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Guerrero-Arroyo J, Jiménez-Córdova MI, Aztatzi-Aguilar OG, Del Razo LM. Impact of Fluoride Exposure on Rat Placenta: Foetal/Placental Morphometric Alterations and Decreased Placental Vascular Density. Biol Trace Elem Res 2024; 202:3237-3247. [PMID: 37882978 DOI: 10.1007/s12011-023-03916-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 10/09/2023] [Indexed: 10/27/2023]
Abstract
Inorganic fluoride is a geogenic and anthropogenic contaminant widely distributed in the environment and commonly identified in contaminated groundwater. There is limited information on the effect of fluoride exposure on pregnancy. The aim of this study was to evaluate possible placental alterations of fluoride exposure in a rat model simulating preconception and pregnancy exposure conditions in endemic areas. Fluoride exposure was administered orally to foetuses of dams exposed to 2.5 and 5 mg fluoride/kg/d. Foetal weight, height, foetal/placental weight ratio, placental zone thickness, levels of malondialdehyde (MDA) and vascular endothelial growth factor-A (VEGF-A) and vascular density in placental tissue were evaluated. The results showed a nonlinear relationship between these outcomes and the dose of fluoride exposure. In addition, a significant increase in the fluoride concentration in placental tissue was observed. The group that was exposed to 2.5 mg fluoride/kg/d had a greater increase in both MDA levels and VEGF-A levels than the higher dose group. A significant increase in the thickness of the placental zones and a decrease in the vascular density of the labyrinth zone area were also observed in the fluoride-exposed groups. In conclusion, the data obtained demonstrate that fluoride exposure results in morpho-structural alterations in the placenta and that non-monotonic changes in MDA, VEGF-A levels and placental foetal weight ratio were at environmentally relevant concentrations.
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Affiliation(s)
- Jonathan Guerrero-Arroyo
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360, México City, México
| | - Mónica I Jiménez-Córdova
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360, México City, México
| | - Octavio G Aztatzi-Aguilar
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360, México City, México
| | - Luz M Del Razo
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 07360, México City, México.
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Williams A, Saizy S, Mendola P, Grobman W, Subramaniam A, Stevens DR, Mumford SL, Larson K, Chen Z, Messer LC, Duncan V, Faye-Petersen O, Kumar R. Prenatal exposure to perceived stress, maternal asthma, and placental size. Placenta 2023; 139:127-133. [PMID: 37390516 PMCID: PMC10529282 DOI: 10.1016/j.placenta.2023.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/02/2023]
Abstract
INTRODUCTION Prenatal exposure to stress has been associated with poor pregnancy outcomes, yet evidence linking stress and placental size is limited. Asthma is associated with worse pregnancy outcomes and women with asthma may be more susceptible to stress. Using the asthma-enriched B-WELL-Mom cohort, we examined the association between perceived stress and placental size. METHODS Placental measures of weight, length, width, and thickness were available for 345 women (262 with asthma) via placental pathology report. Perceived Stress Scale (PSS) scores were obtained in each trimester of pregnancy and categorized into quartiles (low quartile as reference). For associations between PSS and placental size, generalized estimating equations adjusted for maternal and infant factors were used to estimate regression coefficients (β) and 95% confidence intervals (95% CI). Full models and models stratified by asthma status were run. RESULTS Compared to Quartile 1, high levels of stress (Quartile 4) were associated with smaller placental weight (-20.63 95% CI: -37.01,-4.26) and length (-0.55 95% CI: -0.96,-0.15), but not width or thickness. Results by asthma status show a stronger association between perceived stress and shorter placental length in those with asthma and a stronger association between perceived stress and smaller placental thickness in those without asthma. Findings were robust to sensitivity analyses DISCUSSION: Higher levels of perceived stress were associated with smaller placental size. Additional research is warranted to understand the relationship between stress and placental size.
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Affiliation(s)
- Andrew Williams
- Public Health Program, Department of Population Health, School of Medicine and Health Sciences, University of North Dakota, 1301 N Columbia Rd, Grand Forks, ND, 58202, USA.
| | - Sadia Saizy
- Public Health Program, Department of Population Health, School of Medicine and Health Sciences, University of North Dakota, 1301 N Columbia Rd, Grand Forks, ND, 58202, USA
| | - Pauline Mendola
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, 270 Farber Hall, Buffalo, NY, 14214, USA
| | - William Grobman
- College of Medicine, The Ohio State University, 370 W 9th Ave, Columbus, OH, 43210, USA
| | - Akila Subramaniam
- University of Alabama at Birmingham, Heersink School of Medicine, 1670 University Blvd, Birmingham, AL, 35233, USA
| | - Danielle R Stevens
- Epidemiology Branch, National Institute of Environmental Health Sciences, PO Box 12233, Mail Drop A3-05, Durham, NC, 27709, USA
| | - Sunni L Mumford
- Department of Biostatistics, Epidemiology & Informatics, Perelman School of Medicine, University of Pennsylvania, 423 Guardian Drive, Philadelphia, PA, 19104-6021, USA
| | - Kate Larson
- USDA Agricultural Research Service, Grand Forks Human Nutrition Research Center, United States Department of Agriculture, 2420 2nd Ave N, Grand Forks, ND, 58203, USA
| | - Zhen Chen
- Division of Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, Bethesda, MD, 20892, USA
| | - Lynne C Messer
- OHSU-PSU School of Public Health, 1805 SW 4th Ave, Portland, OR, 97201, USA
| | - Virginia Duncan
- University of Alabama at Birmingham, Heersink School of Medicine, 1670 University Blvd, Birmingham, AL, 35233, USA
| | - Ona Faye-Petersen
- University of Alabama at Birmingham, Heersink School of Medicine, 1670 University Blvd, Birmingham, AL, 35233, USA
| | - Rajesh Kumar
- Lurie Children's Hospital, Feinberg School of Medicine, Northwestern University, 420 E Superior St, Chicago, IL, 60611, USA
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Dancey SR, Benton SJ, Lafreniere AJ, Leckie M, McLeod B, Sim J, El-Demellawy D, Grynspan D, Bainbridge SA. Synoptic Reporting in Clinical Placental Pathology: A Preliminary Investigation Into Report Findings and Interobserver Agreement. Pediatr Dev Pathol 2023; 26:333-344. [PMID: 37082923 PMCID: PMC10559645 DOI: 10.1177/10935266231164446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
INTRODUCTION Placental pathology is key for investigating adverse pregnancy outcomes, however, lack of standardization in reporting has limited clinical utility. We evaluated a novel placental pathology synoptic report, comparing its robustness to narrative reports, and assessed interobserver agreement. METHODS 100 singleton placentas were included. Histology slides were examined by 2 senior perinatal pathologists and 2 pathology residents using a synoptic report (32 lesions). Historical narrative reports were compared to synoptic reports. Kappa scores were calculated for interobserver agreement between senior, resident, and senior vs resident pathologists. RESULTS Synoptic reporting detected 169 (51.4%) lesion instances initially not included in historical reports. Amongst senior pathologists, 64% of all lesions examined demonstrated fair-to-excellent agreement (Kappa ≥0.41), with only 26% of Kappas ≥0.41 amongst those examined by resident pathologists. Well-characterized lesions (e.g., chorioamnionitis) demonstrated higher agreement, with lower agreement for uncommon lesions and those previously shown to have poor consensus. DISCUSSION Synoptic reporting is one proposed method to address issues in placenta pathology reporting. The synoptic report generally identifies more lesions compared to the narrative report, however clinical significance remains unclear. Interobserver agreement is likely related to differential in experience. Further efforts to improve overall standardization of placenta pathology reporting are needed.
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Affiliation(s)
- Sonia R. Dancey
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Samantha J. Benton
- Department of Health Sciences, Faculty of Science, Carleton University, Ottawa, ON, Canada
| | | | - Michal Leckie
- Department of Pathology, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Benjamin McLeod
- Department of Pathology, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Jordan Sim
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital, Ottawa, ON, Canada
| | - Dina El-Demellawy
- Department of Pathology, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - David Grynspan
- Department of Pathology and Laboratory Medicine, Vernon Jubilee Hospital, Vernon, BC, Canada
| | - Shannon A. Bainbridge
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
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Shmueli A, Mor L, Blickstein O, Sela R, Weiner E, Gonen N, Schreiber L, Levy M. Placental pathology in pregnancies with late fetal growth restriction and abnormal cerebroplacental ratio. Placenta 2023; 138:83-87. [PMID: 37224646 DOI: 10.1016/j.placenta.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/25/2023] [Accepted: 05/17/2023] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Late fetal growth restriction (FGR) is associated with mild growth restriction and normal or mild abnormal doppler flows. The cerebroplacental ratio (CPR) has been demonstrated as more sensitive to hypoxia than its individual components in these fetuses. We hypothesized that abnormal CPR in late FGR is reflected in specific placental vascular malperfusion lesions. METHODS Retrospective cohort study of late FGR newborns between 2012 and 2022 in a tertiary hospital. Overall, 361 cases were included: 104 with pathological CPR (study group), and 257 with normal doppler flows (control group). The primary outcome was a composite of maternal vascular malperfusion lesions (MVM) and fetal vascular malperfusion lesions (FVM). Secondary outcomes were macroscopic placental characteristics and various obstetrical and neonatal outcomes. RESULTS The study group had lower birthweight compared with the normal CPR group (2063.5 ± 470.5 vs. 2351.6 ± 387.4 g. P < 0.0001), higher rates of composite adverse neonatal outcomes (34.2% vs. 22.5%, p < 0.0001), lower mean placental weight (318 ± 71.6 vs. 356.6 ± 76.5 g, p < 0.0001), as well as a higher prevalence of Vascular lesions of MVM (15.3% vs. 5.0%, p = 0.002), villous lesions of FVM (37.5% vs. 24.9%, p = 0.02), and composite FVM lesions (36.5% vs. 25.6%, p = 0.04). On multivariate regression analysis for MVM lesions and composite FVM lesions, abnormal CPR was found as an independent risk factor (aOR 2.17, 95% CI 1.63-4.19, and aOR 1.31, 95% CI 1.09-3.97, respectively). DISCUSSIONS Abnormal CPR in late FGR is reflected in placental histopathologic vascular malperfusion lesions, and the incidence of these lesions is higher than in FGR placentas with normal CPR.
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Affiliation(s)
- Anat Shmueli
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel.
| | - Liat Mor
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Ophir Blickstein
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Rinat Sela
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Eran Weiner
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Noa Gonen
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Letizia Schreiber
- Department of Pathology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Michal Levy
- Department of Obstetrics and Gynecology, the Edith Wolfson Medical Center, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Israel
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Wang J, Qiu F, Zhao Y, Gu S, Wang J, Zhang H. Exploration of fetal growth restriction induced by vitamin D deficiency in rats via Hippo-YAP signaling pathway. Placenta 2022; 128:91-99. [PMID: 36103800 DOI: 10.1016/j.placenta.2022.08.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/11/2022] [Accepted: 08/29/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Maternal vitamin D deficiency (VDD) is associated with intrauterine growth restriction (IUGR), but the exact mechanism remains unclear. Here we explored the mechanism through which VDD induced IUGR. METHODS Female SD rats were fed a control normal diet (VD > 800 IU/Kg) or VDD diet (VD: 0 IU/Kg) for 8 weeks. Then, females were mated with 12-week-old male SD rats, and fetal and placental tissue were collected on the gestational day 13 (GD13) or 18 (GD18) to analyze the effects of VDD on pregnancy outcome and embryonic development. In vitro, the VDR gene of HTR-8/SVneo cells was knocked down to establish VDD model. Then, HTR-8/SVneo cells were treated with the MST1/2 inhibitor XMU-MP-1 or 0.1 μM/L calcitriol for 24 h (h). The mechanism of Hippo-YAP signaling pathway in VDD-induced placental dysplasia was further investigated by western blot, invasion assay, wound healing assay and Hoechst/PI staining. RESULTS The IUGR of the pregnant rats in the VDD group was significant, the placental structure and function were damaged, and there was an obvious inflammatory response, accompanied by a significant increase in the level of the transcription co-activator YAP phosphorylation. In vitro, VDD significantly inhibited the migratory and invasive abilities of HTR-8/SVneo cells, accompanied by decreased EMT capacity and increased apoptosis. When intervening with XMU-MP-1 in advance, we found that the effects of VDD were neutralized by Hippo-YAP signaling blocker. DISCUSSION Maternal VDD causes placental dysplasia and IUGR, and these abnormal changes may be associated with the activation of Hippo-YAP signaling pathway.
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Affiliation(s)
- Jiongnan Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Fubin Qiu
- Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China.
| | - Yimin Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Siyu Gu
- Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Jia Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Huifeng Zhang
- Department of Pediatrics, The Second Hospital of Hebei Medical University, Shijiazhuang, 050073, China
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Tiwari P, Gupta MM, Jain SL. Placental findings in singleton stillbirths: a case-control study from a tertiary-care center in India. J Perinat Med 2022; 50:753-762. [PMID: 34587673 DOI: 10.1515/jpm-2021-0179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/11/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Placental examination in a case of stillbirth can provide insight into causative/associated factors with fetal demise. The aim of this study was to compare placental and umbilical cord pathologies in singleton stillbirth and livebirth placentas, and to find prevalence of various associated maternal and fetal clinical factors. METHODS This case-control study was conducted at a tertiary-care center in India over a period of 20 months. About 250 women who delivered stillborn fetus ≥28 weeks' gestation and 250 maternal-age-matched controls were recruited. Sociodemographic and clinical details were noted and placental gross and microscopic examination was done. Placental findings were compared between stillbirth and livebirth (overall), preterm stillbirth and preterm livebirth as well as term stillbirth and term livebirth in six categories - placenta gross, cord gross, membranes gross, maternal vascular malperfusion, fetal vascular malperfusion and inflammatory response. Prevalence of 11 maternal and fetal factors were studied in all categories of placental findings in both livebirth and stillbirth. RESULTS Placental findings in all six categories were significantly associated with stillbirths (p<0.05). The placental findings associated with stillbirth with highest odds included placental hypoplasia (OR 9.77, 95% CI 5.46-17.46), necrotizing chorioamnionitis (OR 9.30, 95% CI 1.17-73.96) and avascular villi (OR 8.45, 95% CI 3.53-20.25). More than half of the women with stillbirths had medical disorders (n=130, 52.0%) and the most prevalent was hypertensive disorder (n=45, 18.0%). CONCLUSIONS Changes in placenta are associated with development of stillbirth. Therefore, antenatal investigations to identify placental dysfunction should be investigated to determine whether these reduce stillbirth. Also, placental examination in a case of stillbirth can detect/diagnose many maternal/fetal conditions and thereby can help in preventing future stillbirths.
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Affiliation(s)
- Purnima Tiwari
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences Nagpur, Nagpur, India
| | - Madhavi M Gupta
- Department of Obstetrics & Gynaecology, Maulana Azad Medical College and associated Lok Nayak Hospital, New Delhi, India
| | - Shyama Lata Jain
- Department of Pathology, Maulana Azad Medical College, New Delhi, India
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Unique Severe COVID-19 Placental Signature Independent of Severity of Clinical Maternal Symptoms. Viruses 2021; 13:v13081670. [PMID: 34452534 PMCID: PMC8402730 DOI: 10.3390/v13081670] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Although the risk for transplacental transmission of SARS-CoV-2 is rare, placental infections with adverse functional consequences have been reported. This study aims to analyse histological placental findings in pregnancies complicated by SARS-CoV-2 infection and investigate its correlation with clinical symptoms and perinatal outcomes. We want to determine which pregnancies are at-risk to prevent adverse pregnancy outcomes related to COVID-19 in the future. METHODS A prospective, longitudinal, multicentre, cohort study. All pregnant women presenting between April 2020 and March 2021 with a nasopharyngeal RT-PCR-confirmed SARS-CoV-2 infection were included. Around delivery, maternal, foetal and placental PCR samples were collected. Placental pathology was correlated with clinical maternal characteristics of COVID-19. RESULTS Thirty-six patients were included, 33 singleton pregnancies (n = 33, 92%) and three twin pregnancies (n = 3, 8%). Twenty-four (62%) placentas showed at least one abnormality. Four placentas (4/39, 10%) showed placental staining positive for the presence of SARS-CoV-2 accompanied by a unique combination of diffuse, severe inflammatory placental changes with massive perivillous fibrin depositions, necrosis of syncytiotrophoblast, diffuse chronic intervillositis, and a specific, unprecedented CD20+ B-cell infiltration. This SARS-CoV-2 placental signature seems to correlate with foetal distress (75% vs. 15.6%, p = 0.007) but not with the severity of maternal COVID-19 disease. CONCLUSION We describe a unique placental signature in pregnant patients with COVID-19, which has not been reported in a historical cohort. We show that the foetal environment can be seriously compromised by disruption of placental function due to local, devastating SARS-CoV-2 infection. Maternal clinical symptoms did not predict the severity of the SARS-CoV-2-related placental signature, resulting in a lack of adequate identification of maternal criteria for pregnancies at risk. Close foetal monitoring and pregnancy termination in case of foetal distress can prevent adverse pregnancy outcomes due to COVID-19 related placental disease.
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