gebhart/patrepeval huggingface dataset:
Spinal and Pontine Relay Pathways Mediating Respiratory Rhythm Entrainment by Limb Proprioceptive Inputs in the Neonatal Rat (2012)

The coordination of locomotion and respiration is widespread among mammals, although the underlying neural mechanisms are still only partially understood. It was previously found in neonatal rat that cyclic electrical stimulation of spinal cervical and lumbar dorsal roots (DRs) can fully entrain (1:1 coupling) spontaneous respiratory activity expressed by the isolated brainstem/spinal cord. Here, we used a variety of preparations to determine the type of spinal sensory inputs responsible for this respiratory rhythm entrainment, and to establish the extent to which limb movement-activated feedback influences the medullary respiratory networks via direct or relayed ascending pathways. During in vivo overground locomotion, respiratory rhythm slowed and became coupled 1:1 with locomotion. In hindlimb-attached semi-isolated preparations, passive flexion-extension movements applied to a single hindlimb led to entrainment of fictive respiratory rhythmicity recorded in phrenic motoneurons, indicating that the recruitment of limb proprioceptive afferents could participate in the locomotor-respiratory coupling. Furthermore, in correspondence with the regionalization of spinal locomotor rhythm-generating circuitry, the stimulation of DRs at different segmental levels in isolated preparations revealed that cervical and lumbosacral proprioceptive inputs are more effective in this entraining influence than thoracic afferent pathways. Finally, blocking spinal synaptic transmission and using a combination of electrophysiology, calcium imaging and specific brainstem lesioning indicated that the ascending entraining signals from the cervical or lumbar limb afferents are transmitted across first-order synapses, probably monosynaptic, in the spinal cord. They are then conveyed to the brainstem respiratory centers via a brainstem pontine relay located in the parabrachial/Kölliker-Fuse nuclear complex.
Enhanced Striatal Dopamine Release During Food Stimulation in Binge Eating Disorder (2011)

Subjects with binge eating disorder (BED) regularly consume large amounts of food in short time periods. The neurobiology of BED is poorly understood. Brain dopamine, which regulates motivation for food intake, is likely to be involved. We assessed the involvement of brain dopamine in the motivation for food consumption in binge eaters. Positron emission tomography (PET) scans with [(11)C]raclopride were done in 10 obese BED and 8 obese subjects without BED. Changes in extracellular dopamine in the striatum in response to food stimulation in food-deprived subjects were evaluated after placebo and after oral methylphenidate (MPH), a drug that blocks the dopamine reuptake transporter and thus amplifies dopamine signals. Neither the neutral stimuli (with or without MPH) nor the food stimuli when given with placebo increased extracellular dopamine. The food stimuli when given with MPH significantly increased dopamine in the caudate and putamen in the binge eaters but not in the nonbinge eaters. Dopamine increases in the caudate were significantly correlated with the binge eating scores but not with BMI. These results identify dopamine neurotransmission in the caudate as being of relevance to the neurobiology of BED. The lack of correlation between BMI and dopamine changes suggests that dopamine release per se does not predict BMI within a group of obese individuals but that it predicts binge eating.
Experimental tests of minimum viable population size (2000)

Abstract Fitness and rates of extinction were compared among populations of the housefly, Musca domestica L., kept either at constant effective sizes of 50, 500 or 1500 or passed through extreme founder events reducing effective size to 5. Populations were maintained for 24 generations, which for small to medium‐sized mammals would be less than the 200 years suggested by Soulé et al . (1986) as necessary for maintaining viable populations of endangered species. The results demonstrate that effective population sizes have to be greater than the 50 individuals suggested by Franklin (1980) to retain fitness and escape extinction, even in the short term. In contrast to populations of constant size that exhibited monotonic decreases in fitness through time, populations established with few founders rebounded from initial inbreeding depression. However, they were less adaptable to environmental stress than constant size populations, suggesting that populations founded with few numbers may do well within a single environment but may do far less well if they are reintroduced to natural environments or exposed to rapid environmental changes.
Angiotensin II as a Trophic Factor of White Adipose Tissue: Stimulation of Adipose Cell Formation (2001)

White adipose tissue is known to contain the components of the renin-angiotensin system giving rise to angiotensin II (AngII). In vitro, prostacyclin is synthesized from arachidonic acid through the activity of cyclooxygenases 1 and 2 and is released from AngII-stimulated adipocytes. Prostacyclin, in turn, is able to favor adipocyte formation. Based upon in vivo and ex vivo experiments combined to immunocytochemical staining of glycerol-3-phosphate dehydrogenase (GPDH), an indicator of adipocyte formation, it is reported herein that AngII favors the appearance of GPDH-positive cells. In the presence of a cyclooxygenase inhibitor, this adipogenic effect is abolished, whereas that of (carba)prostacyclin, a stable analog of prostacyclin that bypasses this inhibition, appears unaltered. Taken together, these results are in favor of AngII acting as a trophic factor implicated locally in adipose tissue development. It is proposed that AngII enhances the formation of GPDH-expressing cells from preadipocytes in response to prostacyclin released from adipocytes.
Metallurgical Studies and Optimization of Critical Crrent Density in Bi–(Pb)–Sr–Ca–Cu–O Superconductors (1989)

The Bi–(Pb)–Sr–Ca–Cu–O superconductor has been fabricated into tapes without a sheath and into multifilamentary wires and tapes with a Ag sheath. Superconducting properties, workability, the possibility of forming the superconducting phase in a long wire, morphology, effects of compacting and effects of c -axis alignment, to name a few, have been studied. Tape specimens prepared by combination and repetition of cold work (or cold press) and sintering showed a critical current density, J c , as high as 5×10 3 A/cm 2 at 77 K with good reproducibility and reliability, although these specimens are sufficiently thick (0.5–1.0 mm). (Generally, J c , at the zero field is inversely proportional to thickness.) For these tape specimens (with Cu sheath), sintering and J c measurement were performed after the Cu sheath was removed. X-ray analysis showed that most of these tape specimens consisted purely of the high- T c phase (∼107 K). In these specimens, the c axis tended to align well. This c axis alignment may be a reason for the enhancement in J c . On the other hand, the tape specimens cold-worked and sintered only once showed J c as small as 10 2 A/cm 2 the c axis showing no sign of the c axis alignment. A 1330-filament Bi–Pb–Sr–Ca–Cu–O wire with a Ag sheath has been successfully fabricated. This multifilamentary wire shows a critical temperature, T c of ∼105 K. A multifilamentary tape specimen fabricated by a combination of cold working and sintering showed a J c of 1.05×10 3 A/cm 2 at 77 K.
Polycondensation Stoichiometry (1975)

Abstract Some examples demonstrate the feasibility of interpreting the results of polycondensation from stoichiometry. Utilizing only the consequences of stoichiometric principles, it is possible to draw conclusions of the basic principles of forming polymers in the polycondensation process and to substantiate the physical meaning of a number of averaged values used during calculations. The results confirm the relationships found earlier by means of other methods and make it possible to draw significant conclusions with respect to the character of the process and the peculiarities of the products obtained.
An unfermented gel component of psyllium seed husk promotes laxation as a lubricant in humans (2000)

In contrast with other viscous fibers that are fermented completely in the colon, a component of psyllium is not fermented. This gel provided lubrication that facilitated propulsion of colon contents and produced a stool that was bulkier and more moist than were stools resulting with use of comparable amounts of other bowel-regulating fiber sources.
Algorithmic Statistical Process Control: Concepts and an Application (1992)

Scott A. Vander Wiel, William T. Tucker, Frederick W. Faltin, Necip Doganaksoy, Algorithmic Statistical Process Control: Concepts and an Application, Technometrics, Vol. 34, No. 3 (Aug., 1992), pp. 286-297
Classical but effective techniques for estimating cardiovascular dynamics (1997)

This article first describes the effectiveness and the limitations of classical approaches based on linear models for the cardiovascular system. The authors then introduce their own work on less-invasive and real-time estimation of cardiac output flow and pump function in the clinical setting. It is shown that system identification techniques using linear models can yield unexpectedly accurate results useful for patient care.
Necrotic Enteritis in Chickens Associated with<i>Clostridium sordellii</i> (2015)

Three outbreaks of necrotic enteritis-like disease associated with Clostridium sordelii were diagnosed in commercial broiler chicken flocks with 18,000 to 31,000 birds between 18 and 26 days old. Clinical signs in the affected flocks included high mortality up to 2% a day, depression, and diarrhea. The main gross changes included segmental dilation of the small intestine with watery contents, gas, mucoid exudate, and roughened and uneven mucosa, occasionally covered with a pseudomembrane. Microscopic lesions in the small intestine were characterized by extensive areas of coagulative necrosis of the villi, fibrinous exudate in the lumen, and high numbers of large, Gram-positive rods, occasionally containing subterminal spores, seen in the necrotic tissue and lumen. These rods were identified as C. sordellii by immunohistochemistry. Clostridium sordellii was isolated in an almost pure culture from the intestine of affected birds. A retrospective study of commercial broiler chicken and turkey submissions to the California Animal Health and Food Safety Laboratory System revealed that C. sordellii had been isolated from intestinal lesions in outbreaks of necrotic enteritis-like disease in 8 of 39 cases, 5 times together with Clostridium perfringens and 3 times alone. The latter three cases are reported here.
Normalization of Gene-Expression Microarray Data (2010)

Expression microarrays are designed to quantify the amount of mRNA in a specific sample. However, this can only be done indirectly through quantifying the color intensities returned by labeled mRNA molecules bound to the array surface. Translating pixel intensities into transcript expression requires a series of computations, generically known as preprocessing and normalization steps. In this chapter, we introduce the basic concepts and methods, and illustrate them using data from three commonly used commercial platforms.
Galectin-8: a complex sub-family of galectins (Review) (2001)

Galectins are animal lectins, that can specifically bind beta-galactosides. Twelve galectins have been described in vertebrates, belonging to three different groups: prototype, tandem-repeat and chimeric. These proteins seem to be involved in cellular interactions and neoplastic transformations. We present an overview of a particular galectin member: galectin-8. This galectin, which has been intensively studied over the last six years, presents a particular type of gene regulation. It is widely expressed in tumoral tissues and seems to be involved in integrin-like cell interactions. Studies show that the LGALS8 gene encodes for almost seven mRNAs by alternative splicing pathways and various polyadenylation sites. These mRNAs could encode for six isoforms of galectin-8, of which three belong to the tandem-repeat galectin group (with two carbohydrate binding domains) and the three others to the prototype group (one carbohydrate binding domain). All these isoforms seem to be differentially expressed in various tumoral cells. This untypical galectin-8 subfamily seems to have a complex expression regulation, that could be involved in cancer phenomena.
Cell Activity of ELID-Machined Titanium Surface (2012)

We investigated the cell activity of controlled titanium surface using various grinding methods including ELID (Electrolytic In-Process Dressing) grinding method. The influence of titanium surface condition by each grinding process on the cell activity was evaluated by ALP activity of MSC(Mesenchymal Stem Cells). The ALP activity of controlled surface by ELID grinding process using # 2000 wheel was higher than that of other titanium surface. The morphological, chemical properties of machined surface by grinding method was observed using various analytical method.
Effect of ellagic acid and hydroxylated flavonoids on the tumorigenicity of benzo[a]pyrene and (±)-7β, 8α-dihydroxy-9α, 10α-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene on mouse skin and in the newborn mouse (1985)

Ellagic acid, quercetin and robinetin were tested for their ability to antagonize the tumor-initiating activity of benzo[a]pyrene (B[a]P) and (+/-)-7 beta, 8 alpha-dihydroxy-9 alpha, 10 alpha-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (B[a]P 7,8-diol-9,10-epoxide-2), the ultimate carcinogenic metabolite of benzo[a]-pyrene. Ellagic acid, robinetin or quercetin (2500 nmol) had no tumor-initiating activity on mouse skin, but the topical application of 2500 nmol of ellagic acid 5 min before a tumor-initiating dose of 200 nmol of B[a]P 7,8-diol-9,10-epoxide-2 caused a 59-66% inhibition in the number of skin tumors per mouse that were observed after 15-20 weeks of promotion with 12-O-tetradecanoylphorbol-13-acetate. Similar treatment with 2500 nmol of robinetin or quercetin caused a statistically insignificant 16-24% inhibition in the tumor-initiating activity of 200 nmol of B[a]P 7,8-diol-9,10-epoxide-2 applied 5 min later. Treatment of mice with 2500 nmol of ellagic acid 5 min before the application of 50 nmol of B[a]P inhibited the mean number of skin tumors per mouse by 28-33% after 15-20 weeks of promotion, but these decreases were not statistically significant. Robinetin and quercetin had little or no effect on the tumor-initiating activity of B[a]P on mouse skin. Treatment of preweanling mice with 1/7, 2/7 and 4/7 of the total dose of ellagic acid (300 nmol), robinetin (1400 nmol), myricetin (1400 nmol) or quercetin (1400 nmol) i.p. on their first, eighth and fifteenth day of life, respectively, did not cause the formation of tumors in animals that were killed 9-11 months later. Similar treatment of preweanling mice with the above doses of the phenolic compounds 10 min before the i.p. injection of a total dose of 30 nmol of B[a]P 7,8-diol-9,10-epoxide-2 during the animal's first 15 days of life caused a 44-75% inhibition in the number of diol-epoxide-induced pulmonary tumors per mouse. Similar treatment with these plant phenols had little or no effect on B[a]P-induced pulmonary tumors.
Contingent gene regulatory networks and B cell fate specification (2005)

The B cell developmental pathway represents a leading system for the analysis of regulatory circuits that orchestrate cell fate specification and commitment. Considerable progress has been achieved within the past decade in the identification and genetic analysis of various regulatory components. These components include the transcription factors PU.1, Ikaros, Bcl11a, E2A, EBF, and Pax-5, as well as the cytokine receptors Flk2 and IL-7R. Experimental evidence of connectivity among the regulatory components is used to assemble sequentially acting and contingent gene regulatory networks. Transient signaling inputs, self-sustaining positive feedback loops, and cross-antagonism among alternate cell fate determinants are key features of the proposed networks that instruct the development of B lymphocyte precursors from hematopoietic stem cells.
Meter and Periodicity in Musical Performance (2001)

Abstract This paper presents a psychoacoustically based method of data reduction motivated by the desire to analyze the rhythm of musical performances. The resulting information is then analyzed by the "Periodicity Transform" (which is based on a projection onto "periodic subspaces") to locate periodicities in the resulting data. These periodicities represent the rhythm at several levels, including the "pulse", the "measure", and larger structures such as musical "phrases." The implications (and limitations) of such automated grouping of rhythmic features is discussed. The method is applied to a number of musical examples, its output is compared to that of the Fourier Transform, and both are compared to a more traditional "musical" analysis of the rhythm. Unlike many methods of rhythm analysis, the techniques can be applied directly to the digitized performance (i.e., a sound- file) and do not require a musical score or a MIDI transcription. Several examples are presented that highlight both the strengths and weaknesses of the approach.
Concise Synthesis of Isoquinoline via the Ugi and Heck Reactions (2004)

[reaction: see text] Two types of isoquinoline scaffolds were successfully constructed in a combinatorial format via the Ugi four-component reaction and the Pd-catalyzed intramolecular Heck reaction, starting from readily available starting materials.
Cloning and expression in Escherichia coli of the genes of the arginine deiminase system of Streptococcus sanguis NCTC 10904 (1989)

The common oral bacterium Streptococcus sanguis can degrade arginine via the arginine deiminase (AD) system. The three enzymes of this system, AD, ornithine carbamyltransferase (OTC), and carbamate kinase (CK), catalyze the breakdown of arginine to ornithine, CO2, and two molecules of ammonia, with the production of ATP from ADP. The genes of the AD system, which are subject to complex regulation in the oral streptococci, have been isolated in bacteriophage lambda by screening for AD activity. The AD gene, designated arcA, was expressed from recombinant bacteriophage or in cells harboring plasmid subclones from this phage at a level up to 1,000-fold lower than the level in fully derepressed S. sanguis but apparently under the control of its own promoter. By subcloning in Escherichia coli mutants defective in anabolic OTC (argF argL) and CK (carB), it was demonstrated that the genes for S. sanguis OTC and CK were located adjacent to the AD gene. The levels of expression of the OTC and CK genes (arcB and arcC, respectively) were also very low in E. coli, although arcC expression was not as poor as arcA and arcB expression when compared with the levels found in S. sanguis. Also, arcB and arcC were unable to complement the defects in their anabolic counterparts. Introduction of the entire AD system or subclones which encoded only the AD gene into E. coli harboring defects in arginine and pyrimidine biosynthesis resulted in a 10- to 15-fold decrease in the level of AD activity, suggesting that arginine or its metabolites may regulate AD expression. Transposon mutagenesis was utilized to construct defined mutants of S. sanguis with mutations in the AD gene cluster. AD gene expression in these mutants indicated that the expression of the AD genes in this organism is strongly interrelated. The isolation and partial characterization of the arc genes represents the first step in the genetic manipulation of the AD system in the oral streptococci for analysis of the regulation of AD, analysis of the role of the system in plaque ecology, and utilization of the system to modulate the cariogenicity of dental plaque.
UVA and UVB Radiation Differentially Regulate Vascular Endothelial Growth Factor Expression in Keratinocyte-derived Cell Lines and in Human Keratinocytes (1999)

Vascular endothelial growth factor (VEGF) is a central regulator of neoangiogenesis in inflammatory and neoplastic conditions. Ultraviolet irradiation is one of the mainstays of dermatological therapy for various inflammatory skin diseases. In the present study we have compared the effects of UV irradiation on the production of VEGF by keratinocytes (KC) and by the KC-derived cell lines A431 and HaCaT. Irradiation of A431 and HaCaT cells with both UVA (10 J/cm2and 20 J/cm2) and UVB (8 mj/cm2and 16 mj/cm2) led to strong upregulation of VEGF mRNA and protein. Induction of VEGF by UVA and UVB in these cells was mediated by different pathways, i.e. the generation of free radicals and the secretion of (a) soluble factor(s), respectively. Unlike KC-derived cell lines, no increase in VEGF production was observed in KC in primary culture after irradiation with the same UV doses. Increasing the irradiation dose in these cells of UVA to 40 J/cm2led to a marked decrease in soluble VEGF, whereas doses as high as 32 mj/cm2UVB only minimally affected VEGF levels. Reduction of VEGF production by KC might contribute to the effect of UVA irradiation in inflammatory skin diseases. The differential response of primary KC and autonomously growing KC-derived cell lines to the induction of VEGF by UV light could favor neoangiogenesis in the vicinity of epidermal tumor cells in vivo, thereby endowing them with a growth advantage over normal cells.
Cavity-Directed, Highly Stereoselective [2+2] Photodimerization of Olefins within Self-Assembled Coordination Cages (2002)

Molecular flasks of self-assembled M6L4 nanocages promote the [2+2] photodimerization of olefins in a surprisingly efficient fashion. Thus, the dimerization of acenaphthylenes and naphthoquinones quantitatively proceeded in the cavity with remarkable rate acceleration and perfect regio- and stereocontrol (>98 %, see scheme). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2002/z18306_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Continuous measurement of the pressure-volume relationship in experimental heart failure produced by rapid ventricular pacing in conscious dogs (1992)

The contractile function of the left ventricle has been defined within the framework of the pressure-volume relationship. We employed a conductance catheter, together with a high-fidelity micromanometer, to obtain accurate pressure and volume data continuously on a beat-to-beat basis in conscious dogs. Reproducibility of conductance volumetry was proven by repeated in situ measurements of left ventricular volume on separate days in the same dog. Heart failure, produced by rapid ventricular pacing, was characterized by impaired systolic shortening, depressed contractility indices and incomplete left ventricular relaxation. The magnitude of the cardiotonic effects of dobutamine was significantly attenuated after development of heart failure. Dobutamine improved left ventricular early relaxation but did not affect chamber distensibility. In heart failure, the load sensitivity of relaxation was enhanced and the force-frequency response attenuated. This may elucidate the mechanisms of early diastolic dysfunction and the deleterious effect of an increase in heart rate in the failing heart. Thus, the conductance catheter provided a reliable and simple method of obtaining left ventricular volume continuously in conscious dogs.