Cytogenetic study of the genus Saguinus (Callithrichidae, Primates)

Oito subespécies do gênero Saguinus (S. f. fuscicollis, S. f. weddelli, S. b. bicolor, S. b. martinsi, S. m. mystax, S. i. imperator, S. m. midas e S. m. niger) foram estudadas citogeneticamente, das quais cinco (S. f. fuscicollis, S. f. weddelli, S. b. martinsi, S. m. mystax e S. i. imperator) tiveram seu cariótipo descrito pela primeira vez neste estudo. Os cariótipos foram analisados por coloração convencional, pelos padrões de bandas G, C e NOR, e pelo método de bandeamento sequencial G/C. Todos os espécimens mostraram o mesmo número diplóide (2n = 46 cromossomos) e os padrões de bandas G, C e NOR foram muito similares entre as subespécies, diferindo apenas na quantidade e distribuição de heterocromatina constitutiva de alguns autossomos. Heterocromatina constitutiva presente na região telomérica de alguns cromossomos foi observada apenas em S. f. fuscicollis e S. f. weddelli. O cromossomo X foi igual em todas subespécies, porém, o cromossomo Y diferiu em morfologia e tamanho. Quimerismo cromossômico XX/XY foi verificado em todas as subespécies.

Myxidium volitans sp. nov., a parasite of the gallbladder of the fish, Dactylopterus volitans (Teleostei: Triglidae) from the Brazilian Atlantic coast: morphology and pathology

Myxidium volitans sp. nov. (Myxozoa: Myxidiidae) parasitizing the hypertrophied green-brownish gallbladder of the teleost Dactylopterus volitans, collected in the Atlantic coast near Niterói, Brazil was described based on ultrastructural studies. The spores were fusiform, sometimes slightly crescent-shaped on average 21.7 ± 0.3 µm (mean ± standard deviation) (n = 50) long and 5.6 ± 0.4 µm (n = 30) wide. The spore wall was thin and smooth, comprising two equally-sized valves joined by a hardly visible sutural ridge. Spores containing two pyriform polar capsules (PC) (5.0 ± 0.4 × 2.3 ± 0.3 µm) (n = 30) are situated in each extremity of the spore. The PC wall was composed of hyaline layer (0.20-0.29 µm thick) and by a thin external granular layer. Each PC contains a polar filament (PF) with irregular arrangements that was projected from its apical region to the bases of PC and coiled laterally from bases to the tip of PC. Some regular striations and S-like structures in the periphery of the PFs with four-five irregular sections were observed. Based on the spore morphology, ultrastructural differences and the specificity of the host we describe this parasite as a new myxosporidian, named M. volitans sp. nov.

Geology, petrology and geochronology (Pb-Pb) of the Serra da Bocaina Formation: evidence of an Orosirian Amoguijá Magmatic Arc in the Rio Apa Terrane, south of the Amazonian Craton

Neste trabalho apresentam-se os resultados do mapeamento geológico e caracterização petrológica da Formação Serra da Bocaina, pertencente ao Arco Magmático Amoguijá do Terreno Rio Apa, sul do Cráton Amazônico. A Formação Serra da Bocaina, na serra da homônima, consiste de rochas vulcânicas paleoproterozoicas de composição intermediária a predominantemente ácida, classificadas como andesito e riolitos, subdivididas em cinco fácies petrográficas sendo quatro piroclásticas e uma efusiva, que mantêm contato tectônico, a leste, com o Granito Carandá. Nas rochas estudadas estruturas tectônicas são formadas em duas fases deformacionais compressivas de natureza dúctil e dúctil-rúptil, respectivamente. A primeira fase, mais intensa, é observada ao longo de toda a área estudada e é responsável pela Zona de Cisalhamento Santa Rosa enquanto a segunda fase é mais discreta e localizada. O tratamento geoquímico indica que essas rochas foram geradas num ambiente de arco-vulcânico a partir de um magmatismo calcioalcalino de médio a alto-K, peraluminoso. Estas rochas retratam um evento magmático extrusivo, de natureza explosiva, relacionado à evolução do Arco Magmático Amoguijá, conforme resultado Pb-Pb em zircão de 1877,3 ± 3,9 Ma., interpretada como idade de cristalização destas rochas.

Assessment of the physiological potential of spinach seeds (Tetragonia tetragonoides (Pall.) Kuntze)

The efficiency of vigor tests in assessing the physiological potential of seeds depends on their standardization for different species. In this context, the research aimed to study specific methodologies to evaluate the vigor of spinach seeds (Tetragonia tetragonoides). For this purpose, five lots of spinach seed cv. New Zealand were submitted to germination, first count of germination, seedling emergence in the field, accelerated aging (with and without use of saturated solution of NaCl at 41and 45 ºC for 24,48 and 72 hours), controlled deterioration (18,21 and 24% seed water content adjustments for 24 hours at 45 ºC) and electrical conductivity tests with variations inwater volume (25, 50 and 75 mL), seed quantity (25 and 50) and soaking period (1, 2, 4, 8,12, 16 and 24 hours) at 25 ºC. The first count test allowed obtaining preliminary information about seed vigor, and other tests in general showed similarity with seedling emergence in the field. Thus, it was concluded that traditional accelerated aging test 24 h /41 ºC and accelerated aging test with saturated salt solution for 24 h at 41 ºC and 45 ºC, and controlled deterioration test with 21% seed water content / 24 h / 45 ºC were all efficient for evaluating the physiological potential of spinach seeds.

Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Biomass and elemental composition (C, N, H) of the periphytic community attached to Polygonum punctatum Ell. in a subtropical reservoir and its relationship to environmental factors

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Polymorphism analysis in genes of the somatotropic axis in Nellore cattle selected for growth

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Five Percent 5-Fluorouracil in a Cream or for Superficial Peels in the Treatment of Advanced Photoaging of the Forearms: A Randomized Comparative Study

BACKGROUND The antimetabolite 5-fluorouracil (5-FU) is used for topical treatment of actinic keratosis. Overall improvement in the skin is also observed. Additionally, 5-FU was reported to be used for superficial peels.OBJECTIVES To evaluate the efficacy and safety of 5% 5-FU cream compared with peels for photodamaged forearms.METHODS This interventional, randomized, comparative, evaluator-blind study included 32 patients with severe photoaging of forearms. The regimens comprised either application of 5% 5-FU cream everyday for 4 weeks on 1 forearm and 4 weekly peels on the other. Efficacy assessment included: clinical photodamage scores, opinion of patients and investigators, and blind photographic evaluation by independent observers. Skin biopsies were performed for histologic and immunohistochemical analysis. Safety evaluation comprised observation of adverse events.RESULTS Clinical and histologic findings confirmed the benefits of topical 5% 5-FU, in cream or peels, which improved skin appearance and decreased the dermal elastotic material. Immunohistochemistry showed reduced levels of epidermal p53 and increase in the level of procollagen I. Results were maintained after 6 months. Predictable adverse events occurred, with no differences between treatments. Patients reported better tolerability to peels.CONCLUSION Five percent 5-FU cream or peels was safe and effective for the treatment of photodamaged forearms. Decreased epidermal p53 levels and new dermal collagen were confirmed.

Morphological aspects of the testes of 18 species of terrestrial of Heteroptera from Northwestern Sao Paulo (Brazil)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Cytotaxonomy of the Brasiliensis subcomplex and the Triatoma brasiliensis complex (Hemiptera: Reduviidae: Triatominae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Assessment of the breakdown products of solar/UV induced photolytic degradation of food dye tartrazine

The food dye tartrazine (CI 19140) was exposed to UV irradiation from an artificial source, a mercury vapor lamp, and a natural one, sunlight. It was observed that conditions such as energy dose, irradiation time, pH and initial dye concentration affected its discoloration. There was 100% of color removal, after 30 min of irradiation, when a dye solution 1 x 10(-5) mol L-1 was submitted to an energy dose of 37.8 J cm(-2). Liquid Chromatography coupled to Diode Array Detection and Mass Spectrometry confirmed the cleavage of the chromophore group and the formation of five by-products at low concentration. Although by-products were formed, the Salmonella/microsome mutagenicity assay performed for both, the dye solution at a dose of 5.34 mg/plate and the solutions obtained after exposure to UV irradiation, did not present mutagenic activity for TA98 and TA100 with and without S9. (C) 2014 Elsevier Ltd. All rights reserved.

Labral gland in soldiers of the neotropical termite Cornitermes cumulans (Isoptera: Termitidae: Syntermitinae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Five new species of the feather mite genus Trouessartia Canestrini from South America (Acari: Trouessartiidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Comparative analysis of the male reproductive accessory glands of bat species from the five Brazilian subfamilies of the family Phyllostomidae (Chiroptera)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ultrasonography of the conceptus development from days 15 to 60 of pregnancy in non-cyclic recipient mares

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)