中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (32): 5164-5169.doi: 10.3969/j.issn.2095-4344.2017.32.014

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

放射性口干症动物模型建立及颌下腺放射性组织损伤的生物学效应

李碧霞1,陈倩怡1,戴振晖2,叶景云1,王文静1,陈  珊1,张嘉鹏1,陈佩仪1   

  1. (1广州中医药大学护理学院,广东省广州市  510006;2广东省中医院大学城放疗科,广东省广州市  510006)
  • 收稿日期:2017-06-25 出版日期:2017-11-18 发布日期:2017-11-15
  • 通讯作者: 陈佩仪,硕士,教授,广州中医药大学护理学院,广东省广州市 510006
  • 作者简介:李碧霞,女,1990年生,广东省五华县人,汉族,2017年广州中医药大学毕业,硕士,主要从事中医护理方面的研究。
  • 基金资助:

    广东省自然科学基金项目(2014A030313405)

Modeling and biological effects of radiation-induced xerostomia

Li Bi-xia1, Chen Qian-yi1, Dai Zhen-hui2, Ye Jing-yun1, Wang Wen-jing1, Chen Shan1, Zhang Jia-peng1, Chen Pei-yi1   

  1.  (1School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 2Department of Radiotherapy, Daxuecheng Branch of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, Guangdong Province, China)
  • Received:2017-06-25 Online:2017-11-18 Published:2017-11-15
  • Contact: Chen Pei-yi, Master, Professor, School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • About author:Li Bi-xia, Master, School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:

    the Natural Science Foundation of Guangdong Province, No. 2014A030313405

摘要:

文章快速阅读:


文题释义:
放射性口干症:指接受放疗的头颈部肿瘤患者因其唾液腺受到照射后发生损伤,发生唾液性质和唾液量的改变,并引起口干、黏膜炎等一系列相关症状,远期反应严重者甚至出现吞咽和交谈困难、味觉丧失、龋齿发生及口腔真菌感染等。
颌下腺指数:又称为颌下腺系数颌下腺指数,能反映腺体的变化情况,指数增大,提示腺体充血、水肿或增生肥大等;指数减小,表示腺体萎缩和其他退行性变产物。
摘要
背景:
目前对于唾液腺的放射性损伤机制还未明确,治疗和防护措施也处于探索阶段。
目的:建立放射性口干症大鼠模型,并观察18 Gy电子线照射后大鼠颌下腺组织损伤情况及唾液成分变化。
方法:通过随机对照实验,将115只Wistar大鼠随机分成照射组和假照射组,假照射组只麻醉不照射,照射组麻醉后使用直线加速器一次性照射18 Gy。将大鼠颌下腺部位暴露于照射区,制备放射性口干症模型。记录造模后21 d内饮水量;分1,3,7,14,21,28,35,42 d 8个时间点收集唾液、摘取颌下腺腺体,测量唾液量、颌下腺指数,对颌下腺切片行苏木精-伊红染色观察组织形态学变化。
结果与结论:①放射后1-21 d照射组大鼠每天平均饮水量为(6.42±1.91) mL,假照射组为(4.82±1.20) mL,差异有显著性意义(P < 0.05);②在放射后42 d内照射组唾液量均少于假照射组,其中照射组大鼠照射后第7天唾液量降至最低;7,21,28,42 d比较差异有显著性意义(P < 0.05);③1 d及21-42 d,照射组颌下腺指数均小于假照射组(P < 0.05);④苏木精-伊红病理结果显示,照射组大鼠颌下腺炎性浸润、腺体萎缩、核固缩等损伤情况呈渐进性加重,放射后42 d损伤最为严重;⑤综上,Wistar大鼠接受直线加速器电子线18 Gy照射后,放射性口干症模型成功建立,直观表现为饮水量增加,唾液量减少,病理切片显示颌下腺病理损伤程度在42 d内随时间的增加呈进行性加重。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-3536-589X(李碧霞)

关键词: 组织构建, 组织工程, 放射性口干症, 动物模型, 颌下腺, 直线加速器, 广东省自然科学基金

Abstract:

BACKGROUND: There is little information available in the mechanism of radiation-induced salivary gland injury, and its treatment and prevention are still at the exploratory stage.
OBJECTIVE: To establish a rat model of radiation-induced xerostomia with 18 Gy electron beam and to observe the pathological changes of the submandibular gland and changes in saliva ingredients.
METHODS: Totally 115 Wistar rats were randomly divided into exposure and control groups: the rats in the exposure group were subjected to anesthesia, and the submandibular gland received 18 Gy electron beam radiation to establish the model of radiation-induced xerostomia. The rats in the control group were only anesthetized but not exposed to radiation. The water intake was recorded at 21 dys after modeling. The saliva was collected and the submandibular gland was removed at 1, 3, 7, 14, 21, 28, 35 and 42 days to detect the saliva volume and submandibular gland index, and the morphological changes of the submandibular gland were observed by hematoxylin-eosin staining.
RESULTS AND CONCLUSION: At 1-21 days after modeling, the average daily water intake was (6.42±1.91) mL in the exposure group and (4.82±1.20) mL in the control group, respectively (P < 0.05). During 42 days after modeling, the saliva secretion volume in the exposure group was lower than that in the control group, which was the lowest on day 7, and the difference was significant at 7, 21, 28 and 42 days after modeling between two groups (P < 0.05). The submandibular gland index in the exposure group was significantly lower than that in the control group at 1 and 21-42 days after modeling (P < 0.05). Hematoxylin-eosin staining results showed that in the exposure group, the rat submandibular gland appeared with inflammatory infiltration, glandular atrophy and karyopyknosis that were aggravated with time until day 42. To conclude, the rat model of radiation-induced xerostomia is established successfully with 18 Gy beam, characterized as increased water intake, decreased saliva volume and progressive aggravation of pathological injury of the submandibular gland.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Xerostomia, Radioactivity, Models, Animal, Submandibular Gland, Tissue Engineering

中图分类号: