Morphological, histochemical and immunohistochemical characterization of secretory production of the ciliary glands in the porcine eyelid

Published: 30 June 2009
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In addition to performing general histology and cytology of the ciliary glands of the miniature pig, we studied the localization of glycoconjugates and b-defensins in these glands with the use of carbohydrate histochemical and immunohistochemical methods. The secretory cells of the glands were equipped with non-homogeneous secretory granules, a welldeveloped Golgi apparatus and rough endoplasmic reticulum. The secretory epithelium and luminal secretion of the glands contained large amounts of neutral and acidic glycoconjugates with various saccharide residues (a-L-Fuc, b-DGal, a-D-GalNAc and sialic acid). The sebaceous glands and tarsal glands also exhibited positive reactions to most of the histochemical methods. Additionally, the antimicrobial peptide group of b-defensins was demonstrated to be products of the ciliary glands, as well as the sebaceous glands and tarsal glands. The results obtained are discussed with regard to the specific function of the ciliary glandular secretions. These secretory products may be related to the moistening and general protection of the skin surface of the eyelid and ocular surface.

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Yasui, T., Tsukise, A., Nara, T., Kuwahara, Y., & Meyer, W. (2009). Morphological, histochemical and immunohistochemical characterization of secretory production of the ciliary glands in the porcine eyelid. European Journal of Histochemistry, 50(2), 99–108. https://doi.org/10.4081/979