PlacentaPub Date : 2025-02-01DOI: 10.1016/j.placenta.2024.10.055
Pilar Van Mechelen , Amitesh Panda , Joris Vriens , Katrien De Clercq
{"title":"The role of calcium signals in trophoblast fusion","authors":"Pilar Van Mechelen , Amitesh Panda , Joris Vriens , Katrien De Clercq","doi":"10.1016/j.placenta.2024.10.055","DOIUrl":"10.1016/j.placenta.2024.10.055","url":null,"abstract":"","PeriodicalId":20203,"journal":{"name":"Placenta","volume":"160 ","pages":"Page 153"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Decidual macrophage efferocytosis of trophoblasts in full term human placenta","authors":"Kylie Belchamber , Katie Morris , Shakila Thangaratinum , Jennifer Tamblyn","doi":"10.1016/j.placenta.2024.10.051","DOIUrl":"10.1016/j.placenta.2024.10.051","url":null,"abstract":"","PeriodicalId":20203,"journal":{"name":"Placenta","volume":"160 ","pages":"Page 152"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of air pollutant sulfur dioxide exposure syncytialization and invasion processes in trophoblast cells: role of er stress","authors":"Sunil Singh , Swati Ajmeriya , Ruby Dhar , Subhradip Karmakar","doi":"10.1016/j.placenta.2024.10.039","DOIUrl":"10.1016/j.placenta.2024.10.039","url":null,"abstract":"","PeriodicalId":20203,"journal":{"name":"Placenta","volume":"160 ","pages":"Page 148"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
PlacentaPub Date : 2025-02-01DOI: 10.1016/j.placenta.2024.12.024
Ana Rita Pinheiro , Adriana Raquel Rodrigues , Liliana Matos , José Júlio Costa , Sara Ricardo , Luís Guedes-Martins , Henrique Almeida , Elisabete Silva
{"title":"Antioxidant treatment attenuates age-related placenta GLUT-1 and PLIN-2 downregulation","authors":"Ana Rita Pinheiro , Adriana Raquel Rodrigues , Liliana Matos , José Júlio Costa , Sara Ricardo , Luís Guedes-Martins , Henrique Almeida , Elisabete Silva","doi":"10.1016/j.placenta.2024.12.024","DOIUrl":"10.1016/j.placenta.2024.12.024","url":null,"abstract":"<div><h3>Background and aim</h3><div>Pregnancy after the age of 35 is correlated with an increased risk of impaired placentation and the development of pregnancy-associated complications. Changes in uterine redox balance seem to play a role in these settings. In this work, we hypothesized that local redox dysregulation impacts the placenta metabolic profile. Thus, we aimed to study the expression of enzymes/transporters related to nutrient uptake during reproductive aging and the effect of antioxidant supplementation.</div></div><div><h3>Methods</h3><div>Placenta samples were collected from pregnant women aged between 22 and 41 years, and from mice of different reproductive ages (8–12 and 38–42 weeks). A subgroup of 38–42 weeks-old mice was treated with apocynin (5 mM) in the drinking water. Real-time PCR was carried out to assess gene expression, and immunohistochemistry or western blotting to assess protein expression.</div></div><div><h3>Results</h3><div>A significant age-related decrease in the expression of glucose transporter type 1 (GLUT-1) was observed in both species. Regarding lipid metabolism, there was a strong negative and significant correlation between the gene expression of fatty-acid transporter type 4 and maternal age, in the human placenta. Perilipin isoform 2 (PLIN-2) decreased significantly with maternal age, in both models. Additionally, a significant age-related decrease in the gene expression of large neutral amino acid transporter type 4 with reproductive age was observed in the mice placenta. Supplementation with apocynin attenuated the observed alterations in GLUT-1 and PLIN-2. The observed changes suggest an age-related placenta metabolic dysfunction, likely associated with oxidative stress, that may negatively impact fetal and placental development.</div></div>","PeriodicalId":20203,"journal":{"name":"Placenta","volume":"160 ","pages":"Pages 60-66"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
PlacentaPub Date : 2025-02-01DOI: 10.1016/j.placenta.2024.12.028
Xinyi Sun , Jiayi Wan , Yi Zhang , Ye Shen , Yunhui Tang , Yongxiang Yin , Lawrence W. Chamley , Min Zhao , Qi Chen
{"title":"Placental extracellular vesicles induce ovarian tumour cell death in an ex vivo explant model: Possible therapeutic potential","authors":"Xinyi Sun , Jiayi Wan , Yi Zhang , Ye Shen , Yunhui Tang , Yongxiang Yin , Lawrence W. Chamley , Min Zhao , Qi Chen","doi":"10.1016/j.placenta.2024.12.028","DOIUrl":"10.1016/j.placenta.2024.12.028","url":null,"abstract":"<div><h3>Introduction</h3><div>Placental extracellular vesicles (EVs), lipid-enclosed particles released from the placenta, can facilitate intercellular communication and are classified as micro- or nano-EVs depending on size. Placental EVs contain molecules associated with cell proliferation and death. In this study, we investigated whether treating human ovarian tumour explants with placental EVs could induce ovarian tumour cell death.</div></div><div><h3>Methods</h3><div>Human ovarian tumours were collected. After directly treating human ovarian tumour explants with placental EVs, cellular necrosis was observed in ovarian tumour explants by HE stains. Cell death-associated miRNAs were measured.</div></div><div><h3>Results</h3><div>Expression of apoptosis and senescence-associated proteins, including NF-<span><math><mrow><mi>κ</mi><mi>β</mi></mrow></math></span> and <span><math><mrow><mi>γ</mi></mrow></math></span> H2AX, were significantly increased, while proliferation-associated proteins were significantly reduced in the explants after exposure to placental EVs. Furthermore, miRNA-519a-5p, miRNA-512–3p and miRNA-143–3p, which were reported to promote ovarian cancer cell apoptosis or inhibition of ovarian cancer cell growth, were significantly increased, and the target genes of miRNA-519a-5p and miRNA-512–3p were significantly reduced in the explants after exposure to placental EVs. Transfection of SK-OV-3 ovarian cancer cells with a mimic of miRNA-519a-5p or miRNA-143–3p reduced the viability of these cells.</div></div><div><h3>Discussion</h3><div>Our study demonstrated that placental EVs could induce necrosis in ovarian tumour explants. Increased levels of apoptosis and senescence-associated proteins and miRNAs could contribute to this change in ovarian tumour cell phenotype after exposure to placental EVs.</div></div>","PeriodicalId":20203,"journal":{"name":"Placenta","volume":"160 ","pages":"Pages 20-28"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142927593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}