gebhart/patrepeval huggingface dataset:
Myocardial Nitric Oxide in Heart Failure (2000)

Over the past decade, evidence has emerged that nitric oxide (NO·) may play a role in the pathogenesis of myocardial failure. The effects of NO· in myocardial failure, as in other clinical situations, may be either beneficial or deleterious. NO· at relatively low levels appears to modulate the response of the myocardium to potentially deleterious stimuli, and thus in some situations may offset the progression of myocardial failure. On the other hand, at higher levels NO· has the ability to impair normal myocardial function and to exert direct toxic effects in the myocardium, as it can in other tissues. The effects of higher levels of NO· may be relevant to a variety of situations in which myocardial NO· is increased. These include conditions in which there is a clear inflammatory reaction such as sepsis, myocarditis, transplant rejection or acute infarction. There is now evidence that NO· production is also increased above physiologic levels in the myocardium of patients with chronic heart failure. These observations have led to the concern that with increasing levels, NO· may contribute to the pathogenesis of myocardial failure, and thus change from a friend to a foe.
Specific Recruitment of CC Chemokine Receptor 4–Positive Regulatory T Cells in Hodgkin Lymphoma Fosters Immune Privilege (2006)

Hodgkin lymphoma (HL) is characterized by the presence of a small number of tumor cells in a rich background of inflammatory cells, but the contribution of the abundant nontumor cells to HL pathogenesis is poorly understood. We showed that migratory CD4(+) cells induced by HL cells were hyporesponsive to T-cell receptor stimulation and suppressed the activation/proliferation of the effector CD4(+) T cells in an autologous setting. We further showed that HL cells in the affected lymph nodes were surrounded by a large number of lymphocytes expressing both CC chemokine receptor 4 (CCR4) and FOXP3. These findings indicate that the migratory cells induced by HL cells function as regulatory T (Treg) cells so that these cells create a favorable environment for the tumor cells to escape from host immune system. In addition, we showed that a chimeric anti-CCR4 monoclonal antibody (mAb) could deplete CCR4(+) T cells and inhibit the migration of CD4(+)CD25(+) T cells in vitro. Recognition of the importance of CCR4(+) Treg cells in the pathogenesis of HL will allow rational design of more effective treatments, such as use of an anti-CCR4 mAb, to overcome the suppressive effect of CCR4(+) Treg cells on the host immune response to tumor cells.
Dielectrics and Waves (1955)

Macroscopic approach complex permittivity and permaebility polarization and magnetization couloumb and dipole fields space-charge fields correlations between electric and magnetic phenomena Maxwell's field equations electromagnetic waves in unbounded space descriptions of dielectrics by various sets of parameters forces field energy and radiation polarized radiation dipole radiation boundary conditions Fresnel's equations reflection and refraction of plane waves by loss-free dielectrics standing waves interference optics skin effect reflection and refraction by media with loss guided waves electromagnetic fields in waveguides measurement of dielectrics in shorted waveguides short-circuited guides and cavity resonators treatment of field phenomena by equivalent circuits representation of dielectrics by lumped circuit equivalents molecular approach-survey molecular mechanisms of polarization the Clausius-Mosotti-Lorens equation electronic polarization anomalous dispersion and resonance absorbtion electromagnetic radiation Bohr's quantum theory wave mechanics structure of atoms Stark effect Zeeman effect the energy level diagram of atoms dispersion formula of quantum mechanics the formulation of molucules wave functions of molecules and the concept of quantum mechanical resonance bond energies and dipole moments of diatomic molecules static dielectric constants and dipole moments of polar gases polyatomic molecules vibration and rotation electronic, atomic and orientation polarization of gas molecules band width of spectral lines microwave sperctroscopy pressure broadening and Debye's realization equation the Mosotti catastrophe and the local field formation and structure of liquids and solids models for the discussion of orientation polarization in liquids and solids piezoelectricity dipole moments - piezoelectricity and crystal structure ferroelectricity paramagnetism and ferromagnetism ferromagnetic metals and semiconductors interfacial and space-charge polarization conduction and breakdown.
Evaluation of Three Molecular Assays for Rapid Identification of Methicillin-Resistant Staphylococcus aureus (2007)

One home-developed assay and two commercial assays for the rapid identification of methicillin-resistant Staphylococcus aureus (MRSA) were compared by use of a collection of clinical isolates displaying highly diverse genetic backgrounds. Our results suggest that users of orfX-staphylococcal cassette chromosome mec-based assays should repeatedly monitor the local epidemiology to minimize the risks of detection bias and the omission of emerging MRSA clones.
The Role of Negative Pressure Wound Therapy With Reticulated Open Cell Foam in the Treatment of War Wounds (2008)

The treatment of war wounds poses many unique challenges to all healthcare providers (surgeons, flight medics, nurses, etc.), whether they are located at the far forward trauma hospitals located in or near areas of conflict, at regional hospitals such as Landstuhl Medical Center in Germany, or the larger military hospitals in the United States. These complex wounds often involve massive loss of soft tissue and bone, are contaminated, and are unlike most injuries seen at civilian hospitals. Treatment guidelines, or doctrine, are the result of lessons learned in conflicts over the past few centuries dating back to early 19th century Europe through the Vietnam and recent Persian Gulf war. Advances in surgical and medical treatment have resulted from the complex challenges presented to the war trauma surgeon. More than 1 million patients have been treated for chronic pressure ulcers, abdominal wounds, diabetic ulcers, and acute civilian trauma wounds with negative pressure wound therapy with reticulated open cell foam (NPWT/ROCF) as delivered by V.A.C.(R) Therapy (KCI, San Antonio, TX) for over the past decade. However, the use of NPWT/ROCF for the care of war wounds at battlefield trauma hospitals and/or in the aeromedical evacuation transport system aboard aircraft is a new application of this wound treatment not yet accepted as doctrine. Investigational studies are ongoing to study the safety and efficacy of the treatment of battlefield wounds with NPWT/ROCF both for those national citizens treated at the trauma hospitals in Iraq and Afghanistan and for those wounded American and coalition patients who are transported through the aeromedical transport system to medical centers in the United States.
Dendritic cells recruited to the lung shortly after intranasal delivery of Mycobacterium bovis BCG drive the primary immune response towards a type 1 cytokine production (2003)

We showed in a previous study that the intranasal (i.n) delivery of bacille Calmette-Guérin (BCG) to BP2 mice (H-2q) inhibits eosinophilia and bronchial hyperreactivity in a mouse model of asthma. The present work has been performed to characterize the leucocyte lineages recruited to the lungs of mice after i.n. delivery of BCG and potentially involved in the polarization of T lymphocytes. The different antigen-presenting cells (APC) recruited to bronchoalveolar lavage (BAL) and to lung tissue of mice shortly after the delivery of BCG were analysed in parallel as well as their capacity to drive the immune response towards a T helper type 1 cytokine production. Alveolar macrophages (AM) from the BAL were CD11c+, F4/80+ and CD11b-, and in the lung tissue two major populations of potential APC were detected: one CD11c-, F4/80+, CD11b+ and I-Aq- was identified as interstitial macrophages (IM) and a second expressing CD11c+ and I-Aq+ antigens, negative for CD11b and F4/80 markers as leucocytic dendritic cells (DC). Freshly isolated DC up-regulated CD11b and CD40 antigens after overnight culture, but remained negative for CD8alpha antigen, suggesting a myeloid origin. Lung DC which produced high amount of interleukin (IL)-12 were potent inducers of naive CD4+ T lymphocyte priming, as assessed by interferon-gamma (IFN-gamma) production by these naive CD4+ T cells. Lung explants recovered long term after BCG delivery produced sustained levels of IFN-gamma. Our results suggest that AM and particularly DC by secreting IL-12 shortly after BCG delivery induce the long-term persistence of IFN-gamma-secreting T cells percolating in BCG-loaded lung tissue.
Calcium, Vitamin D, Dairy Foods, and the Occurrence of Colorectal Adenomas among Men and Women in Two Prospective Studies (1994)

A high intake of calcium, vitamin D, or specific dairy products is thought to reduce the incidence of colorectal cancer. The association of these nutrients and foods with the occurrence of colorectal adenomas, precursors of cancer, was studied in two large US cohort studies. Cases were patients with a diagnosis of adenomatous polyps of the left colon or rectum (331 men, 1986-1990; 350 women, 1980-1988), and controls were persons with endoscopic findings negative for adenoma (9,159 men and 8,585 women). After adjustment for age, total energy, family history of colorectal cancer, body mass index, alcohol consumption, folate, intake of saturated fat and fiber, indications for endoscopy, and previous endoscopy, total calcium intake was not associated with the risk for adenoma (relative risk (RR), highest vs. lowest quintile of intake: men, 1.13, 95% confidence interval (CI) 0.76-1.66; women, 1.17, 95% CI 0.81-1.69). Total vitamin D intake was unrelated to the risk for adenoma in men (RR = 1.29, 95% CI 0.87-1.93). An inverse nonsignificant association was observed in women in the 1980-1988 analyses (RR = 0.68, 95% CI 0.41-1.13, trend p = 0.09), mainly attributable to the intake of multivitamin supplements, but an analysis of 4-year data (1984-1988) using a more detailed dietary assessment showed no association with vitamin D (RR = 1.04, 95% CI 0.65-1.67). Milk consumption and intake of total fermented dairy products were not related to adenoma risk. In conclusion, the occurrence of colorectal adenoma was neither related to calcium intake nor to milk consumption, whereas vitamin D from supplements but not diet was slightly, but not significantly, inversely associated with risk among women only.
The wireless Internet: promises and challenges (2000)

In the 1980s, the PC migrated from the hobbyist's den to the corporate desktop, a huge development in information technology. Ten years later, that honor fell to the Internet and wireless telephones, which until now have followed separate paths. The author predicts that this decade will see the convergence of wireless communications and the Internet. Although the commercial impact of wireless communications has thus far been limited to cellular telephones, the business and technical communities anticipate rapid growth in wireless data services. Almost daily, some prominent company announces plans for a "wireless e-commerce" enhancement to its business. The author examines the outlook for wireless data. Specifically, he considers the utility of wireless data services and why they have not been widely adopted until now. He also looks at the technology trends promoting wireless Internet convergence, and the obstacles preventing their implementation. As computing becomes increasingly mobile, the limitations of third-generation cellular telephony and the wireless applications protocol become increasingly apparent. The author asserts that only a new approach can make the Internet truly wireless.
Detection of pathogenic Yersinia enterocolitica in foods and water by immunomagnetic separation, nested polymerase chain reactions, and colorimetric detection of amplified DNA (1993)

A two-step polymerase chain reaction (PCR) procedure with two nested pairs of primers specific for the yadA gene of Yersinia enterocolitica was developed. The PCR assay identified all common pathogenic serogroups (O:3, O:5,27, O:8, O:9, O:13, and O:21) from three continents and differentiated pathogenic Y. enterocolitica from Y. pseudotuberculosis and from a variety of nonpathogenic yersiniae representing 25 serogroups and four species. The performance of the method was evaluated with seeded food and water samples. We compared two procedures for sample preparation prior to PCR: one was based on immunomagnetic separation of the target bacteria from the sample, using magnetic particles coated with immunoglobulin antibodies to Y. enterocolitica serogroup O:3, and the other method consisted of a series of centrifugation steps combined with proteinase treatment. Regardless of the method used, the PCR assay was capable of detecting 10 to 30 CFU/g of meat in 10(6)-fold excess of indigenous bacteria. When the samples were enriched overnight in a nonselective medium, the sensitivity was increased to approximately 2 CFU/g, except for samples with an extremely high background flora (> 10(7) CFU/g). We compared gel electrophoretic detection of PCR products with a colorimetric detection method designated DIANA (detection of immobilized amplified nucleic acids), which enabled easy visualization of amplified fragments in a microtiter plate format with an optical density reader. DIANA and gel electrophoresis showed complete concordance in their discrimination between positive and negative samples. The combination of immunomagnetic separation, nested PCR, and DIANA makes possible the development of a fully automated analytic process which requires a minimum of laboratory manipulations.
Interactive Indirect Illumination Using Voxel Cone Tracing (2011)

Abstract Indirect illumination is an important element for realistic image synthesis, but its computation is expensive and highly dependent on the complexity of the scene and of the BRDF of the involved surfaces. While off‐line computation and pre‐baking can be acceptable for some cases, many applications (games, simulators, etc.) require real‐time or interactive approaches to evaluate indirect illumination. We present a novel algorithm to compute indirect lighting in real‐time that avoids costly precomputation steps and is not restricted to low‐frequency illumination. It is based on a hierarchical voxel octree representation generated and updated on the fly from a regular scene mesh coupled with an approximate voxel cone tracing that allows for a fast estimation of the visibility and incoming energy. Our approach can manage two light bounces for both Lambertian and glossy materials at interactive framerates (25–70FPS). It exhibits an almost scene‐independent performance and can handle complex scenes with dynamic content thanks to an interactive octree‐voxelization scheme. In addition, we demonstrate that our voxel cone tracing can be used to efficiently estimate Ambient Occlusion.
The CB1 Cannabinoid Receptor Can Sequester G-Proteins, Making Them Unavailable to Couple to Other Receptors (1999)

We tested the hypothesis that human CB1 cannabinoid receptors (hCB1) can sequester G(i/o)-proteins from a common pool and prevent other receptors from signaling. Human CB1 cannabinoid receptors were expressed in superior cervical ganglion (SCG) neurons by microinjection of hCB1 cDNA. Expression of hCB1 cannabinoid receptors abolished the Ca(2+) current inhibition by endogenous pertussis toxin-sensitive G(i/o)-coupled receptors for norepinephrine (NE) and somatostatin (SOM) but not by endogenous pertussis toxin-insensitive G(s)-coupled receptors for vasoactive intestinal polypeptide. Signaling by NE was rescued by expression of Galpha(oB), Gbeta(1), and Ggamma(3). Expression of mGluR2 metabotropic glutamate receptors, another pertussis toxin-sensitive G-protein-coupled receptor, had no effect on the signaling by NE or SOM. Some hCB1 receptors were constitutively active because the cannabinoid receptor inverse agonist SR 141617A enhanced the Ca(2+) current. Some hCB1 receptors also appear to be precoupled to G(i/o)-proteins because the cannabinoid agonist WIN 55,212-2 decreased the Ca(2+) current at a time when no G-proteins were available to couple to alpha(2)-adrenergic and somatostatin receptors. In SCG neurons microinjected with a lower concentration of hCB1 cDNA, the effect of SR 141716A was reduced, and the response to NE and SOM was partially restored. Subsequent to the application of SR 141716A, the Ca(2+) current inhibition by NE and SOM was abolished. These results suggest that both the active and inactive states of the hCB1 receptor can sequester G(i/o)-proteins from a common pool. Cannabinoid receptors thus have the potential to prevent other G(i/o)-coupled receptors from transducing their biological signals.
Functional effects of base changes which further define the decoding center of Escherichia coli 16S ribosomal RNA: Mutation of C1404, G1405, C1496, G1497, and U1498 (1993)

The existence and functional importance of the tertiary base pair G1401:C1501, which brings together two universally present and highly sequence-conserved single-stranded segments of small subunit ribosomal RNA, was proven recently by mutational analysis [Cunningham, P. R., Nurse, K., Bakin, A., Weitzmann, C. J., Pflumm, M., & Ofengand, J. (1992) Biochemistry 31, 12012-12022]. Here we show that the additional nearby tertiary base pairs C1404:G1497 and G1405:C1496 also exist and are functionally important for tRNA binding to the ribosomal A and P sites. Breakage of the base pairs in turn led to a loss of activity at both A and P sites, whereas restoration in the reverse orientation led to recovery of activity. Recovery was incomplete, indicating that base pairing alone is insufficient for full restoration of function. Mutation of U1498 to G created the potential for the tertiary base pair C1403:G1498, which could stack on the aforementioned double base pair, creating a more stable helix longer by one residue. This mutation did not affect subunit association, A- and P-site binding of tRNA to 70S, fMet-tRNA binding to 30S, or poly(Phe) synthesis but did block formation of the first peptide bond, fMet-Val. Mutation of U1498 to A or C did not show this effect. Since the G1498 mutant could make both the 70S initiation complex and the peptide bond, as shown by its ability to form fMet-puromycin, the block in fMet-Val synthesis appears to involve some aspect of A-site function.(ABSTRACT TRUNCATED AT 250 WORDS)
B‐regulatory cells in autoimmunity and immune mediated inflammation (2013)

B cells are a source of inhibitory cytokines such as IL-10 and TGF-β. The ability of being B-regulatory cells (B-regs) was shown to be driven by many stimulatory factors such as toll-like receptors, CD40-ligand and others. However, the characterization of B-regs is still underway. B-regs express high levels of CD25, CD86, IL-10 and TGF-β. In addition, we propose that semaphorin3A is a regulatory molecule and therefore can serve as one of the additional markers for B-regs. This subset of B cells was able to suppress Th1 proliferation, thus contributing to the maintenance of self-tolerance. Finally, the potentiation of B-reg function should become the aim of many immunomodulatory drugs, contributing to a better control of autoimmune diseases.
Polarization mode dispersion tolerance of bandwidth-efficient multilevel modulation schemes (2002)

We have identified polarization division multiplex to be advantageous for capacity doubling of fiber spans with a given amplification bandwidth, due to its superior sensitivity, good polarization mode dispersion tolerance and terminal equipment simplicity.
Interferon gamma licensing of human dendritic cells in T-helper–independent CD8+ alloimmunity (2010)

The high frequency of allogeneic reactive CD8(+) T cells in human and their resistance to immunosuppression might be one of the reasons why successful tolerance-inducing strategies in rodents have failed in primates. Studies on the requirement for T-helper cells in priming CD8(+) T-cell responses have led to disparate findings. Recent studies have reported CD8(+)-mediated allograft rejection independently of T-helper cells; however, the mechanisms that govern the activation of these T cells are far from being elucidated. In this study, we demonstrated that lipopolysaccharide-treated dendritic cells (DCs) were able to induce proliferation and cytotoxic activity of allogeneic CD8(+) T cells independently of CD4(+) T cells, while adding mycophenolic acid (MPA) to LPS abolished this capacity and resulted in anergic CD8(+) T cells that secreted high levels of interleukin-4 (IL-4), IL-5, IL-10, and transforming growth factor-β. Interestingly, we demonstrated that MPA inhibited the LPS-induced synthesis of tumor necrosis factor-α, IL-12, and interferon-γ (IFN-γ) in DCs. Importantly, we found that adding exogenous IFN-γ to MPA restored both the synthesis of cytokines and the ability to activate CD8(+) T cells. However, adding IL-12 or tumor necrosis factor-α had no effect. These results suggest that IFN-γ has an important role in licensing DCs to prime CD4-independent CD8 allogeneic T cells via an autocrine loop.
Medical hyperspectral imaging: a review (2014)

Hyperspectral imaging (HSI) is an emerging imaging modality for medical applications, especially in disease diagnosis and image-guided surgery. HSI acquires a three-dimensional dataset called hypercube, with two spatial dimensions and one spectral dimension. Spatially resolved spectral imaging obtained by HSI provides diagnostic information about the tissue physiology, morphology, and composition. This review paper presents an overview of the literature on medical hyperspectral imaging technology and its applications. The aim of the survey is threefold: an introduction for those new to the field, an overview for those working in the field, and a reference for those searching for literature on a specific application.
Interferon is the suppressor of hematopoiesis generated by stimulated lymphocytes in vitro. (1984)

Lymphocytes that inhibit hematopoiesis may have a pathogenic role in some forms of bone marrow failure, and lymphocyte-mediated suppression may also be important in the normal regulation of bone marrow function. We have investigated the mechanism of in vitro suppression of hematopoiesis by T cells by using the methylcellulose colony culture system. Total peripheral blood T cells and separated subpopulations of helper (OKT4+) and suppressor (OKT8+) cells that have been stimulated by exposure to lectin suppress autologous colony formation by bone marrow myeloid (CFU-C) and erythroid (BFU-E) progenitor cells. Medium conditioned by these cells is also inhibitory, indicating that the suppressor activity is a soluble factor. A strong correlation existed for the concentration of interferon and the degree of hematopoietic suppressor activity in these supernatants; both activities peaked at days 3 to 5 of incubation and had sharply declined by day 7. Interferon production was enhanced by exposure of lymphocytes to sheep red blood cells during the rosetting procedure. Specific antiserum and a monoclonal antibody directed against gamma-(immune) interferon abrogated the inhibitory activity for hematopoiesis produced by lectin-stimulated T cells; an antiserum to alpha-interferon was generally much less effective in neutralizing activity. We infer from these results that gamma-interferon is the mediator of hematopoietic suppression generated by lectin-treated T-cells.