Mittal A K, Rai A K, Banerjee T K, Agarwal S K
Histochemistry. 1976 Aug 25;48(3):177-85. doi: 10.1007/BF00497453.
Localization and characterization of different lipids in the cellular constituents of the skin of Heteropneustes fossilis has been made using several histochemical techniques. High contents of cholesterol, its esters and phospholipids have been correlated with the metabolically active state of the basal cells undergoing cell proliferation and differentiation. The polygonal cells in the outermost layer of the epidermis, though rich in phospholipid contain small amounts of cholesterol and its esters. This has been correlated with the metabolically less active state of theses cells. Neutral lipids and phospholipids in the polygonal cells of the outermost layer may contribute to the contents of surface slime and act as an efficient barrier for the penetration of water through the skin. The deposits of neutral lipids in the subcutis may provide energy during the period of fasting, act as a barrier for water diffusion through the skin and serve as shock absorbing pads protecting the fish from mechanical injury.
利用多种组织化学技术，对印度胡鲶皮肤细胞成分中的不同脂质进行了定位和特性分析。胆固醇、其酯类和磷脂的高含量与正在经历细胞增殖和分化的基底细胞的代谢活跃状态相关。表皮最外层的多边形细胞虽然富含磷脂，但胆固醇及其酯类含量较少。这与这些细胞代谢活性较低的状态相关。最外层多边形细胞中的中性脂质和磷脂可能有助于表面黏液的形成，并作为水通过皮肤渗透的有效屏障。皮下组织中中性脂质的沉积可能在禁食期间提供能量，作为水通过皮肤扩散的屏障，并充当减震垫，保护鱼类免受机械损伤。
