The Screening of microRNAs in Chronic Myeloid Leukemia: A Clinical Evaluation.

Chronic myeloid leukemia (CML) is a type of leukemia whose main genetic marker is the reciprocal translocation that leads to the production of the BCR::ABL1 oncoprotein. The expression of some genes may interfere with the progression and development of leukemias. MicroRNAs are small non-coding RNAs that have the potential to alter the expression of some genes and may be correlated with some types of leukemia and could be used as biomarkers in the diagnosis and prognosis of patients. Therefore, this project carried out an analysis of microRNA-type plasma biomarkers in patients with chronic myeloid leukemia at unique points, including follow-up analysis of patients from the Erasto Gaertner Hospital. 35 microRNAs were analyzed in different cohorts. Inside those groups, 70 samples were analyzed at unique points and 11 patients in a follow-up analysis. Statistically different results were found for microRNA-7-5p, which was found to be upregulated in patients with high expression of the BCR::ABL1 transcript when compared to healthy controls. This microRNA also had evidence of behavior related to BCR::ABL1 when analyzed in follow-up, but strong evidence was not found. In this way, this work obtained results that may lead to manifestations of a relationship between miR-7-5p and chronic myeloid leukemia, and evaluations of possible microRNAs that are not related to this pathology.

Targeting KRAS in Pancreatic Ductal Adenocarcinoma: The Long Road to Cure.

Pancreatic ductal adenocarcinoma (PDAC) remains an important cause of cancer-related mortality, and it is expected to play an even bigger part in cancer burden in the years to come. Despite concerted efforts from scientists and physicians, patients have experienced little improvement in survival over the past decades, possibly because of the non-specific nature of the tested treatment modalities. Recently, the discovery of potentially targetable molecular alterations has paved the way for the personalized treatment of PDAC. Indeed, the central piece in the molecular framework of PDAC is starting to be unveiled. KRAS mutations are seen in 90% of PDACs, and multiple studies have demonstrated their pivotal role in pancreatic carcinogenesis. Recent investigations have shed light on the differences in prognosis as well as therapeutic implications of the different KRAS mutations and disentangled the relationship between KRAS and effectors of downstream and parallel signaling pathways. Additionally, the recognition of other mechanisms involving KRAS-mediated pathogenesis, such as KRAS dosing and allelic imbalance, has contributed to broadening the current knowledge regarding this molecular alteration. Finally, KRAS G12C inhibitors have been recently tested in patients with pancreatic cancer with relative success, and inhibitors of KRAS harboring other mutations are under clinical development. These drugs currently represent a true hope for a meaningful leap forward in this dreadful disease.

Molecular BCR::ABL1 Quantification and ABL1 Mutation Detection as Essential Tools for the Clinical Management of Chronic Myeloid Leukemia Patients: Results from a Brazilian Single-Center Study.

Chronic myeloid leukemia (CML) is a well-characterized oncological disease in which virtually all patients possess a translocation (9;22) that generates the tyrosine kinase BCR::ABL1 protein. This translocation represents one of the milestones in molecular oncology in terms of both diagnostic and prognostic evaluations. The molecular detection of the BCR::ABL1 transcription is a required factor for CML diagnosis, and its molecular quantification is essential for assessing treatment options and clinical approaches. In the CML molecular context, point mutations on the ABL1 gene are also a challenge for clinical guidelines because several mutations are responsible for tyrosine kinase inhibitor resistance, indicating that a change may be necessary in the treatment protocol. So far, the European LeukemiaNet and the National Comprehensive Cancer Network (NCCN) have presented international guidelines on CML molecular approaches, especially those related to BCR::ABL1 expression. In this study, we show almost three years' worth of data regarding the clinical treatment of CML patients at the Erasto Gaertner Hospital, Curitiba, Brazil. These data primarily comprise 155 patients and 532 clinical samples. BCR::ABL1 quantification by a duplex-one-step RT-qPCR and ABL1 mutations detection were conducted. Furthermore, digital PCR for both BCR::ABL1 expression and ABL1 mutations were conducted in a sub-cohort. This manuscript describes and discusses the clinical importance and relevance of molecular biology testing in Brazilian CML patients, demonstrating its cost-effectiveness.

Hilab System Device in an Oncological Hospital: A New Clinical Approach for Point of Care CBC Test, Supported by the Internet of Things and Machine Learning.

The complete blood count (CBC) is a highly requested test that is generally restricted to centralized laboratories, which are limited by high cost, being maintenance-demanding, and requiring costly equipment. The Hilab System (HS) is a small, handheld hematological platform that uses microscopy and chromatography techniques, combined with machine learning (ML) and artificial intelligence (AI), to perform a CBC test. This platform uses ML and AI techniques to add higher accuracy and reliability to the results besides allowing for faster reporting. For clinical and flagging capability evaluation of the handheld device, the study analyzed 550 blood samples of patients from a reference institution for oncological diseases. The clinical analysis encompassed the data comparison between the Hilab System and a conventional hematological analyzer (Sysmex XE-2100) for all CBC analytes. The flagging capability study compared the microscopic findings from the Hilab System and the standard blood smear evaluation method. The study also assessed the sample collection source (venous or capillary) influences. The Pearson correlation, Student t-test, Bland-Altman, and Passing-Bablok plot of analytes were calculated and are shown. Data from both methodologies were similar (p > 0.05; r ≥ 0.9 for most parameters) for all CBC analytes and flagging parameters. Venous and capillary samples did not differ statistically (p > 0.05). The study indicates that the Hilab System provides humanized blood collection associated with fast and accurate data, essential features for patient wellbeing and quick physician decision making.

A Pilot Randomized Controlled Clinical Trial Comparing Piezo Versus Conventional Rotary Surgery for Removal of Impacted Mandibular Third Molars.

BACKGROUND: The extraction of impacted mandibular third molars is a frequent dental surgery, interfering with patients' quality of life. Ultrasonic surgery is an alternative to osteotomy with conventional rotary instruments. This study compares postoperative signals and symptoms after extracting impacted mandibular third molars using ultrasonic surgery or conventional rotary osteotomy. METHODS: A pilot randomized controlled clinical trial was conducted. Thirty patients were randomly divided into the test group (ultrasonic technique) and a control group (conventional rotatory technique). All surgeries were timed. Swelling parameters, trismus and paraesthesia were evaluated on the day of surgery and the third, fifth and seventh postoperative days. Intraoperative bleeding was evaluated during surgery. Postoperative pain was evaluated daily by the patient through a visual analogue scale and the number of ingested analgesics. RESULTS: Pain, swelling and trismus present beneficial results with the ultrasonic technique but without statistical significance. Intraoperative bleeding was significantly lower with ultrasonic surgery (t(28) = 3.258; p = 0.003). Operating time was significantly higher in extractions involving osteotomy and cutting crown and roots either with the conventional technique (p = 0.020) or ultrasonic technique (p = 0.039). Regardless of the surgical difficulty, no statistically significant results were detected between techniques regarding the procedure duration. CONCLUSIONS: The beneficial postoperative signs and symptoms make ultrasonic surgery a favourable therapeutic option, especially when the integrity of noble anatomical structures is the most important risk factor. Further studies with larger samples are needed to support the use of piezosurgery as a valid option for impacted mandibular third molar extraction.

Leukocyte ratios are useful early predictors for adverse outcomes of COVID-19 infection

ABSTRACT Leukocyte biomarkers, including the neutrophil-to-lymphocyte (NLR), monocyte-to-lymphocyte-(MLR), platelet-to-lymphocyte (PLR) ratios and systemic immune-inflammation index (SII) have been associated with severity and mortality of patients with COVID-19. The purpose of this study was to evaluate the association of baseline leukocyte biomarkers calculated in the emergency department (ED) with the disease severity and mortality. This was a retrospective cohort study that evaluated 1,535 (mean age 57+18 years) patients with SARS-CoV-2 infection in the ED of a single reference center. Outcomes were severity, defined as intensive care unit (ICU) admission requirement, and in-hospital mortality. All leukocyte biomarkers were calculated in the ED before the hospital admission. Their ability to predict the severity and mortality was measured using receiver operating characteristic (ROC) curves. Severity and mortality were observed in 30.9% and 12.6% of the patients, respectively, and were significantly correlated with NLR, MLR, PLR and SII, but only NLR was independently associated with both outcomes on multivariate analysis. Analysis of ROC curves revealed that NLR (0.78 for severity and 0.80 for mortality) and SII (0.77 for severity and 0.75 for mortality) had the best ability to predict mortality, when compared to other ratios. The highest AUC was observed for NLR, employing cut-off points of 5.4 for severity and 5.5 for mortality. Leukocyte biomarkers, particularly NLR, are capable of predicting the severity and mortality of patients with SARS-CoV-2 infection and could be important adjunct tools to identify patients in the ED that are more prone to develop adverse outcomes.

Avaliação audiológica em pacientes com hepatite C crônica tratados por antivirais de ação direta / Audiological evaluation in patients with chronic hepatitis C treated by direct-action antivirals

RESUMO Objetivo Verificar se o tratamento com os antivirais de ação direta para a hepatite C provocam efeitos adversos na audição. Métodos A casuística foi composta por 16 indivíduos portadores do vírus da hepatite C, de ambos os gêneros, com média de idade de 51 anos. Foram excluídos do grupo indivíduos com perda auditiva do tipo condutiva ou mista e que apresentassem fatores de risco para perda auditiva. A avaliação foi realizada em dois momentos: antes do uso dos antivirais de ação direta e após o término do tratamento de três meses. Incluiu os seguintes procedimentos: anamnese, inspeção do meato acústico externo, audiometria tonal liminar, limiar de recepção de fala, índice de reconhecimento de fala, medidas de imitância acústica e emissões otoacústicas evocadas por estímulo transiente e produto de distorção. Resultados: Houve baixa ocorrência de zumbido e vertigem. Não houve diferença estatisticamente significativa entre os resultados da avaliação pré-tratamento e pós-tratamento. Conclusão O tratamento com antivirais de ação direta contra o vírus da hepatite C não provocou efeitos adversos na função auditiva.

ABSTRACT Purpose To verify whether treatment with hepatitis C direct-acting antivirals has adverse effects on hearing. Methods The sample consisted of 16 individuals with hepatitis C virus, of both sexes, with an average age of 51 years. Individuals with conductive or mixed hearing loss who presented risk factors for hearing loss were excluded from the group. The evaluation was carried out in two moments: before the use of direct-acting antivirals and after the three-month treatment. It included the following procedures: anamnesis, external auditory canal inspection, pure tone audiometry, speech reception threshold, speech recognition index, acoustic immittance measures and transient and distortion product otoacoustic emissions. Results There was a low incidence of tinnitus and vertigo. There was no statistically significant difference between the results of the pre- and post-treatment assessment. Conclusion The treatment with direct-acting antivirals against the hepatitis C virus did not cause any adverse effects on hearing function.

Efficacy and Safety Associated With Immune Checkpoint Inhibitors in Unresectable Hepatocellular Carcinoma: A Meta-analysis.

Importance: Immune checkpoint inhibitors (ICIs) have yielded conflicting results in hepatocellular carcinoma (HCC). The overall effect of ICIs compared with standard therapies in unresectable HCC requires more research. Objective: To estimate the efficacy and safety associated with ICIs compared with standard therapies in patients with unresectable HCC. Data Sources: PubMed, Cochrane Library, Web of Science, Latin American and Caribbean Health Sciences Literature, and American Society of Clinical Oncology and European Society of Medical Oncology meeting proceedings were systematically searched. Reference lists from studies selected by electronic searching were manually searched to identify additional relevant studies. The search included literature published or presented from February 2010 to February 2020. Study Selection: From December 2019 to February 2020, independent reviewers evaluated each database, scanning the title, abstract, and keywords of every record retrieved. Full articles were further assessed if the information given suggested that the study was a randomized clinical trial (RCT) comparing ICIs vs standard therapies in the treatment of unresectable HCC. Data Extraction and Synthesis: The full text of the resulting studies and extracted data were reviewed independently according to PRISMA guidelines. Summary hazard ratios (HRs) of overall survival (OS) and progression-free survival (PFS) were calculated by a random-effects model. The likelihood of ICIs being associated with overall response rate (ORR) and treatment-related adverse events (TRAEs) was expressed by odds ratios (ORs) using a random-effects model. Main Outcomes and Measures: The main outcomes were OS, PFS, ORR, and TRAEs. Results: Of 1836 studies yielded by the search, 3 were retained, totaling 1657 patients (985 treated with ICIs vs 672 receiving standard treatment). Two studies evaluated ICIs as monotherapy, and 1 study investigated the combination of ICIs with bevacizumab. Compared with standard therapies (sorafenib in first-line therapy or placebo in second-line therapy), ICIs were associated with significantly improved OS (HR, 0.75; 95% CI, 0.62-0.92; P = .006), PFS (HR, 0.74; 95% CI, 0.56-0.97; P = .03), and ORR (OR, 2.82; 95% CI 2.02-3.93; P < .001). The probability of grade 3 or 4 TRAEs was lower with ICIs than with sorafenib (OR, 0.44; 95% CI, 0.20-0.96; P = .04). Conclusions and Relevance: This meta-analysis found superior efficacy and safety associated with ICIs compared with standard therapies and highlights the survival benefit associated with the combination of antiangiogenic therapy with ICIs in first-line systemic therapy of unresectable HCC.

Emerging and Experimental Agents for Anal Cancer: What is New?

Squamous cell carcinoma of the anal canal (SCCA) is an HPV-related malignancy with rising incidence in the past few decades in the US, characterized by high rates of complete response to chemoradiotherapy with curative intent. However, in a long-term follow-up, a meaningful subgroup of patients with locally advanced disease presents disease recurrence, which demands treatments with high morbidity and important impact in the quality of life. In metastatic or unresectable disease, palliative chemotherapy is the standard of care, but it is still associated with a dismal prognosis. Novel agents are urgently needed in the systemic therapy of SCCA. From a translational standpoint, there are many hurdles to overcome, since PI3KCA mutation is the most frequent genetic abnormality and actionable mutations are rarely found in SCCA, as well as it is characterized by low tumor mutational burden and low rates of high-frequency microsatellite instability. But the latest studies of immunotherapeutic approaches have produced promising findings and this therapeutic strategy is the major path being followed in the ongoing clinical trials. The latest advances in the systemic therapy of SCCA have provided the framework for the conception of new clinical trials. Therefore, carboplatin plus paclitaxel have become the backbone for novel agents. Immune checkpoint inhibitors (ICIs), mainly anti-PD-1 monoclonal antibodies, such as retifanlimab, nivolumab, and atezolizumab have been studied in Phase III trials with chemotherapy in first-line therapy. Likewise, ICIs have been evaluated in locally advanced and refractory disease. Novel technologies, such as bispecific antibodies, and immunotherapeutic approaches, such as vaccines and adoptive T-cell therapies, have also been tested in ongoing clinical trials. Immunotherapy may bring practice-changing advances in the systemic therapy of SCCA in the next few years and it might play a larger role in the therapeutic management of this challenging disease.

PERIPHERAL BLOOD ENDOTOXIN LEVELS ARE NOT ASSOCIATED WITH SMALL INTESTINAL BACTERIAL OVERGROWTH IN NONALCOHOLIC FATTY LIVER DISEASE WITHOUT CIRRHOSIS.

BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is one of the most common forms of chronic liver disease worldwide. Approximately 20% of individuals with NAFLD develop nonalcoholic steatohepatitis (NASH), which is associated with increased risk of cirrhosis, portal hypertension, and hepatocellular carcinoma. Intestinal microflora, including small intestinal bacterial overgrowth (SIBO), appear to play an important role in the pathogenesis of the disease, as demonstrated in several clinical and experimental studies, by altering intestinal permeability and allowing bacterial endotoxins to enter the circulation. OBJECTIVE: To determine the relationship between SIBO and endotoxin serum levels with clinical, laboratory, and histopathological aspects of NAFLD and the relationship between SIBO and endotoxin serum levels before and after antibiotic therapy. METHODS: Adult patients with a histological diagnosis of NAFLD, without cirrhosis were included. A comprehensive biochemistry panel, lactulose breath test (for diagnosis of SIBO), and serum endotoxin measurement (chromogenic LAL assay) were performed. SIBO was treated with metronidazole 250 mg q8h for 10 days and refractory cases were given ciprofloxacin 500 mg q12h for 10 days. RESULTS: Overall, 42 patients with a histopathological diagnosis of NAFLD were examined. The prevalence of SIBO was 26.2%. Comparison of demographic and biochemical parameters between patients with SIBO and those without SIBO revealed no statistically significant differences, except for use of proton pump inhibitors, which was significantly more frequent in patients with positive breath testing. The presence of SIBO was also associated with greater severity of hepatocellular ballooning on liver biopsy. Although the sample, as a whole, have elevated circulating endotoxin levels, we found no significant differences in this parameter between the groups with and without SIBO. Endotoxin values before and after antibiotic treatment did not differ, even on paired analysis, suggesting absence of any relationship between these factors. Serum endotoxin levels were inversely correlated with HDL levels, and directly correlated with triglyceride levels. CONCLUSION: Serum endotoxin levels did not differ between patients with and without SIBO, nor did these levels change after antibacterial therapy, virtually ruling out the possibility that elevated endotoxinemia in non-cirrhotic patients with NAFLD is associated with SIBO. Presence of SIBO was associated with greater severity of ballooning degeneration on liver biopsy, but not with a significantly higher prevalence of NASH. Additional studies are needed to evaluate the reproducibility and importance of this finding in patients with NAFLD and SIBO.

Níveis de endotoxina no sangue periférico não estão relacionados ao supercrescimento bacteriano intestinal em portadores de doença hepática gordurosa não alcoólica sem cirrose / Peripheral blood endotoxin levels are not associated with small intestinal bacterial overgrowth in nonalcoholic fatty liver disease without cirrhosis

ABSTRACT BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is one of the most common forms of chronic liver disease worldwide. Approximately 20% of individuals with NAFLD develop nonalcoholic steatohepatitis (NASH), which is associated with increased risk of cirrhosis, portal hypertension, and hepatocellular carcinoma. Intestinal microflora, including small intestinal bacterial overgrowth (SIBO), appear to play an important role in the pathogenesis of the disease, as demonstrated in several clinical and experimental studies, by altering intestinal permeability and allowing bacterial endotoxins to enter the circulation. OBJECTIVE: To determine the relationship between SIBO and endotoxin serum levels with clinical, laboratory, and histopathological aspects of NAFLD and the relationship between SIBO and endotoxin serum levels before and after antibiotic therapy. METHODS: Adult patients with a histological diagnosis of NAFLD, without cirrhosis were included. A comprehensive biochemistry panel, lactulose breath test (for diagnosis of SIBO), and serum endotoxin measurement (chromogenic LAL assay) were performed. SIBO was treated with metronidazole 250 mg q8h for 10 days and refractory cases were given ciprofloxacin 500 mg q12h for 10 days. RESULTS: Overall, 42 patients with a histopathological diagnosis of NAFLD were examined. The prevalence of SIBO was 26.2%. Comparison of demographic and biochemical parameters between patients with SIBO and those without SIBO revealed no statistically significant differences, except for use of proton pump inhibitors, which was significantly more frequent in patients with positive breath testing. The presence of SIBO was also associated with greater severity of hepatocellular ballooning on liver biopsy. Although the sample, as a whole, have elevated circulating endotoxin levels, we found no significant differences in this parameter between the groups with and without SIBO. Endotoxin values before and after antibiotic treatment did not differ, even on paired analysis, suggesting absence of any relationship between these factors. Serum endotoxin levels were inversely correlated with HDL levels, and directly correlated with triglyceride levels. CONCLUSION: Serum endotoxin levels did not differ between patients with and without SIBO, nor did these levels change after antibacterial therapy, virtually ruling out the possibility that elevated endotoxinemia in non-cirrhotic patients with NAFLD is associated with SIBO. Presence of SIBO was associated with greater severity of ballooning degeneration on liver biopsy, but not with a significantly higher prevalence of NASH. Additional studies are needed to evaluate the reproducibility and importance of this finding in patients with NAFLD and SIBO.

RESUMO CONTEXTO: A doença hepática gordurosa não alcoólica (DHGNA) é uma das doenças hepáticas crônicas mais comuns em todo o mundo. Aproximadamente 20% dos indivíduos com DHGNA desenvolvem esteato-hepatite não alcoólica (EHNA) que está associada a maior risco de cirrose, hipertensão portal e/ou carcinoma hepatocelular. Alterações da microflora intestinal, incluindo o supercrescimento bacteriano intestinal (SBI), parecem ter um papel importante na patogênese da doença, como demonstrado em estudos clínicos e experimentais, pela alteração da permeabilidade intestinal e permitindo que endotoxinas bacterianas alcancem a circulação sanguínea. OBJETIVO: Determinar a relação entre o SBI e níveis de endotoxina sérica em pacientes não cirróticos com DHGNA, com os aspectos clínicos, laboratoriais e histopatológicos da doença e a relação entre SBI e níveis séricos de endotoxina antes e após tratamento com antibiótico. MÉTODOS: Foram incluídos pacientes maiores de 18 anos e com diagnóstico histológico de DHGNA, sem cirrose. Foram realizados: avaliação bioquímica geral, teste do H2 expirado com lactulose para diagnóstico de SBI e dosagem de endotoxina sérica - ensaio cromogênico para LAL. Para o tratamento do SBI utilizamos o metronidazol 250 mg de 8/8 horas por 10 dias e para os casos de retratamento foi utilizado ciprofloxacino 500 mg de 12/12 horas por 10 dias. RESULTADOS: Incluímos 42 pacientes com diagnóstico histopatológico de DHGNA. A prevalência de SBI foi de 26,2%. Quando comparamos o grupo dos pacientes com SBI com aquele sem SBI e analisamos suas variáveis demográficas e bioquímicas, não encontramos diferença estatisticamente significante entre elas, exceto pela utilização de inibidores de bomba de próton, que foi significantemente mais frequente nos pacientes com teste respiratório positivo. A presença de SBI também esteve associada à maior intensidade de balonização na biópsia hepática, quando comparados àqueles sem SBI. Embora o grupo como um todo apresentasse elevação dos níveis circulantes de endotoxinas, não pudemos encontrar diferenças estatísticas entre os grupos com e sem SBI. Os valores de endotoxinas pré e pós tratamento antibiótico não diferiram entre si, mesmo em análise pareada, sugerindo ausência de relação entre esses fatores. Os níveis de endotoxina sérica apresentaram correlação inversa com os níveis de HDL e correlação direta com os níveis de triglicerídeos. CONCLUSÃO: Níveis de endotoxinas séricas não diferiram entre os pacientes com e sem SBI, e que esses níveis não se modificaram após tratamento medicamentoso da proliferação bacteriana, praticamente excluindo a possibilidade de que os níveis elevados de endotoxemia estejam relacionados à SBI. A presença dessa proliferação bacteriana esteve associada à maior intensidade de balonização na biópsia hepática, mas não à maior prevalência de EHNA entre os portadores de SBI. Estudos complementares são necessários para avaliar a reprodutibilidade e a importância desse achado em portadores de DHGNA com SBI.

A Tekoá Ka'aguy Porã: Espaço Ancestral e Produção de Subjetividade Mbya-Guarani / The Tekoá Ka'aguy Porã: Ancestral Space and Mbya-Guarani Subjectivity Production / La Tekoá Ka'aguy Porã: Espacio Ancestral y Producción de Subjetividad Mbya-Guaraní

Neste artigo trazemos algumas discussões apresentadas na dissertação "Retomada Mbya-Guarani no Yvyrupá: produção de subjetividade, agenciamentos e criação de estratégias de luta", que teve como objetivo pesquisar processos de subjetivação, produção de composições e estratégias de enfrentamento/resistência em meio ao movimento dos indígenas Myba-Guarani de retomada de área em Maquiné-RS, Brasil. Entendeu-se que, para tanto, o método da cartografia se mostrava interessante, pois propicia traçar os percursos dos atores sociais no terreno da experiência. A partir de análise de materiais como diários de campo, fotos produzidas por indígenas e postadas em um grupo de WhatsApp que agregava apoiadores, audiovisuais de divulgação veiculados na internet, abordamos aqui, um dos pontos desenvolvidos na dissertação: o espaço sociocosmológico Mbya que se atualizou naquela região ­ a tekoá Ka'aguy Porã ­ entendendo-o como espaço ancestral (retomado na Retomada) para a efetuação do modo de vida ­ o tekó ­ Mbya-Guarani. Buscamos traçar aproximações, articulações e torções conceituais para pensar a produção de subjetividade deste povo indígena. Ao final, tecemos considerações sobre o que entendemos ser potentes aberturas e contribuições para a Psicologia Social, assim como para as ciências sociais e para a pesquisa com povos indígenas. Palavras-chave: Tekoá; Tekó, Produção de subjetividade, Mbya-Guarani, Cartografia....(AU)

In this article we present some discussions derived from the dissertation "Mbya-Guarani Retrieval in Yvyrupá: production of subjectivity, agency and creation of strategies of struggle", whose objective was to investigate subjectivation processes, production of coping/resistance strategies of the Myba-Guarani natives in the area of Maquiné/RS, Brazil. It was understood that, for this, the method of cartography was interesting, since it allows tracing the paths of social actors in the field of experience. Based on an analysis of materials such as field diaries, indigenous photos posted in a WhatsApp group that aggregated supporters, broadcasting aids on the Internet, we approach here one of the points developed in the dissertation: the Mbya sociocosmological space that was updated in that region ­ the tekoá Ka'aguy Porã ­ understanding it as ancestral space (taken up in the Retrieval) for the realization of the way of life ­ the tekó ­ Mbya-Guarani. We seek to draw approximations, articulations and conceptual twists to think about the production of subjectivity of this indigenous people. In conclusive terms, we make considerations about what we understand to be potent openings and contributions to social psychology, as well as to the social sciences and to research with indigenous peoples....(AU)

En este artículo traemos algunas discusiones presentadas en la disertación "Retomada Mbya-Guaraní en Yvyrupá: producción de subjetividad, agenciamientos y creación de estrategias de lucha" que tuvo como objetivo investigar procesos de subjetivación, producción de composiciones y estrategias de afrontamiento/resistencia en medio del movimiento de los indígenas Myba-Guarani de retomada de área en Maquiné/RS, Brasil. Se entendió que, para tanto, el método de la cartografía se mostraba interesante, pues propicia trazar los recorridos de los actores sociales en el terreno de la experiencia. A partir de análisis de materiales como diarios de campo, fotos por indígenas y publicadas en un grupo de WhatsApp que agregaba apoyadores, audiovisuales de divulgación vehiculados en internet, abordamos aquí uno de los puntos desarrollados en la disertación: el espacio sociocosmológico Mbya que se actualizó en aquella ­ la tekaá Ka'aguy Porã ­ entendiéndolo como espacio ancestral (retomado en la Retomada) para la realización del modo de vida ­ el tekó ­ Mbya-Guaraní. Buscamos trazar aproximaciones, articulaciones y torsiones conceptuales para pensar la producción de subjetividad de este pueblo indígena. Al final, hacemos consideraciones sobre lo que entendemos ser potentes aperturas y contribuciones a la psicología social, así como a las ciencias sociales ya la investigación con pueblos indígenas....(AU)

LATE IMPACT OF THE LAPAROSCOPIC TREATMENT OF DEEP INFILTRATING ENDOMETRIOSIS WITH SEGMENTAL COLORECTAL RESECTION.

BACKGROUND: Deep infiltrating colorectal endometriosis may severely affect the quality of life and fertility of patients. Although segmental resection is a therapeutic option that provides positive outcomes in the management of symptoms, its functional effects are still unproven. AIM: Assess the late impact of the laparoscopic approach in treating deep infiltrating endometriosis with segmental colorectal resection. METHODS: Prospective case series of 46 patients submitted to laparoscopic treatment of deep infiltrating endometriosis with segmental colorectal resection between 2013 and 2016. Fertility, gynecological and bowel symptoms were assessed at the preoperative period and at three and 12 months (or more) after the procedure. RESULTS: Preoperative interview assessed the prevalence of infertility (45.6%), gynecological (87%) and intestinal (80.4%) symptoms. At the third month after the procedure a significant reduction in the prevalence of gynecological symptoms (p<0,001), tenesmus (p=0,001) and dysquesia (p=0,002) was observed. After a period of 12 months or more following the procedure a significant reduction in the prevalence persisted for dysmenorrhea (p=0,001), deep dyspareunia (p=0,041), chronic pelvic pain (p=0,011) and dysquesia (p=0,001), as compared to the preoperative period. Total pregnancy rate was 57.1% and spontaneous pregnancy 47.6%. CONCLUSION: The treatment of deep infiltrating endometriosis using segmental colorectal resection has provided early and late relief of gynecological and bowel symptoms. The outcomes also indicate a positive impact on the fertility of infertile patients.

Solitary Fibrous Tumors of the Orbit and Central Nervous System: A Case Series Analysis.

INTRODUCTION: Solitary fibrous tumor (SFT) is rarely diagnosed in clinical practice. Since its initial descriptions in the central nervous system (CNS) and the orbits, very few case reports and small case series have expanded their clinical and pathological characterization. We sought to describe a cases series of SFT from a single laboratory of neuropathology belonging to a tertiary university hospital. METHODS: Retrospective clinical and histopathological description of eight cases of CNS and orbital SFT diagnosed over a 21-year period of time. RESULTS: Median age was 47.3 years and four were males. Clinical presentation was related to local mass effect in all. Tumors occurred in the orbits (5/62.5%), intracranial dura attached (2), and the spinal medulla (1). The neuropathology showed the presence of hemangiopericytoma type (2), classic type (3), and mixed type (3). Histological anaplasia was present in two cases. Widespread/total immunoreactivity for vimentin, CD34, and Bcl-2 was present in all. Gross total removal was conducted in the majority (6/75%) and subtotal removal in 2 (25%). Three patients were submitted to adjuvant treatment (radiosurgery and radiotherapy). Recurrence occurred in four patients, 13-120 months after surgical intervention. Anaplasia was present in one case of recurrence. CONCLUSION: Our case series confirms the clinical and neuropathological diversity of CNS and orbital SFTs. Studies with longer follow-up periods are necessary to better understand the clinical behavior and prognosis of the SFT in the CNS and orbits.

Alternative splicing originates different domain structure organization of Lutzomyia longipalpis chitinases

BACKGROUND The insect chitinase gene family is composed by more than 10 paralogs, which can codify proteins with different domain structures. In Lutzomyia longipalpis, the main vector of visceral leishmaniasis in Brazil, a chitinase cDNA from adult female insects was previously characterized. The predicted protein contains one catalytic domain and one chitin-binding domain (CBD). The expression of this gene coincided with the end of blood digestion indicating a putative role in peritrophic matrix degradation. OBJECTIVES To determine the occurrence of alternative splicing in chitinases of L. longipalpis. METHODS We sequenced the LlChit1 gene from a genomic clone and the three spliced forms obtained by reverse transcription polymerase chain reaction (RT-PCR) using larvae cDNA. FINDINGS We showed that LlChit1 from L. longipalpis immature forms undergoes alternative splicing. The spliced form corresponding to the adult cDNA was named LlChit1A and the two larvae specific transcripts were named LlChit1B and LlChit1C. The B and C forms possess stop codons interrupting the translation of the CBD. The A form is present in adult females post blood meal, L4 larvae and pre-pupae, while the other two forms are present only in L4 larvae and disappear just before pupation. Two bands of the expected size were identified by Western blot only in L4 larvae. MAIN CONCLUSIONS We show for the first time alternative splicing generating chitinases with different domain structures increasing our understanding on the finely regulated digestion physiology and shedding light on a potential target for controlling L. longipalpis larval development.

Late impact of the laparoscopic treatment of deep infiltrating endometriosis with segmental colorectal resection / Impacto tardio do tratamento laparoscópico da endometriose profunda infiltrativa com ressecção segmentar colorretal

ABSTRACT Background: Deep infiltrating colorectal endometriosis may severely affect the quality of life and fertility of patients. Although segmental resection is a therapeutic option that provides positive outcomes in the management of symptoms, its functional effects are still unproven. Aim: Assess the late impact of the laparoscopic approach in treating deep infiltrating endometriosis with segmental colorectal resection. Methods: Prospective case series of 46 patients submitted to laparoscopic treatment of deep infiltrating endometriosis with segmental colorectal resection between 2013 and 2016. Fertility, gynecological and bowel symptoms were assessed at the preoperative period and at three and 12 months (or more) after the procedure. Results: Preoperative interview assessed the prevalence of infertility (45.6%), gynecological (87%) and intestinal (80.4%) symptoms. At the third month after the procedure a significant reduction in the prevalence of gynecological symptoms (p<0,001), tenesmus (p=0,001) and dysquesia (p=0,002) was observed. After a period of 12 months or more following the procedure a significant reduction in the prevalence persisted for dysmenorrhea (p=0,001), deep dyspareunia (p=0,041), chronic pelvic pain (p=0,011) and dysquesia (p=0,001), as compared to the preoperative period. Total pregnancy rate was 57.1% and spontaneous pregnancy 47.6%. Conclusion: The treatment of deep infiltrating endometriosis using segmental colorectal resection has provided early and late relief of gynecological and bowel symptoms. The outcomes also indicate a positive impact on the fertility of infertile patients.

RESUMO Racional: A endometriose profunda infiltrativa colorretal pode impactar de maneira importante na qualidade de vida e na fertilidade das pacientes. A ressecção segmentar é uma opção terapêutica com resultados positivos na queda dos sintomas, porém ainda sem efeitos funcionais comprovados. Objetivo: Avaliar o impacto tardio do tratamento laparoscópico da endometriose profunda infiltrativa com ressecção segmentar colorretal. Métodos: Série de casos prospectiva com 46 pacientes submetidas ao tratamento laparoscópico para endometriose profunda infiltrativa com ressecção segmentar colorretal entre 2013 e 2016. Foram analisados sintomas ginecológicos, intestinais e a fertilidade no período pré-operatório, três e 12 meses ou mais após o procedimento. Resultados: Na entrevista pré-operatória, foram levantadas as prevalências de sintomas ginecológicos (87%), intestinais (80,4%) e de infertilidade (45,6%). No 3º mês pós-operatório, observou-se redução significativa da prevalência dos sintomas ginecológicos (p<0,001) e de sintomas intestinais, tenesmo (p=0,001) e disquesia (p=0,002). Após 12 meses ou mais observou-se diminuição significativa da prevalência de dismenorreia (p=0,001), de dispareunia profunda (p=0,041) e de dor pélvica crônica (p=0,011) além de disquesia (p=0,001) em relação ao período pré-operatório. As taxas de gravidez total e espontânea foram de 57,1% e 47,6%, respectivamente. Conclusão: O tratamento da endometriose profunda infiltrativa com ressecção segmentar colorretal proporcionou alívio precoce e tardio dos sintomas ginecológicos e intestinais. Os resultados sugerem impacto positivo sobre a fertilidade em pacientes inférteis.