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Arapiraca, Brazil

Pequeno I.D.,Federal University of Vale do Sao Francisco | Almeida N.M.,State University of Alagoas | Filho J.A.S.,Federal University of Vale do Sao Francisco
Rodriguesia | Year: 2016

In Brazil, the genus Pseudobombax is represented by some 120 species occurring in different vegetation types. Bombacoideae species have nocturnal flowers and are bat and hawkmoth visited. The aim of the work was to investigate the reproductive biology of P. marginatum, and to describe the plant-floral visitors relationships. The study was carried out in a Caatinga area in Afrânio municipality, Pernambuco state. Phenology, floral biology, flower-visitor behavior and reproductive system were analyzed. P. marginatum has chiropterophilous flowers, although it is not visited by bats, a fact possibly related to the forest fragmentation process in the study area. The flowering period of the species was from May to July, - floral visitors were hawkmoths, bees, wasps and birds. Nectar production was high with low sugar concentration. Reproductive success was obtained only in cross pollination, due to the incompatibility mechanism. P. marginatum presents a critical situation for regeneration due to the lack of efficient pollination services, caused probably by forest fragmentation in the study area and the lack of chiropterans visitors. Source

Dos Santos A.F.,Centro Universitario Cesmac | Dos Santos A.F.,State University of Alagoas | Fonseca S.A.,Centro Universitario Cesmac | Cesar F.A.,Federal University of Pernambuco | And 3 more authors.
Parasitology Research | Year: 2014

Jatropha elliptica is a shrub distributed throughout the north and west of Brazil and reputedly possesses a wide range of therapeutical properties. The roots of this plant possess molluscicidal activity and contain terpenoids, coumarin, lignoid, steroids and alkaloid. In the present study, we assessed the schistosomicidal, miracicidal and cercaricidal activities (against Schistosoma mansoni) and molluscicidal activities (against adults and egg masses of Biomphalaria glabrata) of the alkaloid diethyl 4-phenyl-2,6-dimethyl-3,5- pyridinedicarboxylate, isolated from the ethanol extract of the rhizome of J. elliptica, have been determined. The alkaloid was 100 % lethal to adult schistosomes within 4 days at a concentration of 50 μg/mL. Alterations were observed in the schistosome tegument occasioned by treatment with the alkaloid, such as formation of vesicles and vacuolisation. The extent of tegumental damage of the worm was proportional to the time of incubation and to the concentration of compound. The alkaloid also exhibited a potent cercaricidal activity (LC100 = 2 μg/mL); it was totally ineffective against miracicidal forms of the parasite. Moreover, the alkaloid presented strong activity against adult snails (LC90 = 36.43 μg/mL) but was inactive against their egg masses. It is observed then the potential of this compound for the development of new therapies for the treatment of schistosomiasis. © 2014 The Author(s). Source

Cavalcanti D.R.,Federal Rural University of Pernambuco | Cavalcanti D.R.,State University of Alagoas | Cavalcanti D.R.,Federal Institute of Education | Albuquerque U.P.,Federal Rural University of Pernambuco
Evidence-based Complementary and Alternative Medicine | Year: 2013

Increases in ethnobotanical studies and knowledge in recent decades have led to a greater and more accurate interpretation of the overall patterns related to the use of medicinal plants, allowing for a clear identification of some ecological and cultural phenomena. "Hidden diversity" of medicinal plants refers in the present study to the existence of several species of medicinal plants known by the same vernacular name in a given region. Although this phenomenon has previously been observed in a localized and sporadic manner, its full dimensions have not yet been established. In the present study, we sought to assess the hidden diversity of medicinal plants in northeastern Brazil based on the ethnospecies catalogued by local studies. The results indicate that there are an average of at least 2.78 different species per cataloged ethnospecies in the region. Phylogenetic proximity and its attendant morphological similarity favor the interchangeable use of these species, resulting in serious ecological and sanitary implications as well as a wide range of options for conservation and bioprospecting. © 2013 Deyvson Rodrigues Cavalcanti and Ulysses Paulino Albuquerque. Source

Lanza F.C.,Nove de Julho University | De Moraes Santos M.L.,Federal University of Mato Grosso do Sul | Selman J.P.R.,Nove de Julho University | Silva J.C.,Nove de Julho University | And 5 more authors.
PLoS ONE | Year: 2015

Previous studies have proposed only one prediction equation for respiratory muscle strength without taking into consideration differences between ages in pediatric population. In addition, those researches were single-center studies. The objective of this study was to establish reference equations for maximal inspiratory pressure (PImax) and maximal expiratory pressure (PEmax) in children and teenagers. In a multicenter study, 450 healthy volunteers were evaluated (aged 6-18yrs). There were included volunteers with normal lung function. We excluded volunteers who could not perform the tests; participated in physical activity more than twice a week; were born prematurely; smokers; chronic respiratory, cardiologic, and/or neurologic diseases; had acute respiratory disease during the prior three weeks. The volunteers were divided into two groups: Group 6-11 (6-11yrs) and Group 12- 18 (12-18yrs). PImax and PEmax were measured according to statement. The mean PImax value was 85.6 (95%IC 83.6-87.6 cmH2O), and PEmax 84.6 (95%IC 85.5-86.2 cmH2O). The prediction equations for PImax and PEmax for Group 6-11 were 37.458- 0.559 + (age∗3.253) + (BMI∗0.843) + (age∗gender∗0.985); and 38.556 + 15.892 + (age∗3.023) + (BMI∗0.579) + (age∗gender∗0.881), respectively (R2 = 0.34 and 0.31, P<0.001). The equations for Group 12-18 were 92.472 + (gender∗9.894) + 7.103, (R2 = 0.27, P = 0.006) for PImax; and 68.113 + (gender∗17.022) + 6.46 + (BMI∗0.927), (R2 = 0.34, P<0.0001) for PEmax. This multicenter study determined the respiratory muscle strength prediction equations for children and teenagers. © 2015 Lanza et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Source

De Barros R.P.,State University of Alagoas | Viegas P.R.A.,Federal University of Sergipe | Da Silva T.L.,Federal University of Sergipe | De Souza R.M.,Federal University of Sergipe | And 4 more authors.
Pesquisa Agropecuaria Tropical | Year: 2010

The research aimed to evaluate the effect of vinasse on the chemical properties of a eutrophic Alfissol cultivated with sugarcane (S. officinarum spp.), for 10 years, in two areas of the Usina São José do Pinheiro, located in the city of Laranjeiras, Sergipe State, Brazil. The experimental design was randomized blocks, with ten replications, which consisted of two areas (Area a - cultivated with sugarcane and fertirrigated with vinasse, for over 10 years; and Area B - cultivated with sugarcane without vinasse fertigation) and three soil sampling depths (treatments): 0-15 cm, 15-30 cm, and 30-45 cm. The experimental areas dimensions were 50 m x 20 m (1,000 m2) and 30 samples were collected from each site. After the analysis of pH, soil organic matter (SOM), and levels of macro and micronutrients from soil samples, it was observed that the addition of vinasse to sugarcane crops, for ten years, has altered the soil chemical properties, with increase of soil organic matter and macronutrient content and decrease of micronutrients availability. Based on the results obtained, it was concluded that the application of vinasse increases the fertility of soil cultivated with sugarcane. Source

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