gebhart/patrepeval huggingface dataset:
Early changes in physiological variables after stroke (2008)

Several aspects of physiology, notably blood pressure, body temperature, blood glucose, and blood oxygen saturation, may be altered after an ischemic stroke and intracerebral hemorrhage. Generally, blood pressure and temperature rise acutely after a stroke, before returning to normal. Blood glucose and oxygen levels may be abnormal in individuals, but they do not follow a set pattern. Several aspects of these physiological alterations remain unclear, including their principal determinants - whether they genuinely affect prognosis (as opposed to merely representing underlying processes such as inflammation or a stress response), whether these effects are adaptive or maladaptive, whether the effects are specific to certain subgroups (e.g. lacunar stroke) and whether modifying physiology also modifies its prognostic effect. Hypertension and hyperglycemia may be helpful or harmful, depending on the perfusion status after an ischemic stroke; the therapeutic response to their lowering may be correspondingly variable. Hypothermia may provide benefits, in addition to preventing harm through protection from hyperthermia. Hypoxia is harmful, but normobaric hyperoxia is unhelpful or even harmful in normoxic patients. Hyperbaric hyperoxia, however, may be beneficial, though this remains unproven. The above-mentioned uncertainties necessitate generally conservative measures for physiology management, although there are notably specific recommendations for thrombolysis-eligible patients. Stroke unit care is associated with better outcome, possibly through better management of poststroke physiology. Stroke units can also facilitate research to clarify the relationship between physiology and prognosis, and to subsequently clarify management guidelines.
Promotion of water-mediated carbon removal by nanostructured barium oxide/nickel interfaces in solid oxide fuel cells (2011)

The existing Ni-yttria-stabilized zirconia anodes in solid oxide fuel cells (SOFCs) perform poorly in carbon-containing fuels because of coking and deactivation at desired operating temperatures. Here we report a new anode with nanostructured barium oxide/nickel (BaO/Ni) interfaces for low-cost SOFCs, demonstrating high power density and stability in C(3)H(8), CO and gasified carbon fuels at 750°C. Synchrotron-based X-ray analyses and microscopy reveal that nanosized BaO islands grow on the Ni surface, creating numerous nanostructured BaO/Ni interfaces that readily adsorb water and facilitate water-mediated carbon removal reactions. Density functional theory calculations predict that the dissociated OH from H(2)O on BaO reacts with C on Ni near the BaO/Ni interface to produce CO and H species, which are then electrochemically oxidized at the triple-phase boundaries of the anode. This anode offers potential for ushering in a new generation of SOFCs for efficient, low-emission conversion of readily available fuels to electricity.
Chemically induced mammary gland cancer in the National Toxicology Program's carcinogenesis bioassay (1995)

Incidences of breast cancer change in populations as people migrate from one area of the world to another, suggesting that environmental factors contribute to this disease. There is a continuing effort to identify these environmental factors and the role that exposures to specific chemicals play in this disease. Results from experimental studies show that chemicals identified to cause mammary gland cancer in rodents are frequently mutagenic chemicals, suggesting that genetic damage is an important mechanism for the induction of this cancer. Prevalent classes of chemicals that were identified to cause mammary gland cancer in rodents in studies by the National Toxicology Program include halogenated hydrocarbons, aromatic amino/nitro compounds and epoxide-forming chemicals. Results from these experimental studies will help to elucidate mechanisms and possible causes of breast cancer in humans.
Elimination of dihydrogen from collision-activated alkoxide negative ions in the gas phase. An ab initio and isotope effect study (1984)

Ab initio calculations indicate the loss of H2 from the exoxide negative ion to be a stepwise process in which the key intermediate is the ‘long-lived’ species [H–⋯ HCH2CHO]; deuterium isotope effects which are observed for the collision-induced eliminations of H2 and HD from deuteriated ethoxide ions support the operation of a stepwise reaction.
White-light emission from InGaN-GaN multiquantum-well light-emitting diodes with Si and Zn codoped active well layer (2002)

Si and Zn codoped In/sub x/Ga/sub 1-x/N-GaN multiple-quantum-well (MQW) light-emitting diode (LED) structures were grown by metal-organic vapor phase epitaxy (MOVPE). It was found that we can observe a broad long-wavelength donor-acceptor (D-A) pair related emission at 500 nm/spl sim/560 nm. White light can thus be achieved by the combination of such a long-wavelength D-A pair emission with the InGaN bandedge related blue emission. It was also found that the electroluminescence (EL) spectra of such Si and Zn codoped InGaN-GaN MQW LEDs are very similar to those measured from phosphor-converted white LEDs. That is, we can achieve white light emission without the use of phosphor by properly adjusting the indium composition and the concentrations of the codoped Si and Zn atoms in the active well layers and the amount of injection current.
Characterization of poliovirus replicons encoding carcinoembryonic antigen. (1994)

Recombinant vaccines hold great promise for the prevention and therapy of infections diseases and cancer. We have explored the use of poliovirus as a recombinant vector to deliver genes into cells for the purpose of vaccination. For our studies, we have chosen to express the gene-encoding carcinoembryonic antigen (CEA) using a novel poliovirus vector. We have constructed a recombinant CEA-poliovirus replicon in which the CEA gene was substituted for the poliovirus capsid gene. Following in vitro transcription, the RNA was transfected into cells to demonstrate CEA expression. We found that a genome in which the region encoding the signal sequence of the CEA protein (amino acids 1-34) was removed was replication competent (i.e., referred to as a replicon). We encapsidated the CEA-poliovirus replicon by transfecting this RNA into cells previously infected with a recombinant vaccinia virus (VV-P1) which expresses the poliovirus capsid protein (P1). Serial passage in the presence of VV-P1 resulted in the generation of stocks of these encapsidated replicons. Infection of cells with the encapsidated replicon containing the CEA-poliovirus genome resulted in expression of the CEA protein. To test immunogenicity, mice susceptible to poliovirus were given three doses of the encapsidated replicons via the i.m. route. By the third administration, a CEA-specific antibody response was detected. Potential future use of the poliovirus replicon system as both a parenteral and oral vaccine vector is discussed.
Enhancement in emission current from dry-processed n-type Si field emitter arrays after tip anodization (1995)

n-type porous Si field emitter arrays (FEAs) have been fabricated by tip surface anodization to improve the emission characteristics. The gate voltage required for emission could be lowered by tip anodization and the emission current was enhanced by a factor of up to 10. Fowler-Nordheim plots for the FEAs before and after tip anodization revealed that the work function of the tips could be decreased and the emission from various FEAs with initially different characteristics could be homogeneously improved by tip surface anodization.
A QoS-aware residential gateway with bandwidth management (2005)

The residential gateway (RG) is the core device of the digital home network. The RG translates communication protocols, coordinates information sharing and serves as a gateway to external networks for integrated multimedia entertainment, on-line services, home security, home automation, information exchange and data storage. Modern home network applications especially for real-time are demanding guaranteed quality of service (QoS) for bounded network bandwidth resources. In order to initiate a DiffServ-QoS (differentiated services-QoS) bandwidth management mechanism during network congestion, this paper proposes a QRG (QoS-aware residential gateway) with both real-time traffic monitoring, DiffServ-QoS and CBQ bandwidth management. Firstly, QRG classifies traffic flow into separate types, with specialized treatment per traffic type to optimize compliance with user-specified priorities. Applications with higher priority get the right to deliver first. Additionally, QRG with built-in traffic control function adopts class based queuing (CBQ) as DiffServ-QoS bandwidth/traffic management for optimized use of bounded network resources. QRG is experimentally implemented on a Linux platform. High-end application is simulated by hosting QRG in a general-purpose PC, while minimum-cost modular application is simulated by hosting QRG in a light-weight low-power ARM920T embedded system. Results show that in both implementations, QRG successfully performs DiffServ-QoS and CBQ bandwidth management functions so that good quality of service and video performance are maintained during network congestion.
Current State of Animal (Mouse) Modeling in Melanoma Research (2015)

Despite the considerable progress in understanding the biology of human cancer and technological advancement in drug discovery, treatment failure remains an inevitable outcome for most cancer patients with advanced diseases, including melanoma. Despite FDA-approved BRAF-targeted therapies for advanced stage melanoma showed a great deal of promise, development of rapid resistance limits the success. Hence, the overall success rate of melanoma therapy still remains to be one of the worst compared to other malignancies. Advancement of next-generation sequencing technology allowed better identification of alterations that trigger melanoma development. As development of successful therapies strongly depends on clinically relevant preclinical models, together with the new findings, more advanced melanoma models have been generated. In this article, besides traditional mouse models of melanoma, we will discuss recent ones, such as patient-derived tumor xenografts, topically inducible BRAF mouse model and RCAS/TVA-based model, and their advantages as well as limitations. Although mouse models of melanoma are often criticized as poor predictors of whether an experimental drug would be an effective treatment, development of new and more relevant models could circumvent this problem in the near future.
Linking Clinical Relevance and Statistical significance in Evaluating Intra-Individual Changes in Health-Related Quality of Life (1999)

The use of the SEM to evaluate individual patient change should be explored among other health-related quality of life instruments with established standards for clinically relevant differences. Only then can it be determined whether the one-SEM criterion can be consistently applied as a proxy for clinically meaningful change.
QuillajaSaponin Can Modulate Ovalbumin-Induced IgE Allergic Responses through Regulation of Th1/Th2 Balance in a Murine Model (2006)

Quillaja saponin is the extract from the balk of a South American tree, and it is considered to modulate immunological responses. We hypothesized that Quillaja saponin may change allergy-associated cytokine profile and antigen-specific immune responses. The purpose of this study is to investigate whether Quillaja saponin can suppress ovalbumin (OVA)-induced IgE-mediated allergic responses through promoting a dominant Th1 immune response. The spleen cells from BALB/c mice, which were primed by OVA, were used for an in vitro challenge test. The level of total and OVA-specific IgE, IL-4, IFN-gamma, and IL-12 was determined by enzyme-linked immunosorbent assay (ELISA). BALB/c mice were orally administered with saponin for 35 days. The mice were immunized intraperitoneally with OVA on days 14 and 21. After intraperitoneal challenge with OVA on day 35, anaphylactic symptoms were monitored. Total and specific IgE and IgG, specific IgG1 and IgG2a, and histamine levels in serum were analyzed by ELISA. The increase of IL-12 and IFN-gamma levels was observed in the presence of Quillaja saponin, while the IL-4 level was decreased. Furthermore, Quillaja saponin suppressed total and OVA-specific IgE secretion in spleen cells. Balb/c mice that were orally administered Quillaja saponin exhibited lower total and OVA-specific IgE and OVA-specific IgG secretions, whereas total IgG levels remained unchanged. Suppression of OVA-specific IgG1 and an increase of OVA-IgG2a were observed in mice fed saponin. Quillaja saponin also decreased serum histamine levels and diminished anaphylactic symptoms. The present study indicates that Quillajasaponin can suppress allergen-specific IgE-mediated reactivity in a murine model of food allergy, which results from shifting from a Th2-dominated to a Th1-dominated immune response.
Successful application of large microneedle patches by human volunteers (2017)

We describe, for the first time, the design, production and evaluation of large microneedle patches. Such systems, based on 16 individual microneedle arrays (needle height 600μm), were prepared from aqueous blends of 15% w/w Gantrez<sup>®</sup> S97 and 7.5% w/w poly(ethyleneglycol) 10,000Da. Ester-based crosslinking was confirmed by FTIR and mechanical strength was good. Insertion depths in a validated skin model were approximately 500μm. Ten human volunteers successfully self-inserted the microneedles of these larger patches in their skin, following appropriate instruction, as confirmed by transepidermal water loss measurements. The mean insertion depth ranged between 300 and 450μm over the area of the large patches. That this was not significantly different to a single unit MN patch self-applied by the same volunteers is encouraging. Microneedle patch sizes much larger than the 1-2cm<sup>2</sup> will be required if this technology is to be successfully translated to clinic for delivery of drug substances. The work described here suggests that use of such larger patches by patients can be successful, potentially opening up the possibility for a significant expansion of the size of the market for transdermal drug delivery.
Tributyrin: a prodrug of butyric acid for potential clinical application in differentiation therapy. (1994)

Butyric acid (BA) induces cytodifferentiation in vitro of a wide variety of neoplastic cells. The potential clinical utility of BA is limited by the apparent difficulty of achieving effective concentrations because of its rapid metabolism and short plasma half-life. In this study we addressed two approaches that may achieve effective concentrations of BA in vivo. One strategy is to use BA derivatives as prodrugs that can be metabolized to yield effective BA concentrations in vivo over a sustained period of time. Another strategy is to define agents that are synergistic with BA so that the desired effect can be achieved at lower concentrations of BA. In this study monobutyrin (MB) and tributyrin (TB) were studied in vitro for their effects on inducing differentiation of human myeloid leukemia HL60 cells and murine erythroleukemia cells. On a molar basis TB was about 4-fold more potent than either BA or MB for inducing differentiation of HL60 cells. BA, MB, or TB induced erythroid differentiation of murine erythroleukemia cells. On a molar basis TB was 3- to 4-fold more potent than BA, whereas MB was much less potent than BA. Combinations of all-trans-retinoic acid with either BA, MB, or TB induced myeloid differentiation of HL60 cells synergistically. We saw marked reductions in the doses of each agent that were needed in combination to achieve the same effect as single agents. For example, 130 microM TB, 110 nM all-trans-retinoic acid, and a combination of 13 microM TB plus 13 nM all-trans-retinoic acid all induced half-maximal differentiation of HL60 cells. Our results suggest that the readily available TB may be an effective prodrug of BA and may be useful either as a sole agent or in combination with other agents for cytodifferentiation therapy of human malignancies.
The Saccharomyces cerevisiae Pheromone Response Pathway (1993)

Orthologs and paralogs are two fundamentally different types of homologous genes that evolved, respectively, by vertical descent from a single ancestral gene and by duplication. Orthology and paralogy are key concepts of evolutionary genomics. A ...Read More
Evolutionary Relationships of Wild Hominids Recapitulated by Gut Microbial Communities (2010)

Multiple factors over the lifetime of an individual, including diet, geography, and physiologic state, will influence the microbial communities within the primate gut. To determine the source of variation in the composition of the microbiota within and among species, we investigated the distal gut microbial communities harbored by great apes, as present in fecal samples recovered within their native ranges. We found that the branching order of host-species phylogenies based on the composition of these microbial communities is completely congruent with the known relationships of the hosts. Although the gut is initially and continuously seeded by bacteria that are acquired from external sources, we establish that over evolutionary timescales, the composition of the gut microbiota among great ape species is phylogenetically conserved and has diverged in a manner consistent with vertical inheritance.
Nucleotide variants within the IQGAP1 gene in diffuse‐type gastric cancers (2004)

IQGAP1 is recognized as a negative regulator of cell-cell adhesion at adherens junctions in several cell types, including gastric mucosal cells. The histopathologic appearance of diffuse gastric carcinoma is defined by non- or poorly cohesive tumor cells, indicating abnormal intercellular adhesion. Hence, we screened 38 gastric cancers for activating point mutations in IQGAP1. In 2 of the 33 diffuse gastric cancers, there was a missense nucleotide change predicted to alter the amino acid sequence in the GAP-related domain, which includes part of the binding site for the activated small G proteins Cdc42 and Rac1. Many intronic IQGAP1 gene changes were observed, and several occurred more frequently in diffuse-type gastric cancers than in intestinal-type gastric cancers. A highly variable pentanucleotide repeat was identified in the final intron of IQGAP1. The most expanded six-repeat sequence was present exclusively in diffuse-type gastric cancers. Additionally, 19 diffuse cases and two intestinal cases exhibited silent coding region nucleotide alterations. Taken together, our results suggest that IQGAP1 coding sequence mutations are not a frequent event in gastric cancer, but do occur in a subset of diffuse-type gastric carcinomas. Additional studies analyzing other proteins involved in cell adhesion may lead to a better molecular understanding of the histopathologic appearance of diffuse gastric cancers.
Presentation of a foreign peptide on the surface of tomato bushy stunt virus. (1997)

A 13-amino-acid peptide derived from the V3 loop of human immunodeficiency virus (HIV-1) glycoprotein 120 (gp120) was attached as a C-terminal gene fusion to the coat protein of tomato bushy stunt virus (TBSV). The architecture of this plant virus permitted external display of the foreign sequence 180 times on the surface of the chimaeric virus particle. The chimaera replicated to a level similar to wild-type TBSV and the foreign sequence was retained through six sequential passages in plants. The HIV epitope was detected on the surface of the virus capsid by a V3-specific monoclonal antibody and by human sera from HIV-1-positive patients, demonstrating the potential of using plant-derived chimaeric particles for diagnostic purposes. Chimaeric virus also induced a specific immune response to the foreign HIV epitope when injected into NMRI mice.
Inflorescence stem grafting made easy in Arabidopsis (2012)

We describe a simple and reliable method for grafting sections of an Arabidopsis inflorescence stem. This step-by-step protocol facilitates laboratories without grafting experience to further explore the molecular and chemical signalling which coordinates communications between the shoot and reproductive tissues.
The endogenous cannabinoid system protects against colonic inflammation (2004)

Excessive inflammatory responses can emerge as a potential danger for organisms' health. Physiological balance between pro- and anti-inflammatory processes constitutes an important feature of responses against harmful events. Here, we show that cannabinoid receptors type 1 (CB1) mediate intrinsic protective signals that counteract proinflammatory responses. Both intrarectal infusion of 2,4-dinitrobenzene sulfonic acid (DNBS) and oral administration of dextrane sulfate sodium induced stronger inflammation in CB1-deficient mice (CB1 -/- ) than in wild-type littermates (CB1 +/+ ). Treatment of wild-type mice with the specific CB1 antagonist N-(piperidino-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-pyrazole-3- carboxamide (SR141716A) mimicked the phenotype of CB1 -/- mice, showing an acute requirement of CB1 receptors for protection from inflammation. Consistently, treatment with the cannabinoid receptor ago- nist R(-)-7-hydroxy-delta6 -tetra-hydrocannabinol-dimethylheptyl (HU210) or genetic ablation of the endo- cannabinoid-degrading enzyme fatty acid amide hydrolase (FAAH) resulted in protection against DNBS-induced colitis. Electrophysiological recordings from circular smooth muscle cells, performed 8 hours after DNBS treatment, revealed spontaneous oscillatory action potentials in CB1 -/- but not in CB1 +/+ colons, indi- cating an early CB1-mediated control of inflammation-induced irritation of smooth muscle cells. DNBS treatment increased the percentage of myenteric neurons expressing CB1 receptors, suggesting an enhancement of cannabinoid signaling during colitis. Our results indicate that the endogenous cannabinoid system represents a promising therapeutic target for the treatment of intestinal disease conditions characterized by excessive inflammatory responses.
Palladium Catalyzed Bispyrimidine Thioether Synthesis (1999)

The synthesis of sulfur-bridged bispyrimidines via coupling of a halopyrimidine and pyrimidine thiolate anion has been explored utilizing a palladium catalyzed cross coupling reaction. Several reaction parameters including stoichiometry and choice of solvent have been optimized. These reaction conditions have allowed for the preparation of a wide range of functionalized bispyrimidines.