Atividade antioxidante dos extratos etanólicos e dos óleos essenciais de Xylopia aromática e Piper nigrum / Antioxidant activity of ethanolic extracts and essential oils from Xylopia aromatica and Piper nigrum

Xylopia aromatica é conhecida como pimenta-de-macaco, pertence à família Annonaceae, e já no século XIX, o naturalista Saint-Hilaire a considerava com potencial de uso alimentício, pois seu sabor era similar à pimenta-do-reino. A pimenta-do-reino é um condimento, que também é utilizado para conservação de carnes e extração de óleo essencial. Assim, objetivou-se com essa pesquisa comparar o teor, atividade antioxidante e composição química dos óleos essenciais de frutos de pimenta-de-macaco e pimenta-do-reino (branca e preta). A pimenta-de-macaco (PM) foi coletada em áreas do Cerrado, e as pimentas do reino branca (PB) e preta (PP) adquiridas no comércio local. Os frutos foram triturados e a extração do óleo essencial realizada pelo método de hidrodestilação utilizando aparelho de Clevenger. O teor de óleo foi determinado com base na massa de óleo extraída (g) por 100 g de frutos. A atividade antioxidante foi avaliada por meio do sequestro do radical livre 2,2-difenil-1-picrilhidrazila (DPPH), e os resultados expressos em porcentagem de capacidade de redução de DPPH. O delineamento estatístico utilizado foi o inteiramente casualizado, sendo três tratamentos (PM, e PB e PP), com seis repetições. As análises cromatográficas foram realizadas em cromatógrafo a gás, Agilent Technologies (GC 7890A), acoplado ao detector espectrômetro de massas (MS 5975C) dotado de coluna capilar HP-5 MS. As análises estatísticas foram realizadas no programa estatístico R. A PM apresentou rendimento de óleo essencial de 0,35 %, enquanto que as PP e PB apresentaram rendimento de 0,98 %, e 1,08 %, respectivamente. A capacidade de redução de DPPH foi de 21,13% para PM, e 12,68% e 5,48% para as PP e PB, respectivamente. Na análise química dos óleos essenciais, considerando compostos que representavam mais de 1% de abundância no óleo da PM, foram detectados 82 compostos, enquanto que nas PP e PB foram detectados 57 e 47 respectivamente. O composto mais abundante na PM (29,5%) e PB (39,7%) foi o Limoneno, já na PP (11,2%) este foi segundo composto com maior abundância, sendo o Cariofileno (46,2%) o principal para a PP. Diante dos resultados a pimenta-de-macaco apresenta rendimento de óleo menor que as pimentas do reino branca e preta, no entanto, sua capacidade de redução de DPPH é maior que as demais pimentas avaliadas, tendo também maior número de compostos detectados

Vigilância epidemiológica do vírus do Nilo Ocidental no mundo e no Brasil: relevância da vigilância equina no contexto de saúde única

O vírus do Nilo Ocidental (WNV) é um flavivírus neuropatogênico transmitido por mosquito, mantido na natureza emum ciclo de transmissão zoonótica entre as aves e os mosquitos ornitofílicos, principalmente do gênero Culex. Até a décadade 1990, o WNV era considerado um arbovírus do mundo antigo, mas em 1999 surgiu nos Estados Unidos da Américae se espalhou rapidamente, tornando-se uma grande ameaça à saúde pública. O WNV se adaptou ao ciclo envolvendomosquitos e pássaros americanos e chegou à América Central e do Sul nos anos subsequentes. Em 2003, o Sistema Nacionalde Vigilância da Febre do Nilo Ocidental no Brasil foi criado com base na triagem sorológica de animais sentinelas evetores, conforme recomendado pela Organização Pan-Americana da Saúde (OPAS) e pela Organização Mundial daSaúde (OMS). Desde 2008, evidências sorológicas de infecção por WNV em equinos brasileiros têm sido relatadas e acirculação do WNV monitorada por meio de triagem sorológica de cavalos sentinelas, além da notificação de casos deencefalomielite. Os equinos são altamente suscetíveis ao WNV e surtos de doenças neurológicas geralmente precedemcasos humanos. Nesse sentido, a vigilância equina tem sido essencial para fornecer um alerta precoce às autoridades desaúde pública e animal em vários países, incluindo o Brasil. Isso demonstra a necessidade de programas de intervençãoem saúde pública e animal para alocar recursos e conscientizar os médicos veterinários sobre seu papel em processos devigilância humana que envolvam equinos. Nesta revisão, é discutida a importância da vigilância equina e dos médicosveterinários como linha de frente na vigilância humana no Brasil e no mundo, no contexto de saúde única.West Nile virus (WNV) is a neurovirulent mosquito-borne Flavivirus that is maintained in nature by a zoonotic transmissioncycle between avian hosts and ornithophilic mosquito vectors, mostly from the Culex genus. Until the 1990s, WNV wasconsidered to be an old-world arbovirus, but in 1999, WNV emerged in the United States (US) and spread rapidly, becoming amajor threat to public health. WNV adapted to the transmission cycle involving American mosquitoes and birds and reachedCentral and South America in subsequent years. In 2003, the National West Nile Fever Surveillance System was created in Brazilbased on serological screening of animals and sentinel vectors, as recommended by the Pan American Health Organization(PAHO) and the World Health Organization (WHO). Since 2008, serological evidence of WNV infection in Brazilian horseshas been reported, and the circulation of WNV has been monitored through the regular serological screening of sentinel horsesand reporting of encephalomyelitis cases. Horses are highly susceptible to WNV infection, and outbreaks of neurologicaldisease among horses often precede human cases. In this regard, equine surveillance has been essential in providing earlywarning to public and animal health authorities in several countries, including Brazil. This demonstrates the need for animaland public health intervention programs to allocate resources to make veterinarians aware of the role they can play in thehuman surveillance processes by monitoring horses. This review discusses the importance of equine surveillance and the gapthat veterinarians can fill on the front line in human surveillance, in Brazil and worldwide, in the context of “One Health

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Post-intervention Status in Patients With Refractory Myasthenia Gravis Treated With Eculizumab During REGAIN and Its Open-Label Extension

OBJECTIVE: To evaluate whether eculizumab helps patients with anti-acetylcholine receptor-positive (AChR+) refractory generalized myasthenia gravis (gMG) achieve the Myasthenia Gravis Foundation of America (MGFA) post-intervention status of minimal manifestations (MM), we assessed patients' status throughout REGAIN (Safety and Efficacy of Eculizumab in AChR+ Refractory Generalized Myasthenia Gravis) and its open-label extension. METHODS: Patients who completed the REGAIN randomized controlled trial and continued into the open-label extension were included in this tertiary endpoint analysis. Patients were assessed for the MGFA post-intervention status of improved, unchanged, worse, MM, and pharmacologic remission at defined time points during REGAIN and through week 130 of the open-label study. RESULTS: A total of 117 patients completed REGAIN and continued into the open-label study (eculizumab/eculizumab: 56; placebo/eculizumab: 61). At week 26 of REGAIN, more eculizumab-treated patients than placebo-treated patients achieved a status of improved (60.7% vs 41.7%) or MM (25.0% vs 13.3%; common OR: 2.3; 95% CI: 1.1-4.5). After 130 weeks of eculizumab treatment, 88.0% of patients achieved improved status and 57.3% of patients achieved MM status. The safety profile of eculizumab was consistent with its known profile and no new safety signals were detected. CONCLUSION: Eculizumab led to rapid and sustained achievement of MM in patients with AChR+ refractory gMG. These findings support the use of eculizumab in this previously difficult-to-treat patient population. CLINICALTRIALSGOV IDENTIFIER: REGAIN, NCT01997229; REGAIN open-label extension, NCT02301624. CLASSIFICATION OF EVIDENCE: This study provides Class II evidence that, after 26 weeks of eculizumab treatment, 25.0% of adults with AChR+ refractory gMG achieved MM, compared with 13.3% who received placebo

Minimal Symptom Expression' in Patients With Acetylcholine Receptor Antibody-Positive Refractory Generalized Myasthenia Gravis Treated With Eculizumab

The efficacy and tolerability of eculizumab were assessed in REGAIN, a 26-week, phase 3, randomized, double-blind, placebo-controlled study in anti-acetylcholine receptor antibody-positive (AChR+) refractory generalized myasthenia gravis (gMG), and its open-label extension

Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript −1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good