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Developing a theoretical evolutionary framework to solve the mystery of parturition initiation

Antonis Rokas, Sam Mesiano, Ortal Tamam, Abigail LaBella, Ge Zhang, Louis Muglia

eLife. 2020; 9: e58343. Published online 2020 Dec 31. doi: 10.7554/eLife.58343

PMCID:: PMC7775106

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Novel concepts on pregnancy clocks and alarms: redundancy and synergy in human parturition

Ramkumar Menon, Elizabeth A. Bonney, Jennifer Condon, Sam Mesiano, Robert N. Taylor

Hum Reprod Update. 2016 Sep; 22(5): 535–560. Published online 2016 Jun 30. doi: 10.1093/humupd/dmw022

PMCID:: PMC5001499

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Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival

Maegwin Bonar, E. Hance Ellington, Keith P. Lewis, Eric Vander Wal

PLoS One. 2018; 13(2): e0192204. Published online 2018 Feb 21. doi: 10.1371/journal.pone.0192204

PMCID:: PMC5821316

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The role of selection and evolution in changing parturition date in a red deer population

Timothée Bonnet, Michael B. Morrissey, Alison Morris, Sean Morris, Tim H. Clutton-Brock, Josephine M. Pemberton, Loeske E. B. Kruuk

PLoS Biol. 2019 Nov; 17(11): e3000493. Published online 2019 Nov 5. doi: 10.1371/journal.pbio.3000493

PMCID:: PMC6830748

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Functional Hierarchy of Uterotonics Required for Successful Parturition in Mice

Masahide Yoshida, Yuki Takayanagi, Azusa Ichino-Yamashita, Kei Sato, Yukihiko Sugimoto, Tadashi Kimura, Katsuhiko Nishimori

Endocrinology. 2019 Dec; 160(12): 2800–2810. Published online 2019 Sep 13. doi: 10.1210/en.2019-00499

PMCID:: PMC6887699

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Defining “Normal” in Pig Parturition

Alexandra Walls, Bianca Hatze, Sabrina Lomax, Roslyn Bathgate

Animals (Basel) 2022 Oct; 12(20): 2754. Published online 2022 Oct 13. doi: 10.3390/ani12202754

PMCID:: PMC9597809

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Evaluating movement-based methods for estimating the frequency and timing of parturition in mule deer

Tabitha A. Hughes, Randy T. Larsen, Kent R. Hersey, Madelon van de Kerk, Brock R. McMillan

Mov Ecol. 2024; 12: 6. Published online 2024 Jan 19. doi: 10.1186/s40462-024-00450-4

PMCID:: PMC10799437

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Parturition in Mammals: Animal Models, Pain and Distress

Julio Martínez-Burnes, Ramon Muns, Hugo Barrios-García, Dina Villanueva-García, Adriana Domínguez-Oliva, Daniel Mota-Rojas

Animals (Basel) 2021 Oct; 11(10): 2960. Published online 2021 Oct 14. doi: 10.3390/ani11102960

PMCID:: PMC8532935

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Prepartum change in ventral tail base surface temperature in beef cattle: comparison with vaginal temperature and behavior indices, and effect of ambient temperature

Masafumi MIWA, Shuichi MATSUYAMA, Sho NAKAMURA, Kohei NODA, Miki SAKATANI

J Reprod Dev. 2019 Dec; 65(6): 515–525. Published online 2019 Oct 6. doi: 10.1262/jrd.2019-087

PMCID:: PMC6923149

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

Ryo INABA, Ryouka KAWAHARA-MIKI, Akihisa SHINOZAWA, Taichi YASUHARA, Takashi FUJII, Keisuke KOYAMA, Michiko MURATA-OKUBO, Kousaku SOUMA, Hiroki HIRAYAMA

J Reprod Dev. 2022 Feb; 68(1): 30–37. Published online 2021 Oct 31. doi: 10.1262/jrd.2021-094

PMCID:: PMC8872748

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Myometrial Transcriptional Signatures of Human Parturition

Zachary Stanfield, Pei F. Lai, Kaiyu Lei, Mark R. Johnson, Andrew M. Blanks, Roberto Romero, Mark R. Chance, Sam Mesiano, Mehmet Koyutürk

Front Genet. 2019; 10: 185. Published online 2019 Apr 1. doi: 10.3389/fgene.2019.00185

Correction in:: Front Genet. 2019; 10: 515.

PMCID:: PMC6452569

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

Fan Zhang, Kang Sun, Wang-Sheng Wang

J Lipid Res. 2022 Nov; 63(11): 100294. Published online 2022 Oct 4. doi: 10.1016/j.jlr.2022.100294

PMCID:: PMC9646666

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Genetic effects on the timing of parturition and links to fetal birth weight

Pol Solé-Navais, Christopher Flatley, Valgerdur Steinthorsdottir, Marc Vaudel, Julius Juodakis, Jing Chen, Triin Laisk, Abigail L. LaBella, David Westergaard, Jonas Bacelis, Ben Brumpton, Line Skotte, Maria C. Borges, Øyvind Helgeland, Anubha Mahajan, Matthias Wielscher, Frederick Lin, Catherine Briggs, Carol A. Wang, Gunn-Helen Moen, Robin N. Beaumont, Jonathan P. Bradfield, Abin Abraham, Gudmar Thorleifsson, Maiken E. Gabrielsen, Sisse R. Ostrowski, Dominika Modzelewska, Ellen A. Nohr, Elina Hypponen, Amit Srivastava, Octavious Talbot, Catherine Allard, Scott M. Williams, Ramkumar Menon, Beverley M. Shields, Gardar Sveinbjornsson, Huan Xu, Mads Melbye, William Lowe, Jr, Luigi Bouchard, Emily Oken, Ole B. Pedersen, Daniel F. Gudbjartsson, Christian Erikstrup, Erik Sørensen, Early Growth Genetics Consortium, Estonian Biobank Research Team, Danish Blood Donor Study Genomic Consortium, Rolv T. Lie, Kari Teramo, Mikko Hallman, Thorhildur Juliusdottir, Hakon Hakonarson, Henrik Ullum, Andrew T. Hattersley, Line Sletner, Mario Merialdi, Sheryl L. Rifas-Shiman, Thora Steingrimsdottir, Denise Scholtens, Christine Power, Jane West, Mette Nyegaard, John A. Capra, Anne H. Skogholt, Per Magnus, Ole A. Andreassen, Unnur Thorsteinsdottir, Struan F. A. Grant, Elisabeth Qvigstad, Craig E. Pennell, Marie-France Hivert, Geoffrey M. Hayes, Marjo-Riitta Jarvelin, Mark I. McCarthy, Deborah A. Lawlor, Henriette S. Nielsen, Reedik Mägi, Antonis Rokas, Kristian Hveem, Kari Stefansson, Bjarke Feenstra, Pål Njolstad, Louis J. Muglia, Rachel M. Freathy, Stefan Johansson, Ge Zhang, Bo Jacobsson

Nat Genet. 2023; 55(4): 559–567. Published online 2023 Apr 3. doi: 10.1038/s41588-023-01343-9

Correction in:: Nat Genet. 2023; 55(7): 1250.

PMCID:: PMC10101852

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Canine Neonatal Assessment by Vitality Score, Amniotic Fluid, Urine, and Umbilical Cord Blood Analysis of Glucose, Lactate, and Cortisol: Possible Influence of Parturition Type?

Tanja Plavec, Tanja Knific, Aleksandra Slapšak, Sara Raspor, Barbara Lukanc, Maja Zakošek Pipan

Animals (Basel) 2022 May; 12(10): 1247. Published online 2022 May 12. doi: 10.3390/ani12101247

PMCID:: PMC9137714

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Modeling hormonal and inflammatory contributions to preterm and term labor using uterine temporal transcriptomics

Roberta Migale, David A. MacIntyre, Stefano Cacciatore, Yun S. Lee, Henrik Hagberg, Bronwen R. Herbert, Mark R. Johnson, Donald Peebles, Simon N. Waddington, Phillip R. Bennett

BMC Med. 2016; 14: 86. Published online 2016 Jun 13. doi: 10.1186/s12916-016-0632-4

PMCID:: PMC4904357

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Effects of intravenous butaphosphan and cyanocobalamin to late pregnant ewes on the metabolic indices around parturition and weight gain of their lambs after birth

Azizollah Mohammadi Barimanloo, Aliasghar Chalmeh, Mehrdad Pourjafar, Abdolah Mirzaei

Vet Med Sci. 2022 Mar; 8(2): 781–791. Published online 2021 Dec 13. doi: 10.1002/vms3.687

PMCID:: PMC8959294

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Supplementing Merino ewes with melatonin during the last half of pregnancy improves tolerance of prolonged parturition and survival of second-born twin lambs

Tom Flinn, Niki L McCarthy, Alyce M Swinbourne, Kathryn L Gatford, Alice C Weaver, Hayley A McGrice, Jennifer M Kelly, Simon K Walker, Karen L Kind, David O Kleemann, William H E J van Wettere

J Anim Sci. 2020 Dec; 98(12): skaa372. Published online 2020 Nov 17. doi: 10.1093/jas/skaa372

PMCID:: PMC7769222

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TDAG51 is a crucial regulator of maternal care and depressive-like behavior after parturition

Hyeongseok Yun, Eui-Soon Park, Seunga Choi, Bongjin Shin, Jungeun Yu, Jiyeon Yu, Dulshara Sachini Amarasekara, Sumi Kim, Nari Lee, Jong-Soon Choi, Yongwon Choi, Jaerang Rho

PLoS Genet. 2019 Jun; 15(6): e1008214. Published online 2019 Jun 28. doi: 10.1371/journal.pgen.1008214

PMCID:: PMC6599150

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Parturition dysfunction in obesity: time to target the pathobiology

Nicole S. Carlson, Teri L. Hernandez, K. Joseph Hurt

Reprod Biol Endocrinol. 2015; 13: 135. Published online 2015 Dec 18. doi: 10.1186/s12958-015-0129-6

PMCID:: PMC4683915

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Usefulness of Maternal and Fetal Parameters for the Prediction of Parturition Date in Dogs

Giulia Siena, Chiara Milani

Animals (Basel) 2021 Mar; 11(3): 878. Published online 2021 Mar 19. doi: 10.3390/ani11030878

PMCID:: PMC8003403

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PMC Images search for parturition ( birth )

Figure 4.Testable theoretical models for determining the onset of parturition in eutherian mammals.

Model one represents a fixed clock in the mother or fetus to determine when birth happens (y = 0). The precise day is determined by a physiological rate constant (r) that determines when, for a given woman, birth would occur. The time (t) is measured in months in this representation. Model two reflects a parturition inhibition signal (S_i) that must go below a threshold (th₀) for birth (B) to occur. Model three alternatively proposes a parturition stimulation signal (S_p) that must exceed a threshold for birth to occur. Model four displays that both S_i and S_p are involved in determining the timing for birth, and parturition occurs as a crossover when S_p >S_i.

Developing a theoretical evolutionary framework to solve the mystery of parturition initiation

eLife. 2020;9:e58343.
Figure 5

Organizational chart demonstrating the study patients who underwent pelvic CT, vaginal birth data, and parturition pit grading.

Parturition Pit: The Bony Imprint of Vaginal Birth

Skeletal Radiol. ;45(9):1263-1267.
Figure 2

Activity of GSH-Px in colostrum and milk of sows after parturition. Groups of animals: (A) - sows giving birth for 1^sttime, (B) - sows giving birth for 2^nd-3^rdtime, (C) - sows giving birth for 4^th-5^thtime, (D) - sows giving birth for 6-8 times. GSH-Tr - Glutathione Transferase - mean - pkat/mg protein, GSH-Px - Glutathione Peroxidase - mean - nkat/mg protein, SOD - Superoxide Dismutase - mean - SOD units/mg protein, Vitamin C - mean - μmol/g protein, Vitamin A - mean - μg/g of protein. Time 0 - sample collected immediately after parturition, Time 6 h - sample collected 6 h after parturition, Time 12 h - sample collected 12 h after parturition, Time 18 h - sample collected 18 h after parturition, Time 36 - sample collected 36 h after parturition, Time 72 - sample collected 72 h after parturition Statistical significance describes the effect of time on antioxidative profile in colostrum and milk of sows during early postpartum period.

Antioxidant defence of colostrum and milk in consecutive lactations in sows

Ir Vet J. 2012;65(1):4-4.
Figure 1

Activity of GSH-Tr in colostrum and milk of sows after parturition. Groups of animals: (A) - sows giving birth for 1^sttime, (B) - sows giving birth for 2^nd-3^rdtime, (C) - sows giving birth for 4^th-5^thtime, (D) - sows giving birth for 6-8 times. GSH-Tr - Glutathione Transferase - mean - pkat/mg protein, GSH-Px - Glutathione Peroxidase - mean - nkat/mg protein, SOD - Superoxide Dismutase - mean - SOD units/mg protein, Vitamin C - mean - μmol/g protein, Vitamin A - mean - μg/g of protein. Time 0 - sample collected immediately after parturition, Time 6 h - sample collected 6 h after parturition, Time 12 h - sample collected 12 h after parturition, Time 18 h - sample collected 18 h after parturition, Time 36 - sample collected 36 h after parturition, Time 72 - sample collected 72 h after parturition Statistical significance describes the effect of time on antioxidative profile in colostrum and milk of sows during early postpartum period.

Antioxidant defence of colostrum and milk in consecutive lactations in sows

Ir Vet J. 2012;65(1):4-4.