Comparative analysis of SARS-CoV-2 variants Alpha (B.1.1.7), Gamma (P.1), Zeta (P.2) and Delta (B.1.617.2) in Vero-E6 cells: ultrastructural characterization of cytopathology and replication kinetics

Abstract This study compares the effects of virus-cell interactions among SARS-CoV-2 variants of concern (VOCs) isolated in Brazil in 2021, hypothesizing a correlation between cellular alterations and mortality and between viral load and transmissibility. For this purpose, reference isolates of Alpha, Gamma, Zeta, and Delta variants were inoculated into monolayers of Vero-E6 cells. Viral RNA was quantified in cell supernatants by RT‒PCR, and infected cells were analyzed by Transmission Electron Microscopy (TEM) for qualitative and quantitative evaluation of cellular changes 24, 48, and 72 hours postinfection (hpi). Ultrastructural analyses showed that all variants of SARS-CoV-2 altered the structure and function of mitochondria, nucleus, and rough endoplasmic reticulum of cells. Monolayers infected with the Delta variant showed the highest number of modified cells and the greatest statistically significant differences compared to those of other variants. Viral particles were observed in the cytosol and the cell membrane in 100 % of the cells at 48 hpi. Alpha showed the highest mean particle diameter (79 nm), and Gamma and Delta were the smallest (75 nm). Alpha and Gamma had the highest particle frequency per field at 48 hpi, while the same was observed for Zeta and Delta at 72 hpi and 24 hpi, respectively. The cycle threshold of viral RNA varied among the target protein, VOC, and time of infection. The findings presented here demonstrate that all four VOCs evaluated caused ultrastructural changes in Vero-E6 cells, which were more prominent when infection occured with the Delta variant.

A straightforward one-step strategy for SARS-CoV-2 diagnosis and screening of variants of concern: a multicentre study

BACKGROUND The prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs) has changed unevenly over time around the world. Although whole genome sequencing is the gold standard for virus characterisation, the discovery of alpha VOC causing spike gene target failure (SGTF) result, when tested using an reverse transcription real-time polymerase chain reaction (RT-qPCR) assay, has provided a simple tool for tracking the frequencies of variants. OBJECTIVES The aim of this study was to investigate if a multiplex RT-qPCR assay (BioM 4Plex VOC) could be used to detect SARS-CoV-2 and to perform a VOC screening test in a single reaction tube. Here, we present the multicentre study evaluating this assay. METHODS Twelve laboratories have participated in the multicentre study. The BioM 4Plex VOC was distributed to them with detailed instructions of how to perform the test. They were asked to test the BioM 4Plex VOC in parallel with their routine Commercial SARS-CoV-2 diagnostic assay. Additionally, they were requested to select SARS-CoV-2-positive samples with genome sequenced and lineage definition according to PANGO lineage classification. FINDINGS The BioM 4Plex VOC and commercial RT-PCR assay are equally effective in detecting SARS-CoV-2. Results revealed a specificity of 96.5-100% [95% confidence interval (CI)], a sensitivity of 99.8-100% (95% CI), and an accuracy of 99.8-100% (95% CI). A 99% concordance rate was found between results from the BioM 4Plex VOC and that from available genome sequencing data. MAIN CONCLUSIONS The BioM 4Plex VOC provides an effective solution to detect SARS-CoV-2 infections and screening for VOCs in a single reaction. It is a straightforward method to help us monitor the frequency and distribution of VOCs and develop strategies to better cope with the pandemics.

A straightforward one-step strategy for SARS-CoV-2 diagnosis and screening of variants of concern: a multicentre study

BACKGROUND The prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs) has changed unevenly over time around the world. Although whole genome sequencing is the gold standard for virus characterisation, the discovery of alpha VOC causing spike gene target failure (SGTF) result, when tested using an reverse transcription real-time polymerase chain reaction (RT-qPCR) assay, has provided a simple tool for tracking the frequencies of variants. OBJECTIVES The aim of this study was to investigate if a multiplex RT-qPCR assay (BioM 4Plex VOC) could be used to detect SARS-CoV-2 and to perform a VOC screening test in a single reaction tube. Here, we present the multicentre study evaluating this assay. METHODS Twelve laboratories have participated in the multicentre study. The BioM 4Plex VOC was distributed to them with detailed instructions of how to perform the test. They were asked to test the BioM 4Plex VOC in parallel with their routine Commercial SARS-CoV-2 diagnostic assay. Additionally, they were requested to select SARS-CoV-2-positive samples with genome sequenced and lineage definition according to PANGO lineage classification. FINDINGS The BioM 4Plex VOC and commercial RT-PCR assay are equally effective in detecting SARS-CoV-2. Results revealed a specificity of 96.5-100% [95% confidence interval (CI)], a sensitivity of 99.8-100% (95% CI), and an accuracy of 99.8-100% (95% CI). A 99% concordance rate was found between results from the BioM 4Plex VOC and that from available genome sequencing data. MAIN CONCLUSIONS The BioM 4Plex VOC provides an effective solution to detect SARS-CoV-2 infections and screening for VOCs in a single reaction. It is a straightforward method to help us monitor the frequency and distribution of VOCs and develop strategies to better cope with the pandemics.

Analysis of goal scoring patterns and match outcome during the Intercontinental Beach Soccer Cup Dubai 2019

Abstract Aim: To characterize the goal-scoring patterns and investigate the goal process on match outcome during the Intercontinental Beach Soccer Cup Dubai 2019. Methods: A set of 35 goal-scoring patterns were grouped into nine macro-categories: Match-period, Court-zone, Set-play, Open-play, Touching by players before the goal, Offensive method, Goalkeeper-line, Number of passes before the goal, and Ball trajectory. Match outcome in regular time was considered the matches resulting in a loss (n=16), draw (n=8), or win (n=16). The offensive sequences that resulted in the goal were analyzed in all 20 matches during the competition (n=138 goals). Results: The most goals were scored in Open-play (69%), during the 2nd and 3rd periods (36% for each), near to goal (Zone 4; 50%), preceded by 1-touch (67%) and 0-pass (29%), using positional attack (46%), without goalkeeper-line (68%), and with high-ball trajectory (51%). In addition, won matches presented a higher number of goals in Zone 4, 1-touch, Counterattack, 4v4 goal-successful, Receiving pass, Sand-touch, and High-ball compared to draw and loss matches (p<0.001−0.03; Effect Size [ES]=1.24−2.58, large). Conclusion: In summary, winning teams scored their goals mainly in open-play situations and without a goalkeeper-line, using counterattacks to achieve zones near the opponent's goals, and implementing a direct offensive style. In addition, goals scored were usually preceded by 1-touch, both through high-ball and sand-touch ball trajectory. Coaches and practitioners may consider these goal processes to train prescription and deep understanding of the process to goal in elite Beach soccer.

A Potential SARS-CoV-2 Variant of Interest (VOI) Harboring Mutation E484K in the Spike Protein Was Identified within Lineage B 1 1 33 Circulating in Brazil

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic in Brazil was dominated by two lineages designated as B.1.1.28 and B.1.1.33. The two SARS-CoV-2 variants harboring mutations at the receptor-binding domain of the Spike (S) protein, designated as lineages P.1 and P.2, evolved from lineage B.1.1.28 and are rapidly spreading in Brazil. Lineage P.1 is considered a Variant of Concern (VOC) because of the presence of multiple mutations in the S protein (including K417T, E484K, N501Y), while lineage P.2 only harbors mutation S:E484K and is considered a Variant of Interest (VOI). On the other hand, epidemiologically relevant B.1.1.33 deriving lineages have not been described so far. Here we report the identification of a new SARS-CoV-2 VOI within lineage B.1.1.33 that also harbors mutation S:E484K and was detected in Brazil between November 2020 and February 2021. This VOI displayed four non-synonymous lineage-defining mutations (NSP3:A1711V, NSP6:F36L, S:E484K, and NS7b:E33A) and was designated as lineage N.9. The VOI N.9 probably emerged in August 2020 and has spread across different Brazilian states from the Southeast, South, North, and Northeast regions.

Whole-genome sequences of influenza A(H3N2) viruses isolated from Brazilian patients with mild illness during the 2014 season

The influenza A(H3N2) virus has circulated worldwide for almost five decades and is the dominant subtype in most seasonal influenza epidemics, as occurred in the 2014 season in South America. In this study we evaluate five whole genome sequences of influenza A(H3N2) viruses detected in patients with mild illness collected from January-March 2014. To sequence the genomes, a new generation sequencing (NGS) protocol was performed using the Ion Torrent PGM platform. In addition to analysing the common genes, haemagglutinin, neuraminidase and matrix, our work also comprised internal genes. This was the first report of a whole genome analysis with Brazilian influenza A(H3N2) samples. Considerable amino acid variability was encountered in all gene segments, demonstrating the importance of studying the internal genes. NGS of whole genomes in this study will facilitate deeper virus characterisation, contributing to the improvement of influenza strain surveillance in Brazil.

Molecular findings from influenza A(H1N1)pdm09 detected in patients from a Brazilian equatorial region during the pandemic period

After the World Health Organization officially declared the end of the first pandemic of the XXI century in August 2010, the influenza A(H1N1)pdm09 virus has been disseminated in the human population. In spite of its sustained circulation, very little on phylogenetic data or oseltamivir (OST) resistance is available for the virus in equatorial regions of South America. In order to shed more light on this topic, we analysed the haemagglutinin (HA) and neuraminidase (NA) genes of influenza A(H1N1)pdm09 positive samples collected during the pandemic period in the Pernambuco (PE), a northeastern Brazilian state. Complete HA sequences were compared and amino acid changes were related to clinical outcome. In addition, the H275Y substitution in NA, associated with OST resistance, was investigated by pyrosequencing. Samples from PE were grouped in phylogenetic clades 6 and 7, being clustered together with sequences from South and Southeast Brazil. The D222N/G HA gene mutation, associated with severity, was found in one deceased patient that was pregnant. Additionally, the HA mutation K308E, which appeared in Brazil in 2010 and was only detected worldwide the following year, was identified in samples from hospitalised cases. The resistance marker H275Y was not identified in samples tested. However, broader studies are needed to establish the real frequency of resistance in this Brazilian region.

Epidemiological aspects of influenza A related to climatic conditions during and after a pandemic period in the city of Salvador, northeastern Brazil

During the influenza pandemic of 2009, the A(H1N1)pdm09, A/H3N2 seasonal and influenza B viruses were observed to be co-circulating with other respiratory viruses. To observe the epidemiological pattern of the influenza virus between May 2009-August 2011, 467 nasopharyngeal aspirates were collected from children less than five years of age in the city of Salvador. In addition, data on weather conditions were obtained. Indirect immunofluorescence, real-time transcription reverse polymerase chain reaction (RT-PCR), and sequencing assays were performed for influenza virus detection. Of all 467 samples, 34 (7%) specimens were positive for influenza A and of these, viral characterisation identified Flu A/H3N2 in 25/34 (74%) and A(H1N1)pdm09 in 9/34 (26%). Influenza B accounted for a small proportion (0.8%) and the other respiratory viruses for 27.2% (127/467). No deaths were registered and no pattern of seasonality or expected climatic conditions could be established. These observations are important for predicting the evolution of epidemics and in implementing future anti-pandemic measures.

Tratamento endovascular do aneurisma da aorta abdominal infrarrenal em pacientes com anatomia favorável para o procedimento: experiência inicial em um serviço universitário / Endovascular treatment of infrarenal abdominal aortic aneurysm in patients with favorable anatomy for the repair: initial experience in a university hospital

CONTEXTO: Desde sua introdução, em 1991, o reparo endovascular do aneurisma da aorta abdominal infrarrenal tem se tornado uma alternativa atraente para o tratamento dessa doença. Avaliar nossos resultados iniciais quanto à segurança e eficácia dessa técnica nos levou à realização deste estudo. OBJETIVOS: Analisar a mortalidade perioperatória, a sobrevida tardia, as reoperações, as taxas de perviedade e o comportamento do saco aneurismático em pacientes com anatomia favorável para a realização do procedimento. MÉTODOS: Trata-se de um estudo longitudinal, observacional e retrospectivo realizado entre outubro de 2004 e janeiro de 2009 com 41 pacientes que foram submetidos à correção endovascular do aneurisma de aorta abdominal infrarrenal por apresentarem anatomia favorável para o procedimento. Foram analisados os achados dos exames diagnósticos, o tratamento e o seguimento em todos os pacientes. RESULTADOS: Foram implantadas, com sucesso, 31 (75,6 por cento) próteses bifurcadas e 10 (24,5 por cento) monoilíacas, de 5 diferentes marcas. O diâmetro médio dos aneurismas fusiformes era de 62 mm. A mortalidade perioperatória foi de 4,8 por cento e a sobrevida tardia, 90,2 por cento. Durante o acompanhamento médio de 30 meses, 2 (4,8 por cento) pacientes necessitaram de reintervenção, um por migração da endoprótese e outro por vazamento tipo II. Dois (4,8 por cento) pacientes apresentaram oclusão de ramo da prótese. Oito (19,5 por cento) vazamentos foram diagnosticados e não houve nenhuma rotura dos aneurismas. CONCLUSÃO: Apesar do pequeno número de pacientes, os resultados observados parecem justificar a realização do procedimento endovascular nos pacientes com anatomia favorável.

BACKGROUND: Since its introduction in 1991, endovascular repair of infrarenal aortic aneurysms has become an attractive option to treat this disease. The evaluation of our initial results about safety and efficacy of this technique has led us to carry out this study. OBJECTIVES: To analyze perioperative mortality, late survival, reoperations, patency rates and the aneurysmal sac behavior in patients with favorable anatomy for this procedure. METHODS: A longitudinal, observational and retrospective study was conducted from October 2004 to January 2009, involving 41 patients with favorable anatomy for endovascular repair of infrarenal aortic aneurysm. The findings of diagnostic exams, the treatment and follow-up results were analyzed. RESULTS: Thirty-one (75.6 percent) bifurcated and 10 (24.5 percent) mono-iliac prosthesis of five different brands were successfully implanted. The average diameter of the fusiform aneurysms was 62 mm. Perioperative mortality rate was 4.8 percent and late survival was 90.2 percent. During the mean follow-up period of 30 months, two (4.8 percent) patients needed re-intervention, one for migration of the endoprosthesis and the other for type II endoleak. Two (4.8 percent) patients presented occlusion of an endograft branch. Eight (19.5 percent) endoleaks were diagnosed and there was no aneurysm rupture. CONCLUSION: Despite the small number of patients, the results seem to justify the performance of endovascular therapy in patients with favorable anatomy.

Implante o no implante del componente patelar en el reemplazo total de rodilla: estudio prospectivo con ocho años de seguimiento / Should I resurface the patella?: A prospective study

Introducción: La indicación de implantar el componente patelar (ICP) en el reemplazo total de rodilla (RTR) es controvertida. El objetivo del presente trabajo consistió en analizar prospectivamente dos grupos de pacientes con RTR: uno con ICP y otro sin él. Materiales y métodos: En el período comprendido entre mayo de 1990 y noviembre de 2001 se practicaron 100 RTR, sistematizando dos grupos de 50 casos cada uno: a) con ICP y b) sin ICP. Se establecieron criterios de selección de los pacientes. Se emplearon dos variedades de implante: a) con tróclea “anatómica” y b) con tróclea “universal”. El período de seguimiento fue mayor de 6 años. Se aplicó el puntaje de la Knee Society. Se elaboró una encuesta de satisfacción comparativa aplicable a los pacientes operados bilaterales. Resultados: Se registraron resultados estadísticamente significativos más favorables (mejor puntaje de la Knee Society, menor incidencia de dolor en la cara anterior de la rodilla y encuesta de satisfacción positiva) en los pacientes en quienes se implantó el CP. Estos mejores resultados fueron apreciados globalmente y resultaron independientes del diseño protésico empleado. Conclusiones: Se documentó que el diseño protésico con tróclea “anatómica” ofreció menor riesgo de problemas patelofemorales en los casos en los cuales el componente patelar no se implantó.

Dissecção isolada do tronco celíaco: relato de caso / Isolated dissection of the celiac artery: a case report

A dissecção espontânea isolada do tronco celíaco sem a dissecção concomitante da aorta é uma condição rara, pouco descrita na literatura. O objetivo do presente trabalho é descrever um caso dessa entidade clínica em um paciente masculino, 74 anos, assintomático, cujo diagnóstico foi feito por ultrassonografia e confirmado com angiotomografia computadorizada. O paciente tem sido acompanhado com sucesso mediante observação clínica por um período de 25 meses.

The isolated spontaneous dissection of the celiac artery without the concomitant dissection of the aorta is a rare condition seldomly described in the literature. The objective of the present study is to describe a case of this clinical entity in a 74-year-old, male patient, who was asymptomatic, and whose diagnosis was established by means of ultrasound and confirmed using computed angiotomography. The patient has been successfully followed up by means of clinical management for a period of 25 months.

Análise espectral segmentar no seguimento de pacientes revascularizados / Sequential spectrum analysis in the follow-up of revascularized patients

CONTEXTO: Pacientes tratados por revascularização arterial (enxertos e angioplastias) nos membros inferiores acometidos por doença arterial oclusiva periférica foram seguidos por até 2 anos pós-tratamento usando ultrassom vascular (análise espectral segmentar, AES). OBJETIVO: Demonstrar que a AES pode ser utilizada no seguimento dos pacientes tratados por doença arterial oclusiva periférica. MÉTODOS: As medidas de AES realizadas foram: velocidade sistólica de pico, índice de pulsatilidade e forma da onda de velocidade de fluxo. Essas foram comparadas em cada paciente no pré e pós-tratamento (com intervalos de 3 meses) para diagnóstico de perviedade. RESULTADOS: Medidas realizadas no pós-operatório nas artérias imediatamente distais aos segmentos tratados mostraram aumento consistente de velocidade sistólica de pico e índice de pulsatilidade com mudanças na forma da onda de velocidade de fluxo de unifásica para bi ou trifásica. A velocidade sistólica de pico e o índice de pulsatilidade aumentaram respectivamente em 92,26 e 98,2 por cento (tratamentos no segmento aorto-ilíaco), em 112,83 e 62,39 por cento (tratamentos no segmento fêmoro-poplíteo) e em 149,08 e 28,8 por cento (tratamentos no segmento poplíteo-tibial). Tais mudanças nos padrões de velocidade de fluxo ocorreram em todos os pacientes e permaneceram quase inalteradas enquanto os tratamentos estivessem pérvios. Quando ocorria falência nos tratamentos (oclusões ou estenoses hemodinamicamente significantes), os parâmetros caíam a níveis similares aos de antes do tratamento. Se a falência do tratamento era corrigida por nova revascularização (enxerto ou angioplastia), os parâmetros de AES voltavam a se comportar como após o tratamento inicial. CONCLUSÃO: A AES pode ser usada no seguimento dos pacientes com revascularização dos membros devido a doença arterial oclusiva periférica, demonstrando tanto a perviedade quanto a falência do tratamento.

BACKGROUND: Patients treated for peripheral arterial occlusive disease with lower limb revascularization (angioplasty or grafts) were followed up for a 2-year period after treatment with vascular ultrasound (segmental spectrum analysis, SSA). OBJECTIVE: To demonstrate that SSA can be used in the follow-up of patients treated for peripheral arterial occlusive disease. METHODS: The following SSA measurements were performed: peak systolic velocity (PSV), pulsatility index (PI), and flow velocity waveform (FVW). These measurements were performed and compared for each patient during the pre- and post-treatment periods (with 3-month intervals) for diagnosis of vascular patency. RESULTS: Measurements performed postoperatively in the arteries immediately distal to the treated segments showed a significant increase in PSV and PI, with a change of the FVW from a monophasic to a biphasic or triphasic configuration. PSV and PI increased, respectively, 92.26 and 98.2 percent (intervention in the aortoiliac segment), 112.83 and 62.39 percent (intervention in the femoral-popliteal segment), and 149.08 and 28.8 percent (in the popliteal-tibial segment). Such changes in flow velocity patterns occurred in all patients and remained almost unaltered during the period of patient follow up. When treatment failed (hemodynamically significant occlusion or stenosis), parameters fell to levels similar to those observed prior to treatment. If treatment failure was corrected by new revascularization (angioplasty or grafts), SSA parameters returned to patterns observed after initial treatment. CONCLUSION: SSA can be used in the follow-up of patients with lower limb revascularization due to peripheral arterial occlusive disease, demonstrating treatment patency and failure.

Evolucion del reemplazo total de rodilla con componente tibial de polietileno a mediano plazo / Medium-term evolution of total knee replacement with polyethylene tibial component

Introduccion: En los inicios de la cirugía artroplástica protésica de la rodilla el componente tibial era de polietileno en su totalidad; con el advenimiento de las bases tibiales metálicas ese diseño fue dejado a un lado. En la actualidad la indicación electiva de dicho implante es motivo de revisión. El objetivo del presente trabajo fue evaluar los resultados clínico-radiológicos obtenidos mediante el empleo de un diseño protésico de rodilla con base tibial “todo de polietileno” con un seguimiento de entre 3 y 5 años. Materiales y métodos: En el período comprendido entre febrero de 2000 y enero de 2002 se realizaron 78 reemplazos totales de rodilla con prótesis PFC variedad “All Poly”® (J&J, DePuy, Warsaw, IN) en 77 pacientes. Las características demográficas y clínicas de los pacientes eran homogéneas. La edad promedio de los participantes era de 79,4 años; 79 por ciento de ellos eran mujeres. Un evaluador externo analizó los resultados mediante los siguientes sistemas de valoración: Knee Society, cuestionario Oxford y la prueba del Hospital for Special Surgery. Resultados: Se observó una importante mejoría funcional tanto subjetiva como objetiva de los pacientes en la evolución a mediano plazo con los RTR “All Poly” ®. No fue posible documentar signos de desgaste del componente tibial mediante el procedimiento radiográfico. Las complicaciones identificadas en el grupo estudiado no tuvieron vinculación causal con el diseño protésico: una tromboembolia pulmonar, una amputación por pie diabético y una infección tardía. Conclusiones: En el grupo estudiado se han registrado resultados satisfactorios a corto y mediano plazo con losdiseños de polietileno. Por su costo comparativamente menor respecto del correspondiente a las bases tibiales metálicas resulta una indicación razonable en los pacientes de edad avanzada con menor demanda funcional y capital óseo adecuado.

Complicações arteriais da síndrome do desfiladeiro torácico / Arterial complications of thoracic outlet syndrome

As manifestações clínicas da síndrome do desfiladeiro torácico são predominantemente neurológicas, sendo as complicações arteriais raras, mas potencialmente graves. Entre elas, devemos citar os aneurismas com complicações embólicas e a trombose. Os autores relatam o caso de uma mulher de 37 anos com costela cervical bilateral que apresentou embolia no membro superior direito originada de um aneurisma pós-estenótico da artéria subclávia direita, além de apresentar ectasia da subclávia esquerda também por compressão.

The clinical manifestations of thoracic outlet syndrome are mainly neurological. Although arterial complications are rare, they are potentially severe. Among these are aneurysms associated with embolism and thrombosis. The authors report a case of a 37 year-old woman with bilateral cervical rib that developed embolism in the right upper limb from a poststenotic right subclavian artery aneurysm and dilatation of the left subclavian artery, both due to compression.

Tratamento endovascular de aneurisma de artéria poplítea / Endovascular treatment of popliteal artery aneurysm

CONTEXTO: Dos aneurismas periféricos, o da artéria poplítea é o mais freqüente, correspondendo a 70 a 80 por cento dos casos. O tratamento cirúrgico convencional consta de exclusão do aneurisma e interposição de enxerto em ponte ou de ressecção parcial ou total do aneurisma e reconstrução arterial com enxerto em continuidade. O tratamento endovascular surgiu como uma alternativa ao reparo convencional. OBJETIVO: Avaliar o uso de endoprótese para o tratamento endovascular do aneurisma de artéria poplítea. METODOLOGIA: Num total de 17 pacientes, todos do sexo masculino, 11 foram tratados por técnica endovascular, utilizando-se próteses Hemobahn e Viabahn. RESULTADOS: Um paciente apresentou pseudo-aneurisma no pós-operatório imediato. Dentre as complicações tardias, um paciente apresentou endoleak distal da prótese após 7 meses, e houve oclusão da endoprótese em outro. Os nove pacientes restantes apresentaram controle de eco-Doppler satisfatório aos 20 meses, resultando em uma perviedade primária de 90 por cento em um período médio de 27 meses de seguimento. CONCLUSÃO: O tratamento endovascular para aneurisma de artéria poplítea é factível e apresenta algumas vantagens em relação ao tratamento aberto, como menor tempo de internação e de recuperação.

BACKGROUND: The most commonly occurring aneurysms in the periphery are those involving the popliteal artery. They comprise 70-80 percent of all such aneurysms. Conventional aneurysm repair consists of either opening the aneurysm sac and interposing a bypass graft or aneurysm ligation combined with bypass grafting. Endovascular treatment is an alternative to conventional repair. OBJECTIVE: To evaluate use of stent graft in the endovascular treatment of popliteal artery aneurysms. METHODS: We analyzed 17 male patients; of these, 11 were treated with endovascular stent graft, using Hemobahn and Viabahn stent grafts. RESULTS: One patient had pseudoaneurysm in the immediate postoperative period. Among late complications, one patient had distal endoleak after 7 months, and there was stent graft occlusion in another patient. The remaining nine patients had satisfactory Doppler ultrasonography control at 20 months, which resulted in a primary patency of 90 percent over mean follow-up time of 27 months. CONCLUSION: Endovascular repair of a popliteal artery aneurysm is feasible and has some advantages compared with the open treatment, such as shorter hospital stay and recovery.

Artroplastia de rodilla postosteotomia: revision casuistica banco de protesis 1986-2001 / Total knee replacement after osteotomy: revision between 1986 to 2001

Introduccion: Las artroplastias postosteotomia son cirugias de mayor complejidad, por presentar cicatrices previas, defectos oseos y un aparato extensor modificado. Material y metodos: Se evaluaron 2630 artroplastias entre 1986 y 2001 (6 por ciento de las cirugias). Valguizantes 142 y varizantes 11,6. Seguimiento promedio de 5,3 años. Se realizo evaluacion con protocolo y rx, utilizando el score del Hospital for Special Surgery (HSS). Resultados: El tiempo promedio de sobrevida de las osteotomias fue de 8 años, en un rango de 1 a 30 años. Se realizo, Snip de Insall en 26 casos y osteotomia de Whiteside en 3 casos; 1 alargamiento y 1 liberacion de cuadriceps. El 6,5 por ciento de las cirugias requirio protesis especiales. 78 casos tenian un HSS preoperatorio malo, 68 regular y 4 buenos. 103 casos mostraron un HSS postoperatorio excelente, 28 buenos, 3 regulares y 9 malos. Complicaciones: 11 por ciento, 9 casos de infeccion profunda (5,8 por ciento), 1 aguda y 8 tardias. Necrosis de piel y dificultad de cicatrizacion, 2 casos (1,3 por ciento). Desinsercion tendon rotuliano, 2 casos (1,3 por ciento). Falsa ruta, 2 casos (1,3 por ciento). Aflojamiento aseptico, 2 casos (1,3 por ciento). Conclusiones: Indice de complicaciones similar a las cirugias de revision. Se debe realizar una incision apropiada, asi como elegir el tipo de osteotomia osea a realizar, teniendo en mente la futura eventual artroplastia.

Serological analysis reveals circulation of influenza C viruses, Brazil

Foi estudada no Rio de Janeiro, RJ, Brasil, a circulação de vírus influenza C detectando-se níveis significativos de anticorpos (56,7 por cento) através de reação de inibição de hemaglutinação, o qual é considerada com padrão para estudos em influenzavírus

Masculino e feminino nas organizaçöes / Masculine and feminine in the organizations

Relata que a análise junguiana contribui de forma significativa para o estudo do gênero e da sexualidde nas organizaçöes. O conceito de individuaçäo e a noçäo de arquétipos säo de interesse particular para a pesquisa das masculinidades, feminilidades e sexualidade nas organizaçöes. Afirma que esse é o caminha que procura trilhar. A idéia é demonstrar o relacionamento entre gênero e sexualidade com poder e cultura organizacional näo como um segmento mas como alguma coisa que está presente na maior parte do texto.

Os pressupostos básicos de Schein e a fronteira entre a psicanálise e a cultura organizacional / The Schein basic assumptions and the frontiers between the psychoanalysis and organizational culture

Discorre sobre os pressupostos de Schein para cultura organizacional. (NMPM)