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Merriel A, Fitzgerald B, O'Donoghue K. SARS-CoV-2-Placental effects and association with stillbirth. BJOG 2024; 131:385-400. [PMID: 37984971 DOI: 10.1111/1471-0528.17698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/02/2023] [Accepted: 10/14/2023] [Indexed: 11/22/2023]
Abstract
SARS-CoV-2 has had a significant impact on pregnancy outcomes due to the effects of the virus and the altered healthcare environment. Stillbirth has been relatively hidden during the COVID-19 pandemic, but a clear link between SARS-CoV-2 and poor fetal outcome emerged in the Alpha and Delta waves. A small minority of women/birthing people who contracted COVID-19 developed SARS-CoV-2 placentitis. In many reported cases this was linked to intrauterine fetal death, although there are cases of delivery just before imminent fetal demise and we shall discuss how some cases are sub-clinical. What is surprising, is that SARS-CoV-2 placentitis is often not associated with severe maternal COVID-19 infection and this makes it difficult to predict. The worst outcomes seem to be with diffuse placental disease which occurs within 21 days of COVID-19 diagnosis. Poor outcomes are often pre-dated by reduced fetal movements but are not associated with ultrasound changes. In some cases, there has also been maternal thrombocytopenia, or coagulation abnormalities, which may provide a clue as to which pregnancies are at risk of fetal demise if a further variant of concern is to emerge. In future, multidisciplinary collaboration and cross-boundary working must be prioritised, to identify quickly such a phenomenon and provide clinicians with clear guidance for reducing fetal death and associated poor outcomes. While we wait to see if COVID-19 brings a future variant of concern, we must focus on appropriate future management of women who have had SARS-CoV-2 placentitis. As a placental condition with an infectious aetiology, SARS-CoV-placentitis is unlikely to recur in a subsequent pregnancy and thus a measured approach to subsequent pregnancy management is needed.
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Affiliation(s)
- Abi Merriel
- Centre for Women's Health Research, Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
- Liverpool Women's Hospital, Liverpool, UK
| | | | - Keelin O'Donoghue
- Pregnancy Loss Research Group, Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland
- Cork University Maternity Hospital, Cork, Ireland
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2
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Lopuhaä B, Voorham QJM, van Kemenade FJ, von der Thüsen JH. COVID-19 in the Netherlands: lessons from a nationwide query of dutch autopsy, histology, and cytology pathological reports. Virchows Arch 2024; 484:429-439. [PMID: 38413389 PMCID: PMC11021292 DOI: 10.1007/s00428-024-03771-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 02/08/2024] [Accepted: 02/20/2024] [Indexed: 02/29/2024]
Abstract
Since the onset of the COVID-19 pandemic, autopsies have played a valuable role in understanding the pathophysiology of COVID-19. In this study, we have analyzed COVID-19-related pathology reports from autopsies, histology, and cytology on a nationwide level. Pathology reports from all 43 pathology laboratories in the Netherlands stating "COVID," "Corona," and/or "SARS" were queried from the Dutch Nationwide Pathology Database (Palga). Consecutive reports of the included patients were also retrieved. Out of 5065 entries, a total of 1833 eligible COVID-19-related pathology reports between January 2020 and June 2021 were included in this collection of reports. Lung histopathology reports reflected differences in the severity of abnormalities (acute diffuse alveolar damage, alveolar histiocytes, and thrombi during the first three pandemic waves (Wuhan variant) versus the fourth wave (alpha variant)). Autopsy reports from 2020 state significantly shorter disease duration and younger age of death compared to autopsy reports from 2021. All reports together reflected a more granular pathology with comorbidities such as chronic histiocytic intervillositis, perniosis, and thrombi found in a variety of organs (lungs, kidneys, and small and large intestines). This nationwide overview of pathology reports provides data related to deaths as well as comorbidities in a clinical setting of COVID-19. Certain findings reported in SARS-CoV-infected lungs and placentas were also reported in post-COVID-19 tissue of the same kind. Consecutive reports after the earliest reports with COVID-19 allowed for follow-up reports. These follow-up reports can help with post-viral studies regarding long-term effects of COVID-19 as well as identifying the effects of different SARS-CoV-2 variants.
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Affiliation(s)
- Boaz Lopuhaä
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands.
| | - Q J M Voorham
- Dutch Nationwide Pathology Databank (Palga), Houten, the Netherlands
| | - Folkert J van Kemenade
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - Jan H von der Thüsen
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center, Doctor Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
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3
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Mohor CI, Oprinca GC, Oprinca-Muja A, Fleacă SR, Boicean A, Boeraș I, Roman MD, Mohor CI. Vertical transmission of SARS-CoV-2 from mother to fetus. Pathology 2024; 56:107-110. [PMID: 37739925 DOI: 10.1016/j.pathol.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/04/2023] [Accepted: 06/16/2023] [Indexed: 09/24/2023]
Affiliation(s)
- Cosmin I Mohor
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
| | - George C Oprinca
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania.
| | | | - Sorin R Fleacă
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
| | - Adrian Boicean
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
| | - Ioana Boeraș
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
| | - Mihai D Roman
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
| | - Călin I Mohor
- Lucian Blaga University of Sibiu, Faculty of Medicine, Sibiu, Romania
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4
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Gostomczyk K, Borowczak J, Siekielska-Domanowska M, Szczerbowski K, Maniewski M, Dubiel M, Szylberg Ł, Bodnar M. Mechanisms of SARS-CoV-2 Placental Transmission. Arch Immunol Ther Exp (Warsz) 2024; 72:aite-2024-0001. [PMID: 38299561 DOI: 10.2478/aite-2024-0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/07/2023] [Indexed: 02/02/2024]
Abstract
The widespread occurrence of SARS-CoV-2 infections and the diverse range of symptoms have placed significant strain on healthcare systems worldwide. Pregnancy has also been affected by COVID-19, with an increased risk of complications and unfavorable outcomes for expectant mothers. Multiple studies indicate that SARS-CoV-2 can infiltrate the placenta, breach its protective barrier, and infect the fetus. Although the precise mechanisms of intrauterine transmission remain unclear, factors such as perinatal infection, macrophages, sexual intercourse, and the virus' interaction with host angiotensin-converting enzyme 2 (ACE2) and neuropilin-1 (NRP-1) proteins appear to play a role in this process. The integrity of the placental barrier fluctuates throughout pregnancy and appears to influence the likelihood of fetal transmission. The expression of placental cell receptors, like ACE2, changes during pregnancy and in response to placental damage. However, due to the consistent presence of others, such as NRP-1, SARS-CoV-2 may potentially enter the fetus at different stages of pregnancy. NRP-1 is also found in macrophages, implicating maternal macrophages and Hofbauer cells as potential routes for viral transmission. Our current understanding of SARS-CoV-2's vertical transmission pathways remains limited. Some researchers question the ACE2-associated transmission model due to the relatively low expression of ACE2 in the placenta. Existing studies investigating perinatal transmission and the impact of sexual intercourse have either involved small sample sizes or lacked statistical significance. This review aims to explore the current state of knowledge regarding the potential mechanisms of COVID-19 vertical transmission, identifying areas where further research is needed to fill the gaps in our understanding.
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Affiliation(s)
- Karol Gostomczyk
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
- Department of Tumor Pathology and Pathomorphology, Oncology Centre - Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
| | - Jędrzej Borowczak
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Marta Siekielska-Domanowska
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Krzysztof Szczerbowski
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Mateusz Maniewski
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Mariusz Dubiel
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Łukasz Szylberg
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
- Department of Tumor Pathology and Pathomorphology, Oncology Centre - Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
- Chair of Pathology, Dr. Jan Biziel Memorial University Hospital No. 2, Bydgoszcz, Poland
| | - Magdalena Bodnar
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
- Chair of Pathology, Dr. Jan Biziel Memorial University Hospital No. 2, Bydgoszcz, Poland
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Conde TC, de Sá RAM, Portari EA, Velarde LGC, de Ávila LM, Araujo E. Clinical and serological findings in pregnant women and newborns: patterns of coronavirus disease 2019 placental histopathology. REVISTA DA ASSOCIACAO MEDICA BRASILEIRA (1992) 2023; 69:e20230616. [PMID: 37971121 PMCID: PMC10645172 DOI: 10.1590/1806-9282.20230616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVE The objective of this study was to evaluate the correlation between clinical and serological findings of pregnant women and newborns with patterns of histopathologic changes of the placenta diagnosed with coronavirus disease 2019. METHODS A prospective descriptive study was conducted with pregnant women who were positive for SARS-CoV-2 by reverse transcription polymerase chain reaction or serology (IgG and IgM). Clinical analyses were performed using ELISA to detect anti-SARS-CoV-2 IgG and IgA antibodies using the S1 spike protein domain with the Euroimmun kit. Histopathologic analyses of placentas were performed by two expert pathologists. RESULTS Maternal SARS-CoV-2 infection was associated with increased neonatal hospital length of stay (p=0.03), increased preterm birth (p=0.04), and Apgar score<7 at 1st min (p=0.00) and 5th min (p=0.02). Pregnant women with positive IgG and/or IgA at delivery had a higher incidence of placental histopathologic changes in addition to a greater likelihood of having an IgG-positive fetus (p<0.0001). Placentas with positive reverse transcription polymerase chain reaction for SARS-CoV-2 had a higher incidence of histopathologic changes such as maternal vascular hypoperfusion changes (p=0.00). CONCLUSION Maternal SARS-CoV-2 infection was associated with adverse perinatal outcomes. Pregnant women with positive IgG at delivery had a higher incidence of placental histopathologic changes. Placentas with positive reverse transcription polymerase chain reaction for SARS-CoV-2 had a higher incidence of histopathologic changes such as maternal vascular hypoperfusion.
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Affiliation(s)
- Thayana Camara Conde
- Universidade Federal Fluminense, Department of Obstetrics – Niterói (RJ), Brazil
- Perinatal Rede D'or, Obstetrics Service – Rio de Janeiro (RJ), Brazil
| | - Renato Augusto Moreira de Sá
- Universidade Federal Fluminense, Department of Obstetrics – Niterói (RJ), Brazil
- Perinatal Rede D'or, Obstetrics Service – Rio de Janeiro (RJ), Brazil
| | - Elyzabeth Avvad Portari
- National Institute of Women, Children and Adolescents Health Fernandes Figueira/Oswaldo Cruz Foundation, Pathology Service – Rio de Janeiro (RJ), Brazil
| | | | | | - Edward Araujo
- Universidade Federal de São Paulo, Paulista School of Medicine, Department of Obstetrics – São Paulo (SP), Brazil
- Universidade Municipal de São Caetano do Sul, Medical Course – São Paulo (SP), Brazil
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6
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Lin R, Forquer H, Cviko-Pajt A, Schauer GM, Abellar RG, Hedderson M, Kuzniewicz MW, Greenberg MB. Placental Histopathologic Findings of a Large Cohort of Patients With SARS-CoV-2 Infection During Pregnancy. Int J Gynecol Pathol 2023; 42:589-596. [PMID: 36811836 DOI: 10.1097/pgp.0000000000000940] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Pregnant individuals with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are at a higher risk for adverse pregnancy outcomes. Previous small cohort studies have shown increased frequency of placental lesions associated with maternal vascular malperfusion, fetal vascular malperfusion, and inflammation among patients with SARS-CoV-2, without controlling for cardiometabolic risk factors among many such patients. We aimed to evaluate whether SARS-CoV-2 infection during pregnancy is independently associated with placental abnormalities when controlling for risk factors that could affect placental histopathology. Retrospective cohort study of placentas from singleton pregnancies in Kaiser Permanente Northern California from March to December 2020. Pathologic findings were compared among those with confirmed cases of SARS-CoV-2 during pregnancy and those without. We examined the association between SARS-CoV-2 infection and categorical placental pathologies, controlling for maternal age, gestational age, prepregnancy body mass index, gestational hypertension, preeclampsia/eclampsia, preexisting diabetes, history of thrombosis, and stillbirth. A total of 2,989 singleton gestation placentas were analyzed, 416 (13%) from pregnancies with SARS-CoV-2 infection and 2,573 (86%) from those without infection. Among placentas from pregnancies with SARS-CoV-2, 54.8% had evidence of inflammation, 27.1% maternal malperfusion abnormality, 20.7% massive perivillous fibrin or chronic villitis, 17.3% villous capillary abnormality, and 15.1% fetal malperfusion. After controlling for risks factors and stratifying interval time between SARS-CoV-2 infection and delivery, no association was found between placental abnormalities and SARS-CoV-2 infection during pregnancy. SARS-CoV-2 infection was not associated with an increased risk of placentally mediated adverse outcomes during pregnancy, compared with placentas sent for other indications, in this large diverse cohort.
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7
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Heeralall C, Ibrahim UH, Lazarus L, Gathiram P, Mackraj I. The effects of COVID-19 on placental morphology. Placenta 2023; 138:88-96. [PMID: 37235921 DOI: 10.1016/j.placenta.2023.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/10/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023]
Abstract
The impact of the COVID-19 infection, caused by Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), during the pandemic has been considerably more severe in pregnant women than non-pregnant women. Therefore, a review detailing the morphological alterations and physiological changes associated with COVID-19 during pregnancy and the effect that these changes have on the feto-placental unit is of high priority. This knowledge is crucial for these mothers, their babies and clinicians to ensure a healthy life post-pandemic. Hence, we review the placental morphological changes due to COVID-19 to enhance the general understanding of how pregnant mothers, their placentas and unborn children may have been affected by this pandemic. Based on current literature, we deduced that COVID-19 pregnancies were oxygen deficient, which could further result in other pregnancy-related complications like preeclampsia and IUGR. Therefore, we present an up-to-date review of the COVID-19 pathophysiological implications on the placenta, covering the function of the placenta in COVID-19, the effects of this virus on the placenta, its functions and its link to other gestational complications. Furthermore, we highlight the possible effects of COVID-19 therapeutic interventions on pregnant mothers and their unborn children. Based on the literature, we strongly suggest that consistent surveillance for the mothers and infants from COVID-19 pregnancies be prioritised in the future. Though the pandemic is now in the past, its effects are long-term, necessitating the monitoring of clinical manifestations in the near future.
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Affiliation(s)
- C Heeralall
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - U H Ibrahim
- Discipline of Human Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - L Lazarus
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - P Gathiram
- Discipline of Family Medicine, School of Public Health and Nursing, University of KwaZulu-Natal, Durban, South Africa
| | - I Mackraj
- Discipline of Human Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Remoué A, Suazo Y, Uguen M, Uguen A, Marcorelles P, de Moreuil C. The Histopathological "Placentitis Triad" Is Specific for SARS-CoV-2 Infection, and Its Acute Presentation Can Be Associated with Poor Fetal Outcome. Life (Basel) 2023; 13:479. [PMID: 36836836 PMCID: PMC9963180 DOI: 10.3390/life13020479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/06/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
(1) Background: Placental histological lesions reported in relation with SARS-CoV-2 infection are various, with potential consequences such as fetal growth retardation, prematurity or stillbirth/neonatal death. We report here on a placental pathological association which could be specific for SARS-CoV-2 infection and associated with poor fetal outcome; (2) Methods: We collected all the placental pathological examinations performed in Brest University Hospital (France) since the beginning of COVID-19 pandemic with a known maternal SARS-CoV-2 infection and a poor pregnancy outcome. In these cases, we described the pathological lesions and we searched for these lesions in a large series of placentas collected and examined in the same institution before the SARS-CoV-2 pandemic; (3) Results: Three cases with severe fetal outcome (tardive abortion, prematurity, neonatal death), from the first to the third trimesters of pregnancy, were included. The three cases showed features of massive and acute "placentitis triad" consisting in massive perivillous fibrin deposition, sub-acute intervillositis and trophoblastic necrosis. This association was not encountered in any of 8857 placentas analyzed during the period between 2002 and 2012 in our institution; (4) Conclusions: The "placentitis triad" appears to be specific for SARS-CoV-2 infection and, in case of massive and acute presentation, could result in poor fetal outcome.
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Affiliation(s)
- Annabelle Remoué
- Service d’Anatomie et Cytologie Pathologiques, CHRU Morvan, 2 Avenue Foch, 29609 Brest, France
| | - Yurina Suazo
- Service d’Anatomie et Cytologie Pathologiques, CHRU Morvan, 2 Avenue Foch, 29609 Brest, France
| | - Marie Uguen
- Service d’Anatomie et Cytologie Pathologiques, CHRU Morvan, 2 Avenue Foch, 29609 Brest, France
| | - Arnaud Uguen
- Service d’Anatomie et Cytologie Pathologiques, CHRU Morvan, 2 Avenue Foch, 29609 Brest, France
- CHRU de Brest, LBAI (Lymphocytes B, Autoimmunité et Immunotherapies), University of Brest, Inserm, UMR 1227, 29200 Brest, France
| | - Pascale Marcorelles
- Service d’Anatomie et Cytologie Pathologiques, CHRU Morvan, 2 Avenue Foch, 29609 Brest, France
- CHU de Brest, LIEN (Laboratoire Interactions Epithéliums Neurones), University of Brest, EA 4586, 29200 Brest, France
| | - Claire de Moreuil
- Département de Médecine Vasculaire, Médecine Interne et Pneumologie, CHRU de Brest, 29609 Brest, France
- CHRU de Brest, GETBO (Groupe d’Etude de la Thrombose de Bretagne Occidentale), University of Brest, Inserm, UMR 1304, 29200 Brest, France
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Carvajal J, Casanello P, Toso A, Farías M, Carrasco-Negue K, Araujo K, Valero P, Fuenzalida J, Solari C, Sobrevia L. Functional consequences of SARS-CoV-2 infection in pregnant women, fetoplacental unit, and neonate. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166582. [PMID: 36273675 PMCID: PMC9581789 DOI: 10.1016/j.bbadis.2022.166582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 11/04/2022]
Abstract
The SARS-CoV-2 infection causes COVID-19 disease, characterized by acute respiratory distress syndrome, bilateral pneumonia, and organ failure. The consequences of maternal SARS-CoV-2 infection for the pregnant woman, fetus, and neonate are controversial. Thus, it is required to determine whether there is viral and non-viral vertical transmission in COVID-19. The disease caused by SARS-CoV-2 leads to functional alterations in asymptomatic and symptomatic pregnant women, the fetoplacental unit and the neonate. Several diseases of pregnancy, including COVID-19, affect the fetoplacental function, which causes in utero programming for young and adult diseases. A generalized inflammatory state and a higher risk of infection are seen in pregnant women with COVID-19. Obesity, diabetes mellitus, and hypertension may increase the vulnerability of pregnant women to infection by SARS-CoV-2. Alpha, Delta, and Omicron variants of SARS-CoV-2 show specific mutations that seem to increase the capacity of the virus to infect the pregnant woman, likely due to increasing its interaction via the virus S protein and angiotensin-converting enzyme 2 receptors. This review shows the literature addressing to what extent COVID-19 in pregnancy affects the pregnant woman, fetoplacental unit, and neonate. Prospective studies that are key in managing SARS-CoV-2 infection in pregnancy are discussed.
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Affiliation(s)
- Jorge Carvajal
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile.
| | - Paola Casanello
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile; Department of Neonatology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile; Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen (UMCG), 9713GZ, Groningen, the Netherlands
| | - Alberto Toso
- Department of Neonatology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Marcelo Farías
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Karina Carrasco-Negue
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Kenny Araujo
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Paola Valero
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile; Faculty of Health Sciences, Universidad de Talca, Talca 3460000, Chile
| | - Javiera Fuenzalida
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Caterina Solari
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Luis Sobrevia
- Department of Obstetrics, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile; Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile; Medical School (Faculty of Medicine), Sao Paulo State University (UNESP), Brazil; Department of Physiology, Faculty of Pharmacy, Universidad de Sevilla, Seville E-41012, Spain; University of Queensland, Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Herston 4029, Queensland, Australia; Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen (UMCG), 9713GZ, Groningen, the Netherlands; Tecnologico de Monterrey, Eutra, The Institute for Obesity Research (IOR), School of Medicine and Health Sciences, Monterrey, Nuevo León, Mexico.
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10
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Meng X, Zhu K, Wang J, Liu P. Can SARS-CoV-2 positive pregnant women affect the hearing of their newborns: A systematic review. Am J Otolaryngol 2022; 43:103523. [PMID: 35691051 PMCID: PMC9161687 DOI: 10.1016/j.amjoto.2022.103523] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 05/30/2022] [Indexed: 01/08/2023]
Abstract
The 2019 coronavirus disease (COVID-19) pandemic has caused over 500 million confirmed cases (including pregnant women) worldwide. Recently, hearing status in newborns born to mothers with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has received attention. This systematic review outlines the current knowledge regarding the effects of maternal SARS-CoV-2 infection during pregnancy on newborn hearing. Intrauterine SARS-CoV-2 infection has the potential to affect the auditory system of the newborn due to intrauterine hypoxia and vertical transmission. SARS-CoV-2 might have a greater influence on hearing loss (HL) in newborns during the second and third trimesters of pregnancy. Therefore, all newborns whose mothers had COVID-19 during pregnancy should be evaluated for cochlear function, regardless of whether their mothers were symptomatic at the time of the disease. However, the understanding of this issue is not consistent and remains controversial. Since early identification and intervention of congenital HL are crucial to the language development of newborns, newborns should be provided with audiological evaluation by various approaches, including Tele-audiology, in the COVID-19 era.
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11
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Samara A, Khalil A, O’Brien P, Herlenius E. The effect of the delta SARS-CoV-2 variant on maternal infection and pregnancy. iScience 2022; 25:104295. [PMID: 35492217 PMCID: PMC9040522 DOI: 10.1016/j.isci.2022.104295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A greater proportion of pregnant women with COVID-19 have mild disease compared with their non-pregnant counterparts. Paradoxically, however, they are at higher risk of developing severe disease, requiring respiratory support and admission to intensive care. The delta SARS-Cov-2 variant is associated with increased risk of hospitalization and morbidity in unvaccinated pregnant populations. However, it is not known whether the worse pregnancy outcomes associated with the delta variant are due to a direct effect of the virus on the pregnancy, or whether this effect is mediated through more severe maternal infection. Here, we synthesize studies of COVID-19 pregnancies, focusing on the different routes of SARS-CoV-2 infection of lung and placenta, and the mechanisms of syncytial formation for each SARS-CoV-2 variant. To delineate COVID-19 complications in pregnant women, future studies should explore whether the delta variant causes greater placental infection compared to other variants and contributes to increased syncytial formation.
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Affiliation(s)
- Athina Samara
- Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Asma Khalil
- Fetal Medicine Unit, St George’s Hospital, St George’s University of London, London, UK
- Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK
- Fetal Medicine Unit, Liverpool Women’s Hospital, University of Liverpool, Liverpool, UK
| | - Patrick O’Brien
- The Royal College of Obstetricians and Gynaecologists, London, UK
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Eric Herlenius
- Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
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Almohammadi NH. A review of the main placenta histopathological findings reported in coronavirus disease 2019. J Taibah Univ Med Sci 2022; 17:165-173. [PMID: 35250425 PMCID: PMC8879984 DOI: 10.1016/j.jtumed.2022.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 12/30/2022] Open
Abstract
Several studies have reported that pregnant women are more susceptible to contracting the SARS-CoV-2 disease. However, SARS-CoV-2 infection studies have limited evidence regarding its impact on pregnancy, particularly its pathological effects on the maternal-fetal interface. This review emphasized the placental structures and immunomodulatory defense mechanism against the viral infection COVID and highlighted the spectrum of reported histopathological changes from SARS-CoV-2-infected mothers' placenta to contribute to the knowledge of the nature of this placental pathology. Further studies where collaborations that seek to maximize sample numbers analyzed can be performed to improve the generalizability and reliability of the findings. This can lead to improved knowledge on the relationship between placental dysfunction and pathology from maternal SARS-CoV-2 infection. Consequently, this can help improve maternity care delivery during the pandemic.
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Affiliation(s)
- Nawal H. Almohammadi
- Department of Pathology, Faculty of Medicine, Taibah University, Madinah, KSA
- Department of Histopathology, Prince Sultan Armed Forces Hospital, Madinah, KSA
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