Results 21 to 30 of about 110,074 (303)

Individual Variation in Parturition Timing within and among Years for a Bat Maternity Colony

Frontiers in Bioscience-Scholar, 2023
Background: In monoestrous species, the timing of reproduction can have important impacts on offspring survival. For heterotherms in temperate areas, parturition timing is constrained by cold weather survival strategies, such as hibernation and torpor ...
Julia Sunga, Jessica Humber, Hugh Broders   +2 more
doaj   +1 more source

Effects of Lateral Hypothalamic Lesions on Placentophagia in Virgin, Primiparous, and Multiparous Rats [PDF]

, 1973
Lesions of the lateral hypothalamus (LH) were produced in pregnant and nonpregnant female rats through chronically implanted electrodes to investigate the effect of LH damage on placentophagia.
Kristal, Dr. Mark B.
core   +1 more source

Differences in hormone levels around parturition in Hanwoo cattle (Bos taurus coreanae) following artificial insemination and embryo transfer

Veterinary Medicine and Science, 2022
Background With unique genetic traits, Hanwoo cattle (Bos taurus coreanae) are well‐adapted to the Korean environment. However, their perinatal mortality rate is 2%–3%, which imposes an economic burden.
Junkoo Yi, Soo‐Young Yum, Daehyun Kim, Sera Han, Jaejung Ha, Jisu Kim, Daejin Jung, Goo Jang, Wonyou Lee, Joonho Moon   +9 more
doaj   +1 more source

Impaired placentomal interferon signaling as the possible cause of retained fetal membrane in parturition-induced cows

The Journal of Reproduction and Development, 2021
Although hormonal induction of parturition in cattle results in the successful delivery of healthy calves, the risk of retained fetal membrane is significantly increased. In a previous study, a combination of the long-acting glucocorticoid, triamcinolone
Ryo INABA, Ryouka KAWAHARA-MIKI, Akihisa SHINOZAWA, Taichi YASUHARA, Takashi FUJII, Keisuke KOYAMA, Michiko MURATA-OKUBO, Kousaku SOUMA, Hiroki HIRAYAMA   +8 more
doaj   +1 more source

Evaluation of L-selectin expression and assessment of protein tyrosine phosphorylation in bovine polymorphonuclear neutrophil leukocytes around parturition. [PDF]

, 2002
Impaired polymorphonuclear neutrophil leukocyte (PMN) function around parturition has been associated with increased clinical mastitis in dairy cows. Rolling and attachment of PMN to the endothelium is the first step in the recruitment process and is ...
Burvenich, Christian, Capuco, Anthony, HUSHEEM, Michael, Monfardini, Erica, Paape, Max, WANG, Yan, WOOD, Larry   +6 more
core   +1 more source

Changes in the Th1 : Th2 Cytokine Bias in Pregnancy and the Effects of the Anti-Inflammatory Cyclopentenone Prostaglandin 15-Deoxy-Δ12,14-Prostaglandin J2

Mediators of Inflammation, 2012
Pregnancy is a complex immunological state in which a bias towards T helper 2 (Th2) protects the fetus. Evidence suggests that proinflammatory cytokines increase the risk of poor neonatal outcome, independently of the direct effect of preterm labour. The
Lynne Sykes, David A. MacIntyre, Xiao J. Yap, Sathana Ponnampalam, Tiong Ghee Teoh, Phillip R. Bennett   +5 more
doaj   +1 more source

Identification of a Feed-Forward Loop Between 15(S)-HETE and PGE2 in Human Amnion at Parturition

Journal of Lipid Research, 2022
Human parturition is associated with massive arachidonic acid (AA) mobilization in the amnion, indicating that large amounts of AA-derived eicosanoids are required for parturition. Prostaglandin E2 (PGE2) synthesized from the cyclooxygenase (COX) pathway
Fan Zhang, Kang Sun, Wang-Sheng Wang
doaj   +1 more source

The Th1:Th2 Dichotomy of Pregnancy and Preterm Labour

Mediators of Inflammation, 2012
Pregnancy is a unique immunological state in which a balance of immune tolerance and suppression is needed to protect the fetus without compromising the mother.
Lynne Sykes, David A. MacIntyre, Xiao J. Yap, Tiong Ghee Teoh, Phillip R. Bennett   +4 more
doaj   +1 more source

Alternative farrowing systems: design criteria for farrowing systems based on the biological needs of sows and piglets [PDF]

, 2010
The construction of a suitable farrowing environment is a continuing dilemma: the piglet's needs must be matched with those of the sow and the farmer during the main phases that constitute farrowing: nest building, parturition and lactation. Difficulties
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core   +1 more source

NFκB and AP-1 Drive Human Myometrial IL8 Expression

Mediators of Inflammation, 2012
The uterine expression of the chemokine IL8 increases dramatically with the onset of labour both at term and preterm. The IL8 promoter contains binding sites for the transcription factors nuclear factor-kappa B (NFκB), activator protein-1 (AP-1), and ...
Shirin Khanjani, Vasso Terzidou, Mark R. Johnson, Phillip R. Bennett   +3 more
doaj   +1 more source