950 resultados para Crates, of Thebes, 4th cent. B.C.


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Text in Greek, notes in Latin.

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Mode of access: Internet.

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Series title also at head of t.-p.

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von F. O. Trechitius, Schulmeister zu Werda

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Background: Recent epidemiological studies have shown that individuals with periodontitis have a significantly increased risk of developing coronary heart disease. In addition to conventional risk factors, chronic infection and subsequent production of systemic inflammatory markers may be associated with this increased risk. Objectives: The aim of the present study was to determine whether the presence of chronic periodontitis and subsequent periodontal treatment could influence the serum levels of C-reactive protein (CRP), interleukin-6 and tumor necrosis factor-alpha (TNF-alpha) in a Japanese population. Methods: Sera were obtained from 24 patients with moderate to advanced periodontitis at the baseline examination and at reassessment after completion of treatment. As a control, sera were also obtained from 21 subjects without periodontitis. High-sensitivity CRP (hs-CRP) was measured using nephelometry with a latex particle-enhanced immunoassay and interleukin-6 and TNF-alpha were determined by sensitive enzyme-linked immunosorbent assay. Results: The levels of hs-CRP and interleukin-6 in the sera of this Japanese population seemed to be much lower than those reported in other populations. TNF-alpha on the other hand, demonstrated similar levels between this Japanese and other populations. Periodontal status demonstrated a significant improvement in all patients following treatment. There was a trend toward higher hs-CRP levels in patients at baseline compared with control subjects. Hs-CRP level tended to decrease with improvement of the periodontal condition following treatment and approached that of control subjects, although this decline was not statistically significant. interleukin-6 and TNF-alpha levels did not change following periodontal treatment. Furthermore, there was no difference in the serum levels of these inflammatory cytokines between patients either at baseline or at reassessment and control subjects. Conclusions: In this pilot study, we were unable to show that periodontal disease significantly affects the serum levels of systemic inflammatory markers. However, this does not necessarily mean that periodontitis does not contribute to the total burden of inflammation as there was a tendency for hs-CRP to decrease following successful periodontal treatment. Large-scale studies are clearly needed to determine the impact of periodontal disease on systemic inflammation.

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This article considers the attempts of academic psychologists and critical occultists in Germany during the late nineteenth and early twentieth centuries to construct a psychology of occult belief. While they claimed that the purpose of this new subdiscipline was to help evaluate the work of occult researchers, the emergence of a psychology of occult belief in Germany served primarily to pathologize parapsychology and its practitioners. Not to be outdone, however, parapsychologists argued that their adversaries suffered from a morbid inability to accept the reality of the paranormal. Unable to resolve through experimental means the dispute over who should be allowed to mold the public's understanding of the occult, both sides resorted to defaming their opponent. (c) 2006 Wiley Periodicals, Inc.

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Neste estudo, que tem por base Gênesis 14,18-20, se discute a respeito de Melquisedec, o rei de Salém e seu deus el elyon , de quem é sacerdote (v.18). O texto é pós-exílico, sendo uma inserção ao capítulo 14, e reflete a história de Judá no período de sua restauração (séculos 6º a 4º a.C.), numa época em que o sacerdócio de Jerusalém assumiu gradativamente um poder sem precedentes em sua história, de maneira que o sumo-sacerdote acabou por se tornar uma autoridade civil. Melquisedec, que recebe o dízimo de Abrão, é uma imagem que evoca o poder do culto hierosolimitano na sociedade judaíta e seu alegado direito aos dízimos e ofertas oriundos do povo. Mas Melquisedec, usado num texto tardio, pertence a tradições anteriores ao exílio de Judá, segundo as quais o rei também desempenhava papel sacerdotal, como chefe religioso e intendente de Iahweh (Salmo 110). Essa dupla função foi um meio de legitimar as estruturas de poder caracterizadas por uma organização sóciopolítico- econômica que, em aspectos gerais, se ajusta ao conceito de modo de produção tributário. Assim, todo um discurso construído sobre a pessoa do rei e sobre outros aspectos ideológicos, tais quais a teologia de Sião (Salém), serviam de suporte para a manutenção do status quo. E em tal discurso coube o uso do universo simbólico da religião. Neste estudo, aventa-se a hipótese de que el elyon seja um nome composto, no qual subjazem el, que corresponde ao deus supremo do panteão cananeu (o ugarítico ilu), que tem como um de seus atributos o fato de haver gerado céus e terra (o que situa a tradição em concepções cosmogônicas médio-orientais arcaicas); e elyon, o qual parece esconder as características de outro deus, Ba al (Salmo 18, 7-17). Nota-se dessa maneira que o nome do deus de Melquisedec é a combinação sincrética de características de duas grandes divindades do panteão cananeu

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In April 2007, the Biochemical Society held a meeting to compare and contrast ligand binding and activation of Family A and B GPCRs (G-protein-coupled receptors). Being the largest class, Family A GPCRs usually receive the most attention, although a previous Biochemical Society meeting has focused on Family B GPCRs. The aim of the present meeting was to bring researchers of both families together in order to identify commonalities between the two. The present article introduces the proceedings of the meeting, briefly commenting on the focus of each of the following articles. ©The Authors.

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During inflammation, many cell types release reactive oxygen species (ROS) via the respiratory burst. These ROS are potent oxidants of LDL and its major protein, apolipoprotein B. Whilst native LDL is taken up by endothelial cells via a feedback controlled receptor-regulated process, oxidative modification of LDL renders it a ligand for many scavenger receptors. Scavenger receptors include CD-36, LOX-1 and the prototypic macrophage SR A I/II, all of which are variably expressed. Uncontrolled uptake of oxidised LDL is implicated in the pathogenesis of atherosclerosis. In addition, oxidised LDL increases CCR2 protein and mRNA expression on monocytes, and thus may contribute to monocyte retention and perpetuation in inflammatory, unstable atherosclerotic lesions. However, little data are available on the effects of specific minor modifications to apolipoprotein B. In order to identify the sequence specificity and nature of oxidative modifications which confer altered properties on LDL, we have investigated the effects of modified peptides (which correspond to the putative LDLR binding domain) on LDL uptake by HUVECs and U937 monocytes.