gebhart/patrepeval huggingface dataset:
Scanning microphotolysis: A new photobleaching technique based on fast intensity modulation of a scanned laser beam and confocal imaging (1994)

The fluorescence photobleaching method has been widely used to study molecular transport in single living cells and other microsystems while confocal microscopy has opened new avenues to high-resolution, three-dimensional imaging. A new technique, scanning microphotolysis (Scamp), combines the potential of photobleaching, beam scanning and confocal imaging. A confocal scanning laser microscope was equipped with a sufficiently powerful laser and a novel device, the 'Scamper'. This consisted essentially of a filter changer, an acousto-optical modulator (AOM) and a computer. The computer was programmed to activate the AOM during scanning according to a freely defined image mask. As a result, almost any desired pattern could be bleached ('written') into fluorescent samples at high definition and then imaged ('read') at non-bleaching conditions, employing full confocal resolution. Furthermore, molecular transport could be followed by imaging the dissipation of bleach patterns. Experiments with living cells concerning dynamic processes in cytoskeletal filaments and the lateral mobility of membrane lipids suggest a wide range of potential biological applications. Thus, Scamp offers new possibilities for the optical manipulation and analysis of both technical and biological microsystems.
A clinical approach to management of patients with non-steroidal anti-inflammatory gastropathy. (1999)

The treatment of a peptic ulcer occurring in a patient who is taking non-steroidal anti-inflammatory drugs depends on whether or not the patient can readily stop taking the non-steroidal anti-inflammatory drug. If they can, healing is generally rapid, and can be achieved with any effective ulcer-healing agent. When the non-steroidal anti-inflammatory drug cannot be easily stopped, ulcer healing is slower and the treatment of choice is to heal the ulcer with a proton pump inhibitor. The risk of ulceration in patients taking non-steroidal anti-inflammatory drugs can be reduced by two main strategies: the choice of non-steroidal anti-inflammatory drug and its dosage on the one hand, and the use of prophylactic co-therapy on the other. The two are not of course mutually exclusive. It is now clear that not all non-steroidal anti-inflammatory drugs are equally damaging. Several studies have shown that the shorter half life drugs (at least in their recommended dosages) are generally less ulcerogenic. There is clear dose-dependence, so the drugs should be used at the lowest effective dose, and non-steroidal anti-inflammatory drugs should not be given in combination without careful weighing of risks and benefits. Giving either omeprazole or misoprostol concurrently with a non-steroidal anti-inflammatory drug substantially reduces the risk of ulceration. Full dosage histamine H2-receptor antagonists give good protection against non-steroidal anti-inflammatory drug-associated duodenal ulcers, but two large trials with ranitidine showed no protection against gastric ulcer. One study of double dosage famotidine did show a reduction in gastric ulcer incidence as well. Recently, two large randomized trials have compared omeprazole 20 mg daily head-to-head with ranitidine and misoprostol. Overall, the proton pump inhibitor was more effective than the other two for ulcer prevention, although it is interesting that erosions seemed to be prevented better by the prostaglandin. The biggest challenge for clinical judgement is when to use prophylactic co-therapy. Patients for whom this should be especially considered are those who have had a prior ulcer, the elderly, those needing higher non-steroidal anti-inflammatory drug dosage or co-therapy with vascular-protective aspirin, and those whose other medical conditions make them less likely to survive a gastrointestinal haemorrhage or perforation.
Future of interventional cardiology in pediatrics (2003)

A trend toward use of less invasive, nonsurgical approaches to the treatment of congenital heart disease has developed. Although transcatheter valve replacements and ventricular septal defect closures have already been performed in children, many other techniques and devices are being developed for the palliation of children with a single ventricle. Several groups have already established catheter-based procedures for the creation of Fontan communications, and others have performed nonsurgical pulmonary artery banding. Additionally, fetal catheter-based interventions are being developed for the treatment of severe congenital heart disease in utero. Because this trend toward catheter-mediated treatment is certain to continue, care must be taken to regulate safely the introduction of novel techniques and devices into clinical use in pediatric cardiology.
Potential prognostic value of repulsive guidance molecules in breast cancer. (2011)

Aberrant expression of RGMs was indicated in breast cancer. The perturbed expression was associated with disease progression and poor prognosis.
Cosolvent Modulation of the Tubulin-Colchicine GTPase-Activating Conformational Change: Strength of the Enzymic Activity (1994)

The locus of action of cosolvent additives in the activation of the tubulin-colchicine GTPase was investigated. The GDP off rates were slowed down by the cosolvents in a manner that parallels their specific viscosities, indicating that diffusion-controlled release of GDP may be rate-limiting under the conditions of these studies. Yet, the net effect of cosolvents was to increase the overall rate of GTP hydrolysis. Pre-steady-state kinetics of liganded tubulin in the presence of 1%, w/v, poly(ethylene glycol) 6000 (PEG-6000) exhibited a burst of inorganic phosphate release indicating that the cosolvents act at an early step in the process. A similar conclusion was drawn from measurements of the activation energy (Ea) of the reaction, which showed that 3.4 M glycerol decreased the value of Ea to 10.6 kcal mol-1 from 17.3 kcal mol-1 in its absence. The observed difference in apparent binding free energies of the colchicine analogues allo-colchicine (ALLO) and 2-methoxy-5-(2,3,4-trimethoxyphenyl)-2,4,6-cycloheptatrien-1-one (MTC, or des-ring B colchicine), when measured by fluorescence and enzyme activity titrations, identified the presence of a GTPase-activating protein conformational transition subsequent to the physicochemical binding of the ligands. The decrease of the apparent binding constant measured by enzyme activity in dilute buffer relative to that measured by fluorescence [for ALLO, Kb(fluor) = 1.46 x 10(6) M-1; Kb(enz act) = 1.1 x 10(5) M-1] yielded the value of the enzyme-activating conformational transition constant, K3 = 0.08.(ABSTRACT TRUNCATED AT 250 WORDS)
Subjective Well-Being Is Essential to Well-Being (1998)

(1998). Subjective Well-Being Is Essential to Well-Being. Psychological Inquiry: Vol. 9, No. 1, pp. 33-37.
Freeform inkjet printing of cellular structures with bifurcations (2014)

Organ printing offers a great potential for the freeform layer-by-layer fabrication of three-dimensional (3D) living organs using cellular spheroids or bioinks as building blocks. Vascularization is often identified as a main technological barrier for building 3D organs. As such, the fabrication of 3D biological vascular trees is of great importance for the overall feasibility of the envisioned organ printing approach. In this study, vascular-like cellular structures are fabricated using a liquid support-based inkjet printing approach, which utilizes a calcium chloride solution as both a cross-linking agent and support material. This solution enables the freeform printing of spanning and overhang features by providing a buoyant force. A heuristic approach is implemented to compensate for the axially-varying deformation of horizontal tubular structures to achieve a uniform diameter along their axial directions. Vascular-like structures with both horizontal and vertical bifurcations have been successfully printed from sodium alginate only as well as mouse fibroblast-based alginate bioinks. The post-printing fibroblast cell viability of printed cellular tubes was found to be above 90% even after a 24 h incubation, considering the control effect.
Isolation and partial characterization of the Drosophila alcohol dehydrogenase gene. (1980)

The alcohol dehydrogenase (ADH; alcohol: NAD+ oxidoreductase, EC 1.1.1.1) gene (Adh) of Drosophila melanogaster was isolated by utilizing a mutant strain in which the Adh locus is deleted. Adult RNA from wild-type flies was enriched in ADH sequences by gel electrophoresis and then used to prepare labeled cDNA for screening a bacteriophage lambda library of genomic Drosophila DNA. Of the clones that hybridized in the initial screen, one clone was identified that hybridized with labeled cDNA prepared from a wild-type Drosophila strain but did not hybridize with cDNA prepared from an Adh deletion strain. This clone was shown to contain ADH structural gene sequences by three criteria: in situ hybridization, in vitro translation of mRNA selected by hybridization to the cloned DNA, and comparison of the ADH protein sequence with a nucleotide sequence derived from the cloned DNA. Comparison of the restriction site maps from clones of three different wild-type Drosophila strains revealed the presence of a 200-nucleotide sequence in one strain that was absent from the other two strains. The ADH mRNA sequences were located within the cloned DNA by hybridization mapping experiments. Two intervening sequences were identified within Adh by S1 nuclease mapping experiments.
Neonatal Hypoxic-Ischemic Encephalopathy: Multimodality Imaging Findings (2006)

Diffuse hypoxic-ischemic brain injury in the neonate results in neonatal hypoxic-ischemic encephalopathy (HIE). Because of differences in brain maturity at time of insult, severity of hypotension, and duration of insult, there are four distinct patterns of brain injury. Cranial ultra-sonography and computed tomography reveal periventricular leukomalacia, germinal matrix hemorrhage, and hydrocephalus. Magnetic resonance imaging is the most sensitive modality for evaluating the patterns of brain injury. In preterm neonates, mild hypotension causes periventricular injury; severe hypotension results in infarction of the deep gray matter, brainstem, and cerebellum. In term neonates, mild hypotension causes parasagittal cortical and subcortical injury; severe hypotension causes characteristic injury of the lateral thalami, posterior putamina, hippocampi, corticospinal tracts, and sensorimotor cortex. Prompt recognition of these imaging findings can help exclude other causes of encephalopathy, affect prognosis, and facilitate earlier (although mostly supportive) treatment.
DNA Methylation Markers and Early Recurrence in Stage I Lung Cancer (2008)

Methylation of the promoter region of the four genes in patients with stage I NSCLC treated with curative intent by means of surgery is associated with early recurrence.
Expression and prognostic significance of platelet-derived growth factor and its receptors in epithelial ovarian neoplasms. (1993)

The expression of platelet-derived growth factor (PDGF), PDGF-alpha receptor (PDGFR alpha) and PDGF-beta receptor (PDGFR beta) was studied in normal ovaries and ovarian neoplasms by immunohistochemical analysis. PDGF was detected in tumor cells in 33 of 45 malignant tumor samples but in none of 20 benign tumors (P < 0.001) or 11 normal ovaries (P < 0.001). In borderline tumors, 4 of 7 tissues stained positive in tumor cells. PDGFR alpha was detected in tumor cells in 16 of 45 malignant tumors, while no epithelial staining was found in 16 benign tumors (P = 0.002) or in 10 normal ovaries (P = 0.023). In 1 of 7 borderline neoplasms, tumor cells expressed PDGFR alpha. Neither normal epithelium nor tumor cells stained positive with antibodies against PDGFR beta. Patients with ovarian cancer and PDGFR alpha-positive tumor cells demonstrated an overall shorter survival compared to those who had negatively stained tumors (P < 0.005). A similar correlation was found in patients having stage III ovarian cancer (P < 0.01), which further supports an independent role for PDGFR alpha as a prognostic factor. Thus, the concomitant expression of PDGF and PDGFR alpha in tumor cells is related to progression of malignant ovarian tumors, indicating a functional role of PDGF via autocrine growth stimulation.
Effects of Dopamine Prodrugs and Fenoldopam on Glomerular Hyperfiltration in Streptozotocin-Induced Diabetes in Rats (1991)

The effects of dopamine (DA) prodrugs (L-dopa and gludopa) and of a D1-selective agonist (fenoldopam) on glomerular hyperfiltration were studied in the early stage of diabetes in rats. Wistar rats received one injection of streptozotocin (STZ) and were treated 1 week later with L-dopa (2 x 10 mg/kg/day, s.c.), gludopa (2 x 3 or 2 x 10 mg/kg/day, s.c.), or fenoldopam (2 x 0.3 or 2 x 1 mg/kg/day, s.c.). Their renal functions were compared with those of untreated diabetic and nondiabetic control rats. STZ injection led to hyperglycemia that was kept moderate (20-25 mmol/L) by daily insulin therapy (2-4 U of NPH insulin). Within 2 weeks, glomerular hyperfiltration (polyfructosan clearance) developed in diabetic rats (30% increase vs. nondiabetic control). A rise in renal plasma flow (PAH clearance) was sometimes observed. One week of treatment with either L-dopa, gludopa, or fenoldopam normalized the glomerular filtration rate and decreased filtration fraction. These corrections occurred despite similar metabolic disturbance and kidney hypertrophy. Gludopa was less well tolerated by diabetic rats than L-dopa. Results with L-dopa showed that the normalization of glomerular hyperfiltration was linked to DA synthesis and stimulation of D1 receptors, since it was reversed by carbidopa, a dopa decarboxylase inhibitor, and by SCH 23390, a D1-selective antagonist. These data show that DA prodrugs and a D1 agonist can suppress diabetic glomerular hyperfiltration in the very early course of the disease in rats.
Refolding Hydrogels Self-Assembled from N-(2-Hydroxypropyl)methacrylamide Graft Copolymers by Antiparallel Coiled-Coil Formation (2006)

A novel hybrid hydrogel system based on N-(2-hydroxypropyl)methacrylamide copolymers was proposed. It consisted of the hydrophilic polymer backbone and a pair of oppositely charged peptide grafts. Two distinct pentaheptad peptides (CCE and CCK) were anticipated to create a dimerization motif and serve as physical cross-linkers. Consequently, the graft copolymers CCE-P and CCK-P self-assembled into hybrid hydrogels in situ; the process was modulated by the formation of antiparallel heterodimeric coiled-coils. This approach possesses an advantage to decrease the steric hindrance of the polymer backbone on the "in-register" alignment of peptide grafts. Indeed, equimolar mixtures of the graft copolymers, CCE-P/CCK-P, have been observed to self-assemble into hydrogels in PBS solution at neutral pH at concentrations as low as 0.1 wt %. Circular dichroism spectroscopy, sedimentation equilibrium experiments, and microrheology revealed that the self-assembly process corresponded to the two-stranded alpha-helical coiled-coil formation between CCE and CCK. Moreover, the formation of hybrid hydrogels was reversible. Denaturation of the coiled-coil domains with guanidine hydrochloride (GdnHCl) solutions resulted in disassembly of the hydrogels. Removal of GdnHCl by dialysis caused coiled-coil refolding and hydrogel reassembly. Scanning electron microscopy results demonstrated that the concentration of the graft copolymers had a significant impact on the structure and morphology of self-assembled hydrogels.
Joint Stochastic Approximation learning of Helmholtz Machines (2016)

Though with progress, model learning and performing posterior inference still remains a common challenge for using deep generative models, especially for handling discrete hidden variables. This paper is mainly concerned with algorithms for learning Helmholz machines, which is characterized by pairing the generative model with an auxiliary inference model. A common drawback of previous learning algorithms is that they indirectly optimize some bounds of the targeted marginal log-likelihood. In contrast, we successfully develop a new class of algorithms, based on stochastic approximation (SA) theory of the Robbins-Monro type, to directly optimize the marginal log-likelihood and simultaneously minimize the inclusive KL-divergence. The resulting learning algorithm is thus called joint SA (JSA). Moreover, we construct an effective MCMC operator for JSA. Our results on the MNIST datasets demonstrate that the JSA's performance is consistently superior to that of competing algorithms like RWS, for learning a range of difficult models.
Sleep Related Cardiovascular Risk (1997)

Although 20% of myocardial infarctions (MIs) and 15% of sudden cardiac deaths (SCD) occur between midnight and 6:00 A.M., nocturnal cardiac death remains an underappreciated and poorly understood phenomenon. The risk of nocturnal SCD may be‐especially high in patients with coronary disease confounded by apnea, heart failure, recent Ml, pause‐dependent Torsade de Pointes, and near miss victims of sudden infant death syndrome (SIDS) or siblings of SIDS vistims. During rapid eye movement (REM) sleep and dreaming, significant bursts in sympathetic nervous system activity may compromise coronary flow and trigger life‐threatening arrhythmia in susceptible individuals. In non‐REM or slow wave sleep, hypotension may lead to malperfusion of the heart and brain as a result of a lowered pressure gradient through stenosed vessels. Obstructive sleep apnea, which afflicts 1.5 million Americans, can generate reductions in arterial oxygen saturation, which may lead to hypertension and greatly increased risk of myocardial infarction. Cardiac medications which cross the blood‐brain barrier have the potential to alter sleep structure and provoke nightmares with severe cardiac autonomic discharge. Recently, new streamlined technology has been developed for tracking of sleep state. Among the most promising is the Nightcap, an unobtrusive, low cost device which accurately detects sleep state from eyelid and head movement with algorithms which could be incorporated into the circuity of ambulatory ECG recorders. Sleep states present unique autonomic, hemodynamic, and respiratory challenges to the diseased myocardium which cannot be replicated by daytime diagnostic tests. Because of the magnitude of the problem of nocturnal death and the availability of new practical technology for combined monitoring of sleep state and ECG, more widespread nighttime monitoring of the cardiac patient seems warranted.
Promoter and expression studies on an Arabidopsis thaliana dehydrin gene (1996)

A genomic clone of a group 2 lea/rab/dehydrin gene from Arabidopsis thaliana, Xero2/lti30, was cloned and sequenced. Promoter-GUS fusions were introduced into plants to analyse the promoter and determine expression patterns. Using root cultures, GUS expression was found to be moderately stimulated by abscisic acid (ABA), wounding, cold and dehydration. Results with an ABA-deficient mutant suggested endogenous ABA is required for these responses. Promoter deletion studies indicated multiple cis-acting elements are involved in the induction of the gene. GUS expression occurred in desiccated seeds, in all tissues of young seedlings and in roots (with the exception of the root tip), desiccated pollen grains, trichomes and the vascular tissues of leaves and stems in mature plants.
Thioglycosides as inhibitors of hSGLT1 and hSGLT2: Potential therapeutic agents for the control of hyperglycemia in diabetes (2007)

The treatment of diabetes has been mainly focused on maintaining normal blood glucose concentrations. Insulin and hypoglycemic agents have been used as standard therapeutic strategies. However, these are characterized by limited efficacy and adverse side effects, making the development of new therapeutic alternatives mandatory. Inhibition of glucose reabsorption in the kidney, mediated by SGLT1 or SGLT2, represents a promising therapeutic approach. Therefore, the aim of the present study was to evaluate the effect of thioglycosides on human SGLT1 and SGLT2. For this purpose, stably transfected Chinese hamster ovary (CHO) cells expressing human SGLT1 and SGLT2 were used. The inhibitory effect of thioglycosides was assessed in transport studies and membrane potential measurements, using alpha-methyl-glucoside uptake and fluorescence resonance energy transfer, respectively. We found that some thioglycosides inhibited hSGLT more strongly than phlorizin. Specifically, thioglycoside I (phenyl-1'-thio-beta-D-glucopyranoside) inhibited hSGLT2 stronger than hSGLT1 and to a larger extent than phlorizin. Thioglycoside VII (2-hydroxymethyl-phenyl-1'-thio-beta-D-galacto-pyranoside) had a pronounced inhibitory effect on hSGLT1 but not on hSGLT2. Kinetic studies confirmed the inhibitory effect of these thioglycosides on hSGLT1 or hSGLT2, demonstrating competitive inhibition as the mechanism of action. Therefore, these thioglycosides represent promising therapeutic agents for the control of hyperglycemia in patients with diabetes.
Attitudes of Nursing Personnel Toward Death and Dying: I. Linguistic Indicators of Avoidance (1979)

Abstract Two sequential studies were conducted to examine the suitability of quantitative linguistic analysis for the study of attitudes. Attitudes of nursing personnel toward death and the care of dying patients were examined unobtrusively by observing changes in selected linguistic behaviors. Avoidance was defined as the substitution of a pronoun for a negatively affected noun. Both studies supported the hypotheses that the use of the pronoun it would be greater in death‐related than in non‐death‐related responses ( ps &lt;.01). The initial study demonstrated that general pronoun usage was also increased in selected death‐related response categories ( p &lt;.01), but this finding may have been related to more standard pronoun usage in English rather than to use as a substitute for purposes of avoidance. The inference of increased use of it as a substitute for negatively affected nouns was substantiated by a review of it ‐referents for a segment of the data. The scientific and clinical implications of these findings are discussed.
Two Photon Polymerization of Polymer–Ceramic Hybrid Materials for Transdermal Drug Delivery (2007)

Three‐dimensional microneedle devices were created by femtosecond laser two photon polymerization (2PP) of organically modified ceramic (Ormocer®) hybrid materials. Arrays of in‐plane and out‐of‐plane hollow microneedles (microneedle length=800 μm, microneedle base diameter=150–300 μm) with various aspect ratios were fabricated. The fracture and penetration properties of the microneedle arrays were examined using compression load testing. In these studies, the microneedle arrays penetrated cadaveric porcine adipose tissue without fracture. Human epidermal keratinocyte viability on the Ormocer® surfaces polymerized using 2PP was similar to that on control surfaces. These results suggest that 2PP is able to create microneedle structures for transdermal drug delivery with a larger range of geometries than conventional microfabrication techniques.