The ultrastructure of the uterine epithelium of the pig during the estrous cycle and early pregnancy

Stroband, H.W.J.; Taverne, Nico; Langenfeld, Katja; Barends, P.M.G.

doi:10.1007/bf00219003

Cited by 46 publications

(32 citation statements)

References 20 publications

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“…The different developmental stages of pig embryos and their general morphological characteristics, as described in this study, are in accordance with previous data (Hunter, 1974;Anderson, 1978;Lindner & Wright, 1978;Geisert et al, 1982;Stroband et al, 1984Stroband et al, , 1986.…”

Section: Discussionsupporting

confidence: 92%

Integrity of the preimplantation pig blastocyst during expansion and loss of polar trophectoderm (Rauber cells) and the morphology of the embryoblast as an indicator for developmental stage

Barends¹,

Stroband²,

Taverne³

et al. 1989

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Section: Discussionsupporting

confidence: 92%

Integrity of the preimplantation pig blastocyst during expansion and loss of polar trophectoderm (Rauber cells) and the morphology of the embryoblast as an indicator for developmental stage

Barends¹,

Stroband²,

Taverne³

et al. 1989

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“…Although deposits of this carbohydrate increased to day 16 in the cyclic pig, frequent association of this substance with mitochondria, endoplasmic reticulum, and membrane whorls, which is also observed in human uterine epithelium (Nilsson, 1962;Wynn and Harris, 1967), probably reflects increased glycogenolysis. This carbohydrate seemed to disappear abruptly between days 16 and 19, in contrast to the gradual decrease in glycogen content between day 12 and day 19 described by Stroband et al (1986).…”

Section: Discussioncontrasting

confidence: 78%

Structural changes in the luminal epithelium of the porcine uterus between days 10 and 19 of the estrous cycle

Keys

King

1989

Am. J. Anat.

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Light and electron microscopy were used to study the morphology of uterine luminal epithelium from 4 or 5 gilts slaughtered on each of days 10, 13, 16, and 19 of the estrous cycle. Ultrastructural evidence indicated that metabolic activity and accumulation of glycogen by the uterine epithelium increased between days 10 and 16 of the estrous cycle. This phase of high synthetic activity had been terminated by day 19, as evidenced by the reduction or absence of glycogen deposits and decreased incidence of organelles associated with synthetic activity. Diffuse degeneration of epithelial cells occurred throughout the period of study but was maximal between days 16 and 19. Mitotic activity indicated that cell replacement also occurred between day 16 and day 19.

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“…At later stages (dioestrus, and late dioestrus/d 11 and d 19), the PR levels in the surface epithelium of the present study were low. It has been shown that the morphology of luminal epithelial secretory cells did not differ between cyclic and pregnant gilts up to d10 (Stroband et al 1986). Our present study supports the lack of difference between cyclic and inseminated animals as the pattern of PR presence in the surface epithelium was similar at comparable stages.…”

Section: Discussionmentioning

confidence: 98%

Immunohistochemical studies on the progesterone receptor (PR) in the sow uterus during the oestrous cycle and in inseminated sows at oestrus and early pregnancy

Sukjumlong¹,

Dalin²,

Sahlin³

et al. 2005

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Physiological changes in the sow uterus involve the regulation by progesterone and its receptor proteins (PR). Therefore, the aim of the present study was to investigate the localization of PR during different stages of the oestrous cycle and in inseminated sows during early pregnancy by use of immunohistochemistry. Uterine samples were collected from cyclic and inseminated sows at different stages of the oestrous cycle and early pregnancy. The samples were fixed in 10% formaldehyde and embedded in paraffin. Immunohistochemistry was done by use of a mouse monoclonal antibody to PR. The highest PR immunostaining in the surface epithelium was observed at oestrus/5 -6 h after artificial insemination (AI) and early dioestrus/70 h after AI. In the glandular epithelium, the highest level of PR was found at oestrus with the lowest at late dioestrus/d 19. Higher levels of PR were observed in inseminated groups compared with cyclic sows. In the myometrium, a high level of PR was found at oestrus, while stromal PR cells were constantly present throughout the oestrous cycle and at different stages of early pregnancy. In conclusion, this study shows that the immunopresence of PR in the sow uterus differed between uterine compartments at the same reproductive stage. Differences were also found for some uterine compartments between cyclic and inseminated/early pregnant sows. The relatively consistent immunostaining of PR in the stroma strengthens a stromal role in the regulation of physiological activities in the sow uterus during the oestrous cycle as well as early pregnancy.

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The ultrastructure of the uterine epithelium of the pig during the estrous cycle and early pregnancy

Cited by 46 publications

References 20 publications

Integrity of the preimplantation pig blastocyst during expansion and loss of polar trophectoderm (Rauber cells) and the morphology of the embryoblast as an indicator for developmental stage

Integrity of the preimplantation pig blastocyst during expansion and loss of polar trophectoderm (Rauber cells) and the morphology of the embryoblast as an indicator for developmental stage

Structural changes in the luminal epithelium of the porcine uterus between days 10 and 19 of the estrous cycle

Immunohistochemical studies on the progesterone receptor (PR) in the sow uterus during the oestrous cycle and in inseminated sows at oestrus and early pregnancy

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