Institution
Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto
Education•
About: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto is a based out in . It is known for research contribution in the topics: Population & Genus. The organization has 2143 authors who have published 3674 publications receiving 71071 citations. The organization is also known as: FFCLRP & FFCLRP-USP.
Topics: Population, Genus, Catalysis, Ruthenium, Elevated plus maze
Papers published on a yearly basis
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TL;DR: It is demonstrated that pkcA overexpression during FOH exposure causes increased cell death, and Mutant analyses imply that MAP kinases are involved in the signal transduction in response to the effects caused by FOH.
Abstract: Previously, we demonstrated that the Aspergillus nidulans calC2 mutation in protein kinase C pkcA was able to confer tolerance to farnesol (FOH), an isoprenoid that has been shown to inhibit proliferation and induce apoptosis. Here, we investigate in more detail the role played by A. nidulans pkcA in FOH tolerance. We demonstrate that pkcA overexpression during FOH exposure causes increased cell death. FOH is also able to activate several markers of endoplasmic reticulum (ER) stress and the unfolded protein response (UPR). Our results suggest an intense cross-talk between PkcA and the UPR during FOH-induced cell death. Furthermore, the overexpression of pkcA increases both mRNA accumulation and metacaspases activity, and there is a genetic interaction between PkcA and the caspase-like protein CasA. Mutant analyses imply that MAP kinases are involved in the signal transduction in response to the effects caused by FOH.
37 citations
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TL;DR: In this article, the electronic structure of mono, bis and trihydroxylated derivatives in the B-ring of the flavylium cation was studied and the AM1 semi-empirical method of molecular orbital calculations was used Data showed that substitution in the b-ring causes resonance increase between this ring and the C-ring, except for substitution on C(3′) bond orders.
Abstract: The electronic structure of mono, bis and trihydroxylated derivatives in the B-ring of the flavylium cation was studied The AM1 semiempirical method of molecular orbital calculations was used Data showed that substitution in the B-ring causes resonance increase between this ring and the C-ring, except for substitution on C(3′) Bond orders were interpreted through the variation in the contribution of resonance structures and they helped to explain the relative stability of the several dissubstituted isomers Another factor that contributes to this stability is the formation of a hydrogen bond in the B-ring and between the B-and C-rings The rotation enthalpies in the B-ring were calculated and they confirm that the rotation on the C(2)-C(1′) bond is free in the compounds with substitution on position 3′ The molecule planarity can be attributed to the interaction between the oxygen atom in the C-ring and the hydrogen atoms in the B-ring, or between the hydrogen atoms in these rings The charge variations are in agreement with the proposed resonance structures Substitution in the B-ring does not affect the sites of basic and nucleophilic attack
37 citations
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TL;DR: A phylogenetic analysis of Syntermitinae is presented, including representatives of all genera of the subfamily, along with all 12 species assigned formerly to the genus Armitermes Wasmann, and all 4 new species described herein, and a dichotomous key, based on soldiers, is provided.
Abstract: We present a comprehensive phylogenetic analysis of Syntermitinae, including representatives of all genera of the subfamily, along with all 12 species assigned formerly to the genus Armitermes Wasmann (Termitidae, Syntermitinae), and 4 new species described herein. Syntermitinae was recovered as a natural group and the hypothesis that the frontal tube indicates convergence between Syntermitinae and Nasutitermitinae was corroborated. Also, several diagnostic characters proposed in the original description of Syntermitinae are discussed. Alongside the phylogenetic study, a taxonomic revision of the Neotropical genus Armitermes was carried out, resulting in division of the genus into four genera. Taxonomic novelties are: Armitermes now includes A. armiger (Motschulsky), A. bidentatus Rocha & Cancello sp.n. and A. spininotus Rocha & Cancello sp.n.; Silvestritermes Rocha & Cancello gen.n. includes S. euamignathus (Silvestri) comb.n., S. lanei (Canter) comb.n., S. gnomus (Constantino) comb.n., S. duende Rocha & Cancello sp.n., S. minutus (Emerson) comb.n., S. almirsateri Rocha & Cancello sp.n. and S. holmgreni (Snyder) comb.n.; Uncitermes Rocha & Cancello gen.n. includes U. teevani (Emerson) comb.n.; Mapinguaritermes Rocha & Cancello gen.n. includes M. peruanus (Holmgren) comb.n. and M. grandidens (Emerson) comb.n. A new synonymy is proposed for A. cerradoensis Mathews under S. euamignathus. All soldiers are described and illustrated, as are the mandibles and digestive tract of the worker and the imago caste, when available. We provide a dichotomous key, based on soldiers, for all genera of Syntermitinae, and distribution maps and dichotomous keys, based on soldiers, for the species of Armitermes and all the new genera described herein.
37 citations
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TL;DR: Ocelots and pumas showed nocturnal and cathemeral activity, respectively, whereas humans were diurnal, and the Mardia-Watson-Wheeler test showed significant diss similarity between their daily distributions of records.
37 citations
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TL;DR: The antimicrobial activity of ethanolic extract and pure compounds of Gomphrena celosioides have been screened by Kirby-Bauer method and results showed significant activity against Staphylococcus aureus and Salmonella typhi.
Abstract: The antimicrobial activity of ethanolic extract and pure compounds of Gomphrena celosioides have been screened by Kirby-Bauer method. Quantitative determination of 4-hydroxy-3-methoxy-benzoic acid in stems, leaves, flowers and roots was established by TLC-densitometry. Results showed significant activity against Staphylococcus aureus and Salmonella typhi. There were no significant differences in the determined benzoic acid derivative.
37 citations
Authors
Showing all 2195 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jon Lloyd | 80 | 230 | 30995 |
Peter C. Ford | 74 | 495 | 20821 |
Frederico Guilherme Graeff | 60 | 183 | 12209 |
Marcus Lira Brandão | 54 | 243 | 9248 |
David W. Roubik | 54 | 177 | 10070 |
Richard J. Ward | 53 | 242 | 9502 |
Juan Cornejo | 49 | 147 | 6478 |
Norberto Peporine Lopes | 47 | 457 | 12031 |
Carlos Alemán | 47 | 634 | 11349 |
Klaus Hartfelder | 45 | 150 | 7708 |
Valtencir Zucolotto | 45 | 212 | 6253 |
Rosane Marina Peralta | 44 | 212 | 5701 |
Antonio Claudio Tedesco | 44 | 307 | 6778 |
Roberto M. Torresi | 44 | 213 | 5822 |
Zilá Luz Paulino Simões | 43 | 113 | 8020 |