Hormonal and immunological changes in blood and mammary secretion in the sow at parturition

Österlundh, Ingrid; Holst, H.; Magnusson, Ulf

doi:10.1016/s0093-691x(98)00153-8

Cited by 30 publications

(26 citation statements)

References 22 publications

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“…This was also found to be the case in cows [58][59][60]. Österlundh et al [14] reported lower concentrations of E2 in colostrum/milk after parturition (< 100 pg·mL -1 vs. > 500 pg·mL -1 ) than in the present study despite similar concentrations in plasma. This was to be expected since these authors measured E2 in skimmed milk mammary secretions instead of in whole colostrum as was the case in the present study.…”

Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidssupporting

confidence: 66%

“…Oestradiol-17β has already been assayed in sow colostrum, but only after parturition [14]. Our data show a significant correlation between concentrations of E2 in colostrum and those in plasma, especially during parturition.…”

Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidsmentioning

confidence: 51%

“…This was to be expected since these authors measured E2 in skimmed milk mammary secretions instead of in whole colostrum as was the case in the present study. Indeed, oestrogen levels are lower when measured in skimmed [14,61] than in whole colostrum [62]. Moreover, as was the case for P4, E2 is preferentially bound to the cream fraction in cows' milk [57,63].…”

Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidsmentioning

confidence: 95%

“…Assays of hormones in fluids such as urine, saliva or milk are an alternative to invasive blood collection and could be used for measuring hormone variations around parturition. Indeed, E2 and PRL have been assayed in sow milk [13,14], and milk P4 is currently used for gestation diagnosis in ruminants [15,16]. The aim of the present study was to determine patterns of variation of P4, PRL, E2, cortisol, lactose and IgG in plasma and to compare them to variations in colostrum/ lactoserum or saliva around parturition in sows.…”

Section: Introductionmentioning

confidence: 99%

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Hormones, IgG and lactose changes around parturition in plasma, and colostrum or saliva of multiparous sows

et al. 2004

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-Blood, colostrum and saliva samples were serially taken from 6 multiparous sows from day 109 of gestation until day 3 postpartum. Plasma was assayed for oestradiol-17β (E2), progesterone (P4), prolactin (PRL), cortisol, immunoglobulin G (IgG) and lactose. Colostrum was assayed for E2, P4, IgG and lactose. Lactoserum, obtained after ultra centrifugation of colostrum, was assayed for PRL. Saliva was assayed for cortisol. Time-related variations in hormone, IgG and lactose concentrations measured in plasma were parallel to those measured in colostrum, lactoserum or saliva. However, the concentrations were higher in colostrum or lactoserum and lower in saliva than in plasma. Ratios of concentrations of cortisol in saliva and PRL in lactoserum over those in plasma did not vary with time and averaged 0.2 and 1.6, respectively. Conversely, the ratios of concentrations of E2 and P4 in colostrum over those in plasma varied with time (P < 0.05) but were quite constant before the end of parturition, averaging 2.7 and 3.6, respectively. The ratios of concentrations of IgG and lactose in colostrum over those in plasma also varied with time (P < 0.05). The concentrations of hormones in plasma on the one hand and in colostrum, lactoserum or saliva on the other hand were significantly correlated but correlations varied with time (PRL across periods: r = 0.31; cortisol across periods: r = 0.60; E2 during parturition: r = 0.83; P4 before parturition: r = 0.82; P4 during parturition: r = 0.67). The present results indicate that around parturition, assays of hormones in colostrum or saliva can be used to study the hormonal status of sows. Furthermore, variations in colostrum and plasma concentrations of IgG and lactose are good indicators of the transition from colostrum to milk synthesis. sow / parturition / steroid / prolactin / lactose / immunoglobulins

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Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidssupporting

confidence: 66%

Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidsmentioning

confidence: 51%

Section: Comparison Of Hormone Concentrations In Plasma and Other Fluidsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hormones, IgG and lactose changes around parturition in plasma, and colostrum or saliva of multiparous sows

et al. 2004

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“…These results support the idea that lactocrine regulation of neonatal uterine ESR1 expression involves complementary actions at transcriptional and translational levels. Interestingly, the prototypical MbF estradiol (Osterlundh et al 1998) can increase ESR1 mRNA stability and decrease transcript degradation (Ing & Ott 1999). Such actions could contribute to conditions associated with reduced uterine ESR1 mRNA levels observed in replacer-fed gilts compared with nursing gilts on PND 2.…”

Section: Discussionmentioning

confidence: 99%

Milk-borne lactocrine-acting factors affect gene expression patterns in the developing neonatal porcine uterus

Chen¹,

Frankshun²,

Wiley³

et al. 2011

Reproduction

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Lactocrine communication of milk-borne bioactive factors (MbFs) from mother to offspring through nursing can affect neonatal development with lasting consequences. Relaxin (RLX), a lactocrine-active peptide found in porcine colostrum, stimulates estrogen receptor-a (ESR1) expression required for uterine development shortly after birth (postnatal dayZPND 0). Whether other MbFs or cooperative lactocrine mechanisms affect the neonatal uterine developmental program is unknown. To determine the effects of age, nursing, and exogenous RLX on gene expression associated with uterine development, gilts (nZ4-5/group) were assigned to nurse ad libitum or to receive milk replacer, with or without exogenous RLX (20 mg/kg BW i.m./6 h for 48 h), from birth to PND 2 when uteri were collected. Body weight and uterine weight increased (P!0.05) similarly from birth to PND 2 in all gilts. However, colostrum consumption was required for normal uterine ESR1, vascular endothelial growth factor (VEGFA), matrix metalloproteinase 9 (MMP9), and RLX receptor (RXFP1) protein and/or transcript expression on PND 2. Uterine ESR1, VEGFA, and MMP9 protein levels were below (P!0.01) the assay sensitivity in replacer-fed gilts. Supplemental RLX increased (P!0.05) uterine ESR1 protein and mRNA in nursed gilts, as well as VEGFA protein in nursed and VEGFA mRNA in both nursed and replacer-fed gilts. RLX treatment did not affect uterine MMP9 mRNA levels. When compared with replacer-fed gilts on PND 2, uterine RXFP1 mRNA was reduced (P!0.05) in nursed gilts and in RLX-supplemented replacer-fed gilts. These results constitute the first evidence that establishment of the neonatal porcine uterine developmental program requires maternal lactocrine support.

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Colibacillosis

Fairbrother¹,

Nadeau²

2019

Diseases of Swine

154

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Hormonal and immunological changes in blood and mammary secretion in the sow at parturition

Cited by 30 publications

References 22 publications

Hormones, IgG and lactose changes around parturition in plasma, and colostrum or saliva of multiparous sows

Hormones, IgG and lactose changes around parturition in plasma, and colostrum or saliva of multiparous sows

Milk-borne lactocrine-acting factors affect gene expression patterns in the developing neonatal porcine uterus

Colibacillosis

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