Influence of chronic unpredictable emotional stress on the ultrastructures of temporomandibuiar joint in rats
10.3321/j.issn:1002-0098.2008.01.009
- VernacularTitle:慢性不可预知性应激刺激对大鼠下颌关节超微结构的影响
- Author:
Jun LIANG
1
;
Min HU
;
Ye-Hua HAN
;
Hong-Xi XIAO
;
Jia-Li ZHANG
Author Information
1. 解放军总医院
- Keywords:
Temporomandibular joint;
Stress,psychological;
Ultrastructure
- From:
Chinese Journal of Stomatology
2008;43(1):30-33
- CountryChina
- Language:Chinese
-
Abstract:
Objeetive To study the influence of emotional stress on the ultrastructures of temporomandibular joint in rats. nethods Sixteen male Wistar rats,aged 12 weeks,were divided into 2 groups randomly,experimental group and control group. Animal model of chronic unpredictable stress was established in the experimental group. After 6 weeks,all rats in both groups were killed and their condyles and articular discs were dissected,taken out and observed by scanning electron microscope. Results Under scanning electron microscope,the surface gelatum of the condyles in experimental group were cracked,and collagen fibrils in disorder and broke, and deep layer coHagen fibrils were exposed.The articular discs' surface gelatum were still integrated,but the gyri dispose were irregular. In control group,there were no such changes in condyles and articular discs. Conclusions The long-term emotional chronic unpredictable stress could induce the injuries of temporomandinbular joint in rats in ultrastructure level.
