1
|
Ferrasi AC, Lima SVG, Galvani AF, Delafiori J, Dias-Audibert FL, Catharino RR, Silva GF, Praxedes RR, Santos DB, Almeida DTDM, Lima EO. Metabolomics in chronic hepatitis C: Decoding fibrosis grading and underlying pathways. World J Hepatol 2023; 15:1237-1249. [DOI: 10.4254/wjh.v15.i11.1237] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/22/2023] [Accepted: 10/23/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Chronic Hepatitis C (CHC) affects 71 million people globally and leads to liver issues such as fibrosis, cirrhosis, cancer, and death. A better understanding and prognosis of liver involvement are vital to reduce morbidity and mortality. The accurate identification of the fibrosis stage is crucial for making treatment decisions and predicting outcomes. Tests used to grade fibrosis include histological analysis and imaging but have limitations. Blood markers such as molecular biomarkers can offer valuable insights into fibrosis.
AIM To identify potential biomarkers that might stratify these lesions and add information about the molecular mechanisms involved in the disease.
METHODS Plasma samples were collected from 46 patients with hepatitis C and classified into fibrosis grades F1 (n = 13), F2 (n = 12), F3 (n = 6), and F4 (n = 15). To ensure that the identified biomarkers were exclusive to liver lesions (CHC fibrosis), healthy volunteer participants (n = 50) were also included. An untargeted metabolomic technique was used to analyze the plasma metabolites using mass spectrometry and database verification. Statistical analyses were performed to identify differential biomarkers among groups.
RESULTS Six differential metabolites were identified in each grade of fibrosis. This six-metabolite profile was able to establish a clustering tendency in patients with the same grade of fibrosis; thus, they showed greater efficiency in discriminating grades.
CONCLUSION This study suggests that some of the observed biomarkers, once validated, have the potential to be applied as prognostic biomarkers. Furthermore, it suggests that liquid biopsy analyses of plasma metabolites are a good source of molecular biomarkers capable of stratifying patients with CHC according to fibrosis grade.
Collapse
Affiliation(s)
| | | | - Aline Faria Galvani
- Department of Internal Medicine, Sao Paulo State University, Botucatu 18618-686, Brazil
| | - Jeany Delafiori
- Innovare Biomarkers Laboratory, University of Campinas, Campinas 13083-877, Brazil
| | | | | | - Giovanni Faria Silva
- Department of Internal Medicine, Sao Paulo State University, Botucatu 18618-686, Brazil
| | | | | | | | - Estela Oliveira Lima
- Department of Internal Medicine, Sao Paulo State University, Botucatu 18618-686, Brazil
| |
Collapse
|
2
|
Botta FP, Rocha LA, de Souza VDGP, Dos Reis PP, Lima EDO, Ferrasi AC, Fernandes AY, Zanini MA, Hamamoto Filho PT. Survival in patients undergoing surgical resection for brain metastasis from lung cancer and utility of different prognostic scales. Neurosurg Rev 2023; 46:184. [PMID: 37493965 DOI: 10.1007/s10143-023-02092-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 06/19/2023] [Accepted: 07/15/2023] [Indexed: 07/27/2023]
Abstract
Brain metastases (BM) from lung cancer are among the most common intracranial tumors. Several studies have published scales to estimate the survival of patients with BM. Routine access to molecular diagnostics and modern oncologic treatments, including targeted therapy and immunotherapy, is limited in low- and middle-income countries (LMICs); therefore, incorporating them into recent prognostic scales may diminish the reliability of the scales in LMICs. This retrospective study aimed to determine the survival of 55 patients who were surgically treated for BM from lung cancer at a Brazilian public tertiary teaching hospital between 2012 and 2022. We determined clinical factors associated with survival, and compared observed survival rates with the estimated survival on prognostic scales. The mean overall survival (OS) was 9.3 months (range:0.2-76.5). At univariate analysis, female sex and improved postoperative Karnofsky performance status (KPS) score were associated with longer survival. The median survival did not differ between groups when classified using the Graded Prognostic Assessment (GPA)-2008, Lung-molecular GPA-2017, and Lung-GPA-2021 scales. According to the Diagnosis-Specific (DS)-GPA-2012 scale, there was a significant difference between the groups. In the multivariate Cox regression survival analysis, a higher DS-GPA-2012 and improved postoperative KPS score remained significantly associated with longer survival. In conclusion, this cohort showed a mean OS of < 1 year. Improved KPS score after surgery was associated with increased survival. This cohort DS-GPA scale demonstrated the highest concordance with observed survival, indicating its potential as a valuable tool for patient stratification in surgical treatment decision-making in LMICs.
Collapse
Affiliation(s)
- Fábio Pires Botta
- Department of Neurology, Psychology and Psychiatry, UNESP - São Paulo State University. Botucatu Medical School, Botucatu, Brazil
| | | | | | - Patrícia Pintor Dos Reis
- Department of Surgery and Orthopedics, UNESP - São Paulo State University. Botucatu Medical School, Botucatu, Brazil
| | - Estela de Oliveira Lima
- Department of Internal Medicine, UNESP - São Paulo State University, Botucatu Medical School, Botucatu, Brazil
| | - Adriana Camargo Ferrasi
- Department of Internal Medicine, UNESP - São Paulo State University, Botucatu Medical School, Botucatu, Brazil
| | - Adriano Yacubian Fernandes
- Department of Neurology, Psychology and Psychiatry, UNESP - São Paulo State University. Botucatu Medical School, Botucatu, Brazil
| | - Marco Antônio Zanini
- Department of Neurology, Psychology and Psychiatry, UNESP - São Paulo State University. Botucatu Medical School, Botucatu, Brazil
| | - Pedro Tadao Hamamoto Filho
- Department of Neurology, Psychology and Psychiatry, UNESP - São Paulo State University. Botucatu Medical School, Botucatu, Brazil.
| |
Collapse
|
3
|
Lombardi I, Zanini MA, Ferrasi AC, Clara CA, Vieira Reis RM, Feijó A. 374 Cell Cycle as a Biological Marker of Aggressiveness and Therapeutic Target in Meningiomas. Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_374] [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: 03/18/2023] Open
|
4
|
Medolago NB, Ferrasi AC, da Rocha OM, de Moura Campos Pardini MI, Tommasini Grotto RM, Silva GF. HLA-DRB1 Polymorphisms and Rheumatologic Manifestations in Chronic Hepatitis C. Curr Rheumatol Rev 2022; 19:58-63. [PMID: 35733307 DOI: 10.2174/1573397118666220621151236] [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: 10/13/2021] [Revised: 02/15/2022] [Accepted: 03/30/2022] [Indexed: 02/08/2023]
Abstract
BACKGROUND/AIMS Hepatitis C has been associated with rheumatologic manifestations (HCV-related RM). Clinically, HCV-related RM may be indistinguishable from the symptoms that occur in diffuse connective tissue diseases (DCTD-related RM), making the differential diagnosis difficult. Host genetic factors, such as the Human Leukocyte Antigens (HLA) polymorphisms were associated with HCV infection, however, there are no studies that discriminate between HCVrelated RM and DCTD-related RM. This study focused on verifying associations between HLADRB1 and RM in patients with chronic hepatitis C, aiming to distinguish between DCTD-related RM and HCV-related RM. METHODS The participants were 152 individuals, of both sexes, aged between 18 and 80 years, and affected by chronic hepatitis C. The patients underwent rheumatologic physical examination and HLA-class II (HLA-DRB1) typing was performed by PCR-SSO (Polymerase Chain Reactionsequence Specific Oligonucleotides). RESULTS A significant number of patients with rheumatologic complaints (73%) not attributed to other causes was observed. DRB1*08 allele seems to confer protection against RM in chronic hepatitis C. There is no susceptibility association between HLA-DRB1 alleles and RM. CONCLUSION The absence of association between HLA-DRB1 and the rheumatologic manifestations studied suggests that the pathophysiological pathways of DCTD-related RM and HCV-related RM are distinct.
Collapse
Affiliation(s)
| | - Adriana Camargo Ferrasi
- Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University, Botucatu, Brazil
| | - Oswaldo Melo da Rocha
- Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University, Botucatu, Brazil
| | | | - Rejane Maria Tommasini Grotto
- Department of Bioprocess and Biotechnology, College of Agricultural Sciences, Sao Paulo State University, Botucatu, Brazil
| | - Giovanni Faria Silva
- Department of Bioprocess and Biotechnology, College of Agricultural Sciences, Sao Paulo State University, Botucatu, Brazil
| |
Collapse
|
5
|
Medolago NB, Ferrasi AC, Rocha OMD, Pardini MIDMC, Grotto RMT, Galvani AF, Silva GF. Human platelet antigen-3 polymorphism as a risk factor for rheumatological manifestations in hepatitis C. Rev Soc Bras Med Trop 2020; 53:e20190210. [PMID: 31994660 PMCID: PMC7083341 DOI: 10.1590/0037-8682-0210-2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 10/03/2019] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Hepatitis C virus (HCV) infection is involved in the pathogenesis of autoimmune and rheumatic disorders. Although the human platelet antigens (HPA) polymorphism are associated with HCV persistence, they have not been investigated in rheumatological manifestations (RM). This study focused on verifying associations between allele and genotype HPA and RM in patients with chronic hepatitis C. METHODS Patients (159) with chronic hepatitis C of both genders were analyzed. RESULTS Women showed association between HPA-3 polymorphisms and RM. CONCLUSIONS An unprecedented strong association between rheumatological manifestations and HPA-3 polymorphism, possibly predisposing women to complications during the disease course, was observed.
Collapse
Affiliation(s)
- Natália Bronzatto Medolago
- Universidade Estadual Paulista, Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Botucatu, SP, Brasil
| | - Adriana Camargo Ferrasi
- Universidade Estadual Paulista, Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Botucatu, SP, Brasil
| | - Oswaldo Melo da Rocha
- Universidade Estadual Paulista, Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Botucatu, SP, Brasil
| | | | - Rejane Maria Tommasini Grotto
- Universidade Estadual Paulista, Departamento de Bioprocessos e Biotecnologia, Faculdade de Ciências Agronômicas, Botucatu, SP, Brasil
| | - Aline Faria Galvani
- Universidade Estadual Paulista, Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Botucatu, SP, Brasil
| | - Giovanni Faria Silva
- Universidade Estadual Paulista, Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Botucatu, SP, Brasil
| |
Collapse
|
6
|
Affiliation(s)
- Estela de Oliveira Lima
- Universidade Estadual Paulista Júlio de Mesquita Filho - FMB - Depto. Clínica Médica, Botucatu, SP - Brazil
| | - Adriana Camargo Ferrasi
- Universidade Estadual Paulista Júlio de Mesquita Filho - FMB - Depto. Clínica Médica, Botucatu, SP - Brazil
| | - Andreas Kaasi
- Santa Casa de Misericórdia de São Paulo - Instituto de Pesquisa, Inovação Tecnológica e Educação, São Paulo, SP - Brazil
| |
Collapse
|
7
|
Hebeler-Barbosa F, Massolini VM, Watanabe T, Silva GF, Barbosa AN, Simões RP, Ferrasi AC, de Andrade Zanotto PM, de Moura Campos Pardini MI, Grotto RMT. Influence of the HIV GWG variant in the HIV infection progression in mono and HCV coinfected patients. Medicine (Baltimore) 2019; 98:e16376. [PMID: 31335686 PMCID: PMC6708615 DOI: 10.1097/md.0000000000016376] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The HIV subtype B is the most frequent in Brazil. The HIV subtype B' codes the amino acids glicine-tryptophan-glicine (GWG) instead of glicine-proline-glicine on the tip of gp120 V3 loop. This variant was associated to a slower HIV progression in mono-infected patients; however, there is no information in coinfected patients. This study evaluated the infection progression of HIV variant B' on the hepatitis C virus presence. RNA isolated from plasma of the 601 infected patients were used to human immunodeficiency virus (HIV) subtyping and to classify the virus according their syncytium-inducing ability. The HIV infection progression was evaluated by clinical and laboratorial data. The results showed a significant association between HIV B' variant and CD4 count and time of AIDS in HIV mono-infected patients. Notwithstanding the fact that we did not find a direct association between GWG variant and AIDS and in HIV coinfected patients no mitigating effect due to GWG presence was found. We did observe that the association between GWG variant and CD4 counts is lost in coinfected patients. This is first work showing influence of the HIV GWG variant in coinfected patients. Nevertheless, the presence of the GWG variant can indicate a better prognostic in the mono-infected patients.
Collapse
Affiliation(s)
- Flavia Hebeler-Barbosa
- São Paulo State University (Unesp), Medical School
- Molecular Biology Laboratory, Blood Transfusion Center
| | | | - Thais Watanabe
- São Paulo State University (Unesp), School of Agriculture, Botucatu
| | | | | | | | - Adriana Camargo Ferrasi
- São Paulo State University (Unesp), Medical School
- Molecular Biology Laboratory, Blood Transfusion Center
| | - Paolo Marinho de Andrade Zanotto
- Laboratory of Molecular Evolution and Bioinformatics (LEMB), Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, Brazil
| | | | - Rejane Maria Tommasini Grotto
- Molecular Biology Laboratory, Blood Transfusion Center
- São Paulo State University (Unesp), School of Agriculture, Botucatu
| |
Collapse
|
8
|
Grotto RMT, Santos FM, Picelli N, Silva GF, Ferrasi AC, Sarnighausen VCR, Pardini MIDMC. HPA-1a/1b could be considered a molecular predictor of poor prognosis in chronic hepatitis C. Rev Soc Bras Med Trop 2019; 52:e20170427. [PMID: 31271612 DOI: 10.1590/0037-8682-0427-2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 03/21/2019] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION HPA polymorphism has been associated with HCV presence and fibrosis progression in chronic hepatitis C. However, it is unknown if there is an association between HPA-1 polymorphism and hepatocellular carcinoma (HCC). Therefore, this study aimed to evaluate HPA-1 polymorphism in the presence of HCC. METHODS PCR-SSP was used to perform HPA genotyping on 76 HCV-infected patients. RESULTS There was no association between patients with and without HCC. There was significant difference in HPA-1 genotypic frequency distribution between HCC and F1/F2 fibrosis degree. CONCLUSIONS The HPA-1a/1b polymorphism appears to be more associated with liver damage progression than with HCC presence.
Collapse
Affiliation(s)
- Rejane Maria Tommasini Grotto
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil.,Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Bioprocessos e Biotecnologia, Botucatu, SP, Brasil
| | - Francielle Martins Santos
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - Natália Picelli
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - Giovanni Faria Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Medicina, Departamento de Clínica Médica, Botucatu, SP, Brasil
| | - Adriana Camargo Ferrasi
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil.,Universidade Estadual Paulista (UNESP), Faculdade de Medicina, Departamento de Clínica Médica, Botucatu, SP, Brasil
| | | | - Maria Inês de Moura Campos Pardini
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil.,Universidade Estadual Paulista (UNESP), Faculdade de Medicina, Departamento de Clínica Médica, Botucatu, SP, Brasil
| |
Collapse
|
9
|
Lombardi IAS, Faria MHG, Rabenhorst SHB, Zanini MA, DE Moura Campos Pardini MI, Grotto RMT, Ferrasi AC. Hypermethylation of BRCA1 Gene in Meningioma in Elderly Males. Anticancer Res 2018; 38:2819-2822. [PMID: 29715104 DOI: 10.21873/anticanres.12526] [Citation(s) in RCA: 1] [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: 01/22/2018] [Revised: 03/28/2018] [Accepted: 04/02/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Breast cancer 1, early onset (BRCA1) gene is expressed in the cells of the breast and other tissues, where it plays a role in cell-cycle regulation, transcription, repair of DNA double-stranded breaks, ubiquitination, transcriptional regulation as well as other functions, such as cell response regulation to mitogenic signals triggered by estrogens. Considering that meningioma shows greater tumor growth during pregnancy, can express estrogen receptors and proliferate in response to estrogenic stimulation, the hypothesis that this type of tumor may share molecular mechanisms that involve exposure to estrogen should be investigated. Therefore, the aim of the present study was to investigate the BRCA1 gene methylation profile in meningioma. MATERIALS AND METHODS Methylation-specific polymerase chain reaction (PCR) assay was performed on 50 meningioma samples from male and female patients. Statistical analysis was carried out using Fisher's exact test. RESULTS The most important finding of this study was that 100% of the male patients over 55 years with meningioma showed BRCA1 methylated in their tumor cells. CONCLUSION The silencing of BRCA1 through hypermethylation seems to play an important role in meningioma.
Collapse
Affiliation(s)
- Ismael Augusto Silva Lombardi
- Molecular Biology Laboratory, Transfusion Blood Center, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil.,Division of Neurosurgery, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil
| | | | - Silvia Helena Barem Rabenhorst
- Molecular Genetics Laboratory, Department of Pathology and Forensic Medicine, School of Medicine, Federal University of Ceara, Fortaleza, Brazil
| | - Marco Antônio Zanini
- Division of Neurosurgery, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil
| | - Maria Inês DE Moura Campos Pardini
- Molecular Biology Laboratory, Transfusion Blood Center, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil.,Department of Internal Medicine, Botucatu Medical School, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil
| | - Rejane Maria Tommasini Grotto
- Molecular Biology Laboratory, Transfusion Blood Center, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil.,Department of Bioprocess and Biotechnology, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil
| | - Adriana Camargo Ferrasi
- Molecular Biology Laboratory, Transfusion Blood Center, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil .,Department of Internal Medicine, Botucatu Medical School, College of Agricultural Sciences, UNESP - Sao Paulo State University, Botucatu, Brazil
| |
Collapse
|
10
|
Silva-Fernandes IJDL, Oliveira ESD, Santos JC, Ribeiro ML, Ferrasi AC, Pardini MIDMC, Burbano RMR, Rabenhorst SHB. The intricate interplay between MSI and polymorphisms of DNA repair enzymes in gastric cancer H.pylori associated. Mutagenesis 2017; 32:471-478. [DOI: 10.1093/mutage/gex013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 04/24/2017] [Indexed: 12/15/2022] Open
|
11
|
Tanikawa AA, Grotto RMT, Silva GF, Ferrasi AC, Sarnighausen VCR, Pardini MIDMC. Platelet-derived growth factor A mRNA in platelets is associated with the degree of hepatic fibrosis in chronic hepatitis C. Rev Soc Bras Med Trop 2017; 50:113-116. [PMID: 28327812 DOI: 10.1590/0037-8682-0302-2016] [Citation(s) in RCA: 6] [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: 08/03/2016] [Accepted: 09/13/2016] [Indexed: 01/29/2023] Open
Abstract
INTRODUCTION: Transforming growth factor beta 1 (TGFB1) and platelet-derived growth factor (PDGF) are the main cytokines related to hepatic fibrogenesis. METHODS: RNA isolated from the platelets and hepatic tissue of 43 HCV carriers was used for quantitative polymerase chain reaction to determine TGFB1, PDGFA, and PDGFB RNA expression. RESULTS: The mRNA expression of PDGFA in platelets was significantly lower in the group with advanced fibrosis than in the group with early-stage fibrosis. TGFB1 was more frequently expressed in platelets than in hepatic tissue, which was different from PDGFB. CONCLUSIONS: A pathway mediated by overexpression of TGFB1 via PDGFA in megakaryocytes could be involved in the development of fibrosis.
Collapse
Affiliation(s)
- Aline Aki Tanikawa
- Programa de Pós-Graduação Stricto Sensu em Fisiopatologia em Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| | - Rejane Maria Tommasini Grotto
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil.,Departamento de Bioprocessos e Biotecnologia, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| | - Giovanni Faria Silva
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| | - Adriana Camargo Ferrasi
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| | - Valéria Cristina Rodrigues Sarnighausen
- Departamento de Bioprocessos e Biotecnologia, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| | - Maria Inês de Moura Campos Pardini
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil.,Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, Brasil
| |
Collapse
|
12
|
Grotto RMT, Cantão NM, Padovani JL, Souza LDRD, Silva GF, Ferrasi AC, Pardini MIDMC. Human platelets antigens influence the viral load of platelets after the interaction of the platelets with HCV and HIV in vitro. Rev Soc Bras Med Trop 2016; 49:491-3. [DOI: 10.1590/0037-8682-0105-2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/26/2016] [Indexed: 11/21/2022] Open
|
13
|
Picelli N, Tanikawa AA, Grotto RMT, Silva GF, Barbosa AN, Ferrasi AC, Silveira LVDA, Pardini MIDMC. The absence of the human platelet antigen polymorphism effect on fibrosis progression in human immunodeficiency virus-1/hepatitis C virus coinfected patients. Rev Soc Bras Med Trop 2016; 48:406-9. [PMID: 26312929 DOI: 10.1590/0037-8682-0152-2015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 06/23/2015] [Indexed: 01/18/2023] Open
Abstract
INTRODUCTION Hepatic fibrosis progression in patients with chronic hepatitis C virus infections has been associated with viral and host factors, including genetic polymorphisms. Human platelet antigen polymorphisms are associated with the rapid development of fibrosis in HCV-monoinfected patients. This study aimed to determine whether such an association exists in human immunodeficiency virus-1/hepatitis C virus-coinfected patients. METHODS Genomic deoxyribonucleic acid from 36 human immunodeficiency virus-1/hepatitis C virus-coinfected patients was genotyped to determine the presence of human platelet antigens-1, -3, or -5 polymorphisms. Fibrosis progression was evaluated using the Metavir scoring system, and the patients were assigned to two groups, namely, G1 that comprised patients with F1, portal fibrosis without septa, or F2, few septa (n = 23) and G2 that comprised patients with F3, numerous septa, or F4, cirrhosis (n = 13). Fisher's exact test was utilized to determine possible associations between the human platelet antigen polymorphisms and fibrosis progression. RESULTS There were no deviations from the Hardy-Weinberg equilibrium in the human platelet antigen systems evaluated. Statistically significant differences were not observed between G1 and G2 with respect to the distributions of the allelic and genotypic frequencies of the human platelet antigen systems. CONCLUSION The greater stimulation of hepatic stellate cells by the human immunodeficiency virus and, consequently, the increased expression of transforming growth factor beta can offset the effect of human platelet antigen polymorphism on the progression of fibrosis in patients coinfected with the human immunodeficiency virus-1 and the hepatitis C virus.
Collapse
Affiliation(s)
- Natália Picelli
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Aline Aki Tanikawa
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Rejane Maria Tommasini Grotto
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Giovanni Faria Silva
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Alexandre Naime Barbosa
- Departamento de Doenças Tropicais, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Adriana Camargo Ferrasi
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Liciana Vaz de Arruda Silveira
- Departamento de Bioestatística, Instituto de Biociências de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| | - Maria Inês de Moura Campos Pardini
- Laboratório de Biologia Molecular do Hemocentro, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu, São Paulo, BR
| |
Collapse
|
14
|
Grotto RMT, Picelli N, de Souza LDR, Silva GF, Ferrasi AC, Silveira LVDA, Pardini MIDMC. Human Platelet Polymorphism can be a genetic marker associated with HIV/HCV coinfection. J Med Virol 2015; 87:1677-81. [PMID: 25976501 DOI: 10.1002/jmv.24233] [Citation(s) in RCA: 4] [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] [Accepted: 04/09/2015] [Indexed: 11/10/2022]
Abstract
To evaluate the associations of HPA polymorphisms -1, -3, and -5 with HIV/HCV coinfection were included in this study 60 HIV/HCV-coinfected patients from the Sao Paulo State health service centers. Data reported by Verdichio-Moraes et al. (2009: J. Med Virol 81:757-759) were used as the non-infected and HCV monoinfected groups. Human Platelet Polymorphism genotyping was performed in 60 Patients co-infected with HIV/HCV by PCR-SSP or PCR-RFLP. HIV subtyping and HCV genotyping was performed by RT-PCR followed sequencing. The data analyses were performed using the χ2 test or Fisher's Exact Test and the logistic regression model. Patients coinfected with HIV/HCV presented HCV either genotype 1 (78.3%) or non-1 (21.7%) and HIV either subtype B (85.0%) or non-B (15%). The Human Platelet Polymorphism-1a/1b genotype was more frequent (P < 0.05) in HIV/HCV coinfection than in HCV monoinfection and the allelic frequency of Human Platelet Polymorphism-5b in the Patients coinfected with HIV/HCV was higher (P < 0.05) than in HCV monoinfected cases and non-infected individuals. These data suggest that the presence of specific HPA allele on platelets could favor the existence of coinfection. On the other hand, Human Platelet Polymorphism-5a/5b was more frequent (P < 0.05) in HIV/HCV coinfected and HCV monoinfected groups than in the non-infected individuals, suggesting that this platelet genotype is related to HCV infection, regardless of HIV presence. Results suggest that the Human Platelet Polymorphism profile in HIV/HCV coinfected individuals differs from the one of both HCV monoinfected and non-infected population. So, the Human Platelet Polymorphism can be a genetic marker associated with HIV/HCV coinfection.
Collapse
Affiliation(s)
- Rejane Maria Tommasini Grotto
- Molecular Biology Laboratory, Blood Transfusion Center, Botucatu Medical School, Sao Paulo State University, UNESP, São Paulo, Brazil.,Department of Bioprocess and Biotechnology, School of Agricultural Sciences, Lageado Experiment Station. Sao Paulo State University, UNESP, Botucatu-SP, Brazil
| | - Natália Picelli
- Molecular Biology Laboratory, Blood Transfusion Center, Botucatu Medical School, Sao Paulo State University, UNESP, São Paulo, Brazil
| | - Lenice do Rosário de Souza
- Tropical Diseases Department, Botucatu Medical School, Sao Paulo State University UNESP, São Paulo, Brazil
| | - Giovanni Faria Silva
- Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University UNESP, São Paulo, Brazil
| | - Adriana Camargo Ferrasi
- Molecular Biology Laboratory, Blood Transfusion Center, Botucatu Medical School, Sao Paulo State University, UNESP, São Paulo, Brazil.,Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University UNESP, São Paulo, Brazil
| | | | - Maria Inês de Moura Campos Pardini
- Molecular Biology Laboratory, Blood Transfusion Center, Botucatu Medical School, Sao Paulo State University, UNESP, São Paulo, Brazil.,Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University UNESP, São Paulo, Brazil
| |
Collapse
|
15
|
Alves MKS, Faria MHG, Neves Filho EHC, Ferrasi AC, Pardini MIDMC, de Moraes Filho MO, Rabenhorst SHB. CDKN2A promoter hypermethylation in astrocytomas is associated with age and sex. Int J Surg 2013; 11:549-53. [PMID: 23721661 DOI: 10.1016/j.ijsu.2013.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 02/14/2013] [Revised: 04/24/2013] [Accepted: 05/17/2013] [Indexed: 11/16/2022]
Abstract
CDKN2A promoter hypermethylation has been widely related to many cancers. In astrocytomas, although CDKN2A (p16(INK4A) protein) is often inactivated, there are still some controversial issues regarding the mechanism by which this alteration occurs. Thus, we analyzed a series of astrocytomas to assess the association between CDKN2A expression and methylation of grade I-IV tumors (WHO) and clinicopathological parameters. DNA extracted from formalin-fixed paraffin-embedded material of 93 astrocytic tumors was available for CDKN2A promoter methylation analysis and p16(INK4A) expression by methylation-specific PCR and immunohistochemistry, respectively. A strong negative correlation between nuclear and cytoplasmic immunostaining and CDKN2A promoter methylation was found. Additionally, a significant negative correlation between CDKN2A promoter methylation and age was observed; also, female patients had statistically more CDKN2A methylated promoters (p = 0.036) than men. In conclusion, CDKN2A inactivation by promoter methylation is a frequent event in astrocytomas and it is related to the age and sex of patients.
Collapse
Affiliation(s)
- Markênia Kélia Santos Alves
- Universidade Federal do Ceará, Department of Pathology and Forensic Medicine, Rua Alexandre Baraúna, 949, Porangabussu, CEP 60183-630 Fortaleza, Brazil.
| | | | | | | | | | | | | |
Collapse
|
16
|
de Lima MAP, Ferreira MVP, Barros MAP, Pardini MIDMC, Ferrasi AC, Rabenhorst SHB. Epstein-Barr virus-associated gastric carcinoma in Brazil: comparison between in situ hybridization and polymerase chain reaction detection. Braz J Microbiol 2012; 43:393-404. [PMID: 24031845 PMCID: PMC3769002 DOI: 10.1590/s1517-838220120001000048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Indexed: 01/07/2023] Open
Abstract
Epstein-Barr virus (EBV) has been associated with 10% of gastric carcinomas. The aim of this study was to determine the frequency of EBV in gastric carcinomas in Brazil assessed by in situ hybridization (ISH) and PCR, which would contribute to the characterization of the clinical and pathological aspects of EBV-associated gastric carcinomas. One hundred and ninety-two gastric carcinoma cases were collected at hospitals in two Brazilian states. Seventy-three out of 151 cases were PCR(+), while 11/160 cases were ISH(+). Nine out of eleven ISH(+) cases displayed a diffuse staining pattern and 2 out of 11 a focal pattern. Both techniques showed that the EBV(+) cases were characterized by their association with males, older patients, lower gastric region, intestinal type, advanced stage and poorly to moderately differentiated tumors. The concordance between the two techniques was 55.8% (Cohen's kappa index = 0.034). Four cases were ISH(+)/PCR(-), while 49 cases were PCR(+)/ISH(-). Only two cases showed stained lymphocytes by ISH and one of them was PCR(-). The observed discrepancy between the two techniques could not be explained just by the elevated accuracy of PCR. ISH(+)/PCR(-) carcinomas may be encountered if EBV is not present in the whole tumor tissue or if there are polymorphisms in the sequences of the viral genome amplified. On the other hand, the high frequency of PCR(+) results associated with the absence of ISH staining in lymphocytes and/or tumors cells suggests that the virus may be present in tumor cells or other cell types without expressing EBER1, the target of the ISH technique.
Collapse
Affiliation(s)
- Marcos Antonio Pereira de Lima
- Setor de Microbiologia, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará , Fortaleza, CE , Brasil
| | | | | | | | | | | |
Collapse
|
17
|
Silva GF, Grotto RMT, Verdichio-Moraes CF, Corvino SM, Ferrasi AC, Silveira LVDA, Pardini MIDMC. Human platelet antigen genotype is associated with progression of fibrosis in chronic hepatitis C. J Med Virol 2012; 84:56-60. [PMID: 22095535 DOI: 10.1002/jmv.22191] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Although progression of fibrosis in the chronic hepatitis C depends on environmental, viral, and host factors, genetic polymorphisms have been associated recently with this progression, including the expression of integrins, adhesion proteins. Some integrins expressed on the platelet membrane show polymorphic antigenic determinants called human platelet antigens (HPA), where the major ones are HPA-1, -3, -5. The association between HCV infection and HPA-5b has been demonstrated. Similarly, the HPA profile could determine if HPA is related to progression of fibrosis. The goal of this study was to evaluate the association between the frequencies of HPA-1, -3, and -5 and degree of fibrosis in HCV-infected patients. Genomic DNA from 143 HCV-infected patients was used as the source for HPA genotyping by PCR-SSP or PCR-RFLP. Progression of fibrosis was evaluated using the METAVIR scoring system, and the patients were grouped according to degree of fibrosis into G1 (n = 81, with F1, portal fibrosis without septa or F2, few septa) and G2 (n = 62, with F3, numerous septa, or F4, cirrhosis). Statistical analysis was performed using the proportional odds model. The genotypic frequency of HPA-1a/1b was significantly higher in the patients in G2. To evaluate the influence of the time of infection to the development of fibrosis and its effect on the genetic factor HPA-1, 96 patients from 143 studied were evaluated considering the time of HCV infection, and these results suggest that the HPA-1a/1b genotype promotes the development of fibrosis in HCV infection with time.
Collapse
Affiliation(s)
- Giovanni Faria Silva
- Gastroenterology Division, Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu-SP, Brazil
| | | | | | | | | | | | | |
Collapse
|
18
|
Lima MAPD, Ferreira MVP, Barros MAP, Pardini MIDMC, Ferrasi AC, Rabenhorst SHB. Epstein-Barr virus-associated gastric carcinoma in Brazil: comparison between in situ hybridization and polymerase chain reaction detection. Braz J Microbiol 2012. [DOI: 10.1590/s1517-83822012000100048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
19
|
Alves MKS, Ferrasi AC, Lima VP, Ferreira MVP, de Moura Campos Pardini MI, Rabenhorst SHB. Inactivation of COX-2, HMLH1 and CDKN2A gene by promoter methylation in gastric cancer: relationship with histological subtype, tumor location and Helicobacter pylori genotype. Pathobiology 2011; 78:266-76. [PMID: 21849808 DOI: 10.1159/000329475] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Accepted: 05/10/2011] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE We aimed to evaluate the inactivation of COX-2, HMLH1 and CDKN2A by promoter methylation and its relationship with the infection by different Helicobacter pylori strains in gastric cancer. METHODS DNA extracted from 76 H. pylori-positive gastric tumor samples was available for promoter methylation identification by methylation-specific PCR and H. pylori subtyping by PCR. Immunohistochemistry was used to determine COX-2, p16(INK4A) and HMLH1 expression. RESULTS A strong negative correlation was found between the expression of these markers and the presence of promoter methylation in their genes. Among cardia tumors, negativity of p16(INK4A) was a significant finding. On the other hand, in noncardia tumors, the histological subtypes had different gene expression patterns. In the intestinal subtype, a significant finding was HMLH1 inactivation by methylation, while in the diffuse subtype, CDKN2A inactivation by methylation was the significant finding. Tumors with methylated COX-2 and HMLH1 genes were associated with H. pylori vacA s1 (p = 0.025 and 0.047, respectively), and the nonmethylated tumors were associated with the presence of the gene flaA. CONCLUSIONS These data suggest that the inactivation of these genes by methylation occurs by distinct pathways according to the histological subtype and tumor location and depends on the H. pylori genotype.
Collapse
|
20
|
Lima MAPD, Ferreira MVP, Barros MAP, Pardini MIDMC, Ferrasi AC, Rabenhorst SHB. Detecção do vírus Epstein-Barr (EBV) em adenocarcinomas gástricos procedentes dos estados do Ceará e de São Paulo. J Bras Patol Med Lab 2011. [DOI: 10.1590/s1676-24442011000200013] [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: 11/22/2022] Open
|
21
|
Braz MG, Mazoti MÁ, Giacobino J, Braz LG, Golim MDA, Ferrasi AC, de Carvalho LR, Braz JRC, Salvadori DMF. Genotoxicity, cytotoxicity and gene expression in patients undergoing elective surgery under isoflurane anaesthesia. Mutagenesis 2011; 26:415-20. [PMID: 21257718 DOI: 10.1093/mutage/geq109] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
There are numerous studies reporting on the effects of inhalation anaesthesia in cells of exposed individuals but not much is known about the ability of isoflurane (ISF) to induce oxidative DNA damage. However, surgery is often associated with a temporary perioperative immunological alteration, and some volatile anaesthetics seem to contribute to a transient lymphocytopenia after surgery. We conducted a study to evaluate a possible genotoxic effect, including oxidative DNA damage, and apoptosis in peripheral lymphocytes of 20 patients American Society of Anaesthesiologists physical status I undergoing minor elective surgery lasting at least 120 min, under anaesthesia with ISF. We also investigated the expression of several genes in blood cells. Blood samples were collected at three time points: before anaesthesia (T(1)), 2 h after the beginning of anaesthesia (T(2)) and on the first post-operative day (T(3)). General DNA damage and oxidised bases (Fpg and endo III-sites) in blood lymphocytes were evaluated using the comet assay. Lymphocytes were phenotyped and apoptosis was evaluated by flow cytometry. In addition, expressions of hOGG1 and XRCC1, genes involved in DNA repair, and BCL2, a gene related to apoptosis, were assessed by quantitative real-time polymerase chain reaction. Results showed no statistically significant difference in the level of DNA damage and oxidised bases among the three sampling times. Anaesthesia with ISF did not increase the percentage of cells in early or late apoptosis in cytotoxic or helper T lymphocytes. Lower hOGG1 and BCL2 expressions were detected at T(3) in comparison to the other two previous time points, and there was significantly lower expression of XRCC1 at T(3) in relation to T(2). In conclusion, the exposure to ISF did not result in genotoxicity and cytotoxicity in lymphocytes and in toxicogenomic effect in leukocytes, although DNA repair and apoptosis-related genes were down-regulated on the first post-operative day.
Collapse
Affiliation(s)
- Mariana Gobbo Braz
- Department of Pathology, UNESP - Univ Estadual Paulista, 18618-970, Botucatu-São Paulo, Brasil.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Alves MKS, Lima VP, Ferrasi AC, Rodrigues MA, De Moura Campos Pardini MI, Rabenhorst SHB. CDKN2A promoter methylation is related to the tumor location and histological subtype and associated with Helicobacter pylori flaA(+) strains in gastric adenocarcinomas. APMIS 2010; 118:297-307. [PMID: 20402675 DOI: 10.1111/j.1600-0463.2010.02591.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Promoter hypermethylation of CDKN2A (p16INK4A protein) is the main mechanism of gene inactivation. However, its association with Helicobacter pylori infection is a controversial issue. Therefore, we examined a series of gastric adenocarcinomas to assess the association between p16INK4A inactivation and H. pylori genotype (vacA, cagA, cagE, virB11 and flaA) according to the location and histological subtype of the tumors. p16INK4A expression and CDKN2A promoter methylation were found in 77 gastric adenocarcinoma samples by immunohistochemistry and methylation-specific PCR, respectively. Helicobacter pylori infection and genotype were determined by PCR. A strong negative correlation between immunostaining and CDKN2A promoter region methylation was found. In diffuse subtype tumors, the inactivation of p16INK4A by promoter methylation was unique in noncardia tumors (p=0.022). In addition, H. pylori-bearing flaA was associated with non-methylation tumors (p=0.008) and H. pylori strain bearing cagA or vacAs1m1 genes but without flaA was associated with methylated tumors (p=0.022 and 0.003, respectively). Inactivation of p16INK4A in intestinal and diffuse subtypes showed distinct carcinogenic pathways, depending on the tumor location. Moreover, the process of methylation of the CDKN2A promoter seems to depend on the H. pylori genotype. The present data suggest that there is a differential influence and relevance of H. pylori genotype in gastric cancer development.
Collapse
Affiliation(s)
- Markênia Kélia Santos Alves
- Microbiology Section, Department of Pathology and Forensic Medicine, Federal University of Ceará, Porangabussu Campus, Ceará, Brazil.
| | | | | | | | | | | |
Collapse
|
23
|
Ferrasi AC, Pinheiro NA, Rabenhorst SHB, Caballero OL, Rodrigues MAM, Carvalho F, Souza Leite CV, Ferreira MVP, Barros MAP, Pardini MIMC. Helicobacter pylori and EBV in gastric carcinomas: Methylation status and microsatellite instability. World J Gastroenterol 2010; 16:312-9. [PMID: 20082476 PMCID: PMC2807951 DOI: 10.3748/wjg.v16.i3.312] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM: To verify the methylation status of CDH1, DAPK, COX2, hMLH1 and CDKN2A genes and to evaluate their association with Helicobacter pylori (H. pylori)-cagA+ and Epstein Barr virus (EBV) infections in gastric adenocarcinomas.
METHODS: Methylation-specific PCR (MSP) assay was performed in 89 primary gastric carcinomas (intestinal and diffuse types). Microsatellite instability (MSI) analysis was performed using the BAT26 primer set and PCR products were analyzed with the ABI PRISM 3100 Genetic Analyzer using Genescan 3.7 software (Applied Biosystems). Detection of H. pylori and genotyping were performed by PCR, using specific primers for ureaseC and cagA genes. The presence of EBV was assessed by in situ hybridization. Statistical analyses were performed using the χ2 or Fisher’s exact test.
RESULTS: The most frequent hypermethylated gene was COX-2 (63.5%) followed by DAPK (55.7%), CDH1 (51%), CDKN2A (36%) and hMLH1 (30.3%). Intestinal and diffuse adenocarcinomas showed different methylation profiles and there was an association between methylation of E-CDH1 and H. pylori-cagA+ in the intestinal adenocarcinoma type. MSI was correlated with hMLH1 methylation. There was an inverse correlation between DAPK hypermethylation and MSI.
CONCLUSION: We found a strong association between CDH1 methylation and H. pylori-cagA+ in intestinal-type gastric cancer, association of MSI and better prognosis and an heterogeneous COX-2 overexpression.
Collapse
|