“红肉病”文蛤的组织病理学

On histopathology of the Meretrix meretrix Linnaeus suffering from the red muscles disease

利用组织学和组织化学方法,在光镜水平下研究了患"红肉病"文蛤(MeretrixmeretrixLinnaeus)的组织病理学变化特征。结果显示,患病文蛤的病理学变化主要表现为组织结构紊乱,上皮膨大、脱落,鳃、外套膜、消化盲囊等组织发现异常结构及寄生物,如嗜碱性的包涵体、嗜酸性颗粒及寄生性原生动物等。另外,组织化学研究结果显示,病蛤在糖含量、磷酸酶活性等方面也有明显变化,表现为消化盲囊、肠等部位吸收细胞内糖含量增加。消化盲囊、消化管各处酸性磷酸酶(ACP)活性减弱,碱性磷酸酶活性(AKP)增强。鳃组织ACP活性增强,AKP活性减弱等。

The histopathology of the Meretrix meretrix Linnaeus suffering from red muscles disease was studied by histological and histochemical staining methods. The main characters of diseased clam are that the histological structures were irregularly changed, the epithelial cells swelled and detached. Some abnormal structures were observed in tissues of gills, mantles, digestive diverticulum, etc., e. g. strong basophilic granules, acidophilic granules and protozoan. Histochemical studies, on the other hand, indicate that amount of amylose and activity of phosphatase appear obvious changes, e. g. the content of amylose increases in the absorptive cells of digestive diverticulum and intestine.The activity of alkaline phosphatase (AKP) increases and the acid phosphatase (ACP) decreases in the tissue of digestive diverticulum and digestive tract, while in the gill tissues, the activity of ACP increases and AKP decreases.