| 摘要: |
| 应用透射电镜技术研究了斜带髭鲷(Hapalogenys nitens)外周血红细胞和血栓细胞的超微结构。结果表明: 红细胞呈卵圆形或长椭圆形, 胞核居中, 异染色质呈斑块状分布; 胞质中含有线粒体、多核糖体、小囊泡、高尔基体和边缘带; 可见核正处于分裂的细胞或双核细胞, 以及凋亡红细胞。血栓细胞形态多样, 细胞表面有的无突起, 有的有短的突起或长的丝状伪足; 胞核位于细胞中央, 异染色质呈片状或网状分布; 胞质中含有丰富的游离核糖体、微管, 少量的粗面内质网、线粒体、致密颗粒和大液泡; 由大量空泡和大小不一、形态各异的小管构成的表面相连小管系遍布于胞质中, 成为血栓细胞的一个显著特征; 偶见血栓细胞以其丝状伪足抱裹异物颗粒的现象。 |
| 关键词: 红细胞 血栓细胞 超微结构 外周血 斜带髭鲷(Hapalogenys nitens) |
| DOI： |
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| 基金项目:福建省自然科学基金资助项目(X0650005) |
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| Ultrastructural study on peripheral blood erythrocytes and thrombocytes in skewband grunt (Hapalogenys nitens) |
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MEI Jing-liang,YAN Lin,WANG Xiang-ping
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| Abstract: |
| The aim of the present paper was first to examine the peripheral blood erythrocytes and thrombocytes in skewband grunt (Hapalogenys nitens) by transmission electron microscopic method and second to characterize them ultrastructurally. Subsequent study showed that erythrocytes were oval or elongated ellipsoidal cells with a central, oval nucleus with heterochromatin blocks. A few dividing or divided nuclei appeared in the cells. Scarce organelles such as some mitochondria, polyribosomes, small vesicles and an occasional small Golgi complex were found in the cytoplasm. A marginal band of microtubules was presented beneath the plasmalemma. Some apoptotic red blood cells were also seen. On the electron micrographs, thrombocytes were variable in form with short pseudopodia, long filopodia or no protrusion. The nucleus exhibited the characteristics of large heterochromatin blocks or networks. Organelles such as free ribosomes and microtubules were abundant, rough endoplasmic reticulum, mitochondria, electrondense granules and largr vesicles were scarce. The surface-connected canalicular system (SCCS) formed by numerous vacuoles and canaliculi of different sizes and shapes has a distinguishing feature of thrombocytes and distributed throughout the cytoplasm. Meanwhile, the phagocytosis of thrombocytes was described. And the phagocytic ability of piscine thrombocytes was also discussed in this paper. |
| Key words: erythrocyte thrombocyte ultrastructure peripheral blood Hapalogenys nitens |
