Effect of restraint stress on plasma concentrations of cortisol, progesterone and pregnancy associated-glycoprotein-1 in pregnant heifers during late embryonic development

Szenci, O.; Karen, Aly; Bajcsy, Árpád Csaba; Gáspárdy, András; Sousa, N. M.; Beckers, J. F.

doi:10.1016/j.theriogenology.2011.05.030

Cited by 23 publications

(24 citation statements)

References 28 publications

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“…In otber words, tbe current study assessed possible impact of a brief stress on progesterone concentrations wbereas most previous studies examined tbe impact of cbronic stress. Furtber, beifers briefly exposed to acute restraint stress (2 b) during early pregnancy displayed increasing plasma cortisol levels but tbis stress response was not associated to any significant cbange in progesterone levels (Szenci et al, 2011). Overall, tbe results reported in tbis study provide new insigbts into possible impact of brief stress on plasma concentration of progesterone.…”

Section: Discussionmentioning

confidence: 75%

“…Transporting individuals from their usual living environment (e.g., from their cage, wild animals) to another place such as an experimental room is a typical handling stress, and progesterone levels may well be strongly and quickly influenced. This technical problem should also be investigated in veterinarian and stock breeding studies (Szenci et al, 2011), and also using non-invasive methods such as faecal or hair hormone assays (Bauer et al, 2008;Palme, 2012).…”

Section: Discussionmentioning

confidence: 99%

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Effect of a brief stress on progesterone plasma levels in pregnant and non-pregnant guinea pigs

Michel

Bonnet

2014

Animal Biol

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International audienceSteroid hormones are essential for vertebrate reproduction. They are involved in the regulation of major female reproductive events like ovulation, embryo implantation, or gestation. For instance, progesterone promotes foeto-maternal exchanges whereas glucocorticoids stimulate the mobilization of the required energy resources. However, glucocorticoids are key effectors of the stress response; chronic elevations of these hormones can exert negative effects on reproduction. Yet, little is known about the effects of a brief exposure to a stressor on the respective plasma concentrations of sex steroids and glucocorticoids, notably during pregnancy. We examined the impact of a brief stress (handling + 1.5 hours in a bag) on progesterone and cortisol plasma concentrations in pregnant and non-pregnant female guinea pigs. Analyses revealed that: 1) pregnant females exhibited higher baseline progesterone and cortisol concentrations compared to non-pregnant females, as expected; 2) cortisol concentrations increased rapidly following manipulation, revealing a typical hormonal stress response; and, 3) progesterone concentrations decreased on average by 50.9% following the brief stress period, both in pregnant and non-pregnant individuals. These experimental results show for the first time a drastic and rapid impact on progesterone concentration caused by a brief stress

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Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Effect of a brief stress on progesterone plasma levels in pregnant and non-pregnant guinea pigs

Michel

Bonnet

2014

Animal Biol

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“…11 As with previous results, 28 newly pregnant animals showed a higher susceptibility to C. burnetii infection, shown by a higher rate of shedding by first-parity dams at parturition. This situation could be more the consequence of adaptation to new metabolic demands 48 or restraint stress 43 than impaired immune function in heifers. 30 However, maternal immune suppression at parturition could promote infection recrudescence.…”

Section: Discussionmentioning

confidence: 99%

Coxiella burnetii total immunoglobulin G, phase I and phase II immunoglobulin G antibodies, and bacterial shedding in young dams in persistently infected dairy herds

et al. 2015

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Abstract. The current study examines Coxiella burnetii infection patterns in young dairy dams around the calving period in persistently infected high-producing dairy herds. Infection patterns were determined in terms of total immunoglobulin G (IgG) and phase-specific IgG antibodies by enzyme-linked immunosorbent assay and bacterial shedding by real-time polymerase chain reaction (qPCR). On days 171-177 of gestation, at parturition, and on days 15-21 and 91-97 postpartum, 7 firstparity cows and 7 second-parity cows were sampled for serology and qPCR. Total phase-specific I (PhI) and II (PhII) IgG antibodies were detected in 2 animals at days 171-177 of gestation. Four additional animals underwent seroconversion on days 91-97 postpartum. Three of 6 seropositive dams according to total IgG, showed a PhI+/PhII+ profile, whereas dams that seroconverted exhibited a PhI-/PhII+ (2/6) or PhI+/PhII-(1/6) profile. An indirect fluorescent antibody test for PhI and PhII immunoglobulin M (IgM) was performed on plasma samples from the shedding dams, confirming seropositivity in a first-parity dam that seroconverted, and detecting a sudden spike of PhI-IgM antibodies in 1 further dam. No relationship was detected in young C. burnetii-infected animals between total IgG, PhI and/or PhII antibodies, and bacterial shedding throughout the study period. The highest bacterial load measured by qPCR was recorded in a second-parity dam. This animal presented abnormal peripheral blood counts, which would be an indication of severe peripheral blood alterations in some infected cattle. This study suggests that young shedder cows are mostly seronegative in early stages of infection.

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“…The decrease in concentrations of progesterone and increase in estradiol in plasma before parturition in cows exposed to either elevated ambient temperatures or cooler temperatures indicate that maternal endocrine functions at parturition were not altered, although gestation was shortened when cows were exposed to elevated ambient temperatures. Stress increases concentrations of cortisol in plasma of cows (Christison and Johnson, 1972;Thun et al, 1998) and heifers (Szenci et al, 2011). Cortisol is secreted by the fetal adrenal gland and acts on the placenta to initiate a cascade of endocrine events that culminates with parturition (Smith et al, 1973;Wagner et al, 1974;Lye, 1996).…”

Section: Discussionmentioning

confidence: 99%

Effect of elevated ambient temperature at parturition on duration of gestation, ruminal temperature, and endocrine function of fall-calving beef cows1

Wright

Boehmer

Cooper-Prado

et al. 2014

Journal of Animal Science

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Fall-calving Angus cows were used to evaluate the effect of ambient temperature on duration of gestation. In Exp. 1, cows were AI and calved in August (n = 14) or October (n = 10). Cows grazed native prairie pasture in Oklahoma and had a BCS of 6.0 ± 0.5 (1 = emaciated, and 9 = obese) at parturition. Commencing 2 wk before the expected calving date, blood samples were taken from the coccygeal vein every 2 to 3 d until calving. Cows that calved in August tended to have shorter gestations (P = 0.07) compared with cows that calved in October. Maximum daily ambient temperature during the last 14 d of gestation was greater for August-calving cows (P < 0.001) compared with October cows. Concentrations of cortisol in plasma during the last 4 d of gestation were greater in cows that calved in August (P < 0.04) compared with cows that calved in October. In Exp. 2, cows were AI and calved in either mid-August (n = 7), late-August (n = 6), September (n = 6), or October (n = 8) to evaluate the effects of elevated ambient temperature on duration of gestation, ruminal temperature at parturition, and plasma cortisol, progesterone, and estradiol. Temperature boluses (SmartStock, LLC, Pawnee, OK) programmed to transmit temperature every hour were place in the rumen at 255 d of gestation. Cows grazed native prairie pasture in Oklahoma and had a BCS of 6.5 ± 0.4 at calving. Maximum ambient temperatures during d 263 to 273 of gestation were influenced by month of calving × day (P < 0.001). Duration of gestation was shorter for mid-August cows (P < 0.05) compared with October cows, but did not differ compared with late-August (P = 0.29) and September (P = 0.50) cows. Ruminal temperature during the 4 d before calving was not influenced by month of calving (P = 0.76). Ruminal temperature was decreased during the 24 h before parturition for cows in all months (P < 0.01) compared with 2 to 4 d before parturition. Concentrations of cortisol in plasma during d 271 to 276 of gestation were less (P < 0.05) for late-August compared with cows that calved during the other months. Concentrations of progesterone were greater during 7 d before parturition in October compared with cows that calved in September. Estradiol in plasma of cows during late gestation was not affected by month of calving (P = 0.76). Exposure of beef cows to elevated ambient temperature resulted in shorter gestations. Ruminal temperature in cows decreased ≥ 0.3°C the day before parturition.

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Effect of restraint stress on plasma concentrations of cortisol, progesterone and pregnancy associated-glycoprotein-1 in pregnant heifers during late embryonic development

Cited by 23 publications

References 28 publications

Effect of a brief stress on progesterone plasma levels in pregnant and non-pregnant guinea pigs

Effect of a brief stress on progesterone plasma levels in pregnant and non-pregnant guinea pigs

Coxiella burnetii total immunoglobulin G, phase I and phase II immunoglobulin G antibodies, and bacterial shedding in young dams in persistently infected dairy herds

Effect of elevated ambient temperature at parturition on duration of gestation, ruminal temperature, and endocrine function of fall-calving beef cows1

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