gebhart/patrepeval huggingface dataset:
212 PORCINE BONE MARROW-DERIVED MESENCHYMAL STEM CELLS DIFFERENTIATE IN VITRO INTO SMOOTH MUSCLE CELLS. (2011)

In the context of multipotent stem cells, mesenchymal stem cells (MSC) derived from bone marrow have been identified as most promising cell types for the treatment of smooth muscle related injured tissues and organs. In the present study, the ability of porcine bone marrow derived MSC to differentiate in vitro into smooth muscle cells (SMC) was examined. MSC were isolated from domestic pig bone marrow by their readily adherent property to tissue culture plastic with fibroblast-like morphology. Cells were analysed for the expression of MSC specific markers by flow cytometer and mesenchymal lineage differentiation by following previously published protocols. Differences in values were analysed by one-way ANOVA using SPSS and data are presented as mean ± SD. Flow cytometry analysis of MSC showed the positive expression of markers, such as CD29 (97.33 ± 2.08%), CD44 (97.67 ± 1.15%), CD73 (62.33 ± 2.89%), CD90 (96.67 ± 2.08%) and vimentin (59.33 ± 2.52%). In contrast, the expression levels were significantly lower for CD34 (3.33 ± 1.53%), CD45 (3.67 ± 1.53%), major histocompatibility complex class II (MHC class II, 10.33 ± 2.52%) and swine leukocyte antigen-DR (SLA-DR, 9.67 ± 2.08%). The MSC were further confirmed by their ability to differentiate in vitro along the distinct lineages of adipocytes (Oil red O), osteocytes (von Kossa and Alizarin red) and chondrocytes (Alcian blue). Induction of SMC differentiation was performed with supplementation of porcine transforming growth factor-ß (TGF-ß) and recombinant human bone morphogenic protein 4 (BMP4) as described earlier (Wang et al. 2010 Tissue Eng. A 1201–1213) with minor modifications. Upon induction, porcine MSC acquired myoblast-like morphology with intracellular thin filaments. Immunofluorescence staining showed the presence of early and late markers of smooth muscle differentiation, such as a-smooth muscle actin (a-SMA), calponin, smooth muscle 22 a (SM22a) and smooth muscle-myosin heavy chain (SM-MHC) and their expression levels varied from 22.65% to 56.75%. Later, the expression of selected markers was demonstrated by Western blotting analysis. Consistent with this phenotypic characterisation, reverse transcription-polymerase chain reaction (RT-PCR) and quantitative PCR (RT-qPCR) further showed the expression and a sequential up-regulation of transcripts for a-SMA, calponin, SM22a and SM-MHC. However, no expression of SMC-specific markers was observed in untreated MSC. In conclusion, these findings suggest the ability of porcine MSC from bone marrow to differentiate in vitro into SMC in the presence of growth factors. Further understanding of SMC differentiation with functional properties would be essential for employing porcine MSC as a useful model for cell-based tissue engineering and regeneration strategies. This work was supported by Basic Science Research Program through the National Research Foundation (NRF) funded by the Ministry of Education, Science and Technology (2010-0010528) and BioGreen 21 (20070301034040), Republic of Korea.
ChemInform Abstract: Relaxant Activity of 6‐Cyano‐2,2‐dimethyl‐2H‐1‐benzopyran‐4‐ carboxamides and ‐thiocarboxamides and Their Analogues in Guinea Pig Trachealis. (1991)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Detection of dead layers and defects in polycrystalline Cu2O thin-film transistors by x-ray reflectivity and photoresponse spectroscopy analyses (2015)

Polycrystalline Cu2O films were fabricated on amorphous SiO2 glass by pulsed laser deposition at room temperature and postdeposition thermal annealing in N2 + O2 mixing gases. The authors made a phase map in annealing temperature (Tann) vs RO2 = [O2]/([O2] + [N2]) ratio and found that highly pure Cu2O films were obtained at RO2 ∼ 0.002%. The increase in Tann improved the crystal quality of the Cu2O films, and the maximum Hall mobility of ∼26 cm2/(V s) was obtained at 700 °C. Bottom-gate Cu2O thin-film transistors (TFTs) using the optimum Cu2O channels exhibited clear p-type operation; however, the largest field effect mobility is as small as the order of 10−2 cm2/(V s), indicating the existence of high-density hole trap states. Several subgap states were observed by optical absorption spectra of films and photoresponse spectroscopy of the TFTs. X-ray reflectivity analysis detected a low-density dead layer at the Cu2O–SiO2 glass substrate interface, which would be attributed to Cu diffusion into the glass substrate.
Optimal Design of Dialyzers (2016)

The performance of a dialyzer depends not only on membrane permeability to water and solutes, but also on flow conditions of the blood and dialysate, which are determined during dialyzer fabrication. Many types of high-flux dialyzers with high-performance membranes have a high internal filtration/backfiltration (IF/BF) flow rate. In the enhanced IF/BF dialyzer, membrane fouling occurs more readily than with the conventional dialyzer because of the high local transmembrane pressure needed to enhance the IF/BF flow rate. To select the optimal enhanced IF/BF dialyzer for individual patients, we need to balance the disadvantage of membrane fouling with the advantage of increased convective transport. Key Messages: The following principles should guide dialyzer development in the near term. (1) Dialyzers should show high performance for the removal of low-molecular-weight proteins related to certain complications under conditions of low albumin and amino acid loss. (2) Dialyzers with biocompatible membranes are required to prevent severe adverse reactions, even though the causal relationship between these reactions and some complications remains to be clarified.
MYD88-independent growth and survival effects of Sp1 transactivation in Waldenström macroglobulinemia (2014)

Sp1 transcription factor controls a pleiotropic group of genes and its aberrant activation has been reported in a number of malignancies, including multiple myeloma. In this study, we investigate and report its aberrant activation in Waldenström macroglobulinemia (WM). Both loss of and gain of Sp1 function studies have highlighted a potential oncogenic role of Sp1 in WM. We have further investigated the effect of a small molecule inhibitor, terameprocol (TMP), targeting Sp1 activity in WM. Treatment with TMP inhibited the growth and survival and impaired nuclear factor-κB and signal transducer and activator of transcription activity in WM cells. We next investigated and observed that TMP treatment induced further inhibition of WM cells in MYD88 knockdown WM cells. Moreover, we observed that Bruton's tyrosine kinase, a downstream target of MYD88 signaling pathway, is transcriptionally regulated by Sp1 in WM cells. The combined use of TMP with Bruton's tyrosine kinase or interleukin-1 receptor-associated kinase 1 and 4 inhibitors resulted in a significant and synergistic dose-dependent antiproliferative effect in MYD88-L265P-expressing WM cells. In summary, these results demonstrate Sp1 as an important transcription factor that regulates proliferation and survival of WM cells independent of MYD88 pathway activation, and provide preclinical rationale for clinical development of TMP in WM alone or in combination with inhibitors of MYD88 pathway.
Familial Aggregation in Specific Language Impairment (1989)

Self-report data from the families of children participating in the San Diego Longitudinal Study of specific developmental language impairment were used to assess familial aggregation in the disorder. Families of impaired children reported higher rates of affected first-degree relatives than did families of matched controls. Significantly higher incidence of maternal and paternal childhood language and/or learning disabilities, as well as sibling disability rates, were reported. The extent to which familial aggregation reflects genetic or environmental influences in specific language disorders remains to be determined.
An Investigation of Gold Adsorption from a Binary Mixture with Selective Mesoporous Silica Adsorbents (2006)

Gold-selective adsorbents were prepared from mesoporous MCM-41 silica by grafting organic amine groups (i.e., RNH2, R2NH, and R3N; R=propyl). NH2-MCM-41, NRH-MCM-41, and NR2-MCM-41 displayed strong affinity for gold and at 1 mmol/g loading adsorbed 0.40, 0.33, and 0.20 mmol/g of gold. Copper and nickel were not adsorbed on these adsorbents. Grafting surface chemical moieties introduces heterogeneity on an otherwise uniform MCM-41 pore surface and metal adsorption is best described by the Freundlich adsorption model. A series of binary adsorption equilibrium studies with NH2-MCM-41 containing 2.2 mmol RNH2/g shows that NH2-MCM-41 adsorbs only gold from solutions containing copper and nickel with an adsorption capacity of 0.6 mol of Au/mol of RNH2 (1.1 mmol of Au/g of NH2-MCM-41). Copper and nickel were not adsorbed by NH2-MCM-41 regardless of the solution concentration, composition, and pH (i.e., 2 to 4) in the presence of gold. The LeVan and Vermeulen adsorption model based on a single component Freundlich isotherm and corrected for the anion effect accurately predicted the binary adsorptions. The adsorbed gold was completely recovered by a simple acid wash and the recovered gold solution is 99% pure. The regenerated NH2-MCM-41 remained 100% selective for gold removal and exhibited the same adsorption capacity even after several uses.
Dynamic biophotonics: female squid exhibit sexually dimorphic tunable leucophores and iridocytes (2013)

Loliginid squid use tunable multilayer reflectors to modulate the optical properties of their skin for camouflage and communication. Contained inside specialized cells called iridocytes, these photonic structures have been a model for investigations into bio-inspired adaptive optics. Here, we describe two distinct sexually dimorphic tunable biophotonic features in the commercially important species Doryteuthis opalescens: bright stripes of rainbow iridescence on the mantle just beneath each fin attachment and a bright white stripe centered on the dorsal surface of the mantle between the fins. Both of these cellular features are unique to the female; positioned in the same location as the conspicuously bright white testis in the male, they are completely switchable, transitioning between transparency and high reflectivity. The sexual dimorphism, location and tunability of these features suggest that they may function in mating or reproduction. These features provide advantageous new models for investigation of adaptive biophotonics. The intensely reflective cells of the iridescent stripes provide a greater signal-to-noise ratio than the adaptive iridocytes studied thus far, while the cells constituting the white stripe are adaptive leucophores--unique biological tunable broadband scatterers containing Mie-scattering organelles activated by acetylcholine, and a unique complement of reflectin proteins.
RAB7A phosphorylation by TBK1 promotes mitophagy via the PINK-PARKIN pathway (2018)

Removal of damaged mitochondria is orchestrated by a pathway involving the PINK1 kinase and the PARKIN ubiquitin ligase. Ubiquitin chains assembled by PARKIN on the mitochondrial outer membrane recruit autophagy cargo receptors in complexes with TBK1 protein kinase. While TBK1 is known to phosphorylate cargo receptors to promote ubiquitin binding, it is unknown whether TBK1 phosphorylates other proteins to promote mitophagy. Using global quantitative proteomics, we identified S72 in RAB7A, a RAB previously linked with mitophagy, as a dynamic target of TBK1 upon mitochondrial depolarization. TBK1 directly phosphorylates RAB7A<sup>S72</sup>, but not several other RABs known to be phosphorylated on the homologous residue by LRRK2, in vitro, and this modification requires PARKIN activity in vivo. Interaction proteomics using nonphosphorylatable and phosphomimetic RAB7A mutants revealed loss of association of RAB7A<sup>S72E</sup> with RAB GDP dissociation inhibitor and increased association with the DENN domain-containing heterodimer FLCN-FNIP1. FLCN-FNIP1 is recruited to damaged mitochondria, and this process is inhibited in cells expressing RAB7A<sup>S72A</sup>. Moreover, nonphosphorylatable RAB7A failed to support efficient mitophagy, as well as recruitment of ATG9A-positive vesicles to damaged mitochondria. These data reveal a novel function for TBK1 in mitophagy, which parallels that of LRRK2-mediated phosphorylation of the homologous site in distinct RABs to control membrane trafficking.
Diastereoselective Addition of Chlorotitanium Enolate of N-Acyl Thiazolidinethione to O-Methyl Oximes:  A Novel, Stereoselective Synthesis of α,β-Disubstituted β-Amino Carbonyl Compounds via Chiral Auxiliary Mediated Azetine Formation (2003)

We have discovered a novel and highly diastereoselective synthesis of azetinyl thiazolidine-2-thiones that utilizes additions of the chlorotitanium enolates of N-acyl thiazolidin-2-thiones to O-methyl aldoximes. The "anti" azetines can be subsequently converted to the corresponding alpha,beta-disubstituted beta-amino carbonyl compound with retention of stereochemistry. The formation of azetine and the product of its "hydrolytic" opening has been confirmed by X-ray crystallographic analyses.
Terahertz Chemical Microscope for Calcium Ions and Stress Biomarker Sensing (2022)

Terahertz biosensing has gained enormous attention in medical diagnosis. In this study, we demonstrated that our developed terahertz chemical microscope (TCM) could be used for sensing of small molecules such as calcium ion, stress biomarker cortisol with extremely consumption of sample solutions and high sensitivity. Calcium ion sensitive membrane and DNA aptamer were utilized for calcium ions and cortisol sensing, respectively. The approach is unique and shows great promising for creating better future healthcare.
Novel method for measurement of medium size arterial lumen area with an impedance catheter: in vivo validation (2005)

There is no doubt that the transformation of a cardiac catheter into a conductance catheter that allows reliable and accurate assessment of lumen cross-sectional area (CSA) will provide a powerful diagnostic and treatment tool for the invasive cardiologist. The objective of this study was to develop a method based on the impedance catheter that allows accurate and reproducible measurements of CSA for medium size vessels (e.g., coronary, femoral, and carotid arteries). Two solutions of NaCl (0.5% and 1.5%) with known conductivities were injected directly into the lumen of the artery in eight swine. We showed that the CSA can be determined analytically from two Ohm's law-type algebraic equations that account for the parallel conductance of the current into the surrounding tissue. Excellent agreement was found between the conductance catheter with the proposed two-injection method and B-mode ultrasound (US). The root mean square error for the impedance measurements was 4.8% of the mean US diameter. The repeatability of the technique was assessed with duplicate measurements. The mean of the difference between the two measurements was nearly zero, and the repeatability coefficient was within 2.4% of the mean of the two measurements. The validated method was used to assess the degree of acute vasodilatation of the vessel in response to flow overload.
Large-Scale Assessment of Binding Free Energy Calculations in Active Drug Discovery Projects (2020)

Here we present an evaluation of the binding affinity prediction accuracy of the free energy calculation method FEP+ on internal active drug discovery projects and on a large new public benchmark set.
Defining the role of active-site loop fluctuations in dihydrofolate reductase catalysis (2005)

Dynamic processes are implicit in the catalytic function of all enzymes. To obtain insights into the relationship between the dynamics and thermodynamics of protein fluctuations and catalysis, we have measured millisecond time scale motions in the enzyme dihydrofolate reductase using NMR relaxation methods. Studies of a ternary complex formed from the substrate analog folate and oxidized NADP+ cofactor revealed conformational exchange between a ground state, in which the active site loops adopt a closed conformation, and a weakly populated (4.2% at 30 degrees C) excited state with the loops in the occluded conformation. Fluctuations between these states, which involve motions of the nicotinamide ring of the cofactor into and out of the active site, occur on a time scale that is directly relevant to the structural transitions involved in progression through the catalytic cycle.
Further studies of a laser quenched superconducting opening switch (1989)

NbN films were prepared on planar sapphire and on small-diameter cylindrical quartz and sapphire substrates. Films prepared on cylindrical substrates had a greater critical current density than those prepared on planar substrates. The highest current densities of 1*10/sup 7/ A/cm/sup 2/ were achieved on cylindrical sapphire substrates. Measurements of the laser power required to drive the switch into the normal state were made as a function of current being carried by the NbN-clad sapphire rod. These experiments indicated that near J/sub c/ very small amounts of laser energy were needed to drive the sample normal as expected. At current values well below J/sub c/, much larger energies were required. These large energies, which are roughly 10/sup 3/ larger than the condensation energy, were attributed to heating of the sapphire rod necessary to raise the NbN above its transition temperature. The desirable properties of a superconducting switch are the ability to carry large currents in the superconducting state and have a high resistance in the normal state. Considerations for using the high-T/sub c/ oxides in a superconducting switch are examined.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Role of peptidergic neurons in ocular herpes simplex infection in mice (1989)

Peptide-containing nerve fibers (peptidergic fibers) abundantly innervate the mammalian cornea. We investigated their role in ocular herpes simplex infection in mice by using capsaicin, which causes degeneration and permanent loss of peptidergic neurons in neonates and temporary peptide depletion in adult animals. The corneas of neonatally denervated BALB/c mice were observed for capsaicin-induced keratitis at 11-14 wk of age and were then infected bilaterally with herpes simplex virus 1 (HSV-1); trigeminal (TG) ganglia were cocultivated 6 wk later to establish the rate of latent infection. We also applied capsaicin eye drops to adult BALB/c mice that had been infected with HSV-1 6 wk earlier, and measured viral shedding before, and 3 days and 2 months after, administration of capsaicin drops; TG ganglia of these animals were cocultivated at 3 days and 2 months after capsaicin application. Neurotrophic keratitis was found in 81% of neonatally denervated animals; mortality rate due to HSV-1 infection was reduced from 80% in the controls to 24% in the capsaicin-treated group, and recovery of latent virus by cocultivation was reduced by 50%. Viral shedding could not be produced by capsaicin eye drops in adult animals infected with HSV-1. However, recovery of latent virus was significantly reduced in TG ganglia sampled 3 days and 2 months after capsaicin drops were instilled. Our findings suggest 1) that peptidergic fibers play a crucial role in the establishment of trigeminal HSV-1 latency and 2) that reactivation of latently infected ganglia can be inhibited by topical capsaicin.
TERRA biogenesis, turnover and implications for function (2010)

Telomeres are heterochromatic structures at the ends of eukaryotic chromosomes. As other heterochromatin regions, telomeres are transcribed, from the subtelomeric region towards chromosome ends into the long non-coding RNA TERRA. Telomere transcription is a widespread phenomenon as it has been observed in species belonging to several kingdoms of the eukaryotic domain. TERRA is part of telomeric heterochromatin in addition to being present in the nucleoplasm. Here, we review the current knowledge of TERRA structure, biogenesis and turnover. In addition, we discuss presumed roles of this RNA during replication of telomeric DNA, heterochromatin formation and the regulation of telomerase.
Hemodynamic consequences of ventricular interaction as assessed by model analysis (1991)

Because of close anatomic association, the pressure and volume in one ventricle can directly influence the pressure and volume in the opposite ventricle. To examine the importance of ventricular interdependence in controlling the circulation, we developed a computer model in which ventricular interdependence could be turned on and off. Left ventricular chamber contractility, as judged by maximal elastance (Emax), was enhanced on the order of 10% as a result of ventricular interaction, whereas right ventricular Emax was affected by as much as 60% under physiological conditions. With increases in systemic vascular resistance, ventricular interaction caused a smaller stroke volume (SV) decrease than with no interaction. For canine data (SV = 21.4 ml), doubling systemic vascular resistance decreased SV by 3.7 without ventricular interdependence, 3.5 with diastolic ventricular interdependence, and 3.3 ml with diastolic and systolic ventricular interdependence. In contrast, with increases in pulmonary vascular resistance, ventricular interaction caused a greater decrease in SV than with no interaction present. Decreasing left ventricular free wall elastance or right ventricular free wall elastance decreased SV. Diastolic ventricular interdependence reduced the SV changes, whereas systolic ventricular interdependence accentuated the SV changes with alterations in right and left ventricular free-wall elastance. The results of the present simulation demonstrate the importance of ventricular interdependence in the observed responses of the right ventricle to volume overload, pressure overload, and ischemia.
Analysis of the two-photon D1.DELTA.-X1.SIGMA.+ transition in carbon monoxide. 2. Perturbations in the (8-0) band (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the two-photon D1.DELTA.-X1.SIGMA.+ transition in carbon monoxide. 2. Perturbations in the (8-0) bandCarter Kittrell, Andre C. Le Floch, and Bruce A. GaretzCite this: J. Phys. Chem. 1993, 97, 10, 2221–2227Publication Date (Print):March 1, 1993Publication History Published online1 May 2002Published inissue 1 March 1993https://pubs.acs.org/doi/10.1021/j100112a024https://doi.org/10.1021/j100112a024research-articleACS PublicationsRequest reuse permissionsArticle Views46Altmetric-Citations8LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts