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771.
Shohreh Honarbakhsh Irina Suman-Horduna Lilian Mantziari Sabine Ernst 《Indian pacing and electrophysiology journal》2013,13(5):181-184
We report a case of a 67-year old male with a recent diagnosis of left ventricular noncompaction (LVNC), initially presenting with symptomatic ventricular ectopy and runs of non-sustained ventricular tachycardia (VT). This ventricular arrhythmia originated in a structurally normal right ventricle (RV) and was successfully localized and ablated with the aid of the three-dimensional mapping and remote magnetic navigation. 相似文献
772.
Daniel A. Medesani Lilian E. Ferré Ivana S. Canosa Gabriela R. Silveyra 《Invertebrate reproduction & development.》2013,57(2):104-110
Adult female crabs (Neohelice granulata) were treated during the post-reproductive period with both 17-hydroxyprogesterone (17PG) and methyl farnesoate (MF). During the 4-week in vivo assay, animals were fed hormone-enriched (17PG or MF) pellets twice a week, at a dose of 2 nmol/g of body weight. Additionally, at the middle of the in vivo experiment, ovarian explants were incubated in vitro with each hormone at a concentration of 15 μM for 24 h. At the end of the in vivo assay, both the gonadosomatic index and the vitellogenic protein content (Vg) of crabs treated with either 17PG or MF were significantly higher (p < 0.05) than the values of the concurrent controls. In addition, the hemolymphatic vitellogenin level of both hormonally treated groups was higher. At the end of the in vitro assay, ovary explants incubated with 17PG had a significantly higher (p < 0.05) protein synthesis and content of Vg proteins than controls. Ovary explants incubated with MF had similar levels to controls (p > 0.05). The involvement of these hormones in the regulation of ovarian growth during the reproductive cycle of N. granulata is discussed. 相似文献
773.
Cintia D. Leal Martins Fernanda Ramlov Nathália Peixoto Nocchi Carneiro Lisia M. Gestinari Bruno F. dos Santos Lilian M. Bento Cintia Lhullier Lidiane Gouvea Eduardo Bastos Paulo A. Horta Angelica R. Soares 《Journal of applied phycology》2013,25(4):1179-1187
Many types of macroalgae contain a wide range of bioactive compounds that have antioxidant potential. However, in contrast to terrestrial plants, only a few studies have reported the antioxidant activity of seaweeds. Therefore, extracts from 26 marine macroalgae species from the south and southeast coasts of Brazil were evaluated for their antioxidant activity, using the 2,2-diphenyl-2-picrylhydrazyl hydrate (DPPH) method and β-carotene/linoleic acid assay, and their total phenolic contents, through Folin–Ciocalteu method. Padina gymnospora, Sargassum vulgare, and Osmundaria obtusiloba presented the highest values of total phenolic content. Using β-carotene bleaching assay, Colpomenia sinuosa, Dictyota sp., Dichotomaria marginata, Ganonema farinosum, and Spyridia clavata presented up to 65 % of antioxidant activity. Some of the extracts showed more than 60 % of inhibition of DPPH in the lowest concentration (0.01 mg/mL), including Amansia sp., Bostrychia tenella, Cryptonemia seminervis, Hypnea musciformis, Plocamium brasiliense (1), and S. clavata. Both Amansia sp., and C. seminervis presented the most relevant antioxidant potential, with percentage of inhibition greater than 70 % in the three tested concentrations. These two species were then analyzed by nuclear magnetic resonance spectroscopy (NMR) and were selected for guided fractionation bioassay. They both presented lipid compounds, fatty acids, esters of fatty acids, triglycerides, and sterols as major components. The fractionation of extracts revealed that the organic fractions were responsible for the antioxidant activity. The results obtained through this work indicate that the analyzed seaweeds are a promising source of compounds with high antioxidant potential. 相似文献
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Lise Comte Juan Carvajal‐Quintero Pablo A. Tedesco Xingli Giam Ulrich Brose Tibor Ers Ana F. Filipe Marie‐Jose Fortin Katie Irving Claire Jacquet Stefano Larsen Sapna Sharma Albert Ruhi Fernando G. Becker Lilian Casatti Giuseppe Castaldelli Renato B. Dala‐Corte Stephen R. Davenport Nathan R. Franssen Emili García‐Berthou Anna Gavioli Keith B. Gido Luz Jimenez‐Segura Rafael P. Leito Bill McLarney Jason Meador Marco Milardi David B. Moffatt Thiago V. T. Occhi Paulo S. Pompeu David L. Propst Mark Pyron Gilberto N. Salvador Jerome A. Stefferud Tapio Sutela Christopher Taylor Akira Terui Hirokazu Urabe Teppo Vehanen Jean R. S. Vitule Jaquelini O. Zeni Julian D. Olden 《Global Ecology and Biogeography》2021,30(1):38-50
779.
Letícia do Nascimento Andrade de Almeida Rego Rosana Silistino-Souza Maria Tercília Vilela de Azeredo-Oliveira Lilian Madi-Ravazzi 《Genetics and molecular biology》2013,36(1):50-60
Zaprionus indianus is a drosophilid native to the Afrotropical region that has colonized South America and exhibits a wide geographical distribution. In contrast, Z. sepsoides is restricted to certain African regions. The two species differ in the size of their testes, which are larger in Z. indianus than in Z. sepsoides. To better understand the biology and the degree of differentiation of these species, the current study evaluated spermatogenesis in males of different ages by conventional staining techniques and ultrastructural analysis. Spermatogenesis and the ultrastructure of spermatozoa were similar in the two species, and the diploid number was confirmed to be 2n = 12. A greater number of spermatozoa were observed in young Z. indianus (1–3 days old) compared to Z. sepsoides males, which showed a higher frequency of cells at the early stages of spermatogenesis. The head of the sperm was strongly marked by silver staining, lacto-acetic orcein and the Feulgen reaction; the P.A.S. reaction revealed glycogen granules in the testes of both species. Both species presented similar arrangement of microtubules (9+9+2), two mitochondrial derivatives of different size and 64 spermatozoa per bundle. Such similarity within the genus Zaprionus with other species of Drosophila, indicates that these structures are conserved in the family Drosophilidae. The differences observed the number and frequency of sperm cells in the early stages of spermatogenesis, between the young males of Z. indianus and Z. sepsoides, are features that may interfere with reproductive success and be related to the invasive potential of Z. indianus. 相似文献
780.
José M. M. Lima Valter H. C. Silva Lilian T. F. M. Camargo Heibbe C. B. de Oliveira Ademir J. Camargo 《Journal of molecular modeling》2013,19(4):1727-1737
Nitric oxide (NO) is an important chemical compound involved in many physiological and pathological processes in living organisms. However, nitric oxide is a very reactive radical that needs to be carried through organisms to reach the desired biological target. With the aim of developing new compounds that can be used as biomedical NO carrier agents we carried out a theoretical investigation at B3LYP/6-31?+?G(d)/LANL2DZ level on the interaction of NO with RuTAP (Ruthenium tetraazaporphyrin) and Ru(L)TAP, where L?=?Clˉ, NH3, and Pyridine (Py)) and the oxidation state of Ru ranging from +1 to +3. The theoretical calculation results show that the geometric and electronic parameters of the Ru–NO bond are highly dependent on the oxidation state of Ru and of the chemical nature of ligand L at axial position. The results also show clearly that RuTAP and Ru(L)TAP are good potential candidates to be used as NO carriers in living organisms. 相似文献