Corpus Luteum Activity and Prostaglandin Levels After Parturition in Cows With Retained Fetal Membranes

Matton, P.; Adelakoun, V.; Dufour, J. J.

doi:10.4141/cjas87-003

Cited by 17 publications

(9 citation statements)

References 16 publications

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“…For spontaneous retained placenta, several studies have observed no significant difference in oestrogen concentrations from normally calving cows (Matton and others 1979, Elecko and others 1982, Inaba and others 1986). Agthe and Kolm (1975), however, found that cows with retained placenta had a marked increase in oestrogen concentration within 12 hours post partum, whereas there was little change in its mean concentration in normal cows.…”

Section: Aetiology Of Retained Placentamentioning

confidence: 98%

Bovine retained placenta: aetiology, pathogenesis and economic loss

1996

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The literature on the effects and causes of retained placenta in the cow is reviewed. On a herd basis the condition can adversely affect milk yield and fertility, but on an individual cow basis the effects are unpredictable. The aetiology of retained placenta has been extensively studied and many causal factors have been implicated, but little is known of how many of them cause the condition. As a result its prevention and prediction is uncertain, primarily because of the lack of knowledge of the normal process of placental release. Vascular changes and uterine contractions play a role in placental release, but current opinion suggests that the primary cause of retained placenta is the retention of the feto-maternal union. Release only occurs after a process of maturation, which involves hormonal and structural changes. The factors which are thought to influence these changes, and thus cause the condition, are discussed.

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Section: Aetiology Of Retained Placentamentioning

confidence: 98%

Bovine retained placenta: aetiology, pathogenesis and economic loss

1996

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“…Lamming et • al. 1981, Lindell et al 1982a, Thatcher et al 1982, Larsson et al 1984, Matton et al 1987, Eldon 1991, Kindahl et al 1992 suggests that the progesterone and/or PGF 2 a profiles provide basic information on the pathophysiological changes prior to or after the reestablishment of the oestrous cycle. Moreover, the bovine uterus and placenta are considered to be the main source of prostaglandin during early pp (Lindell et al l 982b, Guilbault et al 1984, Kankofer et al l 994).…”

Section: Introductionmentioning

confidence: 99%

“…As a result, retained foetal membranes and the subsequent development of endometritis have been associated with a disturbed synthesis and metabolism of PGF 2 a in the uterus (Lindell et al I 982a, Thatcher et al l 982, Bosu et al l 984, Chassagne & Barnouin 1992), reflecting the degree of endometrial damage or repair , Fredriksson et al 1988. In cows with retained foetal membranes, a prolonged duration of high plasma levels of the main PGF 2 a metabolite ( 15-ketodihydro-PGF 2 a) was observed (Lindell et al l 982a, Fredriksson et al 1985, Matton et al 1987. From these studies it can be concluded that the duration and possibly the magnitude of the release of PGF ia are positively correlated to the time required for completion of uterine involution, and cyclical ovarian activity does not resume until the concentration of the PGF 2 a metabolite is again at a basal level.…”

Section: Introductionmentioning

confidence: 99%

Prostaglandin F2αMetabolite and Progesterone Profiles in Post-partum Cows with Retained Foetal Membranes

1996

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“…Gambarini (1989) determined concentration of PGEM and PGFM in peripheral blood and reported lower concentration of PGFM in cows with retained placenta compared with cows without retained placenta. In contrast to those results, some authors (Bosu et al, 1984;Peter & Bosu, 1987;Matton et al, 1987) found that cows with retained placental membranes had higher concentrations of PGFM in peripheral blood than cows with undisturbed separation. Bosu et al (1984) observed an increase in PGFM concentration in peripheral blood starting about 6 days before parturition in cows with retained placental membranes, whereas in animals withoutretained placental membranes, the increase occurred later, about 48 hours before delivery.…”

Section: Eicosanoids and The Release Of The Placental Membranesmentioning

confidence: 64%

Role of Eicosanoids in the Regulation of the Periparturient Period in Cattle

Kankofer¹,

Hoedemaker²

1993

Reprod Domest Anim

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Contents: In this review, the role of eicosanoids in regulation of parturition and the postpartum period was described with special emphasis on the bovine species. The metabolism of arachidonic acid and the production of eicosanoids during the peripartum period was discussed. Prostaglandin E2 and F2α (PGE2, PGF2α) play an important role in mechanisms controlling parturition. They are involved in luteolysis, uterine contractions and dilation of the cervix. Eicosanoids also seem to influence the loosening processes of the fetal membranes. However, in the literature, conflicting results were found. Many investigations suggested that retained placental membranes could be related to low PGF2α production and/ or an imbalance of arachidonic acid metabolism in the uterus. The possible role of the lipoxygenase pathway metabolite 15‐hydroxy‐eicosatetraenoic acid (15‐HETE) in expulsion of the fetal membranes was also discussed. As far as the postpartum period is concerned, a relationship between postpartum PGF2α release and the involution of the uterus was found. Cows with undisturbed uterine involution had higher PGF2α production than cows with delayed involution. In contrast to the positive effect of PGF2α on uterine involution, PGE2 seems to delay the involution processes. Further experiments are necessary in order to study the function of eicosanoids in mechanisms regulating parturition, release of the fetal placental membranes and involution of the uterus.

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Corpus Luteum Activity and Prostaglandin Levels After Parturition in Cows With Retained Fetal Membranes

Abstract: MATT'N, P., ADELAK''w, V. eNo Duroun, J. lgg7. Corpus

Cited by 17 publications

References 16 publications

Bovine retained placenta: aetiology, pathogenesis and economic loss

Bovine retained placenta: aetiology, pathogenesis and economic loss

Prostaglandin F2αMetabolite and Progesterone Profiles in Post-partum Cows with Retained Foetal Membranes

Role of Eicosanoids in the Regulation of the Periparturient Period in Cattle

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