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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Immunofluorescence localization of cystatins in human lacrimal gland and in the exorbital lacrimal gland of the rat.

Cystatins are widely distributed natural inhibitors of cysteine proteinase. They occur both intra and extracellularly in various cells and tissue fluids including tears. Using an immunofluorescence technique with antibodies against rat cystatin S, an inhibitor of submandibular gland origin, cystatin-like immunoreactive material was demonstrated in the acinar cells of the exorbital lacrimal gland of the rat. Administration of the cholinergic agonist carbachol caused a depletion of cystatin from the acinar cells. This depletion was followed by a partial restitution in 6-8 h. Administration of the beta-adrenergic agonist isoproterenol for 4 days, which caused a marked hypertrophy of the submandibular gland, had no effect on the structure, weight, or cystatin content of the exorbital lacrimal gland. After such treatment, however, single large cells with intense staining for cystatin were encountered. Cystatin-like immunoreactive material was also demonstrated in human lacrimal gland using antibodies against human cystatin S. These data suggest the notion that tear cystatins are secreted by the lacrimal glands.[1]

References

  1. Immunofluorescence localization of cystatins in human lacrimal gland and in the exorbital lacrimal gland of the rat. Takahashi, M., Honda, Y., Ogawa, K., Barka, T. Acta ophthalmologica. (1992) [Pubmed]
 
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