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Soler AM, Pedroso GA, Geraldo APM, Albuquerque DM, Costa FF, Santos MNN, Knijnenburg J, Harteveld CL, Sonati MF, da Luz JA. A novel α 0-thalassemia deletion in a Brazilian child with Hb H disease: -- Mococa. Int J Lab Hematol 2024. [PMID: 38566588 DOI: 10.1111/ijlh.14277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/07/2024] [Indexed: 04/04/2024]
Affiliation(s)
- A M Soler
- Laboratorio de Genética Molecular Humana, Departamento de Ciencias Biológicas, Centro Universitario Regional (CENUR) Litoral Norte. Universidad de la República (UdelaR), Salto, Uruguay
| | - G A Pedroso
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - A P M Geraldo
- Integrated Center for Oncohematological Research in Childhood (CIPOI), UNICAMP, Campinas, SP, Brazil
| | - D M Albuquerque
- Center for Hematology and Hemotherapy, UNICAMP, Campinas, SP, Brazil
| | - F F Costa
- Center for Hematology and Hemotherapy, UNICAMP, Campinas, SP, Brazil
| | - M N N Santos
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - J Knijnenburg
- Department of Human and Clinical Genetics, Hemoglobinopathy Expert Center, Leiden University Medical Center-LUMC, Leiden, The Netherlands
| | - C L Harteveld
- Department of Human and Clinical Genetics, Hemoglobinopathy Expert Center, Leiden University Medical Center-LUMC, Leiden, The Netherlands
| | - M F Sonati
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - J A da Luz
- Laboratorio de Genética Molecular Humana, Departamento de Ciencias Biológicas, Centro Universitario Regional (CENUR) Litoral Norte. Universidad de la República (UdelaR), Salto, Uruguay
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Sobreira MJ, Batista TH, Santana RM, Arcanjo GS, Jorge SE, Santos MN, Albuquerque DM, Hatzlhofer BL, Dos Anjos AC, Costa FF, Araujo AS, Sonati MF, Lucena-Araujo AR, Bezerra MA. Functional characterization of compound heterozygosity Hb S/Hb Deer Lodge in Brazil. Hematol Transfus Cell Ther 2023:S2531-1379(23)02594-4. [PMID: 38307823 DOI: 10.1016/j.htct.2023.09.2370] [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: 09/06/2022] [Revised: 05/30/2023] [Accepted: 09/18/2023] [Indexed: 02/04/2024] Open
Abstract
INTRODUCTION The Hb Deer Lodge (β2 His>Arg; HBB:c.8A>G) is a structural hemoglobin variant described in some populations around the world, characterized by increased oxygen affinity, but does not confer clinical symptoms to its carriers. The coinheritance of the Hb Deer Lodge with the most common hemoglobin variant, Hb S, has been reported only once; however, functional data were not described. Here we show a case of the Hb S and Hb Deer Lodge carrier in heterozygosity. METHODS The Hb S and Hb Deer Lodge association was identified by High-Performance Liquid Chromatography (HPLC), reverse phase HPLC and the β globin gene sequencing. The functional characterization of this interaction was obtained using the O2 dissociation curve, determination of the cooperativity between the globin chains and the Bohr effect in the presence and absence of organic phosphates. RESULTS When the Hb S and Hb Deer Lodge were associated, there was a decrease in cooperativity, no significant changes in oxygen affinity and no significant Bohr effect changes. CONCLUSION Despite these genetic variations, the carrier showed no hematological alterations and no clinical symptoms, possibly due to the high oxygen affinity of the Hb Deer Lodge, which interferes with the Hb S polymerization.
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Affiliation(s)
- Marcondes J Sobreira
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil
| | - Thais H Batista
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil
| | - Rodrigo M Santana
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil
| | - Gabriela S Arcanjo
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil
| | - Susan E Jorge
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Patologia Clínica, Campinas, SP, Brasil
| | - Magnun N Santos
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Patologia Clínica, Campinas, SP, Brasil
| | | | - Betânia L Hatzlhofer
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil; Universidade Federal de Pernambuco, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Recife, PE, Brasil
| | - Ana C Dos Anjos
- Fundação de Hematologia e Hemoterapia de Pernambuco, Departamento de Medicina Interna, Recife, PE, Brasil
| | - Fernando F Costa
- Universidade de Campinas, Centro de Hematologia e Hemoterapia, Campinas, SP, Brasil
| | - Aderson S Araujo
- Fundação de Hematologia e Hemoterapia de Pernambuco, Departamento de Medicina Interna, Recife, PE, Brasil
| | - Maria F Sonati
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Patologia Clínica, Campinas, SP, Brasil
| | - Antonio R Lucena-Araujo
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil
| | - Marcos A Bezerra
- Universidade Federal de Pernambuco, Programa de Pós-Graduação em Genética, Recife, PE, Brasil.
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Alagbe AE, Pedroso GA, Justo-Junior AS, Costa E, Oliveira BB, Maia GAF, Albuquerque DM, Módena JLP, Costa FF, Santos MNND. ALTERED PLASMA CYTOKINE CONCENTRATIONS ARE ASSOCIATED WITH THE CLINICAL SEVERITY OF PATIENTS WITH COVID-19. Hematol Transfus Cell Ther 2022. [PMCID: PMC9576008 DOI: 10.1016/j.htct.2022.09.1130] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction The novel Coronavirus (SARS-CoV-2), responsible for severe acute respiratory syndrome, has emerged as a threat to humans since December 2019, and the search for a better understanding of the pathophysiology of coronavirus disease 2019 (COVID-19) and its definitive treatment is still in progress. Objective To evaluate the plasma pro- and anti-inflammatory cytokines in COVID-19 patients and their associations with the disease severity and outcome. Methods Reverse-Transcriptase Polymerase Chain Reaction (RT-PCR)-confirmed COVID-19 unvaccinated patients at the Hospital de Clínicas (HC), UNICAMP, Campinas, SP, were enrolled. Clinical and laboratory data were extracted from the medical records, and the plasma cytokines levels were quantified using LUMINEX and ELISA. Results There were 154 COVID-19 patients (99 survivors and 55 non-survivors) with male:female of 1.4:1, and a median age of 60 years. The non-survivors were older than survivors (65 vs. 55 years, p < 0.0001); and coronary artery disease and autoimmunity, disease severity, and oxygen therapy, intensive care, and intubation were associated with mortality. Non-survivors had higher leukocyte and neutrophil counts, and RDW and lower lymphocyte count at diagnosis. Non-survivors had higher levels of pro-inflammatory (TNF-α, IL-6, IFN-γ, CCL3, IL-17/IL-17A, IL-8, G-CSF, CCL2/MCP-1) and anti-inflammatory (IL-1ra and IL-27) cytokines, but lower TGF-β levels than the survivors. TNF-α levels were positively correlated with all studied cytokines except TGF-β, while TGF-β levels were negatively correlated with TNF-α, IL-6, CCL3, G-CSF, and IL-27. IL-27 levels were significantly correlated with all the cytokines except IL-37 and IL-17E. More than half (55.2%) of our patients had severe COVID-19, 18.8% had moderate, 16.2% had critical, 5.2% had mild, and 4.5% were asymptomatic. Majority of the patients (68.2%) required ICU care and had higher TNF-α, IL-6, IL-8, IL-17, CCL3, CCL2, IL-1ra, and IL-27 than others. 59.7% of the patients required endotracheal intubation and had higher TNF-α, IL-6, IL-8, CCL3, CCL2, and IL-1ra than those who did not have intubation. TNF-α, IL-6, and IL-8 had the highest Area Under the Receiver Operating Characteristics (AUROC) curve, sensitivity, and specificity for predicting mortality in these COVID-19 patients. Discussion and conclusion The altered levels of pro- and anti-inflammatory cytokines support the role of SARS-CoV-2 in inducing cytokine storm, and higher concentrations seen in the deceased patients meant a more severe storm. Also, the increased leukocytes and neutrophils in our patients could have led to the release of reactive oxygen species, and end-organ damage, thus leading to poor outcomes. This study showed that the levels of these cytokines could be used as markers of mortality in COVID-19. It is possible to suggest that TNF, IL-6, and IL-8 levels at diagnosis could be efficient predictors of fatal outcomes in COVID-19 patients. If properly measured at diagnosis, these markers could be useful for triaging and predicting the outcome of COVID-19, thus guiding the treatment of the COVID-19. Funding CNPq (#190374/2017-9), CAPES, FAPESP and FAEPEX (#338619).
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Affiliation(s)
- AE Alagbe
- Departamento de Patologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - GA Pedroso
- Departamento de Patologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - AS Justo-Junior
- Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Laboratório Nacional de Biociências (LNBio), Campinas, SP, Brazil
| | - E Costa
- Laboratório de Hematologia e Hemoterapia, Divisão de Patologia Clínica, Hospital das Clínicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - BB Oliveira
- Laboratório de Hematologia e Hemoterapia, Divisão de Patologia Clínica, Hospital das Clínicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - GAF Maia
- Laboratório de Hematologia e Hemoterapia, Divisão de Patologia Clínica, Hospital das Clínicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - DM Albuquerque
- Centro de Hematologia e Hemoterapia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - JLP Módena
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - FF Costa
- Centro de Hematologia e Hemoterapia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - MNND Santos
- Departamento de Patologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
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Piellusch BF, Rodriguez-Osorio N, Albuquerque DM, Domingos IF, Pereira-Martins DA, Araújo AS, Bezerra MAC, Costa FF, Sonati MF, Santos MNND. PERFIL DE EXPRESSÃO DE MICRORNAS E DO FATOR DE CRESCIMENTO ENDOTELIAL VASCULAR A EM PACIENTES COM ANEMIA FALCIFORME COM E SEM ÚLCERA DE PERNA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.067] [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: 11/11/2022] Open
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Borges MD, Albuquerque DM, Lanaro C, Pagnano KBB, Costa RS, Costa FF. MONÓCITOS E HEMÁCIAS DE PACIENTES COM POLICITEMIA VERA CONTRIBUEM PARA AUMENTO DA ERITROFAGOCITOSE E DA EXPRESSÃO DE MOLÉCULAS ENVOLVIDAS COM O METABOLISMO DO FERRO. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.395] [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: 11/05/2022] Open
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Oliveira MA, Albuquerque DM, Lanaro C, Costa FF. ASPECTOS PRÉ-CLÍNICOS DE EDIÇÃO GÊNICA PARA O TRATAMENTO DAS DOENÇAS FALCIFORMES NO BRASIL. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.071] [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: 11/11/2022] Open
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Borges MD, Costa RS, Albuquerque DM, Lanaro C, Fertrin KY, Costa FF. MONÓCITOS DE PACIENTES COM POLICITEMIA VERA ESTÃO ENVOLVIDOS NA ERITROFAGOCITOSE. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.236] [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: 10/20/2022] Open
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Albuquerque FP, Sousa IG, Souza BB, Maués JHS, Lanaro C, Albuquerque DM, Costa FF. MECANISMOS MOLECULARES ENVOLVIDOS NO AUMENTO DA EXPRESSÃO DE HBF IN VITRO EM UMA SUBPOPULAÇÃO DE CÉLULAS CD34+ DE PACIENTES COM β-TALASSEMIA MAIOR. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.041] [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: 11/26/2022] Open
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Batista JVGF, Arcanjo GS, Batista THC, Sobreira MJ, Santana RM, Domingos IF, Hatzlhofer BL, Falcão DA, Pereira-Martins DA, Oliveira JM, Araujo AS, Laranjeira LPM, Medeiros FS, Albuquerque FP, Albuquerque DM, Santos MN, Hazin MF, Dos Anjos AC, Costa FF, Araujo AS, Lucena-Araujo AR, Bezerra MA. Influence of UGT1A1 promoter polymorphism, α-thalassemia and β s haplotype in bilirubin levels and cholelithiasis in a large sickle cell anemia cohort. Ann Hematol 2021; 100:903-911. [PMID: 33523291 DOI: 10.1007/s00277-021-04422-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 01/11/2021] [Indexed: 11/29/2022]
Abstract
Hyperbilirubinemia in patients with sickle cell anemia (SCA) as a result of enhanced erythrocyte destruction, lead to cholelithiasis development in a subset of patients. Evidence suggests that hyperbilirubinemia may be related to genetic variations, such as the UGT1A1 gene promoter polymorphism, which causes Gilbert syndrome (GS). Here, we aimed to determine the frequencies of UGT1A1 promoter alleles, alpha thalassemia, and βS haplotypes and analyze their association with cholelithiasis and bilirubin levels. The UGT1A1 alleles, -3.7 kb alpha thalassemia deletion and βS haplotypes were determined using DNA sequencing and PCR-based assays in 913 patients with SCA. The mean of total and unconjugated bilirubin and the frequency of cholelithiasis in GS patients were higher when compared to those without this condition, regardless of age (P < 0.05). Cumulative analysis demonstrated an early age-at-onset for cholelithiasis in GS genotypes (P < 0.05). Low fetal hemoglobin (HbF) levels and normal alpha thalassemia genotype were related to cholelithiasis development (P > 0.05). However, not cholelithiasis but total and unconjugated bilirubin levels were associated with βS haplotype. These findings confirm in a large cohort that the UGT1A1 polymorphism influences cholelithiasis and hyperbilirubinemia in SCA. HbF and alpha thalassemia also appear as modulators for cholelithiasis risk.
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Affiliation(s)
| | - Gabriela S Arcanjo
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Thais H C Batista
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | | | - Rodrigo M Santana
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Igor F Domingos
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.,Department of Clinical and Toxicological Analyses, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Betânia L Hatzlhofer
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.,Department of Pharmaceutical Sciences, Health Sciences Centre, Federal University of Pernambuco, Recife, Brazil
| | - Diego A Falcão
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Diego A Pereira-Martins
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Jéssica M Oliveira
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Amanda S Araujo
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | | | | | | | | | - Magnun N Santos
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Manuela F Hazin
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | - Ana C Dos Anjos
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | - Fernando F Costa
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Aderson S Araujo
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | | | - Marcos A Bezerra
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.
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Chenou F, Albuquerque DM, Leonardo DP, Domingos IF, Bezerra MAC, Araújo AS, Blotta MHSL, Costa FF, Sonati MF, Paula EV, Santos MNN. Endothelial Nitric Oxide Synthase (eNOS) Gene Polymorphisms and Markers of Hemolysis, Inflammation and Endothelial Dysfunction in Brazilian Sickle Cell Anemia Patients. Biochem Genet 2020; 58:580-594. [PMID: 32277314 DOI: 10.1007/s10528-020-09959-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/29/2019] [Accepted: 03/13/2020] [Indexed: 11/30/2022]
Abstract
The impaired bioavailability of endogenous nitric oxide (NO) in sickle cell anemia (SCA) may be influenced by polymorphisms in the endothelial nitric oxide synthase gene (eNOS). We compared allelic/genotypic frequencies of the eNOS polymorphisms T-786C, VNTR4a/b and G894T between 89 adult SCA patients and 100 healthy controls, and investigated the relationship between these SNPs and markers of hemolysis [lactate dehydrogenase (LDH), indirect bilirubin (IB) and reticulocyte counts], inflammation [interleukins IL-1β, IL-6, IL-8, Tumor Necrosis Factor (TNF-α) and C-reactive protein (CRP)] and endothelial dysfunction (ED) [soluble vascular cell adhesion molecule-1 (sVCAM-1), soluble intercellular adhesion molecule-1 (sICAM-1), soluble L-selectin (sL-selectin), von Willebrand Factor (vWF) antigen and D-dimers] in the patients. The frequencies of the mutant -786C allele and -786C/C genotype were significantly higher in patients (p = 0.02 and p = 0.04, respectively) but not significantly correlated with the markers. For VNTR4a/b and G894T, the allelic/genotypic frequencies did not statistically differ between patient and control groups. Patients carrying the 4a allele and those with the 894G/G genotype showed a significant decrease in IB (p = 0.02 and p = 0.04, respectively), and only patients with the 4a allele exhibited reduced IL-1β (p = 0.01). The correlation profiles between markers of inflammation and ED significantly differed between patients carrying the mutant alleles and those with wild-type genotypes. This appears to be the first report on the relationship between eNOS gene polymorphisms and markers of hemolysis, inflammation and ED in Brazilian SCA patients. Our results indicate that the SNPs analyzed may influence the phenotypic variability of these patients.
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Affiliation(s)
- F Chenou
- Department of Clinical Pathology - School of Medical Sciences, State University of Campinas (UNICAMP), Rua Vital Brasil 50, Campinas, SP, 13083-888, Brazil
| | - D M Albuquerque
- Hematology and Hemotherapy Center, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - D P Leonardo
- Hematology and Hemotherapy Center, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - I F Domingos
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - M A C Bezerra
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - A S Araújo
- Hematology and Hemotherapy Foundation of Pernambuco (HEMOPE), Recife, Pernambuco, Brazil
| | - M H S L Blotta
- Department of Clinical Pathology - School of Medical Sciences, State University of Campinas (UNICAMP), Rua Vital Brasil 50, Campinas, SP, 13083-888, Brazil
| | - F F Costa
- Hematology and Hemotherapy Center, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - M F Sonati
- Department of Clinical Pathology - School of Medical Sciences, State University of Campinas (UNICAMP), Rua Vital Brasil 50, Campinas, SP, 13083-888, Brazil
| | - E V Paula
- Hematology and Hemotherapy Center, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - M N N Santos
- Department of Clinical Pathology - School of Medical Sciences, State University of Campinas (UNICAMP), Rua Vital Brasil 50, Campinas, SP, 13083-888, Brazil.
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Ito MT, da Silva Costa SM, Baptista LC, Carvalho-Siqueira GQ, Albuquerque DM, Rios VM, Ospina-Prieto S, Saez RC, Vieira KP, Cendes F, Ozelo MC, Saad STO, Costa FF, Melo MB. Angiogenesis-Related Genes in Endothelial Progenitor Cells May Be Involved in Sickle Cell Stroke. J Am Heart Assoc 2020; 9:e014143. [PMID: 32009522 PMCID: PMC7033889 DOI: 10.1161/jaha.119.014143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background The clinical aspects of sickle cell anemia (SCA) are heterogeneous, and different patients may present significantly different clinical evolutions. Almost all organs can be affected, particularly the central nervous system. Transient ischemic events, infarcts, and cerebral hemorrhage can be observed and affect ≈25% of the patients with SCA. Differences in the expression of molecules produced by endothelial cells may be associated with the clinical heterogeneity of patients affected by vascular diseases. In this study, we investigated the differential expression of genes involved in endothelial cell biology in SCA patients with and without stroke. Methods and Results Endothelial progenitor cells from 4 SCA patients with stroke and 6 SCA patients without stroke were evaluated through the polymerase chain reaction array technique. The analysis of gene expression profiling identified 29 differentially expressed genes. Eleven of these genes were upregulated, and most were associated with angiogenesis (55%), inflammatory response (18%), and coagulation (18%) pathways. Downregulated expression was observed in 18 genes, with the majority associated with angiogenesis (28%), apoptosis (28%), and cell adhesion (22%) pathways. Remarkable overexpression of the MMP1 (matrix metalloproteinase 1) gene in the endothelial progenitor cells of all SCA patients with stroke (fold change: 204.64; P=0.0004) was observed. Conclusions Our results strongly suggest that angiogenesis is an important process in sickle cell stroke, and differences in the gene expression profile of endothelial cell biology, especially MMP1, may be related to stroke in SCA patients.
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Affiliation(s)
- Mirta T Ito
- Center for Molecular Biology and Genetic Engineering University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Sueli M da Silva Costa
- Center for Molecular Biology and Genetic Engineering University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Letícia C Baptista
- Center for Molecular Biology and Genetic Engineering University of Campinas-UNICAMP Campinas São Paulo Brazil
| | | | | | - Vinicius M Rios
- Center for Molecular Biology and Genetic Engineering University of Campinas-UNICAMP Campinas São Paulo Brazil
| | | | - Roberta C Saez
- Hematology and Hemotherapy Center University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Karla P Vieira
- Hematology and Hemotherapy Center University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Fernando Cendes
- Neuroimaging Laboratory Department of Neurology University of Campinas, UNICAMP Campinas São Paulo Brazil
| | - Margareth C Ozelo
- Hematology and Hemotherapy Center University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Sara Teresinha O Saad
- Hematology and Hemotherapy Center University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Fernando F Costa
- Hematology and Hemotherapy Center University of Campinas-UNICAMP Campinas São Paulo Brazil
| | - Mônica B Melo
- Center for Molecular Biology and Genetic Engineering University of Campinas-UNICAMP Campinas São Paulo Brazil
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Pedroso GA, Kimura EM, Santos MNN, Albuquerque DM, Malimpensa D, Jorge SE, Verissimo MPA, Costa FF, Sonati MF. Thalassemia major phenotype caused by HB Zürich-Albisrieden [α2 59(E8) Gly > Arg (HBA2:C.178G > C)] in a Brazilian child. Pediatr Blood Cancer 2018; 65:e27413. [PMID: 30151892 DOI: 10.1002/pbc.27413] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/10/2022]
Abstract
Hemoglobin (Hb) Zürich-Albisrieden (ZA) [α2 59(E8) Gly > Arg; HBA2:c.178G > C] is a rare and highly unstable α-chain variant. A few simple and compound heterozygotes (αZA α/αα and -/αZA α, respectively) have been described so far in Switzerland and China. We describe here a case of homozygosity for the Hb ZA mutation (αZA α/αZA α) in a Brazilian child with severe congenital hemolytic anemia and ineffective erythropoiesis.
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Affiliation(s)
- Gisele A Pedroso
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Elza M Kimura
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Magnun N N Santos
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Dulcinéia M Albuquerque
- Hematology and Hemotherapy Center, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Danaê Malimpensa
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Susan E Jorge
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | | | - Fernando F Costa
- Hematology and Hemotherapy Center, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Maria F Sonati
- Hemoglobinopathies Laboratory, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
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Olatunya OS, Albuquerque DM, Adekile AD, Costa FF. Evaluation of sociodemographic, clinical, and laboratory markers of sickle leg ulcers among young nigerians at a tertiary health institution. Niger J Clin Pract 2018; 21:882-887. [PMID: 29984720 DOI: 10.4103/njcp.njcp_4_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Sickle leg ulcer (SLU) is a chronic and debilitating complication of sickle cell disease (SCD) associated with huge physical and psychosocial discomfort. The occurrence of SLU has remained steady despite successful preventive strategies and advances in SCD care. Although multifactorial factors have been implicated in SLU, these are not fully understood, and data on how these relate to young Nigerian SCD patients are scanty. Aims This study aims to evaluate the sociodemographic, clinical, and laboratory markers of SLU in a young Nigerian SCD cohort. Patients and Methods This study involved 109 young SCD patients and 67 healthy peers. The sociodemographic and laboratory parameters of the participants were examined in addition to the evaluation of the SCD cohort for SLU. Results Only the HbSS patients had SLU. This was found in six of them giving a prevalence of 5.9% (6/101). Their median age was 17, range 14-21 years. There was a preceding history of trauma in 4 (66.7%), and this included a case of traditional scarifications for local therapeutic purposes. Two of the three (66.7%) males with SLU also had priapism (P = 0.0132). Patients with SLU were older, had less frequent bone pain crises, and significantly belonged to the low socioeconomic class (P < 0.05). Although patients with SLU had relatively higher lactate dehydrogenase, platelet count, aspartate transaminase, bilirubin, white blood cell, and lower Hb concentration and HbF, these did not attain statistical significance (P > 0.05). Conclusion This study confirms that SLU is common among young SCD patients with HbSS genotype, low socioeconomic background, and older age. It also suggests that SLU could be more related to hemolysis-associated SCD phenotypes among the patients.
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Affiliation(s)
- O S Olatunya
- Hematology and Hemotherapy Center, University of Campinas, São Paulo, Brazil; Department of Paediatrics, College of Medicine, Ekiti State University, Ekiti State, Nigeria
| | - D M Albuquerque
- Hematology and Hemotherapy Center, University of Campinas, São Paulo, Brazil
| | - A D Adekile
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - F F Costa
- Hematology and Hemotherapy Center, University of Campinas, São Paulo, Brazil
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Mota NO, Kimura EM, Ferreira RD, Pedroso GA, Albuquerque DM, Ribeiro DM, Santos MNN, Bittar CM, Costa FF, Sonati MDF. Rare α0-thalassemia deletions detected by MLPA in five unrelated Brazilian patients. Genet Mol Biol 2017; 40:768-773. [PMID: 28981562 PMCID: PMC5738609 DOI: 10.1590/1678-4685-gmb-2016-0330] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 07/23/2017] [Indexed: 11/21/2022] Open
Abstract
Alpha-thalassemias are among the most common genetic diseases in the world. They are characterized by hypochromic and microcytic anemia and great clinical variability, ranging from a practically asymptomatic phenotype to severe anemia, which can lead to intrauterine or early neonatal death. Deletions affecting the α-globin genes, located on chromosome 16p13.3, are the main causes of α-thalassemia. Multiplex ligation-dependent probe amplification (MLPA) can be used to detect rearrangements that cause α-thalassemia, particularly large deletions involving the whole α cluster and/or deletions in the HS-40 region. Here, MLPA was used to investigate the molecular basis of α-thalassemia in five unrelated patients, three of whom had Hb H disease. In addition to the -α3.7 deletion identified in the patients with Hb H disease, four different α0 deletions removing 15 to 225 kb DNA segments were found: two of them remove both the α genes, one affects only the regulatory element (HS-40) region, and another one extends over the entire α cluster and the HS-40 region. These results illustrate the diversity of α-thalassemia deletions in the Brazilian population and highlight the importance of molecular investigation in cases that present with microcytosis and hypochromia without iron deficiency and normal or reduced Hb A2 levels..
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Affiliation(s)
- Natália O Mota
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Elza M Kimura
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Roberta D Ferreira
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Gisele A Pedroso
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Daniela M Ribeiro
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Magnun N N Santos
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Fernando F Costa
- Hemocentro, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Maria de Fatima Sonati
- Laboratório de Hemoglobinopatias, Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
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Pedroso GA, Kimura EM, Santos MNN, Albuquerque DM, Ferruzzi JLH, Jorge SE, Costa FF, Saad STO, Sonati MF. Coinheritance of Hb Bristol-Alesha [β67(E11)Val→Met; HBB: c.202G>A] and the α212 Patchwork Allele in a Brazilian Child with Severe Congenital Hemolytic Anemia. Hemoglobin 2017; 41:203-208. [PMID: 28670945 DOI: 10.1080/03630269.2017.1340305] [Citation(s) in RCA: 3] [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] [Indexed: 10/19/2022]
Abstract
Hb Bristol-Alesha [HBB: c.202G>A; β 67 Val>Met] is a rare structural variant of hemoglobin (Hb) resulting from a GTG>ATG substitution at codon 67 of the β-globin gene that leads to the replacement of valine by methionine in the corresponding position of the β-globin chain. The methionine residue is subsequently modified to aspartic acid [β67(E11)Val-Met→Asp], possibly by autoxidation mechanisms. This substitution prevents normal non-polar binding of Val67 to the heme group, resulting in molecular instability and severe hemolysis. We identified Hb Bristol-Alesha (in the heterozygous state), as the cause of severe congenital hemolytic anemia in an 11-month-old girl of mixed (native Indian and European) ethnic origin from the Midwestern region of Brazil, whose parents were clinically and hematologically normal. The mutation on the β-globin gene was found to have been coinherited with the α212 patchwork allele.
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Affiliation(s)
- Gisele A Pedroso
- a Hemoglobinopathies Laboratory, Department of Clinical Pathology , School of Medical Sciences, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Elza M Kimura
- a Hemoglobinopathies Laboratory, Department of Clinical Pathology , School of Medical Sciences, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Magnun N N Santos
- a Hemoglobinopathies Laboratory, Department of Clinical Pathology , School of Medical Sciences, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Dulcinéia M Albuquerque
- b Hematology and Hemotherapy Center, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Jucilane L H Ferruzzi
- c University Hospital, Federal University of Grande Dourados (UFGD), Dourados , Mato Grosso do Sul , Brazil
| | - Susan E Jorge
- a Hemoglobinopathies Laboratory, Department of Clinical Pathology , School of Medical Sciences, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Fernando F Costa
- b Hematology and Hemotherapy Center, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Sara T O Saad
- b Hematology and Hemotherapy Center, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
| | - Maria F Sonati
- a Hemoglobinopathies Laboratory, Department of Clinical Pathology , School of Medical Sciences, State University of Campinas (UNICAMP), Campinas , São Paulo , Brazil
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Fornari TA, Lanaro C, Albuquerque DM, Ferreira R, Costa FF. Featured Article: Modulation of fetal hemoglobin in hereditary persistence of fetal hemoglobin deletion type-2, compared to Sicilian δβ-thalassemia, by BCL11A and SOX6-targeting microRNAs. Exp Biol Med (Maywood) 2016; 242:267-274. [PMID: 27591578 DOI: 10.1177/1535370216668052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 01/06/2023] Open
Abstract
Hereditary persistence of fetal hemoglobin deletion type-2 (HPFH-2) and Sicilian-δβ-thalassemia are conditions described as large deletions of the human β-like globin cluster, with absent β-globin chains and a compensatory variable increase in γ-globin. HPFH, in general, may be distinguished from DB-Thalassemia by higher fetal hemoglobin (HbF) levels, absence of anemia and hypochromic and microcytic erythrocytes. MicroRNAs (miRNAs) regulate a range of cellular processes including erythropoiesis and regulation of transcription factors such as the BCL11A and SOX6 genes, which are related to the regulation of γ-globin expression. In this report, a possible association among the overexpression of miRNAs and the expression of the γ-globin gene was analyzed in these two conditions. Forty-nine differentially expressed miRNAs were identified by microarrays in CD34+-derived erythroid cells of two subjects heterozygous for Sicilian-δβ-thalassemia, 2 for HPFH-2 and 3 for controls after 13 days of culture. Some of these miRNAs may participate in γ-globin gene regulation and red blood cell function. The BCL11A gene was found to be potentially targeted by 12 miRNAs that were up-regulated in HPFH-2 or in DB-Thal. A down-regulation of BCL11A gene expression in HPFH-2 was verified by quantitative polymerase chain reaction. These data suggest an important action for miRNA that may partially explain the phenotypic differences between HPFH-2 and Sicilian δβ-thalassemia and the increased expression of γ-globin in these conditions.
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Affiliation(s)
- Thais A Fornari
- Hemocentro-UNICAMP - SP, Brazil, São Paulo 13083-878, Brazil
| | - Carolina Lanaro
- Hemocentro-UNICAMP - SP, Brazil, São Paulo 13083-878, Brazil
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Leonardo DP, Albuquerque DM, Lanaro C, Baptista LC, Cecatti JG, Surita FG, Parpinelli MA, Costa FF, Franco-Penteado CF, Fertrin KY, Costa ML. Association of Nitric Oxide Synthase and Matrix Metalloprotease Single Nucleotide Polymorphisms with Preeclampsia and Its Complications. PLoS One 2015; 10:e0136693. [PMID: 26317342 PMCID: PMC4552660 DOI: 10.1371/journal.pone.0136693] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Accepted: 08/06/2015] [Indexed: 12/22/2022] Open
Abstract
Background Preeclampsia is one of the leading causes of maternal and neonatal morbidity and mortality in the world, but its appearance is still unpredictable and its pathophysiology has not been entirely elucidated. Genetic studies have associated single nucleotide polymorphisms in genes encoding nitric oxide synthase and matrix metalloproteases with preeclampsia, but the results are largely inconclusive across different populations. Objectives To investigate the association of single nucleotide polymorphisms (SNPs) in NOS3 (G894T, T-786C, and a variable number of tandem repetitions VNTR in intron 4), MMP2 (C-1306T), and MMP9 (C-1562T) genes with preeclampsia in patients from Southeastern Brazil. Methods This prospective case-control study enrolled 77 women with preeclampsia and 266 control pregnant women. Clinical data were collected to assess risk factors and the presence of severe complications, such as eclampsia and HELLP (hemolysis, elevated liver enzymes, and low platelets) syndrome. Results We found a significant association between the single nucleotide polymorphism NOS3 T-786C and preeclampsia, independently from age, height, weight, or the other SNPs studied, and no association was found with the other polymorphisms. Age and history of preeclampsia were also identified as risk factors. The presence of at least one polymorphic allele for NOS3 T-786C was also associated with the occurrence of eclampsia or HELLP syndrome among preeclamptic women. Conclusions Our data support that the NOS3 T-786C SNP is associated with preeclampsia and the severity of its complications.
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Affiliation(s)
- Daniela P. Leonardo
- Hematology and Hemotherapy Center, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | | | - Carolina Lanaro
- Hematology and Hemotherapy Center, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | - Letícia C. Baptista
- Hematology and Hemotherapy Center, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | - José G. Cecatti
- Department of Obstetrics and Gynaecology, School of Medicine, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | - Fernanda G. Surita
- Department of Obstetrics and Gynaecology, School of Medicine, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | - Mary A. Parpinelli
- Department of Obstetrics and Gynaecology, School of Medicine, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | - Fernando F. Costa
- Hematology and Hemotherapy Center, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
| | | | - Kleber Y. Fertrin
- Hematology and Hemotherapy Center, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
- Department of Clinical Pathology, School of Medicine, University of Campinas–UNICAMP, Campinas, São Paulo, Brazil
- * E-mail:
| | - Maria Laura Costa
- Department of Obstetrics and Gynaecology, School of Medicine, University of Campinas—UNICAMP, Campinas, São Paulo, Brazil
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dos Santos AF, Almeida CB, Brugnerotto AF, Roversi FM, Pallis FR, Franco-Penteado CF, Lanaro C, Albuquerque DM, Leonardo FC, Costa FF, Conran N. Reduced plasma angiotensin II levels are reversed by hydroxyurea treatment in mice with sickle cell disease. Life Sci 2014; 117:7-12. [PMID: 25219880 DOI: 10.1016/j.lfs.2014.08.021] [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] [Received: 07/03/2014] [Revised: 08/20/2014] [Accepted: 08/26/2014] [Indexed: 01/01/2023]
Abstract
AIMS Sickle cell disease (SCD) pathogenesis leads to recurrent vaso-occlusive and hemolytic processes, causing numerous clinical complications including renal damage. As vasoconstrictive mechanisms may be enhanced in SCD, due to endothelial dysfunction and vasoactive protein production, we aimed to determine whether the expression of proteins of the renin-angiotensin system (RAS) may be altered in an animal model of SCD. MAIN METHODS Plasma angiotensin II (Ang II) was measured in C57BL/6 (WT) mice and mice with SCD by ELISA, while quantitative PCR was used to compare the expressions of the genes encoding the angiotensin-II-receptors 1 and 2 (AT1R and AT2R) and the angiotensin-converting enzymes (ACE1 and ACE2) in the kidneys, hearts, livers and brains of mice. The effects of hydroxyurea (HU; 50-75mg/kg/day, 4weeks) treatment on these parameters were also determined. KEY FINDINGS Plasma Ang II was significantly diminished in SCD mice, compared with WT mice, in association with decreased AT1R and ACE1 expressions in SCD mice kidneys. Treatment of SCD mice with HU reduced leukocyte and platelet counts and increased plasma Ang II to levels similar to those of WT mice. HU also increased AT1R and ACE2 gene expression in the kidney and heart. SIGNIFICANCE Results indicate an imbalanced RAS in an SCD mouse model; HU therapy may be able to restore some RAS parameters in these mice. Further investigations regarding Ang II production and the RAS in human SCD may be warranted, as such changes may reflect or contribute to renal damage and alterations in blood pressure.
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Affiliation(s)
- Alisson F dos Santos
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Camila B Almeida
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Ana F Brugnerotto
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Fernanda M Roversi
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Flávia R Pallis
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Carla F Franco-Penteado
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Carolina Lanaro
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Dulcinéia M Albuquerque
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Flávia C Leonardo
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Fernando F Costa
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil
| | - Nicola Conran
- INCT de Sangue, Hematology and Hemotherapy Center, School of Medicine, University of Campinas -UNICAMP, Campinas, Sao Paulo, Brazil.
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Malagrino PA, Sponton CHG, Esposti RD, Franco-Penteado CF, Fernandes RA, Bezerra MAC, Albuquerque DM, Rodovalho CM, Bacci M, Zanesco A. [Prevalence of dyslipidemia in middle-aged adults with NOS3 gene polymorphism and low cardiorespiratory fitness]. ACTA ACUST UNITED AC 2013; 57:33-43. [PMID: 23440097 DOI: 10.1590/s0004-27302013000100005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 12/14/2012] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To evaluate the influence of the interaction between endothelial nitric oxide synthase gene (NOS3) polymorphisms at positions -786T>C, Glu298Asp and intron 4b/a, and cardiorespiratory fitness on plasma nitrite/nitrate levels, blood pressure, lipid profile, and prevalence of cardiometabolic disorders. SUBJECTS AND METHODS Ninety-two volunteers were genotyped for NOS3 polymorphisms at positions (-786T>C and Glu298Asp) and (intron 4b/a) and divided according to the genotype: non-polymorphic (NP) and polymorphic (P). After that, they were subdivided according to the cardiorespiratory fitness associated with genotype: high (HNP and HP) and low (LNP and LP). RESULTS The subjects with polymorphism for the interactions at positions Glu298Asp + intron 4b/a, and Glu298Asp+-786T>C showed the highest values in total cholesterol, as well as dyslipidemia. CONCLUSION Our findings show that NOS3 gene polymorphisms at positions -786T>C, Glu298Asp, and intron 4b/a exert negative effects on the lipid profile compared with those who do not carry polymorphisms.
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Affiliation(s)
- Pamella A Malagrino
- Laboratório de Fisiologia Cardiovascular e Atividade Física, Instituto de Biociências, Universidade Estadual Paulista (Unesp), Rio Claro, SP, Brasil
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Godoy-Santos AL, Albuquerque DM, Diniz-Fernandes T, Rammelt S. Fracture of the talar neck associated with a compression fracture of the calcaneocuboid joint in a 5-year-old child: a case report. Arch Orthop Trauma Surg 2013; 133:1267-71. [PMID: 23784318 DOI: 10.1007/s00402-013-1791-9] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVE The objectives of this present case study are to report a rare combination of a displaced talar neck fracture with a compression fracture of the calcaneocuboid joint in a 5-year-old child and to describe its radiological features, surgical treatment and clinical outcome. A 5-year-old male boy was injured in a car accident in which his left foot underwent one of the tires. On arrival at the hospital, a displaced talar neck fracture associated both with a cuboid fracture and compression of the articular surface of the cuboid at the calcaneocuboid join was identified. Fractures were fixed surgically. Leg was protected with a below-knee plaster split immobilization and non-weight-bearing for 5 weeks. After that period, the patient initiated a rehabilitation protocol with active and passive motion exercises. DISCUSSION Fractures and fracture dislocations at the mid-tarsal joint have an important impact on the global foot function because malunion can result in post-traumatic arthritis and three-dimensional deformities of the foot. If a cuboid compression fracture is not reduced properly, it can result in the shortening of the lateral column with the development of an abduction, pronation and flat foot deformity. A talar neck fracture, if unreduced, can result in medial column displacement and rotational dislocation of the talar head, leading to a subluxation in the talonavicular joint with severe restriction of foot function. With early surgical treatment and open reduction and internal fixation, our patient recovered from the accident without having symptoms of pain, avascular necrosis, postoperative foot deformities or neurovascular deficits. CONCLUSIONS The combination of a displaced talar neck fracture with a compression fracture of the calcaneocuboid joint in children usually requires correct diagnoses and early treatment with anatomic reduction and internal fixation to prevent severe post-traumatic deformities. LEVEL OF EVIDENCE V.
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Affiliation(s)
- A L Godoy-Santos
- Department of Orthopedic Surgery, University of São Paulo, Rua Ovídio Pires de Campos 333, Cerqueira Cesar, São Paulo, SP, Brazil.
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D. Hatzlhofer BL, Bezerra MAC, Santos MN, Albuquerque DM, Freitas EM, Costa FF, Araújo AS, Muniz MTC. MTHFRPolymorphic Variant C677T Is Associated to Vascular Complications in Sickle-Cell Disease. Genet Test Mol Biomarkers 2012; 16:1038-43. [DOI: 10.1089/gtmb.2011.0361] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Betânia L. D. Hatzlhofer
- Centro de Hematologia e Hemoterapia de Pernambuco—HEMOPE, Recife, Pernambuco, Brasil
- Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Pernambuco, Brasil
| | - Marcos André C. Bezerra
- Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife, Pernambuco, Brasil
| | - Magnun N.N. Santos
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas-UNICAMP, Campinas, São Paulo, Brasil
| | - Dulcinéia M. Albuquerque
- Hospital de Hematologia e Hemoterapia, Universidade Estadual de Campinas-UNICAMP, Campinas, São Paulo, Brasil
| | - Elizabete M. Freitas
- Instituto de Ciências Biológicas-ICB, Universidade de Pernambuco-UPE, Recife, Pernambuco, Brasil
| | - Fernando F. Costa
- Hospital de Hematologia e Hemoterapia, Universidade Estadual de Campinas-UNICAMP, Campinas, São Paulo, Brasil
| | - Aderson S. Araújo
- Centro de Hematologia e Hemoterapia de Pernambuco—HEMOPE, Recife, Pernambuco, Brasil
| | - Maria Tereza C. Muniz
- Instituto de Ciências Biológicas-ICB, Universidade de Pernambuco-UPE, Recife, Pernambuco, Brasil
- Centro de Oncohematologia Pediátrica-CEONHPE/UPE, Hospital Universitário Oswaldo Cruz, Recife, Pernambuco, Brasil
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Da Luz J, López P, Kimura EM, Albuquerque DM, Costa FF, Sans M, Sonati MF. A new β⁰-thalassemia frameshift mutation [β 48 (-T)] in a Uruguayan family. Int J Lab Hematol 2012; 35:111-4. [PMID: 22898041 DOI: 10.1111/j.1751-553x.2012.01462.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 06/21/2012] [Indexed: 11/29/2022]
Abstract
We describe here a new frameshift mutation of β-thalassemia in a Uruguayan family with Italian ancestry [β48 (-T); HBB:c.146delT]. This frameshift results in formation of premature stop codon (TGA) 40 bp downstream and in a short unstable product that is degraded in the cell.
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Affiliation(s)
- J Da Luz
- Departamento de Genética, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
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Esposti RD, Sponton CHG, Malagrino PA, Carvalho FC, Peres E, Puga GM, Novais IP, Albuquerque DM, Rodovalho C, Bacci M, Zanesco A. Influence of eNOS gene polymorphism on cardiometabolic parameters in response to physical training in postmenopausal women. Braz J Med Biol Res 2011; 44:855-63. [PMID: 21956531 DOI: 10.1590/s0100-879x2011007500106] [Citation(s) in RCA: 11] [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] [Received: 02/14/2011] [Accepted: 08/01/2011] [Indexed: 11/22/2022] Open
Abstract
The health-promoting effects of exercise training (ET) are related to nitric oxide (NO) production and/or its bioavailability. The objective of this study was to determine whether single nucleotide polymorphism of the endothelial NO synthase (eNOS) gene at positions -786T>C, G894T (Glu298Asp) and at the variable number of tandem repeat (VNTR) Intron 4b/a would interfere with the cardiometabolic responses of postmenopausal women submitted to physical training. Forty-nine postmenopausal women were trained in sessions of 30-40 min, 3 days a week for 8 weeks. Genotypes, oxidative stress status and cardiometabolic parameters were then evaluated in a double-blind design. Both systolic and diastolic blood pressure values were significantly reduced after ET, which was genotype-independent. However, women without eNOS gene polymorphism at position -786T>C (TT genotype) and Intron 4b/a (bb genotype) presented a better reduction of total cholesterol levels (-786T>C: before = 213 ± 12.1, after = 159.8 ± 14.4, Δ = -24.9% and Intron 4b/a: before = 211.8 ± 7.4, after = 180.12 ± 6.4 mg/dL, Δ = -15%), and LDL cholesterol (-786T>C: before = 146.1 ± 13.3, after = 82.8 ± 9.2, Δ = -43.3% and Intron 4b/a: before = 143.2 ± 8, after = 102.7 ± 5.8 mg/dL, Δ = -28.3%) in response to ET compared to those who carried the mutant allele. Superoxide dismutase activity was significantly increased in trained women whereas no changes were observed in malondialdehyde levels. Women without eNOS gene polymorphism at position -786T>C and Intron 4b/a showed a greater reduction of plasma cholesterol levels in response to ET. Furthermore, no genotype influence was observed on arterial blood pressure or oxidative stress status in this population.
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Affiliation(s)
- R D Esposti
- Laboratório de Pesquisas em Fisiologia Cardiovascular e Atividade Física, Universidade Estadual Paulista, Rio Claro, SP, Brasil
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24
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Mezzacappa MA, Facchini FP, Pinto AC, Cassone AEL, Souza DS, Bezerra MAC, Albuquerque DM, Saad STO, Costa FF. Clinical and genetic risk factors for moderate hyperbilirubinemia in Brazilian newborn infants. J Perinatol 2010; 30:819-26. [PMID: 20376058 DOI: 10.1038/jp.2010.48] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To identify clinical and genetic risk factors for moderate hyperbilirubinemia during the first week of life. STUDY DESIGN Using univariate and multivariate multiple regression analyses, the RR for clinical factors, the African variant of glucose-6-phosphate dehydrogenase (G6PD) deficiency (G202A/A376G), and (TA)(n) UGT1A1 polymorphisms were established in a cohort of 608 Brazilian newborn infants. Hyperbilirubinemia was monitored until 134.5 ± 49.8 h of life (IQR, 111.0 to 156.7). The dependent variable was total bilirubinemia (TB) ≥12.9 mg per 100 ml estimated by transcutaneous or plasma bilirubin measurements. RESULT The African variant of G6PD deficiency and (TA)(7)/(TA)(7) and (TA)(7)/(TA)(8) polymorphisms present in 6.1 and 12.0% of newborns, respectively, were not risk factors for moderate hyperbilirubinemia. Coexpression of G6DP deficiency and UGT1A1 polymorphisms occurred in 0.49% of the subjects. Independent clinical predictors for TB≥ 12.9 mg per 100 ml were gestational age <38 weeks and reference curve percentiles >P40th. CONCLUSION In this study, G6PD deficiency and UGT1A1 gene promoter polymorphisms were not risk factors for moderate hyperbilirubinemia. Genetic factors may vary considerably in importance among different populations.
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Affiliation(s)
- M A Mezzacappa
- Division of Neonatology, Department of Pediatrics, School of Medical Sciences, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
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25
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Affiliation(s)
- M C Scherr
- Clinical Oncology Service, Department of Internal Medicine, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
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26
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Peres RMB, Costa CRC, Andrade PD, Bonon SHA, Albuquerque DM, de Oliveira C, Vigorito AC, Aranha FJP, de Souza CA, Costa SCB. Surveillance of active human cytomegalovirus infection in hematopoietic stem cell transplantation (HLA sibling identical donor): search for optimal cutoff value by real-time PCR. BMC Infect Dis 2010; 10:147. [PMID: 20515464 PMCID: PMC2890007 DOI: 10.1186/1471-2334-10-147] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 06/01/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Human cytomegalovirus (CMV) infection still causes significant morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). Therefore, it is extremely important to diagnosis and monitor active CMV infection in HSCT patients, defining the CMV DNA levels of virus replication that warrant intervention with antiviral agents in order to accurately prevent CMV disease and further related complications. METHODS During the first 150 days after allogeneic HSTC, thirty patients were monitored weekly for active CMV infection by pp65 antigenemia, nested-PCR and real-time PCR assays. Receiver operating characteristic (ROC) plot analysis was performed to determine a threshold value of the CMV DNA load by real-time PCR. RESULTS Using ROC curves, the optimal cutoff value by real-time PCR was 418.4 copies/104 PBL (sensitivity, 71.4%; specificity, 89.7%). Twenty seven (90%) of the 30 analyzed patients had active CMV infection and two (6.7%) developed CMV disease. Eleven (40.7%) of these 27 patients had acute GVHD, 18 (66.7%) had opportunistic infection, 5 (18.5%) had chronic rejection and 11 (40.7%) died - one died of CMV disease associated with GVHD and bacterial infection. CONCLUSIONS The low incidence of CMV disease in HSCT recipients in our study attests to the efficacy of CMV surveillance based on clinical routine assay. The quantification of CMV DNA load using real-time PCR appears to be applicable to the clinical practice and an optimal cutoff value for guiding timely preemptive therapy should be clinically validated in future studies.
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Affiliation(s)
- Renata M B Peres
- Department of Clinical Medicine, Faculty of Medical Sciences, University of Campinas, P.O. Box 6111, Zipe Code 13083-970, Campinas, SP, Brazil
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27
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Kerbauy FR, Colleoni GWB, Saad STO, Regis Silva MR, Correa Alves A, Aguiar KCC, Albuquerque DM, Kobarg J, Seixas MT, Kerbauy J. Detection and Possible Prognostic Relevance ofp53Gene Mutations in Diffuse Large B-cell Lymphoma. An Analysis of 51 Cases and Review of the Literature. Leuk Lymphoma 2009; 45:2071-8. [PMID: 15370252 DOI: 10.1080/10428190410001713170] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin's lymphoma. Although the presence of p53 gene mutations has been considered as a bad prognostic feature in DLBCL, its clinical significance is still controversial. The aims of this study were: detect the presence of mutations in exons 5 to 9 of the p53 gene and correlate it to prognosis in DLBCL. Fifty-one DLBCL patients were enrolled in this study. Expression of p53 was evaluated by immunohistochemistry. The screening of p53 mutations was performed using PCR-SSCP methods. Cases showing a mobility shift on SSCP electrophoresis were analyzed by automatic sequencing. We could identify 8 missense mutations in 6 of 48 cases (12.5%). In addition, we found a known polymorphism at codon 213 and 2 instances of silent mutations. Of all mutations/polymorphisms found, 7 (64%) were localized in codons previously described as p53 hot spots in NHL cases. Of the remaining alterations (4 or 36%), 2 mutations were localized in codons previously described as hot spots for p53 in other tumors and 2 (codon 142 of the exon 5 and codon 195 of the exon 6), in codons not described as hot spots for p53 up to now. The presence of missense mutations in exons 5 to 9 of p53 gene had adverse impact on overall survival (P = 0.020). Cox's Regression Model identified that high-risk International Prognostic Index (IPI) and p53 gene mutations have independent negative impact on OS. Therefore, the association of IPI with cellular factors, such as p53 mutation, can be very helpful in deciding when we should indicate more aggressive therapies in patients with DLBCL, to somehow increase the chance of cure in these patients.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Cohort Studies
- Exons
- Humans
- Lymphoma, B-Cell/diagnosis
- Lymphoma, B-Cell/genetics
- Lymphoma, B-Cell/mortality
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/mortality
- Middle Aged
- Mutation
- Prognosis
- Survival Analysis
- Treatment Outcome
- Tumor Suppressor Protein p53/genetics
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Affiliation(s)
- Fábio R Kerbauy
- Discipline of Hematology and Hemotherapy--Universidade Federal de São Paulo, UNIFESP/EPM, Brazil
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28
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Bezerra MAC, Albuquerque DM, Santos MNN, Kimura EM, Jorge SEDC, Oliveira DM, Domingues BLTB, Peres JC, Araújo AS, Costa FF, Sonati MF. Two new unstable haemoglobins leading to chronic haemolytic anaemia: Hb Caruaru [beta122 (GH5) Phe-->Ser], a probable case of germ line mutation, and Hb Olinda [beta22 (B4) - 25 (B7)], a deletion of a 12 base-pair sequence. Eur J Haematol 2009; 83:378-82. [PMID: 19527272 DOI: 10.1111/j.1600-0609.2009.01296.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We describe here two new unstable beta-globin variants, Hb Caruaru and Hb Olinda, found in northeastern Brazil, both associated with chronic haemolytic anaemia. Haemoglobin Caruaru is caused by a single base substitution at codon 122 (TTC-->TCC), possibly originating from the germ line cells of the patient's grandmother. Haemoglobin Olinda is also a de novo mutation, caused by a 12 bp deletion leading to the removal of the 22nd to the 25th residues of the normal beta-globin chain.
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Affiliation(s)
- Marcos A C Bezerra
- Haematology and Haemotherapy Centre of Pernambuco-HEMOPE, Recife, Pernambuco, Brazil
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Kimura EM, Oliveira DM, Jorge SEDC, Abreu CF, Albuquerque DM, Costa FF, Sonati MDF. Identificação e caracterização de variantes novas e raras da hemoglobina humana. Rev Bras Hematol Hemoter 2008. [DOI: 10.1590/s1516-84842008000400016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Moreira LS, de Andrade TG, Albuquerque DM, Cunha AF, Fattori A, Saad STO, Costa FF. IDENTIFICATION OF DIFFERENTIALLY EXPRESSED GENES INDUCED BY HYDROXYUREA IN RETICULOCYTES FROM SICKLE CELL ANAEMIA PATIENTS. Clin Exp Pharmacol Physiol 2008; 35:651-5. [DOI: 10.1111/j.1440-1681.2007.04861.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Fattori A, Kimura EM, Albuquerque DM, Oliveira DM, Costa FF, Sonati MF. Hb Indianapolis [beta112 (G14) Cys-->Arg] as the probable cause of moderate hemolytic anemia and renal damage in a Brazilian patient. Am J Hematol 2007; 82:672-5. [PMID: 17211844 DOI: 10.1002/ajh.20860] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hemoglobin (Hb) Indianapolis [beta112 (G14) Cys-->Arg] is a rare and slightly unstable beta-globin variant. All carriers described to date were clinically normal with only mild reticulocytosis. We report here a case of a Brazilian patient in whom hemolytic anemia and acute renal failure were probably caused by the presence of this variant.
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Affiliation(s)
- A Fattori
- Hematology and Hemotherapy Center, School of Medical Sciences, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
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32
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Jorge SEC, Kimura EM, Oliveira DM, Ogo S, Albuquerque DM, Costa FF, Sonati MDF. Three new alpha-globin variants: Hb Itapira [alpha30(B11)Glu-->Val (alpha1)], Hb Bom Jesus Da Lapa [alpha30(B11)Glu-->Ala (alpha1)] and Hb Boa Esperança [alpha16(A14)Lys-->Thr (alpha2)]. Hemoglobin 2007; 31:151-7. [PMID: 17486496 DOI: 10.1080/03630260701289425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 10/23/2022]
Abstract
Three novel alpha-globin variants were found during a screening program for hemoglobinopathies in blood donors at the UNICAMP Hematology and Hemotherapy Center, Campinas, State of São Paulo, Southeastern Brazil. They were named for the town of origin of the carrier as Hb Itapira [alpha30(B11)Glu-->Val], Hb Bom Jesus da Lapa [alpha30(B11)Glu-->Ala] and Hb Boa Esperança [alpha16(A14)Lys-->Thr]. Hb Itapira, like Hb Bom Jesus da Lapa, shows an electrophoretic mobility similar to that of Hb S [beta6(A3)GluVal, GAG-->GTG] at alkaline pH; it is associated with a triplicate alpha-globin allele (alphaalphaalpha(anti 3.7)) and corresponds to only 5.5% of the total hemoglobin (Hb). Hb Boa Esperança, found in two different individuals, moves faster than Hb A and exhibits an abnormal functional performance.
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Affiliation(s)
- Susan E Costa Jorge
- Laboratory of Hemoglobinopathies, Department of Clinical Pathology, School of Medical Sciences, State University of Campinas-UNICAMP, Campinas, State of São Paulo, Brazil
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33
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Gambero S, Canalli AA, Traina F, Albuquerque DM, Saad STO, Costa FF, Conran N. Therapy with hydroxyurea is associated with reduced adhesion molecule gene and protein expression in sickle red cells with a concomitant reduction in adhesive properties. Eur J Haematol 2007; 78:144-51. [PMID: 17313560 DOI: 10.1111/j.1600-0609.2006.00788.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Propagation of the vaso-occlusive process in sickle cell anaemia (SCA) is a complex process involving the adhesion of steady-state SCA patients red cells and reticulocytes to the vascular endothelium. The effect of hydroxyurea therapy (HUT) on the adhesive properties of sickle cells and the expression of adhesion molecule genes by erythroid cells of SCA individuals is not yet fully understood. The expressions of the CD36 gene and the VLA-4-integrin subunit genes, CD49d (alpha-subunit) and CD29 (beta-subunit), were compared in the reticulocytes of steady-state SCA patients and patients on HUT using real-time PCR. Basal adhesion of red cells from these subjects was also compared using static adhesion assays, as was surface protein expression, using flow cytometry. Basal sickle red cell adhesion to fibronectin was significantly greater than that of normal cells (P < 0.01); in contrast, HUT was associated with significantly lower levels (P < 0.01) of red cell adhesion that were similar to those of control cells; this decrease could not be justified solely by altered reticulocyte numbers in this population. Accordingly, flow cytometry demonstrated that reticulocytes from patients on HUT had significantly lower CD36 and CD49d surface expressions (P < 0.01) and, importantly, significantly lower expressions of the CD36, CD49d and CD29 genes (P < 0.05) than reticulocytes of SCA patients not on HUT. Taken together, data support the hypothesis that HUT reduces the adhesive properties of sickle cells and that this decrease appears to be mediated, at least in part, by a decrease in the gene and, consequently, surface protein expression of adhesion molecules such as VLA-4 and CD36.
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Affiliation(s)
- Sheley Gambero
- The Haematology and Haemotherapy Centre, State University of Campinas - UNICAMP, Campinas, Brazil
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34
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Ortega MM, Faria RMD, Shitara ES, Assis AM, Albuquerque DM, Oliveira JSR, Noguti MAE, Faria JR, Costa FF, Lima CSP. N-RAS and K-RAS gene mutations in Brazilian patients with multiple myeloma. Leuk Lymphoma 2006; 47:285-9. [PMID: 16321859 DOI: 10.1080/10428190500300969] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 10/25/2022]
Abstract
Point mutations affecting codons 12, 13 (exon 1) and 61 (exon 2) of the N-RAS gene and codons 12 and 13 (exon 1) of the K-RAS gene are identified in approximately 30.0% and 10.0%, respectively, of multiple myeloma (MM) patients living in the northern hemisphere. To date, there are no reports about the prevalence of RAS gene mutations in MM Brazilian patients, and this comprised the aim of the present study. DNA from bone marrow aspirates of 252 patients with MM (139 males and 113 females; aged 59.33 +/- 11.95 years) were investigated for whole exons 1 and 2 of the N-RAS gene and whole exon 1 of the K-RAS gene by direct sequencing of DNA amplified in vitro by the polymerase chain reaction. Fifty-three out of 252 (21.03%) MM patients presented RAS mutations. Heterozygous mutations at codons 4, 10 (exon 1), 61 and 65 (exon 2) of the N-RAS gene were identified in seven out of 252 (2.78%) patients. K-RAS heterozygous mutations at codons 7, 12, 13 (exon 1) were seen in 46 out of 252 (18.25%) patients. To the best of our knowledge, the mutation at codon 7 of K-RAS gene is reported for the first time in MM. Taken together, these results suggest that Brazilian MM patients are characterized by: (i) a low prevalence of RAS mutation and (ii) RAS mutations located at distinct regions of the critical codons of the N-RAS and K-RAS genes.
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Affiliation(s)
- Manoela M Ortega
- Department of Internal Medicine, State University of Campinas, Campinas, São Paulo, Brazil
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35
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Hollanda LM, Lima CSP, Cunha AF, Albuquerque DM, Vassallo J, Ozelo MC, Joazeiro PP, Saad STO, Costa FF. An inherited mutation leading to production of only the short isoform of GATA-1 is associated with impaired erythropoiesis. Nat Genet 2006; 38:807-12. [PMID: 16783379 DOI: 10.1038/ng1825] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2006] [Accepted: 05/16/2006] [Indexed: 11/10/2022]
Abstract
Acquired somatic mutations in exon 2 of the hematopoietic transcription factor GATA-1 have been found in individuals with Down syndrome with both transient myeloproliferative disorder and acute megakaryoblastic leukemia. These mutations prevent the synthesis of the full-length protein but allow the synthesis of its short isoform, GATA-1s. Experiments in mice suggest that GATA-1s supports normal adult megakaryopoiesis, platelet formation and erythropoiesis. Here we report a mutation, 332G --> C, in exon 2 of GATA1, leading to the synthesis of only the short isoform in seven affected males from two generations of a family. Hematological profiles of affected males demonstrate macrocytic anemia, normal platelet counts and neutropenia in most cases. Altogether, data suggest that GATA-1s alone, produced in low or normal levels, is not sufficient to support normal erythropoiesis. Moreover, this is the first study to indicate that a germline splicing mutation does not lead to leukemia in the absence of other cooperating events, such as Down syndrome.
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Affiliation(s)
- Luciana M Hollanda
- Department of Internal Medicine, Hemocentro, School of Medical Science, Universidade Estadual de Campinas, Campinas, São Paulo 13083-970, Brazil
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36
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Weinstein BI, Erramouspe B, Albuquerque DM, Oliveira DM, Kimura EM, Costa FF, Sonati MF. Hb Florida: a novel elongated C-terminal beta-globin variant causing dominant beta-thalassemia phenotype. Am J Hematol 2006; 81:358-60. [PMID: 16628732 DOI: 10.1002/ajh.20561] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/10/2022]
Abstract
We report here a new frameshift mutation in exon 3 of the beta-globin gene, a single nucleotide deletion (-C) in between codons 140/141 (GCC/CTG-->GCC/TG), found in an 8-year-old Argentinean girl with clinical picture of thalassemia intermedia. It leads to a beta-chain that is elongated to 156 amino acids [(141)Trp-Pro-Thr-Ser-Ile-Thr-Lys-Leu-Ala-Phe-Leu-Leu-Ser-Asn-Phe-(156)Tyr-COOH]. The resulting hemoglobin, which we named Hb Florida, was not detected in peripheral blood; however, erythroid hyperplasia and dyserythropoiesis with large inclusion bodies on methyl violet staining were observed in bone marrow, suggesting that this is a hyperunstable variant producing a dominant beta-thalassemia phenotype, since the other beta-allele was completely normal.
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Affiliation(s)
- B I Weinstein
- Hematology Department, French Hospital, Buenos Aires, Argentina
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