Shigematsu M, Umeda A, Fujimoto S, Amako K
Department of Bacteriology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
J Med Microbiol. 1998 Jun;47(6):521-6. doi: 10.1099/00222615-47-6-521.
The swimming patterns of Campylobacter jejuni in environments of low and high viscosity were examined by a video tracking method. In media of low viscosity, C. jejuni swam with an average velocity of 39.3 microm/s with frequent changes in direction. The velocity of C. jejuni increased in a medium at a little higher viscosity than that of a low viscosity buffer. In addition to this, C. jejuni showed a second increase of velocity in media of a high viscosity of about 40 centipoise. The swimming patterns at these two velocity peaks were compared. In the second peak the wild-type C. jejuni exhibited repeated back and forth swimming patterns which were more like the swimming pattern of spirochaetes than that of monotrichous bacteria. Thus C. jejuni may presumably use a different swimming mode in media of high viscosity than the original swimming mode mediated by the propelling force of the flagella. The spiral shape of this bacterium like that of spirochaetes may strongly influence its swimming ability in media of high viscosity such as the mucous layer of the intestinal tract.
采用视频追踪法研究了空肠弯曲菌在低粘度和高粘度环境中的游动模式。在低粘度培养基中，空肠弯曲菌平均游动速度为39.3微米/秒，方向频繁改变。空肠弯曲菌在粘度略高于低粘度缓冲液的培养基中速度增加。除此之外，空肠弯曲菌在约40厘泊的高粘度培养基中速度出现第二次增加。比较了这两个速度峰值下的游动模式。在第二个峰值时，野生型空肠弯曲菌呈现出反复的来回游动模式，这种模式更类似于螺旋体的游动模式，而不是单鞭毛菌的游动模式。因此，空肠弯曲菌在高粘度培养基中可能使用与由鞭毛推进力介导的原始游动模式不同的游动模式。这种细菌的螺旋形状与螺旋体相似，可能会强烈影响其在高粘度培养基（如肠道粘液层）中的游动能力。
