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2.
Paediatr Respir Rev ; 43: 11-23, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34980576

RESUMO

Echinococcosis is a worldwide public health problem causing considerable paediatric morbidity and mortality in endemic areas. The presentation of cystic echinococcosis (CE) varies by age. Unlike adults, where hepatic involvement is common, pulmonary CE is the dominant site in the paediatric population. Pulmonary cysts are typically first seen on chest X-ray, either as an incidental finding or following respiratory symptoms after cyst rupture or secondary infection of the cyst. In children, pulmonary cysts have a broad differential diagnosis, and a definitive diagnosis relies on the combination of imaging, serology, and histology. In countries with high infectious burdens from diseases such as acquired immunodeficiency syndrome (AIDS) and tuberculosis (TB), the diagnosis is additionally challenging, as atypical infections are more common than in developed countries. Pulmonary CE is treated with a combination of surgery and chemotherapy.


Assuntos
Cistos , Equinococose Pulmonar , Adulto , Humanos , Criança , Equinococose Pulmonar/diagnóstico por imagem , Equinococose Pulmonar/terapia , Doenças Negligenciadas/diagnóstico , Doenças Negligenciadas/epidemiologia , Doenças Negligenciadas/terapia , Diagnóstico por Imagem , Diagnóstico Diferencial
3.
Am J Trop Med Hyg ; 105(6): 1476-1482, 2021 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-34670193

RESUMO

Countries across West Africa began reporting COVID-19 cases in February 2020. By March, the pandemic began disrupting activities to control and eliminate neglected tropical diseases (NTDs) as health ministries ramped up COVID-19-related policies and prevention measures. This was followed by interim guidance from the WHO in April 2020 to temporarily pause mass drug administration (MDA) and community-based surveys for NTDs. While the pandemic was quickly evolving worldwide, in most of West Africa, governments and health ministries took quick action to implement mitigation measures to slow the spread. The U.S. Agency for International Development's (USAID) Act to End NTDs | West program (Act | West) began liaising with national NTD programs in April 2020 to pave a path toward the eventual resumption of activities. This process consisted of first collecting and analyzing COVID-19 epidemiological data, policies, and standard operating procedures across the program's 11 countries. The program then developed an NTD activity restart matrix that compiled essential considerations to restart activities. By December 2020, all 11 countries in Act | West safely restarted MDA and certain surveys to monitor NTD prevalence or intervention impact. Preliminary results show satisfactory MDA program coverage, meaning that enough people are taking the medicine to keep countries on track toward achieving their NTD disease control and elimination goals, and community perceptions have remained positive. The purpose of this article is to share the lessons and best practices that have emerged from the adoption of strategies to limit the spread of the novel coronavirus during MDA and other program activities.


Assuntos
Anti-Infecciosos/uso terapêutico , COVID-19/epidemiologia , Administração Massiva de Medicamentos , Programas Nacionais de Saúde/organização & administração , Doenças Negligenciadas/terapia , SARS-CoV-2 , África Ocidental , Anti-Infecciosos/administração & dosagem , Humanos , Programas Nacionais de Saúde/normas , Guias de Prática Clínica como Assunto , Fatores de Risco , Fatores de Tempo , Clima Tropical , Estados Unidos , United States Agency for International Development
4.
Curr Drug Discov Technol ; 18(4): 473-484, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32767945

RESUMO

Schistosome infection is regarded as one of the most important and neglected tropical diseases associated with poor sanitation. Like other living organisms, schistosomes employ multiple biological processes, of which some are regulated by a post-translational modification called Adenosine Diphosphate-ribosylation (ADP-ribosylation), catalyzed by ADP-ribosyltransferases. ADP-ribosylation is the addition of ADP-ribose moieties from Nicotinamide Adenine Dinucleotide (NAD+) to various targets, which include proteins and nucleotides. It is crucial in biological processes such as DNA repair, apoptosis, carbohydrate metabolism and catabolism. In the absence of a vaccine against schistosomiasis, this becomes a promising pathway in the identification of drug targets against various forms of this infection. The tegument of the worm is an encouraging immunogenic target for anti-schistosomal vaccine development. Vaccinology, molecular modeling and target-based drug discovery strategies have been used for years in drug discovery and for vaccine development. In this paper, we outline ADP-ribosylation and other different approaches to drug discovery and vaccine development against schistosomiasis.


Assuntos
ADP-Ribosilação/imunologia , Anti-Helmínticos/farmacologia , Doenças Negligenciadas/terapia , Schistosoma/imunologia , Esquistossomose/terapia , ADP-Ribosilação/efeitos dos fármacos , Animais , Anti-Helmínticos/uso terapêutico , Antígenos de Helmintos/imunologia , Descoberta de Drogas/métodos , Humanos , Doenças Negligenciadas/imunologia , Doenças Negligenciadas/parasitologia , Schistosoma/efeitos dos fármacos , Esquistossomose/imunologia , Esquistossomose/parasitologia , Desenvolvimento de Vacinas/métodos
5.
Am J Trop Med Hyg ; 103(1_Suppl): 1-4, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32400351

RESUMO

The Schistosomiasis Consortium for Operational Research and Evaluation (SCORE), a program focusing on schistosomiasis control in sub-Saharan Africa between 2008 and 2019, investigated ways to improve coverage and efficacy of ongoing chemotherapy programs and concluded that because of continued transmission, mass distribution of praziquantel cannot eliminate the disease without complementary control activities. Schistosomiasis Consortium for Operational Research and Evaluation's activities comprised large-scale, multicountry field studies comparing various mass drug administration strategies and some specific research avenues, such as assessment of high-sensitivity diagnostics, identification of hotspots, quantification of the role of the snail host, predictive modeling, and changes in schistosome population genetics under drug pressure. The discoveries made and the insights gained regarding cost-effective strategies for delivering preventive chemotherapy should assist policy makers to develop guidelines for the control and ultimate elimination of schistosomiasis.


Assuntos
Esquistossomose , África Subsaariana/epidemiologia , Animais , Anti-Helmínticos/uso terapêutico , Quimioprevenção , Análise Custo-Benefício , Reservatórios de Doenças , Humanos , Doenças Negligenciadas/epidemiologia , Doenças Negligenciadas/prevenção & controle , Doenças Negligenciadas/terapia , Praziquantel/uso terapêutico , Schistosoma haematobium , Schistosoma japonicum , Schistosoma mansoni , Esquistossomose/epidemiologia , Esquistossomose/prevenção & controle , Esquistossomose/terapia , Caramujos/parasitologia
6.
Trop Doct ; 50(2): 117-121, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31805832

RESUMO

Cystic echinococcosis (CE), or hydatid disease, is a neglected tropical disease (NTD) afflicting one million people globally. This study aims to elucidate the presentation, treatment and outcomes of the disease in Pakistan. A review of charts of 225 patients (median age = 42.3 years) with CE admitted at Aga Khan Hospital, Karachi during 2007-2017, was carried out. Abdominal pain was present in 34.7% followed by fever in 26.2%. There were 142 (63.1%) cases of hepatic cysts and 55 (24.4%) of pulmonary hydatid cysts. Combined surgical and medical therapy was given to 130 (57.8%) patients. Surgery only was performed in 23 (10.2%) patients, medical therapy only was given to 35 (15.6%) patients, and puncture, aspiration, injection and reaspiration (PAIR) with medical therapy was given to 15 (6.7%) patients. Recurrence occurred in 14 (6.2%) patients and mortality in 7 (3.1%) patients. Owing to its non-specific presentation, a high index of suspicion is required to diagnose and treat CE in a timely manner.


Assuntos
Equinococose/diagnóstico , Equinococose/terapia , Doenças Negligenciadas/diagnóstico , Doenças Negligenciadas/terapia , Adulto , Equinococose/epidemiologia , Feminino , Humanos , Masculino , Doenças Negligenciadas/epidemiologia , Paquistão/epidemiologia , Recidiva , Resultado do Tratamento
7.
Epidemiol Infect ; 147: e294, 2019 10 22.
Artigo em Inglês | MEDLINE | ID: mdl-31637988

RESUMO

Mycetoma is a chronic granulomatous, suppurative and progressive inflammatory disease that usually involves the subcutaneous tissue and bones after traumatic inoculation of the causative organism. In India, actinomycotic mycetoma is prevalent in south India, south-east Rajasthan and Chandigarh, while eumycetoma, which constitutes one third of the total cases, is mainly reported from north India and central Rajasthan. The objective was to determine the epidemiological profile and spectrum of eumycetoma from a tertiary care hospital in Delhi, North India. Thirty cases of eumycetoma were diagnosed by conventional methods of direct microscopy, culture and species-specific sequencing as per standard protocol. The spectrum of fungal pathogens included Exophiala jeanselmei, Madurella mycetomatis, Fusarium solani, Sarocladium kiliense, Acremonium blochii, Aspergillus nidulans, Fusarium incarnatum, Scedosporium apiospermum complex, Curvularia lunata and Medicopsis romeroi. Eumycetoma can be treated with antifungal therapy and needs to be combined with surgery. It has good prognosis if it is timely diagnosed and the correct species identified by culture for targeted therapy of these patients. Black moulds required prolonged therapy. Its low reporting and lack of familiarity may predispose patients to misdiagnosis and consequently delayed treatment. Hence health education and awareness campaign on the national and international level in the mycetoma belt is crucial.


Assuntos
Micetoma/epidemiologia , Doenças Negligenciadas/epidemiologia , Adolescente , Adulto , Feminino , Humanos , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Micetoma/diagnóstico , Micetoma/terapia , Doenças Negligenciadas/diagnóstico , Doenças Negligenciadas/terapia , Prognóstico , Estudos Retrospectivos , Adulto Jovem
9.
J. venom. anim. toxins incl. trop. dis ; 25: e144118, 2019. tab, ilus
Artigo em Inglês | LILACS | ID: biblio-984698

RESUMO

Neglected Tropical Diseases (NTDs) comprise of a group of seventeen infectious conditions endemic in many developing countries. Among these diseases are three of protozoan origin, namely leishmaniasis, Chagas disease, and African trypanosomiasis, caused by the parasites Leishmania spp., Trypanosoma cruzi, and Trypanosoma brucei respectively. These diseases have their own unique challenges which are associated with the development of effective prevention and treatment methods. Collectively, these parasitic diseases cause more deaths worldwide than all other NTDs combined. Moreover, many current therapies for these diseases are limited in their efficacy, possessing harmful or potentially fatal side effects at therapeutic doses. It is therefore imperative that new treatment strategies for these parasitic diseases are developed. Nanoparticulate drug delivery systems have emerged as a promising area of research in the therapy and prevention of NTDs. These delivery systems provide novel mechanisms for targeted drug delivery within the host, maximizing therapeutic effects while minimizing systemic side effects. Currently approved drugs may also be repackaged using these delivery systems, allowing for their potential use in NTDs of protozoan origin. Current research on these novel delivery systems has provided insight into possible indications, with evidence demonstrating their improved ability to specifically target pathogens, penetrate barriers within the host, and reduce toxicity with lower dose regimens. In this review, we will examine current research on these delivery systems, focusing on applications in the treatment of leishmaniasis, Chagas disease, and African trypanosomiasis. Nanoparticulate systems present a unique therapeutic alternative through the repositioning of existing medications and directed drug delivery.(AU)


Assuntos
Humanos , Animais , Sistemas de Liberação de Medicamentos/tendências , Doenças Negligenciadas/prevenção & controle , Doenças Negligenciadas/terapia , Doenças Negligenciadas/epidemiologia , Polímeros , Tripanossomíase Africana , Leishmaniose , Doença de Chagas , Nanocápsulas
10.
Pediatrics ; 142(6)2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30429271

RESUMO

Because of mostly asymptomatic cyst growth and often-neglected nonspecific low-grade symptoms, many cases of cystic echinococcosis (CE) caused by Echinococcus granulosus in the pediatric population are diagnosed at school age, in an advanced and even complicated stage. In 2003, after 5 months of intermittent dull upper-right abdominal pain and nausea, a 13-year-old boy was diagnosed with massive liver CE, with ∼20 round-shaped double-walled medium-sized infective cysts, which permeated the whole liver. Because of their wide distribution across the liver tissue and the risky superficial position of some cysts, liver transplantation emerged as the optimal therapeutic option. Despite being described as only an exceptionally used method for CE, we subjected our patient on 4 occasions to a radiofrequency energy thermoablation (RFT) procedure similar to the one used for malignant neoplasms. In total, 9 superficially situated cysts were initially treated with RFT by using a 14-gauge outer needle and a temperature of 70°C for 8 minutes per cyst, and the remaining cysts were treated with the puncture-aspiration-instillation-reaspiration procedure, along with albendazole (15 mg/kg per day) therapy, for a period of 20 months. After 2 years of follow-up, 4 residual small-sized semisolidified cysts were seen in the liver, and the patient showed no signs of relapse. Although not routinely used, RFT, along with puncture-aspiration-instillation-reaspiration and prolonged albendazole therapy, has shown good tolerability and long-term efficacy in the treatment of multiple infective CE, which could suggest the usefulness of the RFT method beyond salvage situations in pediatric patients.


Assuntos
Equinococose Hepática/diagnóstico por imagem , Equinococose Hepática/terapia , Doenças Negligenciadas/diagnóstico por imagem , Doenças Negligenciadas/terapia , Ablação por Radiofrequência/métodos , Adolescente , Humanos , Masculino , Resultado do Tratamento
11.
PLoS One ; 13(10): e0204723, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30332422

RESUMO

Each year, evidence-based clinical guidelines gain more space in the health professionals' practice and in services organization. Due to the scarcity of scientific publications focused on diseases of poverty, the development of well-founded clinical guidelines becomes more and more important. In view of that, this paper aims to evaluate the quality of Brazilian guidelines for those diseases. The AGREE II method was used to evaluate 16 guidelines for poverty-related diseases (PRD) and 16 guidelines for global diseases whose treatment require high-cost technologies (HCD), with the ultimate aim of comparing the results. It was found that, in general, the guideline development quality standard is higher for the HCD guidelines than for the PRD guidelines, with emphasis on the "rigour of development" (48% and 7%) and "editorial independence" (43% and 1%) domains, respectively, which had the greatest discrepancies. The HCD guidelines showed results close to or above international averages, whereas the PRD guidelines showed lower results in the 6 domains evaluated. It can be concluded that clinical protocol development priorities need some redirecting in order to qualify the guidelines that define the healthcare organization and the care of vulnerable populations.


Assuntos
Custos de Cuidados de Saúde , Pobreza/economia , Guias de Prática Clínica como Assunto/normas , Brasil , Efeitos Psicossociais da Doença , Prática Clínica Baseada em Evidências/economia , Prática Clínica Baseada em Evidências/normas , Humanos , Programas Nacionais de Saúde/economia , Programas Nacionais de Saúde/normas , Doenças Negligenciadas/economia , Doenças Negligenciadas/terapia , Tecnologia de Alto Custo/economia
12.
Ciênc. Saúde Colet. (Impr.) ; 23(7): 2291-2302, jul. 2018. graf
Artigo em Português | LILACS | ID: biblio-952714

RESUMO

Resumo A agenda da saúde global tem apresentado avanços significativos no campo das doenças negligenciadas. Num movimento dinâmico, assume prioridades, estratégias e sentidos diversos ao longo das duas últimas décadas. Entretanto, permanecem desafios importantes em termos geopolítico, econômico, epistemológico e do desenvolvimento social. A designação e localização das doenças negligenciadas em determinados territórios e populações guarda relação, historicamente, com algumas dinâmicas como as de natureza colonial e capitalista. Informam linhas de continuidades na racionalidade de políticas e ações, operadas na assimetria entre povos, instituições e nações. Ainda que tendo incluído positivamente o debate sobre negligência de doenças, argumenta-se a favor de uma agenda da saúde global que assuma e evoque, com mais vigor teórico e metodológico, a dimensão da negligência de corpos e populações, aprofundando o debate com as matrizes biomédica e político-econômica. Significa reforçar o entendimento crítico sobre a histórica vulnerabilização de sujeitos na produção de conhecimento, bem como dar protagonismo e levar em consideração seus modos de andar a vida em diálogo com prioridades e práticas de saúde situadas.


Abstract The global health agenda has made significant strides in neglected diseases. In a dynamic movement, throughout the past two decades, it has assumed different priorities, strategies and meanings. Nevertheless, important challenges persist in terms of geopolitical, economic, epistemological and social development. The designation and location of neglected diseases in certain territorial spaces and populations is historically related to some dynamics such as those of a colonial and capitalistic nature. They reveal continuities in the rationality of policies and actions, pervading asymmetries between peoples, institutions and nations. Although it has positively included the debate on neglected diseases, it can be argued the global agenda of public health has yet to assume and evoke the dimension of neglected bodies and populations with more theoretical and methodological vigor, by intensifying the dialogue between biomedical and political-economic fields. It means reinforcing the critical understanding of the historical vulnerabilities of individuals in the production of knowledge, as well as giving prominence and taking into account their ways of leading their lives in conjunmction with local public health priorities and practices.


Assuntos
Humanos , Saúde Pública , Saúde Global , Doenças Negligenciadas/epidemiologia , Política de Saúde , Política , Doenças Negligenciadas/terapia
14.
J Mycol Med ; 27(3): 312-324, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28847419

RESUMO

Chromoblastomycosis and sporotrichosis are endemic fungal infections of tropical and subtropical regions, including Madagascar. The causal fungi develop in the soil or on plants and infect humans through wounds, either directly (wounding by the plant, through thorns, for example), or through the contact of an existing wound with contaminated soil. For this reason, the lesions predominantly occur on the limbs, and these fungi principally infect people working outside with bare hands and/or feet. The subcutaneous lesions of chromoblastomycosis are initially nodular, subsequently becoming warty, tumoral, cauliflower-like and pruriginous, which promotes dissemination. The chronic nature of the infection and its progression over long periods lead to highly disabling lesions in essentially rural and agricultural populations. The lesions of sporotrichosis are also nodular, but more ulcerous, and they form an extended chain following the route of the lymph vessels. Pus, squamous or skin biopsy specimens are used for the mycological examination of these mycoses. Treatment depends on the severity and form of the lesions and is based on antifungal drugs sometimes combined with physical methods. There has been no study of these infections for more than two decades in Madagascar, despite the large numbers of cases seen by doctors in all parts of the island. The nature, diversity and distribution of the plants responsible for contamination have not been described in Madagascar. In this review, we described these two endemic mycoses in terms of their epidemiological, mycological, clinical and therapeutic characteristics, focusing particularly on Madagascar, which is one of the leading foci of these two infections worldwide.


Assuntos
Cromoblastomicose/epidemiologia , Doenças Endêmicas/estatística & dados numéricos , Doenças Negligenciadas/epidemiologia , Esporotricose/epidemiologia , Antifúngicos/uso terapêutico , Cromoblastomicose/patologia , Cromoblastomicose/terapia , Doenças Endêmicas/prevenção & controle , Humanos , Madagáscar/epidemiologia , Doenças Negligenciadas/terapia , Esporotricose/patologia , Esporotricose/terapia , Infecção dos Ferimentos/epidemiologia , Infecção dos Ferimentos/microbiologia
15.
World J Surg ; 41(2): 381-385, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27541030

RESUMO

OBJECT: The massive typhoon Haiyan (Yolanda) ripped across the central Philippines on November 8, 2013, and damaged infrastructure including hospitals. The Israeli Defense Forces field hospital was directed by the Philippine authorities to Bogo City in the northern part of the island of Cebu, to assist the damaged local hospital. Hundreds of patients with neglected diseases sought for medical treatment which was merely out of reach for them. Our ethical dilemmas were whether to intervene, when the treatment we could offer was not the best possible. METHODS: Each patient had an electronic medical record that included diagnosis, management and aftercare instructions. We retrospectively reviewed all charts of patients. RESULTS: Over 200 patients presented with neglected chronic diseases (tuberculosis, goiter, hypertension and diabetes). We limited our intervention to extreme values of glucose and blood pressure. We had started anti-tuberculosis medications, hoping that the patients will have an option to continue treatment. We examined 85 patients with a presumed diagnosis of malignancy. Without histopathology and advanced imaging modality, we performed palliative operations on three patients. Eighteen patients presented with inguinal hernia. We performed pure tissue repair on seven patients with large symptomatic hernias. We examined 12 children with cleft lip/palate and transferred two of them to Israel. We operated on one child with bilateral club feet. Out of 37 patients with pterygium, our ophthalmologist repaired the nine patients with the most severe vision disturbance. CONCLUSION: Medical delegations to disaster areas should prepare a plan and appropriate measures to deal with non-urgent diseases.


Assuntos
Área Carente de Assistência Médica , Unidades Móveis de Saúde , Doenças Negligenciadas/terapia , Áreas de Pobreza , Procedimentos Cirúrgicos Operatórios/estatística & dados numéricos , Criança , Doença Crônica/epidemiologia , Doença Crônica/terapia , Tempestades Ciclônicas , Desastres , Feminino , Humanos , Doenças Negligenciadas/epidemiologia , Filipinas/epidemiologia , Estudos Retrospectivos , Procedimentos Cirúrgicos Operatórios/ética
16.
Acta toxicol. argent ; 24(3): 173-179, dic. 2016. tab
Artigo em Espanhol | LILACS | ID: biblio-837863

RESUMO

As doenças parasitárias, também chamadas de “doenças negligenciadas”, continuam sendo uma grande dificuldade para o desenvolvimento social e econômico dos países mais pobres. Podemos citar como exemplo dessas doenças, a leishmaniose e a doença de Chagas. A leishmaniose é causada por parasitas do gênero Leishmania e afeta cerca de 12 milhões de pessoas. A doença de Chagas, causada pelo protozoário Trypanosoma cruzi, causa aproximadamente 50.000 mortes por ano. Os fármacos disponíveis para o tratamento dessas doenças são altamente tóxicos, sendo este um dos motivos que leva à busca por drogas eficazes e seguras para seus tratamentos. As folhas da Annona squamosa, espécie da família Annonaceae, já foram descritas na literatura por suas atividades hepatoprotetora, antiparasitária, pesticida e antimicrobiana. Nesse estudo avaliamos a atividade anti-leishmania e tripanocida do extrato etanólico das folhas de Annona squamosa L. (EEAS) em formas promastigota do parasita Leishmania braziliensis e Leishmania infantum e epimastigota de Trypanosoma cruzi, além de avaliar a atividade citotóxica em fibroblasto. Os resultados demonstram que o extrato apresentou uma melhor atividade contra Leishmania infantum e Leishmania brasiliensis quando comparados com Trypanosoma cruzi; e que apresentou uma maior toxicidade nas concentrações de 500 e 1000 μg/ml, com mortalidade dos fibroblastos de aproximadamente 85% e 100%, respectivamente. Esse estudo aponta para uma perspectiva terapêutica alternativa que se mostrou eficaz frente aos parasitas aqui estudados, exceto a forma epimastigota de Trypanosoma cruzi. Com relação aos testes de citotoxicidade fazem-se necessários novos testes, uma vez que apresentou um alto nível de toxicidade, viabilizando assim futuros ensaios in vivo.


The parasitic diseases, also calls by “neglected diseases”, continue being a major difficulty for the social and economic development of the poorest countries. We can cite as an example of these diseases, the leishmaniasis and the Chagas disease. Leishmaniasis is caused by parasites of the genus Leishmania and affects about 12 million people. The Chagas disease, caused by the protozoan Trypanosoma cruzi, causes approximately 50,000 deaths per year. The drugs available for the treatment of these diseases are highly toxic, being this one of the reasons that leads to the search for effective and safe drugs for their treatments. The leaves of the Annona squamosa, species of the family Annonaceae, have already been described in the literature by their hepatoprotective activities, antiparasitic, pesticide and antimicrobial. In this study we assessed the activity tripanocidal and antileishmania of ethanolic extract from the leaves of Annona squamosa L. (EEAS) in promastigota forms of the parasite Leishmania braziliensis and Leishmania infantum and epimastigota of Trypanosoma cruzi, in addition to evaluating the cytotoxic activity in fibroblasts. The results demonstrate that the extract presented a better activity against Leishmania infantum and Leishmania brasiliensis when compared with Trypanosoma cruzi; and which presented a greater toxicity at concentrations of 500 and 1000 μg/ml, with mortality of fibroblasts of approximately 85% and 100%, respectively. This study points to an alternative therapeutic perspective that showed effective against the parasites here studied, except the epimastigota form of Trypanosoma cruzi. With relation to cytotoxicity tests are required new tests, once presented a high level of toxicity, thus enabling future in vivo assays.


Assuntos
Humanos , Annona/toxicidade , Doença de Chagas/epidemiologia , Doença de Chagas/terapia , Estudos de Avaliação como Assunto , Leishmaniose/epidemiologia , Leishmaniose/terapia , Fitoterapia , Extratos Vegetais/uso terapêutico , Annonaceae , Produtos Biológicos/uso terapêutico , Doenças Negligenciadas/epidemiologia , Doenças Negligenciadas/terapia , Preparações de Plantas/uso terapêutico
17.
Rev. Assoc. Med. Bras. (1992) ; 62(5): 458-467, Sept.-Oct. 2016. graf
Artigo em Inglês | LILACS | ID: lil-794907

RESUMO

SUMMARY Objective: This review aims to update knowledge about Ebola virus disease (EVD) and recent advances in its diagnosis, treatment and prevention. Method: A literature review was performed using the following databases: ISI Web of Knowledge, PubMed, IRIS, Scopus and the websites of the CDC and the WHO. Additionally, we have included articles and reports referenced in the basic literature search, and news that were considered relevant. Results: The Ebola virus, endemic in some parts of Africa, is responsible for a severe form of hemorrhagic fever in humans; bats are probably its natural reservoir. It is an extremely virulent virus and easily transmitted by bodily fluids. EVD's complex pathophysiology, characterized by immunosuppression as well as stimulation of an intense inflammatory response, results in a syndrome similar to septic shock. The diagnosis is difficult due to the initial symptoms that mimic other diseases. Despite the high mortality rates that can amount to 90%, a prophylaxis (chemical or vaccine) or effective treatment does not exist. Two vaccines and experimental therapies are being developed for the prevention and treatment of EVD. Conclusion: Although the virus is known for about 40 years, the lack of knowledge obtained and the disinterest of government authorities in the countries involved justify the state of emergency currently exists regarding this infectious agent. Only the coordination of multiple entities and the effective commitment of the international community will facilitate the control and effective prevention of EVD.


RESUMO Objetivo: esta revisão tem como objetivo atualizar os conhecimentos sobre a doença do vírus ébola (DVE) e sobre os recentes avanços nos métodos de diagnóstico, tratamento e prevenção. Método: foi realizada uma revisão de literatura, utilizando as seguintes bases de dados: ISI Web of Knowledge, PubMed, IRIS, Scopus e os sites do Centers for Disease Control and Prevention (CDC) e da Organização Mundial da Saúde (OMS). Adicionalmente, foram incluídos artigos e relatórios referenciados na pesquisa bibliográfica de base e notícias consideradas relevantes. Resultados: o vírus ébola, endêmico de algumas regiões da África, é responsável por uma forma grave de febre hemorrágica no homem, e os morcegos são provavelmente o seu reservatório natural. É um vírus extremamente virulento e de fácil transmissão pelos fluidos corporais. A complexa fisiopatologia da doença, caracterizada pela imunossupressão e pelo estímulo a uma intensa resposta inflamatória, resulta em uma síndrome semelhante ao choque séptico. O seu diagnóstico é difícil, por causa da sintomatologia inicial, que mimetiza outras doenças. Apesar das altas taxas de mortalidade, que podem alcançar os 90%, não existe profilaxia (química ou vacinal) ou tratamento eficaz. Encontram-se em desenvolvimento duas vacinas e terapias experimentais para a prevenção e o tratamento da DVE. Conclusão: apesar de ser um vírus conhecido há cerca de 40 anos, o escasso conhecimento obtido e o desinteresse das entidades governamentais de países envolvidos justificam o estado de emergência que se vive atualmente em relação a esse agente infeccioso. A coordenação por múltiplas entidades e o empenho efetivo da comunidade internacional facilitarão o seu controle e a prevenção eficaz.


Assuntos
Humanos , Doença pelo Vírus Ebola/diagnóstico , Doença pelo Vírus Ebola/terapia , Doenças Negligenciadas/diagnóstico , Doenças Negligenciadas/terapia , Saúde Global , Surtos de Doenças , Doença pelo Vírus Ebola/transmissão , Vacinas contra Ebola/uso terapêutico , Ebolavirus/fisiologia
18.
Clin Microbiol Infect ; 22(8): 688-94, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27109491

RESUMO

The term 'entomophthoramycosis' classically refers to infections caused by members of the order Entomophthorales. A new subphylum, Entomophthoramycota, has been created to include Basidiobolomycetes, Neozygitomycetes and Entomophthoramycetes. Basidiobolomycetes encompass Basidiobolus spp., while the Entomophthoramycetes include Conidiobolus spp. Conidiobolus spp. characteristically cause rhinofacial entomophthoramycosis in apparently immunocompetent hosts. Conidiobolus spp. may also cause disseminated infection in immunocompromised patients. Basidiobolus spp. more typically cause subcutaneous entomophthoramycosis of the limbs, buttocks, back and thorax in immunocompetent patients. While once considered to be rare, there is an increasing number of reported cases of gastrointestinal infection caused by Basidiobolus spp. worldwide in countries such as United States, Thailand, Australia, Iran, Egypt and Saudi Arabia. These cases have clinical presentations similar to those of inflammatory bowel diseases, particularly Crohn's disease. Retroperitoneal, pulmonary, nasal and disseminated basidiobolomycosis have also been reported. Histology of entomophthoramycosis may reveal the Splendore-Hoeppli phenomenon. Culture of infected tissue remains the definitive method of laboratory diagnosis. However, molecular methods with specific DNA probes and panfungal primers, as well as real time PCR, are increasingly used to detect and identify these organisms in tissue. Treatment largely consists of therapy with antifungal triazoles. Surgery plays a selective role in the management of entomophthoramycosis, depending upon location, organism and extent of the infection.


Assuntos
Doenças Negligenciadas/microbiologia , Zigomicose/microbiologia , Animais , Terapia Combinada , Microbiologia Ambiental , Fungos/classificação , Fungos/efeitos dos fármacos , Fungos/genética , Fungos/isolamento & purificação , Interações Hospedeiro-Patógeno , Humanos , Doenças Negligenciadas/diagnóstico , Doenças Negligenciadas/epidemiologia , Doenças Negligenciadas/terapia , Fenótipo , Resultado do Tratamento , Medicina Tropical , Zigomicose/diagnóstico , Zigomicose/epidemiologia , Zigomicose/terapia
19.
Rev Inst Med Trop Sao Paulo ; 57 Suppl 19: 46-50, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26465369

RESUMO

Chromoblastomycosis (CMB) is a chronic fungal infection of the skin and the subcutaneous tissue caused by a transcutaneous traumatic inoculation of a specific group of dematiaceous fungi occurring mainly in tropical and subtropical zones worldwide. If not diagnosed at early stages, patients with CBM require long term therapy with systemic antifungals, sometimes associated with physical methods. Unlike other neglected endemic mycoses, comparative clinical trials have not been performed for this disease. Nowadays, therapy is based on a few open trials and on expert opinion. Itraconazole either as monotherapy or associated with other drugs, or with physical methods, is widely used. Recently, photodynamic therapy has been successfully employed in combination with antifungals in patients presenting with CBM. In the present revision the most used therapeutic options against CBM are reviewed as well as the several factors that may have impact on the patient's outcome.


Assuntos
Cromoblastomicose/terapia , Doenças Negligenciadas/terapia , Antifúngicos/administração & dosagem , Cromoblastomicose/epidemiologia , Terapia Combinada , Criocirurgia , Humanos , Doenças Negligenciadas/epidemiologia , Fotoquimioterapia , Fármacos Fotossensibilizantes/administração & dosagem
20.
Rev. Inst. Med. Trop. Säo Paulo ; 57(supl.19): 46-50, Sept. 2015. tab, graf
Artigo em Inglês | LILACS | ID: lil-762055

RESUMO

SUMMARYChromoblastomycosis (CMB) is a chronic fungal infection of the skin and the subcutaneous tissue caused by a transcutaneous traumatic inoculation of a specific group of dematiaceous fungi occurring mainly in tropical and subtropical zones worldwide. If not diagnosed at early stages, patients with CBM require long term therapy with systemic antifungals, sometimes associated with physical methods. Unlike other neglected endemic mycoses, comparative clinical trials have not been performed for this disease. Nowadays, therapy is based on a few open trials and on expert opinion. Itraconazole either as monotherapy or associated with other drugs, or with physical methods, is widely used. Recently, photodynamic therapy has been successfully employed in combination with antifungals in patients presenting with CBM. In the present revision the most used therapeutic options against CBM are reviewed as well as the several factors that may have impact on the patient's outcome.


RESUMOCromoblastomicose (CMB) é uma infecção fúngica crônica da pele e tecido subcutâneo causada pela inoculação transcutânea traumática de um grupo específico de fungos dermatiáceos que ocorrem principalmente em zonas tropicais e subtropicais do mundo. Quando não são diagnosticados nas fases iniciais, pacientes com CBM necessitam de tratamentos prolongados com antifúngicos sistêmicos, por vezes associados a métodos físicos. Diferentemente de outras micoses endêmicas negligenciadas, não foram realizados ensaios clínicos comparativos para esta doença. Atualmente a terapia é baseada em alguns poucos ensaios abertos e em opiniões de especialistas. Itraconazol é amplamente utilizado como monoterapia ou em associação com outras drogas, ou com métodos físicos. Recentemente, a terapia fotodinâmica foi empregada com sucesso combinada a antifúngicos em pacientes com CBM. Neste manuscrito as opções terapêuticas mais utilizadas contra CBM foram revistas, assim como os diversos fatores que podem influenciar a evolução dos pacientes.


Assuntos
Humanos , Cromoblastomicose/terapia , Doenças Negligenciadas/terapia , Antifúngicos/administração & dosagem , Terapia Combinada , Criocirurgia , Cromoblastomicose/epidemiologia , Doenças Negligenciadas/epidemiologia , Fotoquimioterapia , Fármacos Fotossensibilizantes/administração & dosagem
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