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De Luján Corbo M, Enriquez L, Rodríguez G, Sarancone S, Nocito AL. [Primary pulmonary rabdomyosarcoma: clinical-pathological and immunohistochemical findings]. Medicina (B Aires) 2022; 82:781-783. [PMID: 36220039] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023] Open
Abstract
Pulmonary rhabdomyosarcona is a rare entity and the histopatological differential diagnosis can be difficult. We report on a case of a 48-year-old male patient with a neoplasm located at the hilum of the right lung. The histological study of the lobectomy specimen allowed the diagnosis of embryonal rhabdomyosarcoma to be made. Given the absence of tumor lesions in other sites, it was classified as primary pulmonary neoplasm. The patient underwent chemotherapy and subsequently a completion pneumonectomy for recurrence of the tumor. One year after the initial surgery, he presented a metastasis in the right adrenal gland. He died 20 months after the original diagnosis. The importance of immunohistochemistry in the diagnosis is emphasized and the different theories that attempt to explain the histogénesis of these tumors in unusual sites are analyzed.
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Affiliation(s)
- María De Luján Corbo
- Cátedra de Anatomía Patológica, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | - Lucía Enriquez
- Cátedra de Anatomía Patológica, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | | | - Sandra Sarancone
- Laboratorio Quantum, Clínica de Diagnóstico por Imágenes, Rosario, Santa Fe, Argentina
| | - Ana Lía Nocito
- Cátedra de Anatomía Patológica, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina. E-mail:
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González Roffo A, Gómez Escalante JI, Banfi N, Nocito AL, Báez A, Casas Parera I. [Immunohistochemical analysis for the diagnosis of solitary fibrous tumor/ hemangiopericytoma]. Medicina (B Aires) 2020; 80:729-733. [PMID: 33254126] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Abstract
The solitary fibrous tumor/ hemangiopericytoma (TFS/HP) is a rare mesenchymal extraaxial tumour. TFS/HP can sometimes be difficult to distinguish from other extra-axial tumors like meningioma, which can be clinically and radiologically indistinguishable. Molecular analysis with STAT6 (signal transducer and activator of transcription 6) nuclear expression or NAB2-STAT6 (NGFI-A binding protein 2) fusion is recommended to confirm the diagnosis. We present 3 cases, 2 women and 1 male, with pathological diagnosis of meningothelial meningioma in the first case; cases 2 and 3 with radiological suspicion of meningioma. The pathological review with molecular study certified the diagnosis of TFS/HP. For differential diagnosis between meningeal TFS/HP and meningioma, it is recommended to look for STAT6 expression as a first step, or NAB2-STAT6 fusion in order to confirm TFS/HP. The review of biopsy samples must be guaranteed in all patients, including those who were studied in Pathology Services Level 3.
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Affiliation(s)
- Alejandra González Roffo
- Departamento de Neurología, Centro Universitario de Neurooncología, Instituto de Oncología ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Argentina. E-mail:
| | - José I Gómez Escalante
- Departamento de Patología, Instituto de Oncología ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Néstor Banfi
- Servicio de Neurología, Hospital Provincial del Centenario, Rosario, Santa Fe, Argentina
| | - Ana Lía Nocito
- Cátedra de Anatomía Patológica, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Santa Fe, Argentina
| | - Alejandra Báez
- Departamento de Neurología, Centro Universitario de Neurooncología, Instituto de Oncología ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Ignacio Casas Parera
- Departamento de Neurología, Centro Universitario de Neurooncología, Instituto de Oncología ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Argentina
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Rico MJ, Perroud HA, Herrera C, Alasino CM, Roggero EA, Pezzotto SM, Nocito AL, Rozados VR, Scharovsky OG. Putative Biomarkers of Response to Treatment in Breast Cancer Patients: A Pilot Assay. Cancer Invest 2017; 35:377-385. [DOI: 10.1080/07357907.2017.1309545] [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: 12/12/2022]
Affiliation(s)
- María J. Rico
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
- National Scientific and Technological Research Council (CONICET), Rosario, Argentina
| | - Herman A. Perroud
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
- National Scientific and Technological Research Council (CONICET), Rosario, Argentina
| | - Cintia Herrera
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
| | | | - Eduardo A. Roggero
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
| | - Stella M. Pezzotto
- Institute of Immunology, School of Medical Sciences, National University of Rosario, Rosario, Argentina
- National University of Rosario Research Council (CIUNR), Rosario, Argentina
| | - Ana Lía Nocito
- Department of Pathological Anatomy and Physiology, School of Medical Sciences, National University of Rosario, Rosario, Argentina
| | - Viviana R. Rozados
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
| | - O. Graciela Scharovsky
- Institute of Experimental Genetics, School of Medicine, National University of Rosario, Rosario, Argentina
- National Scientific and Technological Research Council (CONICET), Rosario, Argentina
- National University of Rosario Research Council (CIUNR), Rosario, Argentina
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Lardizábal MN, Rodríguez RE, Nocito AL, Daniele SM, Palatnik JF, Veggi LM. Alteration of the microRNA-122 regulatory network in rat models of hepatotoxicity. Environ Toxicol Pharmacol 2014; 37:354-364. [PMID: 24388909 DOI: 10.1016/j.etap.2013.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 09/12/2013] [Revised: 12/12/2013] [Accepted: 12/13/2013] [Indexed: 06/03/2023]
Abstract
MicroRNAs are small RNA molecules that post-transcriptionally regulate gene expression. MicroRNA-122 is the most abundant and specific liver microRNA. Hepatotoxicity involves a significant alteration of liver gene expression. The aim of this work was to evaluate the microRNA-122 regulatory network in models of hepatotoxicity induced by thioacetamide or carbon tetrachloride. We report that the toxins decreased the expression of microRNA-122, which corresponded with an increase in two target genes: Cyclin G1 and the cationic amino acid transporter CAT-1. We found a decreased expression of its precursor, pri-microRNA-122, and of the transcription factors that specifically bind its promoter: CCAAT/enhancer-binding protein alpha, and members of the hepatocyte nuclear factor family. Therefore, microRNA-122 expression levels are under transcriptional control during hepatotoxicity. We propose that the changes observed are associated with the liver response to cope with the injury caused by the hepatotoxins, likely through a cell proliferation process to repair the damaged tissue.
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Affiliation(s)
| | | | - Ana Lía Nocito
- Facultad de Ciencias Médicas, Universidad Nacional de Rosario (UNR), Rosario, S2002LRL, Argentina.
| | - Stella Maris Daniele
- Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Rosario, S2002LRL, Argentina.
| | | | - Luis María Veggi
- IFISE, CONICET-UNR, Rosario, S2002LRL, Argentina; Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Rosario, S2002LRL, Argentina.
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Gorosito M, Pancera B, Sarancone S, Nocito AL. Gonadoblastoma: an unusual ovarian tumor. Ann Diagn Pathol 2010; 14:247-50. [DOI: 10.1016/j.anndiagpath.2010.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/05/2010] [Accepted: 03/11/2010] [Indexed: 10/19/2022]
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Pérez AR, Fontanella GH, Nocito AL, Revelli S, Bottasso OA. Short treatment with the tumour necrosis factor-alpha blocker infliximab diminishes chronic chagasic myocarditis in rats without evidence of Trypanosoma cruzi reactivation. Clin Exp Immunol 2009; 157:291-9. [PMID: 19604269 DOI: 10.1111/j.1365-2249.2009.03946.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tumour necrosis factor (TNF)-alpha is crucial for resistance to Trypanosoma cruzi acute infection, but there is scant information on its role during the chronic phase. To address this issue, we analysed whether a short treatment with a TNF-alpha blocker affected the course and characteristics of chronic disease in a rat experimental model of T. cruzi infection. An anti-TNF-alpha agent (infliximab) was administered during the chronic phase for a period of 4 weeks (3 mg/kg/week), while control infected rats were inoculated with saline physiological solution. Search for parasites yielded non-successful results in all infected groups, irrespective of treatment. Nevertheless, the presence of T. cruzi kDNA in heart tissue was detected in infected and infected plus treated animals. Because infliximab might induce changes in the anti-parasite cytokine response, circulating levels of interleukin (IL)-10, interferon-gamma and nitric oxide were evaluated. An increase in IL-10 levels was observed only in the infected group treated with the anti-TNF-alpha blocker compared to the remaining groups (P < 0.05). A clear attenuation of histological damage associated with a diminution of cardiac TNF-alpha mRNA expression was observed in the infected and treated animals compared to the infected and non-treated group. Blocking of TNF-alpha during a relatively short period in chronically infected rats did not lead to evident parasite reactivation but reduced myocarditis severity significantly, indicating a role of this cytokine in the pathogenesis of chronic myocardial damage.
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Affiliation(s)
- A R Pérez
- Instituto de Inmunologia, Facultad de Ciencias Médicas de Rosario, Universidad Nacional de Rosario, Argentina.
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Fontanella GH, De Vusser K, Laroy W, Daurelio L, Nocito AL, Revelli S, Contreras R. Immunization with an engineered mutant trans-sialidase highly protects mice from experimental Trypanosoma cruzi infection: a vaccine candidate. Vaccine 2008; 26:2322-34. [PMID: 18403070 DOI: 10.1016/j.vaccine.2008.02.060] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [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: 02/01/2007] [Revised: 02/21/2008] [Accepted: 02/28/2008] [Indexed: 01/22/2023]
Abstract
Chagas' disease is a major tropical disease for which a cure for chronic phase does not exist yet. Trypanosoma cruzi trans-sialidase (TS) seems to be involved in relevant processes such as infectivity, host survival and, very importantly, disease pathogenesis. In this study, we show that mice vaccinated with an engineered enzymatically deficient mutant TS containing the catalytic domain without the immunodominant SAPA (Shed Acute Phase Antigen) repeats, were highly protected against T. cruzi infection. Adult male BALB/c mice were immunized with mutant protein, purified from Pichia pastoris yeast, using three inoculations in Freund's adjuvant. All immunized mice were protected against challenge with a lethal dose of T. cruzi trypomastigotes. The protected immunized mice developed no clinical or tissue evidence of infection throughout the study. In contrast, 60-90% mortality and 100% occurrence of myocardial lesions were observed in the non-immunized counterparts. Titers of circulating antibody against TS did not correlate with protection, while anti-SAPA antibodies were coincident with disease severity. Further studies indicated that a single inoculation of mutant recombinant protein in Freund's complete adjuvant was not associated with blood or organic alterations, per se. Mutant TS vaccination seems to be a promising tool for immune intervention strategies in Chagas' disease, aimed at preventing T. cruzi-related heart tissue damage.
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Affiliation(s)
- Germán H Fontanella
- Instituto de Inmunología, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Argentina
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Fontanella GH, Pascutti MF, Daurelio L, Perez AR, Nocito AL, Wojdyla D, Bottasso O, Revelli SS, Stanford JL. Improved outcome of Trypanosoma cruzi infection in rats following treatment in early life with suspensions of heat-killed environmental Actinomycetales. Vaccine 2006; 25:3492-500. [PMID: 17368877 DOI: 10.1016/j.vaccine.2006.11.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 10/10/2006] [Revised: 11/20/2006] [Accepted: 11/28/2006] [Indexed: 01/12/2023]
Abstract
The well-established model of Chagas' disease in "l" rats was used to evaluate the effects of three injections of heat-killed Gordonia bronchialis, Rhodococcus coprophilus or saline on Trypanosoma cruzi parasitaemia and acute and chronic myocarditis, sequelae of the infection. Two vaccinating injections were given prior to challenge with T. cruzi, and the third, immunotherapeutic, injection was given 7 days after challenge. Treatment with either actinomycete significantly reduced acute parasitaemia (p<0.04), modified cellular infiltration during acute myocarditis and limited chronic myocarditis (p<0.03) in comparison with the saline-treated control animals. Immunological investigations showed that both bacterial preparations achieved their results through different mechanisms. The relevance of our findings to human Chagas' disease is discussed.
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Affiliation(s)
- G H Fontanella
- Instituto de Inmunología, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Santa Fe 3100, 2000 Rosario, Santa Fe, Argentina
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Pascutti MF, Pitashny M, Nocito AL, Guermonprez P, Amigorena S, Wietzerbin J, Serra E, Bottasso O, Revelli S. Benznidazole, a drug used in Chagas' disease, ameliorates LPS-induced inflammatory response in mice. Life Sci 2005; 76:685-97. [PMID: 15567193 DOI: 10.1016/j.lfs.2004.09.013] [Citation(s) in RCA: 21] [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: 03/22/2004] [Accepted: 08/19/2004] [Indexed: 11/27/2022]
Abstract
Benznidazole (BZL) is a drug currently used for treating Chagas' disease. Given our earlier demonstration in which BZL downregulated cytokine and nitric oxide (NO) synthesis by LPS and/or IFN-gamma-stimulated murine macrophages, we have now analysed whether this compound could exert beneficial effects in a model of LPS-induced inflammation in C57BL/6 mice. The lethal model consisted of two LPS intraperitoneal injections, 200 microg each separated by 2 h, with BZL given orally at a dose of 200 mg/kg, 18 and 2 h before the first challenge and 20 and 44 hr following the second one. In this model, BZL treatment led to a significantly decreased mortality in comparison with untreated counterparts. Remaining experiments were carried out in mice given a unique LPS dose, pretreated with BZL or not, since those subjected to the lethal protocol were unsuitable for laboratory handling. Analysis of IL-1beta, IL-6, TNF-alpha, IL-12 and iNOS mRNA expression in liver samples taken at 90 min post-LPS showed a marked reduction of the two latter mRNAs in BZL-treated mice. These animals also displayed significantly decreased peaks levels of serum TNF-alpha and IL-6, accompanied by a diminished number of IL-6-producing peritoneal macrophages. Present effects may broaden the potential usefulness of BZL in situations accompanied by an excessive inflammatory response.
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Affiliation(s)
- María Fernanda Pascutti
- Instituto de Inmunología, Facultad de Ciencias Médicas, Santa Fe 3100, 2000, Rosario, Argentina
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Cavatorta AL, Fumero G, Chouhy D, Aguirre R, Nocito AL, Giri AA, Banks L, Gardiol D. Differential expression of the human homologue of drosophila discs large oncosuppressor in histologic samples from human papillomavirus-associated lesions as a marker for progression to malignancy. Int J Cancer 2004; 111:373-80. [PMID: 15221964 DOI: 10.1002/ijc.20275] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.6] [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: 11/06/2022]
Abstract
High-risk HPVs play a causal role in the development of cervical cancer, and their E6 oncoproteins target h-Dlg for ubiquitin-mediated proteolysis. The h-Dlg oncosuppressor is associated with cell-cell interactions, and deregulation of these structures leads to defective cell adhesion, loss of cell polarity and unregulated proliferation. We evaluated the contribution of this E6 activity in the progression to malignancy in HPV infections by analyzing h-Dlg expression in HPV-associated lesions. We analyzed h-Dlg in cervical, laryngeal, vulvar, colon and kidney histologic samples by Dlg immunohistochemistry. HPV association was ascertained by a PCR-colorimetric method. Although Dlg was certainly expressed in intraepithelial cervical, vulvar and laryngeal HPV-associated lesions, its cellular and tissue distribution patterns were altered compared to normal tissue. However, marked reduction in Dlg levels was observed in HPV-positive invasive cervical carcinomas. To elucidate whether the loss of Dlg was significant for carcinogenesis in general, we investigated Dlg expression in tumors not associated with HPV. In colon and kidney carcinomas, Dlg was expressed, albeit with a different pattern of distribution with respect to the normal tissue. The loss of Dlg may be considered a late-stage marker in cervical carcinogenesis, but alterations in its expression and localization take place during the different dysplastic stages. Dlg downregulation and/or alterations in its localization may contribute to transformation and may explain some of the characteristics of the malignant cells, such as loss of polarity and high migration ability.
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Affiliation(s)
- Ana Laura Cavatorta
- Departamento de Microbiología, Facultad de Ciencias Bioquímicas, Instituto de Biología Molecular y Celular de Rosario, Rosario, Argentina
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