PMID- 34953950 OWN - NLM STAT- MEDLINE DCOM- 20220118 LR - 20231213 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 296 DP - 2022 Mar 1 TI - Altered uterine angiogenesis in rats treated with a glyphosate-based herbicide. PG - 118729 LID - S0269-7491(21)02311-3 [pii] LID - 10.1016/j.envpol.2021.118729 [doi] AB - Glyphosate-based herbicides (GBHs) are the agrochemicals most used around the globe. However, they might have adverse effects on human and animal health. Previously, we showed that female rats neonatally exposed to GBHs exhibit altered expression of morphogenetic molecules and biomarkers of uterine development. We also observed a reduction in the size of implantation sites, altered expression of decidualization-related molecules, and increased post-implantation losses. Since decidualization comprises morphogenetic, biochemical and vascular changes, here we investigated the effects of neonatal GBH exposure on uterine angiogenesis in neonatal and pregnant rats. To achieve this, Wistar female rats were exposed to saline solution or GBH (2 mg glyphosate/kg-bw/day) on post-natal days (PND) 1, 3, 5 and 7. On PND8, uterine samples were collected for developmental studies. On PND90, the remaining females were mated and in the morning of gestational day (GD) 9, the implantation sites were collected. Angiogenesis-related molecules and cells involved in this process were identified and/or measured by immunohistochemistry or RT-PCR. On PND8, GBH-treated rats showed increased vascular endothelial growth factor (VEGF) expression and decreased Notch1, inducible nitric oxide synthase (iNOS) and Angiopoietin-2 (Ang2) mRNA levels. Vascular area, vessel diameter, endothelial cell proliferation, VEGF and Nestin protein expression, and VEGF, Notch1, iNOS and cyclooxygenase-2 (Cox-2) genes were downregulated in implantation sites of exposed females, while Ang2, VEGF receptor 1 and interleukin-10 (IL-10) were increased. Mast cells and macrophages were increased on PND8 and GD9 of treated rats. The increased Transforming growth factor-beta expression in the antimesometrial zone and IL-10 mRNA expression suggest that the M2 type is the predominant population of macrophages on implantation sites. In conclusion, neonatal GBH exposure alters the expression of angiogenesis-related molecules at neonatal uterine development and decidual reaction, suggesting altered vascular support. These alterations might contribute to the increased post-implantation losses observed in GBH-treated rats. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Ingaramo, Paola I AU - Ingaramo PI AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. Electronic address: paolaingar@gmail.com. FAU - Alarcon, Ramiro AU - Alarcon R AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. FAU - Caglieris, Maria L AU - Caglieris ML AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. FAU - Varayoud, Jorgelina AU - Varayoud J AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. FAU - Munoz-de-Toro, Monica AU - Munoz-de-Toro M AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. FAU - Luque, Enrique H AU - Luque EH AD - Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas, Santa Fe, Argentina. LA - eng PT - Journal Article DEP - 20211222 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Herbicides) RN - 0 (Vascular Endothelial Growth Factor A) RN - TE7660XO1C (Glycine) SB - IM MH - Animals MH - Female MH - Glycine/analogs & derivatives/toxicity MH - *Herbicides/toxicity MH - Pregnancy MH - Rats MH - Rats, Wistar MH - Vascular Endothelial Growth Factor A MH - Glyphosate OTO - NOTNLM OT - Agrochemical OT - Angiogenesis OT - Decidualization OT - Female fertility OT - Implantation sites OT - Uterus development EDAT- 2021/12/27 06:00 MHDA- 2022/01/19 06:00 CRDT- 2021/12/26 20:34 PHST- 2021/09/26 00:00 [received] PHST- 2021/12/02 00:00 [revised] PHST- 2021/12/20 00:00 [accepted] PHST- 2021/12/27 06:00 [pubmed] PHST- 2022/01/19 06:00 [medline] PHST- 2021/12/26 20:34 [entrez] AID - S0269-7491(21)02311-3 [pii] AID - 10.1016/j.envpol.2021.118729 [doi] PST - ppublish SO - Environ Pollut. 2022 Mar 1;296:118729. doi: 10.1016/j.envpol.2021.118729. Epub 2021 Dec 22.