Abstract Fifty-five watermelon accessions were inoculated in pots using Fusarium oxysporum f. sp. niveum chlamydospores in a completely randomized design with five replications. Among the 42 accessions that were resistant, twelve accessions with a mean score ≤1 were selected for morpho-agronomic characterization. ‘Sugar Baby’ and ‘Charleston Gray’ were used as controls. Field research was conducted over two production cycles in a randomized block design with three replications and five plants per plot. For the characterization 13 quantitative agronomic traits were used. The dissimilarity measures were obtained by the sum of the matrices of standardized mean Euclidean distance. Coefficients of variation ranged from 5.33% (number of days until 50% of plants with at least one female flower) and 17.20% (mass of characterized fruit). In the second cycle, a reduction in days was observed for the flowering. For soluble solids content, the accession BGH-UNIVASF 40 was statistically equal to the commercial cultivars in the second cycle. Accessions were grouped similarly using two grouping methods, Tocher and the farthest neighbor method. The most promising accessions were BGH-UNIVASF 40, 169, 177 and 210 for use in future hybridizations. BGH-UNIVASF 76, 128 and 185 (Citrullus lanatus var. citroides) can be used as resistant Fusarium wilt rootstocks.

Resumo Estudo de tendência temporal com o objetivo de avaliar as desigualdades no tabagismo e no consumo abusivo de álcool, considerando a escolaridade como proxy de nível socioeconômico, de acordo com sexo e regiões brasileiras. Foram utilizados dados do Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico (Vigitel) coletados entre 2006 e 2017. Os desfechos foram o consumo abusivo de bebidas alcoólicas e o fumo. As desigualdades foram avaliadas com base na escolaridade, com dupla estratificação por sexo e regiões brasileiras. Para avaliar a tendência das prevalências dos desfechos e suas desigualdades foi usada a regressão linear ponderada pelos quadrados mínimos da variância. A prevalência de consumo abusivo de álcool aumentou em mulheres, de 7,8% (2006) para 12,2% (2017), e foi maior sempre entre os mais escolarizados. A prevalência de tabagismo diminuiu para homens e mulheres e foi maior sempre entre os menos escolarizados. A desigualdade no consumo de álcool entre os grupos de escolaridade parece ter aumentado ao longo do tempo, com maior magnitude entre as mulheres, mas a desigualdade no tabagismo parece estar diminuindo. Em algumas regiões do país, as medidas de desigualdade sugerem estabilidade e em outras um aumento da desigualdade para o consumo de álcool (Sudeste, Sul e Centro-oeste, entre as mulheres) e diminuição para o tabagismo (todas as regiões, exceto Sudeste, entre os homens; Nordeste e Centro-oeste, entre as mulheres). Apesar dos avanços na redução do tabagismo, as desigualdades na escolaridade persistem e estão presentes também em relação ao álcool. Os desfechos têm comportamentos opostos, portanto, estratégias devem ser focadas em cada um dos problemas, a fim de reduzir as desigualdades existentes.

Abstract: This was a time trend study aimed at assessing inequalities in smoking and abusive alcohol consumption, considering schooling as a proxy for socioeconomic status, according to sex and region of Brazil. The study used data from the Risk and Protective Factors Surveillance System for Chronic Non-Comunicable Diseases Through Telephone Interview (Vigitel) survey collected from 2006 to 2017. The outcomes were abusive alcohol consumption and smoking. The inequalities were assessed based on schooling, with double stratification by sex and major geographic region. Weighted linear least squares regression was used to assess the trend in prevalence of outcomes and their inequalities. Prevalence of abusive alcohol consumption increased in women, from 7.8% in 2006 to 12.2% in 2017 and was consistently higher among individuals with more schooling. Prevalence of smoking decreased in both men and women and was consistently higher among those with less schooling. Inequality in alcohol consumption between schooling groups appears to have increased over time, higher in women, but inequality in smoking appears to have decreased. In some regions of Brazil, the measures of inequality suggest stability and in others an increase in inequality in alcohol consumption (Southeast, South, and Central regions in women) and a decrease in smoking (all regions except the Southeast in men; Northeast and Central in women). Despite the strides in smoking reduction, inequalities persist in schooling and are also present in alcohol consumption. The outcomes show opposite trends, so strategies should focus on each of the problems in order to reduce existing inequalities.

Resumen: Estudio de tendencia temporal, con el objetivo de evaluar las desigualdades en el tabaquismo y consumo abusivo de alcohol, considerando la escolaridad como proxy de nivel socioeconómico, de acuerdo con el sexo y regiones brasileñas. Se utilizaron datos de Vigilancia de Factores de Riesgo y Protección para Enfermedades Crónicas No Transmisibles por Entrevista Telefónica (Vigitel), recogidos entre 2006 y 2017. Los resultados fueron el consumo abusivo de bebidas alcohólicas y tabaco. Las desigualdades se evaluaron a partir de la escolaridad, con doble estratificación por sexo y regiones brasileñas. Para evaluar la tendencia de las prevalencias de los resultados y sus desigualdades se utilizó la regresión lineal por mínimos cuadrados ponderados de la variancia. La prevalencia de consumo abusivo de alcohol aumentó en mujeres de 7,8% (2006) a 12,2% (2017) y fue siempre mayor entre los más escolarizados. La prevalencia de tabaquismo disminuyó en hombres y mujeres, y siempre fue mayor entre los menos escolarizados. La desigualdad en el consumo de alcohol entre los grupos de escolaridad parece que ha aumentado a lo largo del tiempo, con mayor magnitud entre las mujeres, pero la desigualdad en el tabaquismo parece estar disminuyendo. En algunas regiones del país, las medidas de desigualdad sugieren estabilidad y en otras un aumento de la desigualdad en el consumo de alcohol (Sudeste, Sur y Centro-oeste, entre las mujeres) y disminución en el tabaquismo (todas las regiones, excepto la Sudeste, entre los hombres; Nordeste y Centro-oeste, entre las mujeres). A pesar de los avances en la reducción del tabaquismo, las desigualdades en la escolaridad persisten y están presentes también en relación con el alcohol. Los resultados tienen comportamientos opuestos, por lo tanto, las estrategias deben centrarse en cada uno de los problemas, a fin de reducir las desigualdades existentes.

Resumo Estudo de tendência temporal com o objetivo de avaliar as desigualdades no tabagismo e no consumo abusivo de álcool, considerando a escolaridade como proxy de nível socioeconômico, de acordo com sexo e regiões brasileiras. Foram utilizados dados do Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico (Vigitel) coletados entre 2006 e 2017. Os desfechos foram o consumo abusivo de bebidas alcoólicas e o fumo. As desigualdades foram avaliadas com base na escolaridade, com dupla estratificação por sexo e regiões brasileiras. Para avaliar a tendência das prevalências dos desfechos e suas desigualdades foi usada a regressão linear ponderada pelos quadrados mínimos da variância. A prevalência de consumo abusivo de álcool aumentou em mulheres, de 7,8% (2006) para 12,2% (2017), e foi maior sempre entre os mais escolarizados. A prevalência de tabagismo diminuiu para homens e mulheres e foi maior sempre entre os menos escolarizados. A desigualdade no consumo de álcool entre os grupos de escolaridade parece ter aumentado ao longo do tempo, com maior magnitude entre as mulheres, mas a desigualdade no tabagismo parece estar diminuindo. Em algumas regiões do país, as medidas de desigualdade sugerem estabilidade e em outras um aumento da desigualdade para o consumo de álcool (Sudeste, Sul e Centro-oeste, entre as mulheres) e diminuição para o tabagismo (todas as regiões, exceto Sudeste, entre os homens; Nordeste e Centro-oeste, entre as mulheres). Apesar dos avanços na redução do tabagismo, as desigualdades na escolaridade persistem e estão presentes também em relação ao álcool. Os desfechos têm comportamentos opostos, portanto, estratégias devem ser focadas em cada um dos problemas, a fim de reduzir as desigualdades existentes.

Abstract: This was a time trend study aimed at assessing inequalities in smoking and abusive alcohol consumption, considering schooling as a proxy for socioeconomic status, according to sex and region of Brazil. The study used data from the Risk and Protective Factors Surveillance System for Chronic Non-Comunicable Diseases Through Telephone Interview (Vigitel) survey collected from 2006 to 2017. The outcomes were abusive alcohol consumption and smoking. The inequalities were assessed based on schooling, with double stratification by sex and major geographic region. Weighted linear least squares regression was used to assess the trend in prevalence of outcomes and their inequalities. Prevalence of abusive alcohol consumption increased in women, from 7.8% in 2006 to 12.2% in 2017 and was consistently higher among individuals with more schooling. Prevalence of smoking decreased in both men and women and was consistently higher among those with less schooling. Inequality in alcohol consumption between schooling groups appears to have increased over time, higher in women, but inequality in smoking appears to have decreased. In some regions of Brazil, the measures of inequality suggest stability and in others an increase in inequality in alcohol consumption (Southeast, South, and Central regions in women) and a decrease in smoking (all regions except the Southeast in men; Northeast and Central in women). Despite the strides in smoking reduction, inequalities persist in schooling and are also present in alcohol consumption. The outcomes show opposite trends, so strategies should focus on each of the problems in order to reduce existing inequalities.

Resumen: Estudio de tendencia temporal, con el objetivo de evaluar las desigualdades en el tabaquismo y consumo abusivo de alcohol, considerando la escolaridad como proxy de nivel socioeconómico, de acuerdo con el sexo y regiones brasileñas. Se utilizaron datos de Vigilancia de Factores de Riesgo y Protección para Enfermedades Crónicas No Transmisibles por Entrevista Telefónica (Vigitel), recogidos entre 2006 y 2017. Los resultados fueron el consumo abusivo de bebidas alcohólicas y tabaco. Las desigualdades se evaluaron a partir de la escolaridad, con doble estratificación por sexo y regiones brasileñas. Para evaluar la tendencia de las prevalencias de los resultados y sus desigualdades se utilizó la regresión lineal por mínimos cuadrados ponderados de la variancia. La prevalencia de consumo abusivo de alcohol aumentó en mujeres de 7,8% (2006) a 12,2% (2017) y fue siempre mayor entre los más escolarizados. La prevalencia de tabaquismo disminuyó en hombres y mujeres, y siempre fue mayor entre los menos escolarizados. La desigualdad en el consumo de alcohol entre los grupos de escolaridad parece que ha aumentado a lo largo del tiempo, con mayor magnitud entre las mujeres, pero la desigualdad en el tabaquismo parece estar disminuyendo. En algunas regiones del país, las medidas de desigualdad sugieren estabilidad y en otras un aumento de la desigualdad en el consumo de alcohol (Sudeste, Sur y Centro-oeste, entre las mujeres) y disminución en el tabaquismo (todas las regiones, excepto la Sudeste, entre los hombres; Nordeste y Centro-oeste, entre las mujeres). A pesar de los avances en la reducción del tabaquismo, las desigualdades en la escolaridad persisten y están presentes también en relación con el alcohol. Los resultados tienen comportamientos opuestos, por lo tanto, las estrategias deben centrarse en cada uno de los problemas, a fin de reducir las desigualdades existentes.

RESUMO: A mastite é uma doença multifatorial e é considerada um dos problemas mais importantes na indústria de laticínios no mundo todo. A condição é caracterizada pela redução de leite e várias anormalidades na glândula mamária. O objetivo deste estudo foi relatar um surto de mastite gangrenosa causada por Staphylococcus haemolyticus multirresistente em um rebanho ovino Santa Inês. Dezoito ovelhas foram afetadas e cinco delas com quadro clínico severo foram examinadas. O quadro clínico-patológico era variável quanto a severidade e consistia em apatia, anorexia, magreza, pelos opacos e quebradiços e vasos episclerais aparentes e ingurgitados. As ovelhas apresentavam glândulas aumentadas, firmes e dolorosas. Macroscopicamente, as principais lesões consistiam em mastite gangrenosa e microscopicamente havia necrose do parênquima glandular, trombose e fibrose. Amostras de leite de uma das cinco ovelhas severamente afetadas foram coletadas e cultivadas sob incubação aeróbica ou microaerofílica a 37°C por 24 horas em ágar sangue de ovelha. As colônias obtidas foram então submetidas ao MALDI-TOF para especiação. Além disso, as colônias foram submetidas a um teste de suscetibilidade antimicrobiana e foi realizada a genotipagem de fatores de virulência e genes de resistência. Os isolados apresentaram multirresistência antimicrobiana por serem resistentes a sete dos 13 antibióticos testados. Os isolados também foram positivos para dois genes enterotoxigênicos estafilocócicos (sec e see) e proteína B de ligação à fibronectina (fnbB).

ABSTRACT: Mastitis is a multifactorial disease and considered one of the most critical problems in the dairy industry worldwide. The condition is characterized by reduced milk and several abnormalities in the mammary gland. This study aimed to report an outbreak of gangrenous mastitis caused by multidrug-resistant Staphylococcus haemolyticus in a Santa Inês sheep herd. Eighteen sheep were affected, and five of them with severe clinical pictures were examined. The clinical and pathological picture were variable and characterized by apathy, anorexia, emaciation, opaque and brittle hair, apparent and congested episcleral vessels, and hyperthermia. These ewes had enlarged, firm, and painful mammary glands. Macroscopically, these lesions consisted of severe gangrenous mastitis, and microscopically, the primary lesions consisted of necrosis, thrombosis, and fibrosis of the mammary parenchyma. Milk samples from one of the five severely affected ewes were collected and cultured under aerobic or microaerophilic incubation at 37°C for 24 hours on sheep blood agar. The obtained colonies were then submitted to MALDI-TOF for speciation. The colonies were also submitted to an antimicrobial susceptibility test, genotyping of virulence factors and resistance genes were also performed. The isolates showed antimicrobial multiresistance since they were resistant to seven out of 13 tested antibiotics. The isolates were also positive for two staphylococcal enterotoxigenic genes (sec and see) and fibronectin-binding protein B (fnbB).

Objective: We aimed to investigate the mediating effect of violence by a family member or acquaintance on biological sex, depression and suicidal ideation. Methods: We used data from the 2013 Brazilian National Health Survey, a cross-sectional nationwide survey. Major depressive episode and suicidal ideation were evaluated with the Patient Health Questionnaire. Violence victimization and other sociodemographic variables were self-reported. We used logistic regression to estimate the OR, 95%CI and G-computation to calculate the natural direct and indirect effects. Results: A total of 60,202 individuals were evaluated. Women had higher prevalences of major depressive episode (OR = 2.36; 95%CI 2.03-2.74), suicidal ideation (OR = 2.02; 95%CI 1.73-2.36) and violence victimization (OR = 1.73; 95%CI 1.45-2.06). The mediation analysis showed that 10.6% of the association between sex and major depressive episode and 8.0% of the association between sex and suicidal ideation is explained by violence. Conclusions: Women in Brazil have an increased risk of major depressive episode and suicidal ideation, and this association is mediated, in part, by the fact that they suffer more violence from family members or acquaintances.

Objective: To evaluate the association between social and health contextual variables, and between major depressive episodes (MDE) and suicidal thoughts in Brazilian adults. Methods: This population-based cross-sectional study used data from the 2013 National Health Survey (Pesquisa Nacional de Saúde). The Patient Health Questionnaire was used to evaluate the presence of MDE and suicidal thoughts. We used number of Family Health Strategy teams (FHS) per 20,000 state population, number of Psychosocial Care Centers (Centros de Atenção Psicossocial [CAPS]) per 1,000 state population, gross domestic product (GDP), and Gini index for each Brazilian state as contextual variables. Multilevel logistic regression models were used to calculate OR and the intraclass correlation coefficient (ICC). Results: Prevalence of MDE and suicidal thoughts was 4.1% (95%CI 3.8-4.4) and 3.8% (95%CI 3.5-4.1), respectively. Multilevel regression models showed an ICC of 1.1% for MDE (95%CI 0.5-2.3) and 1.3% for suicidal thoughts (95%CI 0.6-2.6). Neither GDP, Gini, FHS, or CAPS showed evidence of association with the outcomes. Conclusions: In general, contextual variables, within each Brazilian state, do not seem to affect the prevalence of MDE and suicidal thoughts.

O objetivo deste estudo foi avaliar a influência do espaçamento e da cobertura morta sobre a produção da biomassa, composição química e produção do óleo essencial de erva-baleeira. Utilizou-se o delineamento de blocos casualizados, em esquema fatorial 2×2: dois espaçamentos (1.6 × 0.5 m e 1.0 × 0.5 m), com e sem cobertura morta, sendo utilizadas cinco repetições. Ao final, a combinação entre espaçamento e presença e ausência de cobertura não influenciaram na altura e diâmetro do caule. No entanto, influenciou na matéria fresca: 8765.00 kg ha-1 (1.0 × 0.5 m, com cobertura) e 6112.50 kg ha-1 (1.6 × 0.5 m, sem cobertura). O espaçamento 1.0 × 0.5 m foi o que proporcionou maior matéria seca (3052.14 kg ha-1). Para a produção de óleo essencial, a combinação do espaçamento de 1.0 × 0.5 m, com cobertura proporcionou maior produção (484.50 kg ha-1). Foram detectados 27 compostos dos quais 23 foram identificados, sendo a maior parte sesquiterpenos e monoterpenos. O α-pineno e o β-cariofileno apresentaram maiores abundâncias em todas as amostras, independente do tratamento. Os teores de α-humuleno e β-cariofileno, que são os dois marcadores químicos da espécie, não diferiram estatisticamente. Em todos os tratamentos, o teor de α-humuleno foi suficiente para atender às exigências da indústria farmacêutica. Assim a alteração no espaçamento e na cobertura do solo influencia na produção do óleo essencial, e da biomassa, porém não influencia nos teores do α-humuleno e do β-cariofileno.

The objective of this study was to evaluate the influence of spacing and mulch on biomass production, chemical composition and production of essential oil of tropical black sage. A randomized block design was used in a 2×2 factorial scheme: two spacings (1.6 × 0.5 m and 1.0 × 0.5 m), with and without mulch, using five replications. In the end, the combination of spacing and presence and absence of mulch did not influence the height and diameter of the stem. However, it has influenced fresh matter: 8765.00 kg ha-1 (1.0 × 0.5 m, with mulch) and 6112.50 kg ha-1 (1.6 × 0.5 m, without mulch). The spacing 1.0 x 0.5 m was what provided higher dry matter (3052.14 kg ha-1). For the production of essential oil, the combination of spacing of 1.0 × 0.5 m, with mulch provided greater production (484.50 kg ha-1). Twenty-seven compounds were detected, of which 23 were identified, most of which were sesquiterpenes and monoterpenes. The α-pinene and the β-caryophyllene showed higher abundances in all samples, regardless of the treatment. The contents of α-humulene was sufficient to meet the requirements of the pharmaceutical industry. Thus, the alteration in soil spacing and mulch influences the production of essential oil and biomass, but it does not influence the relatives amount of the α-humulene and of the β-caryophyllene.

Animals show behavioral and physiological changes that emerge in response to environmental perturbations (i.e., emergency life-history stages). In this study, we investigate the effects of light intensity on aggressive encounters and social stability in groups of adult male Nile tilapia, Oreochromis niloticus (Linnaeus, 1758). The study compared the behavior observed under low (280.75 ± 50.60 lx) and high (1394.14 ± 520.32 lx) light intensities, with 12 replicates for each treatment. Adult fish were isolated in 36-L aquaria for 96 hours, and three males were grouped for 11 days in 140-L aquaria. Agonistic behavior was video-recorded (10 min/day) on the 3rd, 5th, 7th, and 9th day to quantify aggressive interactions and social stability. There was an effect of light intensity and day of observation on the total number of agonistic behaviors performed by the fish group. Besides, increased frequency of aggressive interactions (the sum of the four sessions) by the alpha, beta and gamma fish occurred at the higher light intensity. The dominance ranks of the fish remained unchanged across the observation sessions under both the low and high light intensities. We concluded that enhanced light intensity has a cumulative effect that increases the aggressiveness of the Nile tilapia but that this effect is not sufficiently strong to destabilize the social hierarchy.

O objetivo do presente estudo é avaliar o papel das colinesterases como marcadores inflamatórios nas fases aguda e crônica da infecção por T. evansi em coelhos infectados experimentalmente. Foram utilizados 12 coelhos adultos, fêmeas, da raça Nova Zelândia, divididos em dois grupos: um grupo controle, com seis animais (coelhos 1-6), e um grupo infectado, com seis animais (coelhos 7-12). Os animais pertencentes ao grupo infectados receberam, pela via intraperitoneal, 0,5 mL de sangue de rato contendo 108 tripanossomas por animal. Amostras do sangue utilizado para avaliação das colinesterases foram coletadas nos dias 0, 2, 7, 12, 27, 42, 57, 87, 102 e 118 pós-inoculação (PI). Aumento (P<0,05) na atividade da butirilcolinesterase (BChE) e da acetilcolinesterase foi observado no sangue nos dias 7 e 27 (PI), respectivamente e não foram observadas diferenças na atividade da colinesterase em outros períodos. Nenhuma diferença significativa na atividade da AChE (P>0,05) foi observada nas estruturas encefálicas. O aumento de atividade da AChE e BChE provavelmente tenha finalidade pró-inflamatória, a fim de reduzir as concentrações de acetilcolina, neurotransmissor que apresenta propriedade anti-inflamatória. Portanto, as colinesterases podem ser marcadores inflamatórios na infecção por T. evansi em coelhos.

The aim of this study is to evaluate the role of cholinesterases as an inflammatory marker in acute and chronic infection by Trypanosoma evansi in rabbits experimentally infected. Twelve adult female New Zealand rabbits were used and divided into two groups with 6 animals each: control group (rabbits 1-6) and infected group (rabbits 7-12). Infected group received intraperitoneally 0.5 mL of blood from a rat containing 108 parasites per animal. Blood samples used for cholinesterases evaluation were collected on days 0, 2, 7, 12, 27, 42, 57, 87, 102 and 118 days post-inoculation (PI). Increased activity (P<0.05) of butyrylcholinesterase (BChE) and acetylcholinesterase (AChE) were observed in the blood on days 7 and 27, respectively and no differences were observed in cholinesterase activity in other periods. No significant difference in AChE activity (P>0.05) was observed in the encephalic structures. The increased activities of AChE and BChE probably have a pro-inflammatory purpose, attempting to reduce the concentration of acetylcholine, a neurotransmitter which has an anti-inflammatory property. Therefore, cholinesterase may be inflammatory markers in infection with T. evansi in rabbits.

Resumo Dennstaedtiaceae Pic. Serm.sensu lato é formada por cerca de 20 gêneros e 175 espécies. A família é caracterizada pelo caule ereto, raramente arborescente, curto a longo-reptante, com tricomas e/ou escamas, folhas geralmente pinadas, raro simples, soros indusiados e marginais, submarginais ou raramente abaxiais, esporângios curto a longo-pedicelados, ânulo interrompido pelo pedicelo, esporos sem clorofila. Foram encontrados no estado de Minas Gerais oito gêneros e 24 espécies de Dennstaedtiaceae: Blotiella lindeniana (Hook.) R.M. Tryon, Dennstaedtia cicutaria (Sw.) T. Moore, D. cornuta (Kaulf.) Mett., D. dissecta (Sw.) T. Moore, D. globulifera (Poir.) Hieron., Histiopteris incisa (Thunb.) J. Sm., Hypolepis aquilinaris (Fée) Christ, H. repens (L.) C. Presl, H. stolonifera Fée, H. mitis Kunze, Lindsaea arcuata Kunze, L. bifida (Kaulf.) Mett. ex Kuhn, L. botrychioides St.-Hil., L. divaricata Klotzsch, L. guianensis ssp. lanceastrum K.U. Kramer, L. lancea (L.) Bedd. var. lancea, L. ovoidea Fée, L. quadrangularis Raddi ssp. quadrangularis, L. stricta (Aubl.) Dryand. var. stricta, L. virescens Sw. var. virescens, Paesia glandulosa (Sw.) Kuhn, Pteridium arachnoideum (Kaulf.) Maxon, Saccoloma elegans Kaulf. e S. inaequale (Kunze) Mett. São apresentadas descrições, chaves de identificação, ilustrações, comentários e distribuição geográfica dos táxons.

Abstract Dennstaedtiaceae Pic. Serm. sensu lato is a family contains about 20 genera and 175 species. The family is characterized by stem erect, short or very long-creeping, bearing trichomes or scales, or both, leaves pinnate or rarely simple, indusiate and marginal, submarginal or rarely abaxial sori, sporangia short to usually long-stalked, annulus interrupted by the stalk, spores lacking chlorophyll. Eight genera and twenty four species were found: Blotiella lindeniana (Hook.) R.M. Tryon, Dennstaedtia cicutaria (Sw.) T. Moore, D. cornuta (Kaulf.) Mett., D. dissecta (Sw.) T. Moore, D. globulifera (Poir.) Hieron., Histiopteris incisa (Thunb.) J. Sm., Hypolepis aquilinaris (Fée) Christ, H. repens (L.) C. Presl, H. stolonifera Fée, H. mitis Kunze, Lindsaea arcuata Kunze, L. bifida (Kaulf.) Mett. ex Kuhn, L. botrychioides St.-Hil., L. divaricata Klotzsch, L. guianensis ssp. lanceastrum K.U. Kramer, L. lancea (L.) Bedd. var. lancea, L. ovoidea Fée, L. quadrangularis Raddi ssp. quadrangularis, L. stricta (Aubl.) Dryand. var. stricta, L. virescens Sw. var. virescens, Paesia glandulosa (Sw.) Kuhn, Pteridium arachnoideum (Kaulf.) Maxon, Saccoloma elegans Kaulf. e S. inaequale (Kunze) Mett. Descriptions, identification keys, illustrations, geographical distribution, and comments of taxa are provided.

Extrato aquoso de C-ficocianina de Spirulina platensis, com e sem resíduos celulares, foi purificado em sistema aquoso bifásico (SAB) polietilenoglicol (PEG)/fosfato de potássio variando-se a massa molar do PEG, a pH 6, mais promissor do que a pH 7. Para os ensaios realizados com cada massa molar, com diferentes percentuais de PEG e sal, as concentrações (mg mL-1), as purezas (OD 620/OD 280) e os coeficientes de partição da C-ficocianina de cada sistema foram determinados e comparados. O processo para a purificação primária de C-ficocianina intracelular com resíduos celulares (integrado), composto por 15% de PEG 1500 e 13% de fosfato de potássio de 5% de PEG 4000 e 18% de sal, alcançaram concentrações de C-ficocianina de, respectivamente, 1,60 e 2,67 mg mL-1 na fase de topo. As purezas foram de 0,73 e 0,79, respectivamente, valores superiores aos obtidos nos sistemas sem resíduos celulares.

Crude C-phycocyanin extracts from Spirulina platensis, with and without cell debris, were purified in aqueous two-phase systems ( ATPS) varying the molar mass of the PEG, at pH 6, more promising than at pH 7 . For the assays carried out with each molar mass, with distinct percentages of PEG and salt, the concentrations (mg mL-1), purities (OD 620/OD 280) and C-phycocyanin partition coefficients of each system were determined and compared. The process for the primary purification of intracellular C-phycocyanin with cell debris (integrated), composed of 15% of PEG 1500 and 13% of potassium phosphate and 5% of PEG 4000 and 18% of salt, produced C-phycocyanin concentrations of, respectively, 1.60 and 2.67 mg mL-1 in the top phase. The purities were of 0.73 and 0.79 respectively, values higher than those obtained in the systems without cells.

How to handle Western blot (WB) seroindeterminate individuals for Human T-lymphotropic Virus 1/2 (HTLV-1/2) constitutes a challenge for blood banks and fam ilies. We made a cross-sectional study of 191 enzyme linked immunoassay (EIA) reactive individuals from the hematological center (HEMOCE) of Fortaleza (Brazil), examining their serological (WB) and molecular (PCR) diagnosis, and demographic profiles, as well as a possible association of their condition with other infectious pathologies and risk factors. Ethical institutional approval and personal consent were obtained. Out of 191 EIA reactive individuals, 118 were WB seroindeterminate and 73 were seropositive for HTLV-1/2. In the PCR analysis of 41 WB seroindeterminate individuals, 9 (22%) were positive and 32 (78%) were negative for HTLV-1/2. The demographic analysis indicated a trend towards a predominance of males among the seroindeterminate individuals and females in the seropositive ones. The seroindeterminate individuals were younger than the seropositive ones. We did not find any association of these conditions with syphilis, Chagas disease or HIV or hepatitis, and with risk factors such as breast-feeding, blood transfusion, STD (syphilis) and IDU.

A encefalopatia posterior reversível é uma síndrome aguda / subaguda geralmente causada pela encefalopatia hipertensiva, eclâmpsia, neurotoxicidade a ciclosporina-A, encefalopatia urêmica e púrpura trombocitopênica trombótica.. A maioria dos pacientes apresenta elevação acentuada dos níveis tensionais outros, níveis moderados ou normais. Os sintomas são progressivos e compreendem cefaléia, diminuição do nível de consciência, crises epilépticas e distúrbios visuais. A sintomatologia regride completamente se corrigidas em tempo as causas determinantes, caso contrário, podem instalar-se danos irreversíveis como a cegueira cortical e morte. A tomografia computadorizada (TC) e, sobretudo, a ressonância magnética (RM) contribuem para o diagnóstico. Tais métodos evidenciam edema da substância branca e cinzenta, principalmente das regiões parieto-occipitais. Os achados podem apresentar dificuldade no diagnóstico, hoje superado em parte, com a técnica de difusão pela RM, capaz de diferenciar edema citotóxico de vasogênico. Apresentamos um caso de encefalopatia posterior reversível decorrente de encefalopatia hipertensiva estudada com TC e RM.

The posterior reversible leukoencephalopathy syndrome (PRES) is a recently proposed cliniconeuroradiologic entity.The most common causes of PRES are hypertensive encephalopathy, eclampsia, cyclosporin A neurotoxicity and the uremic encephalopathies.Most patients are markedly hypertensive at presentation, although some have only middly elevated or even normal blood pressure. Symptoms may include headache, nausea , vomiting, altered mental status, seizures,stupor, and visual disturbances. On CT and MR studies, edema has been reported in a relatively symmetrical pattern, typically in the subcortical white matter and occasionally in the cortex of the occipital and parietal lobes. These often striking imaging findings usually are resolved on follow-up studies obtained after appropiate therarapy. Diffusion-weighted images would not show hyperintense signal because of the presence of interstitial rather than cytotoxic edema. We report a case of PRES due to hipertensive encephalopathy studied by CT and MRI.