Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog
In the dog, implantation takes place at approximately 17 days of embryonal life and, while exposed to relatively high circulating progesterone concentrations, embryos presence is required for the formation of decidua. Furthermore, a balance between pro- and anti-inflammatory responses in conceptus-m...
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ftdoajarticles:oai:doaj.org/article:09e9aed6476a4aaf8bc7b40e954cb83d 2023-05-15T15:50:55+02:00 Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog Miguel Tavares Pereira Renata Nowaczyk Rita Payan-Carreira Sonia Miranda Selim Aslan Duygu Kaya Mariusz P. Kowalewski 2021-02-01T00:00:00Z https://doi.org/10.3389/fvets.2020.625921 https://doaj.org/article/09e9aed6476a4aaf8bc7b40e954cb83d EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fvets.2020.625921/full https://doaj.org/toc/2297-1769 2297-1769 doi:10.3389/fvets.2020.625921 https://doaj.org/article/09e9aed6476a4aaf8bc7b40e954cb83d Frontiers in Veterinary Science, Vol 7 (2021) dog (Canis lupus familiaris) immune system uterus early pregnancy embryo-maternal communication Veterinary medicine SF600-1100 article 2021 ftdoajarticles https://doi.org/10.3389/fvets.2020.625921 2022-12-31T04:26:28Z In the dog, implantation takes place at approximately 17 days of embryonal life and, while exposed to relatively high circulating progesterone concentrations, embryos presence is required for the formation of decidua. Furthermore, a balance between pro- and anti-inflammatory responses in conceptus-maternal communication is crucial for the onset of pregnancy. Strikingly, the understanding of such immune mechanisms in canine reproduction is still elusive. Here, canine uterine samples from pre-implantation (day 10–12, E+) and corresponding non-pregnant controls (E–), implantation (day 17, Imp) and post-implantation (day 18–25, Post-Imp) stages of pregnancy were used to investigate the expression and localization of several immune-related factors. The most important findings indicate increased availability of CD4, MHCII, NCR1, IDO1, AIF1, CD25, CCR7, and IL6 in response to embryo presence (E+), while FoxP3 and CCL3 were more abundant in E– samples. Implantation was characterized by upregulated levels of FoxP3, IL12a, ENG, and CDH1, whereas CD4, CCR7, IL8, and -10 were less represented. Following implantation, decreased transcript levels of TNFR1, MHCII, NCR1, TLR4, CD206, FoxP3, and IL12a were observed concomitantly with the highest expression of IL6 and IL1β. MHCII, CD86, CD206, CD163, TNFα, IDO1, and AIF1 were immunolocalized in macrophages, CD4 and Nkp46 in lymphocytes, and some signals of IDO1, AIF1, and TNF-receptors could also be identified in endothelial cells and/or uterine glands. Cumulatively, new insights regarding uterine immunity in the peri-implantation period are provided, with apparent moderated pro-inflammatory signals prevailing during pre-implantation, while implantation and early trophoblast invasion appear to be associated with immunomodulatory and rather anti-inflammatory conditions. Article in Journal/Newspaper Canis lupus Directory of Open Access Journals: DOAJ Articles Frontiers in Veterinary Science 7 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
dog (Canis lupus familiaris) immune system uterus early pregnancy embryo-maternal communication Veterinary medicine SF600-1100 |
spellingShingle |
dog (Canis lupus familiaris) immune system uterus early pregnancy embryo-maternal communication Veterinary medicine SF600-1100 Miguel Tavares Pereira Renata Nowaczyk Rita Payan-Carreira Sonia Miranda Selim Aslan Duygu Kaya Mariusz P. Kowalewski Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
topic_facet |
dog (Canis lupus familiaris) immune system uterus early pregnancy embryo-maternal communication Veterinary medicine SF600-1100 |
description |
In the dog, implantation takes place at approximately 17 days of embryonal life and, while exposed to relatively high circulating progesterone concentrations, embryos presence is required for the formation of decidua. Furthermore, a balance between pro- and anti-inflammatory responses in conceptus-maternal communication is crucial for the onset of pregnancy. Strikingly, the understanding of such immune mechanisms in canine reproduction is still elusive. Here, canine uterine samples from pre-implantation (day 10–12, E+) and corresponding non-pregnant controls (E–), implantation (day 17, Imp) and post-implantation (day 18–25, Post-Imp) stages of pregnancy were used to investigate the expression and localization of several immune-related factors. The most important findings indicate increased availability of CD4, MHCII, NCR1, IDO1, AIF1, CD25, CCR7, and IL6 in response to embryo presence (E+), while FoxP3 and CCL3 were more abundant in E– samples. Implantation was characterized by upregulated levels of FoxP3, IL12a, ENG, and CDH1, whereas CD4, CCR7, IL8, and -10 were less represented. Following implantation, decreased transcript levels of TNFR1, MHCII, NCR1, TLR4, CD206, FoxP3, and IL12a were observed concomitantly with the highest expression of IL6 and IL1β. MHCII, CD86, CD206, CD163, TNFα, IDO1, and AIF1 were immunolocalized in macrophages, CD4 and Nkp46 in lymphocytes, and some signals of IDO1, AIF1, and TNF-receptors could also be identified in endothelial cells and/or uterine glands. Cumulatively, new insights regarding uterine immunity in the peri-implantation period are provided, with apparent moderated pro-inflammatory signals prevailing during pre-implantation, while implantation and early trophoblast invasion appear to be associated with immunomodulatory and rather anti-inflammatory conditions. |
format |
Article in Journal/Newspaper |
author |
Miguel Tavares Pereira Renata Nowaczyk Rita Payan-Carreira Sonia Miranda Selim Aslan Duygu Kaya Mariusz P. Kowalewski |
author_facet |
Miguel Tavares Pereira Renata Nowaczyk Rita Payan-Carreira Sonia Miranda Selim Aslan Duygu Kaya Mariusz P. Kowalewski |
author_sort |
Miguel Tavares Pereira |
title |
Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
title_short |
Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
title_full |
Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
title_fullStr |
Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
title_full_unstemmed |
Selected Uterine Immune Events Associated With the Establishment of Pregnancy in the Dog |
title_sort |
selected uterine immune events associated with the establishment of pregnancy in the dog |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fvets.2020.625921 https://doaj.org/article/09e9aed6476a4aaf8bc7b40e954cb83d |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Frontiers in Veterinary Science, Vol 7 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fvets.2020.625921/full https://doaj.org/toc/2297-1769 2297-1769 doi:10.3389/fvets.2020.625921 https://doaj.org/article/09e9aed6476a4aaf8bc7b40e954cb83d |
op_doi |
https://doi.org/10.3389/fvets.2020.625921 |
container_title |
Frontiers in Veterinary Science |
container_volume |
7 |
_version_ |
1766385943009296384 |