteristics of nasal mucosa and T cell subpopulations patterns in the NLF were evaluated. Finally, inflammatory mediators in the NLF were assessed in both groups. One hundred and forty patients with CRSsNP finished this one-month study. VAS and SNOT-22 scores and nasal resistance were all decreased distinctly after the treatment of LHQW, but not after placebo. However, the nasal NO concentration was increased in LHQW administration group in comparison with placebo group. There were significant differences in above parameters between these two treatments. Histologic changes in nasal mucosa were improved only in LHQW group. CD4+ and CD8+ T cells were all downregulated in the LHQW treatment group, but not in placebo group. Inflammatory mediators from the NLF were decreased in LHQW treatment group compared to placebo group. Furthermore, there were significant changes between these two groups in CD4+ and CD8+ T cell subpopulations and concentrations of inflammatory substances. These findings demonstrate that LHQW granules treatment may control the inflammation in nasal mucosa and result in the improvement of CRSsNP. This Chinese medicine might become a promising therapy in the management of this disease.
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