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首页> 外文期刊>Parasitology >Redescription of Sarcocystis fusiformis sarcocysts from the water buffalo (Bubalus bubalis)
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Redescription of Sarcocystis fusiformis sarcocysts from the water buffalo (Bubalus bubalis)

机译：从水牛（Bubalus bubalis）重新命名Suscocystis fusiformis sarcocysts

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Four valid species of Sarcocystis have been reported from the water buffalo (Bubalus bubalis): Sarcocystis fusiformis, Sarcocystis buffalonis, Sarcocystis levinei and Sarcocystis dubeyi. Here, we redescribe structure of S. fusiformis sarcocysts by scanning and transmission electron microscopy (SEM, TEM). Twenty-one macroscopic sarcocysts from oesophagus of the water buffalo in Egypt were examined by light microscopy, SEM and TEM. The sarcocyst wall was up to 9 mu m thick, depending on the section and the technique. In 5 mu m paraffin-embedded sections, the sarcocyst wall was indistinct, 2-5 mu m thick and appeared smooth. In 1 mu m plastic-embedded sections stained with toluidine blue, the sarcocyst wall was 2.5-5.2 mu m thick and had branched villar protrusions (vp)-like branches of a dead tree. By SEM, the sarcocyst wall had a mesh-like structure with irregularly shaped vp that were folded over the sarcocyst wall. On each vp there were uniform papillomatous structures that were 100 nm wide. By TEM, vp were up to 6 mu m long and contained filamentous tubular structures, most of which were parallel to the long axis of the projections; granules were absent from these tubules. By TEM, bradyzoites within the same cyst varied from 11.2 to 16.8 mu m in length. By TEM, bradyzoites had a very long (10 mu m) convoluted mitochondrion, up to 12 dense granules, but only 2 rhoptries. This redescription should help to differentiate the sarcocysts of S. fusiformis from similar sarcocysts in domestic and wild ruminants.
机译：从水牛（Bubalus bubalis）中已经报告了四个有效的石蜡菌种：Suscocystis fusiformis，Sarcocystis buffalonis，Sarcocystis levinei和Sarcocystis dubeyi。在这里，我们通过扫描和透射电镜（SEM，TEM）重新描述了S. fusiformis sarcocysts的结构。用光学显微镜，扫描电镜和透射电镜对埃及水牛食管中的二十一个肉眼可见的卵囊进行了检查。肌囊壁的厚度可达9微米，具体取决于切片和技术。在5μm石蜡包埋的切片中，囊肿壁不明显，厚2-5μm，并且看起来光滑。在用甲苯胺蓝染色的1微米塑料包埋切片中，卵囊壁厚2.5-5.2微米，并有一棵枯树的分枝状比分突起（vp）状的分支。通过SEM，囊肿壁具有网状结构，具有不规则形状的vp，vp折叠在囊肿壁上。在每个vp上，有均匀的乳头状结构，宽度为100 nm。通过TEM，vp长达6μm，并包含丝状管状结构，其中大多数平行于突起的长轴;这些小管中没有颗粒。通过TEM，同一囊肿内的缓殖子的长度在11.2至16.8μm之间。通过TEM，缓殖子具有很长（10微米）的回旋线粒体，多达12个致密的颗粒，但只有2个变色。此重新命名应有助于区分家蝇和野生反刍动物中的梭状芽孢杆菌的囊肿与类似的囊肿。

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