16 research outputs found

    an in vitro approach

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    Funding Information: The authors thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for a grant and M.C.A. Lima Fellowship (Process 306865/612020-3); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES—Finance Code N° 001) and the Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE). J.V.R. Rocha and I.J. Cruz Filho would like to thank FACEPE for the Graduate Scholarship (Process PBPG-1832-4.01/22) and Researcher Fixation Scholarships (Process BFP-0038-4.03/21), respectively. In addition, M.C.A. Lima and A.L. Aires would like to thank FACEPE Research Project Aid (Process APQ-0498-4.03/19) and (Process APQ-Emergent 1181-4.03/22), respectively. We would like to thank Mil Madeiras Preciosas, a subsidiary of the Swiss group Precious Woods ( http://preciouswoods.com.br/ ) for supplying the Clarisia racemosa trunks. Thanks to MR4, who provided us with the Plasmodium falciparum MRA-1029 strain provided by Andrew Talman, Robert Sinden that we used in the trials. The work was partially supported by the FCT project reference CIRCNA/BRB/0281/2019_AMAZING and GHTM-UID/Multi/04413/2013. Funding Information: The authors thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for a grant and M.C.A. Lima Fellowship (Process 306865/612020-3); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES—Finance Code N° 001) and the Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE). J.V.R. Rocha and I.J. Cruz Filho would like to thank FACEPE for the Graduate Scholarship (Process PBPG-1832-4.01/22) and Researcher Fixation Scholarships (Process BFP-0038-4.03/21), respectively. In addition, M.C.A. Lima and A.L. Aires would like to thank FACEPE Research Project Aid (Process APQ-0498-4.03/19) and (Process APQ-Emergent 1181-4.03/22), respectively. We would like to thank Mil Madeiras Preciosas, a subsidiary of the Swiss group Precious Woods (http://preciouswoods.com.br/) for supplying the Clarisia racemosa trunks. Thanks to MR4, who provided us with the Plasmodium falciparum MRA-1029 strain provided by Andrew Talman, Robert Sinden that we used in the trials. The work was partially supported by the FCT project reference CIRCNA/BRB/0281/2019_AMAZING and GHTM-UID/Multi/04413/2013. Publisher Copyright: © 2023, King Abdulaziz City for Science and Technology.Clarisia racemosa Ruiz & Pav is a neotropical species found in humid forests from southern Mexico to southern Brazil. There are few studies related to the ethnopharmacological use of C. racemosa. Our objective was to evaluate the hydroalcoholic extract of C. racemosa as a potential antiparasitic agent. For this, we performed in vitro assays against strains of Leishmania amazonensis, Trypanosoma cruzi, Plasmodium falciparum, and Schistosoma mansoni. At the same time, immunomodulatory activity tests were carried out. The results demonstrated that the extract was able to stimulate and activate immune cells. In preliminary antiparasitic tests, structural modifications were observed in the promastigote form of L. amazonensis and in adult worms of S. mansoni. The extract was able to inhibit the growth of trypomastigote form of T. cruzi and finally showed low antiparasitic activity against strains of P. falciparum. It is pioneering work and these results demonstrate that C. racemosa extract is a promising alternative and contributes to the arsenal of possible forms of treatment to combat parasites.publishersversionpublishe

    revista Arquivos Internacionais de Otorrinolaringologia

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    p. 351-354Introdução: Papiloma nasossinusal é um tumor benigno com origem no epitélio schneideriano da parede nasal lateral. Sua incidência é rara e de acordo com a literatura responde por 0,5 a 4% de todos os tumores nasais. Objetivo: Reportar a experiência da nossa instituição no tratamento do papiloma nasossinusal invertido utilizando acesso endoscópico e comparar os resultados obtidos com os relatos da literatura. Método: Estudo retrospectivo de todos os pacientes com papiloma nasossinusal que realizaram tratamento cirúrgico puramente endoscópico no ambulatório de Otorrinolaringologia do Hospital das Clínicas da Universidade Federal da Bahia (UFBA), no período de janeiro de 2004 a maio de 2010. Resultados: Um total de 12 pacientes foi incluído neste estudo. O seguimento médio foi de 23 meses. Houve 1 caso de recidiva. Não ocorreu transformação maligna nestes casos. Conclusão: O tratamento do papiloma nasossinusal tem sido amplamente beneficiado com o avanço das técnicas endoscópicas, com taxas de recorrência equivalentes àquelas reportadas por acesso externo. Exames de imagem são fundamentais no planejamento pré-operatório e na decisão da técnica cirúrgica. Um seguimento regular e de longo prazo é essencial para um bom acompanhamento da evolução desta patologi

    Endoscopic Treatment of Sinonasal Papilloma: A Retrospective Clinical Study

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    Introduction: Sinonasal Papilloma is a benign tumor originating from the epithelium schneiderian lateral nasal wall. Its incidence is rare and according to literature accounts for 0.5 to 4% of all nasal tumors. Objective: To report our institution's experience in the treatment of sinonasal inverted papilloma using endoscopic approach and compare the results with the literature. Methods: A retrospective study of all patients with sinonasal papillomas who underwent a purely endoscopic surgery in the Otorhinolaryngology, Hospital das Clinicas, Federal University of Bahia (UFBA), from January 2004 to May 2010. Results: A total of 12 patients were included in this study. The median follow-up was 23 months. There was one case of recurrence. Malignant transformation has not occurred in these cases. Conclusion: The treatment of sinonasal papilloma has been largely benefited from the advances in endoscopic techniques, with recurrence rates equivalent to those reported for external access. Imaging exams are essential in preoperative planning and the decision of surgical technique. A regular follow-up and long term is essential for a good monitoring of the evolution of this pathology

    Arq. Int. Otorrinolaringol.

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    p.130-134Introdução: A osteomielite frontal é uma complicação de rinossinusite que pode ter evolução aguda ou crônica. Há reação inflamatória com aumento da pressão intra-óssea, isquemia e necrose local, levando à formação de abscesso ósseo. Não havendo drenagem, ocorrerá descolamento do periósteo, invasão de partes moles e piora da isquemia com posterior sequestro ósseo. Método: Relato de caso de um paciente internado em serviço de emergência de outra instituição por complicação de rinossinusite que foi encaminhado para o Serviço de Otorrinolaringologia do Hospital Universitário Professor Edgard Santos da Universidade Federal da Bahia. Relato de Caso: Paciente masculino, 16 anos, apresentou-se ao serviço de emergência de outra instituição com cefaleia, vômitos e febre que evoluiu com edema periorbitário e frontal à esquerda, cursando com flutuação palpebral e frontal.Submetido à drenagem de abscesso palpebral e frontal, com antibioticoterapia de amplo espectro sem melhora. Encaminhado para o nosso serviço mantendo edema e flutuação em região frontal e edema leve em região periorbitária esquerda. A endoscopia nasal evidenciou edema em meato médio à esquerda e a tomografia computadorizada mostrou sinusite fronto-etmoidal à esquerda e sinais de osteomielite frontal com sequestro ósseo e empiema epidural.Submetido à cirurgia endoscópica nasossinusal, acesso externo para exérese do osso frontal acometido e drenagem do empiema epidural. Evoluiu com remissão da doença. Considerações Finais: A falência no diagnóstico e no tratamento das complicações da rinossinusite pode levar a sequelas e complicações fatais.O diagnóstico de osteomielite frontal é firmado pela suspeita clinica e confirmado por exames radiológicos.A cirurgia está indicada quando a evolução for insidiosa, havendo sequestro ósseo ou complicações intracranianas.São Paul

    Arq. Int. Otorrinolaringol.

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    p.241-244Introdução: Dentre as complicações da rinossinusite, as orbitárias são as mais frequentes, e estas, ocorrem na maioria dos casos entre jovens e crianças. Complicações simultâneas envolvendo a órbita e o espaço intracraniano são extremamente raras, mas devem ser tratadas agressivamente pois oferecem alta taxa de morbidade e mortalidade. Relato de caso: Neste trabalho, os autores relatam um caso de um paciente que se apresentou com celulite pré-septal e abscesso epidural, como complicações simultâneas de uma rinossinusite aguda. No paciente deste estudo, optou-se pelo tratamento clínico associado à cirurgia endoscópica nasossinusal e drenagem neurocirúrgica do abscesso intracraniano. A TC foi suficiente no caso apresentado para a realização do diagnóstico. Comentários finais: Recomenda-se entretanto, que nos casos de pacientes com complicações da rinossinusite, a investigação da extensão intracraniana seja aprofundada, mesmo quando esta, a princípio não seja tão evidente. Dada a natureza polimicrobiana dessas infeções, uma antibioticoterapia agressiva guiada por cultura e um acompanhamento por equipe multidisciplinar, aumentam consideravelmente as chances de sucesso.São Paul

    Orbital and Intracranial Complication Resulting from Acute Rhinosinusitis: Case Report

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    Introduction: Among the rhinosinusitis complications, the orbital are the most frequent ones, occurring mostly in the youngsters and children. Simultaneous complications involving the intracranial orbit and space are extremely rare, but they must be severely treated for they have a high rate of morbidity and mortality. Case report: In this work, the authors report a case of a patient who appeared to have preseptal cellulites and epidural abscess, in the form of simultaneous complications of an acute rhinosinusitis. In the patient of this case, choice was made for a clinic treatment associated with a nasosinusal endoscopic surgery and neurosurgical drainage of the intracranial abscess. CT was enough to achieve the diagnosis of this case. Final commentaries: However, it is recommended that, in cases where patients have rhinosinusitis complications, an extensive intracranial investigation needs to be deepened even when this is not so evident in the beginning. Given the polymicrobial nature of these infections, an aggressive culture-guided antibiotic therapy and a multidisciplinary follow-up significantly increase the likelihood of success

    Nasolacrimal Duct Mucocele: Case Report and Literature Review

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    Abstract Introduction Mucoceles are benign expansive cystic formations, composed of a mucus-secreting epithelium (respiratory or pseudostratified epithelium). Nasolacrimal mucocele occurs in a small proportion of children with nasolacrimal duct obstruction and is characterized by a cystic mass in the medial canthus with dilation of the nasolacrimal duct; although dacryocystoceles are rare in adults, they have been reported in patients with trachoma. Objective Discuss clinical aspects, diagnosis, and therapeutic management of mucocele of nasolacrimal duct based on literature review. Resumed Report The authors report a case of bilateral congenital nasolacrimal duct cysts in a 30-year-old man, identified as a tumor in the topography of both lacrimal sacs since birth without associated symptoms. The patient underwent successive surgical treatments, leading to recurrence of the tumor at the right side and recurrent local infections. Conclusion Endoscopic dacryocystorhinostomy has been increasingly used with good results and success rates similar to the external access

    Mucosal leishmaniasis: A Retrospective Study of 327 Cases from an Endemic Area of Leishmania (Viannia) braziliensis

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    Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2018-10-01T18:11:44Z No. of bitstreams: 1 Cincura C Mucosal....pdf: 110843 bytes, checksum: 7bc6c4c265c5463537220b1f0bc13017 (MD5)Approved for entry into archive by Ana Maria Fiscina Sampaio ([email protected]) on 2018-10-01T18:25:43Z (GMT) No. of bitstreams: 1 Cincura C Mucosal....pdf: 110843 bytes, checksum: 7bc6c4c265c5463537220b1f0bc13017 (MD5)Made available in DSpace on 2018-10-01T18:25:43Z (GMT). No. of bitstreams: 1 Cincura C Mucosal....pdf: 110843 bytes, checksum: 7bc6c4c265c5463537220b1f0bc13017 (MD5) Previous issue date: 2017National Institutes of Health (NIH) grant AI30639Universidade Federal da Bahia. Hospital Universitário Prof. Edgard Santos. Serviço de Imunologia. Salvador, BA, Brasil / Universidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, BrasilUniversidade Federal da Bahia. Hospital Universitário Prof. Edgard Santos. Serviço de Imunologia. Salvador, BA, Brasil / Universidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, BrasilUniversidade Federal da Bahia. Hospital Universitário Prof. Edgard Santos. Serviço de Imunologia. Salvador, BA, Brasil / Universidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, BrasilUniversidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, BrasilWeill Cornell Medical College. Division of Infectious Diseases. New York, NY, USAUniversidade Federal da Bahia. Hospital Universitário Prof. Edgard Santos. Serviço de Imunologia. Salvador, BA, Brasil / Universidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, BrasilUniversidade Federal da Bahia. Hospital Universitário Prof. Edgard Santos. Serviço de Imunologia. Salvador, BA, Brasil / Universidade Federal da Bahia. Programa de Pós-Graduação em Ciências da Saúde. Salvador, BA, Brasil / Fundação Oswaldo Cruz. Instituto Gonçalo Moniz. Salvador, BA, BrasilMucosal leishmaniasis (ML) is observed only in about 3% of patients with American tegumentary leishmaniasis (ATL) but has a high potential for destructive, disfiguring, and disabling sequelae. Prior reports of clinical and epidemiologic features of ML are limited by small numbers of cases. In this study, we evaluated changes in the demographic features and clinical presentation of ML in an endemic area of Leishmania braziliensis transmission over a period of 20 years. The charts of 327 patients with ML diagnosed between 1995 and 2014 were reviewed. The majority of patients (67%) were male. Age ranged from 8 months to 103 years, with a median age of 38.5 years (interquartile range: 22-58 years). The greatest number of patients was between 19 and 39 years (31%). Over the study period, there was an increase in patients with ML more than 60 years of age, an increase in ML with concomitant cutaneous lesions, a decrease in the period of time between the documentation of cutaneous lesions and the diagnosis of mucosal disease, and an increase in the frequency of patients presenting with stage I and V of ML. Moreover, there was a positive correlation between severity of mucosal disease and both age and the period of time between cutaneous lesion and mucosal disease. Response to therapy of ML remained similar over a period of 20 years. Despite the improvement in medical care during the study period, the prevalence of ML did not change and severe disease continues to be a major challenge for the management of these patients
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