Prostaglandine

Hoppen, H.-O.

doi:10.1007/978-3-642-96694-1_10

Cited by 1 publication

(1 citation statement)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vaginal inspection and cytological examinations of vaginal smears were performed, E 2 and P 4 concentrations in blood were measured and, retrospectively, histology of ovaries and endometrium was carried out in all bitches to assess their cycle stage. Hormone concentrations in blood are in agreement with data from literature (Concannon et al 1975(Concannon et al , 1989Edqvist et al 1975;Concannon 1984;Dreier et al 1987;Hoppen 1990). Slightly elevated E 2 concentrations in anoestrus indicate that these animals are at the final stage of this phase.…”

Section: Discussionsupporting

confidence: 89%

Morphological Changes and Proliferative Activity in the Oviductal Epithelium during Hormonally Defined Stages of the Oestrous Cycle in the Bitch

Steinhauer¹,

Boos

Günzel‐Apel³

2004

Reprod Domestic Animals

View full text Add to dashboard Cite

The aim of the present study was to investigate morphological changes and proliferative activities in the epithelium of the canine oviduct with regard to the part of the oviduct - possibly indicating the existence of a locally restricted sperm reservoir - and the stage of the oestrous cycle. Nine healthy adult nulliparous bitches were submitted to ovariohysterectomy at three stages of the cycle: anoestrus (n = 3), late follicular phase (n = 3) and mid-luteal phase (n = 3). The whole oviduct ranging from the utero-tubal junction (UTJ) to the infundibulum (IN) was collected, divided into UTJ, IN plus six segments of equal length, i.e. eight oviductal specimens per animal were studied by light microscopy. Morphological characteristics of ovaries and endometrium were recorded macroscopically and verified histologically. The height of oviduct epithelial cells and percentage of ciliated cells (CC) were assessed and the respective data analysed statistically. Proliferative activity was immunohistochemically visualized by means of Ki-67 antigen detection. Blood was collected and concentrations of oestradiol-17beta and progesterone (P(4)) were measured. Within the IN and five of the six tissue samples collected from the ampulla and isthmus in anoestrous bitches, the oviductal surface epithelium consisted of low cuboidal cells demonstrating a uniform dark staining intensity. Only a very few scattered lighter staining CC could be detected. Under the influence of oestrogens during late follicular phase, the oviductal epithelium was highly differentiated. Lighter stained CC with apically located nuclei were easily distinguishable from basophilic secretory cells with apical cytoplasmic protrusions. Cell height and percentage of CC were significantly higher than in anoestrus (p

show abstract

Section: Discussionsupporting

confidence: 89%