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Fiorimanti MR, Cristofolini AL, Rabaglino MB, Moreira-Espinoza MJ, Grosso MC, Barbeito CG, Merkis CI. Vascular characterization and morphogenesis in porcine placenta at day 40 of gestation. Reprod Domest Anim 2023. [PMID: 37026520 DOI: 10.1111/rda.14357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/20/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023]
Abstract
In porcine placenta, abnormal development of the placental vasculature leads to placental insufficiency. The aim of this study was to determine the mRNA expression of angiogenic growth factors and to determine the vascular characteristics in placenta at day 40 of pig gestation. Samples were collected from maternal-chorioallantoic interface (n = 21) for the measurement of mRNA expression of VEGFA, ANGPT1, ANGPT2, FGF2 and its receptors KDR, TEK, FGFR1IIIc, FGFR2IIIb respectively, and for immunohistochemistry analysis of CD31 and VEGFA. Immunohistochemical analysis of CD31 and VEGFA, morphometric measurement of blood vessels, high resolution light microscopy and transmission electron microscopy were performed. Capillary area density, number of blood vessels and capillary area were significantly higher on the maternal side than on the fetal side (P<0.05). The ultrastructural finding of blood vessels demonstrates close contact with the trophoblastic epithelium. The relative mRNA expression of VEGFA and its receptor KDR were higher compared with the other angiogenic genes. In conclusion, a high mRNA expression of VEGFA and its receptor KDR added to the immunohistochemical results suggest a potential role of these genes in this pathway associated with an increase in the density of the capillary area on the maternal side and a reduction in the hemotrophic diffusion distance at the interface for nutrient exchange.
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Affiliation(s)
- M R Fiorimanti
- Area of Electron Microscopy, Department of Animal Pathology. School of Agronomy and Veterinary, National University of Río Cuarto, Córdoba, Argentina
- National Scientific and Technical Research Council (CONICET), Argentina
| | - A L Cristofolini
- Area of Electron Microscopy, Department of Animal Pathology. School of Agronomy and Veterinary, National University of Río Cuarto, Córdoba, Argentina
- National Scientific and Technical Research Council (CONICET), Argentina
| | - M B Rabaglino
- National Scientific and Technical Research Council (CONICET), Argentina
| | | | - M C Grosso
- Department of Animal Anatomy, School of Agronomy and Veterinary, Córdoba, Argentina
| | - C G Barbeito
- National Scientific and Technical Research Council (CONICET), Argentina
- Laboratory of Descriptive, Comparative and Experimental Histology and Embriology, School of Veterinary Sciences, Buenos Aires, Argentina
| | - C I Merkis
- Area of Electron Microscopy, Department of Animal Pathology. School of Agronomy and Veterinary, National University of Río Cuarto, Córdoba, Argentina
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2
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Falcón JE, Rivero MB, Doumecq ML, Soto P, Monteavaro CE, Woudwyk MA, Barbeito CG. Variations in the carbohydrate expression pattern and in lesions of the uterine horns of BALB/c mice infected with different Tritrichomonas foetus isolates. Res Vet Sci 2022; 152:633-639. [PMID: 36209616 DOI: 10.1016/j.rvsc.2022.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/04/2022] [Accepted: 09/23/2022] [Indexed: 10/14/2022]
Abstract
Bovine tritrichomonosis, a sexually transmitted disease caused by the protozoan Tritrichomonas foetus, is characterized by producing reproductive alterations in cattle. Carbohydrates on the surface of the uterine epithelium are involved in the process of adhesion and colonization of the protozoan. The murine model has proved to be an inexpensive, practical and representative alternative to study the lesions produced in the natural host. For this work, during the first stage, 6-8 week old female BALB/c mice were inoculated with 24 different T. foetus isolates in order to classify them according to their pathogenicity. Then, seven isolates were selected and processed with lectin histochemistry to determine if the differences in pathogenicity corresponded to the changes found in the uterine carbohydrate expression pattern. In this work, we demonstrate the differences in the expression of the carbohydrate pattern between infected and uninfected mice. In addition, within the group of infected mice, differences were found in the degree of pathogenicity of the isolates, thus evidencing their biological variability.
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Affiliation(s)
- J E Falcón
- Instituto de Patología, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, Argentina; Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, Argentina
| | - M B Rivero
- Laboratorio de Biología Molecular, Inmunología y Microbiología (LaBIM), Instituto Multidisciplinario de Salud, Tecnología y Desarrollo (IMSaTeD), CONICET-UNSE, Santiago del Estero, Argentina.
| | - M L Doumecq
- Laboratorio de Microbiología Clínica y Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional del centro de la Provincia de Buenos Aires, Tandil, Argentina
| | - P Soto
- Laboratorio de Microbiología Clínica y Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional del centro de la Provincia de Buenos Aires, Tandil, Argentina
| | - C E Monteavaro
- Laboratorio de Microbiología Clínica y Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional del centro de la Provincia de Buenos Aires, Tandil, Argentina
| | - M A Woudwyk
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, Argentina
| | - C G Barbeito
- Instituto de Patología, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, Argentina; Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata, La Plata, Argentina
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3
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Castro ANC, Díaz MC, Mendoza Torres GJ, Moreno Burgos B, Zanuzzi C, Illia MC, Lendez PA, Carril J, Ghezzi MD, Bodiola Diez JJ, Barbeito CG. Patterns of proliferation and cell differentiation during hepatic ontogeny in the alpaca. Tissue Cell 2021; 71:101589. [PMID: 34274592 DOI: 10.1016/j.tice.2021.101589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 10/21/2022]
Abstract
The liver has multiple functions that change throughout ontogeny. South American camelids (SAC) have unique characteristics related to adaptation to extreme environments and metabolism. However, the process of hepatic cell differentiation has not been studied in any SAC. We study the patterns of cell differentiation and proliferation in the liver of the alpaca at different times of the ontogeny, excluding the hematopoietic components. Immunohistochemical techniques were performed in 66 specimens, including embryos, fetuses, neonates and adults. Supplementary analyses were performed by lectinhistochemistry. The hepatocytic differentiation was performed by the identification of Hepatocyte (Clone: OCH1ES Dako®). It began in the specimens of 1.8-2.5 cm of crown to rump length (CRL), from Days 25-29 (ovulation = Day 0), continued during gestation and intensified towards its end. The cholangiocytic differentiation was performed by the identification of cytokeratin 7 (CK7, Dako®). It was manifested at the final of gestation (specimens of 28.4 cm CRL, from Day 223 onwards). Parenchymal cells underwent a process of gradual differentiation (differentiation of hepatocytes preceded that of cholangiocytes). Cell proliferation was observed along gestation using the nuclear proliferation antigen (PCNA) and Ki-67. Hepatic organogenesis in the alpacas shares similar differentiation and proliferation mechanisms with other altricial, but phylogenetically distant, species.
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Affiliation(s)
- A N C Castro
- Laboratorio de Anatomía, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario (7000), Tandil, Buenos Aires, Argentina
| | - M C Díaz
- Laboratorio de Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario (7000), Tandil, Buenos Aires, Argentina
| | - G J Mendoza Torres
- Laboratorio de Anatomía, Facultad de Veterinaria y Zootecnia, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, Distrito San Martín de Porres, Lima, Perú
| | - B Moreno Burgos
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Av. Miguel Servet 177, Zaragoza, España
| | - C Zanuzzi
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada. Facultad de Ciencias Veterinarias, CONICET, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, 1900, Argentina
| | - M Carrica Illia
- Laboratorio de Anatomía, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario (7000), Tandil, Buenos Aires, Argentina
| | - P A Lendez
- Laboratorio de Anatomía, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario (7000), Tandil, Buenos Aires, Argentina
| | - J Carril
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada. Facultad de Ciencias Veterinarias, CONICET, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, 1900, Argentina
| | - M D Ghezzi
- Laboratorio de Anatomía, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario (7000), Tandil, Buenos Aires, Argentina
| | - J J Bodiola Diez
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Av. Miguel Servet 177, Zaragoza, España
| | - C G Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada. Facultad de Ciencias Veterinarias, CONICET, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, 1900, Argentina.
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4
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Sanz Ressel BL, Massone AR, Barbeito CG. Expression of the epidermal stem cell marker p63/CK5 in cutaneous papillomas and cutaneous squamous cell carcinomas of dogs. Res Vet Sci 2020; 135:366-370. [PMID: 33162109 DOI: 10.1016/j.rvsc.2020.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 11/25/2022]
Abstract
Cutaneous papillomas (CPs) and cutaneous squamous cell carcinomas (CSCCs) are usual epidermal tumours in dogs. CPs and CSCCs probably arise from the neoplastic transformation of the keratinocytes within the stem cell compartment, since these cells are the only keratinocytes that would reside long enough to accumulate the number of molecular alterations to drive the progression towards a tumour cell phenotype. However, the role of these cells in common epidermal tumours in dogs is still unknown. Thus, the purpose of this study was to evaluate the immunohistochemical expression pattern of p63 together with CK5, molecular markers of epidermal stem cells, on sections of tissue microarrays constructed from canine samples of CP and CSCC to investigate the contribution of stem cells in those canine tumours. p63/CK5 coexpression was retained in most basal and some suprabasal cells in CPs and CSCCs. In addition, increased coexpression of these molecules was observed in a group of CPs and CSCCs, as a result of a higher p63 expression. These results suggest that the coexpression of p63/CK5 may mark epidermal keratinocytes that possess self-renewal capacity rather than only stem cells, and suggest that transit amplifying cells, and even differentiated keratinocytes, may also contribute to the pathogenesis of epidermal tumours in dogs.
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Affiliation(s)
- B L Sanz Ressel
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, Consejo nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina.
| | - A R Massone
- Laboratorio de Patología Especial Veterinaria Dr. Bernardo Epstein, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - C G Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, Consejo nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
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5
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Sanz Ressel BL, Massone AR, Barbeito CG. Aberrant Expression of E-cadherin/β-catenin During Epidermal Tumourigenesis in Dogs. J Comp Pathol 2020; 176:1-9. [PMID: 32359620 DOI: 10.1016/j.jcpa.2020.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/21/2020] [Accepted: 01/25/2020] [Indexed: 11/18/2022]
Abstract
Clinically relevant epidermal tumours in dogs include cutaneous papillomas (CPs) and cutaneous squamous cell carcinomas (CSCCs). The development of CPs and CSCCs involves dysregulation in expression of E-cadherin/β-catenin; however, knowledge about the contribution of these molecules to epidermal tumourigenesis in dogs is limited. This study examined the immunohistochemical expression pattern of E-cadherin/β-catenin in samples of normal canine epidermis, CPs, preneoplastic epidermis and CSCCs, using tissue microarrays, in order to elucidate whether the dysregulated expression of these molecules may contribute to the pathogenesis of clinically relevant epidermal tumours in dogs. We also investigated the correlation between the immunohistochemical expression pattern of E-cadherin/β-catenin in these tissue microarrays to further evaluate whether the disruption of the adherens junction interactions plays a relevant role in canine epidermal tumourigenesis. In samples of CP and preneoplastic epidermis, the membrane immunoreactivity of E-cadherin/β-catenin was conserved, while in CSCC, the immunoreactivity of these molecules was significantly reduced, independently of the tumour location. There was significant correlation between the membrane expression of E-cadherin/β-catenin in CSCC. β-catenin also showed cytoplasmic and nuclear expression in samples of CP, preneoplastic epidermis and CSCC. These results support the hypothesis that dysregulated expression of E-cadherin/β-catenin may play a critical role in the pathogenesis of relevant canine epidermal tumours, not only due to the disruption of the intercellular adherens junctions, but also due to the dysregulated activity of the signalling pathways in which these molecules are involved.
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Affiliation(s)
- B L Sanz Ressel
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de La Plata, Calle 60 y 118, La Plata, Buenos Aires, Argentina.
| | - A R Massone
- Laboratorio de Patología Especial Veterinaria Dr. Bernardo Epstein, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, Buenos Aires, Argentina
| | - C G Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Calle 60 y 118, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de La Plata, Calle 60 y 118, La Plata, Buenos Aires, Argentina
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6
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Barbeito-Andrés J, Pezzuto P, Higa LM, Dias AA, Vasconcelos JM, Santos TMP, Ferreira JCCG, Ferreira RO, Dutra FF, Rossi AD, Barbosa RV, Amorim CKN, De Souza MPC, Chimelli L, Aguiar RS, Gonzalez PN, Lara FA, Castro MC, Molnár Z, Lopes RT, Bozza MT, Vianez JLSG, Barbeito CG, Cuervo P, Bellio M, Tanuri A, Garcez PP. Congenital Zika syndrome is associated with maternal protein malnutrition. Sci Adv 2020; 6:eaaw6284. [PMID: 31950075 PMCID: PMC6954064 DOI: 10.1126/sciadv.aaw6284] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 10/22/2019] [Indexed: 05/09/2023]
Abstract
Zika virus (ZIKV) infection during pregnancy is associated with a spectrum of developmental impairments known as congenital Zika syndrome (CZS). The prevalence of this syndrome varies across ZIKV endemic regions, suggesting that its occurrence could depend on cofactors. Here, we evaluate the relevance of protein malnutrition for the emergence of CZS. Epidemiological data from the ZIKV outbreak in the Americas suggest a relationship between undernutrition and cases of microcephaly. To experimentally examine this relationship, we use immunocompetent pregnant mice, which were subjected to protein malnutrition and infected with a Brazilian ZIKV strain. We found that the combination of protein restriction and ZIKV infection leads to severe alterations of placental structure and embryonic body growth, with offspring displaying a reduction in neurogenesis and postnatal brain size. RNA-seq analysis reveals gene expression deregulation required for brain development in infected low-protein progeny. These results suggest that maternal protein malnutrition increases susceptibility to CZS.
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Affiliation(s)
- J. Barbeito-Andrés
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Institute for Studies in Neuroscience and Complex Systems (ENyS) CONICET, Buenos Aires, Argentina
| | - P. Pezzuto
- Department of Genetics, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - L. M. Higa
- Department of Genetics, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A. A. Dias
- Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - J. M. Vasconcelos
- Biological Science Institute, Federal University of Pará, Belém, Brazil
| | - T. M. P. Santos
- Nuclear Instrumentation Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - J. C. C. G. Ferreira
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - R. O. Ferreira
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - F. F. Dutra
- Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A. D. Rossi
- Department of Genetics, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - R. V. Barbosa
- CENABIO (National Center of Structural Biology and Bioimaging), Rio de Janeiro, Brazil
| | - C. K. N. Amorim
- Technological Innovations Centre, Evandro Chagas Institute, Ananindeua, Brazil
| | - M. P. C. De Souza
- Technological Innovations Centre, Evandro Chagas Institute, Ananindeua, Brazil
| | - L. Chimelli
- State Institute of Brain Paulo Niemeyer, Rio de Janeiro, Brazil
| | - R. S. Aguiar
- Department of Genetics, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - P. N. Gonzalez
- Institute for Studies in Neuroscience and Complex Systems (ENyS) CONICET, Buenos Aires, Argentina
| | - F. A. Lara
- Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - M. C. Castro
- Department of Global Health and Population, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Z. Molnár
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - R. T. Lopes
- Nuclear Instrumentation Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - M. T. Bozza
- Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - J. L. S. G. Vianez
- Technological Innovations Centre, Evandro Chagas Institute, Ananindeua, Brazil
| | - C. G. Barbeito
- Faculty of Veterinary Sciences, National University of La Plata, Buenos Aires, Argentina
| | - P. Cuervo
- Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - M. Bellio
- Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A. Tanuri
- Department of Genetics, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - P. P. Garcez
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Sanz Ressel BL, Massone AR, Barbeito CG. Dysregulated Expression of Phosphorylated Epidermal Growth Factor Receptor and Phosphatase and Tensin Homologue in Canine Cutaneous Papillomas and Squamous Cell Carcinomas. J Comp Pathol 2019; 174:26-33. [PMID: 31955800 DOI: 10.1016/j.jcpa.2019.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 10/10/2019] [Accepted: 10/15/2019] [Indexed: 10/25/2022]
Abstract
The molecular mechanisms contributing to the development of cutaneous papillomas (CPs) and cutaneous squamous cell carcinomas (CSCCs) are still poorly understood, limiting the ability to identify molecular suitable targets for the development of novel therapies. Persistent activation of the phosphatidylinositol 3-kinase/Akt/mammalian target of rapamycin (PI3K/Akt/mTOR) signalling pathway is a component of epidermal carcinogenesis in dogs. The present study describes the immunohistochemical expression pattern of two key regulatory molecules involved in the PI3K/Akt/mTOR signalling pathway, phosphorylated epidermal growth factor receptor (pEGFR)Tyr1068 and phosphatase and tensin homologue (PTEN), in samples of normal canine epidermis, CP, preneoplastic epidermis and CSCC using tissue microarrays to determine whether the deregulated activity of these molecules is involved in the pathogenesis of these relevant epidermal tumours of dogs. Expression of pEGFR and PTEN was dysregulated in most samples of CP, preneoplastic epidermis and CSCC. Overexpression of pEGFR, together with decreased expression of PTEN, may facilitate the progression of some canine CPs and CSCCs by deregulation of the key cellular functions in which the PI3K/Akt/mTOR signalling pathway is involved. These findings suggest that the PI3K/Akt/mTOR signalling molecules may be potential therapeutic targets for canine patients with CP and CSCC.
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Affiliation(s)
- B L Sanz Ressel
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, CONICET, UNLP, La Plata, Buenos Aires, Argentina.
| | - A R Massone
- Laboratorio de Patología Especial Veterinaria Dr. Bernardo Epstein, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - C G Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, CONICET, UNLP, La Plata, Buenos Aires, Argentina
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8
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Dorsch MA, de Yaniz MG, Fiorani F, Hecker YP, Odeón AC, Morrell EL, Campero CM, Barbeito CG, Moore DP. A Descriptive Study of Lectin Histochemistry of the Placenta in Cattle following Inoculation of Neospora caninum. J Comp Pathol 2018; 166:45-53. [PMID: 30691605 DOI: 10.1016/j.jcpa.2018.10.172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 09/29/2018] [Accepted: 10/24/2018] [Indexed: 11/18/2022]
Abstract
The aim of this study was to describe the lectin-binding pattern in the placentas of cows infected experimentally with Neospora caninum. Four cows were inoculated intravenously with 1 × 108 tachyzoites of the NC-1 strain of N. caninum at 150 ± 7 days of pregnancy. Two control cows were administered a placebo. An indirect fluorescence antibody test (IFAT) was performed on serum samples obtained before and after the inoculation. The cows were killed at 30 and 37 days post inoculation. Samples of placenta were taken for histopathology and lectin histochemistry. Fetal tissues and fluids were collected for histopathology and IFAT, respectively. All infected cows had high antibody titres. All fetuses had characteristic histopathological lesions, including non-suppurative meningoencephalitis, myocarditis, hepatitis and myositis, suggesting N. caninum infection. Only two infected fetuses developed specific antibodies. Mild non-suppurative inflammatory infiltrates were recorded in the placentae. Differences in the lectin-binding pattern were observed between infected animals and controls in the glycocalyx (CON-A and WGA) and apical cytoplasm (RCA-I and CON-A) of the trophoblastic cells; giant trophoblastic cells (CON-A and DBA); glycocalyx (PNA, WGA) and apical cytoplasm (CON-A, WGA, PNA, DBA and RCA-I) of endometrial cells; trophoblast of the interplacentomal region (WGA); endothelium (CON-A, SBA, RCA-1 and WGA); and finally, mesenchyme (CON-A, RCA-1, SBA, PNA and DBA). These findings indicate that there is a distinctive pattern of lectin binding in the placenta of cattle infected with N. caninum. The direct effect of the presence of the protozoa as well as the altered expression of cytokines could explain these changes in the maternofetal interface.
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Affiliation(s)
- M A Dorsch
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Argentina
| | - M G de Yaniz
- Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Argentina
| | - F Fiorani
- Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Y P Hecker
- Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - A C Odeón
- Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina
| | - E L Morrell
- Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina
| | - C M Campero
- Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina
| | - C G Barbeito
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
| | - D P Moore
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
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9
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Santelices Iglesias OA, Wright C, Duchene AG, Risso MA, Risso P, Zanuzzi CN, Nishida F, Lavid A, Confente F, Díaz M, Portiansky EL, Gimeno EJ, Barbeito CG. Association between Degree of Anaplasia and Degree of Inflammation with the Expression of COX-2 in Feline Injection Site Sarcomas. J Comp Pathol 2018; 165:45-51. [PMID: 30502795 DOI: 10.1016/j.jcpa.2018.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/14/2018] [Accepted: 09/08/2018] [Indexed: 01/11/2023]
Abstract
Feline injection site sarcomas (FISSs) are mesenchymal neoplasms that develop at the sites of delivery of vaccines or other injectable products. Vaccine adjuvants can trigger an intense and persistent inflammatory response that may lead to neoplastic transformation. The proinflammatory role of cyclo-oxygenase (COX)-2 is well known and its overexpression has prognostic value in multiple neoplastic processes. One hundred and seventeen FISSs were evaluated for the degree of inflammation and anaplasia. Immunohistochemistry was used to determine the expression of COX-2 in these sarcomas. There was a significant association between the degree of inflammation and the expression of COX-2 by neoplastic cells. COX-2 expression was lower in tumours with higher degrees of anaplasia. These findings may be useful in predicting the sensitivity of FISSs to treatment with COX-2 inhibitors. The potential therapeutic use of such agents could then be restricted to tumours with lower degrees of anaplasia.
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Affiliation(s)
- O A Santelices Iglesias
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina.
| | - C Wright
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina
| | - A G Duchene
- Hospital, School of Veterinary Sciences, National University of Buenos Aires, CABA, Buenos Aires, Argentina
| | - M A Risso
- Department of Epizootiology and Public Health, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina
| | - P Risso
- Department of Epizootiology and Public Health, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina
| | - C N Zanuzzi
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; National Research Council of Science and Technology, CABA, Buenos Aires, Argentina
| | - F Nishida
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; National Research Council of Science and Technology, CABA, Buenos Aires, Argentina
| | - A Lavid
- Hospital, School of Veterinary Sciences, National University of Buenos Aires, CABA, Buenos Aires, Argentina
| | - F Confente
- Private Professional, CABA, Buenos Aires, Argentina
| | - M Díaz
- Private Professional, CABA, Buenos Aires, Argentina
| | - E L Portiansky
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; National Research Council of Science and Technology, CABA, Buenos Aires, Argentina
| | - E J Gimeno
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; National Research Council of Science and Technology, CABA, Buenos Aires, Argentina
| | - C G Barbeito
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; Laboratory of Descriptive, Experimental and Comparative Histology and Embryology, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina; National Research Council of Science and Technology, CABA, Buenos Aires, Argentina
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10
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Castro ANC, Díaz MC, Mendoza-Torres GJ, Llerena-Zavala CA, Ghezzi MD, Barbeito CG. Morphology of alpaca (Vicugna pacos
) embryos in the first third of pregnancy. Reprod Domest Anim 2018; 53:655-666. [DOI: 10.1111/rda.13155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/14/2017] [Indexed: 11/30/2022]
Affiliation(s)
- ANC Castro
- Laboratorio de Anatomía; Facultad de Ciiencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Tandil Argentina
| | - MC Díaz
- Laboratorio de Embriología; Facultad de Ciencias Veterinarias; Universidad Nacional del Centro de la; Tandil Argentina
| | - GJ Mendoza-Torres
- Laboratorio de Anatomía; Facultad de Veterinaria y Zootecnia; Universidad Peruana Cayetano Heredia; Lima Perú
| | - CA Llerena-Zavala
- Laboratorio de Histología; Facultad de Veterinaria y Zootecnia; Universidad Peruana Cayetano Heredia; Lima Perú
| | - MD Ghezzi
- Laboratorio de Anatomía; Facultad de Ciiencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Tandil Argentina
| | - CG Barbeito
- Laboratorio de Histología y Embriología Descriptiva; Experimental y Comparada; Facultad de Ciencias Veterinarias; CONICET; Universidad Nacional de la Plata; La Plata Argentina
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11
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Scrochi MR, Zanuzzi CN, Fuentealba N, Nishida F, Bravi ME, Pacheco ME, Sguazza GH, Gimeno EJ, Portiansky EL, Muglia CI, Galosi CM, Barbeito CG. Investigation of apoptosis in cultured cells infected with equine herpesvirus 1. Biotech Histochem 2017; 92:560-568. [DOI: 10.1080/10520295.2017.1359749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- MR Scrochi
- Departments of Virology
- Histology and Embryology
- National Scientific and Technical Research Council (CONICET), Argentina
| | - CN Zanuzzi
- Histology and Embryology
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata
- National Scientific and Technical Research Council (CONICET), Argentina
| | - N Fuentealba
- Departments of Virology
- National Scientific and Technical Research Council (CONICET), Argentina
| | - F Nishida
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata
| | - ME Bravi
- Departments of Virology
- National Scientific and Technical Research Council (CONICET), Argentina
| | - ME Pacheco
- Department of Analytical Chemistry, School of Exact Sciences, National University of La Plata, La Plata
- National Scientific and Technical Research Council (CONICET), Argentina
| | | | - EJ Gimeno
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata
- National Scientific and Technical Research Council (CONICET), Argentina
| | - EL Portiansky
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, La Plata
- National Scientific and Technical Research Council (CONICET), Argentina
| | - CI Muglia
- Department of Immunopathology, Institute of Immunological and Physiopathological Studies (IIFP)
- National Scientific and Technical Research Council (CONICET), Argentina
| | - CM Galosi
- Departments of Virology
- Scientific Research Commission of Buenos Aires Province (CIC-PBA), Buenos Aires, Argentina
| | - CG Barbeito
- Histology and Embryology
- National Scientific and Technical Research Council (CONICET), Argentina
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12
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Sanz Ressel BL, Massone AR, Barbeito CG. Uso de la técnica de micromatrices de tejido en histología veterinaria. VE 2017. [DOI: 10.24215/15142590e008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Las micromatrices de tejido son plataformas de alto rendimiento que permiten el análisis de decenas a cientos de muestras de tejidos en forma simultánea. Estas se han utilizado, en especial, para analizar tejidos neoplásicos. Sin embargo, los beneficios de su aplicación pueden ser aprovechados en otras áreas de investigación, como la embriología y la histología. El presente trabajo explora el uso de la técnica de micromatrices de tejido para el análisis morfológico y molecular de tejidos animales normales. Un total de 82 muestras de piel canina normal prenatal y posnatal fueron utilizadas para construir la matriz. A partir de ésta, se obtuvo una gran cantidad de secciones en las que se aplicaron técnicas de histología convencional y de inmunohistoquímica. Los resultados nos muestran la eficacia de la técnica para realizar el análisis morfológico y molecular de decenas de muestras de tejido normal en forma simultánea. Esto permite la evaluación más estandarizada de los tejidos, reduciendo así la variabilidad que puede ocurrir cuando se realizan ensayos sobre muestras individuales.
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13
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Díaz MC, González NV, Zanuzzi CN, Najle R, Barbeito CG. Lectin histochemistry for detecting cadmium-induced changes in the glycosylation pattern of rat placenta. Biotech Histochem 2017; 92:36-45. [PMID: 28166424 DOI: 10.1080/10520295.2016.1185668] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Cadmium (Cd) is an industrial and environmental pollutant that produces toxic effects on gametogenesis, pre- and post-implantation embryos, and the placenta. Because the effects of acute Cd intoxication on the placenta are not well understood, we investigated changes in its glycosylated components in Cd treated dams at days 4, 7, 10 and 15 of gestation using lectin histochemistry. CdCl2 was administered to pregnant rats; control animals received sterile normal saline. Placentas were processed for DBA, Con A, SBA, PNA, UEA-I, RCA-I and WGA lectin histochemistry to evaluate changes in the carbohydrate pattern of the placenta that might modify cell interactions and contribute to embryonic alterations. Lectin binding was analyzed in the yolk sac; trophoblast giant cells; trophoblast I, II and III; spongiotrophoblast cells and endovascular trophoblast cells in the chorioallantoic placenta. Our lectin binding patterns showed that Cd caused alteration of SBA and DBA labeling of trophoblast-derived cells, which suggested increased expressions of α and β GalNAc. Cd also caused decreased UEA-1 binding affinity, which indicated fewer α-L-Fuc residues in placentas of Cd treated dams. The nonreactivity in trophoblast I of the control placentas incubated with Con-A contrasted with the labeling in placentas of experimental dams, which indicated increased expression of terminal α-D-Man, and α-D-Glc residues. We found that Cd altered the reactivity of placenta to several lectins, which indicated modification of the glycotype presented by the fetal component of the placenta. We report that Cd exerts a deleterious effect on the glycosylation pattern of the placenta.
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Affiliation(s)
- M C Díaz
- a Veterinary College , National University of the Center of Buenos Aires , Tandil , Buenos Aires Province
| | - N V González
- b Veterinary Sciences College , National University of La Plata Buenos Aires Province
| | - C N Zanuzzi
- b Veterinary Sciences College , National University of La Plata Buenos Aires Province.,c National Council of Scientific and Techniques Research , Argentina
| | - R Najle
- a Veterinary College , National University of the Center of Buenos Aires , Tandil , Buenos Aires Province
| | - C G Barbeito
- b Veterinary Sciences College , National University of La Plata Buenos Aires Province.,c National Council of Scientific and Techniques Research , Argentina
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14
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Favaron PO, Flamini MA, Mess AM, Barreto RN, Simões LS, Sasahara TH, Barbeito CG, Romagnoli P, Miglino MA. 115 ROLE OF THE OVARY AND UTERUS FOR THE PLAINS VISCACHA (LAGOSTOMUS MAXIMUS MAXIMUS, CHINCHILLIDAE) REPRODUCTION. Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1ab115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A dogma of mammalian reproduction states that primordial germ cells in females are restricted to the intrauterine phase and only small portions of oocytes are available for ovulation during the adult life. Among the rare exceptions to this rule is the plains viscacha. It polyovulates up to 800 oocytes per cycle, from which 10 to 12 are implanted, but only 1 to 2 conceptuses survive. To better understand the main mechanisms involved in these patterns of super-ovulation, super-implantation, and embryonic loss in the viscacha, we conducted an analysis of the ovary and uterus of pregnant females and their conceptuses. Pregnant females (n = 16) of ~50 and 90 days of gestation (early to mid-gestation) were selected for conceptus recovery. Hemi-ovariohysterectomy was performed following surgical and anaesthetic protocols used for laboratory animals and the conceptuses collected. Female fetuses of Day 50 (n = 2) and 90 (n = 1) of gestation were obtained from Estación de Cría de Animales Silvestres, Buenos Aires, Argentina. The reproductive organs were investigated by means of gross morphology, histology (hematoxilin and eosin), stereology (quantification of the volume of the ovary and number of ovary follicles), immunohistochemistry (PCNA, Oct-4, VEGF, and Caspase-3), and transmission electron microscopy. In the Day 50 fetal samples, the ovaries had an ovoid shape with smooth surface without apparent folds. First steps of subdivision were observed in the ovary of fetus of 90 days. The total volume of all fetal ovaries was of 4.8 mm2 and a coefficient of variation (CV) of 0.32. The ovaries of adult individuals had remarkable invaginations with surface projections and were small, asymmetrical, and dorsoventrally flattened with a mean of 77.6 mm3 (CV = 0.47). Only adult females had differentiation of germ cells. Primordial follicles had a mean of 9.9 × 105 (CV = 0.19), representing 93% of the total number of ovarian follicles. The mean of primary follicles was 3.05 × 104 (CV = 0.36), whereas for secondary follicles it was 2.75 × 104 (CV = 0.50), each representing 3% of all ovarian follicles. The number of antral follicles in several stages of development was 8.64 × 103 (CV = 0.75), representing 1% of the follicles. Primordial follicles expressed pluripotency (Oct-4+) and proliferation (PCNA+) markers, as well as the primary follicles. The cells did not react for Caspase-3 as marker for apoptosis. Variations regarding to the vascularization of the different regions of the uterine horn were observed, which were more intense and efficient near to the cervix. Data showed that a specialised, highly convoluted structure of the ovarian cortex developed in the intrauterine phase as a prerequisite for massive super-ovulation, associated with the inhibition of apoptosis and continued proliferation of germ cells, as well as maintenance of several corpora lutea during the adult life. Thus, a highly complex pattern of polyovulation, polyimplantation, and controlling mechanisms has evolved in the female reproductive system of the viscacha that mainly was associated with the maternal side. After an in-depth analysis of the arterial and venous vascularization of the uterine horns and uteri, we speculate that specializations regarding the vasculature and musculature evolved first and then contributed as a compensatory or controlling mechanism for polyovulation and polyimplantation. In conclusion, polyovulation in the viscacha represents a unique enigma in reproductive biology.
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15
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Zanuzzi CN, Bravi ME, Scrochi MR, Nishida F, Fuentealba NA, Diessler ME, Sguazza HG, Muglia CI, Gimeno EJ, Portiansky EL, Barbeito CG, Galosi CM. Microvascular lesions and changes in cell proliferation and death, and cytokine expression in the placentas of mice experimentally infected with Equid Herpesvirus 1. Res Vet Sci 2016; 109:121-128. [PMID: 27892860 DOI: 10.1016/j.rvsc.2016.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 08/23/2016] [Accepted: 09/12/2016] [Indexed: 02/04/2023]
Abstract
This study describes the changes observed in the placentas of mice experimentally infected with an abortigenic strain of EHV-1 at mid-pregnancy and euthanized at days 3 and 4 post-infection. We analyzed microscopic vascular alterations, cell proliferation and death by immunohistochemistry, and the expression of IFN-γ, TNF-α and the IL-10 by qPCR and flow cytometry. Infected mice showed slight respiratory signs and ruffled fur during the first two days post-infection. Virus isolation and DNA detection were positive only in the lungs of the infected mice. Vascular congestion, increase in the labyrinth area, and a significant reduction in fetal capillary endothelium surface of infected placentas were found. Cell proliferation was significantly reduced in the infected placentas, whereas the apoptosis was significantly increased. IL10, TNF and IFN-γ showed different expression in the infected placentas and uteri. The effects of EHV-1 during pregnancy depend on different pathogenic mechanisms in which vascular alterations, and cell death and proliferation and local cytokine changes are compromised.
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Affiliation(s)
- C N Zanuzzi
- Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata, Argentina; National Research Council (CONICET), Argentina.
| | - M E Bravi
- Department of Virology, School of Veterinary Sciences, National University of La Plata, Argentina; Agency for the Promotion of Science and Technology (ANPCyT), Argentina
| | - M R Scrochi
- Department of Virology, School of Veterinary Sciences, National University of La Plata, Argentina; Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata, Argentina; National Research Council (CONICET), Argentina
| | - F Nishida
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, Argentina
| | - N A Fuentealba
- Department of Virology, School of Veterinary Sciences, National University of La Plata, Argentina; National Research Council (CONICET), Argentina
| | - M E Diessler
- Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata, Argentina
| | - H G Sguazza
- Department of Virology, School of Veterinary Sciences, National University of La Plata, Argentina
| | - C I Muglia
- Department of Immunopathology, Institute of Immunological and Physiopathological Studies (IIFP), Argentina; National Research Council (CONICET), Argentina
| | - E J Gimeno
- National Research Council (CONICET), Argentina
| | - E L Portiansky
- Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, Argentina; National Research Council (CONICET), Argentina
| | - C G Barbeito
- Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata, Argentina; Image Analysis Laboratory, School of Veterinary Sciences, National University of La Plata, Argentina; National Research Council (CONICET), Argentina
| | - C M Galosi
- Department of Virology, School of Veterinary Sciences, National University of La Plata, Argentina; Scientific Research Commission (CIC) of Province of Buenos Aires, Buenos Aires, Argentina
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16
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Ferretti VA, Segal-Eiras A, Barbeito CG, Croce MV. Temporal and spatial expression of Muc2 and Muc5ac mucins during rat respiratory and digestive tracts development. Res Vet Sci 2016; 104:136-45. [PMID: 26850552 DOI: 10.1016/j.rvsc.2015.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/15/2015] [Accepted: 12/22/2015] [Indexed: 10/22/2022]
Abstract
Secreted mucins constitute a crucial part of the gel that protects respiratory and digestive epithelia, being MUC2/Muc2 the predominant gel-forming mucin of the intestine while MUC5AC/Muc5ac is one of the gel-forming mucins most expressed at the airways. In this study, we have analyzed Muc2 and Muc5ac during rat development by using immunohistochemistry, Western blotting and RT-PCR. We demonstrated that rat Muc2 was expressed in fetal intestinal goblet cells of surface epithelium of villi and developing Lieberkühn crypts. In neonates and adults, Muc2 was expressed at luminal goblet cells of small and large intestine and at gastric mucous and glandular cells. Muc5ac protein was observed in embryonic gastric and lung samples; expression increased during development and postnatal and adult life. After birth, a low reaction was detected at the tracheal surface epithelium and glands, which increased in adults.
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Affiliation(s)
- V A Ferretti
- Centre of Basic and Applied Immunological Research, Faculty of Medical Sciences, National University of La Plata, La Plata, Argentina
| | - A Segal-Eiras
- Centre of Basic and Applied Immunological Research, Faculty of Medical Sciences, National University of La Plata, La Plata, Argentina
| | - C G Barbeito
- Laboratory of Histology and Embryology, Faculty of Veterinary Sciences, National University of La Plata, Argentina
| | - M V Croce
- Centre of Basic and Applied Immunological Research, Faculty of Medical Sciences, National University of La Plata, La Plata, Argentina.
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17
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Chiale MC, Montalti D, Flamini MA, Fernández P, Gimeno E, Barbeito CG. Histological and histochemical study of the uropygial gland of chimango caracara (Milvago chimango vieillot, 1816). Biotech Histochem 2015; 91:30-7. [PMID: 26472245 DOI: 10.3109/10520295.2015.1068953] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The uropygial glands of birds are sebaceous organs that contribute to the water-repellent properties of the feather coat. We studied the histological and histochemical characteristics of the uropygial gland of chimango caracara using hematoxylin and eosin (H & E), Gomori´s trichrome, orcein, Gomori´s reticulin, periodic acid-Schiff (PAS), Alcian blue (AB) and a variety of lectins. The gland is composed of two lobes and a papilla with 20 downy feathers. It is surrounded by a capsule of dense connective tissue that contains elastic, reticular and smooth muscle fibers. The papilla is delicate and has two excretory ducts. The gland mass relative to body mass was 0.143%. Both adenomer cells and their secretions were stained with Sudan IV, PAS and AB, and were positive for numerous lectins that indicated the presence of lipids and carbohydrates. Immunohistochemical techniques to detect PCNA confirmed cell proliferation in the basal stratum of the adenomer cells. The lipids and glycoconjugates secreted by the uropygial gland serve numerous functions including protection against microorganisms.
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Affiliation(s)
- M C Chiale
- a Ornithology, Vertebrate Zoology Division, Faculty of Natural Sciences and Museum, National University of La Plata , La Plata, Buenos Aires , Argentina.,b CONICET , La Plata, Buenos Aires , Argentina
| | - D Montalti
- a Ornithology, Vertebrate Zoology Division, Faculty of Natural Sciences and Museum, National University of La Plata , La Plata, Buenos Aires , Argentina.,b CONICET , La Plata, Buenos Aires , Argentina
| | - M A Flamini
- c Department of Histology and Embryology , Faculty of Veterinary Sciences, National University of La Plata , La Plata, Buenos Aires , Argentina
| | - P Fernández
- d Department of Pathology , Faculty of Veterinary Sciences, National University of La Plata , La Plata, Buenos Aires , Argentina
| | - E Gimeno
- b CONICET , La Plata, Buenos Aires , Argentina.,d Department of Pathology , Faculty of Veterinary Sciences, National University of La Plata , La Plata, Buenos Aires , Argentina
| | - C G Barbeito
- b CONICET , La Plata, Buenos Aires , Argentina.,c Department of Histology and Embryology , Faculty of Veterinary Sciences, National University of La Plata , La Plata, Buenos Aires , Argentina.,d Department of Pathology , Faculty of Veterinary Sciences, National University of La Plata , La Plata, Buenos Aires , Argentina
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18
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Krmpotic CM, Ciancio MR, Carlini AA, Castro MC, Scarano AC, Barbeito CG. Comparative histology and ontogenetic change in the carapace of armadillos (Mammalia: Dasypodidae). ZOOMORPHOLOGY 2015. [DOI: 10.1007/s00435-015-0281-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Ferretti VA, Canzoneri R, Barbeito CG, Croce MV, Abba MC, Lacunza E. Spatiotemporal expression of Rhomboid domain containing 2 (Rhbdd2) during rat development. Acta Histochem 2015; 117:635-41. [PMID: 26093883 DOI: 10.1016/j.acthis.2015.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/04/2015] [Accepted: 06/09/2015] [Indexed: 11/17/2022]
Abstract
Over the last few years rhomboid genes have gained interest because of its association with cancer and neurodegenerative diseases. In previous studies, we demonstrated that human RHBDD2 is over-expressed in the advanced stages of breast and colorectal cancers, suggesting a favorable role in cell proliferation. So far little is known about the expression of RHBDD2 in other tissues and other species, and because of similarities between cancer and embryonic cells, this study focused on the evaluation of Rhbdd2 expression in embryonic and adult rat tissues. By IHC and RT-PCR, Rhbdd2 was identified in early stages of most tissues analyzed, with high expression in brain, spinal cord, kidney and embryonic skin. In adult tissues, the expression remained elevated while salivary glands became positive. Furthermore, Rhbdd2 showed a high expression in the most proliferative stages of the rat mammary gland. Indeed, similar findings were observed in the mouse mammary epithelial cell line HC11, in which Rhbdd2 resides in the Golgi apparatus, and at different stages of mouse mammary gland development. Therefore, Rhbdd2 would be implicated in embryonic and adult tissue proliferation.
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Affiliation(s)
- V A Ferretti
- CINIBA, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - R Canzoneri
- CINIBA, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - C G Barbeito
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina
| | - M V Croce
- CINIBA, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - M C Abba
- CINIBA, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - E Lacunza
- CINIBA, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina.
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20
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Castro ANC, Domínguez MT, Gómez SA, Mendoza Torres GJ, Llerena Zavala CA, Ghezzi MD, Barbeito CG. Development of the Liver in Alpaca (Vicugna pacos): A Microscopic and Macroscopic Description. Anat Histol Embryol 2015; 45:173-83. [DOI: 10.1111/ahe.12183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 02/16/2015] [Indexed: 11/29/2022]
Affiliation(s)
- A. N. C. Castro
- Laboratorio de Anatomía y Laboratorio de Histología de la Facultad de Ciencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Campus Universitario (7000) Tandil Buenos Aires Argentina
| | - M. T. Domínguez
- Laboratorio de Anatomía y Laboratorio de Histología de la Facultad de Ciencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Campus Universitario (7000) Tandil Buenos Aires Argentina
| | - S. A. Gómez
- Laboratorio de Anatomía y Laboratorio de Histología de la Facultad de Ciencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Campus Universitario (7000) Tandil Buenos Aires Argentina
| | - G. J. Mendoza Torres
- Laboratorio de Anatomía Animal y Laboratorio de Histología de la Facultad de Veterinaria y Zootecnia; Universidad Peruana Cayetano Heredia; Av. Honorio Delgado 430 Urbanización Ingeniería San Martín de Porres Lima Perú
| | - C. A. Llerena Zavala
- Laboratorio de Anatomía Animal y Laboratorio de Histología de la Facultad de Veterinaria y Zootecnia; Universidad Peruana Cayetano Heredia; Av. Honorio Delgado 430 Urbanización Ingeniería San Martín de Porres Lima Perú
| | - M. D. Ghezzi
- Laboratorio de Anatomía y Laboratorio de Histología de la Facultad de Ciencias Veterinarias; Universidad Nacional del Centro de la Provincia de Buenos Aires; Campus Universitario (7000) Tandil Buenos Aires Argentina
| | - C. G. Barbeito
- Laboratorio de Histología y Embriología; Facultad de Ciencias Veterinarias; CONICET; Universidad Nacional de La Plata; 60 y 118 La Plata Provincia de Buenos Aires Argentina
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21
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Ferretti V, Segal-Eiras Á, Barbeito CG, Croce MV. Muc5ac mucin expression during rat skin development. Eur J Histochem 2015; 59:2462. [PMID: 25820562 PMCID: PMC4378216 DOI: 10.4081/ejh.2015.2462] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/07/2015] [Indexed: 11/23/2022] Open
Abstract
Some mucin genes have been detected during human embryonic and fetal organ development; however, little is known about mucin expression in epidermal development, neither in humans nor in other species. The present research was developed to explore Muc5ac skin expression during pre- and post-natal rat development. Immunohistochemistry (IHC), Western blotting (WB) and RT-PCR were employed. By IHC, Muc5ac protein was found early in embryonic epidermis from day 13 of gestation until seven days after birth when the surface epidermis became negative and the reaction was restricted to secreting sebum cells. In coincidence with IHC findings, WB analysis showed a band at approximately 200KDa at the same periods of development. Results were also confirmed by RT-PCR. Muc5ac expression in rat embryonic epidermis suggests that Muc5ac may play a protective role in embryonic skin previous to birth which may be replaced by pile covering. To our knowledge, this is the first report that confirmed Muc5ac expression during skin development.
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22
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del C Díaz M, González NV, Gómez S, Quiroga MA, Najle R, Barbeito CG. Effect of a single dose of cadmium on pregnant Wistar rats and their offspring. Reprod Domest Anim 2014; 49:1049-56. [PMID: 25322905 DOI: 10.1111/rda.12439] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 09/09/2014] [Indexed: 11/30/2022]
Abstract
Cadmium (Cd) is a well-known toxicant targeting many organs, among them placenta. This heavy metal also has embryonary and foetal toxicity. This study was undertaken to analyse the effect of a single Cd dose administered at 4, 7, 10 or 15 days of gestation on the offspring of pregnant rats sacrificed at 20 days of gestation. Cadmium chloride was administered subcutaneously at 10 mg/kg body weight to Wistar pregnant dams; control animals received a proportionate volume of sterile normal saline by the same route. Maternal uteri, livers, kidneys and lungs, and foetuses were examined at necropsy. Samples of maternal organs and whole foetuses were collected for histopathologic examination, determination of Cd levels and staining by the Alizarin red S technique. Results revealed a clear embryotoxic and a teratogenic effect of this heavy metal, the former as a significant increase in the number of resorptions, and the latter as significant decrease of the gestational sac weight, and the size and weight of foetuses of Cd-treated dams as well as induced malformations in skull bones, vertebrae and thoracic, and pelvian limbs. The deleterious effects found were similar to those previously reported for other animal models suggesting a high conservation of the pathogenic mechanisms of Cd. Additionally, many of the addressed aspects showed a slight dependence on the time of administration of the toxic that might be due to the accumulation of the metal in different organs, as we were able to demonstrate by the analysis of its concentration.
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Affiliation(s)
- M del C Díaz
- Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Campus Universitario, Tandil, Provincia de Buenos Aires, Argentina
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23
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Márquez S, Galotta JM, Gálvez GA, Portiansky E, Barbeito CG. Presence of c-kit positive cells in fetal and adult bovine forestomachs. Biotech Histochem 2014; 89:591-601. [DOI: 10.3109/10520295.2014.919023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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24
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Fernández PE, Diessler ME, Pachame A, Ortega HH, Gimeno EJ, Portiansky EL, Barbeito CG. Intermediate filament proteins expression and carbohydrate moieties in trophoblast and decidual cells of mature cat placenta. Reprod Domest Anim 2014; 49:263-9. [PMID: 24471554 DOI: 10.1111/rda.12265] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 11/10/2013] [Indexed: 11/27/2022]
Abstract
The aim of this study was to characterize cytoskeletal intermediate filament proteins and glycoconjugates of syncytiotrophoblast, cytotrophoblast and decidual cells of feline endotheliochorial placenta. Samples from 12 normal pregnant female cats, after 45 ± 5 days of gestation, were obtained removing the uterine horns by hysterectomy. Sections were processed for routine observation and for immunohistochemistry using anticytokeratin, antivimentin and antidesmin antibodies. In addition, lectin histochemistry was performed using a panel of several biotinylated lectins to characterize glycosides expression profile. Cytotrophoblast and syncytiotrophoblast showed immunoreactivity only with acidic and basic cytokeratins. Decidual cells were only positive to vimentin, consistent with their origin from endometrial fibroblasts. Trophoblast expressed a broad population of glycans, highly exposing terminal N-acetyl glucosamine residues and non-sialylated galactose and N-acetyl galactosamine oligomers. Oligosaccharides bound by Phaseolus vulgaris erythroagglutinin were the only highly branched N-linked residues evidenced in cats, and they were restricted to the syncytium. Unlike results reported on humans, mice and rats on lectin affinity of decidual cells, sialid acids and complex N-linked oligosaccharides were not demonstrated in cats. Glycosylation of proteins determines many of their final properties, thus becoming essential for the embryo-maternal dialogue during implantation and placentation. Changes in glycosylation pattern have been related to pathological pregnancies in other species. Hence, the knowledge about glycosylation profile of the normal cat placenta may lead to a better understanding of both normal and pathological reproductive events.
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Affiliation(s)
- P E Fernández
- General Pathology, School of Veterinary Sciences UNLP, La Plata, Argentina
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25
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Plaul SE, Montes MM, Barbeito CG, Martorelli SR. Morphological aspects and histological effects of the attachment organ of Parabrachiella sp. (Copepoda: Lernaeopodidae) on the grey mullet, Mugil liza Valenciennes. J Fish Dis 2013; 36:853-859. [PMID: 23444867 DOI: 10.1111/jfd.12083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 12/07/2012] [Accepted: 12/07/2012] [Indexed: 06/01/2023]
Abstract
The genus Parabrachiella Wilson, 1915 (Lernaeopodidae) is represented by copepods that are highly adapted to a parasitic way of life. In Argentina, only P. insidiosa var. lageniformis Heller, 1865, P. chevreuxii Van Beneden, 1891 and P. spinicephala Ringuelet, 1945 have been cited, but none of these have been reported on mugilids. Recently, other species of this genus were found attached to the nasal cavities of juvenile grey mullets, Mugil liza Valenciennes, from Samborombón bay, Buenos Aires province. In this study, the prevalence and mean intensity of the Parabrachiella sp. on grey mullet is investigated. In addition, the damage the parasite imposes on its hosts is examined through evaluation of histological sections and immunostaining for proliferative cell nuclear antigen (PCNA). The morphology of the parasite's bulla is described from light and scanning electron micrographs.
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Affiliation(s)
- S E Plaul
- Facultad de Ciencias Veterinarias, Cátedra de Histología y Embriología, UNLP. La Plata, Bs. As., Argentina
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26
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Valera AR, Fuentealba NA, Zanuzzi CN, Corva SG, Pecoraro MR, Barbeito CG, Galosi CM. Systemic infection induced by intranasal inoculation of Bovine herpesvirus 1.1 in pregnant and non-pregnant rabbits. Res Vet Sci 2013; 95:709-16. [PMID: 23602434 DOI: 10.1016/j.rvsc.2013.03.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 03/19/2013] [Accepted: 03/25/2013] [Indexed: 11/16/2022]
Abstract
Bovine herpesvirus (BoHV) type 1.1 (BoHV-1.1) causes repeated outbreaks of upper respiratory disease and abortion in cattle. The systemic effects of BoHV-1.1 in rabbits, using intranasal inoculation are reported. Female rabbits were divided into four groups and inoculated with the virus 10 days before mating, and at 15 or 22 days of pregnancy. Studies of the clinical signs, antibody production, virus isolation, and DNA detection as well as histological and immunohistochemical studies were carried out on lungs, kidneys, spleen, placentas, uteri and foetal tissues. All virus-inoculated animals developed respiratory clinical signs and a humoral response. BoHV-1.1 was isolated from nasal swabs and plasma rich in leukocytes, and viral DNA was detected in blood, dead foetuses and placentas. Histopathological lesions were found in the respiratory tract and some placentas and foetuses were immunohistochemically positive. Intranasal inoculation might be useful to study the systemic effects of BoHV-1.1 infection in the rabbit model.
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Affiliation(s)
- A R Valera
- Department of Virology, Faculty of Veterinary Sciences, National University of La Plata, 60 & 118, P.O. Box 296, 1900 La Plata, Buenos Aires, Argentina
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27
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Barbeito CG, Ortega HH, Matiller V, Gimeno EJ, Salvetti NR. Lectin-Binding Pattern in Ovarian Structures of Rats with Experimental Polycystic Ovaries. Reprod Domest Anim 2013; 48:850-7. [DOI: 10.1111/rda.12174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 03/10/2013] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - V Matiller
- Cátedra de Biología Celular; Facultad de Ciencias Veterinarias; Universidad Nacional del Litoral; Esperanza; Santa Fe; Argentina
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28
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Morrell EL, Barbeito CG, Odeón CA, Gimeno EJ, Campero CM. Histopathological, Immunohistochemical, Lectinhistochemical and Molecular Findings in Spontaneous Bovine Abortions by Campylobacter fetus. Reprod Domest Anim 2011; 46:309-15. [DOI: 10.1111/j.1439-0531.2010.01668.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Flamini MA, Díaz AO, Barbeito CG, Portiansky EL. Morphology, morphometry, histochemistry and lectin histochemistry of the vagina of the plains viscacha (Lagostomus maximus). Biotech Histochem 2011; 87:81-94. [DOI: 10.3109/10520295.2010.518497] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- MA Flamini
- Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata
| | - AO Díaz
- Department of Biology, School of Exact and Natural Sciences, National University of Mar del Plata
| | - CG Barbeito
- Department of Histology and Embryology, School of Veterinary Sciences, National University of La Plata
- Department of Biology, School of Exact and Natural Sciences, National University of Mar del Plata
- Institute of Pathology, School of Veterinary Sciences, National University of La Plata,
Buenos Aires, Argentina
| | - EL Portiansky
- Institute of Pathology, School of Veterinary Sciences, National University of La Plata,
Buenos Aires, Argentina
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30
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Verdes JM, Moraña JA, Battes D, Gutiérrez F, Guerrero F, Goicoa A, Fidalgo LE, Barbeito CG, Zanuzzi CN, Portiansky EL, Gimeno EJ. Calbindin D28k expression and the absence of apoptosis in the cerebellum of Solanum bonariense L-intoxicated bovines. Vet Pathol 2009; 47:569-72. [PMID: 20234028 DOI: 10.1177/0300985809358040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Solanum bonariense intoxication is characterized by cerebellar neuronal vacuolation, degeneration, and necrosis. Cerebellar Purkinje cells seem especially susceptible, but more research is needed to determine the pathogenesis of neuronal necrosis and the mechanism of Purkinje cell susceptibility. Calbindin D28k (CbD28k) is highly expressed in Purkinje cells and has been used as a marker for normal and degenerative Purkinje cells. The goal of this study was to describe S bonariense-induced disease by ascertaining Purkinje cell-specific degenerative changes using CbD28k expression and to correlate this with apoptosis in Purkinje cells, as determined using TUNEL (transferase-mediated dUTP-biotin nick end-labeling) and ultrastructural changes. In all cases, an increase in both dose and duration of S bonariense intoxication resulted in a decrease in the number of Purkinje cells. CbD28k immunohistochemistry was an excellent marker for Purkinje cells because immunoreactivity did not change in normal or degenerative tissues. This finding suggests that excessive calcium excitatory stimulation does not induce rapid neuronal degeneration and death. As found in previous studies, TUNEL tests and electron microscopy suggest that Purkinje cell degeneration and death are not occurring via an apoptotic process. These findings suggest that S bonariense poisoning induces progressive Purkinje cell death that is not mediated by excitotoxicity or apoptotic activation.
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Affiliation(s)
- J M Verdes
- Department of Molecular and Cellular Biology (Biophysics), School of Veterinary, Universidad de la República, Av. A. Lasplaces 1550, CP 11600, Montevideo, Uruguay.
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31
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Zanuzzi CN, Fontana PA, Barbeito CG, Portiansky EL, Gimeno EJ. Paneth cells: histochemical and morphometric study in control and Solanum glaucophyllum intoxicated rabbits. Eur J Histochem 2009; 52:93-100. [DOI: 10.4081/1193] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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32
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Freijo RO, García AM, Portiansky EL, Barbeito CG, Macchi GJ, Díaz AO. Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801). Fish Physiol Biochem 2009; 35:359-367. [PMID: 18781392 DOI: 10.1007/s10695-008-9256-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Accepted: 07/27/2008] [Indexed: 05/26/2023]
Abstract
The physiological significance of the glycoproteins (GPs) secreted by the epithelium of ovarian lamellae is discussed in reference to the reproductive biology of G. blacodes. Histochemical procedures for localising and characterising GPs were used to determine the cytoplasmic components of cells of the epithelium that covers the ovarian lamellae of pink cuskeel, Genypterus blacodes (Schneider, 1801) (Pisces, Ophidiidae), during spawning. This species is one of the most valuable demersal fish resources in the Argentine Sea, mainly due its large size and flesh quality. GPs with oxidizable vicinal diol groups, sialic acid with or without O-acyl substituents, O-acyl sugars, neutral sugars and GPs with carboxyl and sulphate groups were detected. Light microscope examination showed morphological changes in the epithelium of ovarian lamellae during the spawning season, associated with a secretory activity of mucus. Optical density studies revealed the presence of polyploid cells encompassing those morphological changes. Results of the present study suggest that the epithelium of ovarian lamellae of G. blacodes performs a secretory role, which is intensified during ovarian maturity, suggesting that G. blacodes could release masses of eggs enveloped in mucus.
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Affiliation(s)
- R O Freijo
- Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3250, 3 piso, 7600, Mar del Plata, Argentina
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33
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Abstract
The lectin-binding pattern was compared in the normal and pathological uterus of sows during the ovarian cycle. The following biotinylated lectins were used: Con A, DBA, SBA, PNA, RCA-I, UEA-I and WGA. Glycoconjugate labelling showed differences between phases of ovarian cycle and presence of morphologic lesions. Cystic endometrial hyperplasia increased the RCA-I reaction in the apical region of the glandular epithelium. There was higher intensity of labelling of WGA in the glandular epithelium in uteri with endometritis. In addition, increased Con A binding in the glandular epithelium and mild reduction of UEA-I reactivity in the glycocalyx of the glandular epithelium were detected in the cases of endometritis. The results of this study show that morphologic alterations modify the sugar pattern in the porcine uterus. These modifications in glycoconjugates may be one of the reasons for decreased fertility in sows.
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Affiliation(s)
- F J F Sant'Ana
- Universidade Federal de Goiás/Campus Jataí, Jataí, Brazil
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34
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Ortega HH, Salvetti NR, Amable P, Dallard BE, Baravalle C, Barbeito CG, Gimeno EJ. Intraovarian Localization of Growth Factors in Induced Cystic Ovaries in Rats. Anat Histol Embryol 2007; 36:94-102. [PMID: 17371380 DOI: 10.1111/j.1439-0264.2006.00726.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We hypothesized that the special hormonal environment present in animals with cystic ovarian disease (COD) interferes with cellular production of growth factors (GFs). The objective of the present study was to characterize the expression of insulin-like growth factor (IGF)-I, fibroblast growth factor (FGF)-2 and vascular endothelial growth factor (VEGF) in induced COD using immunohistochemistry. We used an experimental model based on the exposure to constant light of adult rats during 15 weeks. We quantified the expression of GFs in cystic and normal ovaries by the Immunohistochemical Stained Area (IHCSA). In animals with COD, a significant reduction in the IHCSA of IGF-I in the follicular fluid, theca and granulosa layers of cysts occurred; and an increase in the interstitial tissue with regard to the control group. We found moderate immunoreactivity of FGF-2 in granulosa and theca layers of secondary and tertiary follicles and lower expression in the granulosa and theca interna layers of cystic follicles. Immunoexpression of VEGF was found in granulosa and theca cells of secondary and tertiary follicles. This study shows changes in the ovarian expression of IGF-I, FGF-2 and VEGF in induced COD. We can propose that an alteration in the control of the follicular dynamic, through the GFs, added to other features, could be involved in the ovarian cyst pathogenesis.
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Affiliation(s)
- H H Ortega
- Department of Anatomy and Histology, National University of Litoral, Santa Fe, Argentina.
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35
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Galosi CM, Barbeito CG, Martin Ocampos GP, Martinez JP, Ayala MA, Corva SG, Fuentealba NA, Gimeno EJ. An Argentine equine herpesvirus strain with special restriction patterns protect mice challenged with a pathogenic strain. J Vet Med B Infect Dis Vet Public Health 2006; 53:412-7. [PMID: 17062117 DOI: 10.1111/j.1439-0450.2006.00975.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Equine herpesvirus 1 (EHV-1) was first isolated in Argentina in 1979. This strain SPv has special restriction patterns, but a previous study demonstrated that SPv did not modify its growth in cell culture. In addition, it showed low virulence in the mouse respiratory model consistently with results found in female BALB/C at different state of gestation. This study evaluates in a mouse respiratory model, if primary infection with SPv strain protects animals from subsequent challenge with a pathogenic strain. Body weight loss was not observed in mice intranasally inoculated with SPv strain and challenged with HH1 Japanese strain. The SPv primary infection does not completely prevent clinical presentation by HH1 infection but the SPv inoculated animals recovered more quickly, with less intense and less persistent histological lesions. The challenge infection caused a rapid and prolonged increase in anti-EHV-1 antibodies in the mice previously infected with SPv, along with a more rapid reduction of viral titres in lungs. In this work it was demonstrated that this EHV-1 strain constitute a good immunogen. These results show that this SPv strain could be considered to produce an EHV-1 vaccine.
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Affiliation(s)
- C M Galosi
- Department of Virology, Faculty of Veterinary Sciences, National University of La Plata, La Plata, Buenos Aries, Argentina.
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36
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Márquez SG, Galotta JM, Portiansky EL, Barbeito CG. Characterization of Interstitial Cells of Cajal in Bowel of Cattle (Bos taurus). Vet Res Commun 2006; 30:221-9. [PMID: 16437297 DOI: 10.1007/s11259-006-3216-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2004] [Indexed: 11/29/2022]
Abstract
Interstitial cells of Cajal (ICC) have been described in the gastrointestinal tract of different mammals including humans, horses, pigs, rats, dogs, mice and guinea-pigs. In the present study, ICC were identified in the jejunum of Bos taurus using polyclonal anti-c-Kit antibodies in immunohistochemical assays. Vimentin and desmin intermediate filaments were also determined using monoclonal antibodies. ICC were found in the tunica muscularis either in a palisade distribution pattern between the outer longitudinal and the inner circular layers (ICC-MP) or freely distributed in clusters in the longitudinal layer (ICC-LM). Morphometric studies determined that ICC have a fusiform shape presenting cytoplasmic prolongations. ICC were positive to c-Kit and vimentin antigens but negative to desmin. We have observed and described for the first time the presence of ICC in a ruminant. As observed in the aforementioned mammals, bovine ICC were associated with the myenteric plexus. Nevertheless, the presence of widespread ICC in the longitudinal muscular layer of the jejunum differs from previously described studies of other mammals.
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Affiliation(s)
- S G Márquez
- Ciclo Bá sico Común, Departamento de Biología, Universidad de Buenos Aires, Buenos Aires
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37
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Abstract
This study was carried out to compare the lectin-binding pattern in the normal and pathological oviduct of sows during the ovarian cycle. Lectin-binding patterns showed differences between segments, phases of ovarian cycle and presence of morphologic lesions. In the infundibulum, it was observed that the cysts, in the follicular phase, reduced Ricinus communis-I (RCA-I) and Ulex europaeus-I (UEA-I) binding. Furthermore, in the pathological oviducts of the luteal-phase group, there is a reduction of Concanavalia ensiformis (Con-A) reactivity in this segment of the tube having wall cysts, adenomyosis and diverticulus. The Arachis hypogaea (PNA) binding in the infundibulum, during the luteal phase, decreased in the tube having adenomyosis. In animals with wall cysts, the Con-A, Triticum vulgaris (WGA) and RCA-I reactivity was minor in the glycocalyx of the isthmus epithelium during follicular phase. Con-A and Dolichos biflorus (DBA) binding pattern was minor in the luteal-phase isthmus of the tube having wall cysts, adenomyosis and diverticulus. In the ampulla, the wall cysts impaired the Con-A reaction only in the basal region of the epithelium, in the follicular phase. Binding with Con-A was decreased in the ampulla of animals in the luteal phase in the tube lesions with cysts and diverticulus. In addition, the diverticulus observed in the ampulla, during the luteal phase, reduced the PNA tubaric binding. The results of this study showed that the morphologic alterations modify the sugar pattern in the oviduct of sows. These modifications in glycoconjugates may be one of the reasons for the failure of fertility in sows.
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Affiliation(s)
- F J F Sant'ana
- Universidade Federal de Goiás/Campus Avançado de Jataí, Jataí, Belo Horizonte, Brazil
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38
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Galosi CM, Barbeito CG, Vila Roza MV, Cid de la Paz V, Ayala MA, Corva SG, Etcheverrigaray ME, Gimeno EJ. Argentine strain of equine herpesvirus 1 isolated from an aborted foetus shows low virulence in mouse respiratory and abortion models. Vet Microbiol 2004; 103:1-12. [PMID: 15381260 DOI: 10.1016/j.vetmic.2004.07.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2003] [Revised: 06/24/2004] [Accepted: 07/18/2004] [Indexed: 12/01/2022]
Abstract
The equine herpesvirus 1 (EHV-1) was isolated in Argentina from an aborted equine foetus in 1979. This virus (SPv) has special restriction patterns (RP) in comparison with other Argentine isolates. In addition, SPv could be distinguished on the basis of its pathogenicity in baby mice inoculated intracerebrally. We studied the growth properties of the SPv in cell culture and its effects in a mouse respiratory and abortion model. We observed that SPv did not modify its capacity to grow in cell culture with respect to reference HH1 strain. Nevertheless, we found significant differences between the titres of the two strains at 8-14 h post-infection (PI). In this work we demonstrated that SPv showed low virulence in female at different stages of gestation, consistently, with results found in the mouse respiratory model. We considered that this low virulence of SPv could be related to its RP because the RP of HH1 strain are similar to those of the HVS25A strain and both showed effect on pregnant mice. More specific studies about genomic alterations to the SPv are necessary for identifying, more clearly, if the intra-strain variations have relation with the low virulence in the mouse respiratory and abortion model.
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Affiliation(s)
- C M Galosi
- Department of Virology, Faculty of Veterinary Sciences, National University of La Plata, 60 and 118, P.O. Box 296, 1900 La Plata, Bs. As., Argentina.
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39
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Cobo ER, Campero CM, Gimeno EJ, Barbeito CG. Lectin Binding Patterns and Immunohistochemical Antigen Detection in the Genitalia of Tritrichomonas foetus-infected Heifers. J Comp Pathol 2004; 131:127-34. [PMID: 15276852 DOI: 10.1016/j.jcpa.2004.02.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2003] [Accepted: 02/06/2004] [Indexed: 11/29/2022]
Abstract
Heifers inoculated intra-vaginally with Tritrichomonas foetus were examined after long-term infection (70 days) and short-term infection (20 days) by lectin-histochemical, immunohistochemical and cultural techniques. The organism was recovered from the genital tract and T. foetus antigens were detected immunohistochemically in the lumina of uterine glands and cytoplasm of vaginal subepithelial macrophages. An increase of galactosylated residues (galactose and N-acetyl galactose), binding to PNA, was observed in the genital epithelium (vagina, uterus and oviduct) from infected animals. In the oviductal epithelium of short- but not long-term infected heifers, mannose (binding to Con A) was detected, suggesting that the persistent presence of T. foetus and its virulence factors or inflammatory processes result in a change in the glycoproteins of the epithelial surface. The findings have implications for the adhesion of T. foetus to cells and for the pathogenesis of bovine trichomonosis.
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Affiliation(s)
- E R Cobo
- Department of Animal Pathology, National Institute of Agricultural Technology (INTA), Balcarce, Buenos Aires, Argentina
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Fernández PE, Barbeito CG, Portiansky EL, Gimeno EJ. Lectin binding patterns in hyperplastic and metaplastic bullock prostate tissues after diethylstilbestrol administration. Vet Rec 2004; 154:298-303. [PMID: 15053137 DOI: 10.1136/vr.154.10.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hyperplasia and squamous metaplasia of the prostatic epithelium are conditions induced by oestrogens. Diethylstilbestrol (DES) has been banned from cattle used for beef production because of the health risks. The potential use of molecular markers for the detection of illegal oestrogen administration was evaluated by taking samples of prostatic tissue from control bullocks, bullocks which had been treated with oestrogens, and bullocks sacrificed 21 and 90 days after a single dose of DES. The expression of the glycoconjugates was examined by lectinhistochemistry and the lectin binding pattern was characterised in epithelium and connective tissue. In the animals sacrificed after 21 days there was an increase in the binding of one lectin (JAC) and there was an increase in the binding of one of the other lectins (DBA) in the animals sacrificed after 90 days. An increase in SWGA lectin staining was observed in the bullocks that had probably been treated with oestrogen and in the animals sacrificed 90 days after the inoculation with DES. There were also differences between the binding of SWGA in the control bullocks and the other groups.
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Affiliation(s)
- P E Fernández
- Institute of Pathology, Faculty of Veterinary Sciences, National University of La Plata, PO Box 296, 1900 La Plata, Argentina
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Barbeito CG, Flamini MA, Garcia MN, Andrés Laube PF, Andrini LB, Badrán AF. Development of compensatory hepatic hyperplasia in mice carrying the hepatocellular carcinoma ES12a. J Exp Clin Cancer Res 2002; 21:397-400. [PMID: 12385584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
In a previous paper we reported that the presence of the hepatocellular carcinoma SS1K in host mice resulted in an earlier appearance of the hepatocyte mitotic peak during liver regeneration after a partial hepatectomy as well as in an increase in the amplitude of that mitotic wave. In the present work we analyse the effect of another hepatocellular carcinoma, the ES12a (HCES12a). Adult male mice of the C3H/S strain standardised for circadian-periodicity analysis, were used. One group received a subcutaneous graft of the HCES12a tumor, while another group served as control. Fifteen days later, all animals were submitted to a partial (70%) hepatectomy at 10:00 h and beginning at 16:00 h lots of between 5 and 9 host and control animals each were sacrificed at 4 h intervals until 16:00 h on the third day thereafter. All mice were injected with 2 microg/g colchicine 4 hrs before killing, and samples of livers were processed for hematoxylin-eosin staining. We determined the hepatocyte mitotic index for each animal and the mean value +/- the standard error of the mean for each lot. The peak of mitotic activity in the tumor-bearing animals took place four hours earlier than in control mice but the average values of hepatocytic mitotic activity were similar in both groups
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Affiliation(s)
- C G Barbeito
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Buenos Aires, Argentina.
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Abstract
Tongue keratinocytes have a high mitotic index (MI) with an evident circadian variation. Our study set out to compare and contrast two phases of the cell cycle: DNA synthesis (S-phase), with inmunocytochemical detection by bromodeoxyuridine (BrdU), and mitosis (M-phase), by the colchicine-arrest of metaphase method, exploring both the dorsal and ventral surfaces of the mouse tongue throughout a circadian period. Adult male mice standardized for light periodicity used for MI experiment were injected intraperitoneally with colchicine. Other animals were injected intraperitoneally with 5-BrdU for S-phase determination. Animals given both treatments were divided into six groups and killed at 4 h intervals until 20:00 h. Tongue samples were processed for histology and immuno-histochemistry. S and M indices were expressed as labelled nuclei or colchicine metaphases, respectively, per 1000 nuclei. Peak MI occurred at 12:00, with the minimum value at 20:00 on dorsal and ventral tongue surfaces. Peak S-phase was at 04:00, whereas the minimum value was at 16:00 for both surfaces. These results show that the proliferative activity of the tongue epithelium is of similar intensity and temporal distribution on both surfaces.
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Affiliation(s)
- M N García
- Instituto de Embriología, Biología e Histología, Fac. de Cs. Médicas (60 y 120), U.N.L.P., La Plata, Argentina.
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Barbeito CG, Garcia MN, Flamini MA, Andrini LB, Badrán AF. Effect of partial and sham hepatectomy on the growth of a hepatocellular carcinoma. J Exp Clin Cancer Res 2001; 20:153-8. [PMID: 11370822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
We examined the effect of partial hepatectomy on the proliferation of hepatoma ES12a grafted into C3H/S mice compared to tumor growth in sham-hepatectomized controls. The animals were sacrificed every 4 hrs during three days from the 6th to the 78th h following each type of surgery. Unoperated tumor-bearing mice were likewise killed as controls, but only during one complete circadian period. All animals received 2 microg of colchicine per g of body weight intraperitoneally 4 hrs before decapitation. Measurement of mitotic indices in hematoxylineosin-stained tumor samples revealed a decrease in proliferation and a modification of the diurnal mitotic-activity profile in the hepatectomized and sham-operated animals from the first day after surgery. These differences persisted by the third postoperative day only in the hepatectomized animals. Thus, although surgical stress may initially affect tumor growth, the latter results must be the effect of the influence of the hepatic regeneration.
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Affiliation(s)
- C G Barbeito
- Cátedra de Histología y Embriología A, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Republica Argentina.
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Barbeito CG, Surur JM, Badrán AF. Mitotic activity of the pars intermedia in the female mouse: age-associated variations in proliferation rate and circadian periodicity. Chronobiol Int 2000; 17:751-6. [PMID: 11128291 DOI: 10.1081/cbi-100102110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We previously reported daily variations in the mitotic activity of the endocrine cells in the pars intermedia of 21- and 28-day-old male mice. Since cellular proliferation might be affected by factors such as sex and age, we undertook the present experiments to study the mitotic activity of the pars intermedia from 14-, 28-, and 150-day-old female mice. Inbred C3H/S mice, grouped according to age, were housed under standard conditions (12h each of light and dark [LD 12:12]) for periodicity analysis and were killed in lots of 5-11 animals every 4h over a single 24h cycle, with each mouse receiving 2 microg/g of colchicine 4h before decapitation. Pituitaries were excised, extracted, fixed in buffered formaldehyde, embedded in celloidin-paraffin, sectioned at 5 microm, and stained with hematoxylin and eosin. We counted the total number of nuclei to estimate the total number of cells monitored and then calculated the mitotic index (metaphases/1000 nuclei). Differences were analyzed for statistical significance by the Student t test. While the 14-day-old animals manifested no significant changes in mitotic activity during the 24h cycle, the 28- and 150-day-old mice showed higher mitotic indices during the period of darkness. The average mitotic activity over the entire cycle, however, was higher in the two groups of younger animals than in the 150-day-old mice. Moreover, the averages for the 28-day-old females were higher than the corresponding values previously reported by us for male mice of the same age.
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Affiliation(s)
- C G Barbeito
- Institute of Biology, Embriology, and Histology, School of Medicine, National University of La Plata, Buenos Aires, Argentina
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Fernández PE, Barbeito CG, Portiansky EL, Gimeno EJ. Intermediate filament protein expression and sugar moieties in normal canine placenta. Histol Histopathol 2000; 15:1-6. [PMID: 10668189 DOI: 10.14670/hh-15.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the female dog, the placenta is considered zonal, endotheliochorial and labyrinthic. The distribution of the intermediate filaments as well as the surface glycoproteins in the canine placenta are still unknown. The aim of the present study was to provide this information for further understanding of pathological conditions in the bitch. Samples were obtained from normal uterine horns at the end of gestation. Tissues were routinely fixed and stained. Monoclonal antibodies against cytokeratins, vimentin and desmin were used for immunohistochemical staining. UEA-1, PNA, RCA-1, SBA, DBA, WGA and ConA were used for the lectin histochemical staining. A computer morphometrical analysis was made. Statistical analysis was then accomplished. The results showed the maximum immunohistochemical percentage for vimentin in the supraglandular connective tissue, for pancytokeratin in the spongy zone and for desmin in miometrium. SBA showed the highest staining percentage in the gland cells of the spongy zone, while ConA was the highest in the syncytiotrophoblastic cells and gland cells of the deep glandular zone. The results obtained indicate that the lectin binding pattern is partially different from other animal species. On the contrary, the intermediate filament data coincide with similar observations from other mammals.
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Affiliation(s)
- P E Fernández
- Institute of Pathology, School of Veterinary Sciences, National University of La Plata, Argentina.
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Fernández PE, Portiansky EL, Barbeito CG, Gimeno EJ. Characterisation of cytotrophoblastic-like cells present in subinvolutioned placental sites of the bitch. Histol Histopathol 1998; 13:995-1000. [PMID: 9810494 DOI: 10.14670/hh-13.995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper describes an approach to study the cells present in the subinvolution of placental sites (SIPS), a pathological post partum condition of the bitch that causes persistent hemorrhage of the genital tract. The expression of intermediate filament proteins was examined to determine the fetal or maternal origin of the cytotrophoblastic-like cells found in this entity. Lectin binding on tissue sections were also studied to characterise cellular glycoconjugates. Image processing and morphometrical analysis of the histological images were done. The results revealed that the cells observed in bitches with SIPS expressed pancytokeratins but neither vimentin nor desmin, in coincidence with normal cytotrophoblasts. The lectin binding pattern of both types of cells was similar, with the only exception of Arachis hypogaea agglutinin (PNA) and Triticum vulgaris agglutinin (WGA). These observations, in addition to the non statistically significant differences between morphometrical characteristics of cytotrophoblastic and cytotrophoblastic-like cells in SIPS, might suggest the fetal origin of the latter cells which could play a role in the pathogenesis of this entity.
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Affiliation(s)
- P E Fernández
- Institute of Pathology, Prof. Dr. Bernardo Epstein, School of Veterinary Sciences, National University of La Plata, Argentina
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Reyna JC, Barbeito CG, Badrán AF, Moreno FR. [Mitotic activity of duodenal-crypt enterocytes in mice with hepatocarcinoma]. Medicina (B Aires) 1998; 57:708-12. [PMID: 9674192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Tumors grafted into mice may modify the proliferation of normal cell populations. In this paper, we have studied the evolution of mitotic activity (MA) in duodenal-crypt enterocytes of ES12a hepatocarcinoma-bearing mice; a total of 87 28-day-old female animals of the C3H/S strain were used after standardization for circadian-periodicity analysis. The mice were distributed into two groups: those remaining intact and those receiving tumor grafts. Each group was then divided into six batches (n = 6-10), one of which was sacrificed every 4 h over a period of one day. A dose of colchicine (2 micrograms/g) was administered to each animal 4 h before killing. Samples of duodenum were fixed in 10% (v/v) buffered formalin and processed for assessment of mitotic activity. The number and topographic localization of the colchicine-arrested metaphases were recorded among the entero-cytes within 20 longitudinal sections of the duodenal crypts in each animal. From these data the mitotic indices over the total crypt-cell population as well as within each previously-established zone were determined along with mean +/- SEM for each experimental group. The statistical significance of the differences among the data were analyzed by Student t test. The results show that the presence of ES12a tumor inhibits the mitotic activity of the duodenal-crypt enterocytes and produces an apparent temporal shift in the peak and trough within the circadian curve for this growth parameter.
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Affiliation(s)
- J C Reyna
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, La Plata, Argentina
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