Following the footsteps of Burmeister's leaf frog (Phyllomedusa burmeisteri) in the Atlantic forest of Brazil.

Amphibians are organisms which mainly have a biphasic life cycle. When at the larval stage, their habitat is generally aquatic, and when adults, they become terrestrial. Pond-breeding amphibians are sensitive to some disturbances in their environment which lead to the decline of a population. The interactions between the species and their environment are performed through movement. Movement ecology combines and explains the movement data of organisms with biotic and abiotic factors and because of this, knowing the movement of these creatures is of great ecological importance. We used the spool-and-line methodology in individuals of the treefrog Phyllomedusa burmeisteri, at the Reserva Ecologica Michelin, located in the southern region of Bahia in Brazil to study their movement patterns in different environments inside and outside of the forest. We monitored 19 P. burmeisteri individuals that presented a mean total movement distance of 2160.76 cm (S.D. 1152.42). We found no significant difference in the trajectories of individuals in forested and open areas, as well as a positive relationship between the distances individuals moved and their weight only in forested areas. no relationship between distance and weight of these individuals. We observed that individuals followed non-linear paths and the number of steps from one place to another varied among individuals. Our movement ecology data allows us to answer questions about short-term movement patterns of Phyllomedusa burmeisteri. This is the first step to start understanding the spatial cognition of treefrogs from the Atlantic Forest and to fill gaps about life habits of these frogs. Information on the movement patterns of a species, as well as its home range can help to create conservation strategies, regarding the creation or delimitation of protected areas, for example.

500 Consecutive Liver Transplants: The Outcomes of a New Transplantation Program in the Middle West of Brazil.

INTRODUCTION: Liver transplantation is the standard treatment for end-stage liver disease. Brazil holds the third highest number of liver transplants performed per year, but center maldistribution results in high discrepancies in accessing this treatment. In 2012, an interstate partnership successfully implemented a new liver transplantation program in the middle west of Brazil. Here, we report the results of the first 500 liver transplants performed in this new program and discuss the impacts of a new transplant center in regional transplantation dynamics. METHODS: We reviewed data from the first 500 consecutive deceased donor liver transplants performed in the new program during an 8-year period. We analyzed data on patients' clinical and demographic profiles, postoperative outcomes, and graft and recipient survival rates. Univariate survival analysis was conducted using log-rank tests to compare the groups. RESULTS: Almost half (48%) of the procured organs and 40% of the recipients transplanted in our center were from outside our state. Recipient 30-day mortality was 9%. Overall recipient survival at 1 year and 5 years was 85% and 80%, respectively. Mortality was significantly associated with higher Model for End-Stage Liver Disease (P < .001) but not with the presence of hepatocellular carcinoma (P = .795). DISCUSSION: The new transplantation program treated patients from different regions of Brazil and became the reference center in liver transplantation for the middle west region. Despite the recent implementation, our outcomes are comparable to experienced centers around the world. This model can inspire the creation of new transplantation programs aiming to democratize access to liver transplantation nationwide.

Amphibians and reptiles of Parque Nacional da Serra das Lontras: an important center of endemism within the Atlantic Forest in southern Bahia, Brazil.

Information gaps about species distribution hamper the evaluation of conservation status and decisions on biodiversity conservation, affecting to a greater extent, areas with high species richness and endemism. In this context, biological inventories are an important tool to fill these gaps by providing data on the composition, richness, and abundance of species in each locality. The Parque Nacional da Serra das Lontras (PNSL) protects various mountain range just up 1000 m. in altitude, and, together with other conservation units, forms an ecological corridor in the southern part of the state of Bahia, within the Atlantic Forest hotspot. We conducted systematic samplings on transects, and opportunistic records in ponds and streams, in order to record amphibian and reptile species in the PNSL. We complement the sampling with the information available in the literature and in scientific collections. A total of 100 species (49 amphibians and 51 reptiles) was recorded, 53 of them endemic to the Atlantic Forest, 13 to the state of Bahia, and two known only from the PNSL. Hylidae was the most diverse family of amphibians (22 spp.) and Colubridae of reptiles (33 spp.). New information on the distribution and natural history of these species is provided, many of which have not yet been assessed by the IUCN while others have already been categorized as at risk of extinction at the regional level. Results confirm the high species richness and rates of endemism in southern Bahia and highlight the importance of protecting high altitude areas for the preservation of evolutionary and ecological processes within the Atlantic Forest.

Macrophage Polarization in Leprosy-HIV Co-infected Patients.

In HIV-infected individuals, a paradoxical clinical deterioration may occur in preexisting leprosy when highly active antiretroviral therapy (HAART)-associated reversal reaction (RR) develops. Leprosy-HIV co-infected patients during HAART may present a more severe form of the disease (RR/HIV), but the immune mechanisms related to the pathogenesis of leprosy-HIV co-infection remain unknown. Although the adaptive immune responses have been extensively studied in leprosy-HIV co-infected individuals, recent studies have described that innate immune cells may drive the overall immune responses to mycobacterial antigens. Monocytes are critical to the innate immune system and play an important role in several inflammatory conditions associated with chronic infections. In leprosy, different tissue macrophage phenotypes have been associated with the different clinical forms of the disease, but it is not clear how HIV infection modulates the phenotype of innate immune cells (monocytes or macrophages) during leprosy. In the present study, we investigated the phenotype of monocytes and macrophages in leprosy-HIV co-infected individuals, with or without RR. We did not observe differences between the monocyte profiles in the studied groups; however, analysis of gene expression within the skin lesion cells revealed that the RR/HIV group presents a higher expression of macrophage scavenger receptor 1 (MRS1), CD209 molecule (CD209), vascular endothelial growth factor (VEGF), arginase 2 (ARG2), and peroxisome proliferator-activated receptor gamma (PPARG) when compared with the RR group. Our data suggest that different phenotypes of tissue macrophages found in the skin from RR and RR/HIV patients could differentially contribute to the progression of leprosy.

Assessing pathogenic mutations in dental follicles as an attempt to identify early events in odontogenic tumours tumourigenesis.

OBJECTIVE: Driver oncogenic mutations have been reported in several benign neoplasms. While ameloblastomas show BRAF p.V600E mutations, adenomatoid odontogenic tumours harbour either KRAS p.G12R or p.G12 V. The lack of understanding of the core molecular changes involved in tumour initiation and progression represents a critical barrier to developing new strategies for cancer detection and prevention. Considering the fact that ameloblastoma and adenomatoid odontogenic tumours can originate from dental follicles, we hypothesized that the BRAF and KRAS mutations might be early events in odontogenic tumours tumourigenesis. We aimed to assess BRAF and KRAS mutations in dental follicles associated with asymptomatic impacted teeth. DESIGN: Forty-eight dental follicles containing odontogenic epithelial remnants were included in the study. As ameloblastomas most often occur in the posterior mandible and adenomatoid odontogenic tumours have a predilection for the anterior jaws, we assessed by allele-specific qPCR the presence of BRAF p.V600E in 32 dental follicles associated with impacted 3rd mandibular molar teeth and KRAS p.G12 V and KRAS p.G12R mutations in 16 dental follicle specimens obtained from around impacted anterior teeth. Sanger sequencing was used as an additional method. RESULTS: None of the dental follicle cases tested positive for the mutations. CONCLUSION: In conclusion, we tried to detect the early genetic events associated with odontogenic tumours development in dental follicles, but we were unable to showcase that BRAF p.V600E and KRAS p.G12R or p.G12 V mutations are the early genetic events associated with odontogenic tumours development.

Avaliação das alterações moleculares dos folículos dentários em relação à idade cronológica / Evaluation of molecular changes in dental follicles in relation to chronological age

O Folículo dental (FD) é um tecido de origem ectomesenquimal. Aproximadamente 57% dos adultos apresentam terceiro molar mandibular impactado, sendo esse elemento dentário com maior prevalência de impactação dental. Há maior incidência de alterações patológicas em indivíduos mais velhos em comparação com indivíduos mais jovens. Porém os mecanismos envolvidos na formação de cistos e tumores relacionados aos FDs não estão bem elucidados, e, por isso, alguns autores defendem a extração profilática dos terceiros molares inclusos. Durante o envelhecimento cronológico, padrões epigenéticos mudam, e um padrão de hipometilação global do DNA pode ser encontrado concomitantemente com hipermetilação de vários genes supressores tumorais. A metilação do DNA é um dos mecanismos que regula as vias de sinalização celular, como a da MAPK/ERK, que atuam no controle da proliferação e diferenciação. Alguns pesquisadores descobriram um aumento na atividade do ERK 1/2 durante o processo de envelhecimento, o que poderia contribuir para a ocorrência de doenças, e a sua desregulação está envolvida na indução e na progressão de doenças como câncer e doenças autoimunes. Portanto, o presente estudo teve por objetivo avaliar se os FDs de indivíduos jovens e indivíduos mais velhos apresentam diferença no perfil de metilação global do DNA, e avaliar o padrão de imunoexpressão da forma fosforilada ERK1/2 (pERK1/2) nos FDs. A metilação global do DNA (percentual de 5mC) e a hidroximetilação (5hmC) foram avaliadas por ELISA em 59 amostras. Testamos a correlação entre o conteúdo de 5mC e 5hmC e a correlação de cada um com a idade dos pacientes. Examinamos a imunorreatividade do pERK 1/2 para avaliar a ativação das vias MAPK/ERK em 46 amostras de FD. As amostras apresentaram variação entre 13 e 31 anos de idade. Os resultados mostraram uma relação inversamente proporcional entre o conteúdo de 5hmC e idade até os 19 anos, portanto o percentual de 5hmC nos FDs tende a diminuir linearmente com o envelhecimento. O estudo imuno-histoquímico mostrou um padrão variável de imunoexpressão de pERK1/2 com 46% (21/46) das amostras exibindo menos de 10% de células positivas, enquanto 24% (11/46) das amostrasapresentaram imunopositividade entre 10 e 50% e 30% (14/46) das amostras mais de 50% das células de FD. Não foi observado diferença nas idades entre esses grupos. Em conclusão, nossos resultados sugerem que a hidroximetilação global do DNA possui alteração no seu padrão durante o envelhecimento e que a via de sinalização celular MAPK/ERK está ativa nos FDs.

The dental follicle (DF) is a tissue of ectomesenquimal origin. Approximately 57 % of young adults have impacted third molars, which is the most prevalent impacted tooth. The incidence of pathological changes is greater among older individuals than younger individuals. However, the mechanisms behind the formation of cysts and tumors related to DFs have not been fully clarified and, therefore, some researchers defend the prophylactic extraction of third molars. During chronological aging, epigenetic patterns change and a global DNA hypomethylation pattern can be found concomitantly with hypermethylation of several tumor suppressor genes. DNA methylation is one of the regulators of cell signaling pathways, such as the MAPK/ERK pathway. Some researchers have found an increase in ERK1/2 activity during the aging process, which may contribute to the occurrence of disease, and its dysregulation is involved in the induction and progression of diseases such as cancer and autoimmune diseases. Thus, the aim of the present study was to evaluate whether DFs in young and older individuals differ in terms of global methylation and hydroxymethylation and to evaluate the immunoexpression pattern of phosphorylated ERK1/2. Global DNA methylation (5mC content) and hydroxymethylation (5hmC) were evaluated by ELISA in 59 DF samples We tested the correlation between 5mC and 5hmC content, and the correlation of each with patients' age. We examined ERK1/2 immunoreactivity for the evaluation of the activation of the MAPK pathways in 46 DF samples. Age of patients of the 59 samples of DFs raged from 13 to 31 years. An inversely proportional relation was found between the 5hmC content and age up to 19 years, therefore, the percentage of 5hmC in the DFs tends linearly decrease with aging. The immunohistochemical study showed a variable pattern of immunoexpression of pERK 1/2 with 46% (21/46) of the samples showing less than 10% of positive cells, while 24% (11/46) of the samples showed immunopositivity between 10 and 50% and 30% (14/46) of the samples greater than 50% of the DF cells. There was no difference in age among these groups. In conclusion, our results suggest that the global hydroxymethylation of DNA changes in its pattern during aging and that the MAPK/ERK cell signaling pathway is active in DFs.

Perfil clínico-epidemiológico de pacientes com hanseníase atendidos em hospital universitário no Rio de Janeiro entre 2008 e 2017 / Clinical and epidemiological profile of leprosy patients admitted to a university hospital in Rio de Janeiro between 2008 and 2017

Modelo do estudo: Estudo observacional, longitudinal, retrospectivo e descritivo de uma coorte de pacientes. Objetivo: Descrever o perfil clínico e epidemiológico dos pacientes com diagnóstico de hanseníase, atendidos em um centro de referência no estado do Rio de Janeiro. Metodologia: Foram incluídos todos os pacientes com diagnóstico de hanseníase atendidos no Hospital Universitário Gaffrée e Guinle entre os anos de 2008 a 2017. Os dados foram coletados através da revisão de prontuários e analisados através de estatística descritiva, utilizando-se o software SPSS 22.0 database. Resultados: Um total de 112 pacientes foi incluído no estudo, sendo que 54,5% eram do sexo masculino. A média de idade foi de 49,9 anos, 62,4% eram moradores do município do Rio de Janeiro e 69,9% apresentaram formas clínicas multibacilares da hanseníase. Foi possível avaliar o grau de incapacidade inicial de 36 (32,1%) dos pacientes incluídos. Desses, 25% apresentaram grau de incapacidade inicial II. Durante o tratamento poliquimioterápico, 21 (18,8%) pacientes apresentaram algum efeito colateral, sendo o mais comum a anemia relacionada à dapsona. Cinquenta e nove (52,7%) pacientes apresentaram algum tipo de estado reacional da hanseníase e 10 (8,9%) apresentaram complicações sistêmicas graves durante o acompanhamento. Conclusões: O presente estudo evidenciou um perfil clínico-epidemiológico diferente do descrito na literatura, com uma grande porcentagem de pacientes com grau de incapacidade inicial II, uma alta frequência de estados reacionais e de complicações advindas do curso clínico da doença ou dos tratamentos implementados.(AU)

Introduction: This was an observational, longitudinal, retrospective and descriptive study of a cohort of patients. Objectives: To describe the clinical and epidemiological profile of the patients diagnosed with leprosy admitted to a reference medical center in the State of Rio de Janeiro. Methods: All leprosy patients admitted to the dermatology clinic from the Hospital Universitário Gaffrée and Guinle between 2008 and 2017 were included. Pertinent patients' data were collected through medical charts review. Data were then analyzed through descriptive statistics using SPSS 22.0 software. Results:a total of 112 patients were included in the study. Among them, 54.5% were male, the median age was 49.9 years old, 62.4% were residents in the city of Rio de Janeiro and 69.9% presented multibacillary leprosy clinical forms. We evaluated the initial disability grade of 36 from the 112 included patients, and out of them, 25% had grade II disability. During multidrug therapy, 21 (18.8%) patients presented an adverse effect, which the most common was anemia related to dapsone. Fifty-nine (52.7%) patients presented leprosy reaction and 10 (8.9%) patients presented severe systemic complications during the follow-up. Conclusions: In the present study, it was observed a distinctive clinical and epidemiological leprosy profile. There was a high frequency of grade II initial disability, leprosy reaction and severe clinical complications due to the progression of the disease or as adverse effects of leprosy treatment. (AU)

Protocols for Harmonized Quantification and Noise Reduction in Low-Dose Oncologic 18F-FDG PET/CT Imaging.

Oncologic 18F-FDG PET/CT acquisition and reconstruction protocols need to be optimized for both quantitative and detection tasks. To date, most studies have focused on either quantification or noise, leading to quantitative harmonization guidelines or appropriate noise levels. We developed and evaluated protocols that provide harmonized quantitation with optimal amounts of noise as a function of acquisition parameters and body mass. Methods: Multiple image acquisitions (n = 17) of the International Electrotechnical Commission/National Electrical Manufacturers Association PET image-quality phantom were performed with variable counting statistics. Phantom images were reconstructed with 3-dimensional ordered-subset expectation maximization (OSEM3D) and point-spread function (PSF) for harmonized quantification of the contrast recovery coefficient of the maximum pixel value (CRC max ). The lowest counting statistics that resulted in compliance with European Association of Nuclear Medicine recommendations for CRC max and CRC max variability were used as optimization metrics. Image noise in the liver of 48 typical oncologic 18F-FDG PET/CT studies was analyzed with OSEM3D and PSF harmonized reconstructions. We also evaluated 164 additional 18F-FDG PET/CT reconstructed list-mode images to derive analytic expressions that predict image quality and noise variability. Phantom-to-subject translational analysis was used to derive optimized acquisition and reconstruction protocols. Results: For harmonized quantitation levels, PSF reconstructions yielded decreased noise and lower CRC max variability than regular OSEM3D reconstructions, suggesting they could enable a decreased activity regimen for matched performance. Conclusion: PSF reconstruction with a 7-mm postprocessing filter can provide harmonized quantification performance and acceptable image noise levels with injected activity, duration, and mass settings using a 260 MBq⋅s/kg acquisition parameter at scan time. Similarly, OSEM3D with a 5-mm postprocessing filter can provide similar performance with 401 MBq⋅s/kg.

Optimization of oncological ¹8F-FDG PET/CT imaging based on a multiparameter analysis.

PURPOSE: This paper describes a method to achieve consistent clinical image quality in (18)F-FDG scans accounting for patient habitus, dose regimen, image acquisition, and processing techniques. METHODS: Oncological PET/CT scan data for 58 subjects were evaluated retrospectively to derive analytical curves that predict image quality. Patient noise equivalent count rate and coefficient of variation (CV) were used as metrics in their analysis. Optimized acquisition protocols were identified and prospectively applied to 179 subjects. RESULTS: The adoption of different schemes for three body mass ranges (<60 kg, 60-90 kg, >90 kg) allows improved image quality with both point spread function and ordered-subsets expectation maximization-3D reconstruction methods. The application of this methodology showed that CV improved significantly (p < 0.0001) in clinical practice. CONCLUSIONS: Consistent oncological PET/CT image quality on a high-performance scanner was achieved from an analysis of the relations existing between dose regimen, patient habitus, acquisition, and processing techniques. The proposed methodology may be used by PET/CT centers to develop protocols to standardize PET/CT imaging procedures and achieve better patient management and cost-effective operations.

Mindfulness-based interventions for the treatment of smoking: a systematic literature review.

OBJECTIVES: Smoking is a chronic process in which craving and negative affect are considered the main barriers to maintaining abstinence in patients who have gone through treatment. Mindfulness-based interventions have presented encouraging preliminary results in follow-up lasting up to 6 months. The aim of this study was to perform a systematic literature review on the effects of mindfulness-based interventions for the treatment of smoking. METHODS: Of 198 articles on mindfulness and smoking, 13 controlled empirical studies were selected for the analysis. The search included papers published through April 14, 2014. The databases used were Cochrane Central Register of Controlled Trials, PsycINFO, PubMed, and Scopus. RESULTS: Scientific interest on mindfulness-based interventions for the treatment of smoking has increased over the past decade. All articles reported promising results, especially for smoking cessation, relapse prevention, number of cigarettes smoked, the moderation of mindfulness on the strength of relationship between craving and smoking, and the development of coping strategies to deal with triggers to smoke. Most of the articles corresponded to pilot or feasibility randomized controlled trials with low risk of bias regarding random sequence generation, attrition, and reporting. However, few articles reported sufficient data on selection, performance, and detection bias. CONCLUSIONS: Mindfulness appears to induce positive effects on mental health, which might contribute to the maintenance of tobacco abstinence. Despite the promising results regarding the responses of tobacco smokers to mindfulness-based interventions, additional well-designed clinical studies are needed.

Esgotamento entre profissionais da Atenção Primária à Saúde / Burnout Syndrome in Primary Health Care Professionals

O esgotamento profissional (EP) caracteriza-se por exaustão emocional, despersonalização, e baixa realização profissional, podendo ocorrer entre profissionais da saúde. Este artigo avalia o EP entre trabalhadores da Atenção Primária à Saúde (APS) em três municípios de pequeno porte da Zona da Mata Mineira. O estudo analisa a associação por regressão logística entre EP, aspectos socioeconômicos, demográficos e aspectos do trabalho. Um total de 149 profissionais foi selecionado, destes, 107 responderam a todos os questionários. Para mensurar o EP, foi utilizado o Maslach Burnout Inventory (MBI) e, para a caracterização dos profissionais, foi utilizado outro questionário segundo três diferentes questões: aspectos individuais, sociodemográficos e área de cobertura da equipe. Foram classificados 101 profissionais com indicação positiva para EP. As variáveis presentes no modelo de regressão logística backward stepwise, associadas positivamente com indicativo de esgotamento profissional foram: possuir idade inferior à mediana da população (> 29,5 anos) e fazer uso de medicamentos "calmantes, tranquilizantes e remédios para dormir". Os resultados contribuem para identificar fatores associados com o esgotamento profissional e apontam, neste sentido, para a necessidade de investigações mais detalhadas.

Burnout is characterized by emotional exhaustion, depersonalization and low occupational performance, which may occur among health professionals. This article evaluates burnout among workers in Primary Health Care (PHC) in three small towns in the Zona da Mata Mineira. The study analyzes associations by logistic regression between burnout, socioeconomic, and demographic aspects of work. A total of 149 professionals were selected, 107 of these responded to all questionnaires. To measure burnout, the Maslach Burnout Inventory (MBI) was used and to characterize the professional, a questionnaire assessing three different issues - namely individual and sociodemographic aspects and team area coverage - was used. 101 professionals were classified with positive indication for burnout. The variables present in the backward stepwise logistic regression model positively associated with indicative of burnout were: being younger than the population average (> 29.5 years) and use of drugs, including sedatives, tranquilizers and sleeping pills. The results contribute to the identification of factors associated with burnout and therefore highlight the need for more detailed investigation.

[Burnout syndrome in primary health care professionals]. / Esgotamento entre profissionais da Atenção Primária à Saúde.

Burnout is characterized by emotional exhaustion, depersonalization and low occupational performance, which may occur among health professionals. This article evaluates burnout among workers in Primary Health Care (PHC) in three small towns in the Zona da Mata Mineira. The study analyzes associations by logistic regression between burnout, socioeconomic, and demographic aspects of work. A total of 149 professionals were selected, 107 of these responded to all questionnaires. To measure burnout, the Maslach Burnout Inventory (MBI) was used and to characterize the professional, a questionnaire assessing three different issues - namely individual and sociodemographic aspects and team area coverage - was used. 101 professionals were classified with positive indication for burnout. The variables present in the backward stepwise logistic regression model positively associated with indicative of burnout were: being younger than the population average (> 29.5 years) and use of drugs, including sedatives, tranquilizers and sleeping pills. The results contribute to the identification of factors associated with burnout and therefore highlight the need for more detailed investigation.

Epidemiological and clinical patterns of 92 patients co-infected with HIV and Mycobacterium leprae from Rio de Janeiro State, Brazil.

BACKGROUND: Many articles have shown that HIV infection can modify the clinical course of leprosy, but very scant epidemiological and clinical data about this co-infection are available in the peer-reviewed literature. METHODS: We herein describe the geographical distribution and demographic characteristics of 92 HIV/Mycobacterium leprae co-infected patients assisted in a Brazilian Leprosy referral center. A multivariate analysis was performed in order to establish clinical factors associated with type 1 reaction. RESULTS: Co-infected patient admissions have steadily increased over the last years at this referral center. Most patients were men, with a mean age of 32.3 years and presenting with the paucibacillary form of leprosy. The use of antiretroviral therapy (ART) was the only factor associated with type 1 reaction. Most patients were living in the metropolitan area and the north sub area of Rio de Janeiro City. CONCLUSION: Co-infected patients receiving ART have a greater chance to develop type 1 reaction. Patients living with both HIV and leprosy are likely to live in regions characterized by a high density impoverished population.

Role of CD8(+) T cells in triggering reversal reaction in HIV/leprosy patients.

It has been reported that the initiation of highly active anti-retroviral therapy (HAART) is associated with the development of reversal reaction (RR) in co-infected HIV/leprosy patients. Nevertheless, the impact of HIV and HAART on the cellular immune response to Mycobacterium leprae (ML) remains unknown. In the present study, we observed that ex vivo peripheral blood mononuclear cells (PBMCs) of both RR and RR/HIV patients presented increased percentages of activated CD4(+) T cells when compared with the healthy individuals (HC) group. The frequency of CD8(+)  CD38(+) cells increased in the PBMCs of RR/HIV patients but not in RR patients when compared with the HC group. Both RR and RR/HIV skin lesion cells presented similar percentages of activated CD4(+) cells, but the numbers of activated CD8(+) cells were higher in RR/HIV in comparison to the RR group. The frequency of interferon-γ-producing cells was high in response to ML regardless of HIV co-infection. In ML-stimulated cells, there was an increase in central memory CD4(+) T-cell frequencies in the RR and RR/HIV groups, but an increase in central memory CD8(+) T-cell frequency was only observed in the RR/HIV group. ML increased granzyme B(+) effector memory CD8(+) T-cell frequencies in the RR/HIV PBMCs, but not in the HC and RR groups. Our data suggest that the increased expression of effector memory CD8(+) T cells, together with greater perforin/granzyme B production, could be an additional mechanism leading to the advent of RR in co-infected patients. Moreoever, this increased expression may explain the severity of RR occurring in these patients.

Superposition of leprosy and other neglected tropical diseases in the state of Rio de Janeiro: a case series report.

This is a report on eight non-HIV infected leprosy patients presenting unusual co-infection with other, often neglected, tropical diseases, namely: American tegumentary leishmaniasis (ATL), sporotrichosis, and cryptococcosis. To the best of our knowledge, there have been very few ATL-leprosy co-infection reports in the literature to date and only one previous description of the coexistence of leprosy-cryptococcosis and leprosy-sporotricosis.

Avaliação dos aspectos epidemiológicos, clínicos e imunopatológicos da reação tipo 1 em pacientes coinfectados pelo vírus da imunodeficiência humana e o Mycobacterium leprae / The epidemiological, clinical and immunopathological reaction of type 1 evaluation in patients co-infected with human immunodeficiency virus and Mycobacterium leprae

Introdução: Na última década, diversas publicações sobre a associação entre o início de terapia antirretroviral e o desenvolvimento de reação reversa foram publicadas. [...] Objetivo: Avaliar a influência da infecção pelo HIV na epidemiologia, apresentação clínica e mecanismos imunopatológicos envolvidos na reação tipo 1. Material e método: Estudo I: Estudo de série de casos, onde foi realizada uma descrição das características clínicas e epidemiológicas de todos os pacientes coinfectados pelo HIV/ M. leprae no momento do diagnóstico de hanseníase no ASA entre 1989 e 2011. Uma análise multivariada dos fatores associados à presença de reação reversa foi realizada. Os dados foram coletados pelo banco de registros dos pacientes no ASA e complementados por revisão de prontuários. Mapas temáticos sobre a distribuição geográfica dos pacientes foram construídos através do programa ArcMap. Estudo II: estudo de coorte retrospectiva, onde foram incluídos todos os pacientes borderline tuberculoide , maiores de 15 anos de idade e atendidos no ASA entre 1997 a 2008. Os pacientes foram comparados de acordo com a sorologia para infecção pelo HIV. Os dados foram coletados através de revisão de prontuários. A densidade de incidência de reação reversa foi calculada para cada grupo. Os fatores de risco para reação reversa foram avaliados através de análise multivariada por regressão de Poisson. Comparou- se as características clínicas da reação. Em soro de pacientes com reação reversa, foi avaliada a expressão de citocinas por Luminex e de proteína C reativa por ELISA. A detecção de IgM anti-PGL1 no diagnóstico de hanseníase foi avaliada através de ELISA.

Resultados: Estudo I: Houve um aumento no número de pacientes diagnosticados com hanseníase e HIV nos últimos anos, em um centro de referência. A maioria dos pacientes apresentava a forma paucibacilar da hanseníase e o uso de TARV foi único fator associado ao desenvolvimento de reação. A maioria dos pacientes eram moradores da região metropolitana e da região norte da cidade do Rio de Janeiro. Estudo II: A incidência de reação reversa foi significantemente maior entre pacientes coinfectados pelo HIV. A presença de BAAR nas lesões cutâneas, a infecção pelo HIV e o teste de Mitsuda negativo foram fatores de risco para a reação reversa. Uma maior proporção de pacientes coinfectados apresentou lesões cutâneas ulceradas, porém todos os pacientes responderam bem ao tratamento para reação com prednisona. Houve uma maior frequência de citocinas de perfil Th1 em pacientes sem HIV e de perfil Th2 em pacientes coinfectados na reação reversa. Nenhum paciente coinfectado apresentou positividade no exame de ELISA anti- PGL1. Conclusões: A maioria dos pacientes coinfectados foi proveniente de regiões com grande densidade populacional. A reação reversa é mais frequente em pacientes coinfectados. A infecção pelo HIV, o teste de Mitsuda negativo e a presença de BAAR em lesões cutâneas são fatores de risco para reação reversa. A reação reversa não parece ser mais grave em indivíduos coinfectados pelo HIV.

Introduction: In the last decade, Leprosy and HIV coinfection gained the attention of thescientific community due to the relation of type 1 reaction and the initiation of antiretroviraltherapy. [...] Objective: To evaluate the interaction of the HIV infection with the epidemiological, clinicaland immune pathological features of type 1 reaction.Subjects and Methods: Study I: A case series description of the geographical distributionand demographic characteristics of HIV/ M. leprae co-infected patients at the moment ofleprosy diagnosis in a Brazilian Leprosy referral center from 1989 - 2011. A multivariateanalysis was performed in order to establish clinical factors associated with type 1 reaction.Study II: We have conducted a retrospective longitudinal study of all BT leprosy patients older than 15 years of age attended at the FIOCRUZ Clinic from 1st January 1997 to 31th December 2008. Data retrieved from patients chart were compared according to the status of HIVinfection. The incidence rate of type 1 reaction and recurrent reaction was calculated. Riskfactors for type 1 reaction were evaluated by multivariate Poison regression model. In serumsamples from patients under type 1 reaction before prednisone treatment, cytokine levels wereanalyzed by Luminex and reactive C protein levels by ELISA. The presence of IgM antiPGL1was determinate by ELISA at leprosy diagnosis.

Results: Study I: There were an increasing number of patients diagnosed with leprosy andHIV over the last years at a referral center. Most patients presented paucibacillary leprosyclinical form and the use of ART was the only independent factor associated with type 1reaction. The majority of the patients were living in the metropolitan region and in the northsubarea of Rio de Janeiro city. Study II: The incidence per 100 person-years of type 1reaction was significantly greater in the HIV positive group. The presence of AFB in the skinlesion, a negative lepromin test and HIV infection were independent risk factors for type 1reaction. A greater proportion of coinfected patients presented ulcerated skin lesion, howeverall patients had a favorable evolution after treatment with corticosteroid. There was a greaterfrequency of type 1 cytokines among HIV negative patients and type 2 cytokines among HIVpositive patients. No coinfected patients responded for the detection of anti- PGL1.Conclusions: Patients living with both HIV and leprosy are likely to live in regionscharacterized by a high density impoverished population. The incidence rate of type 1 isgreater in HIV coinfected individuals under TARV. The HIV infection, a lepromin negativetest and the presence of AFB in the skin lesion are risk factor for type 1 reaction. Type 1reaction did not seem to be more severe in this group of individuals.

HAART: a risk factor for development of porphyria cutanea tarda? / HAART: fator de risco para desenvolvimento de porfiria cutânea tarda?

Porphyria cutanea tarda (PCT) is caused by inherited or acquired partial deficiency of the uroporphyrinogen-decarboxylase (Uro-D) enzyme activity. It is the most common form of porphyria. The main triggering factors to the development of porphyria cutanea tarda are alcohol, hepatitis C virus and human immunodeficiency virus. There are several reports of PCT associated with drugs, among them, antiretroviral therapy. We describe three HIV-positive patients, which showed photosensitivity as well as the emergence of tense blisters on sun-exposed areas during the use of highly active antiretroviral therapy (HAART) and discuss the possibility of PCT after the use of these drugs by those patients.

Porfiria cutanea tarda (PCT) é causada pela deficiência parcial, adquirida ou hereditária, da atividade da enzima uroporfirinogenio-decarboxilase (Uro-D). É a forma mais comum de porfiria. Os principais fatores desencadeantes para o desenvolvimento da porfiria cutânea tarda são o álcool, vírus da hepatite C e vírus da imunodeficiência humana. Há vários relatos de PCT associada a drogas, entre elas, à terapia antirretroviral. Descrevemos três pacientes HIV-positivos, que mostraram fotossensibilidade, bem como o surgimento de bolhas tensas em áreas fotoexpostas durante o uso da highly active antiretroviral therapy (HAART) e discutimos a possibilidade de ocorrência PCT com o uso desses medicamentos.

HAART: a risk factor for development of porphyria cutanea tarda?

Porphyria cutanea tarda (PCT) is caused by inherited or acquired partial deficiency of the uroporphyrinogen-decarboxylase (Uro-D) enzyme activity. It is the most common form of porphyria. The main triggering factors to the development of porphyria cutanea tarda are alcohol, hepatitis C virus and human immunodeficiency virus. There are several reports of PCT associated with drugs, among them, antiretroviral therapy. We describe three HIV-positive patients, which showed photosensitivity as well as the emergence of tense blisters on sun-exposed areas during the use of highly active antiretroviral therapy (HAART) and discuss the possibility of PCT after the use of these drugs by those patients.

Leprosy reaction as a manifestation of immune reconstitution inflammatory syndrome: a case series of a Brazilian cohort.

Several case reports have demonstrated that the immune reconstitution inflammatory syndrome induces reversal reaction in HIV and leprosy-coinfected patients. The present study describes 10 cases of immune reconstitution inflammatory-associated reversal reaction. The patients evolved satisfactorily despite presenting a more severe form of the disease and the fact that three required an additional use of corticoids. The present study, the largest case series published to date, demonstrates that leprosy reaction is a manifestation of immune reconstitution.

Oxidized tissue proteins after intestinal reperfusion injury in rats

OBJETIVO: Analisar se a mensuração da proteína carbonilada pode ser validada como método capaz de permitir a identificação de um estresse oxidativo intestinal causado por lesões decorrentes da isquemia e reperfusão. MÉTODOS: Vinte e cinco ratos machos da linhagem Wistar, pesando entre 200 e 250g, foram divididos em três grupos. Grupo I – controle (n = 10). Grupo II – simulação (n = 5) e grupo III (n = 10) submetido a 60 minutos de isquemia intestinal e igual intervalo para reperfusão. Para este fim clampeou-se a artéria mesentérica superior no seu terço distal. Alterações histológicas e os níveis de proteínas carboniladas foram determinados em amostras obtidas em todos os grupos. No grupo III foram estudados segmentos ileais reperfundidos e normais. RESULTADOS: Em todos os segmentos reperfundidos houve edema da mucosa e submucosa, além de infiltrado inflamatório da lâmina própria. Os níveis de proteína carbonilada aumentaram no grupo III, inclusive nos segmentos não isquemiados. A sensibilidade e a especificidade da proteína carbonilada no tecido foram, respectivamente, de 94% e 88%. CONCLUSÃO: O procedimento da proteína carbonilada é útil como marcador biológico do estresse oxidativo após isquemia e reperfusão intestinal em ratos. Também foi relevante o efeito do estresse oxidativo, observado à distância do lócus da lesão primária.