Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto

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.

Photoinduced nitric oxide and singlet oxygen release from ZnPC liposome vehicle associated with the nitrosyl ruthenium complex: synergistic effects in photodynamic therapy application.

Abstract: Under continuous photolysis at 675 nm, liposomal zinc phthalocyanine associated with nitrosyl ruthenium complex [Ru(NH.NHq)(tpy)NO] 3+ showed the detection and quantification of nitric oxide (NO) and singlet oxygen ( 1 O 2 ) release. Photophysical and photochemical results demonstrated that the interaction between the nitrosyl ruthenium complex and the photosensitizer can enable an electron transfer process from the photosensitizer to the nitrosyl ruthenium complex which leads to NO release. Synergistic action of both photosensitizers and the nitrosyl ruthenium complex results in the production of reactive oxygen species and reactive nitrogen species, which is a potent oxidizing agent to many biological tissues, in particular neoplastic cells.

Intra-populational variability of Nannotrigona testaceicornis Lepeletier 1836 (Hymenoptera, Meliponini) using relative warps analysis

Abstract: Due to the loss of biodiversity that occurs nowadays, the development of tools that allow us to characterize this biodiversity is of great importance. The recent developed relative warps analysis is very useful at this point. We characterized a population of Nannotrigona testaceicornis collected in different areas of Uberlândia using the relative warps analysis of the forewings. The two subpopulations of the urban environment were closer to each other than the one collected in a natural area outside the city. This greater proximity and diversification in relation to the natural area subpopulation is possibly due to inbreeding, that is enhanced by the smaller amount of natural food sources. The geometric morphometric of forewings showed to be a very powerful and informative tool to assess biodiversity within a population.

Meliponinae neotropicais: os generos Paratrigona Schwarz, 1938 e Aparatrigona Moure, 1951 (Hymenoptera, Apidae)

Abstract: The Neotropical genera Paratrigona Schwarz and Aparatrigona Moure are revised. Eleven new species (Paratrigona catabolonota, sp. n., P. eutaeniata, sp. n., P. onorei, sp.n., P. melanaspis, sp. n., P. compsa, sp.n., P. femoralis, sp. n., P. euxanthospila, sp. n., P. incerta, sp. n., P. crassicornis, sp. n., P. rinconi, sp. n. and P. permixta, sp. n.) and one new subspecies (P. lineata glabella, ssp. n.) are described. Diagnosis, key for worker of all species, drawings of the striking features of the males of P. opaca, P. lophocoryphe, P. prosopiformis, P. haeckeli, P. lineata lineata and P. lineata glabella, and a cladistic analysis are also included.

The conquest of fresh water by the palaemonid shrimps: an evolutionary history scripted in the osmoregulatory epithelia of the gills and antennal glands

Abstract: Extant Palaemonidae occupy aquatic environments that have generated physiological diversity during their evolutionary history. We analyze ultrastructural traits in gills and antennal glands of palaemonid species from distinct osmotic niches, and employ phylogenetic comparative methods to ascertain whether transformations in their osmoregulatory epithelia have evolved in tandem, driven by salinity. Gill pillar cells exhibit apical evaginations whose surface density (Sv, μm2 plasma membrane area/μm3 cytoplasmic volume) ranges from 6.3–7.1 in Palaemon, and 0.7–38.4 in Macrobrachium. In the septal cells, Sv varies from 8.9–10.0 in Palaemon, and 3.3–21.6 in Macrobrachium; mitochondrial volumes (Vmit) range from 43.3–46.8% in Palaemon and 34.9–53.4% in Macrobrachium. In the renal proximal tubule cells, apical microvilli Sv varies from 27.0–34.3 in Palaemon, and 38.3–47.8 in Macrobrachium; basal invagination Sv ranges from 18.7–20.0 in Palaemon and 30.8–40.8 in Macrobrachium. Septal cell Sv shows phylogenetic signal; evagination height/density, apical Sv, and Vmit vary independently of species relatedness. Salt transport capability by the gill and renal epithelia has increased during palaemonid evolution, reflecting amplified membrane availability for ion transporter insertion. These traits underpin the increased osmotic gradients maintained against the external media. Gill ultrastructure and osmotic gradient have evolved in tandem, driven by salinity at the genus level. © 2015 The Linnean Society of London, Biological Journal of the Linnean Society, 2015, 114, 673–688.