Postnatal Development of the Mongolian Gerbil Uterus

Kress, Annetrudi; Mardi, L.

doi:10.1159/000146825

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…4,6). There are hardly any of the heteromorphic protrusions as described by Kress and Mardi (1990a) for the uterine luminal cells (Fig. 5).…”

Section: Day 1 Pnmentioning

confidence: 80%

Postnatal development of the cervical epithelium in the Mongolian gerbil

Kress¹,

Mardi²

1992

Anat. Rec.

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This study analyzes the postnatal development of the Mongolian gerbil's cervical epithelium, in relation to its future functions. In the newborn gerbil the outline of the cervical canal is smooth, showing hardly any signs of folding. The epithelium consists of 1 to 3 layers. The cervical cells have rounded apices of regular outline and contain a large amount of glycogen. The first secretory products of specific mucus type appear about day 23 postnatally (p.n.). Initially two types of vesicles can be identified, as compared with only one type in sexually mature animals. The process of mucification begins in the vagina and the external os of the cervix and spreads towards the cervical horns. The cervical canal, besides growing longer, becomes increasingly folded during development. At about day 50 p.n., with the onset of sexual maturity, an upper endocervix and a lower ectocervix can be distinguished within the cervical canal. In the fully mature animal, the endocervix consists of 4 to 5 layers, in which apical cells mucify and exfoliate. In the ectocervix, the epithelium can be divided into 4 to 5 basal layers and 5 to 7 upper layers which mucify, keratinize, and exfoliate, according to the cyclic phases of the vagina. Diapedesis of leucocytes through the epithelium starts around day 45 p.n.

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“…4,6). There are hardly any of the heteromorphic protrusions as described by Kress and Mardi (1990a) for the uterine luminal cells (Fig. 5).…”

Section: Day 1 Pnmentioning

confidence: 80%

Postnatal development of the cervical epithelium in the Mongolian gerbil

Kress¹,

Mardi²

1992

Anat. Rec.

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“…Experiments have shown that rising levels of estrogen suppress the formation of solitary cilia in the uteri (Tachi, 1984). Solitary cilia have been found in the uteri during postnatal development in mice (Plapinger, 1982) or Mongolian gerbils (Kress & Mardi, 1990). They disappeared at sexual maturity, in eutheria, solitary cilia are rarely seen in actively cycling animals.…”

Section: Discussionmentioning

confidence: 99%

Changes in the oviducal epithelium during the estrous cycle in the marsupial Monodelphis domestica

Kress

Morson

2007

Journal of Anatomy

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The Monodelphis oviduct can be divided into four anatomical segments: preampulla (comprising fimbriae and infundibulum), ampulla, isthmus with crypts and uterotubal junction. Ovaries are enclosed in a periovarial sac, the bursa, and in some specimens tubules of an epoophoron could be identified. In both structures non-ciliated cells develop small translucent vesicles, which accumulate in the cell apices and presumably produce fluid as often seen in the bursa and in the tubules of the epooophoron. These vesicles do not stain with Alcian blue or PAS. The same applies also to the non-ciliated cells of the fimbriae. The oviducal epithelium of ampulla and the surface epithelium of the isthmus consisting of ciliated and non-ciliated, secretory cells undergo considerable changes during the estrous cycle. Proestrus shows low numbers of ciliated cells, some are in the process of neo-ciliogenesis, non-ciliated cells carry solitary cilia and few remnant secretory granules from the previous cycle may be found. At estrus the amount of ciliated cells in ampulla and isthmus has increased, most non-cililated cells lost the solitary cilia, developed longer microvilli and formed numerous secretory granules in their cell apices. At postestrus secretory products, often surrounded by membranes, are extruded into the oviducal lumen and contribute towards egg coat formation. First signs of deciliation processes are apparent. Solitary cilia reappear.At metestrus only few secretory cells are left with some secretory material. The lumen is often filled with shed cilia and cell apices. Proliferation of basal bodies within non-secretory cells indicate the formation of new ciliated cells.The non-ciliated epithelial cells of the isthmic crypts form no secretory granules but accumulate a great number of translucent vesicles, which in contrast to the secretory granules do not stain with Alcian blue or PAS.

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“…First attempts in this field are the studies of Bertschinger [ 1987], Kress et al [1989] and Kress and Mardi [1990]. There are no reports on work on changes in the glandular epithelium during the period of post natal development, whether in the gerbil or in rodents generally.…”

Section: Introductionmentioning

confidence: 99%

Postnatal Development of the Mongolian Gerbil Uterine Glands

Kress

Mardi²

1990

Cells Tissues Organs

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The development of gerbil uterine glands has been described. Gland formation starts about day 6 postnatally (p.n.). At day 10 p.n. the glandular lumen contains already some fluid, and the glandular cells are in an activated state. The apical shape of the glandular cells depends mainly on the width of the lumen. Secretory vesicles in early developmental stages are electron-lucent. As sexual maturity is reached, secretory granules become electron-dense. This change in secretory granular structure indicates a change in the quality of uterine gland fluid.

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Postnatal Development of the Mongolian Gerbil Uterus

Cited by 8 publications

References 11 publications

Postnatal development of the cervical epithelium in the Mongolian gerbil

Postnatal development of the cervical epithelium in the Mongolian gerbil

Changes in the oviducal epithelium during the estrous cycle in the marsupial Monodelphis domestica

Postnatal Development of the Mongolian Gerbil Uterine Glands

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