Different immunolocalizations of cathepsins B, H, and L in the liver.
Different localizations of cathepsin B, H, and L in normal rat liver were revealed immunohistochemically with anticathepsin Fab'-horseradish peroxidase conjugates. Staining of cathepsin B was strong in the periportal sinusoids, possibly in Kupffer cells; and weaker in panlobular hepatocytes. Staining of cathepsin H was strong in panlobular hepatocytes, especially in the periphery of the cytoplasm, possibly representing the peribiliary dense bodies; and weaker in periportal sinusoidal cells, possibly Kupffer cells. Staining of cathepsin L was strongest in centrilobular hepatocytes and weaker in periportal sinusoidal cells, possibly Kupffer cells. These findings, revealed for the first time in the present study, show that the histologic and intracellular localizations of the three cathepsins are different, suggesting that they have different roles in degradation of exogenous and endogenous proteins.[1]References
- Different immunolocalizations of cathepsins B, H, and L in the liver. Ii, K., Hizawa, K., Kominami, E., Bando, Y., Katunuma, N. J. Histochem. Cytochem. (1985) [Pubmed]
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