710 research outputs found
The Gospel of the Savior: an analysis of P.Oxy.840 and its place in the Gospel traditions of early Christianity
In December 1905 an archaeological dig at Oxyrhynchus, Egypt uncovered a
small fragment of a non-canonical story of Jesus which recorded a conversation
between Jesus and his disciples and a confrontation with a Pharisaic chief priest in
the temple. The initial discovery of this fragment, designated P.Oxy. 840, sparked a
debate concerning the date of the fragment, the origins of the story contained
therein, and the historicity of its references to first-century Judaism. After nearly
100 years, the fragment has received no substantial scholarly investment, leaving
many of these questions unresolved, and leaving many other important issues
unexplored. Thus, this study will offer the first full-scale evaluation of this text—
from palaeographical, historical, and exegetical perspectives—in hopes of
discovering its rightful place in the scope of early gospel traditions.Chapter one examines the codicology and palaeography of P.Oxy. 840, with
special attention to its date, punctuation, scribal features, and possible function
within early Christian communities. It is determined that P.Oxy. 840 is best
understood as a miniature codex, not an amulet, and is plausibly dated 300-350 A.D.Chapter two offers a new reconstruction of the Greek text, along with a new
English translation. In addition, there is a running commentary on the Greek text
explaining key reconstructive choices, exegetical decisions, and interpretive
conclusions.usions.
Chapter three provides a thorough re-examination of the historical problems
that have plagued P.Oxy. 840 since its initial discovery. Such problems include the
combination of Pharisee and chief priest, the viewing of the holy vessels in the
tabernacle, bathing in a pool filled with dogs and pigs, and changing into white
garments before entering the temple. Upon closer examination—particularly in light
of new archaeological discoveries in the last century—it seems that P.Oxy. 840 has
substantial and accurate knowledge of first-century temple practices.Chapter four explores the relationship between P.Oxy. 840 and the canonical
gospels. Prior scholarship has only scratched the surface of this issue, with various
suggestions here and there amounting to no more than a few paragraphs. A detailed
textual comparison shows the author ofP.Oxy. 840 demonstrates awareness of (and
is influenced by) five canonical passages: Luke 11:37-52; Matt 23:1-39; John 7:1-
52; John 13:10; and Mark 7:1-23.hn 13:10; and Mark 7:1-23.
Chapter five attempts to reconstruct the probable community and religious
milieu that would have given rise to P.Oxy. 840. The theological interests and
polemical thrust of our fragment suggest that it arose from within Jewish-Christian
circles engaged in dispute over ritual purity practices. One possibility is that P.Oxy.
840 arose from within the Jewish-Christian sect called the Nazarenes. Such a
scenario would plausibly place the production of P.Oxy. 840 in Syria between 125
and 150 A.D
Edge effects at an induced forest-grassland boundary: forest birds in the Ongoye Forest Reserve, KwaZulu-Natal
Bird species diversity and guild composition between the edge (5-10 m from the margin) of primary forest abutting grassland and the deep interior (> 500 m from the margin) in the Dngoye Forest Reserve were compared. Edge and interior sites were chosen that were homogeneous with respect to habitat physiognomy i.e. influences of habitat structure and complexity were insignificant. There were no statistical differences in bird species diverstty between the forest edge and interior. However, there was significantly greater species turnover at the edge. The difference in bird species composition between the forest edge and interior was due to various edge-effects: removal of dead wood for firewood, soil compaction by cattle, and generally greater levels of disturbance. We question the wisdom of the generally applied edge-effect principle in the conservation of forest biodiversity. We suggest that the principle be applied only once there has been critical appraisal of the extent, nature, and effect of an edge and a clear conservation objective with regard to forest birds.S. Afr. J. Zool. 1997,32(3
Mutation at the folate receptor 4 locus modulates gene expression profiles in the mouse uterus in response to periconceptional folate supplementation
AbstractPericonceptional supplementation of folic acid to the diet of women is considered a great success for a public health intervention. Higher folate status, either by supplementation, or via the mandatory fortification of grain products in the United States, has led to significant reduction in the incidence of neural tube defects. Besides birth defects, folate deficiency has been linked to a variety of morbidities, most notably to increased risk for cancer. However, recent evidence suggests that excess folate may be detrimental — for birth defect incidence or in the progression of cancer. How folate mediates beneficial or detrimental effects is not well understood. It is also unknown what molecular responses are elicited in women taking folate supplements, and thus experience a bolus of folate on top of the status achieved by fortification. To characterize the response to a periconceptional regimen of supplementation with folinic acid, we performed gene expression profiling experiments on uterus tissue of pregnant mice with either wildtype alleles or targeted disruption at the folate receptor 4 locus. We observed that, depending on the genetic background, folinic acid supplementation affects expression of genes that contribute to lipid metabolism, protein synthesis, mitochondrial function, cell cycle, and cell activation. The extent of the response is strongly modulated by the genetic background. Finally, we provide evidence that folinic acid supplementation in the mutant paradigm affects histone methylation status, a potential mechanism of gene regulation in this model
Maternal Diet Modulates Placenta Growth and Gene Expression in a Mouse Model of Diabetic Pregnancy
Unfavorable maternal diet during pregnancy can predispose the offspring to diseases later in life, such as hypertension, metabolic syndrome, and obesity. However, the molecular basis for this phenomenon of “developmental programming” is poorly understood. We have recently shown that a diet nutritionally optimized for pregnancy can nevertheless be harmful in the context of diabetic pregnancy in the mouse, associated with a high incidence of neural tube defects and intrauterine growth restriction. We hypothesized that placental abnormalities may contribute to impaired fetal growth in these pregnancies, and therefore investigated the role of maternal diet in the placenta. LabDiet 5015 diet was associated with reduced placental growth, commencing at midgestation, when compared to pregnancies in which the diabetic dam was fed LabDiet 5001 maintenance chow. Furthermore, by quantitative RT-PCR we identify 34 genes whose expression in placenta at midgestation is modulated by diet, diabetes, or both, establishing biomarkers for gene-environment interactions in the placenta. These results implicate maternal diet as an important factor in pregnancy complications and suggest that the early phases of placenta development could be a critical time window for developmental origins of adult disease
Novel mode of defective neural tube closure in the Non-Obese Diabetic (NOD) mouse strain
Failure to close the neural tube results in birth defects, with severity ranging from spina bifida to lethal anencephaly. Few genetic risk factors for neural tube defects are known in humans, highlighting the critical role of environmental risk factors, such as maternal diabetes. Yet, it is not well understood how altered maternal metabolism interferes with embryonic development, and with neurulation in particular. We present evidence from two independent mouse models of diabetic pregnancy that identifies impaired migration of nascent mesodermal cells in the primitive streak as the morphogenetic basis underlying the pathogenesis of neural tube defects. We conclude that perturbed gastrulation not only explains the neurulation defects, but also provides a unifying etiology for the broad spectrum of congenital malformations in diabetic pregnancies
Antisense Suppression of the Small Chloroplast Protein CP12 in Tobacco Alters Carbon Partitioning and Severely Restricts Growth
Abstract
The thioredoxin-regulated chloroplast protein CP12 forms a multienzyme complex with the Calvin-Benson cycle enzymes phosphoribulokinase (PRK) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). PRK and GAPDH are inactivated when present in this complex, a process shown in vitro to be dependent upon oxidized CP12. The importance of CP12 in vivo in higher plants, however, has not been investigated. Here, antisense suppression of CP12 in tobacco (Nicotiana tabacum) was observed to impact on NAD-induced PRK and GAPDH complex formation but had little effect on enzyme activity. Additionally, only minor changes in photosynthetic carbon fixation were observed. Despite this, antisense plants displayed changes in growth rates and morphology, including dwarfism and reduced apical dominance. The hypothesis that CP12 is essential to separate oxidative pentose phosphate pathway activity from Calvin-Benson cycle activity, as proposed in cyanobacteria, was tested. No evidence was found to support this role in tobacco. Evidence was seen, however, for a restriction to malate valve capacity, with decreases in NADP-malate dehydrogenase activity (but not protein levels) and pyridine nucleotide content. Antisense repression of CP12 also led to significant changes in carbon partitioning, with increased carbon allocation to the cell wall and the organic acids malate and fumarate and decreased allocation to starch and soluble carbohydrates. Severe decreases were also seen in 2-oxoglutarate content, a key indicator of cellular carbon sufficiency. The data presented here indicate that in tobacco, CP12 has a role in redox-mediated regulation of carbon partitioning from the chloroplast and provides strong in vivo evidence that CP12 is required for normal growth and development in plants.</jats:p
Plasma acetate, gluconate and interleukin-6 profiles during and after cardiopulmonary bypass: a comparison of Plasma-Lyte 148 with a bicarbonate-balanced solution
Introduction: As even small concentrations of acetate in the plasma result in pro-inflammatory and cardiotoxic effects, it has been removed from renal replacement fluids. However, Plasma-Lyte 148 (Plasma-Lyte), an electrolyte replacement solution containing acetate plus gluconate is a common circuit prime for cardio-pulmonary bypass (CPB). No published data exist on the peak plasma acetate and gluconate concentrations resulting from the use of Plasma-Lyte 148 during CPB
Comparing visual skills in sedentary and active work environments
A comparative study was conducted between training recruits (n = 138) and undergraduate university (n = 169) students to assess whether physical activity enhances visual skills. The results indicated that
recruits, who lead an active lifestyle, possess superior skills in eye-hand coordination and reaction time. However, students possess superior skills in tracking and sequencing.This paper was initially delivered at the Annual Congress of the Biological
Sciences Division of the South African Academy for Science and Art, ARC-Plant Protection Research Institute, Roodeplaat, Pretoria, South
Africa on 01 October 2010.http://www.satnt.ac.zaam2014ay201
Antibiotic dosing in the 'at risk' critically ill patient: Linking pathophysiology with pharmacokinetics/pharmacodynamics in sepsis and trauma patients
Background: Critical illness, mediated by trauma or sepsis, can lead to physiological changes that alter the pharmacokinetics of antibiotics and may result in sub-therapeutic concentrations at the sites of infection. The first aim of this project is to identify the clinical characteristics of critically ill patients with significant trauma that have been recently admitted to ICU that may predict the dosing requirements for the antibiotic, cefazolin. The second aim of this is to identify the clinical characteristics of critically ill patients with sepsis that may predict the dosing requirements for the combination antibiotic, piperacillin-tazobactam
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