Periparturient Concentrations of Prolactin, Progesterone and the Estrogens in Blood Plasma of Cows Retaining and not Retaining Fetal Membranes2

Chew, Boon P.; Keller, H.; Erb, R.E.; Malven, P.V.

doi:10.2527/jas1977.4461055x

Cited by 56 publications

(17 citation statements)

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“…Takagi et al [24] reported no group differences in the concentrations of E 1 S at the time of parturition and at 6 h after parturition. Chew et al [22] also reported no group differences for estrone and estradiol-17α, but did report decreased peripartum plasma concentrations of E 2 β in cows with RFM. In this study, no significant differences were observed in the concentrations of E 1 S between the normal and RFM groups of singleton cows on any day during the last 10 days of gestation.…”

Section: Discussionmentioning

confidence: 98%

“…Agthe and Kolm [23] reported a marked increase in the plasma E 2 β concentration within 12 h before parturition in cows with RFM compared with those without RFM. Some authors h a v e r e p o r t e d h i g he r b l o od p r o g e s t e r on e concentrations but lower estrogen concentrations in peripartum cows with RFM [8,22]. The abovementioned previous studies indicate that cows with RFM show lower than normal plasma E 1 S or E 2 β concentrations, which suggests that immaturity of the placentome is a possible cause of RFM.…”

mentioning

confidence: 92%

“…Some authors [9,21] ha ve reported low peripartum plasma concentrations of E 1 S in cows with RFM compared with cows without RFM, whereas Chew et al [22] reported no group differences for estrone and estradiol-17α but decreased peripartum plasma concentrations of E 2 β in cows with RFM. Agthe and Kolm [23] reported a marked increase in the plasma E 2 β concentration within 12 h before parturition in cows with RFM compared with those without RFM.…”

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confidence: 99%

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Peripartum Changes in Plasma Estrone Sulfate and Estradiol-17.BETA. Profiles Associated With and Without the Retention of Fetal Membranes in Holstein-Friesian Cattle

et al. 2007

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Abstract. The aim of this study was to evaluate the changes in plasma concentrations of estrone sulfate (E1S) and estradiol-17β (E2β) during the peripartum period (from day 10 prepartum to day 1 postpartum) associated with and without retention of fetal membranes (RFM) in Holstein-Friesian cattle (n=42). Plasma samples were analyzed for E1S and E2β by ELISA. All parturitions were spontaneous and normal. Of 38 cattle delivering singletons, 29 had no RFM (singleton-normal group) and nine had RFM for more than 12 h (singleton-RFM group). Four cows gave birth to twins, and each twin had its own fetal membrane (FM). Two twinning cows expelled both FMs normally within 12 h (twin-normal group). In the remaining 2 twinning cows (twin-RFM group), the FM was expelled normally for one twin (first), while the FM of the other (second) was retained. There were no significant differences in the E1S concentrations or their increments from the concentrations on the preceding day between the normal and RFM groups of singleton cows on any peripartum day. The mean plasma E2β concentrations on each day from day 10 to day 3 prepartum were significantly lower (P<0.05) in the singleton-RFM group compared with the singleton-normal group; however, on days 2 and 1 prepartum, the increments in the E2β concentrations from the concentrations on the preceding days were significantly higher (P<0.05) in the singleton-RFM group than in the singleton-normal group. Thus, the plasma E1S concentrations just before parturition may not be associated with RFM. In the cows with RFM, the lower plasma E2β concentrations that were found prior to day 2 prepartum may have been associated with immature placentomes, and the rapid rise in plasma E2β within 1 to 2 days prior to calving may have produced asynchrony of placental and/or fetal maturation in relation to calving, thus resulting in RFM.

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Section: Discussionmentioning

confidence: 98%

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confidence: 92%

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confidence: 99%

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Peripartum Changes in Plasma Estrone Sulfate and Estradiol-17.BETA. Profiles Associated With and Without the Retention of Fetal Membranes in Holstein-Friesian Cattle

et al. 2007

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“…Very low 17-β-estradiol concentrations (0.1 ng/mL) decreased the in vitro growth of granulocyte colonies (cfu-G). Plasma concentrations of estrogens range from 0.02 ng/mL in early gestation to 0.3 ng/mL during mid-and late pregnancy, and peak between 4 and 8 ng/mL at calving (Chew et al, 1977). Hydrocortisone inhibited the growth of myeloid progenitors (cfu-G and cfu-M) at a concentration of 10 ng/mL.…”

Section: Discussionmentioning

confidence: 99%

Differential Effects of Steroids and Retinoids on Bovine Myelopoiesis in Vitro

Merris

Meyer

Duchateau

et al. 2004

Journal of Dairy Science

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Pregnancy and parturition are associated with physiological changes caused by steroid hormones. Alterations in number, maturity, and function of polymorphonuclear leukocytes observed in dairy cows at parturition suggest a common causative relationship with steroid hormones. This study was designed to investigate the effects of progesterone, 17-β-estradiol, and hydrocortisone on the proliferation of bovine progenitor cells. An in vitro culturing system was used, and colonies were scored after 7 d of incubation. At low concentrations, 17-β-estradiol inhibited proliferation of granulocyte progenitor cells. Hydrocortisone reduced growth of granulocyte and monocyte colonies, whereas myelopoiesis was not altered by progesterone. Furthermore, we studied the effect of retinoids on colony formation of bovine bone marrow cells. All-trans-and 9-cis-retinoic acid stimulated growth of granulocyte colonies and inhibited proliferation of the monocyte lineage. The addition of the 13-cis-isomer also increased numbers of granulocyte colony-forming units. This study indicates that steroid hormones may be responsible for alterations in the bovine hematopoietic profiles observed in circulation during the postpartum period. White blood cells, especially polymorphonuclear leukocytes, which are derived from bone marrow, are an important first line defense against mastitis. Therefore, these effects of steroids might contribute to the increased susceptibility of dairy cows to Escherichia coli mastitis. We furthermore hypothesize that an important role might be attributed to retinoic acid in its regulation of bovine myelopoiesis. Modulation of myelopoiesis in favor of the granulocyte lineage during the acute-phase reaction may be an adaptive mechanism designed to increase the capacity of first-line defense to intramammary infections. Received: October 8, 2003. Accepted: November 6, 2003 Corresponding author: C. Burvenich; e-mail: Christian.Burvenich @UGent.be. 1188(Key words: steroid hormone, retinoic acid, bone marrow, myelopoiesis) Abbreviation key: cfu-G = colony-forming unit-granulocyte, cfu-GM = colony-forming unit-granulocyte and monocyte, cfu-M = colony-forming unit-monocyte, cfutotal = colony-forming unit-total myeloid, FBS = fetal bovine serum, IMDM = Iscove's modified Dulbecco's Minimal Essential, PMN = polymorphonuclear leukocytes, RAR = retinoic acid receptor, RXR = retinoid X receptor.

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“…Em rebanhos leiteiros, essa patologia pode acometer entre 10 e 15% dos animais, com maior incidência em vacas multíparas (24,4%) (Kennedy, 1947;Erb et al, 1958;Callahan et al, 1971;Chew et al, 1977).…”

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Florfenicol associado ou não ao cloprostenol no tratamento de retenção de placenta em vacas leiteiras

Palhão

Pereira

Fernandes

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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Periparturient Concentrations of Prolactin, Progesterone and the Estrogens in Blood Plasma of Cows Retaining and not Retaining Fetal Membranes2

Cited by 56 publications

References 0 publications

Peripartum Changes in Plasma Estrone Sulfate and Estradiol-17.BETA. Profiles Associated With and Without the Retention of Fetal Membranes in Holstein-Friesian Cattle

Peripartum Changes in Plasma Estrone Sulfate and Estradiol-17.BETA. Profiles Associated With and Without the Retention of Fetal Membranes in Holstein-Friesian Cattle

Differential Effects of Steroids and Retinoids on Bovine Myelopoiesis in Vitro

Florfenicol associado ou não ao cloprostenol no tratamento de retenção de placenta em vacas leiteiras

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