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Bicho RC, Faustino AMR, Rêma A, Scott-Fordsmand JJ, Amorim MJB. Confirmatory assays for transient changes of omics in soil invertebrates - Copper materials in a multigenerational exposure. J Hazard Mater 2021; 402:123500. [PMID: 32712356 DOI: 10.1016/j.jhazmat.2020.123500] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 03/04/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Environmental risk assessment (ERA) based on effects caused by chronic and longer term exposure is highly relevant. Further, if mechanistic based approaches (e.g. omics) can be included, beyond apical endpoints (e.g. reproduction), the prediction of effects increases. For Cu NMs (and CuCl2) this has been studied in detail, covering multi-omics and apical effects using the soil standard species Enchytraeus crypticus. The intermediate level effects like cell/tissue and organ alterations represent a missing link. In the present study we aimed to: 1) perform long term exposure to Cu materials (full life cycle and multigeneration, 46 and 224 days) to collect samples; 2) perform histology and immunohistochemistry on collected samples at 12 time points and 17 treatments; 3) integrate all levels of biological organization onto an adverse outcome pathway (AOP) framework. CuO NMs and CuCl2 caused both similar and different stress response, either at molecular initiating events (MIE) or key events (KEs) of higher level of biological organization. Cell/Tissue and organ level, post-transcriptional and transcriptional mechanisms, through histone modifications and microRNA related protein, were similarly affected. While both Cu forms affected the Notch signalling pathway, CuCl2 also caused oxidative stress. Different mechanisms of DNA methylation (epigenetics) were activated by CuO NMs and CuCl2 at the MIE.
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Affiliation(s)
- Rita C Bicho
- Department of Biology & CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - A M R Faustino
- Department of Pathology and Molecular Immunology, Biomedical Sciences Institute of Abel Salazar, University of Porto, 4050-313, Porto, Portugal
| | - A Rêma
- Department of Pathology and Molecular Immunology, Biomedical Sciences Institute of Abel Salazar, University of Porto, 4050-313, Porto, Portugal
| | - Janeck J Scott-Fordsmand
- Department of Bioscience, Aarhus University, Vejlsovej 25, PO BOX 314, DK-8600, Silkeborg, Denmark
| | - Mónica J B Amorim
- Department of Biology & CESAM, University of Aveiro, 3810-193, Aveiro, Portugal.
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Pazzini J, Serafim E, Uscategui R, Almeida V, Oliva C, Gärtner F, Amorim I, Faria F, Rêma A, Reis Filho N, Ferreira M, Silva A, Huppes R, Moraes P, Oliveira J, Nardi A. Surgical sponge associated with platelets rich plasma in skin mesh grafts and layer in rabbits (Oryctolagus cuniculus). ARQ BRAS MED VET ZOO 2018. [DOI: 10.1590/1678-4162-9560] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The aim of this study was to evaluate of the efficacy of PRP employment associated with surgical sponges to improve the integration of the graft in the recipient bed. It was held at the Veterinary Hospital UNESP, Campus of Jaboticabal - SP, a study of 64 rabbits, divided into eight groups with eight animals. The groups were divided in control with saline solution 0,9%, control with PRP both without the sponge, surgical sponge with PRP, surgical sponge without PRP, and were used mesh and layer grafts in the respective groups. The data were submitted to statistical analysis (paired t-test, Kruskal-Wallis test, with subsequent use of the multiple comparison tests of Dunn, analysis of variance (F) test, Tukey test, P< 0.05). Edema and exudate with 3 and 3 and 7 days (P= 0,03 e P= 0,0049); coloring on the 14th day (P= 0,0001); cosmetic appearance on the 7th and 14th day (P= 0,0026 and P= 0,0001); mononuclear cells (P= 0,01) and polymorphonuclear (P= 0,01); fibroblast proliferation (P= 0,01); collagenous (P= 0,05); hemorrhage (P-007); necrosis and re-epithelialization (P= 0,2928 and P= 0,1). We concluded that the use of Platelet Rich Plasma Gel on skin grafts associated with a sponge as a compressive dressing promote the skin graft survival without a previous granulation tissue.
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Affiliation(s)
| | | | | | | | | | | | | | | | - A. Rêma
- Universidade do Porto, Portugal
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3
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Saraiva AL, Payan-Carreira R, Gärtner F, Santana I, Rêma A, Lourenço LM, Pires MA. Immunohistochemical Expression of Cyclooxygenase-2 (COX-2) in Feline Endometrial Adenocarcinoma and in Normal and Hyperplastic Endometria. Reprod Domest Anim 2015; 50:333-340. [DOI: 10.1111/rda.12497] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/13/2015] [Indexed: 11/30/2022]
Affiliation(s)
- AL Saraiva
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
- Escola Universitária Vasco da Gama (EUVG); Coimbra Portugal
| | - R Payan-Carreira
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - F Gärtner
- Abel Salazar Institute of Biomedical Sciences (ICBAS); University of Porto; Porto Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP); Porto Portugal
| | - I Santana
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - A Rêma
- Abel Salazar Institute of Biomedical Sciences (ICBAS); University of Porto; Porto Portugal
| | - LM Lourenço
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - MA Pires
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
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Flores AR, Rêma A, Carvalho F, Lopes G, Faustino A, Dias Pereira P. Clinicopathological significance of immunoexpression of claudin-1 and claudin-7 in feline mammary carcinomas. J Comp Pathol 2014; 151:339-46. [PMID: 25246182 DOI: 10.1016/j.jcpa.2014.07.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 07/21/2014] [Accepted: 07/28/2014] [Indexed: 01/16/2023]
Abstract
Claudins (CLDNs) are tight junction proteins that have a role in regulating cell adhesion and polarity, paracellular permeability, proliferation and differentiation. Several immunohistochemical studies have shown reduced expression of CLDN-1 and CLDN-7 in human and canine mammary carcinomas, suggesting that these proteins may participate in mammary carcinogenesis, invasion and metastasis. The present study characterizes expression of CLDN-1 and CLDN-7 in feline mammary carcinomas (n = 52) and their metastases (n = 29). There was an inverse association between CLDN-7 expression and histological grade of tumour. Reduced expression of CLDN-7 was significantly associated with decreased tubule formation, high proliferative activity and metastasis. No significant associations were found between CLDN-1 expression and any of these features. Evaluation of expression of CLDN-7, but not CLDN-1, may therefore provide prognostic information, assisting in the diagnosis of a subgroup of aggressive feline mammary carcinomas that share some features with the recently described 'claudin-low' subgroup of human breast cancer.
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Affiliation(s)
- A Rute Flores
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal
| | - A Rêma
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal
| | - F Carvalho
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal
| | - G Lopes
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal
| | - A Faustino
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal
| | - P Dias Pereira
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira N°228, 4050-313 Porto, Portugal.
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Marques O, Porto G, Rêma A, Faria F, Pinto J, da Silva B, Lopes C. Iron (De)Regulation in Breast Cancer: a Role for Stromal Inflammatory Cells in the Tumor Microenvironment. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu067.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Flores AR, Rêma A, Carvalho F, Faustino A, Dias Pereira P. Reduced expression of claudin-2 is associated with high histological grade and metastasis of feline mammary carcinomas. J Comp Pathol 2013; 150:169-74. [PMID: 24220012 DOI: 10.1016/j.jcpa.2013.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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: 04/09/2013] [Revised: 07/09/2013] [Accepted: 09/09/2013] [Indexed: 10/26/2022]
Abstract
Claudins (CLDNs) are a family of tight junction (TJ) proteins that play an important role in maintaining cell polarity, in controlling paracellular ion flux and in regulating cell proliferation and differentiation. There is a growing body of evidence that associates changes in CLDN expression with the development of human breast cancer. In the present study CLDN-2 expression was examined immunohistochemically in samples of normal feline mammary tissue (n = 5) and mammary carcinomas (n = 52), including metastatic lesions (n = 29). Seventy-seven percent of carcinomas showed reduced CLDN-2 expression compared with that observed in normal mammary gland. Reduced expression of CLDN-2 was significantly associated with a high histological grade of carcinoma (P = 0.011), with 88.6% of grade II/III carcinomas showing decreased expression. Furthermore, CLDN-2 down-regulation was significantly associated with metastatic disease (P = 0.0027), with 93.1% of cases with signs of metastasis showing decreased expression of this protein. CLDN-2 may constitute a molecular marker for identification of a subgroup of feline mammary carcinomas characterized by high histological grade and the development of metastasis.
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Affiliation(s)
- A R Flores
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - A Rêma
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - F Carvalho
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - A Faustino
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - P Dias Pereira
- Instituto de Ciências Biomédicas de Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
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Marques O, Canadas A, Rêma A, Faria F, Simão J, Gärtner F, Martins da Silva B, Porto G, Lopes C. Hepcidin Expression in Canine and Feline Mammary Tumours. J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cassali G, Silva P, Rêma A, Gärtner F, Gobbi H, Tafuri W, Schmitt F. A new methodology for the improvement of diagnostic immunohistochemistry in canine veterinary pathology: automated system using human monoclonal and polyclonal antibodies. ARQ BRAS MED VET ZOO 2001. [DOI: 10.1590/s0102-09352001000300010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The authors describe their experience with an automated immunohistochemical system applied to canine tissue samples. Twenty human cellular markers specific monoclonal and polyclonal antibodies and two different antigen retrieval methods were used in normal and neoplastic breast tissue, as well as skin samples obtained from female dogs of pure and mixed breeds. The antibodies tested were the most frequently used in human and veterinary medicine studies, employed with diagnostic purposes in breast pathology, as well as in cancer research. Most of them may be used to study other normal and abnormal tissues and included cytokeratins, progesterone receptor, c-erbB2, p53, MIB-1, PCNA, EMA, vimentin, desmin, alpha-actin, S-100, pan-cadherin, and E-cadherin. The results demonstrated that using an automated staining system it is possible to use different human markers in veterinary pathology. The advantages of automated immunohistochemistry are improved quality, reproducibility, speed, and standardisation.
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Affiliation(s)
| | | | - A. Rêma
- Universidade do Porto, Portugal
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