gebhart/patrepeval huggingface dataset:
Promoting Lifelong Readers across the Curriculum (1993)

According to data from the National Assessment of Educational Progress in Reading our nations' students tend to be infrequent readers. At all three ages assessed (9, 13, 17), approximately one-fifth of the students reported reading for pleasure only yearly or never. Fewer than half the students reported having engaged in the following activities including telling a friend about a book, taking a book out of the library, spending their own money on books, and reading more than one book by a favorite author (Mullis, 1992).
Highly selective isolation of unknown mutations in diverse DNA fragments: toward new multiplex screening in cancer. (2000)

Cancer research would greatly benefit from technologies that allow simultaneous screening of several unknown gene mutations. Lack of such methods currently hampers the large-scale detection of genetic alterations in complex DNA samples. We present a novel mismatch-capture methodology for the highly efficient isolation and amplification of mutation-containing DNA from diverse nucleic acid fragments of unknown sequence. To demonstrate the potential of this method, heteroduplexes with a single A/G mismatch are formed via cross-hybridization of mutant (T-->G) and wild-type DNA-fragment populations. Aldehydes are uniquely introduced at the position of mismatched adenines via the Escherichia coli glycosylase, MutY. Subsequent treatment with a biotinylated hydroxylamine results in highly specific and covalent biotinylation of the site of mismatch. For PCR amplification, synthetic linkers are then ligated to the DNA fragments. Biotinylated DNA is then isolated and PCR amplified. Mutation-containing DNA fragments can subsequently be sequenced to identify type and position of mutation. This method correctly detects a single T-->G transversion introduced into a 7-kb plasmid containing full-length cDNA from the p53 gene. In the presence of a high excess wild-type DNA (1:1000 mutant:normal plasmids) or in the presence of diverse DNA fragment sizes, the DNA fragments containing the mutation are readily detectable and can be isolated and amplified. The present Aldehyde-Linker-Based Ultrasensitive Mismatch Scanning has a current limit of detection of one base substitution in 7 Mb of DNA and increases the limit for unknown mutation scanning by two to three orders of magnitude. Homozygous and heterozygous p53 regions (G-->T, exon 4) from genomic DNA are also examined, and correct identification of mutations is demonstrated. This method should allow large-scale detection of genetic alterations in cancer samples without any assumption as to the genes of interest.
Developing the Frith-Happé animations: A quick and objective test of Theory of Mind for adults with autism (2011)

It is now widely accepted that individuals with autism have a Theory of Mind (ToM) or mentalizing deficit. This has traditionally been assessed with false-belief tasks and, more recently, with silent geometric animations, an on-line ToM task. In adults with milder forms of autism standard false-belief tests, originally devised for children, often prove insensitive, while the Frith-Happé animations have had rather better success at capturing the on-line ToM deficit in this population. However, analysis of participants' verbal descriptions of these animations, which span scenarios from "Random" to "Goal-Directed" and "ToM," is time consuming and subjective. In this study, we developed and established the feasibility of an objective method of response through a series of multiple-choice questions. Sixteen adults with autism and 15 typically developing adults took part, matched for age and intelligence. The adults with autism were less accurate as a group at categorizing the Frith-Happé animations by the presence or absence of mental and physical interactions. Furthermore, they were less able to select the correct emotions that are typically attributed to the triangles in the mental state animations. This new objective method for assessing the understanding of the animations succeeded in being as sensitive as the original subjective method in detecting the mentalizing difficulties in autism, as well as being quicker and easier to administer and analyze.
Conversion of thebaine to codeine (1976)

An improved conversion of thebaine to codeine has been developed. Oxymercuration of thebaine with mercuric acetate in refluxing methanol, followed by hydrolysis of the intermediate 7-acetomercurineopinone dimethyl ketal with 3 N acetic acid, or, alternatively, reduction of the organomercury compound with sodium borohydride and mild acid hydrolysis of the resulting neopinone dimethyl ketal, gives neopinone in 95-100% yields. Either acid- or alkali-catalyzed isomerization to codeinone leads to the equilibrium mixture consisting of codeinone-neopinone, 3:1. Complete conversion to codeinone in 85-90% yield results from treatment of neopinone with anhydrous hydrogen chloride or hydrogen bromide in ether-methylene chloride, followed by elimination of hydrogen halide from the intermediate 8-halodihydrocodeinone. The known borohydride reduction of codeinone then gives codeine in 85% overall yield from thebaine.
Intracellular uptake and intracavitary targeting of folate-conjugated liposomes in a mouse lymphoma model with up-regulated folate receptors (2006)

The folate receptor is overexpressed in a broad spectrum of malignant tumors and represents an attractive target for selective delivery of anticancer agents to folate receptor-expressing tumors. This study examines folate-lipid conjugates as a means of enhancing the tumor selectivity of liposome-encapsulated drugs in a mouse lymphoma model. Folate-derivatized polyethylene glycol (PEG3350)-distearoyl-phosphatidylethanolamine was post-loaded at various concentrations into the following preparations: radiolabeled PEGylated liposomes, PEGylated liposomes labeled in the aqueous compartment with dextran fluorescein, and PEGylated liposomal doxorubicin (PLD, Doxil). We incubated folate-targeted radiolabeled or fluorescent liposomes with mouse J6456 lymphoma cells up-regulated for their folate receptors (J6456-FR) to determine the optimal ligand concentration required in the lipid bilayer for liposomal cell association, and to examine whether folate-targeted liposomes are internalized by J6456-FR cells in suspension. Liposomal association with cells was quantified based on radioactivity and fluorescence-activated cell sorting analysis, and internalization was assessed by confocal fluorescence microscopy. We found an optimal ligand molar concentration of approximately 0.5% using our ligand. A substantial lipid dose-dependent increase in cell-associated fluorescence was found in folate-targeted liposomes compared with nontargeted liposomes. Confocal depth scanning showed that a substantial amount of the folate-targeted liposomes are internalized by J6456-FR cells. Binding and uptake of folate-targeted PLD by J6456-FR cells were also observed in vivo after i.p. injection of folate-targeted PLD in mice bearing ascitic J6456-FR tumors. The drug levels in ascitic tumor cells were increased by 17-fold, whereas those in plasma were decreased by 14-fold when folate-targeted PLD were compared with nontargeted PLD in the i.p. model. Folate-targeted liposomes represent an attractive approach for the intracellular delivery of drugs to folate receptor-expressing lymphoma cells and seem to be a promising tool for in vivo intracavitary drug targeting.
Coexpression of Formylglycine-Generating Enzyme Is Essential for Synthesis and Secretion of Functional Arylsulfatase A in a Mouse Model of Metachromatic Leukodystrophy (2005)

Metachromatic leukodystrophy (MLD) is a lysosomal storage disorder involving inherited deficiency of arylsulfatase A (ASA). The disease is characterized by progressive demyelination and widespread deposition of sulfatide in both the central and peripheral nervous systems. Direct injection of viral vector through the blood-brain barrier is a possible gene therapy approach to MLD. However, to treat all brain cells, it is essential to secrete a sufficient amount of functional ASA from limited numbers of transduced cells. In the present study, we tested the utility of formylglycine-generating enzyme (FGE) for overexpression of functional ASA. FGE is a posttranslational modifying enzyme essential for activating multiple forms of sulfatases including ASA. COS-7 cells were transfected with ASA- and FGE-expressing plasmids. ASA activity was increased up to 20-fold in cell lysates and 70-fold in conditioned medium by coexpression of FGE. Intravenous injection of the expression plasmids into MLD knockout mice by a hydrodynamics-based procedure resulted in a significant synergistic increase in ASA activity both in liver and serum. Blot hybridization analysis of FGE mRNA demonstrated that the expression of endogenous FGE was particularly low in human brain. Our results suggest, on the basis of cross-correction of ASA deficiency, that coexpression of FGE is essential for gene therapy of MLD.
Inhibitory effect of okadaic acid derivatives on protein phosphatases. A study on structure-affinity relationship (1992)

The effect of structural modifications of okadaic acid (OA), a polyether C38 fatty acid, was studied on its inhibitory activity toward type 1 and type 2A protein phosphatases (PP1 and PP2A) by using OA derivatives obtained either by isolation from natural sources or by chemical processes. The dissociation constant (Ki) for the interaction of OA with PP2A was estimated to be 30 (26-33) nM [median (95% confidence limits)]. The OA derivatives used and their affinity for PP2A, expressed as Ki (in brackets) were as follows: 35-methyl-OA (DTX1) [19 (12-25) pM], OA-9,10-episulphide (acanthifolicin) [47 (25-60) pM], 7-deoxy-OA [69 (31-138) pM], 14,15-dihydro-OA [315 (275-360) pM], 2-deoxy-OA [899 (763-1044) pM], 7-O-palmitoyl-OA [greater than 100 nM], 7-O-palmitoyl-DTX1 [greater than 100 nM], methyl okadate [much greater than 100 nM], 2-oxo-decarboxy-OA [much greater than 100 nM] and the C-15-C-38 fragment of OA [much greater than 100 nM]. The sequence of the affinity of these derivatives for PP1 was essentially the same as that observed with PP2A, although the absolute values of Ki were very different for the enzymes. The inhibitory effect of OA on PP2A was reversed by applying a murine monoclonal antibody against OA, which recognizes modifications of the 7-hydroxyl group of the OA molecule. It has been shown by n.m.r. spectroscopy and X-ray analysis that one end (C-1-C-24) of the OA molecule assumes a circular conformation. The present results suggest the importance of the conformation for the inhibitory action of OA on the protein phosphatases. The ratios of the Ki values for PP1 to that for PP2A, which were within the range 10(3)-10(4), tended to be smaller for the derivatives with lower affinity, indicating that the structural changes in OA impaired the affinity for PP2A more strongly than that for PP1.
RNA binding proteins in the control of autoimmune diseases (2019)

Autoimmune disease is induced by the breakdown of immune tolerance to self-antigens. This is brought about by an imbalance between the activation and the repression of immune responses. Dysregulation of the immune response is driven by the excess of proinflammatory cytokines such as IL-6 and TNF, which play a central role in the pathogenesis of a set of autoimmune diseases. The expression of proinflammatory mediator genes is tightly controlled by post-transcriptional regulation, which is mediated by a set of immune-related RNA binding proteins, such as tristetraprolin, Roquin, and Regnase-1. These proteins coordinately control the stability of proinflammatory mRNAs to regulate aberrant immune reactions. In this review, we discuss the roles of RNA binding proteins which are associated with the immune regulation and autoimmune pathogenesis.
Novel benzophenothiazinium photosensitizers: preliminary in-vivo results (1990)

The photochemotherapeutic properties of several novel benzophenothiazines were evaluated zn-vzvo in three distinct tumor types consisting of a murine sarcoma, human carcinoma, and a rat glioma. Subcutaneous or intravenous administration of dyes to tumor bearing animals coupled with irradiation of the tumor area with 640 nm light resulted in substantial tumor necrosis 24h post photodynamic therapy as determined by histological evaluation. Significantly, there was minimal concurrent damage to the surrounding normal tissue. These results offer further evidence for the potential usefulness of benzophenothiazines in the photodynamic therapy of neoplasms.
[Quantitative evaluation for diagnostic efficacy of computed tomography and magnetic resonance imaging in patients with lumbar disc herniation]. (2011)

After a meta-analysis of the diagnostic value of CT and MRI for the lumbar intervertebral disc herniation, MRI is more accurate than CT in the diagnosis of lumbar intervertebral disc herniation.
High Avidity Cytotoxic T Lymphocytes Can Be Selected into the Memory Pool but They Are Exquisitely Sensitive to Functional Impairment (2012)

High avidity cytotoxic T lymphocytes (CTL) are important in viral clearance and anti-tumor immunity, however, mechanisms for their optimal generation and maintenance in vivo remain unclear. Immunizing mice with an antibody-DNA vaccine encoding a single CTL epitope, induces a 100 fold higher avidity response than peptide vaccination with the identical epitope. The high avidity response is retained into memory and can be efficiently reactivated with an antibody-DNA boost. In contrast, reactivation of high avidity CTL with peptide, stimulated responses with a significant drop in avidity, suggesting loss or conversion of the high avidity CTL to lower avidity. Similarly, high avidity T cells maintained ex vivo were exquisitely sensitive to signaling with low doses of peptide (1 ng/ml) giving optimal TCR stimulation and resulting in retained avidity, proliferation and ability to kill specific targets. In contrast, high avidity T cells maintained ex vivo with supraoptimal TCR stimulation (10 µg/ml peptide) resulted in reduced avidity and failure to kill tumor cells. They also failed to proliferate, showed a significant increase in apoptosis and expressed high levels of the exhaustion marker programmed death-1 (PD-1) and low levels of the lymphocyte-activation gene 3 (LAG-3). This suggests high avidity T cells are recruited to the memory pool but can be lost by supraoptimal stimulation in vitro and in vivo. This is characterized by loss of function and an increase in cell death. The remaining CTL, exhibit low functional avidity that is reflected in reduced anti-tumor activity. This could contribute to failure of the immune system to control the growth of tumors and has implications for vaccination strategies and adoptive transfer of T cells.
Doxorubicin and β-Lapachone Release and Interaction with Micellar Core Materials: Experiment and Modeling (2007)

Polymer micelles with two different core-forming blocks, poly(d,l -lactide) (PLA) and poly(epsilon-caprolactone) (PCL), but the same coronal material, poly(ethylene glycol) (PEG), were investigated in this study as nanoscopic drug carriers. The release of two different drugs, doxorubicin (DOX) and beta-lapachone (beta-lap), from PEG(5k)-b-PCL(5k) and PEG(5k)-b-PLA(5k) micelles was studied at pH 5.0 and 7.4. Mathematical solutions of both Higuchi's model and Fickian diffusion equations were utilized to elucidate the differences between the micelle core materials for the two drugs. The neutral and smaller of the two drugs tested, beta-lap, demonstrated faster, pH-independent release, suggesting that no substantial changes occurred in either micelle core at lower pH. In contrast, the release rate of DOX was found to noticeably increase at lower pH with a larger cumulative amount of drug released. Different core materials were shown to have considerable influence on the release kinetics of both drugs: in both cases, the more hydrophobic PCL core showed slower drug release rates compared with the less hydrophobic PLA core.
Occurrence of Lacto Series Gangliosides 3′-isoLM1 and 3′,6′-isoLD1 in Human Gliomasin vitroandin vivo (1991)

Monoclonal antibodies (MAb; DMAb, monoclonal antibodies derived at Duke Medical Center) directed against the oncofetally expressed lactotetraosyl gangliosides 3'-isoLM1 (IV3NeuAc-LcOse4Cer) and 3',6'-isoLD1 (IV3NeuAc,III6NeuAc-LcOse4Cer) were produced and their reactivity spectra compared to that of the alpha-3'-isoLM1 MAb SL-50. The IgM MAb SL-50 defines the epitope NeuAc (or NeuGc)alpha 2-3Gal beta 1-3GlcNAc, the terminal sequence of both gangliosides. SL-50 requires an unsubstituted GlcNAc residue; IgM DMAb-14 will accept the alpha 2-6 linked sialic acid to GlcNAc found in 3',6'-isoLD1. Immunohistochemical localization of 3'-isoLM1 was performed on 31 biopsy specimens of human gliomas; 15 (48%) expressed 3'-isoLM1 as defined by binding of MAb SL-50. Staining of small anaplastic cells, giant cells, and the glial component of gliosarcomas was observed. Neoplastic gemistocytes, when present, showed particularly intense staining. The 3'-isoLM1 and 3',6'-isoLD1 distribution in cultured cell lines and derived xenografts of primary tumors of the human central nervous system and of embryonal or neuroectodermal tumor derivation was determined. Six of 29 cell lines expressed 3'-isoLM1: 2/16 gliomas, 3/3 teratomas, 1/1 pancreatic adenocarcinoma. No cell line expressed detectable 3',6'-isoLD1 by immunostain analysis of ganglioside extracts. The 3'-iso-LM1-positive cell lines expressed it in xenograft form; in five xenografts, the corresponding cell lines of which were 3'-isoLM1-negative, it was a proportion of the monosialoganglioside fraction. 3',6'-isoLD1 was detected in two xenografts, D-54 MG (glioma) and PA-1 (teratoma). The demonstration of 3'-isoLM1 in gliomas in in vivo forms and the relatively infrequent expression by derived cultured cells suggest that ganglioside expression is modified by environmental forces. Expression of 3'-isoLM1 and 3',6'-isoLD1 in fetal and neonatal brain, in intense reactive astrocytosis such as polyunsaturated fatty acid lipidosis, and in primary neoplasms of the central nervous system suggests their role in cell-cell attachment during development, migration, and neoplastic transformation.
Acoustic properties of ultrasound contrast agents (1993)

textabstractSafety of contrast agents is reported in the years after. Both the intracoronary use of
sonicated Renografin as well as intravenous use of commercial product as
Albunex and Lechovist has been investigated. Thereafter more pathophysiologic
studies were performed. Ten Cate described the possibilities to determine the
stenosis of the left anterior descending coronary artery by the contrast outwash in
the interventricular septum and Cornel who incidentally reported the Thebesian
vein outflow in humans visualised by echo contrast. Cheiriff and his group described
myocardial perfusion studies to determine coronary flow reserve before and after
Percutaneous Transluminal coronary angioplasty (PTCA). Coronary collateral
perfusion after myocardial infarction or PTCA can be assessed. Also, successful
thrombolysis, resulting in a patent coronary artery, is often not accompanied by a
return of normal perfusion or wall motion
The role of adhesion molecules, αvβ3, αvβ5 and their ligands in the tumor cell and endothelial cell adhesion (2007)

Tumor metastasis is a complex process involving the interaction between tumor cells and endothelial cells in which some adhesion molecules play an important role. It was our aim to investigate the role of the adhesion molecules, alpha v beta 3 and alpha v beta 5 and their ligands, developmental endothelial locus-1 (Del-1) and L1, in tumor cell adhesion to endothelial cells in vitro. In this study, the expression and regulation of alpha v beta 3, alpha v beta 5 and intercellular adhesion molecule -1 on liver sinusoidal endothelial cells and liver cancer endothelial cells (T3A) were analyzed by real-time PCR and fluorescent-activated cell sorter. The expression and regulation of the integrin ligands, Del-1 and L1, in six tumor cell lines were analyzed by real-time PCR and western blot. We found the expressions of alpha v beta 3 and alpha v beta 5 were higher on T3A than that on liver sinusoidal endothelial cells, whereas expression of intercellular adhesion molecule-1 was lower on T3A than that on liver sinusoidal endothelial cells. After 24 h hypoxia, the expressions of alpha v beta 3 and alpha v beta 5 were upregulated on T3A and liver sinusoidal endothelial cells; the expression of intercellular adhesion molecule-1 was increased on liver sinusoidal endothelial cells, but remained unchanged on T3A. Del-1 and L1 expression levels were obviously diverse in various tumor cell lines and differentially modulated after 12 h hypoxia. The adhesion of tumor cells with Del-1 and L1 expression was higher in T3A than that in liver sinusoidal endothelial cells, and was significantly increased under hypoxic conditions. Interestingly, the tumor cell adherence could be inhibited by antibodies against alpha v beta 5 and alpha v beta 5, but not by an antibody against intercellular adhesion molecule-1. The adhesion of tumor cells without Del-1 and L1 expression was also higher on T3A than that on liver sinusoidal endothelial cells, but the adhesion could not be inhibited by antibodies against alpha v beta 5, alpha v beta 5 or intercellular adhesion molecule-1, suggesting that other receptors are involved. In conclusion, alpha v beta 5, alpha v beta 5 and their ligands Del-1 and L1 play an important role in the process of tumor cells moving from the original place.
Caching and writeback policies in parallel file systems (2002)

Improvements in the processing speed of multiprocessors are outpacing improvements in the speed of disk hardware. Parallel disk I/O subsystems have been proposed as one way to close the gap between processor and disk speeds. Such parallel disk systems require parallel file system software to avoid performance-limiting bottlenecks. The authors discuss cache management techniques that can be used in a parallel file system implementation. The authors examine several writeback policies, and give results of experiments that test their performance.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Microresonator-Based Optical Frequency Combs (2011)

The series of precisely spaced, sharp spectral lines that form an optical frequency comb is enabling unprecedented measurement capabilities and new applications in a wide range of topics that include precision spectroscopy, atomic clocks, ultracold gases, and molecular fingerprinting. A new optical frequency comb generation principle has emerged that uses parametric frequency conversion in high resonance quality factor (Q) microresonators. This approach provides access to high repetition rates in the range of 10 to 1000 gigahertz through compact, chip-scale integration, permitting an increased number of comb applications, such as in astronomy, microwave photonics, or telecommunications. We review this emerging area and discuss opportunities that it presents for novel technologies as well as for fundamental science.
Salience Counts: A Domain Analysis of English Color Terms (1995)

Independent models of basic and nonbasic color terms are combined to explore the domain as a whole. We analyze an elicited set of English color terms, ranked by a combined frequency and order of mention salience index. We find that (1) basic color terms emerge intact as a distinctive category, and (2) the remaining types of terms array themselves in an extended pattern of distribution with respect to the domain's broader scheme of lexical, organizational, semantic, and salience dimensions.