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101.
Marcos Aparecido Gimenes Catalina Romero Lopes Maria Leticia Galgaro José Francisco Montenegro Valls Gary Kochert 《Euphytica》2000,116(3):187-195
Wild Arachis germplasm includes potential forage species, such as the rhizomatous Arachis glabrata and the stoloniferous A. pinto and A. repens. Commercial cultivars of A. pintoi have already been released in Australia and in several Latin American countries, and most of these cultivars were derived from a single accession of A. pintoi (GK 12787). Arachis repens is less productive as a forage plant than is A. pintoi. However, it can be crossed with A. pintoi, and thus has good potential as germplasm for the improvement of A. pintoi. Arachis repens is also used as an ornamental plant and ground cover. Many new accessions of these two stoloniferous species are now available, and they harbor significant genetic variability beyond that available in the few older accessions, previously available. Therefore, these new accessions need to be conserved, documented and considered in terms of their potential for crop improvement and direct commercial use. Sixty-four accessions of this new germplasm were analyzed using RAPD analysis. Most of the accessions of A. repens grouped together into a clearly distinct group. In general, the accessions from the distinct valleys of the Jequitinhonha, São Francisco and Paranã rivers did not group together, suggesting there is not a tight relation between dispersion by rivers and the geographic distribution of genetic variation in these species. 相似文献
102.
Pahua-Ramos ME Ortiz-Moreno A Chamorro-Cevallos G Hernández-Navarro MD Garduño-Siciliano L Necoechea-Mondragón H Hernández-Ortega M 《Plant foods for human nutrition (Dordrecht, Netherlands)》2012,67(1):10-16
Avocado seed contains elevated levels of phenolic compounds and exhibits antioxidant properties. We investigated the effect
of Avocado Seed Flour (ASF) on the lipid levels in mice on a hyperlipidemic diet. The concentration of phenols was determined
by high-performance liquid chromatography, antioxidant activity was evaluated using the Trolox equivalent antioxidant capacity
method, and dietary fiber was measured using the Association of Official Analytical Chemists (AOAC) method. The LD50 of ASF was determined using Lorke’s method and hypolipidemic activity was evaluated in a hypercholesterolemic model in mice.
Protocatechuic acid was the main phenolic compound found in ASF, followed by kaempferide and vanillic acid. The total phenolic
content in the methanolic extract of ASF was 292.00 ± 9.81 mg gallic acid equivalents/g seed dry weight and the antioxidant
activity resulted in 173.3 μmol Trolox equivalents/g DW. In addition, a high content of dietary fiber was found (34.8%). The
oral LD50 for ASF was 1767 mg/kg body weight, and treatment with ASF significantly reduced the levels of total cholesterol, LDL-C,
and prediction of the atherogenic index. Therefore, the antioxidant activity of phenolic compounds and dietary fiber in ASF
may be responsible for the hypocholesterolemic activity of ASF in a hyperlipidemic model of mice. 相似文献
103.
PC Jimenez DV Wilke EG Ferreira R Takeara MO de Moraes ER da Silveira TM da Cruz Lotufo NP Lopes LV Costa-Lotufo 《Marine drugs》2012,10(5):1092-1102
The present study reports the identification of two new staurosporine derivatives, 2-hydroxy-7-oxostaurosporine (1) and 3-hydroxy-7-oxostaurosporine (2), obtained from mid-polar fractions of an aqueous methanol extract of the tunicate Eudistoma vannamei, endemic to the northeast coast of Brazil. The mixture of 1 and 2 displayed IC50 values in the nM range and was up to 14 times more cytotoxic than staurosporine across a panel of tumor cell lines, as evaluated using the MTT assay. 相似文献
104.
Jose Gustavo L. Almeida Ana Isabel V. Maia Diego V. Wilke Edilberto R. Silveira Raimundo Braz-Filho James J. La Clair Leticia V. Costa-Lotufo Otília Deusdenia L. Pessoa 《Marine drugs》2012,10(12):2846-2860
The zoanthids Palythoa caribaeorum and Protopalythoa variabilis are among the most abundant marine species along the Brazilian coast. We now report the isolation and structure elucidation of two unprecedented sulfonylated ceramides, palyosulfonoceramide A (1) and palyosulfonoceramide B (2) from specimens collected off Brazil’s northeastern coast. The structures of 1 and 2 were established using a combination of NMR analyses, including: evaluation of 1H, 13C, 1H–1H COSY, 1H–13C HSQC, 1H–13C HMBC, and 1H–15N HMBC NMR spectra, high-resolution mass spectrometry and chemical degradation. In addition, we also isolated the corresponding known ceramides, N-((2S,3R,4E,8E)-1,3-dihydroxyoctadeca-4,8-dien-2-yl)-hexadecanamide (3) and N-((2S,3R,4E)-1,3-dihydroxyoctadeca-4-en-2-yl)-hexadecanamide (4), which provided further support for the assignments of 1 and 2. 相似文献
105.
Ana Navas Javier Machín Santiago Beguería Manuel López-Vicente Leticia Gaspar 《Agroforestry Systems》2008,72(3):173-185
Large changes in land use have occurred in the Central Spanish Pyrenees during the twentieth century. This mountain area supported
an intense human use since the Middle Ages, that greatly transformed the natural landscape. The land uses changed dramatically
during the first half of the twentieth century, due to major socioeconomic forces which lead to depopulation and land abandonment.
Since then, a process of natural vegetation recovery has taken place. The anthropogenic impact during centuries deteriorated
the soil quality, threatening the sustainability of agroecosystems and the natural vegetation re-growth. In this study, a
soil survey was performed to identify the soil types and the physico-chemical properties of the soil that are relevant for
maintaining the soil function for the recovery of vegetation after land abandonment. The study was conducted in the Arnás
River catchment, which is representative of the region. The highest cation exchange capacity (CEC), nutrients, water retention,
water availability and infiltration rates, as well as the lowest pH and carbonates, occurred in Lithic Hapludolls and Calcic
Haploxerolls at the shady aspect, under a forest cover. Lithic Ustochrepts and Lithic Xerorthents on the sunny aspect, which
were covered by shrubs, were of lesser quality than were the deeper and better-developed soils on the shady aspect. This is
seen as an evidence of different patterns of soil degradation, which conditioned the re-growth of natural vegetation after
land abandonment. The results provide insights into the main soil factors that have affected the re-establishment of natural
vegetation in recent years. Recommendations are given for designing effective strategies for soil conservation after land
abandonment in similar mountain environments. 相似文献
106.
Richard R Lobo Banny S B Correia Yuli A Pea-Bermúdez Rafaela Vincenzi Caroline M da Silva Leticia L Panosso Caroline Ceribeli Luiz A Colnago Daniel R Cardoso Alexandre Berndt Rafael S B Pinheiro Ives C da S Bueno Antonio P Faciola 《Journal of animal science》2021,99(9)
This study aimed to evaluate the effect of dietary yerba mate (Ilex paraguariensis) extract (YME) on muscle metabolomics and physicochemical properties of lamb meat. Thirty-six uncastrated male lambs (90 d old) were fed experimental diets, which treatments consisted of 0%, 1%, 2%, and 4% inclusion of YME. Animals were fed for 50 d before slaughter. Muscle and meat samples were collected for metabolomics and meat quality analysis, respectively. The experiment was carried out in a randomized block design and analyzed using orthogonal contrasts. There was a quadratic effect of YME inclusion in tenderness (P < 0.05) and a positive linear effect on meat lightness (P < 0.05). No qualitative changes (P > 0.05) on individual metabolites were observed; however, changes in the quantitative metabolic profile were observed, showing that animals fed 1% and 2% of YME have a greater concentration of desirable endogenous muscle antioxidants, with direct impact on metabolic pathways related to beta-alanine metabolism and glutathione metabolism. Therefore, YME dietary supplementation up to 2% of the diet to lambs had little to no effects on the majority of meat quality traits evaluated; moreover, 4% of YME inclusion negatively affected feed intake and meat quality traits. 相似文献
107.
Lezama-Dávila CM Isaac-Márquez AP Zamora-Crescencio P Uc-Encalada Mdel R Justiniano-Apolinar SY del Angel-Robles L Satoskar A Hernández-Rivero L 《Fitoterapia》2007,78(3):255-257
Extracts of the root of Pentalinon andrieuxii, vernacular name of "contrahierva" (solen ak' in Mayan language, were investigated for their lethal effect on the protozoa Leishmania mexicana. The hexanes extract was highly effective to delay and eventually stop parasite survival. 相似文献
108.
Saito M Olby NJ Obledo L Gookin JL 《Journal of the American Animal Hospital Association》2002,38(5):437-443
Two standard poodles were evaluated for painful, episodic muscle cramps affecting their thoracic and pelvic limbs. Both dogs had been diagnosed with hypoadrenocorticism and were being treated with fludrocortisone acetate and prednisone when evaluated for muscle cramps. However, the muscle cramping started approximately 1 month prior to the diagnosis of hypoadrenocorticism. Findings on general physical examination included lethargy and dehydration. Neurological examination was normal between episodes. Serum biochemical abnormalities included hyperalbuminemia, azotemia, hyponatremia, hypochloremia, and hyperkalemia. Altering treatment to desoxycorticosterone pivalate resolved the electrolyte abnormalities and the episodes of muscle cramping in both dogs. The authors conclude that hypoadrenocorticism can be associated with episodes of painful muscle cramping in standard poodles. 相似文献
109.
Aline Costa de Lucio Antonio Sérgio Ferraudo Leticia Zoccolaro de Oliveira Adriana Santana do Carmo Benner Geraldo Alves Kele Amaral Alves Solange Almeida Luis Alfredo Deragon William Pereira Luisa Cunha Carneiro Vera Fernanda Martins Hossepian de Lima 《Tropical animal health and production》2014,46(5):765-770
The aim of this study was to evaluate the effects of breed and season on semen quality parameters of zebu bulls. Data (1,632 registers) of semen production from Gir (n?=?4) and Nelore (n?=?15) bulls were collected between October 2005 and November 2009. The ejaculates were collected twice a week during various seasons (summer, fall, winter, and spring) and evaluated for the following semen parameters: ejaculate volume, sperm concentration, sperm motility, forward progressive motility (FPM), and sperm morphology. Factor analysis was used to determine the relationship among variables. The effect of breed (Gir and Nelore) and season and their cross effect on each parameter and extracted factor were tested using ANOVA. A negative correlation (P?<?0.05) was observed between FPM and proximal droplet, as well as with abnormal loose head, abnormal small head, pouch formation, abnormal mid-peace, and strongly folded tail. Gir bull sperm showed more major defects, detached acrosome, and minor FPM (P?<?0.01), whereas Nelore bulls showed a higher number of sperm with normally loose head. 相似文献
110.
Cibanal Irene Laura Fernández Leticia Andrea Rodriguez Silvana Andrea Pellegrini Cecilia Noemí Gallez Liliana María 《European journal of plant pathology / European Foundation for Plant Pathology》2022,162(1):149-161
European Journal of Plant Pathology - Volatile fatty acids (VFAs) play a role in suppression of plant pathogens during anaerobic soil disinfestation (ASD), but it is unclear how VFAs in anaerobic... 相似文献