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Martins-de-Barros AV, da Costa Araújo FA, Barros AMI, Dos Santos EGF, Barbosa Neto AG, da Silva HAM, de Lima ELS, Muniz MTC, Neves RFSN, de Hollanda Valente RO, de Oliveira E Silva ED, de Vasconcelos Carvalho M. It was not possible to detect BRAF V600E mutation in circulating cell-free DNA from patients with ameloblastoma: A diagnostic accuracy study. J Oral Pathol Med 2024; 53:258-265. [PMID: 38494749 DOI: 10.1111/jop.13529] [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: 11/15/2023] [Revised: 01/30/2024] [Accepted: 03/05/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND The objective of this study is to evaluate the diagnostic accuracy of plasma-based liquid biopsy for the detection of the BRAF V600E mutation in circulating cell-free DNA from patients with ameloblastoma. METHODS This is a prospective diagnostic accuracy study conducted based on the Standards for Reporting Diagnostic Accuracy recommendations. The index test was the plasma-based liquid biopsy, whereas the reference standard was the conventional tissue biopsy. The target condition was the detection of BRAF V600E mutation. The study population consisted of individuals with ameloblastoma recruited from three tertiary hospitals from Brazil. A negative control group composed of three individuals with confirmed wild-type BRAF lesions were included. The participants underwent plasma circulating cell-free DNA and tumor tissue DNA isolation, and both were submitted to using competitive allele-specific TaqMan™ real-time polymerase chain reaction technology mutation detection assays. Sensitivity and specificity measures and positive and negative predictive values were calculated. RESULTS Twelve patients with conventional ameloblastoma were included. BRAF V600E mutation was detected in 11/12 (91.66%) ameloblastoma tissue samples. However, the mutation was not detected in any of the plasma-based liquid biopsy circulating cell-free DNA samples in both ameloblastomas and negative control group. The sensitivity and specificity of plasma-based liquid biopsy for the detection of the BRAF V600E mutation in circulating cell-free DNA was 0.0 and 1.0, respectively. The agreement between index test and reference standard results was 26.66%. CONCLUSION Plasma-based liquid biopsy does not seem to be an accurate method for the detection of the BRAF V600E mutation in circulating circulating cell-free DNA from patients with ameloblastoma, regardless of tumor size, anatomic location, recurrence status, and other clinicopathological features.
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Affiliation(s)
- Allan Vinícius Martins-de-Barros
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Fábio Andrey da Costa Araújo
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Ana Maria Ipólito Barros
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | | | - Adauto Gomes Barbosa Neto
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Elker Lene Santos de Lima
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | | | | | - Emanuel Dias de Oliveira E Silva
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Marianne de Vasconcelos Carvalho
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
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Martins-de-Barros AV, da Costa Araújo FA, Faro TF, de Aquino AAT, Barbosa Neto AG, da Silva HAM, de Lima ELS, Muniz MTC, de Oliveira E Silva ED, de Vasconcelos Carvalho M. BRAF p.V600E Mutational Status Does Not Correlate with Biological Behavior in Conventional Ameloblastomas: A Disease-Free Survival Analysis. Head Neck Pathol 2024; 18:23. [PMID: 38504068 PMCID: PMC10951168 DOI: 10.1007/s12105-024-01621-w] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 01/27/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND Dysregulation of the MAPK pathway appears to exert a pivotal role in the pathogenesis of ameloblastomas, since BRAF p.V600E has been reported in over 65% of the tumors. Therefore, the purpose of this study was to investigate whether the BRAF p.V600E is related to biological behavior and disease-free survival in patients with conventional ameloblastomas. METHODS This is a retrospective cohort study based on the STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) recommendations. The study population consisted of individuals treated for conventional ameloblastomas. Clinical, imaging, histomorphological, immunohistochemical (Ki67 and CD138/syndecan-1), and molecular BRAF p.V600E mutation analyses were performed. Bivariate statistical analysis was performed through chi-square and Fisher's exact tests. Kaplan-Meier analysis with log-rank test and Cox proportional hazards regression were used to identify predictors of disease-free survival, with a significance level of 5%. RESULTS Forty-one individuals were included, with a male-to-female ratio of 1.15:1. BRAF p.V600E mutation was identified in 75.6% of the tumors. No association between the BRAF mutational status and other clinical, imaging, histomorphological, and immunohistochemical variables was observed. Only the initial treatment modality was significantly associated with a better prognosis in univariate (p = 0.008) and multivariate (p = 0.030) analyses, with a hazard ratio of 9.60 (95%IC = 1.24-73.89), favoring radical treatment. CONCLUSION BRAF p.V600E mutation emerges as a prevalent molecular aberration in ameloblastomas. Nevertheless, it does not seem to significantly affect the tumor proliferative activity, CD138/syndecan-1-mediated cell adhesion, or disease-free survival outcomes.
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Affiliation(s)
| | - Fábio Andrey da Costa Araújo
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil.
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil.
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Pernambuco, Rua Arnóbio Marquês, 310, Santo Amaro, Recife, Pernambuco, 50100-130, Brazil.
| | - Tatiane Fonseca Faro
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Adauto Gomes Barbosa Neto
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Elker Lene Santos de Lima
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Emanuel Dias de Oliveira E Silva
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Marianne de Vasconcelos Carvalho
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
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de Lima BL, de Lima ELS, Muniz MTC, Domingues ALC, Silva PCV. Association of Tumor Necrosis Factor-α (-G308A) Polymorphism with risk of Upper Gastrointestinal Bleeding from Schistosomiasis in Pernambuco. Rev Soc Bras Med Trop 2023; 56:e0654. [PMID: 36820674 PMCID: PMC9957119 DOI: 10.1590/0037-8682-0654-2021] [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: 11/28/2021] [Accepted: 08/22/2022] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND We evaluated the association between polymorphisms in the tumor necrosis factor alpha (TNF-α) (-G308A) gene and upper gastrointestinal bleeding (UGIB) in schistosomiasis. METHODS This was a transverse study involving 294 Brazilian patients infected with Schistosoma mansoni. RESULTS The homozygous A/A genotype in TNF-α (-G308A) showed a risk association (prevalence ratio = 1.90, p = 0.008) with UGIB. There was no statistically significant difference in serum TNF-α levels between the clinical groups. CONCLUSIONS The polymorphic TNF-α (-G308A) can be a risk factor for UGIB, in addition to being a potentially predictive factor for the severity of UGIB in schistosomiasis.
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Affiliation(s)
| | - Elker Lene Santos de Lima
- Universidade de Pernambuco, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz, Laboratório de Biologia Molecular, Recife, PE, Brasil
| | - Maria Tereza Cartaxo Muniz
- Universidade de Pernambuco, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz, Laboratório de Biologia Molecular, Recife, PE, Brasil., Universidade de Pernambuco, Instituto de Ciências Biológicas, Recife, PE, Brasil
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de Lemos GM, Resende CMM, Campello CP, Ribeiro IS, Mendes AK, de Lima ELS, de Oliveira RMDC, Barbosa Filho VC, Correia MJ, Muniz MTC. Is oral microbiota associated with overweight and obesity in children and adolescents? A systematic review. Crit Rev Food Sci Nutr 2022; 64:4275-4285. [PMID: 36419361 DOI: 10.1080/10408398.2022.2140330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This article aims to verify the relationship between the composition and diversity of oral microbiota with overweight and obese children and adolescents. This systematic review was registered in PROSPERO, followed PRISMA 2020, and included an electronic search until March 2022, in PubMed/MEDLINE, Web of Science, Scopus, and The Cochrane Library databases. Studies were eligible if they compared the oral microbiota according to nutrition status among children and adolescents. Independent peers using JBI Critical Appraisal Checklists assessed the quality of studies. Eleven studies were eligible to be included in this review, with a total of 1,695 children and adolescents, 224 were obese, 190 were overweight, 1,154 were eutrophics and 127 were underweight. The most frequent phyla in overweight and obese children and adolescents, in comparison to their counterparts were Firmicutes, Bacteroidetes, Proteobacteria, Actinobacteria and Fusobacteria. It was identified that nine of the eleven articles selected showed an association between oral microbiota and overweight and obesity in children and adolescents. We observed that there is an important association between oral bacterial composition diversity and overweight and obesity. This finding indicates the relevance of the evaluation and surveillance in oral health to control cases of overweight and obesity in children and adolescents.
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Affiliation(s)
- Geisy Muniz de Lemos
- Graduate Program in Biotechnology, Northeast Biotechnology Network, Federal Rural University of Pernambuco, Recife, Brazil
| | | | - Camilla Porto Campello
- Laboratory of Molecular Biology, Hospital Universitário Oswaldo Cruz, University of Pernambuco, Recife, Brazil
| | - Isabela Silva Ribeiro
- Graduate Program in Molecular and Cell Biology, University of Pernambuco, Recife, Brazil
| | - Ana Karina Mendes
- Faculty of Dental Medicine, Center for Interdisciplinary Research in Health, Portuguese Catholic University, Viseu, Portugal
| | | | | | | | - Maria José Correia
- Faculty of Dental Medicine, Center for Interdisciplinary Research in Health, Portuguese Catholic University, Viseu, Portugal
| | - Maria Tereza Cartaxo Muniz
- Graduate Program in Biotechnology, Northeast Biotechnology Network, Federal Rural University of Pernambuco, Recife, Brazil
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Campello CP, Lima ELSD, Fernandes RSM, Porto M, Muniz MTC. TNF-α levels and presence of SNP-308G/A of TNF-α gene in temporomandibular disorder patients. Dental Press J Orthod 2022; 27:e2220159. [PMID: 35239943 PMCID: PMC8896744 DOI: 10.1590/2177-6709.27.1.e2220159.oar] [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: 05/06/2020] [Accepted: 01/11/2021] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Temporomandibular disorder (TMD) refers to a group of conditions that compromise the harmonious movement and function of the temporomandibular joint, masticatory muscles, and associated structures. The etiopathogenesis of TMD is multifactorial but not well-understood, with the role of genetic factors still being unclear. OBJECTIVE This review aims to summarize the results of studies that evaluated TNF-α levels and the -308G/A TNF-α polymorphism in TMD patients. This study emphasizes the importance of a more selective treatment involving TNF-α inhibitors that can potentially reduce inflammation and pain, and improve quality of life. METHODS The MEDLINE/PubMed database, Cochrane Library, and Web of Science database were searched for case-control studies published until September 2020 that compared levels of TNF-α or presence of its -308G/A polymorphism in TMD patients and healthy individuals. RESULTS Six case-control studies were identified with a total of 398 TMD patients, aged between 12 and 78 years. The control group consisted of 149 subjects, aged between 18 and 47 years. The occurrence of TMD was predominant in females. Majority of studies found high TNF-α levels in TMD patients, compared to the control group. One of these studies found a positive correlation between the GA genotype and the development of TMD. CONCLUSION Majority of the TMD patients showed elevated TNF-α levels, and a possible explanation for this could be the presence of the -308G/A polymorphism.
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Affiliation(s)
- Camilla Porto Campello
- Universidade Federal Rural de Pernambuco, Programa de Pós-Graduação em Biotecnologia, Rede Nordeste de Biotecnologia (Recife/PE, Brazil).,Universidade de Pernambuco, Hospital Universitário Oswaldo Cruz, Laboratório de Biologia Molecular-CEONHPE (Recife/PE, Brazil)
| | - Elker Lene Santos de Lima
- Universidade de Pernambuco, Faculdade de Ciências Médicas, Programa de Pós-Graduação em Ciências da Saúde (Recife/PE, Brazil).,Universidade de Pernambuco, Hospital Universitário Oswaldo Cruz, Laboratório de Biologia Molecular-CEONHPE (Recife/PE, Brazil)
| | | | - Mirza Porto
- Universidade Católica de Pernambuco, Assessoria de Treinamento, Estágio, Pesquisa e Integração - ASTEPI (Recife/PE, Brazil)
| | - Maria Tereza Cartaxo Muniz
- Universidade de Pernambuco, Hospital Universitário Oswaldo Cruz, Laboratório de Biologia Molecular-CEONHPE (Recife/PE, Brazil).,Universidade de Pernambuco, Instituto de Ciências Biológicas (Recife/PE, Brazil)
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Campello CP, Moraes SLD, Vasconcelos BCDE, Lima ELSD, Pellizzer EP, Lemos CAA, Muniz MTC. Polymorphisms of the serotonin receptors genes in patients with bruxism: a systematic review. J Appl Oral Sci 2022; 29:e20210262. [PMID: 35019025 PMCID: PMC8772883 DOI: 10.1590/1678-7757-2021-0262] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 11/04/2021] [Indexed: 11/22/2022] Open
Abstract
This study aimed to investigate if SNP rs6313, SNP rs2770304, SNP rs4941573, and SNP rs1923884 of the 5-HT2A receptor gene and SNP rs6295 of the 5-HT1A receptor gene are associated with bruxism etiology. METHODOLOGY This systematic review was registered in PROSPERO (CRD42018094561). A search was conducted for articles published in or before May 2021. To qualify for eligibility in this review, the studies had to be case-controls, cohort or cross-sectional. The inclusion criteria were the articles with a group of patients with bruxism and a control group in which the presence of these SNPs was evaluated. The exclusion criteria were the investigations of other polymorphisms, the studies that did not consider a control group for comparison, case reports, and reviews. The NOS and JBI were used to evaluate the methodological quality of studies. RESULTS We conducted this study with databases, such as Web of Science, Scopus, Embase, PubMed/MEDLINE, and ProQuest. We considered four studies eligible. A total of 672 participants were included,187 with sleep bruxism, 105 with awake bruxism, 89 with sleep and awake bruxism, and 291 controls. One study found a strong association between the SNPs rs6313, rs2770304 and rs4941573 of the 5-HT2A receptor gene and sleep bruxism. In one study, we considered the C allele of the SNP rs2770304 a risk factor for sleep bruxism. We found no significant results of other SNPs in sleep bruxers compared to controls. We found no positive association concerning the SNPs and groups of awake bruxism and sleep and awake bruxism. CONCLUSION The different results regarding the SNPs in sleep bruxers could be explained by the genetic distinction between Chilean, Mexican, Japanese, and Polish population. More clinical trials and prospective studies must be conducted with larger sample size and in different ethnicities to confirm the results of this review.
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Affiliation(s)
- Camilla Porto Campello
- Rede Nordeste de Biotecnologia - RENORBIO, UFRPE/UPE, Programa de Pós-graduação em Biotecnologia, Recife, PE, Brasil
| | | | | | - Elker Lene Santos de Lima
- Universidade de Pernambuco - UPE, Faculdade de Ciências Médicas, Programa de Pós-graduação em Ciências da Saúde, Recife, PE, Brasil
| | - Eduardo Piza Pellizzer
- Universidade Estadual Paulista - UNESP, Faculdade de Odontologia de Araçatuba, Departamento de Materiais Odontológicos e Prótese, Araçatuba, SP, Brasil
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de Aguiar Coelho Silva Madeiro B, Peeters K, Santos de Lima EL, Amor‐Barris S, De Vriendt E, Jordanova A, Cartaxo Muniz MT, da Cunha Correia C. HINT1 founder mutation causing axonal neuropathy with neuromyotonia in South America: A case report. Mol Genet Genomic Med 2021; 9:e1783. [PMID: 34562060 PMCID: PMC8580089 DOI: 10.1002/mgg3.1783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/18/2021] [Accepted: 08/02/2021] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Recessive loss-of-function mutations in HINT1 are associated with predominantly motor axonal peripheral neuropathy with neuromyotonia. Twenty-four distinct pathogenic variants are reported all over the world, including four confirmed founder variations in Europe and Asia. The majority of patients carry the ancient Slavic founder variant c.110G>C (p.Arg37Pro) that shows a distribution gradient from east to west throughout Europe. METHODS We report a case of HINT1 neuropathy in South America, identified by massive parallel sequencing of a neuropathy gene panel. To investigate the origin of the variant, we performed haplotyping analysis. RESULTS A Brazilian adolescent presented with recessive axonal motor neuropathy with asymmetric onset and fasciculations. Neuromyotonia was found on needle electromyography. His parents were not consanguineous and had no European ancestry. The patient carried biallelic pathogenic p.Arg37Pro alterations in the first exon of HINT1. Both alleles were identical by descent and originated from the same ancestral founder allele as reported in Europe. CONCLUSION Our findings expand the geographic distribution of HINT1 neuropathy to South America, where we describe a recognized founder variant in a Brazilian adolescent with no apparent European ancestry. We confirm the association of the hallmark sign of neuromyotonia with the disease.
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Affiliation(s)
| | | | | | | | - Els De Vriendt
- VIB‐UAntwerp Center for Molecular NeurologyAntwerpBelgium
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Oliveira SGD, Souza IBFD, Constantino TDS, Silva PCV, Lima ELSD, Muniz MTC, Domingues ALC. Association of the polymorphism Exon 1 (A/O) region of the mannose-binding lectin gene and periportal fibrosis regression in schistosomiasis after specific treatment. Rev Soc Bras Med Trop 2021; 54:e01452020. [PMID: 33338108 PMCID: PMC7747812 DOI: 10.1590/0037-8682-0145-2020] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 08/10/2020] [Indexed: 11/22/2022] Open
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de Morais VMS, de Lima ELS, Cahú GGDOM, Lopes TRR, Gonçales JP, Muniz MTC, Coêlho MRCD. MBL2 gene polymorphisms in HHV-8 infection in people living with HIV/AIDS. Retrovirology 2018; 15:75. [PMID: 30482213 PMCID: PMC6260567 DOI: 10.1186/s12977-018-0456-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 11/16/2018] [Indexed: 02/01/2023] Open
Abstract
Background Host genetic factors such as MBL2 gene polymorphisms cause defects in the polymerization of MBL protein and result in a functional deficiency and/or in low serum levels that can influence susceptibility to various viral infections. The aim of this study was to estimate the frequency of alleles, genotypes and haplotypes related to -550, -221 and exon 1 polymorphisms of the MBL2 gene and investigate their association with HHV-8 in people living with HIV/AIDS (PLWHA), as well as the impacts on CD4 cell count and HIV viral load in HIV/HHV-8 coinfected and HIV monoinfected patients. Results A cross sectional study in PLWHA, with and without HHV-8 infection, exploring associations between different factors, was performed in the outpatient infectious and parasitic diseases clinic at a referral hospital. Genomic DNA extractions from leukocytes were performed using a commercial Wizard®Genomic DNA Purification kit (Promega, Madison, WI). The promoter region (-550 and -221) was genotyped with the TaqMan system (Applied TaqMan Biosystems® genotyping Assays), and the structural region (exon1) was genotyped with Express Sybr Greener Supermix kit (Invitrogen, USA). In total, 124 HIV/HHV-8 coinfected and 213 HIV monoinfected patients were analysed. Median TCD4 counts were significantly lower in HIV/HHV-8 coinfected patients, whereas the mean of the first and last viral load of HIV did not present significant difference. There was no difference in frequency between the LL, YY and AA genotypes between the HIV/HHV-8 coinfected or HIV monoinfected patients. However, in a multivariate analysis, coinfected patients with the intermediate expression haplotype of the MBL2 gene had an odds ratio of 3.1-fold (CI = 1.2–7.6) of their last CD4 cell count being below 350 cells/mm3. Among the coinfected individuals, four developed KS and presented the intermediate expression MBL haplotype, with three being HYA/LXA and one being LYA/LYO. Conclusions Host genetic factors, such as -550, -221 and exon 1 polymorphisms, can be related to the may modify coinfections and/or to the development clinical manifestations caused by HHV-8, especially in HIV/HHV-8 coinfected patients who present the intermediate expression haplotypes of MBL.
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Affiliation(s)
- Viviane Martha Santos de Morais
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Elker Lene Santos de Lima
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Georgea Gertrudes de Oliveira Mendes Cahú
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Thaisa Regina Rocha Lopes
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Juliana Prado Gonçales
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Maria Tereza Cartaxo Muniz
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Maria Rosângela Cunha Duarte Coêlho
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil. .,Departament of Physiology and Pharmacology, Center of Biological Sciences, Federal University of Pernambuco, Recife, PE, Brazil.
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Silva PCV, Gomes AV, de Britto LRPB, de Lima ELS, da Silva JL, Montenegro SML, Muniz MTC, Domingues ALC. Influence of a TNF-α Polymorphism on the Severity of Schistosomiasis Periportal Fibrosis in the Northeast of Brazil. Genet Test Mol Biomarkers 2017; 21:658-662. [PMID: 29087736 DOI: 10.1089/gtmb.2017.0133] [Citation(s) in RCA: 5] [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] [Indexed: 02/07/2023] Open
Abstract
AIMS The proinflammatory cytokine tumor necrosis factor-alpha (TNF-α) is an essential component in the host immune response to infection, and it has been reported to be an important mediator in severe periportal fibrosis (PPF). We hypothesized that the (-G308A) polymorphism of the TNF-α gene is associated with the severity of PPF and that these polymorphisms influence TNF-α expression. METHODS In this cross-sectional study, we genotyped these polymorphisms within the TNF-α gene in 256 Brazilian subjects infected with Schistosoma mansoni, with different patterns of PPF. RESULTS The genotype (-308) AA was associated with a significant increase in the risk to advanced PPF (OR = 4.60; p = 0.009). In addition, median levels of TNF-α were higher in patients with moderate to advanced PPF, compared with mild fibrosis (20 and 17.3 pg/mL, respectively; p = 0.040). There was no association between average serum levels of TNF-α and (-G308A) TNF-α polymorphism. CONCLUSIONS Our results suggest the (-308) AA genotype may be a risk factor for severity in advanced PPF, in this Brazilian population, and could potentially be used to predict the severity of advanced PPF in schistosomiasis.
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Affiliation(s)
- Paula Carolina Valença Silva
- 1 Departamento de Enfermagem, Universidade Federal de Pernambuco (UFPE) , Vitória de Santo Antão, Pernambuco, Brazil .,2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Adriana Vieira Gomes
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil .,3 Instituto de Ciências Biológicas, Universidade de Pernambuco (UPE) , Recife, Brazil
| | - Lidiane Régia Pereira Braga de Britto
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil .,4 Departamento de Fisioterapia, Universidade de Pernambuco (UPE) , Petrolina, Brazil
| | - Elker Lene Santos de Lima
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Jamile Luciana da Silva
- 1 Departamento de Enfermagem, Universidade Federal de Pernambuco (UFPE) , Vitória de Santo Antão, Pernambuco, Brazil
| | | | - Maria Tereza Cartaxo Muniz
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil .,3 Instituto de Ciências Biológicas, Universidade de Pernambuco (UPE) , Recife, Brazil
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da Silva Constantino T, de Lima ELS, de Brito LRPB, Silva JL, Coêlho MRCD, Muniz MTC, Silva PCV, Domingues ALC. Association Between Polymorphisms of the Mannose-Binding Lectin and Severity of Periportal Fibrosis in Schistosomiasis, in the Northeast of Brazil. Genet Test Mol Biomarkers 2017; 21:571-576. [PMID: 28783370 DOI: 10.1089/gtmb.2017.0051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS Mannose-binding lectin (MBL) is a protein synthesized by the liver and its immune response is associated with the development of liver fibrosis. We hypothesized that the polymorphisms in the Exon 1 region (52, 54, 57) and promoter regions (-550 H/L, -221 X/Y) of the MBL2 gene were associated with the severity of periportal fibrosis (PPF), and that these polymorphisms affect the MBL serum levels. MATERIALS AND METHODS In this cross-sectional study we genotyped these polymorphisms within the MBL2 gene in 229 Brazilian subjects infected with Schistosoma mansoni, with different patterns of PPF. RESULTS There was no association between the polymorphisms and haplotypes of the MBL2 gene and the advanced PPF pattern. The MBL levels were higher in individuals with advanced fibrosis. There was risk association among high-expression haplotypes of MBL, and a protection association between the A/O Exon 1 genotype and elevated MBL serum levels. CONCLUSIONS Our results suggest that polymorphism of Exon 1 and MBL haplotypes could potentially be used to predict the severity of advanced PPF in the Brazilian population.
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Affiliation(s)
- Taynan da Silva Constantino
- 1 Centro Acadêmico de Vitória, Universidade Federal de Pernambuco (UFPE) , Vitória de Santo Antão, Pernambuco, Brazil
| | - Elker Lene Santos de Lima
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
- 3 Instituto de Ciências Biológicas , Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Lidiane Régia Pereira Braga de Brito
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
| | - Jamile Luciana Silva
- 1 Centro Acadêmico de Vitória, Universidade Federal de Pernambuco (UFPE) , Vitória de Santo Antão, Pernambuco, Brazil
| | - Maria Rosângela Cunha Duarte Coêlho
- 4 Setor de Virologia do Laboratório de Imunopatologia Keizo-Asami (LIKA), Universidade Federal de Pernambuco (UFPE) , Recife, Pernambuco, Brazil
- 5 Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco (UFPE) , Recife, Pernambuco, Brazil
| | - Maria Tereza Cartaxo Muniz
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
- 3 Instituto de Ciências Biológicas , Universidade de Pernambuco, Recife, Pernambuco, Brazil
- 6 Faculdade de Ciências Médicas, Universidade de Pernambuco , Recife, Pernambuco, Brazil
| | - Paula Carolina Valença Silva
- 1 Centro Acadêmico de Vitória, Universidade Federal de Pernambuco (UFPE) , Vitória de Santo Antão, Pernambuco, Brazil
- 2 Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica, Hospital Universitário Oswaldo Cruz , Universidade de Pernambuco, Recife, Pernambuco, Brazil
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de Lima ELS, da Silva VC, da Silva HDA, Bezerra AM, de Morais VLL, de Morais AL, Cruz RV, Barros MHM, Hassan R, de Freitas AC, Muniz MTC. MTR polymorphic variant A2756G and retinoblastoma risk in Brazilian children. Pediatr Blood Cancer 2010; 54:904-8. [PMID: 20310006 DOI: 10.1002/pbc.22472] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Polymorphisms in the genes of folate and methionine metabolism enzymes have been associated with some forms of cancer by affecting DNA synthesis, repair, and methylation. PROCEDURE A case-control study of 72 retinoblastoma cases and 98 cancer-free children controls was performed to investigate whether the polymorphisms of the methylenetetrahydrofolate reductase (MTHFR C677T and A1298C), methionine synthase (MTR A2756G), carrier of reduced folate 1 (RFC-1 A80G) and thymidylate synthase (TYMS 2R > 3R) altered the risk for retinoblastoma. RESULTS MTR A2756G AG plus GG genotype frequencies were higher in patients than in controls (45% vs. 26%, P = 0.03). Individual carriers of the variant allele G had a 2.02 (95% CI: 1.05-3.92)-fold increased risk for retinoblastoma. In contrast, no association was observed with respect to MTHFR C677T and A1298C, RFC A80G, and TYMS polymorphisms. CONCLUSIONS This study presents evidence for an association between the MTR A2756G polymorphism and retinoblastoma susceptibility in a Northeast population from Brazil.
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Affiliation(s)
- Elker Lene Santos de Lima
- Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica (CEONHPE), Hospital Universitário Oswaldo Cruz, Universidade de Pernambuco, Recife, PE, Brazil
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