Soveri T, Lindberg L A
Department of Anatomy and Embryology, College of Veterinary Medicine, Helsinki, Finland.
Acta Histochem. 1993 Sep;95(1):117-24. doi: 10.1016/S0065-1281(11)80397-1.
Samples from the rumen, reticulum and omasum of 26 reindeer calves were taken during the winter season. Non-specific alkaline and acid phosphatases, cytochrome and amine oxidases as well as succinate, lactate and 3-hydroxybutyrate dehydrogenases were demonstrated in the epithelium histochemically. The phosphatases were usually present in all the epithelial layers, whereas the activities of the other enzymes decreased in the outer layers and could not be demonstrated in the stratum corneum. The activity of alkaline phosphatase seemed to be highest in the reticulum and lowest in the omasum. The reason for the higher activity of this enzyme in epithelial taps in the rumen and omasum and in the reticular and omasal papillae may be the greater need for effective vertical transcellular transport in these regions. There was a tendency for enzymes other than phosphatases to be more active in the rumen than in the other forestomachs, which probably reflects the higher metabolic activity of the ruminal epithelium. No clear differences between early and late winter could be demonstrated.
在冬季采集了26头驯鹿幼崽瘤胃、网胃和瓣胃的样本。通过组织化学方法在上皮组织中证实了非特异性碱性和酸性磷酸酶、细胞色素和胺氧化酶以及琥珀酸、乳酸和3-羟基丁酸脱氢酶的存在。磷酸酶通常存在于所有上皮层，而其他酶的活性在外层降低，在角质层中无法证实。碱性磷酸酶的活性似乎在网胃中最高，在瓣胃中最低。该酶在瘤胃和瓣胃的上皮组织以及网胃和瓣胃乳头中活性较高的原因可能是这些区域对有效的垂直跨细胞转运有更大的需求。除磷酸酶外的其他酶在瘤胃中的活性往往比在其他前胃中更高，这可能反映了瘤胃上皮更高的代谢活性。未发现冬初和冬末之间有明显差异。
