EXEMPLOS BRASILEIROS DE GEOGRAFIA HISTÓRICA: considerações sobre as obras de Maurício Abreu e Antonio Carlos Robert Moraes

DOI: 10.12957/geouerj.2013.6913 Este artigo busca apresentar e discutir a Geografia Histórica no Brasil na atualidade.Como exemplos, foram eleitas as obras de dois grandes intelectuais da GeografiaBrasileira, Mauricio de Almeida Abreu e Antonio Carlos Robert Moraes.Desenvolvendo investigações a partir de diálogos entre as ciências sociais, em geral, e,em particular, entre a Geografia e a História, esses autores acabaram instaurando duasgrandes tendências, dois eixos distintos de estudo de geografia histórica no Brasil: umeixo pelo Rio de Janeiro, pela Universidade Federal do Rio de Janeiro (UFRJ) e outro,por São Paulo, pela Universidade de São Paulo (USP). Maurício Abreu consolida emodela os estudos e debates em história e política urbana. Robert Moraes, por sua vez,consolida um modelo de investigação fortemente associado à geopolítica e à gestão doterritório nacional. Serão oferecidas informações sobre a vida e obras desses autores eexploradas suas produções intelectuais publicadas em livros, com o propósito dedemonstrar tanto as temáticas de investigação mais relevantes, quanto suas principaisreferências epistemológicas. Palavras-chave: Geografia Histórica; Geografia Brasileira; História Intelectual;Mauricio Abreu; Antonio Carlos Robert Moraes;   ABSTRACT This article seeks to present and discuss the Historical Geography in Brazil today. Asexamples, elected the works of two great intellectuals of Geography Brazilian, Mauriciode Almeida Abreu and Antonio Carlos Robert Moraes. Developing research fromdialogues between the social sciences in general and, in particular, between Geographyand History, these authors have just introducing two major trends, two separate study ofhistorical geography in Brazil: a shaft at Rio de Janeiro, Universidade Federal do Rio deJaneiro (UFRJ) and the other by São Paulo, the University of São Paulo (USP).Mauricio Abreu consolidates and modeling studies and debates in history and urban policy. Robert Moraes, in turn, consolidates research model strongly associated withgeopolitical and management of the national territory. Will be offered information aboutthe life and works of these authors and explored their intellectual productions publishedin books, in order to demonstrate both the thematic research more relevant, as its mainepistemological references. Keywords: Historical Geography; Brazilian Geography; Intellectual History; MauricioAbreu, Antonio Carlos Robert Moraes

Multidrug-resistant Escherichia coli and Salmonella spp. in pigs slaughtered for human consumption, a potential source for Humans?

Objective: To assess the role of pig reservoir as potential transmission vehicle of Salmonella spp. and E. coli to humans, in order to understand the epidemiology and population structure of these zoonotic agents in Portugal.This work was developed within the scope of the strategic project “ResisCampyOH”, supported by FMV-ULHT in 2022-2023.info:eu-repo/semantics/publishedVersio

Are Food Producing animals a source of multidrug-resistant E. coli and Salmonella spp.?

Objectives: To assess the role of food-producing animals as potential transmission vehicles of Salmonella spp. and E. coli to Humans, in order to understand the epidemiology and population structure of these zoonotic agents in Portugal.Faculty of Veterinary Medicine, Lusófona University, Research projects_ 2022_ ResisCampyOHN/

Nanostructured system based on hydroxyapatite and curcumin: A promising candidate for osteosarcoma therapy:A promising candidate for osteosarcoma therapy

Osteosarcoma is the most common type of bone cancer. Despite therapeutic progress, survival rates for metastatic cases or that do not respond well to chemotherapy remain in the 30% range. In this sense, the use of nanotechnology to develop targeted and more effective therapies is a promising tool in the fight against cancer. Nanostructured hydroxyapatite, due to its biocompatibility and the wide possibility of functionalization, is an interesting material to design nanoplatforms for targeted drug delivery. These platforms have the potential to enable the use of natural substances in the fight against cancer, such as curcumin. Curcumin is a polyphenol with promising properties in treating various types of cancer, including osteosarcoma. In this work, hydroxyapatite (n-HA) nanorods synthesized by the hydrothermal method were investigated as a carrier for curcumin. For this, first-principle calculations based on the Density Functional Theory (DFT) were performed, in which the modification of curcumin (CM) with the coupling agent (3-aminopropyl) triethoxysilane (APTES) was theoretically evaluated. Curcumin was incorporated in n-HA and the drug loading stability was evaluated by leaching test. Samples were characterized by a multi-techniques approach, including Fourier transform infrared spectroscopy (FTIR), UV–visible spectroscopy (UV–Vis), X-ray diffraction (XRD), X-ray fluorescence spectrometry (FRX), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), zeta potential analysis (ζ), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The results show that n-HAs with a 90 nm average size were obtained and successful incorporation of curcumin in the nanostructure was achieved. Cell viability and the number of osteosarcoma cells were decreased by CMAP-HA treatment. Furthermore, the stability test suggests that hydroxyapatite nanoparticles present great potential for the transportation of curcumin in the bloodstream, crediting this system for biological performance evaluations aiming at the treatment of osteosarcomas. Keywords: nanostructures, curcumin, hydroxyapatite, osteosarcoma

Systemic infection by Spencermartinsiella sp. in a Nile crocodile (Crocodylus niloticus)

A male adult crocodile (Crocodylus niloticus) was diagnosed with systemic yeast infection. Histologically, there were extensive areas of necrosis in the lung, which were associated with a diffuse severe lympho-plasmo-histiocytic inflammatory infiltrate, with numerous multinucleated giant cells, and myriads of intralesional pseudo-hyphae and yeast like organisms within distended foveolae. Necrotic foci were also observed in the mucosa of the digestive tract, trachea, tunica intima of arteries, liver, and heart, with a marked inflammatory lympho-histiocytic infiltrate, with large numbers of epithelioid macrophages and giant cells, and intralesional and intravascular pseudo-hyphae and yeast-like organisms. Oval yeast structures with 4 to 6 μm in diameter and 5 to 8 μm thick paralleled-wall pseudo-hyphae were observed in PAS or GMS stained sections. PCR with DNA template extracted from paraffin embedded tissues amplified the D1/D2 domains of the large subunit rRNA gene, which was sequenced and found to be identical to sequences of a new species, isolated from rotting wood in Brazil, of the genus Spencermartinsiella, which its closest relative is Spencermartinsiella cellulosicola. Um crocodilo macho adulto (Crocodylus niloticus) foi diagnosticado com infecção fúngica sustêmica. Histologicamente, havia extensas áreas de necrose no pulmão, que estavam associadas com infiltrado inflamatório linfo-plasmo-histiocitário, com numerosas células gigantes multinucleadas e miríade de pseudo-hifas e organismos leveduriformes intralesionais, dentro de favéolas distendidas. Focos necróticos também foram observados na mucosa do trato digestório, traquéia, túnica íntima de artérias, fígado e coração, com acentuado infiltrado inflamatório linfo-histiocitário, com grande número de macrófagos epitelioides e células gigantes e hifas e organismos leveduriformes intralesionais e intravasculares. Cortes corados por PAS e GMS evidenciaram estruturas leveduriformes ovais com 4 a 6 μm de diâmetro e pseudo-hifas de paredes espessas e paralelas com 5 a 8 μm. PCR realizado com DNA extraído de material parafinizado amplificou os domínios D1/D2 da subunidade maior do gene rRNA, cuja sequencia foi idêntica a sequências de uma nova espécie, isolada no Brasil de madeira em decomposição, do gênero Spencermartinsiella, cuja espécie mais próxima é Spencermartinsiella cellulosicola

Purification of a lectin with antibacterial activity from Bothrops leucurus snake venom

A novel lectin was isolated from Bothrops leucurus snake venom using a combination of affinity and gel filtration chromatographies. the lectin (BIL) agglutinated glutaraldehyde-treated rabbit and human erythrocytes with preference for rabbit erythrocytes. Galactose, raffinose, lactose, fetal bovine serum and casein inhibited lectin-induced rabbit erythrocyte agglutination. BIL, with a molecular mass of 30 kDa and composed of two subunits of 15 kDa, showed dependence on calcium. BIL is an acidic protein with highest activity over the pH range of 4.0-7.0 and stable under heating to 70 degrees C. Fluorescence emission spectra showed tryptophan residues partially buried within the lectin structure. the percentages of secondary structure revealed by circular dichroism were 1% alpha-helix, 44% beta-sheet, 24% beta-turn and 31% unordered. BIL showed effective antibacterial activity against Gram-positive bacteria Staphylococcus aureus, Enterococcus faecalis and Bacillus subtilis with minimal inhibitory concentrations of 31.25, 62.25 and 125 mu g/mL, respectively. in conclusion, B. leucurus snake venom contains a galactoside-binding lectin with antibacterial activity. (C) 2011 Elsevier Inc. All rights reserved.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Fed Pernambuco, Dept Bioquim, BR-50670420 Recife, PE, BrazilUniv Fed Bahia, Dept Zool, BR-40170210 Salvador, BA, BrazilUniversidade Federal de São Paulo, Dept Bioquim, BR-04044020 São Paulo, BrazilUniv Fed Pernambuco, Dept Zool, BR-50670420 Recife, PE, BrazilUniv Estadual Oeste Parana, Ctr Engn & Ciencias Exatas, BR-85903000 Toledo, Parana, BrazilUniversidade Federal de São Paulo, Dept Bioquim, BR-04044020 São Paulo, BrazilWeb of Scienc