Benthic estuarine communities in Brazil: moving forward to long term studies to assess climate change impacts

Estuaries are unique coastal ecosystems that sustain and provide essential ecological services for mankind. Estuarine ecosystems include a variety of habitats with their own sediment-fauna dynamics, all of them globally undergoing alteration or threatened by human activities. Mangrove forests, saltmarshes, tidal flats and other confined estuarine systems are under increasing stress due to human activities leading to habitat and species loss. Combined changes in estuarine hydromorphology and in climate pose severe threats to estuarine ecosystems on a global scale. The ReBentos network is the first integrated attempt in Brazil to monitor estuarine changes in the long term to detect and assess the effects of global warming. This paper is an initial effort of ReBentos to review current knowledge on benthic estuarine ecology in Brazil. We herein present and synthesize all published work on Brazilian estuaries that has focused on the description of benthic communities and related ecological processes. We then use current data on Brazilian estuaries and present recommendations for future studies to address climate change effects, suggesting trends for possible future research and stressing the need for long-term datasets and international partnerships.Estuários são ecossistemas costeiros que sustentam uma ampla variedade de serviços ambientais para a humanidade. Estuários abrigam muitos ambientes bentônicos com características específicas e seriamente ameaçados globalmente. Manguezais, marismas e planícies de maré são amplamente impactados por poluentes domésticos e industriais, por atividades comerciais que levam à perda de habitat e pela sobrepesca. Os diversos impactos locais, associados a mudanças regionais e globais na hidromorfologia estuarina e potenciais efeitos de mudanças climáticas, colocam sérias ameaças a ecossistemas estuarinos. A rede Bentos foi criada para estudar o efeito de mudanças no clima em ecossistemas bentônicos costeiros brasileiros. Este trabalho faz parte dos esforços iniciais do Grupo de Trabalho Estuários em rever o conhecimento sobre comunidades bentônicas estuarinas no Brasil. Aqui apresentamos uma breve revisão crítica sobre os trabalhos realizados objetivando o estudo, em nível de comunidades, do bentos estuarino e processos ecológicos associados. A partir do cenário atual, realizamos recomendações de estudo para responder questões científicas sobre efeitos de mudanças climáticas em comunidades bentônicas estuarinas, e enfatizamos a necessidade de bases de dados contínuas e de longa duração e o estabelecimento de parcerias internacionais com foco específico nos estuários brasileiros

Duas décadas de pesquisa em tuberculose no Brasil: estado da arte das publicações científicas

The trends of scientific articles about tuberculosis in Brazil published between 1986 and 2006 were analyzed. This analysis included Capes database-indexed dissertations and theses and papers indexed in Medline and SciELO. Papers containing the word "tuberculosis" and authors affiliated to Brazilian institutions were included in the assessment. The analysis showed initially case report and review publications, and later it shifted to original articles on science, technology and innovation. These changes may reflect the strengthening of scientific research activities and new attitudes regarding tuberculosis research objectives in academic institutions in recent years. Although many theses used qualitative methodology, few qualitative publications were found, possibly because of the quantitative orientation of many journals. Qualitative versus quantitative research and education versus research-oriented publications are discussed, together with public policies and strategies to include research as a tool to control diseases. The use of the same methodology is suggested to assess the trends in research on other neglected diseases.A tendência das publicações brasileiras em tuberculose referente ao período de foi analisada no período 1986 a 2006. Esta análise incluiu dissertações e teses registradas da Capes e artigos indexados na base de dados Medline e no SciELO. A seleção das publicações foi realizada por busca pela palavra "tuberculose" e instituições brasileiras a que se afiliavam os autores. A análise mostrou inicialmente publicações do tipo relatos de caso e revisões, e posteriormente artigos originais em ciência, tecnologia e inovação científica. Estas mudanças podem refletir o incremento das atividades de pesquisa nas instituições acadêmicas e novas atitudes relativas aos objetivos da pesquisa em tuberculose nos últimos anos. Embora muitas teses tenham utilizado metodologia qualitativa, poucos artigos nessa modalidade foram encontrados, possivelmente refletindo a orientação quantitativa das revistas. Discutem-se pesquisa quantitativa versus qualitativa e educação versus pesquisa, assim como políticas públicas e estratégias para incluir a pesquisa como instrumento de controle das doenças. Sugere-se a utilização da mesma metodologia para analisar as tendências da pesquisa em outras doenças negligenciadas

Neonatal screening for MPS disorders in Latin America : a survey of pilot initiatives

Newborn screening enables the diagnosis of treatable disorders at the early stages, and because of its countless benefits, conditions have been continuously added to screening panels, allowing early intervention, aiming for the prevention of irreversible manifestations and even premature death. Mucopolysaccharidoses (MPS) are lysosomal storage disorders than can benefit from an early diagnosis, and thus are being recommended for newborn screening. They are multisystemic progressive disorders, with treatment options already available for several MPS types. MPS I was the first MPS disorder enrolled in the newborn screening (NBS) panel in the USA and a few other countries, and other MPS types are expected to be added. Very few studies about NBS for MPS in Latin America have been published so far. In this review, we report the results of pilot studies performed in Mexico and Brazil using different methodologies: tandem mass spectrometry, molecular analysis, digital microfluidics, and fluorimetry. These experiences are important to report and discuss, as we expect to have several MPS types added to NBS panels shortly. This addition will enable timely diagnosis of MPS, avoiding the long diagnostic odyssey that is part of the current natural history of this group of diseases, and leading to a better outcome for the affected patients

Immunodominant Antigens of Leishmania chagasi Associated with Protection against Human Visceral Leishmaniasis

One of the most striking features of infection by Leishmania chagasi is that infection leads to a spectrum of clinical outcomes ranging from asymptomatic infection to active disease. The existence of asymptomatic infected people has served as an incentive to believe that an effective vaccine is possible, but unfortunately no successful immunological characterization of such cases was obtained. Patients recovered from visceral leishmaniasis show a similar immunological profile to asymptomatic infected individuals and both exhibit a strong cell-mediated immune response against Leishmania antigens and are resistant to disease. Since the past decade several approaches were undertaken to try to shed light on the immunological profile associated with such “resistance” to infections, notwithstanding antigenic recognition profile associated to resistance to infection was not successfully explored. In the present manuscript we describe a specific IgG recognizing pattern associated with resistant individuals (asymptomatic infected people and recovery patients to visceral leishmaniasis). These data highlight the possibility of using specific proteins in serological tests for the identification of asymptomatic infected individuals

Oswaldo Costa, Antropofagia, y la crítica caníbal de la modernidad colonial

Oswaldo Costa was a key member of the Brazilian modernist Antropofagia (Anthropophagy) movement of the late 1920s, yet he has been largely forgotten by critics and marginalized from national cultural history. Costa articulated —as no other member of the movement did, including his famous leader Oswald de Andrade— an Antropofagia intellectually engaged in what we call a cannibal critique of colonial modernity and Occidentalism. Costa’s Antropofagia cannibalized the historical archive, reading against the grain of a triumphant Western imperial history. Throughout his contributions to the Revista de Antropofagia, he questioned Brazil’s cultural allegiance to Europe, pointed out the existence of asynchronous temporalities within Brazil, and defied Eurocentric notions of civilization and progress that ideologically structure Brazilian nationalism in the ninetieth and twentieth centuries. He also enacted an anthropophagous re-reading of Brazilian historiography against its celebration of colonialism and proposed the necessity of a cultural decolonization. This article analyzes Costa’s principal contributions to Antropofagia and rescues his hitherto overlooked countercolonial thought from the oblivion of collective forgetting. Moreover, it examines Costa’s significant view of Brazilian modernity as a perfidious armistice with other barbarous temporalities, and of the Westernization of Brazil as a deceptive appearance that hides ever-present colonial antagonisms.Oswaldo Costa fue un miembro fundamental del movimiento modernista Antropofagia de finales de la década de 1920. Pese al olvido crítico de su obra y a su exclusión de la historia cultural brasileña, Costa articuló —como acaso ningún otro miembro del movimiento, incluyendo a su famoso líder Oswald de Andrade— una Antropofagia-otra, intelectualmente trabada en lo que denominamos una crítica caníbal de la modernidad colonial y del Occidentalismo. A diferencia de la mayoría de sus contemporáneos, Costa acometió la lectura digestiva y a contrapelo del archivo nacional y de la historia triunfal imperial y occidentalista sobre la que descansaba el imaginario nacional. En sus contribuciones a la Revista de Antropofagia, Costa cuestionó la pertenencia cultural de Brasil a Europa y a Occidente, señaló la existencia de temporalidades asincrónicas en el Brasil, y desafió las nociones eurocéntricas de civilización y progreso que informaron ideológicamente el nacionalismo brasileño de los siglos XIX y XX. Costa también adelantó una relectura antropofágica de la historiografía brasileña contra su celebración del colonialismo y propuso la necesidad de una descolonización cultural. Este artículo analiza las principales contribuciones de Costa a Antropofagia y rescata su —injustamente olvidado— pensamiento contra-colonial. Además, examina su concepción de la modernidad brasileña como un armisticio pérfido entre Occidente y otras temporalidades bárbaras y su visión de la occidentalización de Brasil como una apariencia engañosa que escondería antagonismos coloniales irresueltos

Study protocol for the multicentre cohorts of Zika virus infection in pregnant women, infants, and acute clinical cases in Latin America and the Caribbean: The ZIKAlliance consortium

Background: The European Commission (EC) Horizon 2020 (H2020)-funded ZIKAlliance Consortium designed a multicentre study including pregnant women (PW), children (CH) and natural history (NH) cohorts. Clinical sites were selected over a wide geographic range within Latin America and the Caribbean, taking into account the dynamic course of the ZIKV epidemic. Methods: Recruitment to the PW cohort will take place in antenatal care clinics. PW will be enrolled regardless of symptoms and followed over the course of pregnancy, approximately every 4 weeks. PW will be revisited at delivery (or after miscarriage/abortion) to assess birth outcomes, including microcephaly and other congenital abnormalities according to the evolving definition of congenital Zika syndrome (CZS). After birth, children will be followed for 2 years in the CH cohort. Follow-up visits are scheduled at ages 1-3, 4-6, 12, and 24 months to assess neurocognitive and developmental milestones. In addition, a NH cohort for the characterization of symptomatic rash/fever illness was designed, including follow-up to capture persisting health problems. Blood, urine, and other biological materials will be collected, and tested for ZIKV and other relevant arboviral diseases (dengue, chikungunya, yellow fever) using RT-PCR or serological methods. A virtual, decentralized biobank will be created. Reciprocal clinical monitoring has been established between partner sites. Substudies of ZIKV seroprevalence, transmissio