Fibrotic remodeling of nasal mucosa in rat model after radiation injury
10.3760/cma.j.issn.1673-0860.2009.02.013
- VernacularTitle:放射性鼻黏膜损伤后组织纤维化重塑的特点
- Author:
Mang XIAO
1
;
Jian-Guo TANG
;
Xiao-Nan SUN
;
Xiu-Wen JIANG
;
Bao-Zhen LUO
;
Li-Na ZHAO
Author Information
1. 浙江大学医学院附属邵逸夫医院
- Keywords:
Radiation injuries,experimental;
Rats;
Nasal mucosa;
Fibrosis
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2009;44(2):130-135
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the role of nasal mucosa fibrosis on radiation induced nasal mucosa injury. Methods Seventy two male rats were randomly divided into two groups, control group and irradiation injured group (radiation dose were 40 Gy);the rats were killed 1 week, 2 weeks, 4 weeks, 8 weeks, 3 months and 6 months after the finish of radiation. The middle turbinates of the animals were removed. The pathological change of the nasal mucosa were observed with scanning electron microscope, transmission electron microscope, hematoxylin and eosin (HE), alcian blue-periodic acid-Sehif (AB-PAS), and Masson Trichrome (MT). The Hyp content in nasal mucosa was measured with chemo-chromatometry. Results After radiation, the pathological characteristics in early stage (within 4 weeks) was acute inflammatory reaction. The repair of nasal mucosa started 4 weeks after radiation, lasted to 6 months. The deposition of collagen in nasal mucosa could be found 1 week after irradiation and increased gradually. Conclusion Irradiation could induce a serials of pathological changes on nasal mucosa. The nasal mucosa fibrosis may be one of the reasons of persistent irradiation induced nasal mucosa injury.
