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Stadtmauer DJ, Basanta S, Maziarz JD, Cole AG, Dagdas G, Smith GR, van Breukelen F, Pavličev M, Wagner GP. Comparative single cell analysis reveals complex patterns of cell type and cell signaling innovations at the fetal-maternal interface. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.01.591945. [PMID: 38746137 PMCID: PMC11092578 DOI: 10.1101/2024.05.01.591945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The decidual-placental interface is one of the most diverse and rapidly evolving tissues in mammals. Its origin as a chimeric fetal-maternal tissue poses a unique evolutionary puzzle. We present single-cell RNA sequencing atlases from the fetal-maternal interfaces of the opossum, a marsupial, the Malagasy common tenrec, an afrotherian with primitive reproductive features, and mouse, guinea pig, and human. Invasive trophoblast shares a common transcriptomic signature across eutherians, which we argue represents a cell type family that radiated following the evolution of hemochorial placentation. We find evidence that the eutherian decidual stromal cell evolved stepwise from a predecidual state retained in Tenrec , followed by a second decidual cell type originating in Boreoeutheria with endocrine characteristics. We reconstruct ligand-receptor signaling to test evolutionary hypotheses at scale. Novel trophoblast and decidual cell types display strong integration into signaling networks compared to other cells. Additionally, we find consistent disambiguation between fetal and maternal signaling. Using phylogenetic analysis, we infer the cell-cell signaling network of the Placental common ancestor, and identify increased rates of signaling evolution in Euarchontoglires. Together, our findings reveal novel cell type identities and cell signaling dynamics at the mammalian fetal-maternal interface.
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de Oliveira GB, de Araújo Júnior HN, de Moura CEB, Favaron PO, Pereira AF, de Oliveira MF. Placental development in the early stages of red-rumped agouti pregnancy ( Dasyprocta leporina Linnaeus, 1758). J Vet Sci 2023; 24:e49. [PMID: 38031643 PMCID: PMC10556294 DOI: 10.4142/jvs.22323] [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: 12/20/2022] [Revised: 04/18/2023] [Accepted: 05/17/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Hystricomorpha rodents display a similar placentation model to humans. The present study was carried out considering the scarcity of information concerning the placental development in agouti. OBJECTIVE Describe the microscopy of the placenta, subplacenta and yolk sac of agoutis in early pregnancy and report on the inversion of the yolk sac. METHODS Fifteen females between the 14th-32nd day of gestation were used following euthanasia. Gestational buttons were collected, fixed, processed, stained to optical microscopy or immunohistochemistry. RESULTS Chorioallantoic placenta (CP) ranged from conical to a half-sphere, as follows: from the 14th to 17th day, the CP displays an inverted "V" shape, predominantly formed by cytotrophoblasts; from 20 to 22 days, formed almost entirely by cytotrophoblasts; at 28 days, a half sphere, with distinct lobes and interlobular area, numerous maternal gaps delimited by syncytiotrophoblasts and trophoblast giant cells; at 32 days, globose and undergoing the maturation process. Subplacenta, located between decidua and CP, initially presents septa consisting of simple columnar epithelium and after 17 days, comprising stratified epithelium. Visceral yolk sac (VYS) is attached to two CP projections between 14 and 17 days, formed by a simple cubic epithelium and inverted. Between 20 and 22 days, the epithelium displays apical villous projections with cytoplasmic vacuoles and a vascularized mesoderm. After the 24th day, the VYS near the placenta is pleated, very vascularized and villous, with decreased villi sizes further away from the placenta. CONCLUSION The agouti CP displays similar characteristics to other hystricomorpha, including placenta lobulation, a subplacenta and an inverted vitelline placenta.
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Affiliation(s)
| | | | | | | | | | - Moacir Franco de Oliveira
- Department of Animal Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN 59.625-900, Brasil
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3
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Berkebile ZW, Putri DS, Abrahante JE, Seelig DM, Schleiss MR, Bierle CJ. The Placental Response to Guinea Pig Cytomegalovirus Depends Upon the Timing of Maternal Infection. Front Immunol 2021; 12:686415. [PMID: 34211475 PMCID: PMC8239309 DOI: 10.3389/fimmu.2021.686415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
Human cytomegalovirus (HCMV) infects the placenta, and these placental infections can cause fetal injury and/or demise. The timing of maternal HCMV infection during pregnancy is a determinant of fetal outcomes, but how development affects the placenta's susceptibility to infection, the likelihood of placental injury post-infection, and the frequency of transplacental HCMV transmission remains unclear. In this study, guinea pig cytomegalovirus (GPCMV) was used to model primary maternal infection and compare the effects of infection at two different times on the placenta. When guinea pigs were infected with GPCMV at either 21- or 35-days gestation (dGA), maternal and placental viral loads, as determined by droplet digital PCR, were not significantly affected by the timing of maternal infection. However, when the transcriptomes of gestational age-matched GPCMV-infected and control placentas were compared, significant infection-associated changes in gene expression were only observed after maternal infection at 35 dGA. Notably, transcripts associated with immune activation (e.g. Cxcl10, Ido1, Tgtp1, and Tlr8) were upregulated in the infected placenta. A GPCMV-specific in situ hybridization assay detected rare infected cells in the main placenta after maternal infection at either time, and maternal infection at 35 dGA also caused large areas of GPCMV-infected cells in the junctional zone. As GPCMV infection after mid-gestation is known to cause high rates of stillbirth and/or fetal growth restriction, our results suggest that the placenta becomes sensitized to infection-associated injury late in gestation, conferring an increased risk of adverse pregnancy outcomes after cytomegalovirus infection.
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Affiliation(s)
- Zachary W. Berkebile
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Minnesota, Minneapolis, MN, United States
| | - Dira S. Putri
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Minnesota, Minneapolis, MN, United States
| | - Juan E. Abrahante
- Informatics Institute, University of Minnesota, Minneapolis, MN, United States
| | - Davis M. Seelig
- Department of Veterinary Clinical Sciences, University of Minnesota, Minneapolis, MN, United States
| | - Mark R. Schleiss
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Minnesota, Minneapolis, MN, United States
| | - Craig J. Bierle
- Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Minnesota, Minneapolis, MN, United States
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Valdés G, Acuña S, Schneider D, Ortíz R, Padilla O. Bradykinin Exerts Independent Effects on Trophoblast Invasion and Blood Pressure in Pregnant Guinea Pigs. Reprod Sci 2020; 27:1648-1655. [PMID: 32430711 DOI: 10.1007/s43032-020-00195-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The pleiotropic kininogen-kallikrein-kinin system is upregulated in pregnancy and localizes in the uteroplacental unit. To identify the systemic and local participation of the bradykinin type 2 receptor (B2R), this was antagonized by Bradyzide (BDZ) during 2 periods: from days 20 to 34 and from days 20 to 60 in pregnant guinea pigs. METHODS Pregnant guinea pigs received subcutaneous infusions of saline or BDZ from gestational day 20 until sacrifice on day 34 (Short B2R Antagonism [SH-B2RA]) or on day 60 (Prolonged B2R Antagonism [PR-B2RA]). In SH-BDZA, systolic blood pressure was determined on day 34, while in PR-BDZA it was measured preconceptionally, at days 40 and 60. On gestational day 60, plasma creatinine, uricemia, proteinuria, fetal, placental and maternal kidney weight, and the extent of trophoblast invasion were evaluated. RESULTS The SH-B2RA increased systolic blood pressure on day 34 and reduced trophoblast myometrial invasion, spiral artery remodeling, and placental sufficiency. The PR-B2RA suppressed the normal blood pressure fall observed on days 40 and 60; vascular transformation, placental efficiency, urinary protein, serum creatinine, and uric acid did not differ between the groups. The proportion of all studied mothers with lost fetuses was greater under BDZ infusion than in controls. CONCLUSION The increased systolic blood pressure and transient reduction in trophoblast invasion and fetal/placental weight in the SH-B2R blockade and the isolated impact on blood pressure in the PR-B2R blockade indicate that bradykinin independently modulates systemic hemodynamics and the uteroplacental unit through cognate vascular and local B2R receptors.
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Affiliation(s)
- Gloria Valdés
- Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile.
- Departamento de Nefrología, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile.
| | - Stephanie Acuña
- Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Daniela Schneider
- Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Rita Ortíz
- Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Oslando Padilla
- Departamento de Salud Pública, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
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5
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Hensel ME, Chaki SP, Stranahan L, Gregory AE, van Schaik EJ, Garcia-Gonzalez DG, Khalaf O, Samuel JE, Arenas-Gamboa AM. Intratracheal Inoculation with Brucella melitensis in the Pregnant Guinea Pig Is an Improved Model for Reproductive Pathogenesis and Vaccine Studies. Infect Immun 2020; 88:e00204-20. [PMID: 32690632 PMCID: PMC7504952 DOI: 10.1128/iai.00204-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/10/2020] [Indexed: 11/20/2022] Open
Abstract
Reproductive failure is the hallmark of brucellosis in animals. An uncommon but important complication in pregnant women who become acutely infected with Brucella melitensis is spontaneous pregnancy loss or vertical transmission to the fetus. Unfortunately, the mechanism behind reproductive failure is still obscure, partially due to the lack of a proper study model. Recently, it was demonstrated that intratracheal (IT) inoculation of nonpregnant guinea pigs would replicate features of clinical disease in humans. To determine if IT inoculation would induce reproductive disease, guinea pigs were infected at mid-gestation and monitored daily for fever and abortions. Fever developed between day 14 to 18 postinoculation, and by 3 weeks postinoculation, 75% of pregnant guinea pigs experienced stillbirths or spontaneous abortions mimicking natural disease. Next, to investigate the guinea pig as a model for evaluating vaccine efficacy during pregnancy, nonpregnant guinea pigs were vaccinated with S19, 16MΔvjbR + Quil-A, or 100 μl PBS + Quil-A (as control). Guinea pigs were bred and vaccinated guinea pigs were challenged at mid-gestation with B. melitensis IT inoculation and monitored for fever and abortions. Vaccination with both vaccines prevented fever and protected against abortion. Together, this study indicates that pregnant guinea pigs are an appropriate animal model to study reproductive disease and offer an improved model to evaluate the ability of vaccine candidates to protect against a serious manifestation of disease.
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Affiliation(s)
- Martha E Hensel
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Sankar P Chaki
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Lauren Stranahan
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Anthony E Gregory
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M University, College Station, Texas, USA
| | - Erin J van Schaik
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M University, College Station, Texas, USA
| | - Daniel G Garcia-Gonzalez
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Omar Khalaf
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
- Department of Veterinary Pathology and Poultry Diseases, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq
| | - James E Samuel
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M University, College Station, Texas, USA
| | - Angela M Arenas-Gamboa
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
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Acuña F, Barbeito CG, Portiansky EL, Ranea G, Nishida F, Miglino MA, Flamini MA. Early and natural embryonic death in
Lagostomus maximus
: Association with the uterine glands, vasculature, and musculature. J Morphol 2020; 281:710-724. [DOI: 10.1002/jmor.21127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Francisco Acuña
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Cátedra de Histología y Embriología, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LHYEDEC‐FCV‐UNLP) La Plata Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT La Plata Argentina
| | - Claudio G. Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Cátedra de Histología y Embriología, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LHYEDEC‐FCV‐UNLP) La Plata Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT La Plata Argentina
| | - Enrique L. Portiansky
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT La Plata Argentina
- Laboratorio de Análisis de Imágenes, Cátedra de Patología General Veterinaria, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LAI‐FCV‐UNLP) La Plata Argentina
| | - Guadalupe Ranea
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Cátedra de Histología y Embriología, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LHYEDEC‐FCV‐UNLP) La Plata Argentina
| | - Fabian Nishida
- Consejo Nacional de Investigaciones Científicas y Técnicas, CCT La Plata Argentina
- Laboratorio de Análisis de Imágenes, Cátedra de Patología General Veterinaria, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LAI‐FCV‐UNLP) La Plata Argentina
| | - María A. Miglino
- Departamento de Cirugía, Facultad de Medicina Veterinaria y ZootecniaUniversidad de San Paulo San Pablo Brazil
| | - Mirta A. Flamini
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Cátedra de Histología y Embriología, Facultad de Ciencias VeterinariasUniversidad Nacional de La Plata (LHYEDEC‐FCV‐UNLP) La Plata Argentina
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7
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Soares MJ, Varberg KM, Iqbal K. Hemochorial placentation: development, function, and adaptations. Biol Reprod 2019; 99:196-211. [PMID: 29481584 DOI: 10.1093/biolre/ioy049] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/21/2018] [Indexed: 11/12/2022] Open
Abstract
Placentation is a reproductive adaptation that permits fetal growth and development within the protected confines of the female reproductive tract. Through this important role, the placenta also determines postnatal health and susceptibility to disease. The hemochorial placenta is a prominent feature in primate and rodent development. This manuscript provides an overview of the basics of hemochorial placental development and function, provides perspectives on major discoveries that have shaped placental research, and thoughts on strategies for future investigation.
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Affiliation(s)
- Michael J Soares
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA.,Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas, USA and the Center for Perinatal Research, Children΄s Research Institute, Children΄s Mercy, Kansas City, Missouri, USA
| | - Kaela M Varberg
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Khursheed Iqbal
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
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8
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Valdés G, Acuña S, Schneider D, Ortíz R, Padilla O. Bradykinin Exerts Independent Effects on Trophoblast Invasion and Blood Pressure in Pregnant Guinea Pigs. Reprod Sci 2019:1933719119833494. [PMID: 30836849 DOI: 10.1177/1933719119833494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION: The pleiotropic kininogen-kallikrein-kinin system is upregulated in pregnancy and localizes in the uteroplacental unit. To identify the systemic and local participation of the bradykinin type 2 receptor (B2R), this was antagonized by Bradyzide (BDZ) during 2 periods: from days 20 to 34 and from days 20 to 60 in pregnant guinea pigs. METHODS: Pregnant guinea pigs received subcutaneous infusions of saline or BDZ from gestational day 20 until sacrifice on day 34 (Short B2R Antagonism [SH-B2RA]) or on day 60 (Prolonged B2R Antagonism [PR-B2RA]). In SH-BDZA, systolic blood pressure was determined on day 34, while in PR-BDZA it was measured preconceptionally, at days 40 and 60. On gestational day 60, plasma creatinine, uricemia, proteinuria, fetal, placental and maternal kidney weight, and the extent of trophoblast invasion were evaluated. RESULTS: The SH-B2RA increased systolic blood pressure on day 34 and reduced trophoblast myometrial invasion, spiral artery remodeling, and placental sufficiency. The PR-B2RA suppressed the normal blood pressure fall observed on days 40 and 60; vascular transformation, placental efficiency, urinary protein, serum creatinine, and uric acid did not differ between the groups. The proportion of all studied mothers with lost fetuses was greater under BDZ infusion than in controls. CONCLUSION: The increased systolic blood pressure and transient reduction in trophoblast invasion and fetal/placental weight in the SH-B2R blockade and the isolated impact on blood pressure in the PR-B2R blockade indicate that bradykinin independently modulates systemic hemodynamics and the uteroplacental unit through cognate vascular and local B2R receptors.
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Affiliation(s)
- Gloria Valdés
- 1 Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
- 2 Departamento de Nefrología, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Stephanie Acuña
- 1 Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Daniela Schneider
- 1 Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Rita Ortíz
- 1 Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Oslando Padilla
- 3 Departamento de Salud Pública, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
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Morrison JL, Botting KJ, Darby JRT, David AL, Dyson RM, Gatford KL, Gray C, Herrera EA, Hirst JJ, Kim B, Kind KL, Krause BJ, Matthews SG, Palliser HK, Regnault TRH, Richardson BS, Sasaki A, Thompson LP, Berry MJ. Guinea pig models for translation of the developmental origins of health and disease hypothesis into the clinic. J Physiol 2018; 596:5535-5569. [PMID: 29633280 PMCID: PMC6265540 DOI: 10.1113/jp274948] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/19/2018] [Indexed: 12/12/2022] Open
Abstract
Over 30 years ago Professor David Barker first proposed the theory that events in early life could explain an individual's risk of non-communicable disease in later life: the developmental origins of health and disease (DOHaD) hypothesis. During the 1990s the validity of the DOHaD hypothesis was extensively tested in a number of human populations and the mechanisms underpinning it characterised in a range of experimental animal models. Over the past decade, researchers have sought to use this mechanistic understanding of DOHaD to develop therapeutic interventions during pregnancy and early life to improve adult health. A variety of animal models have been used to develop and evaluate interventions, each with strengths and limitations. It is becoming apparent that effective translational research requires that the animal paradigm selected mirrors the tempo of human fetal growth and development as closely as possible so that the effect of a perinatal insult and/or therapeutic intervention can be fully assessed. The guinea pig is one such animal model that over the past two decades has demonstrated itself to be a very useful platform for these important reproductive studies. This review highlights similarities in the in utero development between humans and guinea pigs, the strengths and limitations of the guinea pig as an experimental model of DOHaD and the guinea pig's potential to enhance clinical therapeutic innovation to improve human health.
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Affiliation(s)
- Janna L. Morrison
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Kimberley J. Botting
- Department of Physiology, Development and NeuroscienceUniversity of CambridgeCambridgeUK
| | - Jack R. T. Darby
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Anna L. David
- Research Department of Maternal Fetal Medicine, Institute for Women's HealthUniversity College LondonLondonUK
| | - Rebecca M. Dyson
- Department of Paediatrics & Child Health and Centre for Translational PhysiologyUniversity of OtagoWellingtonNew Zealand
| | - Kathryn L. Gatford
- Robinson Research Institute and Adelaide Medical SchoolUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Clint Gray
- Department of Paediatrics & Child Health and Centre for Translational PhysiologyUniversity of OtagoWellingtonNew Zealand
| | - Emilio A. Herrera
- Pathophysiology Program, Biomedical Sciences Institute (ICBM), Faculty of MedicineUniversity of ChileSantiagoChile
| | - Jonathan J. Hirst
- Mothers and Babies Research Centre, Hunter Medical Research Institute, School of Biomedical Sciences and PharmacyUniversity of NewcastleCallaghanNew South WalesAustralia
| | - Bona Kim
- Department of PhysiologyUniversity of TorontoTorontoOntarioCanada
| | - Karen L. Kind
- School of Animal and Veterinary SciencesUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Bernardo J. Krause
- Division of Paediatrics, Faculty of MedicinePontificia Universidad Católica de ChileSantiagoChile
| | | | - Hannah K. Palliser
- Mothers and Babies Research Centre, Hunter Medical Research Institute, School of Biomedical Sciences and PharmacyUniversity of NewcastleCallaghanNew South WalesAustralia
| | - Timothy R. H. Regnault
- Departments of Obstetrics and Gynaecology, Physiology and PharmacologyWestern University, and Children's Health Research Institute and Lawson Health Research InstituteLondonOntarioCanada
| | - Bryan S. Richardson
- Departments of Obstetrics and Gynaecology, Physiology and PharmacologyWestern University, and Children's Health Research Institute and Lawson Health Research InstituteLondonOntarioCanada
| | - Aya Sasaki
- Department of PhysiologyUniversity of TorontoTorontoOntarioCanada
| | - Loren P. Thompson
- Department of Obstetrics, Gynecology, and Reproductive SciencesUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Mary J. Berry
- Department of Paediatrics & Child Health and Centre for Translational PhysiologyUniversity of OtagoWellingtonNew Zealand
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Hensel ME, Arenas-Gamboa AM. A Neglected Animal Model for a Neglected Disease: Guinea Pigs and the Search for an Improved Animal Model for Human Brucellosis. Front Microbiol 2018; 9:2593. [PMID: 30429834 PMCID: PMC6220108 DOI: 10.3389/fmicb.2018.02593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 10/11/2018] [Indexed: 01/18/2023] Open
Abstract
Brucellosis is a bacterial disease caused by species of the Brucella genus and affects a wide variety of domestic and wildlife species and is also an important zoonosis. The global burden of disease is difficult to assess but Brucella spp. have a worldwide distribution and are endemic in the Middle East, Africa, South America, and Asia. The clinical signs of fever and malaise are non-specific, and the available serological diagnostic tests lack a high degree specificity in endemic regions compared to other important public health diseases such as malaria. A better understanding of the pathogenesis of brucellosis through discoveries in animal models could lead to improved diagnostics and potentially a vaccine for human use. Mouse models have played an important role in elucidating the pathogenesis but do not replicate key features of the disease such as fever. Guinea pigs were instrumental in exploring the pathogenesis of brucellosis in the early nineteenth century and could offer an improvement on the mouse model as a model for human brucellosis.
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Affiliation(s)
- Martha E Hensel
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Angela M Arenas-Gamboa
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
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11
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Camm EJ, Botting KJ, Sferruzzi-Perri AN. Near to One's Heart: The Intimate Relationship Between the Placenta and Fetal Heart. Front Physiol 2018; 9:629. [PMID: 29997513 PMCID: PMC6029139 DOI: 10.3389/fphys.2018.00629] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/09/2018] [Indexed: 01/19/2023] Open
Abstract
The development of the fetal heart is exquisitely controlled by a multitude of factors, ranging from humoral to mechanical forces. The gatekeeper regulating many of these factors is the placenta, an external fetal organ. As such, resistance within the placental vascular bed has a direct influence on the fetal circulation and therefore, the developing heart. In addition, the placenta serves as the interface between the mother and fetus, controlling substrate exchange and release of hormones into both circulations. The intricate relationship between the placenta and fetal heart is appreciated in instances of clinical placental pathology. Abnormal umbilical cord insertion is associated with congenital heart defects. Likewise, twin-to-twin transfusion syndrome, where monochorionic twins have unequal sharing of their placenta due to inter-twin vascular anastomoses, can result in cardiac remodeling and dysfunction in both fetuses. Moreover, epidemiological studies have suggested a link between placental phenotypic traits and increased risk of cardiovascular disease in adult life. To date, the mechanistic basis of the relationships between the placenta, fetal heart development and later risk of cardiac dysfunction have not been fully elucidated. However, studies using environmental exposures and gene manipulations in experimental animals are providing insights into the pathways involved. Likewise, surgical instrumentation of the maternal and fetal circulations in large animal species has enabled the manipulation of specific humoral and mechanical factors to investigate their roles in fetal cardiac development. This review will focus on such studies and what is known to date about the link between the placenta and heart development.
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Affiliation(s)
- Emily J Camm
- Department of Physiology, Development and Neuroscience and Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom
| | - Kimberley J Botting
- Department of Physiology, Development and Neuroscience and Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom
| | - Amanda N Sferruzzi-Perri
- Department of Physiology, Development and Neuroscience and Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom
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Martinez-Fierro ML, Hernández-Delgadillo GP, Flores-Morales V, Cardenas-Vargas E, Mercado-Reyes M, Rodriguez-Sanchez IP, Delgado-Enciso I, Galván-Tejada CE, Galván-Tejada JI, Celaya-Padilla JM, Garza-Veloz I. Current model systems for the study of preeclampsia. Exp Biol Med (Maywood) 2018; 243:576-585. [PMID: 29415560 DOI: 10.1177/1535370218755690] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Preeclampsia (PE) is a pregnancy complex disease, distinguished by high blood pressure and proteinuria, diagnosed after the 20th gestation week. Depending on the values of blood pressure, urine protein concentrations, symptomatology, and onset of disease there is a wide range of phenotypes, from mild forms developing predominantly at the end of pregnancy to severe forms developing in the early stage of pregnancy. In the worst cases severe forms of PE could lead to systemic endothelial dysfunction, eclampsia, and maternal and/or fetal death. Worldwide the fetal morbidity and mortality related to PE is calculated to be around 8% of the total pregnancies. PE still being an enigma regarding its etiology and pathophysiology, in general a deficient trophoblast invasion during placentation at first stage of pregnancy, in combination with maternal conditions are accepted as a cause of endothelial dysfunction, inflammatory alterations and appearance of symptoms. Depending on the PE multifactorial origin, several in vitro, in vivo, and in silico models have been used to evaluate the PE pathophysiology as well as to identify or test biomarkers predicting, diagnosing or prognosing the syndrome. This review focuses on the most common models used for the study of PE, including those related to placental development, abnormal trophoblast invasion, uteroplacental ischemia, angiogenesis, oxygen deregulation, and immune response to maternal-fetal interactions. The advances in mathematical and computational modeling of metabolic network behavior, gene prioritization, the protein-protein interaction network, the genetics of PE, and the PE prediction/classification are discussed. Finally, the potential of these models to enable understanding of PE pathogenesis and to evaluate new preventative and therapeutic approaches in the management of PE are also highlighted. Impact statement This review is important to the field of preeclampsia (PE), because it provides a description of the principal in vitro, in vivo, and in silico models developed for the study of its principal aspects, and to test emerging therapies or biomarkers predicting the syndrome before their evaluation in clinical trials. Despite the current advance, the field still lacking of new methods and original modeling approaches that leads to new knowledge about pathophysiology. The part of in silico models described in this review has not been considered in the previous reports.
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Affiliation(s)
- M L Martinez-Fierro
- 1 Molecular Medicine Laboratory, Unidad Académica de Medicina Humana y Ciencias de la Salud, Universidad Autónoma de Zacatecas, 98160 Zacatecas, México.,2 Posgrado en Ingeniería y Tecnología Aplicada, Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, 98000 Zacatecas, México
| | - G P Hernández-Delgadillo
- 3 Laboratorio de Investigación en Farmacología, 27779 Universidad Autónoma de Zacatecas , 98160 Zacatecas, México
| | - V Flores-Morales
- 4 Laboratorio de Síntesis Asimétrica y Bioenergética (LSAyB), 27779 Universidad Autónoma de Zacatecas , 98160 Zacatecas, México
| | - E Cardenas-Vargas
- 1 Molecular Medicine Laboratory, Unidad Académica de Medicina Humana y Ciencias de la Salud, Universidad Autónoma de Zacatecas, 98160 Zacatecas, México.,5 Hospital General Zacatecas "Luz Gonzalez Cosio", Secretaria de Salud de Zacatecas, 98160 Zacatecas, México
| | - M Mercado-Reyes
- 6 Laboratorio de Biología de la Conservación, Unidad Académica de Ciencias Biológicas, 27779 Universidad Autónoma de Zacatecas , 98060 Zacatecas, México
| | - I P Rodriguez-Sanchez
- 7 Departamento de Génetica, Facultad de Medicina, Universidad Autonoma de Nuevo Leon, 64460 Monterrey, México
| | - I Delgado-Enciso
- 8 Faculty of Medicine, Universidad de Colima, 28040 Colima, Mexico.,9 State Cancer Institute, Health Secretary of Colima, 28060 Colima, Mexico
| | - C E Galván-Tejada
- 10 Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, 98000 Zacatecas, México
| | - J I Galván-Tejada
- 10 Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, 98000 Zacatecas, México
| | - J M Celaya-Padilla
- 10 Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, 98000 Zacatecas, México.,11 CONACYT - Universidad Autónoma de Zacatecas, 98000 Zacatecas, México
| | - I Garza-Veloz
- 1 Molecular Medicine Laboratory, Unidad Académica de Medicina Humana y Ciencias de la Salud, Universidad Autónoma de Zacatecas, 98160 Zacatecas, México.,2 Posgrado en Ingeniería y Tecnología Aplicada, Unidad Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, 98000 Zacatecas, México
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Torres-Vargas J, Jiménez-Coello M, Guzmán-Marín E, Acosta-Viana KY, Yadon ZE, Gutiérrez-Blanco E, Guillermo-Cordero JL, Garg NJ, Ortega-Pacheco A. Quantitative and histological assessment of maternal-fetal transmission of Trypanosoma cruzi in guinea pigs: An experimental model of congenital Chagas disease. PLoS Negl Trop Dis 2018; 12:e0006222. [PMID: 29364882 PMCID: PMC5798842 DOI: 10.1371/journal.pntd.0006222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/05/2018] [Accepted: 01/09/2018] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE We evaluated the effect of Trypanosoma cruzi infection on fertility, gestation outcome, and maternal-fetal transmission in guinea pigs (Cavia porcellus). METHODS Animals were infected with T. cruzi H4 strain (TcI lineage) before gestation (IBG) or during gestation (IDG). Tissue and sera samples of dams and fetuses were obtained near parturition. RESULTS All IBG and IDG dams were seropositive by two tests, and exhibited blood parasite load of 1.62±2.2 and 50.1±62 parasites/μl, respectively, by quantitative PCR. Histological evaluation showed muscle fiber degeneration and cellular necrosis in all infected dams. Parasite nests were not detected in infected dams by histology. However, qPCR analysis detected parasites-eq/g heart tissue of 153±104.7 and 169.3±129.4 in IBG and IDG dams, respectively. All fetuses of infected dams were positive for anti-parasite IgG antibodies and tissue parasites by qPCR, but presented a low level of tissue inflammatory infiltrate. Fetuses of IDG (vs. IBG) dams exhibited higher degree of muscle fiber degeneration and cellular necrosis in the heart and skeletal tissues. The placental tissue exhibited no inflammatory lesions and amastigote nests, yet parasites-eq/g of 381.2±34.3 and 79.2±84.9 were detected in IDG and IBG placentas, respectively. Fetal development was compromised, and evidenced by a decline in weight, crow-rump length, and abdominal width in both groups. CONCLUSIONS T. cruzi TcI has a high capacity of congenital transmission even when it was inoculated at a very low dose before or during gestation. Tissue lesions, parasite load, and fetal under development provide evidence for high virulence of the parasite during pregnancy. Despite finding of high parasite burden by qPCR, placentas were protected from cellular damage. Our studies offer an experimental model to study the efficacy of vaccines and drugs against congenital transmission of T. cruzi. These results also call for T. cruzi screening in pregnant women and adequate follow up of the newborns in endemic areas.
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Affiliation(s)
- Jatziri Torres-Vargas
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - Matilde Jiménez-Coello
- C.A. Biomedicina de Enfermedades Infecciosas y Parasitarias, Centro de Investigaciones Regionales "Dr. Hideyo Noguchi", Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - Eugenia Guzmán-Marín
- C.A. Biomedicina de Enfermedades Infecciosas y Parasitarias, Centro de Investigaciones Regionales "Dr. Hideyo Noguchi", Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - Karla Y. Acosta-Viana
- C.A. Biomedicina de Enfermedades Infecciosas y Parasitarias, Centro de Investigaciones Regionales "Dr. Hideyo Noguchi", Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - Zaida E. Yadon
- Health Surveillance, Disease Prevention and Control, Pan American Health Organization, Duque de Caxias, Rio de Janeiro, Brazil
| | - Eduardo Gutiérrez-Blanco
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - José Leonardo Guillermo-Cordero
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - Nisha J. Garg
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
- * E-mail: (NJG); (AOP)
| | - Antonio Ortega-Pacheco
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
- * E-mail: (NJG); (AOP)
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14
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Bierle CJ, Fernández-Alarcón C, Hernandez-Alvarado N, Zabeli JC, Janus BC, Putri DS, Schleiss MR. Assessing Zika virus replication and the development of Zika-specific antibodies after a mid-gestation viral challenge in guinea pigs. PLoS One 2017; 12:e0187720. [PMID: 29099873 PMCID: PMC5669436 DOI: 10.1371/journal.pone.0187720] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 10/24/2017] [Indexed: 11/18/2022] Open
Abstract
Primary Zika virus (ZIKV) infections that occur during pregnancy can cause spontaneous abortion and profoundly disrupt fetal development. While the full range of developmental abnormalities associated with congenital Zika syndrome is not yet known, severe cases of the syndrome can present with microcephaly, extensive neurologic and ocular damage, and pronounced joint malformations. Animal models that accurately recapitulate congenital Zika syndrome are urgently needed for vaccine development and for the study of ZIKV pathogenesis. As guinea pigs have successfully been used to model transplacental infections by cytomegalovirus, syphilis, and Listeria monocytogenes, we sought to test whether ZIKV could productively infect guinea pigs and whether viral transmission with attendant fetal pathology would occur after a mid-gestation viral challenge. We found that guinea pig cells supported ZIKV replication in vitro. Experimental infection of non-pregnant animals did not result in overt disease but low-level, detectable viremia was observed. When pregnant guinea pigs were challenged with ZIKV at between 18 and 21 days gestational age, ZIKV was not detected in maternal or pup blood, plasma, or tissues and no significant differences in maternal weight gain or pup size were observed following challenge. Nonetheless, a robust antibody response against ZIKV was detected in both the pups and dams. These results suggest that, while guinea pigs can model aspects of the immune response to ZIKV infection during pregnancy, naturally circulating ZIKV strains are not pathogenic during the pregnancy of immunocompetent guinea pigs and do not interfere with normal pup development.
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Affiliation(s)
- Craig J. Bierle
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Claudia Fernández-Alarcón
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Nelmary Hernandez-Alvarado
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Jason C. Zabeli
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Bradley C. Janus
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Dira S. Putri
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Mark R. Schleiss
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, United States of America
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Coleman S, Choi KY, McGregor A. Cytomegalovirus UL128 homolog mutants that form a pentameric complex produce virus with impaired epithelial and trophoblast cell tropism and altered pathogenicity in the guinea pig. Virology 2017. [PMID: 28651121 DOI: 10.1016/j.virol.2017.06.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Guinea pig cytomegalovirus (GPCMV) encodes a homolog pentameric complex (PC) for specific cell tropism and congenital infection. In human cytomegalovirus, the PC is an important antibody neutralizing target and GPCMV studies will aid in the development of intervention strategies. Deletion mutants of the C-terminal domains of unique PC proteins (UL128, UL130 and UL131 homologs) were unable to form a PC in separate transient expression assays. Minor modifications to the UL128 homolog (GP129) C-terminal domain enabled PC formation but viruses encoding these mutants had altered tropism to renal and placental trophoblast cells. Mutation of the presumptive CC chemokine motif encoded by GP129 was investigated by alanine substitution of the CC motif (codons 26-27) and cysteines (codons 47 and 62). GP129 chemokine mutants formed PC but GP129 chemokine mutant viruses had reduced epitropism. A GP129 chemokine mutant virus pathogenicity study demonstrated reduced viral load to target organs but highly extended viremia.
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Affiliation(s)
- Stewart Coleman
- Department of Microbial Pathogenesis & Immunology, Texas A&M University, Health Science Center, College of Medicine, College Station, TX, United States
| | - K Yeon Choi
- Department of Microbial Pathogenesis & Immunology, Texas A&M University, Health Science Center, College of Medicine, College Station, TX, United States
| | - Alistair McGregor
- Department of Microbial Pathogenesis & Immunology, Texas A&M University, Health Science Center, College of Medicine, College Station, TX, United States.
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16
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da Anunciação ARA, Mess AM, Orechio D, Aguiar BA, Favaron PO, Miglino MA. Extracellular matrix in epitheliochorial, endotheliochorial and haemochorial placentation and its potential application for regenerative medicine. Reprod Domest Anim 2016; 52:3-15. [DOI: 10.1111/rda.12868] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/10/2016] [Indexed: 12/20/2022]
Affiliation(s)
- ARA da Anunciação
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
| | - AM Mess
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
| | - D Orechio
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
| | - BA Aguiar
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
| | - PO Favaron
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
| | - MA Miglino
- School of Veterinary Medicine and Animal Science; University of Sao Paulo; Sao Paulo Brazil
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Thompson LP, Pence L, Pinkas G, Song H, Telugu BP. Placental Hypoxia During Early Pregnancy Causes Maternal Hypertension and Placental Insufficiency in the Hypoxic Guinea Pig Model. Biol Reprod 2016; 95:128. [PMID: 27806942 PMCID: PMC5315426 DOI: 10.1095/biolreprod.116.142273] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 06/21/2016] [Accepted: 10/19/2016] [Indexed: 12/25/2022] Open
Abstract
Chronic placental hypoxia is one of the root causes of placental insufficiencies that result in pre-eclampsia and maternal hypertension. Chronic hypoxia causes disruption of trophoblast (TB) development, invasion into maternal decidua, and remodeling of maternal spiral arteries. The pregnant guinea pig shares several characteristics with humans such as hemomonochorial placenta, villous subplacenta, deep TB invasion, and remodeling of maternal arteries, and is an ideal animal model to study placental development. We hypothesized that chronic placental hypoxia of the pregnant guinea pig inhibits TB invasion and alters spiral artery remodeling. Time-mated pregnant guinea pigs were exposed to either normoxia (NMX) or three levels of hypoxia (HPX: 16%, 12%, or 10.5% O2) from 20 day gestation until midterm (39-40 days) or term (60-65 days). At term, HPX (10.5% O2) increased maternal arterial blood pressure (HPX 57.9 ± 2.3 vs. NMX 40.4 ± 2.3, P < 0.001), decreased fetal weight by 16.1% (P < 0.05), and increased both absolute and relative placenta weights by 10.1% and 31.8%, respectively (P < 0.05). At midterm, there was a significant increase in TB proliferation in HPX placentas as confirmed by increased PCNA and KRT7 staining and elevated ESX1 (TB marker) gene expression (P < 0.05). Additionally, quantitative image analysis revealed decreased invasion of maternal blood vessels by TB cells. In summary, this animal model of placental HPX identifies several aspects of abnormal placental development, including increased TB proliferation and decreased migration and invasion of TBs into the spiral arteries, the consequences of which are associated with maternal hypertension and fetal growth restriction.
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Affiliation(s)
- Loren P Thompson
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland, Baltimore, Maryland
- University of Maryland School of Medicine, Baltimore, Maryland
| | - Laramie Pence
- Animal Biosciences and Biotechnology Laboratory, USDA-ARS, Beltsville, Maryland
- Animal and Avian Science, University of Maryland, College Park, Maryland
| | - Gerald Pinkas
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland, Baltimore, Maryland
- University of Maryland School of Medicine, Baltimore, Maryland
| | - Hong Song
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland, Baltimore, Maryland
- University of Maryland School of Medicine, Baltimore, Maryland
| | - Bhanu P Telugu
- Animal Biosciences and Biotechnology Laboratory, USDA-ARS, Beltsville, Maryland
- Animal and Avian Science, University of Maryland, College Park, Maryland
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18
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A Homolog Pentameric Complex Dictates Viral Epithelial Tropism, Pathogenicity and Congenital Infection Rate in Guinea Pig Cytomegalovirus. PLoS Pathog 2016; 12:e1005755. [PMID: 27387220 PMCID: PMC4936736 DOI: 10.1371/journal.ppat.1005755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/17/2016] [Indexed: 11/19/2022] Open
Abstract
In human cytomegalovirus (HCMV), tropism to epithelial and endothelial cells is dependent upon a pentameric complex (PC). Given the structure of the placenta, the PC is potentially an important neutralizing antibody target antigen against congenital infection. The guinea pig is the only small animal model for congenital CMV. Guinea pig cytomegalovirus (GPCMV) potentially encodes a UL128-131 HCMV PC homolog locus (GP128-GP133). In transient expression studies, GPCMV gH and gL glycoproteins interacted with UL128, UL130 and UL131 homolog proteins (designated GP129 and GP131 and GP133 respectively) to form PC or subcomplexes which were determined by immunoprecipitation reactions directed to gH or gL. A natural GP129 C-terminal deletion mutant (aa 107-179) and a chimeric HCMV UL128 C-terminal domain swap GP129 mutant failed to form PC with other components. GPCMV infection of a newly established guinea pig epithelial cell line required a complete PC and a GP129 mutant virus lacked epithelial tropism and was attenuated in the guinea pig for pathogenicity and had a low congenital transmission rate. Individual knockout of GP131 or 133 genes resulted in loss of viral epithelial tropism. A GP128 mutant virus retained epithelial tropism and GP128 was determined not to be a PC component. A series of GPCMV mutants demonstrated that gO was not strictly essential for epithelial infection whereas gB and the PC were essential. Ectopic expression of a GP129 cDNA in a GP129 mutant virus restored epithelial tropism, pathogenicity and congenital infection. Overall, GPCMV forms a PC similar to HCMV which enables evaluation of PC based vaccine strategies in the guinea pig model.
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Carter AM, Enders AC, Pijnenborg R. The role of invasive trophoblast in implantation and placentation of primates. Philos Trans R Soc Lond B Biol Sci 2016; 370:20140070. [PMID: 25602074 DOI: 10.1098/rstb.2014.0070] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We here review the evolution of invasive placentation in primates towards the deep penetration of the endometrium and its arteries in hominoids. The strepsirrhine primates (lemurs and lorises) have non-invasive, epitheliochorial placentation, although this is thought to be derived from a more invasive type. In haplorhine primates, there is differentiation of trophoblast at the blastocyst stage into syncytial and cellular trophoblast. Implantation involves syncytiotrophoblast that first removes the uterine epithelium then consolidates at the basal lamina before continuing into the stroma. In later stages of pregnancy, especially in Old World monkeys and apes, cytotrophoblast plays a greater role in the invasive process. Columns of trophoblast cells advance to the base of the implantation site where they spread out to form a cytotrophoblastic shell. In addition, cytotrophoblasts advance into the lumen of the spiral arteries. They are responsible for remodelling these vessels to form wide, low-resistance conduits. In human and great apes, there is additional invasion of the endometrium and its vessels by trophoblasts originating from the base of the anchoring villi. Deep trophoblast invasion that extends remodelling of the spiral arteries to segments in the inner myometrium evolved in the common ancestor of gorilla, chimp and human.
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Affiliation(s)
- Anthony M Carter
- Department of Cardiovascular and Renal Research, University of Southern Denmark, 5000 Odense, Denmark
| | - Allen C Enders
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California Davis, Davis, CA 95616, USA
| | - Robert Pijnenborg
- Department of Development and Regeneration, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
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Abstract
Preterm birth is the single leading cause of mortality for neonates and children less than 5 years of age. Compared to other childhood diseases, such as infections, less progress in prevention of prematurity has been made. In large part, the continued high burden of prematurity results from the limited understanding of the mechanisms controlling normal birth timing in humans, and how individual genetic variation and environmental exposures disrupt these mechanisms to cause preterm birth. In this review, we summarize the outcomes and limitations from studies in model organisms for birth timing in humans, the evidence that genetic factors contribute to birth timing and risk for preterm birth, and recent genetic and genomic studies in women and infants that implicate specific genes and pathways. We conclude with discussing areas of potential high impact in understanding human parturition and preterm birth in the future.
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Affiliation(s)
- Nagendra K Monangi
- Division of Neonatology, Perinatal Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 7009, Cincinnati, OH 45229; Center for Prevention of Preterm Birth, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Heather M Brockway
- Center for Prevention of Preterm Birth, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Melissa House
- Division of Neonatology, Perinatal Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 7009, Cincinnati, OH 45229
| | - Ge Zhang
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Louis J Muglia
- Division of Neonatology, Perinatal Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 7009, Cincinnati, OH 45229; Center for Prevention of Preterm Birth, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
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21
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Standen P, Sferruzzi-Perri AN, Taylor R, Heinemann G, Zhang JV, Highet AR, Pringle KG, Owens JA, Kumarasamy V, Lumbers ER, Roberts CT. Maternal insulin-like growth factor 1 and 2 differentially affect the renin-angiotensin system during pregnancy in the guinea pig. Growth Horm IGF Res 2015; 25:141-147. [PMID: 25748140 DOI: 10.1016/j.ghir.2015.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 01/06/2015] [Accepted: 02/13/2015] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Insulin-like growth factors (IGFs) are known to interact with the renin-angiotensin system (RAS). We previously demonstrated that administration of IGF1 to guinea pigs in early to mid pregnancy promotes placental function and fetal growth in mid to late gestation. Early administration of IGF2 had sustained, but not acute, effects on these parameters and also on placental structural differentiation. Here, we aimed to determine whether the IGFs interact with the placental RAS in early to mid gestation to modulate placental development and increase fetal growth and survival, and if IGF2 binding the IGF2R is implicated in the sustained effects of IGF2 treatment. DESIGN At day 20 of pregnancy, guinea pigs were infused with 1m g/kg/day of IGF1, IGF2, (Leu27)IGF2 or vehicle for 18days and sacrificed on either day 62 (late pregnancy) or during the infusion period on day 35 (early-mid pregnancy). Placental structure at day 35 was analyzed using morphometric technique and expression of RAS genes in the placenta and placental and plasma renin activity were measured at both time points. RESULTS Compared with vehicle at day 35 of gestation, IGF1 infusion reduced the total midsagittal cross-sectional area of the placenta (-17%, p = 0.02) and the labyrinth area (-22%, p = 0.014) but did not alter the labyrinth volume nor labyrinth:interlobium ratios. IGF2 treatment did not affect placental structure. IGF1 did not alter placental mRNA for any of the RAS genes quantified at day 35 (AGTR1, ACE, AGT, TGFB1) but increased TGFB1 expression by more than 16-fold (p = 0.005) at day 62. IGF2 increased placental expression of AGTR1 (+88%, p = 0.03) and decreased AGT (-73%, p = 0.01) compared with the vehicle-treated group at day 35, and both IGF2 and (Leu27)IGF2 increased expression of TGFB1 at day 62 by 9-fold (p = 0.016) and 6-fold (p = 0.019) respectively. Both IGFs increased the ratio of active:total placental renin protein (+22% p = 0.026 p = 0.038) compared to vehicle compared to vehicle at day 35 but not 62. At day 62, IGF2-treated mothers showed a marked increase in total plasma renin (+495%) and active renin (+359%) compared to vehicle but decreased the ratio of active to total renin by 41% (p = 0.042). (Leu27)IGF2-treated animals had higher levels of placental active renin (+73%, p = 0.001) and total renin (+71%, p = 0.001) compared with the vehicle control. CONCLUSIONS The data obtained in the current study suggest the potential for alternate roles for the induction of the RAS after IGF treatment. IGF1 and 2 treatments increase the activation of prorenin to renin in the placenta, possibly due to increased protease activity. In addition, IGF2 treatment in early pregnancy may enhance the maternal adaptation to pregnancy through stimulation of renin in the kidney. The sustained effects on placental differentiation and function after IGF2 treatment suggest therapeutic potential for exogenous administration of IGFs in improving pregnancy outcomes.
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Affiliation(s)
- Prue Standen
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Amanda N Sferruzzi-Perri
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Robyn Taylor
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Gary Heinemann
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Jamie V Zhang
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Amanda R Highet
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Kirsty G Pringle
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia; School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute, University of Newcastle, New South Wales, Australia
| | - Julie A Owens
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Vasumathy Kumarasamy
- School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute, University of Newcastle, New South Wales, Australia
| | - Eugenie R Lumbers
- School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute, University of Newcastle, New South Wales, Australia; Department of Physiology and Pharmacology, School of Medical Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Claire T Roberts
- School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia.
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Placental Evolution within the Supraordinal Clades of Eutheria with the Perspective of Alternative Animal Models for Human Placentation. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/639274] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Here a survey of placental evolution is conducted. Placentation is a key factor for the evolution of placental mammals that had evolved an astonishing diversity. As a temporary organ that does not allow easy access, it is still not well understood. The lack of data also is a restriction for better understanding of placental development, structure, and function in the human. Animal models are essential, because experimental access to the human placenta is naturally restricted. However, there is not a single ideal model that is entirely similar to humans. It is particularly important to establish other models than the mouse, which is characterised by a short gestation period and poorly developed neonates that may provide insights only for early human pregnancy. In conclusion, current evolutionary studies have contributed essentially to providing a pool of experimental models for recent and future approaches that may also meet the requirements of a long gestation period and advanced developmental status of the newborn in the human. Suitability and limitations of taxa as alternative animal models are discussed. However, further investigations especially in wildlife taxa should be conducted in order to learn more about the full evolutionary plasticity of the placenta system.
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Schleiss MR. Developing a Vaccine against Congenital Cytomegalovirus (CMV) Infection: What Have We Learned from Animal Models? Where Should We Go Next? Future Virol 2013; 8:1161-1182. [PMID: 24523827 DOI: 10.2217/fvl.13.106] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Congenital human cytomegalovirus (HCMV) infection can lead to long-term neurodevelopmental sequelae, including mental retardation and sensorineural hearing loss. Unfortunately, CMVs are highly adapted to their specific species, precluding the evaluation of HCMV vaccines in animal models prior to clinical trials. Several species-specific CMVs have been characterized and developed in models of pathogenesis and vaccine-mediated protection against disease. These include the murine CMV (MCMV), the porcine CMV (PCMV), the rhesus macaque CMV (RhCMV), the rat CMV (RCMV), and the guinea pig CMV (GPCMV). Because of the propensity of the GPCMV to cross the placenta, infecting the fetus in utero, it has emerged as a model of particular interest in studying vaccine-mediated protection of the fetus. In this paper, a review of these various models, with particular emphasis on the value of the model in the testing and evaluation of vaccines against congenital CMV, is provided. Recent exciting developments and advances in these various models are summarized, and recommendations offered for high-priority areas for future study.
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Affiliation(s)
- Mark R Schleiss
- University of Minnesota Medical School Center for Infectious Diseases and Microbiology Translational Research Department of Pediatrics Division of Pediatric Infectious Diseases and Immunology 2001 6 Street SE Minneapolis, MN 55455-3007
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Vasconcelos BG, Favaron PO, Miglino MA, Mess AM. Development and morphology of the inverted yolk sac in the guinea pig (Cavia porcellus). Theriogenology 2013; 80:636-41. [DOI: 10.1016/j.theriogenology.2013.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 06/05/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
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Bosco C, Díaz E, Gutiérrez R, González J, Pérez J. Ganglionar nervous cells and telocytes in the pancreas of Octodon degus: extra and intrapancreatic ganglionar cells and telocytes in the degus. Auton Neurosci 2013; 177:224-30. [PMID: 23707239 DOI: 10.1016/j.autneu.2013.05.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 05/02/2013] [Accepted: 05/04/2013] [Indexed: 11/26/2022]
Abstract
This study shows for the first time the presence of intra and extrapancreatic ganglionar neurons and telocytes in Octodon degus such as those described in human and guinea pig pancreas. Pancreatic ganglionar neurons were identified by their histological characteristics as well as their positive immunostaining with mouse anti-human neuron specific enolase (NSE) antibody. Somatostatin secreting delta cells (D cells) in the islets of Langerhans were identified by positive immunostaining with rabbit antihuman polyclonal somatostatin antibody. Electron microscopy evidenced the presence of some unmyelinated axons in the interlobular spaces or septa, usually located adjacent to blood vessels and the exocrine epithelial ducts. The presence of telocytes with at least 2 telopodes was observed in the interlobular space, frequently in close spatial relationship with blood vessels and nerve endings. Telocytes were often observed in the vicinity or even in close proximity with both secretory acini and exocrine epithelial ducts and regulatory nerves and blood vessel apparatuses. A possible framework has been put forward within which such structures might contribute to elicit physiological responses in the pancreas. Further studies of synaptic interactions within and between pancreatic neuron cells are needed to help clarify the morphological results reported here. A broad overview of the field of neurogastroenterology with focus on the pancreas of O. degus related to the enteric nervous system (ENS) is provided in order to help design future studies on the connections of specific neurons forming pancreatic pathways, their neurotransmission processes and how disruption of these pathways may contribute to pancreatic disease.
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Affiliation(s)
- Cleofina Bosco
- Programa de Anatomía y Biología del Desarrollo, ICBM, Facultad de Medicina, Universidad de Chile, Chile.
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Carter AM, Mess AM. Conservation of placentation during the tertiary radiation of mammals in South America. J Morphol 2013; 274:557-69. [DOI: 10.1002/jmor.20120] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 11/19/2012] [Accepted: 11/30/2012] [Indexed: 11/10/2022]
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Valdés G, Corthorn J, Bharadwaj MS, Joyner J, Schneider D, Brosnihan KB. Utero-placental expression of angiotensin-(1-7) and ACE2 in the pregnant guinea-pig. Reprod Biol Endocrinol 2013; 11:5. [PMID: 23339712 PMCID: PMC3567991 DOI: 10.1186/1477-7827-11-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 01/14/2013] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND In humans, trophoblast invasion, vascular remodeling and placental development are critical to determine the fate of pregnancy. Since guinea-pigs (GP) and humans share common pregnancy features including extensive trophoblast invasion, transformation of the uterine spiral arteries and a haemomonochorial placenta, the GP animal model was deemed suitable to extend our knowledge on the spatio-temporal immunoreactive expression of the vasodilator arpeptide of the renin-angiotensin system, angiotensin-(1-7) [Ang-(1-7)] and its main generating enzyme, angiotensin converting enzyme 2 (ACE2). METHODS Utero-placental units were collected in days 15, 20, 40 and 60 of a 64-67 day long pregnancy in 25 Pirbright GP. Ang-(1-7) and ACE2 expression in utero-placental units were evaluated by immunohistochemistry. RESULTS Ang-(1-7) and ACE2 were detected in the endothelium and syncytiotrophoblast of the labyrinthine placenta, interlobium, subplacenta, giant cells, syncytial sprouts, syncytial streamers, and myometrium throughout pregnancy. In late pregnancy, perivascular or intramural trophoblasts in spiral and mesometrial arteries expressed both factors. Immunoreactive Ang-(1-7) and ACE2 were present in decidua and in the vascular smooth muscle of spiral, myometrial and mesometrial arteries, which also express kallikrein (Kal), the bradykinin receptor 2 (B2R), vascular endothelial growth factor (VEGF) and its type 2 receptor (KDR), but no endothelial nitric oxide synthase (eNOS). In addition, the signal of Ang-(1-7) and ACE2 was especially remarkable in giant cells, which also show Kal, B2R. eNOS, VEGF and KDR. CONCLUSIONS The spatio-temporal expression of Ang-(1-7) and ACE2 in GP, similar to that of humans, supports a relevant evolutionary conserved function of Ang-(1-7) and ACE2 in decidualization, trophoblast invasion, vascular remodeling and placental flow regulation, as well as the validity of the GP model to understand the local adaptations of pregnancy. It also integrates Ang-(1-7) to the utero-placental vasodilatory network. However, its antiangiogenic effect may counterbalance the proangiogenic activity of some of the other vasodilator components.
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Affiliation(s)
- Gloria Valdés
- Centro de Investigaciones Médicas y Departamento de Nefrología, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Jenny Corthorn
- Centro de Investigaciones Médicas y Departamento de Nefrología, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Manish S Bharadwaj
- Hypertension and Vascular Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - JaNae Joyner
- Hypertension and Vascular Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Daniela Schneider
- Centro de Investigaciones Médicas y Departamento de Nefrología, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - K Bridget Brosnihan
- Hypertension and Vascular Research Center, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Pennington KA, Schlitt JM, Jackson DL, Schulz LC, Schust DJ. Preeclampsia: multiple approaches for a multifactorial disease. Dis Model Mech 2012; 5:9-18. [PMID: 22228789 PMCID: PMC3255538 DOI: 10.1242/dmm.008516] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Preeclampsia is a pregnancy-specific disorder characterized by hypertension and excess protein excretion in the urine. It is an important cause of maternal and fetal morbidity and mortality worldwide. The disease is almost exclusive to humans and delivery of the pregnancy continues to be the only effective treatment. The disorder is probably multifactorial, although most cases of preeclampsia are characterized by abnormal maternal uterine vascular remodeling by fetally derived placental trophoblast cells. Numerous in vitro and animal models have been used to study aspects of preeclampsia, the most common being models of placental oxygen dysregulation, abnormal trophoblast invasion, inappropriate maternal vascular damage and anomalous maternal-fetal immune interactions. Investigations into the pathophysiology and treatment of preeclampsia continue to move the field forward, albeit at a frustratingly slow pace. There remains a pressing need for novel approaches, new disease models and innovative investigators to effectively tackle this complex and devastating disorder.
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Affiliation(s)
- Kathleen A Pennington
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, 500 North Keene Street, Columbia, MO 65201, USA
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Flamini M, Portiansky E, Favaron P, Martins D, Ambrósio C, Mess A, Miglino M, Barbeito C. Chorioallantoic and yolk sac placentation in the plains viscacha (Lagostomus maximus) – A caviomorph rodent with natural polyovulation. Placenta 2011; 32:963-8. [DOI: 10.1016/j.placenta.2011.09.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 08/03/2011] [Accepted: 09/04/2011] [Indexed: 10/17/2022]
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30
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Franco de Oliveira M, Favaron PO, Ambrósio CE, Miglino MA, Mess AM. Chorioallantoic and yolk sac placentation in Thrichomys laurentinus (Echimyidae) and the evolution of hystricognath rodents. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2011; 318:13-25. [DOI: 10.1002/jez.b.21428] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 06/09/2011] [Accepted: 06/14/2011] [Indexed: 11/06/2022]
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Vernochet C, Heidmann O, Dupressoir A, Cornelis G, Dessen P, Catzeflis F, Heidmann T. A syncytin-like endogenous retrovirus envelope gene of the guinea pig specifically expressed in the placenta junctional zone and conserved in Caviomorpha. Placenta 2011; 32:885-92. [PMID: 21893339 DOI: 10.1016/j.placenta.2011.08.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 08/08/2011] [Accepted: 08/14/2011] [Indexed: 12/11/2022]
Abstract
Syncytins are genes of retroviral origin that have been co-opted by mammalian hosts for a function in placentation. Two such genes have already been identified in simians, as well as two distinct, unrelated ones in Muridae and a fifth in the rabbit. Here we searched for similar genes in the guinea pig, which belongs to the Caviomorpha lineage within the Hystricognathi suborder of rodents and displays a placental structural organization with several characteristic features comparable to those of the human organ, including deep trophoblast invasion of maternal tissues. An in silico search for envelope (env) genes with full coding capacity identified a candidate gene that showed specific expression in the placenta, as revealed by RT-qPCR using RNAs from a large panel of tissues. This gene belongs to an endogenous retroviral element present at a single-copy in the guinea pig genome, still displaying a retroviral organization - with a degenerate gag and pol, but an intact env gene. In situ hybridization of guinea pig placenta sections demonstrated specific expression at the level of the invasive trophoblast-containing junctional zone, as observed in humans for syncytin-1 and consistent with a role in invasion of the maternal uterine tissues. The identified gene displays a conserved open reading frame in the Caviomorpha, consistent with an entry date >30 million years, and sequence analyses showed purifying selection of the gene. Conclusively, despite the absence of a demonstrated fusogenic activity, it is likely that the identified env gene - that we named syncytin-like env-Cav1 - exerts a physiological function possibly related to trophoblast invasion, in the course of caviomorph placentation.
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Affiliation(s)
- C Vernochet
- Unité des Rétrovirus Endogènes et Eléments Rétroïdes des Eucaryotes Supérieurs, UMR 8122 CNRS, Institut Gustave Roussy, 39, rue Camille Desmoulins, 94805 Villejuif, France
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Evolution and development of fetal membranes and placentation in amniote vertebrates. Respir Physiol Neurobiol 2011; 178:39-50. [DOI: 10.1016/j.resp.2011.03.029] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/29/2011] [Accepted: 03/29/2011] [Indexed: 01/20/2023]
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Valdés G, Corthorn J. Review: The angiogenic and vasodilatory utero-placental network. Placenta 2011; 32 Suppl 2:S170-5. [DOI: 10.1016/j.placenta.2011.01.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 12/31/2010] [Accepted: 01/11/2011] [Indexed: 01/23/2023]
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Alam SMK, Konno T, Rumi MAK, Dong Y, Weiner CP, Soares MJ. Prolactin family of the guinea pig, Cavia porcellus. Endocrinology 2010; 151:3918-28. [PMID: 20534723 PMCID: PMC2940522 DOI: 10.1210/en.2010-0239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Prolactin (PRL) is a multifunctional hormone with prominent roles in regulating growth and reproduction. The guinea pig (Cavia porcellus) has been extensively used in endocrine and reproduction research. Thus far, the PRL cDNA and protein have not been isolated from the guinea pig. In the present study, we used information derived from the public guinea pig genome database as a tool for identifying guinea pig PRL and PRL-related proteins. Guinea pig PRL exhibits prominent nucleotide and amino acid sequence differences when compared with PRLs of other eutherian mammals. In contrast, guinea pig GH is highly conserved. Expression of PRL and GH in the guinea pig is prominent in the anterior pituitary, similar to known expression patterns of PRL and GH for other species. Two additional guinea pig cDNAs were identified and termed PRL-related proteins (PRLRP1, PRLRP2). They exhibited a more distant relationship to PRL and their expression was restricted to the placenta. Recombinant guinea pig PRL protein was generated and shown to be biologically active in the PRL-responsive Nb2 lymphoma cell bioassay. In contrast, recombinant guinea pig PRLRP1 protein did not exhibit PRL-like bioactivity. In summary, we have developed a new set of research tools for investigating the biology of the PRL family in an important animal model, the guinea pig.
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Affiliation(s)
- S M Khorshed Alam
- Department of Pathology and Laboratory Medicine, Institute of Maternal-Fetal Biology, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
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Evolution and development of gas exchange structures in Mammalia: The placenta and the lung. Respir Physiol Neurobiol 2010; 173 Suppl:S74-82. [DOI: 10.1016/j.resp.2010.01.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 01/01/2010] [Accepted: 01/09/2010] [Indexed: 11/23/2022]
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Valdes G, Kaufmann P, Corthorn J, Erices R, Brosnihan KB, Joyner-Grantham J. Vasodilator factors in the systemic and local adaptations to pregnancy. Reprod Biol Endocrinol 2009; 7:79. [PMID: 19646248 PMCID: PMC2739214 DOI: 10.1186/1477-7827-7-79] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Accepted: 07/31/2009] [Indexed: 01/02/2023] Open
Abstract
We postulate that an orchestrated network composed of various vasodilatory systems participates in the systemic and local hemodynamic adaptations in pregnancy. The temporal patterns of increase in the circulating and urinary levels of five vasodilator factors/systems, prostacyclin, nitric oxide, kallikrein, angiotensin-(1-7) and VEGF, in normal pregnant women and animals, as well as the changes observed in preeclamptic pregnancies support their functional role in maintaining normotension by opposing the vasoconstrictor systems. In addition, the expression of these vasodilators in the different trophoblastic subtypes in various species supports their role in the transformation of the uterine arteries. Moreover, their expression in the fetal endothelium and in the syncytiotrophoblast in humans, rats and guinea-pigs, favour their participation in maintaining the uteroplacental circulation. The findings that sustain the functional associations of the various vasodilators, and their participation by endocrine, paracrine and autocrine regulation of the systemic and local vasoactive changes of pregnancy are abundant and compelling. However, further elucidation of the role of the various players is hampered by methodological problems. Among these difficulties is the complexity of the interactions between the different factors, the likelihood that experimental alterations induced in one system may be compensated by the other players of the network, and the possibility that data obtained by manipulating single factors in vitro or in animal studies may be difficult to translate to the human. In addition, the impossibility of sampling the uteroplacental interface along normal pregnancy precludes obtaining longitudinal profiles of the various players. Nevertheless, the possibility of improving maternal blood pressure regulation, trophoblast invasion and uteroplacental flow by enhancing vasodilation (e.g. L-arginine, NO donors, VEGF transfection) deserves unravelling the intricate association of vasoactive factors and the systemic and local adaptations to pregnancy.
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Affiliation(s)
- Gloria Valdes
- Centro Investigaciones Médicas y Departamento Nefrología, Escuela Medicina Pontificia Universidad Católica, Santiago, Chile
| | - Peter Kaufmann
- Department of Anatomy, School of Medicine, University of Technology, Aachen, Germany
| | - Jenny Corthorn
- Centro Investigaciones Médicas y Departamento Nefrología, Escuela Medicina Pontificia Universidad Católica, Santiago, Chile
| | - Rafaela Erices
- Centro Investigaciones Médicas y Departamento Nefrología, Escuela Medicina Pontificia Universidad Católica, Santiago, Chile
| | - K Bridget Brosnihan
- Hypertension and Vascular Research Center, Wake Forest University Health Sciences, Winston-Salem, USA
| | - JaNae Joyner-Grantham
- Hypertension and Vascular Research Center, Wake Forest University Health Sciences, Winston-Salem, USA
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Kanashiro C, Santos TC, Miglino MA, Mess AM, Carter AM. Growth and development of the placenta in the capybara (Hydrochaeris hydrochaeris). Reprod Biol Endocrinol 2009; 7:57. [PMID: 19493333 PMCID: PMC2702307 DOI: 10.1186/1477-7827-7-57] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Accepted: 06/03/2009] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The guinea pig is an attractive model for human pregnancy and placentation, mainly because of its haemomonochorial placental type, but is rather small in size. Therefore, to better understand the impact of body mass, we studied placental development in the capybara which has a body mass around 50 kg and a gestation period of around 150 days. We paid attention to the development of the lobulated arrangement of the placenta, the growth of the labyrinth in the course of gestation, the differentiation of the subplacenta, and the pattern of invasion by extraplacental trophoblast. METHODS Material was collected from six animals at pregnancy stages ranging from the late limb bud stage to mid gestation. Methods included latex casts, standard histology, immunohistochemistry for cytokeratin, vimentin, alpha-smooth muscle actin, and proliferating cell nuclear antigen as well as transmission electron microscopy. RESULTS At the limb bud stage, the placenta was a pad of trophoblast covered by a layer of mesoderm from which fetal vessels were beginning to penetrate at folds in the surface. By 70 days, the placenta comprised areas of labyrinth (lobes) separated by interlobular areas. Placental growth resulted predominantly from proliferation of cellular trophoblast situated in nests at the fetal side of the placenta and along internally directed projections on fetal mesenchyme. Additional proliferation was demonstrated for cellular trophoblast within the labyrinth.Already at the limb bud stage, there was a prominent subplacenta comprising cellular and syncytial trophoblast with mesenchyme and associated blood vessels. At 90 days, differentiation was complete and similar to that seen in other hystricognath rodents. Overlap of fetal vessels and maternal blood lacunae was confirmed by latex injection of the vessels. At all stages extraplacental trophoblast was associated with the maternal arterial supply and consisted of cellular trophoblast and syncytial streamers derived from the subplacenta. CONCLUSION All important characteristics of placental development and organization in the capybara resembled those found in smaller hystricognath rodents including the guinea pig. These features apparently do not dependent on body size. Clearly, placentation in hystricognaths adheres to an extraordinarily stable pattern suggesting they can be used interchangeably as models of human placenta.
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Affiliation(s)
- Claudia Kanashiro
- Department of Surgery, School of Veterinary Medicine, University of São Paulo, São Paulo, Brazil
| | - Tatiana C Santos
- Department of Animal Science, State University of Maringá, Paraná, Brazil
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine, University of São Paulo, São Paulo, Brazil
| | - Andrea M Mess
- Department of Research, Museum of Natural History, Leibniz-Community, Berlin, Germany
| | - Anthony M Carter
- Department of Physiology and Pharmacology, University of Southern Denmark, Odense, Denmark
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Bosco C, Buffet C. Immunohistochemical identification of the extravillous trophoblast during the placentation of the degu (Octodon degus). JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2008; 310:534-9. [DOI: 10.1002/jez.b.21221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Oliveira MF, Mess A, Ambrósio CE, Dantas CAG, Favaron PO, Miglino MA. Chorioallantoic placentation in Galea spixii (Rodentia, Caviomorpha, Caviidae). Reprod Biol Endocrinol 2008; 6:39. [PMID: 18771596 PMCID: PMC2543018 DOI: 10.1186/1477-7827-6-39] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2008] [Accepted: 09/04/2008] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Placentas of guinea pig-related rodents are appropriate animal models for human placentation because of their striking similarities to those of humans. To optimize the pool of potential models in this context, it is essential to identify the occurrence of characters in close relatives. METHODS In this study we first analyzed chorioallantoic placentation in the prea, Galea spixii, as one of the guinea pig's closest relatives. Material was collected from a breeding group at the University of Mossoró, Brazil, including 18 individuals covering an ontogenetic sequence from initial pregnancy to term. Placentas were investigated by means of histology, electron microscopy, immunohistochemistry (vimentin, alpha-smooth muscle actin, cytokeration) and proliferation activity (PCNA). RESULTS Placentation in Galea is primarily characterized by an apparent regionalization into labyrinth, trophospongium and subplacenta. It also has associated growing processes with clusters of proliferating trophoblast cells at the placental margin, internally directed projections and a second centre of proliferation in the labyrinth. Finally, the subplacenta, which is temporarily supplied in parallel by the maternal and fetal blood systems, served as the center of origin for trophoblast invasion. CONCLUSION Placentation in Galea reveals major parallels to the guinea pig and other caviomorphs with respect to the regionalization of the placenta, the associated growing processes, as well as trophoblast invasion. A principal difference compared to the guinea pig occurred in the blood supply of the subplacenta. Characteristics of the invasion and expanding processes indicate that Galea may serve as an additional animal model that is much smaller than the guinea pig and where the subplacenta partly has access to both maternal and fetal blood systems.
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Affiliation(s)
- Moacir F Oliveira
- Department of Animal Science, Universidade Federal Rural do Semi-Árido, Costa e Silva 59625-900, Caixa-Postal: 137, Mossoró, Rio Grande do Norte, Brazil
| | - Andrea Mess
- Museum of Natural History, Department of Research, Humboldt-University Berlin, Invalidenstr. 43, D-10115 Berlin, Germany
| | - Carlos E Ambrósio
- Department of Surgery, Faculty of Veterinary Medicine, University of Sao Paulo, Av. Prof. Dr. Orlando Marques de Paiva, no. 87, Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Carlos AG Dantas
- Department of Animal Science, Universidade Federal Rural do Semi-Árido, Costa e Silva 59625-900, Caixa-Postal: 137, Mossoró, Rio Grande do Norte, Brazil
| | - Phelipe O Favaron
- Department of Surgery, Faculty of Veterinary Medicine, University of Sao Paulo, Av. Prof. Dr. Orlando Marques de Paiva, no. 87, Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Maria A Miglino
- Department of Surgery, Faculty of Veterinary Medicine, University of Sao Paulo, Av. Prof. Dr. Orlando Marques de Paiva, no. 87, Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
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Development of the Inverted Visceral Yolk Sac in Three Species of Caviids (Rodentia, Caviomorpha, Caviidae). Placenta 2008; 29:748-52. [DOI: 10.1016/j.placenta.2008.05.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Revised: 05/16/2008] [Accepted: 05/20/2008] [Indexed: 11/21/2022]
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Valdés G, Erices R, Chacón C, Corthorn J. Angiogenic, hyperpermeability and vasodilator network in utero-placental units along pregnancy in the guinea-pig (Cavia porcellus). Reprod Biol Endocrinol 2008; 6:13. [PMID: 18371207 PMCID: PMC2291058 DOI: 10.1186/1477-7827-6-13] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2007] [Accepted: 03/27/2008] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The angiogenic and invasive properties of the cytotrophoblast are crucial to provide an adequate area for feto-maternal exchange. The present study aimed at identifying the localization of interrelated angiogenic, hyperpermeability and vasodilator factors in the feto-maternal interface in pregnant guinea-pigs. METHODS Utero-placental units were collected from early to term pregnancy. VEGF, Flt-1, KDR, B2R and eNOS were analyzed by immunohistochemistry, and the intensity of the signals in placenta and syncytial streamers was digitally analysed. Flt1 and eNOS content of placental homogenates was determined by western blotting. Statistical analysis used one-way analysis of variance and Tukey's Multiple Comparison post-hoc test. RESULTS In the subplacenta, placental interlobium and labyrinth VEGF, Flt-1, KDR, B2R and eNOS were expressed in all stages of pregnancy. Syncytial streamers in all stages of gestation, and cytotrophoblasts surrounding myometrial arteries in early and mid pregnancy - and replacing the smooth muscle at term - displayed immunoreactivity for VEGF, Flt-1, KDR, eNOS and B2R. In partly disrupted mesometrial arteries in late pregnancy cytotrophoblasts and endothelial cells expressed VEGF, Flt-1, KDR, B2R and eNOS. Sections incubated in absence of the first antibody, or in presence of rabbit IgG fraction and mouse IgG serum, yielded no staining. According to the digital analysis, Flt-1 increased in the placental interlobium in days 40 and 60 as compared to day 20 (P = 0.016), and in the labyrinth in day 60 as compared to days 20 and 40 (P = 0.026), while the signals for VEGF, KDR, B2R, and eNOS showed no variations along pregnancy. In syncytial streamers the intensity of VEGF immunoreactivity was increased in day 40 in comparison to day 20 (P = 0.027), while that of B2R decreased in days 40 and 60 as compared to day 20 (P = 0.011); VEGF, Flt-1, KDR, B2R and eNOS expression showed no variations. Western blots for eNOS and Flt-1 in placental homogenates showed no significant temporal differences along pregnancy. CONCLUSION The demonstration of different angiogenic, hyperpermeability and vasodilator factors in the same cellular protagonists of angiogenesis and invasion in the pregnant guinea-pig, supports the presence of a functional network, and strengthens the argument that this species provides an adequate model to understand human pregnancy.
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Affiliation(s)
- Gloria Valdés
- Departamento de Nefrología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Marcoleta 391, 8330024 Santiago, Chile
- Centro de Investigaciones Médicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rafaela Erices
- Centro de Investigaciones Médicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cecilia Chacón
- Centro de Investigaciones Médicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jenny Corthorn
- Departamento de Nefrología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Marcoleta 391, 8330024 Santiago, Chile
- Centro de Investigaciones Médicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Roberts C, Owens J, Sferruzzi-Perri A. Distinct Actions of Insulin-Like Growth Factors (IGFs) on Placental Development and Fetal Growth: Lessons from Mice and Guinea Pigs. Placenta 2008; 29 Suppl A:S42-7. [DOI: 10.1016/j.placenta.2007.12.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Revised: 11/21/2007] [Accepted: 12/03/2007] [Indexed: 10/22/2022]
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