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Disentangling spatial,environmental and historical effects on tropical forest tree species turnover

Journal of Plant Ecology 2021年第4期14卷 717-729页

作者： Alisson Borges Miranda Santos Vinicius Andrade Maia Cleber Rodrigo de Souza Nathalle Cristine Alencar Fagundes Fernanda Moreira Gianasi Aurelio de Jesus Rodrigues Pais natalia de aguiar-campos Gabriela Gomes Pires Diego Teixeira Girardelli Jean Daniel Morel Mariana Caroline Moreira Morelli Felipe de Carvalho Araujo Rubens Manoel dos Santos department of Forestry Sciences Federal University of LavrasUniversity CampusLavrasBrazil Biological Sciences University of the State of Minas GeraisItuiutaba UnitItuiutabaBrazil department of Biology Federal University of LavrasUniversity CampusLavrasBrazil Faculty of Environmental Engineering and Natural Resources Zambeze UniversityChimoioMozambique

Aims We aimed at disentangling the effects of spatial distance,current and past environmental dissimilarity,and their combinations on tree community taxonomic and phylogenetic turnover by addressing the following questions:(i)Is tree community taxonomic and phylogenetic turnover related to the indirect effects of spatial distance via environmental dissimilarity?(ii)Does tree community taxonomic and phylogenetic turnover respond to paleoclimate(Last Glacial Maximum and Mid-Holocene)?Methods The study was carried out in 14 Atlantic rainforest sites in Brazil(20.4 ha sampled)containing 615 tree species from 83 plant *** obtained plot-level geographic coordinates and soil variables and site-level bioclimatic variables in the current,Mid-Holocene and Last Glacial *** used structural equation models with a distance-based approach to(i)test the direct effects of spatial distance and environmental dissimilarity and(ii)test the indirect effects of spatial distance via environmental dissimilarity on taxonomic(Bray–Curtis distance)and phylogenetic turnover(Comdist and Comdistnt distances).Important Findings Our results suggest a weak indirect effect of spatial distance via environmental dissimilarity on taxonomic and phylogenetic *** community turnover was driven by the direct effects of neutral,niche-based and historical ***,we inferred that the paleoclimate(historical processes)promoted the selection of the clades that gave rise to the current flora,while spatial distances(neutral processes)limited the dispersal range of species from the regional pool and environmental conditions(niche-based processes)locally selected the taxa that are able to persist.

关键词： assembly processes phylogenetic communities environmental filtering neutral communities phylogenetic turnover ecological niche paleoclimate effects

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Old climatically-buffered infertile landscapes(OCBILs):more than harsh habitats,Atlantic Forest inselbergs can be drivers of evolutionary diversity

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Journal of Mountain Science 2022年第9期19卷 2528-2543页

作者： Felipe de CARVALHO ARAÚJO Natália de aguiar-campos Cleber Rodrigo de SOUZA Eduardo de Paiva PAULA Rubens Manoel dos SANTOS Laboratory of Phytogeography and Evolutionary Ecology Department of Forest SciencesFederal University of LavrasLavrasMinas GeraisBrazil

Granite-gneiss rock outcrop inselbergs are ancient stable ecosystems with old,climaticallybuffered infertile landscapes(OCBILs).Although inselbergs provide key ecosystem services,little is done for their conservation and,so far,a lot of their unknown evolutionary history has already been lost by human *** a fine-scale approach,here we tested if habitat and environmental filtering(the inselberg’s harshness)affect the evolutionary diversity of an Atlantic Forest inselberg in *** recorded all trees with a diameter at breast height≥5cm in 20 plots in four habitat types(total sampled area of 0.8 hectares),from highest to lowest:island,hillside,foothill,and semideciduous forest(matrix).We also collected soil samples for chemical,textural and physical soil *** fitted linear models to test the effects of soil and habitat on plotlevel metrics of phylogenetic diversity and structure,lineage diversity,phylogeneticβ-diversity,and evolutionary *** found that the upper inselberg habitats contain a distinct set of ancient,closely related,harsh-tolerant lineages,as well as a subset of lineages that persist under harsh conditions with a certain degree of water *** inferior inselberg habitats harbor higher lineage diversity than expected by *** strongly predicted evolutionary *** concluded that soil depth,slope,nutrients and texture(environmental filtering)and habitat types and topography(habitat filtering)shape the evolutionary history contained in fine-scale inselberg habitats,which should encourage the conservation of these ancient ecosystems.

关键词： Phylogenetic diversity Atlantic Forest Niche conservatism Environmental filters Soil fertility Terrestrial Island

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Hydrological variability and long-term floristic-structural modifications in different habitats of a tropical semi-deciduous forest

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Journal of Forestry Research 2022年第3期33卷 801-811页

作者： Alisson Borges Miranda Santos Vinicius Andrade Maia Cléber Rodrigo de Souza Natália de aguiar-campos Aurélio de Jesus Rodrigues Pais Wilder Bento da Silva Nathalle Cristine Alencar Fagundes Jean Daniel Morel Rubens Manoel dos Santos department of Forestry Sciences Federal University of LavrasCampus UniversitárioC.P.3037LavrasBrazil Faculty of Environmental Engineering and Natural Resources Zambeze UniversityChimoioC.P.2400Mozambique Biological Sciences Universidade do Estado de Minas GeraisUnidade ItuiutabaAv.Antônio Carlos 6627Ituiutaba31270-901Brazil department of Biology Federal University of LavrasUniversity campusC.P.3037Lavras37200-000Brazil

Shifts in hydrological regimes alter river flow rates and flood pulses, decrease environmental heterogeneity and the floristic-structural complexity of associated plant communities. We tested the hypothesis that drought events affect plant community composition and structure at a small-scale within a riparian fragment towards a reduction in floristic-structural complexity. The tree community was sampled in three habitats (wet, transitional and dry) and monitored in seven inventories carried out between 1991 and 2018. Hydrological variations were evaluated through annual rainfalls, river flow rates and water level data. The species richness and the detrended correspondence analysis axes were used to characterise the temporal modifications in floristic composition. Community structure was described in terms of biomass: accumulated, growth of survivors, mortality and recruitment. Generalised linear mixed models were fitted to evaluate the effects of time and environment in community. It was concluded that the climate has become drier in recent years due to declining precipitation that has affected flow rates and water levels. The floristic-structural complexity of the study fragment was maintained during the monitoring period. However, prolonged and extreme drought events displayed the potential to impact floristic-structural patterns.

关键词： Forest dynamics Climate changes Semi-deciduous seasonal forest Temporal change Functioning communities

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Past,present and future of the Resonant-Mass gravitational wave detectors

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Research in Astronomy and Astrophysics 2011年第1期11卷 1-42页

作者： Odylio denys aguiar Instituto Nacional de Pesquisas Espaciais Divisao de Astrofísica Av. dos Astronautas 1758 So José dos Campos 12227-010 SP Brazil

Resonant-mass gravitational wave detectors are reviewed from the concept of gravitational waves and its mathematical derivation, using Einstein＇s general relativity, to the present status of bars and spherical detectors, and their prospects for the future, which include dual detectors and spheres with non-resonant transducers. The review not only covers technical aspects of detectors and sciences that will be done, but also analyzes the subject in a historical perspective, covering the various detection efforts over four decades, starting from Weber＇s pioneering work.

关键词： gravitation -- gravitational waves -- instrumentation: detectors

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Liver Transplantation in a Patient with Situs inversus Associated with Biliary Atresia, Polysplenia and Absence of Inferior Vena Cava: A Case Report

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Surgical Science 2016年第2期7卷 89-95页

作者： Henrique de aguiar Wiederkehr Caroline Aragão de Carvalho Matheus Ruggeri Lucca Cajazeira campos Barbara de aguiar Wiederkehr Julio Cesar Wiederkehr School of Medicine Faculdade Evangélica do Paraná (FEPAR) Curitiba Brazil department of Surgery Federal University (UFPR) Curitiba Brazil

Biliary atresia (BA) is the result of a process of unknown etiology which can occur as an isolated lesion or in association with several congenital abnormalities and remains the main indications of liver transplantation among infants. One of the malformations associated with biliary atresia is Situs inversus totalis, which is a rare congenital abnormality found in 10% - 20% of infants with biliary atresia and presents an incidence varying from 1:5000 to 1:20,000. This case report aims to present an extremely rare case of a patient with Situs inversus associated with biliary atresia, polysplenia and abscence of inferior vena cava that underwent liver transplantation. Case Report: A 10-month-old boy was referred to our hospital with the diagnosis of cirrhosis, due to biliary atresia. Abdominal ultrasound and Doppler scan showed the liver in the left upper quadrant as well as signs of chronic liver disease. In addition, we could notice that the spleen had several lobes, suggesting polysplenia, and was positioned in the right upper quadrant. The patient underwent living donor liver transplant. His mother was the donor and the graft, segment III, was positioned in the left upper quadrant associated with a Y en Roux reconstruction of the biliary tract. During the first post-operatory day, the patient presented signs of disseminated sepsis. Laboratory and imaging diagnostic tests were performed presenting a small intestinal malrotation associated with diffuse ischemia. The patient died at the third day of PO due to complications related to this condition. Conclusion: Any patient with Situs inversus with acute abdomen should be aggressively investigated for other structural and biochemical abnormalities. If liver transplant is indicated, the procedure can be successfully performed.

关键词： Liver Transplantation Situs inversus Polysplenia Biliary Atresia

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Transmission of cryptococcosis by liver transplantation:A case report and review of literature

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World Journal of Hepatology 2020年第5期12卷 253-261页

作者： Gustavo de Sousa Arantes Ferreira Andre Luis Conde Watanabe natalia de Carvalho Trevizoli Fernando Marcus Felippe Jorge Carolina de Fatima Couto Priscila Brizolla de campos Gabriel Oliveira Nunes Caja department of Liver Transplantation Instituto de Cardiologia do Distrito FederalBrasilia 70673900Brazil

BACKGROUND Cryptococcosis is a fungal infection caused by the yeast-like encapsulated basidiomycetous fungus of the Cryptococcus neoformans(***)species *** fungi are ubiquitous in soil and bird droppings,and infection by them is an important global health concern,particularly in immunosuppressed patients,such as organ transplant recipients and those infected by the human immunodeficiency *** fungus usually enters the body through the respiratory tract,but extremely rare cases of infection acquired by transplantation of solid organs have been *** SUMMARY We report a case of disseminated cryptococcosis in a liver transplant recipient,diagnosed 2 wk after the *** patient initially presented with fever,hyponatremia and elevated transaminase levels,manifesting intense headache after a few *** cultures were positive for *** biopsy showed numerous fungal elements surrounded by gelatinous matrix and sparse granulomatous *** resonance imaging of the brain showed multiple small lesions with low signal in T2,peripheric enhancement and edematous halo,diffuse through the parenchyma but more concentrated in the subcortical *** with amphotericin B for 3 wk,followed by maintenance therapy with fluconazole,led to complete resolution of the *** recipients of both kidneys from the same donor also developed disseminated cryptococcosis,confirming the transplant as the source of *** organ donor lived in a rural area,surrounded by tropical rainforest,and had negative blood cultures prior to organ *** This case highlights the risk of transmission of fungal diseases,specifically of ***,through liver graft during liver transplantation.

关键词： Cryptococcosis Liver transplantation Cryptococcus neoformans Case report Immunosuppression Fungal infection

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Behavioral study with Erythrina velutina fractions

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Asian Pacific Journal of Tropical Medicine 2009年第5期2卷 30-33页

作者： Silvania Maria Mendes Vasconcelos natalia Martins Lima Lucas Siqueira de Lucena Alexandre Cesar Praxedes Rodrigues Edilberto Rocha Silveira Carlos Clayton Torres aguiar Paula Matias Soares Francisca Clea Florenco de Sousa Glauce Socorro de Barros Viana department of Physiology and Pharmacology Federal University of CearaRua Cel.Nunes de Melo 112760431-270FortalezaCearaBrazil department of Organic Chemistry Federal University of CearaAv.Mister Hull60455-760FortalezaCearaBrazil

Objective:To study the behavioral effects of semi purified fraction prepared from the stem bark of Erythrina velutina on ***:Three chloroformic fractions(CA) at 50 or 100 mg/kg(CA1,CA2 and CA3) were tested in two behavioral tests;plus maze and open ***:In the plus maze test,it was observed a decrease in the number of entries in the closed arms(NECA) CA2 at both doses as compared to the control *** the open field test,CA2 and CA3 fractions decreased the number of squares crossed and the time of permanence on the bar,increased the number of falls at both doses in the rota rod *** CA2 fraction decreased the NECA,but this data did not characterize an anxiolytic *** was the consequence from decrease of locomotor activity(LA) observed in the open field test,that the decrease of LA and rearing,the number of falls and the decrease in time of permanence on the bar in rota rod test were observed after treatment with CA2 and CA3 at both doses,suggesting sedative ***:The present work demonstrated that CA2 and CA3 fractions have impairing effect on LA and motor coordination.

关键词： Erythrina relutina Fraction Locomotor activity Motor coordination

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Leukocytoclastic vasculitis caused by hepatitis C virus in a liver transplant recipient: A case report

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World Journal of Hepatology 2019年第4期11卷 402-408页

作者： Gustavo de Sousa Arantes Ferreira Andre Luis Conde Watanabe natalia de Carvalho Trevizoli Fernando Marcus Felippe Jorge Luiz Gustavo Guedes Diaz Milla Carolina Costa Lafeta Araujo Gabriela de campos Araujo Amanda de Castro Machado department of Liver Transplantation Instituto de Cardiologia do Distrito Federal Curso de Medicina Universidade Catolica de Brasilia

BACKGROUND Infection by the hepatitis C virus(HCV) is currently considered to be a global health issue, with a high worldwide prevalence and causing chronic disease in afflicted individuals. The disease largely involves the liver but it can affect other organs, including the skin. While leukocytoclastic vasculitis has been reported as one of the dermatologic manifestations of HCV infection, there are no reports of this condition as the first symptom of HCV recurrence after liver *** SUMMARY We report here a case of leukocytoclastic vasculitis in a liver transplant recipient on maintenance immunosuppression. The condition presented as a palpable purpura in both lower extremities. Blood and urine cultures were negative and all biochemical tests were normal, excepting evidence of anemia and hypocomplementemia. Imaging examination by computed tomography showed a small volume of ascites, diffuse thickening of bowel walls, and a small bilateral pleural effusion. Skin biopsy showed leukocytoclasia and fibrinoid *** biopsy was suggestive of HCV recurrence in the graft, and HCV polymerase chain reaction yielded 11460 copies/mL and identified the genotype as 1 A. Treatment of the virus with a 12-wk direct-acting antiviral regimen of ribavirin, sofosbuvir and daclatasvir led to regression of the symptoms within the first 10 d and subsequent complete resolution of the *** This case highlights the difficulties of diagnosing skin lesions caused by HCVinfection in immunosuppressed patients.

关键词： Hepatitis C Liver transplantation Leukocytoclastic vasculitis Immunosuppression Direct-acting antivirals Case report

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Continuous positive airway pressure acutely increases exercise duration in children with severe therapy-resistant asthma:a randomized crossover trial

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World Journal of Pediatrics 2021年第2期17卷 189-196页

作者： Claudia Silva Schindel Daniele Schiwe Joao Paulo Heinzmann-Filho natalia Evangelista campos Paulo Marcio Pitrez Marcio Vinicius Fagundes Donadio Laboratory of Pediatric Physical Activity Centro Infant.Pontiffcia Universidade Catolica do Rio Grande do Sul(PUCRS)Av.Ipiranga6690.2°andarPorto AlegreRS CEP 90610-000.Brazil Hospital Moinhos de Vento Porto AlegreBrazil and Centro InfantPontiffcia Universidade Catolica do Rio Grande do Sul(PUCRS)Porto Alegre.Brazil

Background Lower exercise tolerance is an important component of asthma and the possible effects of non-invasive ven-tilation on exercise capacity in individuals with severe therapy-resistant asthma(STRA)are *** study aimed to evaluate the immediate effect of continuous positive airway pressure(CPAP)on exercise tolerance in children with *** We performed a controlled,randomized,crossover clinical trial including subjects aged 6 to 18 years old diagnosed with ***,anthropometric and lung function data were *** participants in the intervention group(IG)used CPAP(PEEP 10cmH2O and FiO20.21)for a period of 40 *** in the control group(CG)used CPAP with mini-mum PEEP at 1 cmH20 also for 40 ***,subjects from both groups underwent cardiopulmonary exercise testing(CPET).After a 15-day washout period,on a subsequent visit,subjects participated in the opposite group to the initial *** Thirteen subjects with a mean age of 12.30±1.7 years were *** variables of peak expiratory flow(PEF)and forced expiratory volume in the first second(FEV1)before using CPAP and after performing CPET did not show sig-nificant *** CPET results,there was no significant difference(P=0.59)between groups at peak exercise for oxygen consumption—VO2(CG:33.4±6.3 and IG:34.5±5.9,mL kg^(-1)min^(-1)).However,the IG(12.4±2.1)presented a total test time(min)significantly(P=0.01)longer than the CG(11.5±1.3).Conclusion The results suggest that the use of CPAP before physical exercise increases exercise duration in children and adolescents with STRA.

关键词： Asthma Non-invasive ventilation Oxygen consumption Exercise test Exercise tolerance Exercise-induced bronchospasm

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Terpenes extracted from marine sponges with antioxidant activity:a systematic review

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Natural Products and Bioprospecting 2023年第1期13卷 516-527页

作者： Cintia Cristina Santi Martignago Beatriz Soares-Silva Julia Risso Parisi Lais Caroline Souza e Silva Renata Neves Granito Alessandra Mussi Ribeiro Ana Cláudia Muniz Renno Lorena Ramos Freitas de Sousa Anna Caroline campos aguiar departamento de Biociências Universidade Federal de São Paulo(UNIFESP)Rua Silva Jardim 136Edifício CentralSantosSP 11015-020Brazil Institute of Chemistry Federal University of Catalão(UFCAT)Av.Dr.Lamartine Pinto de Avelar1120 Vila ChaudCatalãoGO 75704-020Brazil

Marine biodiversity has emerged as a very promising resource of bioactive compounds and secondary metabolites from different sea *** sponge’s secondary metabolites demonstrated various bioactivities and potential pharmacological *** systematic review of the literature focuses on the advances achieved in the antioxidant potential of marine sponges in *** review was performed in accordance with PRISMA *** main inclusion criterion for analysis was articles with identification of compounds from terpene classes that demonstrate antioxidant activity in *** in three different databases,two hundred articles were *** screening abstracts,titles and evaluating for eligibility of manuscripts 14 articles were *** most performed analyzes to detect antioxidant activity were scavenging activity 2,2-diphenyl-1-picrylhydrazyl(DPPH)and measurement of intracellular reactive oxygen species(ROS).It was possible to identify 17 compounds of the terpene class with pronounced antioxidant activity in *** evidence of the studies included in this review was accessed by the GRAde *** play an important ecological role,moreover these molecules have a pharmaceutical and industrial application.

关键词： Antioxidant Marine drugs Sponge Free radical

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