Palomar 5 and its Tidal Tails::A Search for New Members in the Tidal Stream

In this paper we present the results of a search for members of the globular cluster Palomar 5 and its associated tidal tails. The analysis has been performed using intermediate and low resolution spectroscopy with the AAOmega spectrograph on the Anglo-Australian Telescope. Based on kinematics, line strength and photometric information, we identify 39 new red giant branch stars along $\sim$20$^{\circ}$ of the tails, a larger angular extent than has been previously studied. We also recover eight previously known tidal tail members. Within the cluster, we find seven new red giant and one blue horizontal branch members and confirm a further twelve known red giant members. In total, we provide velocity data for 67 stars in the cluster and the tidal tails. Using a maximum likelihood technique, we derive a radial velocity for Pal 5 of $-57.4 \pm 0.3$ km s$^{-1}$ and a velocity dispersion of $1.2\pm0.3$ km s$^{-1}$. We confirm and extend the linear velocity gradient along the tails of $1.0 \pm 0.1$ km s$^{-1}$ deg$^{-1}$, with an associated intrinsic velocity dispersion of $2.1\pm0.4$ km s$^{-1}$. Neither the velocity gradient nor the dispersion change in any significant way with angular distance from the cluster, although there is some indication that the gradient may be smaller at greater angular distances in the trailing tail. Our results verify the tails as kinematically cold structures and will allow further constraints to be placed on the orbit of Pal 5, ultimately permitting a greater understanding of the shape and extent of the Galaxy's dark matter halo.Comment: 14 pages, 9 figures, 4 tables; Accepted for publication in MNRA

ESTUDO SOBRE A AÇÃO DO FOGO EM SOLO CARACTERÍSTICO DO CERRADO A PARTIR DE PARCELAS EXPERIMENTAIS EM DIFERENTES CONDIÇÕES DE COBERTURA VEGETAL

Esta pesquisa realizou o estudo comparativo por meio da aplicação controlada de fogo sobre diferentes condições de cobertura vegetal, focando na variação dos índices de escoamento superficial, produção de sedimento e densidade de cobertura vegetal, visando avaliar a influência do fogo frente a erosão. Para isso foram determinadas cinco parcelas diferenciadas pelos tipos de cobertura vegetal, declividade e drenagem, das quais a Parcela B foi a que apresentou menor alteração destes parâmetros

Lack of mutations of exon 2 of the MEN1 gene in endocrine and nonendocrine sporadic tumors

In addition to the mutations that underlie most cases of the multiple endocrine neoplasia type 1 (MEN1) syndrome, somatic mutations of the MEN1 gene have also been described in sporadic tumors like gastrinomas, insulinomas and bronchial carcinoid neoplasm. We examined exon 2 of this gene, where most of the mutations have been described, in 148 endocrine and nonendocrine sporadic tumors. DNA was obtained by phenol/chloroform extraction and ethanol precipitation from 92 formalin-fixed, paraffin-embedded samples, and from 40 fresh tumor tissue samples. We used 5 pairs of primers to encompass the complete coding sequence of exon 2 of the MEN1 gene that was screened by the polymerase chain reaction-single-stranded conformation polymorphism (PCR-SSCP) technique in 78 sporadic thyroid cancers: 28 follicular adenomas, 35 papillary carcinomas, 14 follicular carcinomas, and 1 anaplastic thyroid carcinoma. We also examined 46 adrenal lesions (3 hyperplasias, 3 adenomas and 35 adrenocortical carcinomas, 2 pheochromocytomas, 2 ganglioneuroblastomas, and 1 lymphoma) and 24 breast cancers (6 noninvasive, 16 infiltrating ductal, and 2 invasive lobular tumors). The PCR product of 5 tumors suspected to present band shifts by SSCP was cloned. Direct sense and antisense sequencing did not identify mutations. These results suggest that the MEN1 gene is not important in breast, thyroid or adrenal sporadic tumorigenesis. Because the frequency of mutations varies significantly among tumor subgroups and allelic deletions are frequently observed at 11q13 in thyroid and adrenal cancers, another tumor suppressor gene residing in this region is likely to be involved in the tumorigenesis of these neoplasms.86186

Evaluation of total and non-fatty ether extract in feeds and cattle feces using two analytical methods

AbstractThe objective of this study was to evaluate ether extract (EE) concentrations, pigments, and wax in forages (n=14), concentrates (n=23), and cattle feces (n=100) using extraction methods recommended by Association of Official Analytical Chemists (AOAC; method 920.39) and American Oil Chemist's Society (AOCS; method Am 5-04). The EE contents were compared by adjusting a linear regression model for each sample type. For the feces and forage samples, the EE contents produced by the AOCS method were greater (P<0.05) compared to those obtained using the AOAC method. No differences between methods were observed in EE content of concentrates (P>0.05). Concentration of vegetable pigments and wax were evaluated by using analysis for variance. Vegetable pigments were lower (P<0.05) in the post-extraction residues using the AOCS method, than the AOAC method, indicating greater participation of vegetable pigments in the EE. No differences were observed between the methods in wax concentration of the post-extraction residues (P>0.05). The quantification method of the EE content that is recommended by AOCS is not suggested for analyses of forage and feces of ruminants because it possibly increases the removal of non-fatty material, mostly pigments, in comparison to the method recommended by AOAC

Heterotrophic and photoautotrophic media optimization using response surface methodology for the Novel Microalga Chlorococcum amblystomatis

The nutritional requirements of novel microalgal strains are key for their effective cultivation and metabolite content. Therefore, the optimization of heterotrophic and photoautotrophic culture media is crucial for novel Chlorococcum amblystomatis growth. Heterotrophic and photoautotrophic biomass samples were characterized to identify the differences between their heterotrophic and photoautotrophic biomass composition and their biotechnological potential. Media optimization through surface response methodology led to 44.9 and 51.2% increments in C. amblystomatis-specific growth rates under heterotrophic and photoautotrophic growth, respectively. This microalga registered high protein content (61.49–73.45% dry weight), with the highest value being observed in the optimized photoautotrophic growth medium. The lipid fraction mainly constituted polyunsaturated fatty acids, ranging from 44.47 to 51.41% for total fatty acids (TFA) in cells under heterotrophy. However, these contents became significantly higher (70.46–72.82% TFA) in cultures cultivated under photoautotrophy. An interesting carotenoids content was achieved in the cultures grown in optimized photoautotrophic medium: 5.84 mg·g−1 β-carotene, 5.27 mg·g−1 lutein, 3.66 mg·g−1 neoxanthin, and 0.75 mg·g−1 violaxanthin. Therefore, C. amblystomatis demonstrated an interesting growth performance and nutritional profile for food supplements and feed products that might contribute to meeting the world’s nutritional demand.info:eu-repo/semantics/publishedVersio

Aspergilosis cerebral causada por Aspergillus fumigatus en paciente con SIDA: primer reporte de caso demostrado por cultivo en Brasil

Cerebral aspergillosis is a rare cause of brain expansive lesion in AIDS patients. We report the first culture-proven case of brain abscess due to Aspergillus fumigatus in a Brazilian AIDS patient. The patient, a 26 year-old male with human immunodeficiency virus (HIV) infection and history of pulmonary tuberculosis and cerebral toxoplasmosis, had fever, cough, dyspnea, and two episodes of seizures. The brain computerized tomography (CT) showed a bi-parietal and parasagittal hypodense lesion with peripheral enhancement, and significant mass effect. There was started anti-Toxoplasma treatment. Three weeks later, the patient presented mental confusion, and a new brain CT evidenced increase in the lesion. He underwent brain biopsy, draining 10 mL of purulent material. The direct mycological examination revealed septated and hyaline hyphae. There was started amphotericin B deoxycholate. The culture of the material demonstrated presence of the Aspergillus fumigatus. The following two months, the patient was submitted to three surgeries, with insertion of drainage catheter and administration of amphotericin B intralesional. Three months after hospital admission, his neurological condition suffered discrete changes. However, he died due to intrahospital pneumonia. Brain abscess caused by Aspergillus fumigatus must be considered in the differential diagnosis of the brain expansive lesions in AIDS patients in Brazil.La aspergilosis cerebral es una causa rara de lesión expansiva cerebral en pacientes con SIDA. Presentamos el primer reporte de un absceso cerebral causado por Aspergillus fumigatus en un paciente brasileño con SIDA. El paciente, de 26 años de edad, presentaba antecedentes de infección por el virus de la inmunodeficiencia humana (VIH), tuberculosis pulmonar y toxoplasmosis cerebral. Manifestó fiebre, tos, disnea y dos episódios de convulsiones. La tomografía computadorizada (TC) demostró una lesión hipodensa parasagital y bi-parietal con realce periférico e importante efecto de masa. Se inició tratamiento anti-Toxoplasma. Tres semanas después, el paciente evidenció confusión mental y una nueva TC de cráneo mostró aumento de la lesión. Se realizó biopsia cerebral con drenaje de 10 mL de material purulento. El examen micológico directo reveló hifas hialinas septadas. Se inició anfotericina B deoxicolato. La cultura del material demostró presencia de Aspergillus fumigatus. En los siguientes dos meses el paciente fue sometido a otras tres cirugías, insertándose un catéter de drenaje y administrándose anfotericina B intralesional. Tres meses después de la admisión hospitalaria, la condición neurológica del paciente sufrió discretos cambios. Sin embargo, falleció debido a neumonia intrahospitalaria. Aunque muy raros, los abscesos cerebrales causados por Aspergillus fumigatus deben ser considerados en el diagnóstico diferencial de las lesiones expansivas cerebrales en pacientes con SIDA

Genome And Secretome Analysis Of The Hemibiotrophic Fungal Pathogen, Moniliophthora Roreri, Which Causes Frosty Pod Rot Disease Of Cacao: Mechanisms Of The Biotrophic And Necrotrophic Phases

Background: The basidiomycete Moniliophthora roreri is the causal agent of Frosty pod rot (FPR) disease of cacao (Theobroma cacao), the source of chocolate, and FPR is one of the most destructive diseases of this important perennial crop in the Americas. This hemibiotroph infects only cacao pods and has an extended biotrophic phase lasting up to sixty days, culminating in plant necrosis and sporulation of the fungus without the formation of a basidiocarp.Results: We sequenced and assembled 52.3 Mb into 3,298 contigs that represent the M. roreri genome. Of the 17,920 predicted open reading frames (OFRs), 13,760 were validated by RNA-Seq. Using read count data from RNA sequencing of cacao pods at 30 and 60 days post infection, differential gene expression was estimated for the biotrophic and necrotrophic phases of this plant-pathogen interaction. The sequencing data were used to develop a genome based secretome for the infected pods. Of the 1,535 genes encoding putative secreted proteins, 1,355 were expressed in the biotrophic and necrotrophic phases. Analysis of the data revealed secretome gene expression that correlated with infection and intercellular growth in the biotrophic phase and invasive growth and plant cellular death in the necrotrophic phase.Conclusions: Genome sequencing and RNA-Seq was used to determine and validate the Moniliophthora roreri genome and secretome. High sequence identity between Moniliophthora roreri genes and Moniliophthora perniciosa genes supports the taxonomic relationship with Moniliophthora perniciosa and the relatedness of this fungus to other basidiomycetes. Analysis of RNA-Seq data from infected plant tissues revealed differentially expressed genes in the biotrophic and necrotrophic phases. 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Cardiovascular abnormalities in patients with oral cleft: a clinical-electrocardiographic-echocardiographic study

OBJECTIVES: The present study aims to describe the clinical, electrocardiographic, and echocardiographic cardiological findings in a group of patients with oral clefts. METHODS: This is a prospective cross-sectional study on 70 children (age range from 13 days to 19 years) with oral clefts who attended the multidisciplinary program of a university hospital from March 2013 to September 2014. The patients were evaluated by a pediatric cardiologist and underwent detailed anamnesis, physical examination, electrocardiogram, and echocardiogram. RESULTS: Sixty percent of the patients were male; 55.7% presented with cleft lip and palate, and 40.0% presented with health complaints. Comorbidities were found in 44.3%. Relevant pregnancy, neonatal, family and personal antecedents were present in 55.7%, 27.1%, 67.2%, and 24.3% of the patients, respectively. Regarding the antecedents, 15.2% of the patients presented with a cardiac murmur, 49.0% with a familial risk of developing plurimetabolic syndrome, and 6% with family antecedents of rheumatic fever. Electrocardiographic evaluation showed one case of atrioventricular block. Echocardiograms were abnormal in 35.7% of the exams, including 5 cases of mitral valve prolapse — one of which was diagnosed with rheumatic heart disease. CONCLUSION: The finding of a family risk of developing plurimetabolic syndrome and a diagnosis of rheumatic heart disease indicates that patients with oral clefts may be more prone to developing acquired heart disease. Thus, our findings highlight the importance of anamnesis and methodological triangulation (clinical-electrocardiographic-echocardiographic) in the investigation of patients with oral clefts and emphasize that cardiological follow-up to evaluate acquired and/or rhythm heart diseases is necessary. This strategy permits comorbidity prevention and individualized planned treatment

Prescrição de antimicrobianos para idosos hospitalizados: análise do benefício e associação com implementação de limitação de esforço terapêutico e cuidados paliativos

Background and Objectives: Many advances have occurred in the prevention, diagnosis and treatment of infectious diseases, but they are still the main causes of hospitalization and death in older adults. The objective of this study was to verify the benefit of antimicrobial use and its association with the implementation of other therapeutic measures and with the indication of palliative care in the last two weeks of life of hospitalized older adults, in order to subsidize the development of rational models for this group. Methods: A retrospective study was carried out by analyzing the medical records of the older adult participants of the cohort epidemiological study ―Development of a Care Line for Older Adults at the University Hospital of Santa Maria‖, which presented death as an outcome. Results: Of the 97 individuals evaluated, 89.7% (n = 87) used antibiotics in the last two weeks of life. Among those who used antibacterial agents, 38.9% presented clinical signs of improvement after treatment initiation (n=28). Thus, it was possible to affirm that there was no association between symptom relief and antibacterial use (p = 0.377). Among those who benefited from antibiotic therapy, 46.4% were indicated for respiratory infection and 14.3% for urinary tract infection. We found no dependence between the use of antibacterial drugs and the other therapeutic measures adopted (p = 0.057), nor with the indication of palliative care (p = 0.065). Conclusion: There was little evidence of benefit in the use of antibiotics in the studied group, which indicates the need for a different care plan adequacy for this patient profile.Justificación y Objetivos: Ocurrieron muchos avances en la prevención, diagnóstico y tratamiento de las enfermedades infecciosas, pero todavía son las principales causas de hospitalización y muerte en ancianos. El presente trabajo tuvo como objetivo verificar el beneficio del uso de antimicrobianos y su asociación con la implementación de otras medidas terapéuticas y con la indicación de cuidados paliativos en las dos últimas semanas de vida de ancianos en internación hospitalaria con el fin de fomentar el desarrollo de modelos racionales de prescripción para este grupo. Métodos: Se desarrolló un estudio retrospectivo realizado por el análisis de historiales de los ancianos participantes del estudio epidemiológico del tipo cohorte ―Desarrollo de una línea de cuidados para el anciano en el Hospital Universitario de Santa María‖, que presentaron muerte como desenlace. Resultados: De los 97 individuos evaluados, el 89,7% (n = 87) hicieron uso de antibiótico en las dos últimas semanas de vida. Entre los que utilizaron el antibacteriano, el 38,9% presentó signos clínicos de mejora después del inicio del tratamiento (n = 28). Así fue posible afirmar que no hubo asociación entre el alivio de los síntomas y el uso de antibacteriano (p = 0,377). Entre los que se beneficiaron de la antibioticoterapia, el 46,4% fue indicado para infección respiratoria y el 14,3% para infección del tracto urinario. No se encontró dependencia entre el uso de antibacteriano y las otras medidas terapéuticas adoptadas (p = 0,057), ni con la indicación de cuidado paliativo (p = 0,065). Conclusión: Se observó poca evidencia de beneficio en el uso de antibacteriano en el grupo estudiado, lo que señala la necesidad de una adecuación del plan de cuidado diferenciada para ese perfil de pacientes.Justificativa e Objetivos: Muitos avanços ocorreram em prevenção, diagnóstico e tratamento das doenças infecciosas, porém elas ainda são as principais causas de hospitalização e morte em idosos. O objetivo deste trabalho foi verificar o benefício do uso de antimicrobianos e sua associação com a implementação de outras medidas terapêuticas e com a indicação de cuidados paliativos nas duas últimas semanas de vida de idosos em internação hospitalar, a fim de subsidiar o desenvolvimento de modelos racionais de prescrição para este grupo. Métodos: Foi desenvolvido um estudo retrospectivo realizado pela análise de prontuários dos idosos participantes do estudo epidemiológico do tipo coorte ―Desenvolvimento de uma linha de cuidados para o idoso no Hospital Universitário de Santa Maria‖ que apresentaram óbito como desfecho. Resultados: Dos 97 indivíduos avaliados, 89,7% (n = 87) fizeram uso de antibiótico nas duas últimas semanas de vida. Entre aqueles que utilizaram antibacteriano, 38,9% apresentaram sinais clínicos de melhora após o início do tratamento (n = 28). Assim, foi possível afirmar que não houve associação entre o alívio dos sintomas e o uso de antibacteriano (p = 0,377). Entre aqueles que se beneficiaram da antibioticoterapia, 46,4% foram indicados para infecção respiratória e 14,3% para infecção do trato urinário. Não foi encontrada dependência entre o uso de antibacteriano e as outras medidas terapêuticas adotadas (p = 0,057), nem com a indicação de cuidado paliativo (p = 0,065). Conclusão: Observou-se pouca evidência de benefício no uso de antibacteriano no grupo estudado, o que sinaliza a necessidade de uma adequação de plano de cuidado diferenciada para esse perfil de pacientes