Pigs

Anderson, Lloyd L.

doi:10.1002/9781119265306.ch13

Cited by 8 publications

(9 citation statements)

References 22 publications

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“…Gilts and sows are spontaneously ovulating, polyestrous, litter-bearing pigs that reach puberty between 4 and 9 months of age and have recurring estrous cycles of 18-21 days throughout the year (see Anderson 1993 ). Behavioral estrus lasts for 24-72 h and ovulation occurs 36-42 h after onset of estrus.…”

Section: The Estrous Cycle and Luteolysismentioning

confidence: 99%

History of Maternal Recognition of Pregnancy

Bazer

2015

Regulation of Implantation and Establishment of Pregnancy in Mammals

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The mechanism for signaling pregnancy recognition is highly variable among species, and the signaling molecule itself varies between estrogens in pigs to chorionic gonadotrophin in primates. This chapter provides insight into the menstrual cycle of women and estrous cycles of rodents, dog, cat, pigs, sheep, rabbits, and marsupials, as well as the hormones required for pregnancy recognition. Pregnancy recognition involves specific hormones such as prolactin in rodents or interferons in ruminants and estrogens in pigs that in their own way ensure the maintenance of the corpus luteum and its secretion of progesterone which is the hormone of pregnancy. However, these pregnancy recognition signals may also modify gene expression in a cell-specific and temporal manner to ensure the growth and development of the conceptus. This chapter provides some historical aspects of the development of understanding of mechanisms for the establishment and maintenance of pregnancy in several species of mammals.

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Section: The Estrous Cycle and Luteolysismentioning

confidence: 99%

History of Maternal Recognition of Pregnancy

Bazer

2015

Regulation of Implantation and Establishment of Pregnancy in Mammals

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“…On the other hand, other research teams reported a statistical lack of change in LH secretion between the mentioned physiological periods [ 5 , 6 ]. There are no reliable data on the concentrations of circulating FSH in gilts during the peri-implantation period, but many authors conclude its basal concentration [ 7 , 8 , 9 ], which would also be associated with a lack of change in the secretion of this hormone relative to the mid-luteal phase of the estrous cycle [ 10 , 11 ]. Despite the lack of data on changes in circulating ACTH concentrations in gilts at the early stage of gestation compared to the estrous cycle, the worth noting is a reduction in circulating ACTH levels in the corresponding stages observed in women and rats [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptation of the Porcine Pituitary Transcriptome, Spliceosome and Editome during Early Pregnancy

Makowczenko

Jastrzebski

Kieżun

et al. 2023

IJMS

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The physiological mechanisms of the porcine reproduction are relatively well-known. However, transcriptomic changes and the mechanisms accompanying transcription and translation processes in various reproductive organs, as well as their dependence on hormonal status, are still poorly understood. The aim of this study was to gain a principal understanding of alterations within the transcriptome, spliceosome and editome occurring in the pituitary of the domestic pig (Sus scrofa domestica L.), which controls basic physiological processes in the reproductive system. In this investigation, we performed extensive analyses of data obtained by high-throughput sequencing of RNA from the gilts’ pituitary anterior lobes during embryo implantation and the mid-luteal phase of the estrous cycle. During analyses, we obtained detailed information on expression changes of 147 genes and 43 long noncoding RNAs, observed 784 alternative splicing events and also found the occurrence of 8729 allele-specific expression sites and 122 RNA editing events. The expression profiles of the selected 16 phenomena were confirmed by PCR or qPCR techniques. As a final result of functional meta-analysis, we acquired knowledge regarding intracellular pathways that induce changes in the processes accompanying transcription and translation regulation, which may induce modifications in the secretory activity of the porcine adenohypophyseal cells.

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“…The blastocyst will hatch from the zona pellucida when it reaches approximately 150 cells or more (Anderson, 2000). The developing embryos migrate throughout the uterine horns until trophoblastic elongation occurs around d 11-12 of gestation.…”

Section: Early Embryo Development and Uterine Migration In The Pigmentioning

confidence: 99%

MicroRNA expression and function during porcine oocyte maturation and early embryonic development

Wright

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Pigs

Cited by 8 publications

References 22 publications

History of Maternal Recognition of Pregnancy

History of Maternal Recognition of Pregnancy

Adaptation of the Porcine Pituitary Transcriptome, Spliceosome and Editome during Early Pregnancy

MicroRNA expression and function during porcine oocyte maturation and early embryonic development

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