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de Souza VL, Costa FB, Martins TF, de Oliveira PR, Lima J, Guimarães DP, Dos Santos EA, de Moura-Martiniano NO, Sato TP, Borsoi ABP, Bitencourth K, Souza JRLD, Gazeta GS, Guilherme E, Santos FGDA. Detection of Rickettsia tamurae-like and other spotted fever group rickettsiae in ticks (Acari: Ixodidae) associated with wild birds in the Western Amazon, Brazil. Ticks Tick Borne Dis 2023; 14:102182. [PMID: 37100028 DOI: 10.1016/j.ttbdis.2023.102182] [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: 12/26/2021] [Revised: 04/05/2023] [Accepted: 04/08/2023] [Indexed: 04/28/2023]
Abstract
Ticks are vectors for several pathogens, including bacteria belonging to the Rickettsia genus, such as Rickettsia rickettsii and Rickettsia parkeri, the causative agents of spotted fever. The aim of the present study was to investigate the tick species richness and rickettsial agents associated with wild birds captured in the Humaita Forest Reserve, Acre, in the Western Amazon region. Wild birds were captured with ornithological nets for visual inspection with the purpose of collecting ticks, which were identified through morphological analyses and molecular tests for several genes (12S rDNA, 16S rDNA, gltA, ompA, and sca4). A total of 607 wild birds were captured, 12% of which were parasitized by 268 ticks of the Amblyomma genus, with new host-parasite associations reported for Amblyomma calcaratum, Amblyomma geayi, Amblyomma longirostre, Amblyomma naponense, Amblyomma nodosum, and Amblyomma varium. Of the total ticks collected, 113 were tested for the presence of rickettsial DNA fragments, with 19 testing positive for R. parkeri in A. geayi, Rickettsia tamurae-like in Amblyomma sp., and Rickettsia amblyommatis in A. geayi, A. longirostre, and Amblyomma sp. We detected R. tamurae-like in Amblyomma larvae for the first time in the Western Brazilian Amazon biome, and registered spotted fever group rickettsiae, although the relevance of the detected species in a public health context should be further explored in South America, as well as new host-parasite interactions in this underexplored region.
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Affiliation(s)
- Vanessa Lima de Souza
- Programa de Pós-graduação em Sanidade e Produção Animal Sustentável na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brazil; Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil.
| | - Francisco Borges Costa
- Programa de Pós-graduação em Ciência Animal, Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | - Thiago Fernandes Martins
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil; Departamento de Laboratórios Especializados, Superintendência de Controle de Endemias, Secretaria de Estado da Saúde de São Paulo, São Paulo, SP, Brazil
| | - Patricia Rosa de Oliveira
- Programa de Pós-graduação em Química, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, São Luís, MA, Brazil; Programa de Pós-graduação em Biociências, Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista, BA, Brazil
| | - Jonatas Lima
- Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | - David Pedroza Guimarães
- Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | - Ednaira Alencar Dos Santos
- Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | - Nicole Oliveira de Moura-Martiniano
- Laboratório de Carrapatos e outros Artrópodes Ápteros - Referência Nacional em Vetores das Rickettsioses, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Tayra Pereira Sato
- Laboratório de Carrapatos e outros Artrópodes Ápteros - Referência Nacional em Vetores das Rickettsioses, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Ana Beatriz Pais Borsoi
- Laboratório de Carrapatos e outros Artrópodes Ápteros - Referência Nacional em Vetores das Rickettsioses, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Karla Bitencourth
- Laboratório de Carrapatos e outros Artrópodes Ápteros - Referência Nacional em Vetores das Rickettsioses, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | | | - Gilberto Salles Gazeta
- Laboratório de Carrapatos e outros Artrópodes Ápteros - Referência Nacional em Vetores das Rickettsioses, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Edson Guilherme
- Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil; Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
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Lacerda CF, Cruvinel-Carloni A, de Oliveira ATT, Scapulatempo-Neto C, López RVM, Crema E, Adad SJ, Rodrigues MAM, Henry MACA, Guimarães DP, Reis RM. Mutational profile of TP53 in esophageal squamous cell carcinoma associated with chagasic megaesophagus. Dis Esophagus 2017; 30:1-9. [PMID: 28375484 DOI: 10.1093/dote/dow040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 12/30/2016] [Indexed: 02/07/2023]
Abstract
Chaga's disease is an important communicable neglected disease that is gaining wider attention due to its increasing incidence worldwide. Achalasia due to chagasic megaesophagus (CM), a complication of this disease, is a known-yet, poorly understood-etiological factor for esophageal squamous cell carcinoma (ESCC) development. In this study, we aimed to perform the analysis of TP53 mutations in a series of Brazilian patients with ESCC that developed in the context CM (ESCC/CM), and to compare with the TP53 mutation profile of patients with benign CM and patients with nonchagasic ESCC. Additionally, we intended to correlate the TP53 mutation results with patient's clinical pathological features. By polymerase chain reaction (PCR) followed by direct sequencing of the hotspot regions of TP53 (exon 5 to 8), we found that TP53 mutations were present in 40.6% (13/32) of the ESCC/CM group, 45% (18/40) of the nonchagasic ESCC group, and in only 3% (1/33) of the benign CM group. Missense mutations were the most common in the three groups, yet, the type and mutated exon mutation varied significantly among the groups. Clinically, the groups exhibited distinct features, with both cancer groups (ESCC and ESCC/CM) been significantly associated higher consumption of alcohol and tobacco, older age, worse Karnofsky performance status, poor outcome than the patients with benign CM. No significant association was found between TP53 mutation profile and clinical-pathological features in any of the three groups. We describe first the time the analysis of TP53 mutations in ESCC that developed in the context of CM, and the observed high frequency of mutations, suggest that TP53 also plays an important role in the tumorigenic process of this unexplored etiological condition.
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Affiliation(s)
- C F Lacerda
- Department of Digestive Surgery, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.,Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - A Cruvinel-Carloni
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | | | - C Scapulatempo-Neto
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.,Department of Pathology, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - R V M López
- Centre for Researcher Support, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - E Crema
- Department of Digestive Surgery and Pathology, Medical School, UFTM -Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - S J Adad
- Department of Digestive Surgery and Pathology, Medical School, UFTM -Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - M A M Rodrigues
- Department of Gastroenterology Surgery and Pathology, Medical School, UNESP - São Paulo State University, Botucatu, São Paulo, Brazil
| | - M A C A Henry
- Department of Gastroenterology Surgery and Pathology, Medical School, UNESP - São Paulo State University, Botucatu, São Paulo, Brazil
| | - D P Guimarães
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.,Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - R M Reis
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.,Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Guilherme E, Pedroza D, Guimarães DP, De Lima ACG. First records of the Wing-barred Seedeater, Sporophila americana (Gmelin, 1789) (Thraupidae), for Acre and a revision of its distribution in the Brazilian Amazon. cl 2016. [DOI: 10.15560/12.2.1853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
We present the first records of the Wing-barred Seedeater (Sporophila americana)in Acre, Brazil. These observations, together with the published records and the specimens housed in museum collections, indicate that S. americana occurs over a considerably larger geographical area than is currently presented in the relevant literature. The occurrence of S. americana in the region of São Paulo de Olivença, in the Brazilian state of Amazonas indicates the potential existence of a sympatric zone with the congener Caqueta Seedeater (Sporophila murallae) in the western Amazonia.
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Yamane LS, Scapulatempo-Neto C, Alvarenga L, Oliveira CZ, Berardinelli GN, Almodova E, Cunha TR, Fava G, Colaiacovo W, Melani A, Fregnani JH, Reis RM, Guimarães DP. KRAS and BRAF mutations and MSI status in precursor lesions of colorectal cancer detected by colonoscopy. Oncol Rep 2014; 32:1419-26. [PMID: 25050586 DOI: 10.3892/or.2014.3338] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 06/04/2014] [Indexed: 12/15/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most frequent cancers worldwide. Adenoma is the main precursor lesion and, recently, the serrated polyps were described as a group of colorectal lesions with malignant potential. The morphologic and biologic characterizations of serrated polyps remain limited. The aim of the present study was to determine the frequency of KRAS and BRAF mutations and microsatellite instability (MSI) in CRC precursor lesions, to evaluate the association between molecular, pathologic and morphologic alterations in precursor lesions and to compare with the alterations detected in CRC. A series of 342 precursor lesions were removed from 155 patients during colonoscopy. After morphologic classification, molecular analysis was performed in 103 precursor lesions, and their genetic profile compared with 47 sporadic CRCs. Adenomas were the main precursor lesions (70.2%). Among the serrated polyps, the main precursor lesion was hyperplastic polyps (HPs) (82.4%), followed by sessile serrated adenomas (12.7%) and traditional serrated adenomas (2.0%). KRAS mutations were detected in 13.6% of the precursor lesions, namely in adenomas and in HPs, but in no serrated adenoma. BRAF mutations were found in 9 (8.7%) precursor lesions, mainly associated with serrated polyps and absent in adenomas (P<0.001). High MSI (MSI-H) was absent in precursor lesions. In the 47 CCR cases, 46.8% exhibited KRAS mutation, 6.5% BRAF mutations and 10.6% MSI-H. This study confirms the role of KRAS and BRAF mutations in CRC carcinogenesis, a crucial step in implementing CRC screening strategies.
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Affiliation(s)
- L S Yamane
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - C Scapulatempo-Neto
- Department of Pathology, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - L Alvarenga
- Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - C Z Oliveira
- Department of Epidemiology and Biostatistics, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - G N Berardinelli
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - E Almodova
- Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - T R Cunha
- Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - G Fava
- Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - W Colaiacovo
- Department of Endoscopy, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - A Melani
- Department of Digestive Surgery, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - J H Fregnani
- Department of Epidemiology and Biostatistics, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - R M Reis
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - D P Guimarães
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
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Rossini A, Rapozo DCM, Soares Lima SC, Guimarães DP, Ferreira MA, Teixeira R, Kruel CDP, Barros SGS, Andreollo NA, Acatauassú R, Matos HJ, Albano RM, Pinto LFR. Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Carcinogenesis 2007; 28:2537-42. [PMID: 17916905 DOI: 10.1093/carcin/bgm222] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Esophageal cancer is among the most common and fatal tumors in the world. Eighty percent of esophageal tumors are esophageal squamous cell carcinoma (ESCC). Brazil is one of the high incidence areas in the West, where tobacco and alcohol consumption have been associated with ESCC. However, polymorphisms in xenobiotic metabolizing genes may also contribute to the risk. Therefore, in this study, we analyzed the risk of ESCC associated with tobacco and alcohol consumption and with polymorphisms of CYP2A6 (CYP2A6*2), CYP2E1 (CYP2E1*5B, CYP2E1*6), GSTP1 (Ile105Val), GSTM1 and GSTT1 null genotypes in 126 cases and 252 age- and gender-matched controls. Data on the amount, length and type of tobacco and alcohol consumed were collected, and DNA was extracted from blood lymphocytes from all individuals. Polymorphisms were analyzed by polymerase chain reaction (PCR)-multiplex (GSTM1 and T1), PCR-Restriction Fragment Length Polymorphism (CYP2E1*5B and *6 and GSTP1 Ile105Val) or allele-specific PCR amplification (CYP2A6*2). Risks were evaluated by multivariate conditional regression analysis. As expected, tobacco [odds ratio (OR) = 6.71, 95% confidence interval (95% CI) 3.08-14.63] and alcohol (OR = 16.98, CI 7.8-36.98) consumption, independently or together (OR = 26.91, CI 13.39-54.05) were risk factors. GSTP1 Ile105Val polymorphism was an independent risk factor (OR = 2.12, CI 1.37-3.29), whereas GSTT1 wild-type was an independent protective factor for ESCC (OR = 0.37, CI 0.16-0.79). There was approximately 80% statistical power to detect both results. There was no risk associated with CYP2A6, CYP2E1 and GSTM1 polymorphisms. In conclusion, this study suggests an opposite role of GSTP1 and GSTT1 polymorphisms for the risk for ESCC.
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Affiliation(s)
- A Rossini
- Departamento de Bioquímica, IBRAG, Universidade do Estado do Rio de Janeiro, RJ 20551-013, Brasil
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