Engelbrecht H, Zokpé I
Bezirkshygiene-Institut Potsdam, Referenzlaboratorium für Medizinische Helminthologie, Kleinmachnow, DDR.
Angew Parasitol. 1988 Jun;29(2):91-100.
By scanning electron microscopy we found heteromorph microtriches in the tegumental surface of the praeadult and its bladder. But this polymorphism is caused by three unimorph parts, namely the head region, the midbody and the bladder. The types of microtriches are heterogeneous in regard to the shape (from conical to cylindrical), the size (from 0.37 to 4.5 micron in length and 0.055 to 0.092 micron in diameter) and the density (from 6.3 to 25 microtriches/micron 2). An attempt was made to determine the relative increase in the tegumental surface of the cysticercus of T. saginata. The relation of actual surface area to a corresponding area without microtriches is OF = nA + 1/1 - nB. In this study, the factor of the increase in the tegumental surface (OF) ranged from the head region (6.3x) to the midbody (1.4x -1.7x) and the bladder (21x). By transmission electron microscopy fine threads were demonstrated in the apical surface of the microtriches. These fine threads raised the adhesive function of the microtriches in the course of the infection of the final host as well as in the migration in the digestive tract. A relation between shape, size and density of the microtriches and the body volume is postulated.
通过扫描电子显微镜，我们在未成熟成虫及其囊泡的体表发现了异形微毛。但这种多态性是由三个单态部分引起的，即头部区域、虫体中部和囊泡。微毛的类型在形状（从圆锥形到圆柱形）、大小（长度从0.37到4.5微米，直径从0.055到0.092微米）和密度（从6.3到25根微毛/平方微米）方面存在差异。我们试图确定牛带绦虫囊尾蚴体表的相对增加量。实际表面积与无微毛的相应面积的关系为OF = nA + 1/1 - nB。在本研究中，体表增加因子（OF）范围从头部区域（6.3倍）到虫体中部（1.4倍 - 1.7倍）和囊泡（21倍）。通过透射电子显微镜在微毛的顶端表面发现了细丝。这些细丝在终末宿主感染过程以及在消化道内迁移过程中提高了微毛的黏附功能。推测微毛的形状、大小和密度与虫体体积之间存在关系。
