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排序方式: 共有175条查询结果,搜索用时 31 毫秒
1.
Telma M. T. Zorn Estela M. A. F. Bevilacqua Dr. P. A. Abrahamsohn 《Cell and tissue research》1986,244(2):443-448
Summary An ultrastructural study of the features and distribution of collagen fibrils was performed in the endometrium of virgin and pregnant (2nd to 11th day) mice. Collagen-containing structures were observed in the cytoplasm of fibroblasts on the 2nd day of pregnancy. Treatment of tissues with lanthanum nitrate established that these structures were intracytoplasmic. Their association with lysosome-like bodies suggested the occurrence of intracellular digestion of collagen, probably connected with remodeling of the endometrial stroma prior to decidualization. On the 4th day of pregnancy, very few collagen fibrils were present in the intercellular space. From the 6th day of pregnancy onwards, thick collagen fibrils were observed between decidual cells. The diameter of these fibrils measured up to 300 nm whereas the fibrils present in the endometrium of virgin mice measured 40–68 nm. 相似文献
2.
Olívia Moraes Ruberti Andressa Silva Sousa Laís Rosa Viana Moiss Felipe Pereira Gomes Alessandra Medeiros Maria Cristina Cintra Gomes Marcondes Luciano de Figueiredo Borges Carlos Cesar Crestani Cristiano Mostarda Telma Ftima da Cunha Moraes Rafael Renatino Canevarolo Maria Andreia Delbin Bruno Rodrigues 《Journal of cellular physiology》2021,236(2):1105-1115
This study aimed to evaluate the impact of aerobic training (AT) on autonomic, cardiometabolic, ubiquitin‐proteasome activity, and inflammatory changes evoked by myocardial infarction (MI) in ovariectomized rats. Female Wistar rats were ovariectomized and divided into four groups: sedentary + sham (SS), sedentary + MI (SI), AT + sham surgery (TS), AT + MI (TI). AT was performed on a treadmill for 8 weeks before MI. Infarcted rats previously subjected to AT presented improved physical capacity, increased interleukin‐10, and decreased pro‐inflammatory cytokines. Metabolomic analysis identified and quantified 62 metabolites, 9 were considered significant by the Vip Score. SS, SI, and TS groups presented distinct metabolic profiles; however, TI could not be distinguished from the SS group. MI dramatically increased levels of dimethylamine, and AT prevented this response. Our findings suggest that AT may be useful in preventing the negative changes in functional, inflammatory, and metabolic parameters related to MI in ovariectomized rats. 相似文献
3.
Ester Alves Ferreira Bordini Caroline Coradi Tonon Renata Serignoli Francisconi Fernando Augusto Cintra Magalhães Patrícia Milagros Maquera Huacho Telma Lombardo Bedran 《Biofouling》2013,29(7):815-825
AbstractThis study evaluated the antibacterial activity of terpinen-4-ol against Streptococcus mutans and Lactobacillus acidophilus and its influence on gbpA (S. mutans) and slpA (L. acidophilus) gene expression. As measured by XTT assay, the concentrations of terpinen-4-ol that effectively inhibited the biofilm were 0.24% and 0.95% for S. mutans and L. acidophilus, respectively. Confocal microscopy revealed the presence of a biofilm attached to the enamel and dentin block surfaces with significant terpinen-4-ol effects against these microorganisms. The expression of the gbpA and slpA genes involved in adherence and biofilm formation was investigated using RT-PCR. Expression of these genes decreased after 15?min with 0.24% and 0.95% terpinen-4-ol in S. mutans and L. acidophilus, respectively. These findings demonstrate the antimicrobial activity of terpinen-4-ol and its ability to modulate the expression of gbpA and slpA genes, emphasizing the therapeutic capacity of terpinen-4-ol as an alternative to inhibit adherence in biofilm. 相似文献
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5.
Phosphoglycerol, triacylglycerol, diacylglycerol, and free fatty acid content was studied in eggs of the codling moth Cydia pomonella at the white, red ring, and black head developmental stages. The composition of total phosphoglycerols and of the three classes of neutral lipids was also analyzed. The highest total lipid content was found in eggs at the white stage, the amount decreasing during development mainly as a result of a diminution in the quantity of phosphoglycerols, which account for approximately 50% of total content at all stages of egg development. The amount of triacylglycerols and free fatty acids changes significantly during development, whereas only minor changes were found in diacyglycerol levels. The total phosphoglycerol acyl composition of eggs at the white and red ring stages is similar, whereas differences are evident at the black head stage of development. Triacylglycerols and free fatty acids are enriched in saturated fatty acids in all analyzed stages. The acyl profile of diacylglycerols is different at each stage. The unsaturation index decreases in diacylglycerols and free fatty acids as a function of egg development. The results of the present paper suggest that triacylglycerols may constitute an important source of energy during the final period of egg development while phosphoglycerols may function as fuel during the beginning. Phosphoglycerols could be precursors for the triacylglycerol biosynthesis that takes place between white and red ring stages. 相似文献
6.
Dartora AB Bertolin TE Bilibio D Silveira MM Costa JA 《Zeitschrift für Naturforschung. C, Journal of biosciences》2002,57(7-8):666-670
Aspergillus oryzae CCT 3940, Aspergillus awamori NRRL 3112 and a Trichoderma sp.) were compared for their capacity to produce endo-polygalacturonase (endo-PG) in solid state fermentation. Maximum pectinolytic activity was reached in 72 h of growth, the best two fungal strains being A. niger T0005007-2 and A. oryzae CCT 3940. Three types of commercial purified pectin and four of unprocessed pectin (tangerine, orange, Tahiti lime and sweet lime rind) were used to assess the effect of pectin on the production of endo-PG by A. niger T0005007-2. Maximum pectinolytic activity was achieved using 6 and 10% (w/w) of purified pectin as inducer. Depending on the origin of the commercial pectin used as inducer, maximum endo-PG levels varied from 223 to 876 units per gram of dry medium (one endo-PG unit (U) was defined as the quantity of enzyme which caused a reduction in viscosity of 50% in a 1% w/v solution of pectin in 30 min), indicating that care should be taken when choosing this component of the medium. When the crude pectins were used as inducers at the same concentration as purified pectin, maximum endo-PG activities were 250-300 units/g. However, by increasing the amount of Tahiti lime rind to 50% (w/w) maximum endo-PG was 919 U/g, thus opening up the possibility of a low cost medium for endo-PG production. 相似文献
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8.
Ana Freitas Ribeiro Alessandra Cristina Guedes Pellini Beatriz Yuko Kitagawa Daniel Marques Geraldine Madalosso Gerrita de Cassia Nogueira Figueira Jo?o Fred Ricardo Kerti Mangabeira Albernaz Telma Regina Marques Pinto Carvalhanas Dirce Maria Trevisan Zanetta 《PloS one》2015,10(3)
This case-control study aimed to assess the risk factors for death from influenza A(H1N1)pdm09 in patients with laboratory confirmation, who had severe acute respiratory illness-SARI and were hospitalized between June 28th and August 29th 2009, in the metropolitan regions of São Paulo and Campinas, Brazil. Medical charts of all the 193 patients who died (cases) and the 386 randomly selected patients who recovered (controls) were investigated in 177 hospitals. Household interviews were conducted with those who had survived and the closest relative of those who had died. 73.6% of cases and 38.1% of controls were at risk of developing influenza-related complications. The 18-to-59-year age group (OR = 2.31, 95%CI: 1.31–4.10 (reference up to 18 years of age)), presence of risk conditions for severity of influenza (OR = 1.99, 95%CI: 1.11–3.57, if one or OR = 6.05, 95%CI: 2.76–13.28, if more than one), obesity (OR = 2.73, 95%CI: 1.28–5.83), immunosuppression (OR = 3.43, 95%CI: 1.28–9.19), and search for previous care associated with the hospitalization (OR = 3.35, 95%CI: 1.75–6.40) were risk factors for death. Antiviral treatment performed within 72 hours of the onset of symptoms (OR = 0.17, 95%CI: 0.08–0.37, if within 48hours, and OR = 0.30, 95%CI: 0.11–0.81, if between 48 and 72 hours) was protective against death. The identification of high-risk patients and early treatment are important factors for reducing morbi-mortality from influenza. 相似文献
9.
Telma da Silva Warren Albertin Christine Dillmann Marina Bely Stéphane la Guerche Christophe Giraud Sylvie Huet Delphine Sicard Isabelle Masneuf-Pomarede Dominique de Vienne Philippe Marullo 《PloS one》2015,10(5)
Despite its biotechnological interest, hybridization, which can result in hybrid vigor, has not commonly been studied or exploited in the yeast genus. From a diallel design including 55 intra- and interspecific hybrids between Saccharomyces cerevisiae and S. uvarum grown at two temperatures in enological conditions, we analyzed as many as 35 fermentation traits with original statistical and modeling tools. We first showed that, depending on the types of trait – kinetics parameters, life-history traits, enological parameters and aromas –, the sources of variation (strain, temperature and strain * temperature effects) differed in a large extent. Then we compared globally three groups of hybrids and their parents at two growth temperatures: intraspecific hybrids S. cerevisiae * S. cerevisiae, intraspecific hybrids S. uvarum * S. uvarum and interspecific hybrids S. cerevisiae * S. uvarum. We found that hybridization could generate multi-trait phenotypes with improved oenological performances and better homeostasis with respect to temperature. These results could explain why interspecific hybridization is so common in natural and domesticated yeast, and open the way to applications for wine-making. 相似文献
10.
Daniele Gabriel-Costa Telma Fatima da Cunha Luiz Roberto Grassmann Bechara Rodrigo Soares Fortunato Luiz Henrique Marchesi Bozi Marcele de Almeida Coelho Maria Luiza Barreto-Chaves Patricia Chakur Brum 《PloS one》2015,10(5)