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Petaccia de Macedo M, Toledo Nascimento EC, Soares FA, Costa Santini F, D'Almeida Costa F, Werneck da Cunha I, Ramella Munhoz R, De Marchi P, Carnier Jorge TW, Ramos Moreira Leite K. Brazilian Expert Consensus for NTRK Gene Fusion Testing in Solid Tumors. Clin Med�Insights�Pathol 2023; 16:2632010X231197080. [PMID: 37719804 PMCID: PMC10504829 DOI: 10.1177/2632010x231197080] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 07/31/2023] [Indexed: 09/19/2023]
Abstract
Oncogenic neurotrophic tropomyosin receptor kinase gene fusions occur in less than 1% of common cancers. These mutations have emerged as new biomarkers in cancer genomic profiling with the approval of selective drugs against tropomyosin receptor kinase fusion proteins. Nevertheless, the optimal pathways and diagnostic platforms for this biomarker's screening and genomic profiling have not been defined and remain a subject of debate. A panel of national experts in molecular cancer diagnosis and treatment was convened by videoconference and suggested topics to be addressed in the literature review. The authors proposed a testing algorithm for oncogenic neurotrophic tropomyosin receptor kinase gene fusion screening and diagnosis for the Brazilian health system. This review aims to discuss the latest literature evidence and international consensus on neurotrophic tropomyosin receptor kinase gene fusion diagnosis to devise clinical guidelines for testing this biomarker. We propose an algorithm in which testing for this biomarker should be requested to diagnose advanced metastatic tumors without known driver mutations. In this strategy, Immunohistochemistry should be used as a screening test followed by confirmatory next-generation sequencing in immunohistochemistry-positive cases.
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Affiliation(s)
| | | | - Fernando Augusto Soares
- Rede D'Or São Luiz, São Paulo, Brazil
- D'Or Institute for Research and Teaching (IDOR), São Paulo, Brazil
| | | | | | - Isabela Werneck da Cunha
- Rede D'Or São Luiz, São Paulo, Brazil
- D'Or Institute for Research and Teaching (IDOR), São Paulo, Brazil
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Camargo JAD, Lopes RE, Ferreira GFD, Viana NI, Guimaraes V, Leite KRM, Nahas WC, Srougi M, Antunes AA, Reis ST. The role of single nucleotide polymorphisms of miRNAs 100 and 146a as prognostic factors for prostate cancer. Int J Biol Markers 2021; 36:50-56. [PMID: 34030497 DOI: 10.1177/1724600821997461] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Prostate cancer has a high incidence in men and is the second cause of cancer death among americans male. microRNA (miR) is becoming a potential new prognostic factor for prostate cancer. Single nucleotide polymorphisms (SNPs) are common polymorphisms, characterized by a single exchange of nitrogen based in the DNA. This polymorphism is present in the miRs, altering their function. OBJECTIVE To evaluate the role of SNP rs1834306 of miR100 and rs2910164 of miR146a in the development and prognosis of prostate cancer. METHODS One hundred patients diagnosed with prostate cancer and 68 controls were selected. The identification of SNP was rated by quantitative polymerase chain reaction from blood samples, and the analysis was performed within the presence of SNP and the prognostic variables. RESULTS In the SNP rs1834306 (miR100), a smaller presence of the polymorphic homozygous genotype was identified in patients with PSA >10 ng/mL, (P=0.03); when evaluating only the presence of the polymorphic allele G (P=0.09) it was compared to the presence of the wild type allele A. Among the patients with prostate cancer, SNP rs2910164 (miR146A), the polymorphic allele was more frequent in patients with a Gleason score ⩾7 than in patients with a Gleason score <7, (P=0.043). In patients with prostate cancer, miR100 was overexpressed in those with pT3 staging compared to pT2 and among those who had biochemical recurrence (P = 0.004 and P = 0.011, respectively). CONCLUSIONS SNP of miR146a acts as a poor prognostic factor (Gleason ⩾7), and the SNP of miR100 is linked to better prognostic data (PSA <10). MiR100 was overexpressed in prostate cancer with worse prognostic factors.
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Affiliation(s)
| | - Renan Eboli Lopes
- FMUSP, Sao Paulo, Brazil.,Hospital dos Servidores do Estado de Pernambuco, Pernambuco, Brazil
| | | | | | | | | | - William C Nahas
- University of Sao Paulo Medical School and Institute of Cancer State of Sao Paulo (ICESP), Sao Paulo, Brazil
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Leite KRM, Barrios CH, Buzaid AC, Gagliato D, Gobbi H, Soares F. Applicability of PD-L1 tests to tailor triple-negative breast cancer treatment in Brazil. Surg Exp Pathol 2021. [DOI: 10.1186/s42047-021-00092-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Abstract
Background
Triple-negative breast cancer (TNBC) is a heterogeneous disease that represents 10–20% of breast cancer cases. The prognosis for advanced TNBC is usually poor, with a median overall survival of approximately 18 months or less.
Main text
New targeted therapies such as anti-PD-L1 agents are emerging as an option to treat advanced TNBC. A panel of 6 national experts with an active interest in breast cancer convened online. Panel members had either clinical or pathology experience in breast cancer. The experts pre-defined critical questions in the management of PD-L1 in TNBC, and a literature review was performed for selected topics before the online meeting.
Conclusion
The experts led active discussions involving a multidisciplinary team comprising pathologists and clinical oncologists. The meeting served to discuss the most relevant issues. A total of 10 critical questions for PD-L1+ TNBC were debated and are presented in this review. This article discusses the current landscape for PD-L1 tests in TNBC in Brazil.
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Ferreira JM, Dellê H, Camacho CP, Almeida RJ, Reis ST, Matos YST, Lima AMR, Leite KRM, Pontes-Júnior J, Srougi M. Indoleamine 2,3-dioxygenase expression in the prognosis of the localized prostate cancer. Int Urol Nephrol 2020; 52:1477-1482. [PMID: 32152758 DOI: 10.1007/s11255-020-02414-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 02/15/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Indoleamine 2,3-dioxygenase (IDO1) is an enzyme that acts as an immunomodulatory molecule. It is found in several types of cancer where it seems to be associated with tumor escape due to its immunosuppressive mechanisms. However, the role of IDO1 expression in prostate cancer (PC) is unclear. The aim of our study was to evaluate the expression of IDO1 in localized PC and to correlate with the classic prognostic factor and recurrence after surgical treatment. METHODS We retrospectively evaluated surgical specimens from 111 patients with localized PC, who underwent radical prostatectomy. Recurrence was defined as a prostate specific antigen (PSA) level exceeding 0.2 ng/mL postoperatively, and the follow-up was 123 months. IDO1 expression was evaluated by immunohistochemistry in 72 cases of which 42 (58%) had biochemical recurrence. RESULTS Lower IDO1 expression was associated with higher Gleason score (p = 0.022) and PSA levels (p = 0.042). The multivariate analyses revealed that the loss of IDO1 and higher PSA were independently associated with biochemical recurrence. The chance of recurrence was increased by 85% in patients with lower IDO1 [OR = 0.15; p = 0.009 CI 95% (0.038-0.633)] and increased by 5.5 times in patients with higher PSA [OR = 5.51; p = 0.012 CI 95% (1.435-21.21)]. The recurrence-free survival curve also demonstrates that lower IDO1 was associated with lower time to biochemical recurrence (p = 0.0004). CONCLUSION The loss of IDO1 expression was associated with increased chance of biochemical recurrence, higher PSA, and a Gleason score in localized PC.
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Affiliation(s)
- Janaina Mendes Ferreira
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil.
| | - Humberto Dellê
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil
| | - Cleber Pinto Camacho
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil
| | - Robson José Almeida
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil
| | - Sabrina Thalita Reis
- Laboratory of Medical Investigation (LIM55), Urology Department, University of São Paulo Medical School, Sao Paulo, Brazil
| | - Yves Silva Teles Matos
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil
| | - Amanda M Ramos Lima
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil
| | - Kátia Ramos Moreira Leite
- Laboratory of Medical Investigation (LIM55), Urology Department, University of São Paulo Medical School, Sao Paulo, Brazil
| | - José Pontes-Júnior
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, 2º subsolo, São Paulo City, SP, Brazil.,Laboratory of Medical Investigation (LIM55), Urology Department, University of São Paulo Medical School, Sao Paulo, Brazil
| | - Miguel Srougi
- Laboratory of Medical Investigation (LIM55), Urology Department, University of São Paulo Medical School, Sao Paulo, Brazil
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Ferreira JM, Pontes‐Júnior J, Matheus LHG, Sousa DM, Lima AER, Almeida RJ, Camacho CP, Reis ST, Leite KRM, Srougi M, Dellê H. Indoleamine 2,3‐dioxygenase expression is correlated to prognosis in localized prostate cancer. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.677.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - José Pontes‐Júnior
- Postgraduate Program in MedicineUniversidade Nove de Julho ‐ UNINOVESão PauloBrazil
| | | | - Diego Mota Sousa
- Postgraduate Program in MedicineUniversidade Nove de Julho ‐ UNINOVESão PauloBrazil
| | | | - Robson José Almeida
- Postgraduate Program in MedicineUniversidade Nove de Julho ‐ UNINOVESão PauloBrazil
| | - Cleber Pinto Camacho
- Postgraduate Program in MedicineUniversidade Nove de Julho ‐ UNINOVESão PauloBrazil
| | - Sabrina Thalita Reis
- Laboratory of Medical Investigation (LIM55) ‐ Urology DepartmentFaculdade de Medicina da Universidade de São Paulo ‐ FMUSPSão PauloBrazil
| | - Kátia Ramos Moreira Leite
- Laboratory of Medical Investigation (LIM55) ‐ Urology DepartmentFaculdade de Medicina da Universidade de São Paulo ‐ FMUSPSão PauloBrazil
| | - Miguel Srougi
- Laboratory of Medical Investigation (LIM55) ‐ Urology DepartmentFaculdade de Medicina da Universidade de São Paulo ‐ FMUSPSão PauloBrazil
| | - Humberto Dellê
- Postgraduate Program in MedicineUniversidade Nove de Julho ‐ UNINOVESão PauloBrazil
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Sarcinelli MA, Albernaz MDS, Szwed M, Iscaife A, Leite KRM, Junqueira MDS, Bernardes ES, da Silva EO, Tavares MIB, Santos-Oliveira R. Nanoradiopharmaceuticals for breast cancer imaging: development, characterization, and imaging in inducted animals. Onco Targets Ther 2016; 9:5847-5854. [PMID: 27713638 PMCID: PMC5045224 DOI: 10.2147/ott.s110787] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Monoclonal antibodies as polymeric nanoparticles are quite interesting and endow this new drug category with many advantages, especially by reducing the number of adverse reactions and, in the case of radiopharmaceuticals, also reducing the amount of radiation (dose) administered to the patient. In this study, a nanoradiopharmaceutical was developed using polylactic acid (PLA)/polyvinyl alcohol (PVA)/montmorillonite (MMT)/trastuzumab nanoparticles labeled with technetium-99m (99mTc) for breast cancer imaging. In order to confirm the nanoparticle formation, atomic force microscopy and dynamic light scattering were performed. Cytotoxicity of the nanoparticle and biodistribution with 99mTc in healthy and inducted animals were also measured. The results from atomic force microscopy showed that the nanoparticles were spherical, with a size range of ~200-500 nm. The dynamic light scattering analysis demonstrated that over 90% of the nanoparticles produced had a size of 287 nm with a zeta potential of -14,6 mV. The cytotoxicity results demonstrated that the nanoparticles were capable of reaching breast cancer cells. The biodistribution data demonstrated that the PLA/PVA/MMT/trastuzumab nanoparticles labeled with 99mTc have great renal clearance and also a high uptake by the lesion, as ~45% of the PLA/PVA/MMT/trastuzumab nanoparticles injected were taken up by the lesion. The data support PLA/PVA/MMT/trastuzumab labeled with 99mTc nanoparticles as nanoradiopharmaceuticals for breast cancer imaging.
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Affiliation(s)
- Michelle Alvares Sarcinelli
- Instituto de Macromoléculas Professora Eloisa Mano Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Laboratory of Medical Investigation, Faculty of Medicine, São Paulo University, São Paulo, Brazil
| | | | - Marzena Szwed
- Department of Thermobiology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Alexandre Iscaife
- Laboratory of Medical Investigation, Faculty of Medicine, São Paulo University, São Paulo, Brazil
| | | | - Mara de Souza Junqueira
- Laboratory of Experimental Oncology, Faculty of Medicine, São Paulo University, São Paulo, Brazil
| | | | - Emerson Oliveira da Silva
- Instituto de Macromoléculas Professora Eloisa Mano Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Ines Bruno Tavares
- Instituto de Macromoléculas Professora Eloisa Mano Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ralph Santos-Oliveira
- Laboratory of Nanoradiopharmaceuticals, Zona Oeste State University, Rio de Janeiro, Brazil
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Rossi AFT, Cadamuro ACT, Biselli-Périco JM, Leite KRM, Severino FE, Reis PP, Cordeiro JA, Silva AE. Interaction between inflammatory mediators and miRNAs in Helicobacter pylori infection. Cell Microbiol 2016; 18:1444-58. [PMID: 26945693 PMCID: PMC5074252 DOI: 10.1111/cmi.12587] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 10/21/2015] [Revised: 02/12/2016] [Accepted: 02/29/2016] [Indexed: 12/13/2022]
Abstract
Helicobacter pylori cause chronic inflammation favouring gastric carcinogenesis, and its eradication may prevent malignant transformation. We evaluated whether H. pylori infection and its eradication modify the expression of inflammatory mediators in patients with chronic gastritis. Furthermore, we assessed whether microRNAs modulate inflammatory pathways induced by H. pylori and identified miRNA–gene interaction networks. mRNA and protein expression of TNFA, IL6, IL1B, IL12A, IL2 and TGFBRII and miRNAs miR‐103a‐3p, miR‐181c‐5p, miR‐370‐3p, miR‐375 and miR‐223‐3p were evaluated in tissue samples from 20 patients with chronic gastritis H. pylori negative (Hp−) and 31 H. pylori positive (Hp+), before and three months after bacterium eradication therapy, in comparison with a pool of Hp− normal gastric mucosa. Our results showed that H. pylori infection leads to up‐regulation of TNFA, IL6, IL12A and IL2 and down‐regulation of miRNAs. Bacterium eradication reduces the expression of TNFA and IL6 and up‐regulates TGFBRII and all investigated miRNAs, except miR‐223‐3p. Moreover, transcriptional profiles of inflammatory mediators and miRNAs after eradication are different from the non‐infected group. Deregulated miRNA–mRNA interaction networks were observed in the Hp+ group before and after eradication. Therefore, miRNAs modulated cytokine expression in the presence of H. pylori and after its eradication, suggesting that miRNAs participate in the pathological process triggered by H. pylori in the gastric mucosa.
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Affiliation(s)
- Ana Flávia Teixeira Rossi
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Aline Cristina Targa Cadamuro
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Joice Matos Biselli-Périco
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Kátia Ramos Moreira Leite
- USP, São Paulo University, Faculty of Medicine, Department of Surgery, Avenida Dr. Arnaldo, 455, São Paulo, SP, Brazil
| | - Fábio Eduardo Severino
- UNESP, São Paulo State University, Faculty of Medicine, Department of Surgery and Orthopedics, Avenida Prof. Montenegro, Botucatu, SP, Brazil
| | - Patricia P Reis
- UNESP, São Paulo State University, Faculty of Medicine, Department of Surgery and Orthopedics, Avenida Prof. Montenegro, Botucatu, SP, Brazil
| | - José Antonio Cordeiro
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Ana Elizabete Silva
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil.
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Costa ET, Barnabé GF, Li M, Dias AAM, Machado TR, Asprino PF, Cavalher FP, Ferreira EN, Del Mar Inda M, Nagai MH, Malnic B, Duarte ML, Leite KRM, de Barros ACSD, Carraro DM, Chammas R, Armelin HA, Cavenee W, Furnari F, Camargo AA. Intratumoral heterogeneity of ADAM23 promotes tumor growth and metastasis through LGI4 and nitric oxide signals. Oncogene 2014; 34:1270-9. [PMID: 24662834 DOI: 10.1038/onc.2014.70] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 01/06/2014] [Accepted: 01/14/2014] [Indexed: 12/22/2022]
Abstract
Intratumoral heterogeneity (ITH) represents an obstacle for cancer diagnosis and treatment, but little is known about its functional role in cancer progression. The A Desintegrin And Metalloproteinase 23 (ADAM23) gene is epigenetically silenced in different types of tumors, and silencing is often associated with advanced disease and metastasis. Here, we show that invasive breast tumors exhibit significant ADAM23-ITH and that this heterogeneity is critical for tumor growth and metastasis. We demonstrate that while loss of ADAM23 expression enhances invasion, it causes a severe proliferative deficiency and is not itself sufficient to trigger metastasis. Rather, we observed that, in ADAM23-heterotypic environments, ADAM23-negative cells promote tumor growth and metastasis by enhancing the proliferation and invasion of adjacent A23-positive cells through the production of LGI4 (Leucine-rich Glioma Inactivated 4) and nitric oxide (NO). Ablation of LGI4 and NO in A23-negative cells significantly attenuates A23-positive cell proliferation and invasion. Our work denotes a driving role of ADAM23-ITH during disease progression, shifting the malignant phenotype from the cellular to the tissue level. Our findings also provide insights for therapeutic intervention, enforcing the need to ascertain ITH to improve cancer diagnosis and therapy.
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Affiliation(s)
- E T Costa
- 1] Centro de Oncologia Molecular, Hospital Sírio Libanês, São Paulo, Brazil [2] Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - G F Barnabé
- 1] Centro de Oncologia Molecular, Hospital Sírio Libanês, São Paulo, Brazil [2] Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - M Li
- Ludwig Institute for Cancer Research (LICR), University of California, San Diego, CA, USA
| | - A A M Dias
- Departamento de Biologia Geral (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - T R Machado
- Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - P F Asprino
- 1] Centro de Oncologia Molecular, Hospital Sírio Libanês, São Paulo, Brazil [2] Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - F P Cavalher
- Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - E N Ferreira
- Centro Internacional de Pesquisa, Hospital AC Camargo, São Paulo, Brazil
| | - M Del Mar Inda
- Ludwig Institute for Cancer Research (LICR), University of California, San Diego, CA, USA
| | - M H Nagai
- Departamento de Bioquímica (IQ), Universidade de São Paulo, São Paulo, Brazil
| | - B Malnic
- Departamento de Bioquímica (IQ), Universidade de São Paulo, São Paulo, Brazil
| | - M L Duarte
- 1] Centro de Oncologia Molecular, Hospital Sírio Libanês, São Paulo, Brazil [2] Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
| | - K R M Leite
- Departamento de Urologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - A C S D de Barros
- Departamento de Mastologia, Hospital Sírio Libanês, São Paulo, Brazil
| | - D M Carraro
- Centro Internacional de Pesquisa, Hospital AC Camargo, São Paulo, Brazil
| | - R Chammas
- Departamento de Urologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - H A Armelin
- 1] Departamento de Bioquímica (IQ), Universidade de São Paulo, São Paulo, Brazil [2] Instituto Butantan, São Paulo, Brazil
| | - W Cavenee
- Ludwig Institute for Cancer Research (LICR), University of California, San Diego, CA, USA
| | - F Furnari
- Ludwig Institute for Cancer Research (LICR), University of California, San Diego, CA, USA
| | - A A Camargo
- 1] Centro de Oncologia Molecular, Hospital Sírio Libanês, São Paulo, Brazil [2] Ludwig Institute for Cancer Research (LICR), São Paulo, Brazil
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Nunes RLV, Bruschini H, Utsunomia K, Silveira MA, Teodoro WR, Leite KRM, Srougi M. Influence of a hypercholesterolemic diet on the collagen composition of the bladder wall extracellular matrix in rats. Histol Histopathol 2012; 27:745-52. [PMID: 22473695 DOI: 10.14670/hh-27.745] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE To investigate the effects of hypercholesterolemic diet on the collagen composition of urinary bladder wall. MATERIALS AND METHODS Forty-five female 4-week-old Wistar rats were divided into three groups: 1) control group fed a normal diet (ND); 2) model of bladder outlet obstruction (BOO) group fed a ND; and 3) group fed a HCD (1.25% cholesterol). Total serum cholesterol, LDL cholesterol and body weight were assessed at baseline. Four weeks later, group 2 underwent a surgical procedure resulting in a partial BOO, while groups 1 and 3 underwent a sham similar surgical procedure. Six weeks later, all animals had their bladders removed; serum cholesterol and LDL cholesterol levels and body weights were measured. Morphological and morphometric analysis was performed by Picrosirius staining and collagen types I and III were identified by immunofluorescence. Statistical analysis was completed and significance was considered when p<0.05. RESULTS Rats fed an HCD exhibited a significant increase in LDL cholesterol levels (p<0.001) and body weight (p=0.017), when compared to the groups fed a ND during the ten-week study period. Moreover, the HCD induced morphological alterations of the bladder wall collagen, regarding thin collagen fibers and the amounts of type III collagen when compared to the control group (p=0.002 and p=0.016, respectively), resembling the process promoted in the BOO model. CONCLUSIONS A hyper-cholesterolemic diet in Wistar rats promoted morphological changes of the bladder types of collagen, as well as increases in body weight and LDL cholesterol.
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Affiliation(s)
- R L V Nunes
- Division of Urology, University of São Paulo School of Medicine, São Paulo, Brazil.
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Reis STD, Pontes-Júnior J, Antunes AA, Sousa-Canavez JMD, Abe DK, Cruz JASD, Dall'oglio MF, Crippa A, Passerotti CC, Ribeiro-Filho LA, Viana NI, Srougi M, Leite KRM. Tgf-β1 expression as a biomarker of poor prognosis in prostate cancer. Clinics (Sao Paulo) 2011; 66:1143-7. [PMID: 21876965 PMCID: PMC3148455 DOI: 10.1590/s1807-59322011000700004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 03/13/2011] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To evaluate the correlation between transforming growth factor beta (TGF-β1) expression and prognosis in prostate cancer. PATIENTS AND METHODS TGF-β1 expression levels were analyzed using the quantitative real-time polymerase chain reaction to amplify RNA that had been isolated from fresh-frozen malignant and benign tissue specimens collected from 89 patients who had clinically localized prostate cancer and had been treated with radical prostatectomy. The control group consisted of li patients with benign prostate hyperplasia. The expression levels of TGF-β1 were compared between the groups in terms of Gleason scores, pathological staging, and prostate-specific antigen serum levels. RESULTS In the majority of the tumor samples, TGF-β1 was underexpressed 67.0% of PCa patients. The same expression pattern was identified in benign tissues of patients with prostate cancer. Although most cases exhibited underexpression of TGF-β1, a higher expression level was found in patients with Gleason scores ≥ 7 when compared to patients with Gleason scores < 7(p = 0.002). Among the 26 cases of TGF-β1 overexpression, 92.3% had poor prognostic features. CONCLUSIONS TGF-β1 was underexpressed in prostate cancers; however, higher expression was observed in tumors with higher Gleason scores, which suggests that TGF-β1 expression may be a useful prognostic marker for prostate cancer. Further studies of clinical specimens are needed to clarify the role of TGF-β1 in prostate carcinogenesis.
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Affiliation(s)
- Sabrina Thalita Dos Reis
- Laboratory of Medical Investigation (LIM55), Urology Department, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
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Reis STD, Pontes-Júnior J, Antunes AA, Sousa-Canavez JMD, Abe DK, Cruz JASD, Dall'oglio MF, Crippa A, Passerotti CC, Ribeiro-Filho LA, Viana NI, Srougi M, Leite KRM. Tgf-β1 expression as a biomarker of poor prognosis in prostate cancer. Clinics (Sao Paulo) 2011. [PMID: 21876965 DOI: 10.1590/s1807-59322011000700004.pmid:21876965;pmcid:pmc3148455] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
OBJECTIVE To evaluate the correlation between transforming growth factor beta (TGF-β1) expression and prognosis in prostate cancer. PATIENTS AND METHODS TGF-β1 expression levels were analyzed using the quantitative real-time polymerase chain reaction to amplify RNA that had been isolated from fresh-frozen malignant and benign tissue specimens collected from 89 patients who had clinically localized prostate cancer and had been treated with radical prostatectomy. The control group consisted of li patients with benign prostate hyperplasia. The expression levels of TGF-β1 were compared between the groups in terms of Gleason scores, pathological staging, and prostate-specific antigen serum levels. RESULTS In the majority of the tumor samples, TGF-β1 was underexpressed 67.0% of PCa patients. The same expression pattern was identified in benign tissues of patients with prostate cancer. Although most cases exhibited underexpression of TGF-β1, a higher expression level was found in patients with Gleason scores ≥ 7 when compared to patients with Gleason scores < 7(p = 0.002). Among the 26 cases of TGF-β1 overexpression, 92.3% had poor prognostic features. CONCLUSIONS TGF-β1 was underexpressed in prostate cancers; however, higher expression was observed in tumors with higher Gleason scores, which suggests that TGF-β1 expression may be a useful prognostic marker for prostate cancer. Further studies of clinical specimens are needed to clarify the role of TGF-β1 in prostate carcinogenesis.
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Affiliation(s)
- Sabrina Thalita Dos Reis
- Laboratory of Medical Investigation (LIM55), Urology Department, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
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Duarte MC, Babeto E, Leite KRM, Miyazaki K, Borim AA, Rahal P, Silva AE. Expression of TERT in precancerous gastric lesions compared to gastric cancer. Braz J Med Biol Res 2010; 44:100-4. [PMID: 21180888 DOI: 10.1590/s0100-879x2010007500143] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 11/18/2010] [Indexed: 12/14/2022] Open
Abstract
The objective of this study was to determine the levels of TERT mRNA and TERT protein expression in stomach precancerous lesions such as intestinal metaplasia (IM) and gastric ulcer (GU) and compare them to gastric cancer (GC). Real-time PCR was performed to detect TERT mRNA expression levels in 35 biopsies of IM, 30 of GU, and 22 of GC and their respective normal mucosas. TERT protein was detected by immunohistochemistry in 68 samples, 34 of IM, 23 of GU, and 11 of GC. Increased TERT mRNA expression levels were observed in a significant number of cases, i.e., 46% of IM, 50% of GU, and 79% of GC. The relative mean level of TERT mRNA after normalization with the β-actin reference gene and comparison with the respective adjacent normal mucosa was slightly increased in the IM and GU groups, 2.008 ± 2.605 and 2.730 ± 4.120, respectively, but high TERT mRNA expression was observed in the GC group (17.271 ± 33.852). However, there were no statistically significant differences between the three groups. TERT protein-positive immunostaining was observed in 38% of IM, 39% of GU, and 55% of GC. No association of TERT mRNA and protein expression with Helicobacter pylori infection or other clinicopathological variables was demonstrable, except for the incomplete type vs the complete type of IM. This study confirms previous data of the high expression of both TERT mRNA and protein in gastric cancer and also demonstrates this type of changed expression in IM and GU, thus suggesting that TERT expression may be deregulated in precursor lesions that participate in the early stages of gastric carcinogenesis.
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Affiliation(s)
- M C Duarte
- Departamento de Biologia, Universidade Estadual Paulista, São José do Rio Preto, SP, Brazil
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Pontes-Júnior J, Reis ST, de Oliveira LCN, Sant'anna AC, Dall'oglio MF, Antunes AA, Ribeiro-Filho LA, Carvalho PA, Cury J, Srougi M, Leite KRM. Association between integrin expression and prognosis in localized prostate cancer. Prostate 2010; 70:1189-95. [PMID: 20564421 DOI: 10.1002/pros.21153] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Integrins and other adhesion molecules are essential for maintaining the epithelial phenotype. Some studies have reported correlations between abnormalities in their expression and carcinogenesis, but their role in prostate cancer is unclear. Our aim was to study the expression profile of integrins in surgical specimens of prostate cancer and associate their expression patterns with patient outcomes. METHODS We selected 111 patients with localized prostate cancer who had undergone radical prostatectomy. Of these patients, 60 had no tumor recurrence after a median follow-up of 123 months. Integrin expression was evaluated by immunohistochemistry in a tissue microarray containing two tumor samples per patient. A semiquantitative analysis was employed. We measured the association between the expression of eight integrins and tumor recurrence. RESULTS Multivariate analysis showed that expression of alpha3 and alpha3beta1 was related to worse outcome. When alpha3 expression was strong and alpha3beta1 expression was positive, the odds of recurrence were 3.0- and 2.5-fold higher, respectively. Only 19% and 28% of patients were recurrence-free in a mean period of 123 months of follow up when their tumors showed strong alpha3 or positive alpha3beta1 immuno-expression, respectively. CONCLUSIONS We have shown that the expression of integrin alpha3beta1 was independently associated with tumor recurrence after radical prostatectomy, suggesting that this integrin is a potential prognostic marker.
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Affiliation(s)
- José Pontes-Júnior
- Laboratory of Medical Investigation (LIM55), Urology Department, University of Sao Paulo Medical School, Sao Paulo, Brazil.
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da Silveira Mitteldorf CAT, de Sousa-Canavez JM, Leite KRM, Massumoto C, Camara-Lopes LH. FN1, GALE, MET, and QPCT overexpression in papillary thyroid carcinoma: molecular analysis using frozen tissue and routine fine-needle aspiration biopsy samples. Diagn Cytopathol 2010; 39:556-61. [PMID: 20607686 DOI: 10.1002/dc.21423] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2010] [Accepted: 04/05/2010] [Indexed: 11/09/2022]
Abstract
Thyroid nodules are a common clinical problem, and fine-needle aspiration biopsy (FNAB) is widely used for its evaluation. Only 5% are malignant, being papillary carcinoma (PC) the most frequent neoplasia. Approximately 20% are classified as indeterminate or suspicious for malignancy. Gene-expression pattern may be useful for diagnosing PC in difficult or ambiguous cases. In our prior study, we were able to apply RT-PCR method in a series of routinely performed FNAB of thyroid nodules using individual, residual samples. In this study, a total of 70 thyroid samples were evaluated for the expression of MPPED2, H/HBA2, MET, FN1, GALE, and QPCT genes, including 24 cases of frozen thyroid tissue, 12 nodular hyperplasia and 12 PC, and the 46 consecutive thyroid FNAB samples, previously analyzed (3 positive, 10 indeterminate and 32 negative for malignancy, and 1 insufficient). FN1, GALE, MET, and QPCT mRNA expression were significantly different in benign and malignant samples, with similar pattern of overexpression in aspirates compared to frozen tissue. H/HBA2 and MPPED2 expression varied. Histological correlation was possible in five indeterminate cases, revealing one PC and four benign lesions. In conclusion, FN1, GALE, MET, and QPCT were significantly overexpressed in thyroid PC. RT-PCR method could be applied to routine FNAB, showing a similar pattern of overexpression. Despite the small number of cases evaluated, our results suggest that molecular analysis may be of assistance in patients with indeterminate/suspicious cytology, adding elements for preoperative diagnosis and better management of these patients.
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Abdalla CMZ, de Oliveira ZNP, Sotto MN, Leite KRM, Canavez FC, de Carvalho CM. Polymerase chain reaction compared to other laboratory findings and to clinical evaluation in the diagnosis of cutaneous tuberculosis and atypical mycobacteria skin infection. Int J Dermatol 2009; 48:27-35. [DOI: 10.1111/j.1365-4632.2009.03807.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bellini MF, Leite KRM, Cury PM, Silva AE. p53, p16 and Fhit proteins expressions in chronic esophagitis and Chagas disease. Anticancer Res 2008; 28:3793-3799. [PMID: 19189666] [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: 05/27/2023]
Abstract
BACKGROUND Models have suggested esophageal carcinogenesis can result from the alteration of sequences, leading to esophagitis, atrophy, dysplasia, carcinoma in situ and invasive carcinoma. While numerous genetic alterations have been reported in esophageal carcinogenesis, studies of benign lesions with precancerous potential are scarce. MATERIALS AND METHODS Immunohistochemistry was performed for p53, p16 and Fhit proteins in the esophageal mucosa from patients with Chagas disease (CD), chagasic megaesophagus (CM), chronic esophagitis (CE), esophageal squamous cell carcinoma (ESCC) and in normal mucosa (NM). RESULTS The proportion of p53-positive cases increased progressively according to the severity of the pathology CD (7.7%), CM (26.1%), CE (522%) and ESCC (100%). However, p16 and Fhit did not show any statistically significant differences among the groups. CONCLUSION p53 overexpression is involved in the initial steps of esophageal carcinogenesis, supporting further evaluation of its utility as a marker in precursor lesions, conversely, losses of Fhit and p16 expression may not be significant.
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Dos Reis ST, Villanova FE, De Andrade PM, Pontes J, Silva IA, Canavez FC, Sañudo A, Srougi M, Leite KRM. Polymorphisms of the matrix metalloproteinases associated with prostate cancer. Mol Med Rep 2008; 1:517-520. [PMID: 21479442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Prostate cancer (PCa) is the most common type of malignant tumor in Brazilian males. Single nucleotide polymorphisms (SNPs) have been demonstrated to be present in the promoter region of matrix metalloproteinase (MMP) genes and have been associated with the development and progression of some cancers. In this study, our aim was to investigate the association between the polymorphisms of MMP1, 2, 7, and 9 and susceptibility, and their correlation with the classic prognostic parameters of PCa. For genes MMP1, 2 and 9, the frequencies of the polymorphic homozygote genotypes were higher in the control group than in the PCa group (P<0.0001). We conclude that the MMP1, 2 and 9 polymorphisms are more common in the control group than in patients with PCa, and may have a protective effect in the development of this neoplasia.
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Affiliation(s)
- Sabrina Thalita Dos Reis
- Laboratory of Medical Investigation (LIM55), Urology Department, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil.
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Bizari L, Borim AA, Leite KRM, Gonçalves FDT, Cury PM, Tajara EH, Silva AE. Alterations of the CCND1 and HER-2/neu (ERBB2) proteins in esophageal and gastric cancers. ACTA ACUST UNITED AC 2006; 165:41-50. [PMID: 16490596 DOI: 10.1016/j.cancergencyto.2005.08.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [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: 05/12/2005] [Revised: 07/29/2005] [Accepted: 08/30/2005] [Indexed: 01/02/2023]
Abstract
We evaluated the relationship of amplification and polysomy of both the CCND1 and the ERBB2 (alias HER-2/NEU) genes to the overexpression of their proteins in esophageal and gastric cancers and also their association with clinicopathological features. CCND1 gene amplification (45%) was more prevalent than polysomy (25%) in esophageal carcinoma, but the pattern observed was similar in gastric adenocarcinoma (10% amplification, 15% polysomy). For ERBB2, polysomy was a more frequent mechanism than amplification in both esophageal (32.5 vs. 7.5%) and gastric (15 vs. 5%) cancers. Overexpression of cyclin D1 protein was identified in 37.5% of the specimens of esophageal tumors and 35% of gastric tumors, and overexpression of Her-2/neu protein in 12.5 and 7.5%, respectively. The kappa-statistics revealed a fair agreement in both types of tumors only in overexpression and amplification of the CCND1 gene; the ERBB2 gene showed a fair agreement in amplification and polysomy and the level of protein expression in gastric adenocarcinoma. Thus, polysomy 17 could contribute to a high Her-2/neu protein level, at least in gastric cancer. Our data indicated an association with alcohol consumption and the CCND1 gene or protein levels, in both esophageal and gastric cancers.
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Affiliation(s)
- Lucimari Bizari
- Department of Biology, São Paulo State University-UNESP, Rua Cristóvão Colombo, 2265, 15054-000, São José do Rio Preto, SP, Brazil
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Antunes AA, Dall'Oglio MF, Barbuto JAM, Leite KRM, Srougi M. Pure sarcomatous recurrence of clear cell renal carcinoma following radical nephrectomy and dendritic cell vaccination. SAO PAULO MED J 2006; 124:161-2. [PMID: 17119695 DOI: 10.1590/s1516-31802006000300011] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2004] [Accepted: 05/02/2006] [Indexed: 11/22/2022] Open
Abstract
CONTEXT Sarcomatous differentiation, which represents transformation to high-grade malignancy, can occur in all histological types of renal malignancy. CASE REPORT The authors report on the case of a 66-year-old woman with a right renal mass that was shown to be a clear cell carcinoma. She underwent radical nephrectomy and dendritic cell vaccination and, 3.5 years later, she developed retroperitoneal pure sarcomatous recurrence of the tumor. The authors speculate that the vaccination could have played some role in this differentiation or selection of the sarcomatous component of the primary tumor.
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Affiliation(s)
- Alberto Azoubel Antunes
- Division of Urology, Faculdade de Medicina da Universidade de São Paulo, and Hospital Sírio-Libanês, São Paulo, Brazil
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Moritz R, Srougi M, Ortiz V, Leite KRM, Nesrallah L, Dall'Oglio M, Sant'Anna AC. Desdiferenciação do câncer da próstata após terapia antiandrogênica. Rev Assoc Med Bras (1992) 2005; 51:117-20. [PMID: 15947826 DOI: 10.1590/s0104-42302005000200020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/22/2022] Open
Abstract
BACKGROUND Neoadjuvant androgen deprivation in prostate cancer induces tumor volume regression but does not improve outcome of the patient. A possible explanation for this phenomenon could be an increase of the residual tumor aggressiveness brought about by antiandrogen therapy. The purpose of the present study was to evaluate the frequency of tumor dedifferentiation following androgen blockade in prostate cancer and to determine if the remaining tumor shows signs of increased aggressiveness. METHODS Thirty patients bearing locally advanced prostate cancer (stages T2c - T3) were submitted to neoadjuvant anti-androgenic therapy during four months followed by radical prostatectomy. Gleason scores from biopsy and surgical specimens were compared. Furthermore, the cell proliferation index was evaluated by immunohistochemistry assay for PCNA, tests with strong nuclear staining were considered positive. The percentage of positive nuclei, counted in 500 cells, was determined in several categories of the Gleason score from surgical specimens. RESULTS In 11(37%) surgical specimens the Gleason score was equal or lower than that found in the biopsy and in 19 (63%) the total score was higher in the surgical specimens (p<0.05). The median of PCNA expression was 4.5%, 10%, 12% and 14% in Gleason scores 2-4, 5-6,7 and 8-10, respectively (p>0.05). The median of cell proliferation indexes was 9% for glandular or specimen confined tumors and was 17% for extraprostatic tumors (p<0.05). CONCLUSION The lower Gleason score was found in almost 2/3 of patients submitted to antiandrogen therapy. However, the cell proliferation index measured by PCNA was the same for tumors with lower or higher Gleason scores. It seems that cell dedifferentiation seen after neoadjuvant androgen deprivation represents a mere morphologic phenomenon and not a real increase in tumor aggressiveness.
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Gonçalves PD, Srougi M, Dall'lio MF, Leite KRM, Ortiz V, Hering F. Low clinical stage renal cell carcinoma: relevance of microvascular tumor invasion as a prognostic parameter. J Urol 2004; 172:470-4. [PMID: 15247705 DOI: 10.1097/01.ju.0000130582.31467.30] [Citation(s) in RCA: 42] [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] [Indexed: 11/26/2022]
Abstract
PURPOSE Renal cell carcinoma is a tumor with unpredictable behavior and defining reliable prognostic factors would be extremely valuable in the clinical setting. Tumor stage, nuclear grade and tumor cell type are the main prognostic clinical parameters available. In this study we evaluated the role of microvascular involvement in the primary lesion for predicting tumor behavior in patients with low stage clinical disease. MATERIALS AND METHODS A total of 95 patients with clinically localized renal cell carcinoma (stages T1-T2 Nx M0) underwent radical nephrectomy and/or nephron sparing surgery, and were followed for a median of 45 months. The impact of microvascular tumor invasion on disease progression and its correlation with known pathological outcomes (tumor size, nuclear grade and cell type) were studied. RESULTS Microvascular tumor invasion was observed in 24 patients (25%), of whom 50% had disease recurrence. Of the 71 patients without microvascular invasion only 4 (6%) showed tumor recurrence. When microvascular invasion was correlated with other histological parameters, a significant statistical association was noted with tumor diameter, perirenal fat invasion, macroscopic extension to the renal vein, nuclear grade, lymph node metastasis and sarcomatous elements in the tumor. Multivariate analysis showed that microvascular invasion and the involvement of regional lymph nodes were independent predictors of disease recurrence. Concerning cancer specific survival, microvascular invasion and perirenal fat infiltration were the only factors related to death. CONCLUSIONS Microvascular invasion is an independent and relevant clinical prognostic parameter for low clinical stage renal cell carcinoma.
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Affiliation(s)
- Pierre Damiao Gonçalves
- Division of Urology, Federal University of São Paulo and Division of Surgical Pathology, Hospital Sírio Libanês, Sa Paulo, Brazil
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Cury J, Srougi M, Leite KRM, Lopes LHC, Carneiro PC. Correlação entre a graduação histológica de biópsias e do espécimen cirúrgico em câncer da prostata. Rev Col Bras Cir 1999. [DOI: 10.1590/s0100-69911999000100006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Foram estudados, retrospectivamente, os prontuários de 120 pacientes com câncer localizado da próstata nos estádios clínicos T1, T2 e T3a e que foram submetidos a 1infadenectomia ilíaca e a cirurgia radical da próstata. Todos haviam sido graduados pela escala de Gleason através de biópsias da próstata guiadas pela ultra-sonografia transretal. Correlacionamos a graduação histo1ógica destas biópsias da próstata com a graduação final obtida no exame da peça cirúrgica correspondente e obtivemos exata concordância em 39 pacientes (32,50%). Ao considerarmos a concordância de ± 1unidade, observamos concordância de resultado em 81 pacientes (67,50%). A subgraduação histológica das biópsias prostáticas foi encontrada em 75 pacientes (62,50%) dos casos.
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