On the histology and ultrastructure of the Harderian gland in rabbits

Bjoerkman, N; Nicander, Lennart; Schantz, B

doi:10.1007/bf00344641

Cited by 36 publications

(10 citation statements)

References 11 publications

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“…Myoepithelial cells invest Harderian gland secretory units of Didelphis in a similar manner to that described in those Australian marsupial (Green 1963) and eutherian mammal species examined (Chiquoine 1958;Bj6rkman et al 1960;Woodhouse and Rhodin 1963;Bucana and Nadakavukaren 1972;Brownscheidle and Niewenhuis 1978). Ultrastructurally, the apparently serous tubuloacinar secretory units of Didelphis consist of a single cell type that exhibits scattered profiles of granular endoplasmic reticulum, small scattered Golgi complexes and numerous secretory granules that vary in size and electron density.…”

Section: Discussionmentioning

confidence: 79%

“…It is a prominent structure in rodents but may be absent in species such as bats, carnivores and primates (see review: Sakai 1981). To date several morphological and/or histochemical studies have characterized this gland in the mouse (Woodhouse and Rhodin 1963;Watanabe 1980;Strum and Shear 1982), rat (Kelenyi and Orban 1965;Brownscheidle and Niewenhuis 1978), hamster (Bucana and Nadakavukaren 1972;Payne et al 1985), rabbit (Bj6rkman et al 1960;Wooding 1980), Mongolian gerbil (Sakai and Yohro 1981 ;Kaiho and Ichikawa 1982;Johnston etal. 1983), nine banded armadillo (Weaker 1981), Australian plains mouse and the musk shrew (Sakai 1989).…”

Section: Introductionmentioning

confidence: 99%

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Morphological observations on the Harderian gland of the North American opossum (Didelphis virginiana)

Krause

McMenamin

1992

Anat Embryol

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The Harderian gland of the North American opossum (Didelphis virginiana) is large and well developed, despite the absence of a nictitating membrane in the adult of this species. The elongate glands are surrounded by a delicate connective tissue capsule from which thin septae extend, subdividing the gland into numerous lobules. The secretory units of the opossum Harderian gland are drained by a well defined but not extensive intralobular and interlobular duct system. Most of the secretory end pieces consist of tubulo-alveolar units with widely dilated lumina filled with secretory product. Numerous intact lipid vesicles suspended within an amorphous material constitute the luminal contents. Cells lining the tubulo-alveolar secretory end-pieces are usually columnar in shape, and characterized by numerous lipid-containing secretory vesicles and aggregations of poly-tubular complexes 40-60 nm in diameter. In addition, these cells contain numerous large irregularly shaped mitochondria, whose matrix is of considerable electron density. Intralobular and interlobular ducts are lined by electron-lucent epithelial cells that lack both the lipid-containing vesicles and the large mitochondria, although typical smaller mitochondria are found scattered within the cytoplasm. Both secretory end-pieces and ductal elements are invested by an abundance of myoepithelial cells. A second, smaller serous type of secretory unit may occur near the centre of some Harderian gland lobules. In these units secretory tubules and acini are compactly arranged surrounding a narrow lumen. Serous cells are pyramidal in shape and the cytoplasm is characterized by numerous electron-dense secretory granules and scattered profiles of rough endoplasmic reticulum.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Morphological observations on the Harderian gland of the North American opossum (Didelphis virginiana)

Krause

McMenamin

1992

Anat Embryol

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“…The exact proportion of tear production by each gland has not been reported. The Harderian gland in the rabbit produces lipids, especially in the pink lobe . Due to this lipid production, the Harderian gland is difficult to visualize ultrasonographically and to differentiate it from retrobulbar fat.…”

Section: Discussionmentioning

confidence: 99%

“…The Harderian gland of the rabbit is located infraorbitally between the eyeball and medial or ventral part of the orbit and is in contact with the nictitating membrane . It is divided into a white lobe, which is smaller and located more rostral, and a larger pink lobe in the ventral part of the orbit.…”

Section: Introductionmentioning

confidence: 99%

“…It is divided into a white lobe, which is smaller and located more rostral, and a larger pink lobe in the ventral part of the orbit. Both lobes are divided by a thin band of connective tissue and converge into a single excretory duct which opens into the lower posterior part of the third eyelid near the conjunctival sac . The pink lobe consists of cuboidal cells and contains large lipid vacuoles, producing more lipids than the white lobe.…”

Section: Introductionmentioning

confidence: 99%

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