gebhart/patrepeval huggingface dataset:
Blast‐related mild traumatic brain injury: mechanisms of injury and impact on clinical care (2009)

Mild traumatic brain injury has been called the signature injury of the wars in Iraq and Afghanistan. In both theaters of operation, traumatic brain injury has been a significant cause of mortality and morbidity, with blast-related injury the most common cause. Improvised explosive devices have been the major cause of blast injuries. It is estimated that 10% to 20% of veterans returning from these operations have suffered a traumatic brain injury, and there is concern that blast-related injury may produce adverse long-term health affects and affect the resilience and in-theater performance of troops. Blast-related injury occurs through several mechanisms related to the nature of the blast overpressure wave itself as well as secondary and tertiary injuries. Animal studies clearly show that blast overpressure waves are transmitted to the brain and can cause changes that neuropathologically are most similar to diffuse axonal injury. One striking feature of the mild traumatic brain injury cases being seen in veterans of the wars in Iraq and Afghanistan is the high association of mild traumatic brain injury with posttraumatic stress disorder. The overlap in symptoms between the disorders has made distinguishing them clinically challenging. The high rates of mild traumatic brain injury and posttraumatic stress disorder in the current operations are of significant concern for the long-term health of US veterans with associated economic implications.
Alternative mRNA splicing generates multiple forms of peptidyl-glycine alpha-amidating monooxygenase in rat atrium. (1989)

Peptidyl-glycine alpha-amidating monooxygenase (PAM; EC 1.14.17.3) catalyzes the conversion of a variety of glycine-extended peptides into biologically active alpha-amidated product peptides in a reaction dependent on copper, ascorbate, and molecular oxygen. We have isolated and sequenced cDNAs representing the two major classes of PAM mRNA in the adult rat heart atrium. The two types of cDNA, rPAM-1 and rPAM-2, are identical except for the deletion of a 315-base-pair segment within the protein coding region in rPAM-2, suggesting that rPAM-1 and rPAM-2 arise by alternative splicing. Northern analysis using a cDNA probe derived from within the 315-base-pair region deleted in rPAM-2 visualized the larger of the PAM mRNAs in adult rat atrium and not the smaller, indicating that the presence or absence of this 315-nucleotide segment is a major feature distinguishing the two size forms of PAM mRNA. The 105 amino acid segment that distinguishes the two forms of atrial PAM contains a consensus N-glycosylation site and a paired basic amino acid site of potential importance in endoproteolytic processing. Comparison of the nucleotide sequences of rat, frog, and bovine PAM cDNAs reveals an extremely well conserved segment in the 3' untranslated region. The high degree of conservation in amino acid sequence throughout the catalytic, intragranular, and cytoplasmic domains of rat atrium, bovine pituitary, and frog skin PAM suggests that both the catalytic and noncatalytic domains of the protein subserve important functions.
Modeling Organic Surfaces with Self‐Assembled Monolayers (1989)

Abstract The interfacial properties of organic materials are of critical importance in many applications, especially the control of wettability, adhesion, tribology, and corrosion. The relationships between the microscopic structure of an organic surface and its macroscopic physical properties are, however, only poorly understood. This short review presents a model system that has the case of preparation and the structural definition required to provide a firm understanding of interfacial phenomena. Long‐chain thiols, HS(CH 2 ) n X, adsorb from solution onto gold and form densely packed, oriented monolayers. By varying the terminal functional group, X, of the thiol, organic surfaces can be created having a wide range of structures and properties. More complex systems can be constructed by coadsorbing two or more thiols with different terminal functional groups or with different terminal functional groups or with different chain lengths onto a common gold substrate. By these techniques, controlled degrees of disorder can be introduced into model surfaces. We have used these systems to explore the relationships between the microscopic structure of the monolayers on a molecular and supramolecular scale and their macroscopic properties. Wettability is a macroscopic interfacial property that has proven of particular interest.
The Nude Mouse Model for the Study of Human Skin Disorders (1994)

Normal human skin grafted onto the nude mouse can be maintained without any signs of rejection throughout the life-span of the animal. Indeed, the nude mouse model is a powerful tool for understanding the pathological process of the skin. Until now many skin diseases such as psoriasis, cutaneous lupus, pemphigus and vitiligo have been looked at using the nude mouse model, which has helped to clarify the role of the various factors involved.
Infectious Endophthalmitis Following Sutureless Cataract Surgery (1991)

Within the last 6 months, three cases of infectious endophthalmitis following sutureless cataract surgery have been referred to us. Two of these cases followed uncomplicated sutureless phacoemulsification with intraocular lens implantation. One case was complicated by a postoperative hyphema with additional surgery for clot removal 2 days following the initial procedure.
Diagnosis of Coccidioidomycosis with Use of the Coccidioides Antigen Enzyme Immunoassay (2008)

The Coccidioides EIA has potential to be useful in the rapid diagnosis of more-severe forms of coccidioidomycosis.
OSF DCE: guide to developing distributed applications (1994)

An easy-to-use guide, which shows how to successfully design and implement distributed computer applications using OSF DCE. This book/disk package provides a detailed introduction to OSF DCE and each of its major components.
A stereocontrolled, enantiomerically specific total synthesis of thienamycin (1980)

A versatile stereocontrolled total synthesis of thienamycin starting from L-aspartic acid is reported. Stereocontrol is achieved by potassium tri-sec-butylborohydride reduction of a thermodynamically formed 3 alpha-acetylazetidinone intermediate. The key [3.2.0] bicyclic ring system is prepared by a metal catalyzed carbene insertion reaction.
Safety evaluation of orally administered afoxolaner in 8-week-old dogs (2014)

The safety profile of afoxolaner, a new isoxazoline molecule, was evaluated following the regulatory requirements when administered six times orally in a soft chewable formulation at a dose of at least 1×, 3× or 5× the maximum exposure dose (6.3mg/kg) in 8-week-old Beagle dogs. Thirty-two healthy puppies (16 males and 16 females) were enrolled and allocated randomly to one of four treatment groups. Treatments were administered at three, one-month dose intervals (Days 0, 28 and 56) followed by three, 2-week dose intervals (Days 84, 98 and 112). The study ended at Day 126. The groups were: Group 1: non-treated control; Group 2: afoxolaner chews administered at a dosage of at least 6.3mg/kg (1×); Group 3: afoxolaner chews administered at a dosage of at least 18.9 mg/kg (3×); and Group 4: afoxolaner chews administered at a dosage of at least 31.5mg/kg (5×). All dogs were examined for general health twice a day beginning on at least Day-14. Physical examinations, and blood collections for clinical pathology analysis and afoxolaner plasma concentrations, were performed throughout the study. On Day 126, 2 weeks following the last treatment, all dogs were humanely euthanized prior to the conduction of a full necropsy with tissue collection. No afoxolaner-related changes were observed in growth, physical variables, clinical pathology variables, or tissues examined histologically. No clinically or statistically significant health abnormalities related to the administration of afoxolaner were observed. Vomiting and diarrhea were observed sporadically across all groups including the controls. The kinetics of afoxolaner plasma concentrations was linear following 6 doses of 6.3, 18.9 and 31.5mg/kg and dose proportionality was demonstrated. There were no statistical differences (p<0.05) between samples taken on Days 55 and 83 when compared to Day 27. Based upon the results of this study, afoxolaner was shown to be safe when administered repeatedly in a soft chewable formulation at up to 5× the maximum exposure dose in dogs as young as 8 weeks of age.
71 Purification of recombinant M1 muscarinic acetylcholine receptor (1998)

Conference Article| November 01 1998 71 Purification of recombinant M1 muscarinic acetylcholine receptor Edward C. Hulme; Edward C. Hulme 1Division of Physical Biochemistry, National Institute for Medical Research, Mill Hill, London NW7 1AA, U.K. Search for other works by this author on: This Site PubMed Google Scholar Carol A. M. Curtis Carol A. M. Curtis 1Division of Physical Biochemistry, National Institute for Medical Research, Mill Hill, London NW7 1AA, U.K. Search for other works by this author on: This Site PubMed Google Scholar Biochem Soc Trans (1998) 26 (4): S361. https://doi.org/10.1042/bst026s361 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation Edward C. Hulme, Carol A. M. Curtis; 71 Purification of recombinant M1 muscarinic acetylcholine receptor. Biochem Soc Trans 1 November 1998; 26 (4): S361. doi: https://doi.org/10.1042/bst026s361 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1998 Biochemical Society1998 Article PDF first page preview Close Modal You do not currently have access to this content.
Isolation and Transcription Profiling of Purified Uncultured Human Stromal Stem Cells: Alteration of Gene Expression after In Vitro Cell Culture (2005)

Stromal stem cells proliferate in vitro and may be differentiated along several lineages. Freshly isolated, these cells have been too few or insufficiently pure to be thoroughly characterized. Here, we have isolated two populations of CD45-CD34+CD105+ cells from human adipose tissue which could be separated based on expression of CD31. Compared with CD31+ cells, CD31- cells overexpressed transcripts associated with cell cycle quiescence and stemness, and transcripts involved in the biology of cartilage, bone, fat, muscle, and neural tissues. In contrast, CD31+ cells overexpressed transcripts associated with endothelium and the major histocompatibility complex class II complex. Clones of CD31- cells could be expanded in vitro and differentiated into cells with characteristics of bone, fat, and neural-like tissue. On culture, transcripts associated with cell cycle quiescence, stemness, certain cytokines and organ specific genes were down-regulated, whereas transcripts associated with signal transduction, cell adhesion, and cytoskeletal +CD105+CD31- cells from human adipose tissue have stromal stem cell properties which may make them useful for tissue engineering.
Purification of Factor VII from Bovine Plasma (1974)

Abstract Factor VII has been purified up to 330,000-fold from bovine plasma by adsorption on, and elution from, barium sulfate, anion exchange chromatography, gel filtration, and affinity chromatography on benzamidine coupled to Sepharose. The purified material is inhibited by diisopropylphosphorofluoridate both in its native state and after the formation of a complex with tissue factor in the presence of calcium ions. The Factor VII-tissue factor complex, unlike native Factor VII, has coagulant activity; this activity results in a complex proteolytic activation of Factor X to Xa, as shown by gel electrophoresis in the presence of sodium dodecyl sulfate, and by assay of the Factor Xa produced. It has been concluded that Factor VII, unlike Factor X and prothrombin, circulates in the plasma as an active enzyme which has an absolute requirement for tissue factor in order to develop proteolytic activity towards Factor X.
<title>Optical oxygen sensor based on RUDPP fluorescence quenching</title> (1996)

An optical oxygen sensor system based on the process of fluorescence quenching is reported. The device detects the fluorescence quenching of a ruthenium complex [Ru(dip- phen)3(ClO)4] also known as RUDPP by sensing minute variations of a fluorescent membrane emission intensity. A dual channel design consisting of a reference branch and a sensing branch is used. Both branches include modulated light from a bright blue LED acting as the excitation source coupled through an enclosed channel to a photo-diode. The sensing branch has the RUDPP fluorescence quenching membrane sandwiched between the blue LED and the photo-diode, while the reference branch is void of such membrane. To avoid membrane saturation in the sensing branch, the excitation source is modulated with a 350 Hz square wave. The output signals of the two channels are amplified separately and subtracted from each other using a difference amplifier. Adjusting the difference amplifier output to zero effectively ensures excitation source interference cancellation. The photodiode in the sensing branch detects the intensity variations as a function of fluorescent quenching by oxygen. It was possible to isolate the fluorescent signal completely, based solely on electronic components, without the use of optical filters. The output signal from the difference amplifier is further amplified (with an adjustable gain for calibration) and displayed. Sensor performance was tested and it exhibited both excellent sensitivity and response time, compared to the recent oxygen sensors reported by others. A decrease of less than 4 percent oxygen concentration was readily detectable. We conclude that this design establishes the feasibility of developing an optical oxygen sensor, relying solely on optoelectronic components for detection.
Radio gain (1967)

The radio gain or power transfer between two short electric dipole antennas in free space is derived. When the antennas are above and parallel to a perfectly conducting plane, the radio gain approaches a constant as the antennas approach the ground. As the antennas are raised the radio gain is approximately proportional to the square of the product of the antenna heights. At greater heights the interference between the direct and reflected wave causes the radio gain to oscillate. At low antenna heights on vertical polarization the radio gain is the same as in free space. As the antennas are raised it increases and oscillates about four times its free space value. At greater heights the oscillation of the radio gain has greater amplitude. The maxima on vertical polarization occur at the same height as the minima on horizontal polarization and vice versa. For antennas above an imperfectly conducting plane, the radio gain decreases indefinitely as the antennas are lowered and depends upon the polarization and whether the antennas are electric or magnetic dipoles. Numerical values are given for <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\sigma\lambda = 1</tex> . Vertical loop antennas give greater radio gain for ground wave propagation.
Cloning and Characterization of a Novel Mouse Siglec, mSiglec-F (2001)

A novel mouse Siglec (mSiglec-F) belonging to the subfamily of Siglec-3-related Siglecs has been cloned and characterized. Unlike most human Siglec-3 (hSiglec-3)-related Siglecs with promiscuous linkage specificity, mSiglec-F shows a strong preference for alpha2-3-linked sialic acids. It is predominantly expressed in immature cells of the myelomonocytic lineage and in a subset of CD11b (Mac-1)-positive cells in some tissues. As with previously cloned Siglec-3-related mSiglecs, the lack of strong sequence similarity to a singular hSiglec made identification of the human ortholog difficult. We therefore conducted a comprehensive comparison of Siglecs between the human and mouse genomes. The mouse genome contains eight Siglec genes, whereas the human genome contains 11 Siglec genes and a Siglec-like gene. Although a one-to-one orthologous correspondence between human and mouse Siglecs 1, 2, and 4 is confirmed, the Siglec-3-related Siglecs showed marked differences between human and mouse. We found only four Siglec genes and two pseudogenes in the mouse chromosome 7 region syntenic to the Siglec-3-related gene cluster on human chromosome 19, which, in contrast, contains seven Siglec genes, a Siglec-like gene, and thirteen pseudogenes. Although analysis of gene maps and exon structures allows tentative assignments of mouse-human Siglec ortholog pairs, the possibility of unequal genetic recombination makes the assignments inconclusive. We therefore support a temporary lettered nomenclature for additional mouse Siglecs. Current information suggests that mSiglec-F is likely a hSiglec-5 ortholog. The previously reported mSiglec-3/CD33 and mSiglec-E/MIS are likely orthologs of hSiglec-3 and hSiglec-9, respectively. The other Siglec-3-like gene in the cluster (mSiglec-G) is probably a hSiglec-10 ortholog. Another mouse gene (mSiglec-H), without an apparent human ortholog, lies outside of the cluster. Thus, although some duplications of Siglec-3-related genes predated separation of the primate and rodent lineages (about 80-100 million years ago), this gene cluster underwent extensive duplications in the primate lineage thereafter.
Generation of Human Induced Pluripotent Stem Cells from Peripheral Blood Using the STEMCCA Lentiviral Vector (2012)

Through the ectopic expression of four transcription factors, Oct4, Klf4, Sox2 and cMyc, human somatic cells can be converted to a pluripotent state, generating so-called induced pluripotent stem cells (iPSCs)(1-4). Patient-specific iPSCs lack the ethical concerns that surround embryonic stem cells (ESCs) and would bypass possible immune rejection. Thus, iPSCs have attracted considerable attention for disease modeling studies, the screening of pharmacological compounds, and regenerative therapies(5). We have shown the generation of transgene-free human iPSCs from patients with different lung diseases using a single excisable polycistronic lentiviral Stem Cell Cassette (STEMCCA) encoding the Yamanaka factors(6). These iPSC lines were generated from skin fibroblasts, the most common cell type used for reprogramming. Normally, obtaining fibroblasts requires a skin punch biopsy followed by expansion of the cells in culture for a few passages. Importantly, a number of groups have reported the reprogramming of human peripheral blood cells into iPSCs(7-9). In one study, a Tet inducible version of the STEMCCA vector was employed(9), which required the blood cells to be simultaneously infected with a constitutively active lentivirus encoding the reverse tetracycline transactivator. In contrast to fibroblasts, peripheral blood cells can be collected via minimally invasive procedures, greatly reducing the discomfort and distress of the patient. A simple and effective protocol for reprogramming blood cells using a constitutive single excisable vector may accelerate the application of iPSC technology by making it accessible to a broader research community. Furthermore, reprogramming of peripheral blood cells allows for the generation of iPSCs from individuals in which skin biopsies should be avoided (i.e. aberrant scarring) or due to pre-existing disease conditions preventing access to punch biopsies. Here we demonstrate a protocol for the generation of human iPSCs from peripheral blood mononuclear cells (PBMCs) using a single floxed-excisable lentiviral vector constitutively expressing the 4 factors. Freshly collected or thawed PBMCs are expanded for 9 days as described(10,11) in medium containing ascorbic acid, SCF, IGF-1, IL-3 and EPO before being transduced with the STEMCCA lentivirus. Cells are then plated onto MEFs and ESC-like colonies can be visualized two weeks after infection. Finally, selected clones are expanded and tested for the expression of the pluripotency markers SSEA-4, Tra-1-60 and Tra-1-81. This protocol is simple, robust and highly consistent, providing a reliable methodology for the generation of human iPSCs from readily accessible 4 ml of blood.
Ligand-induced internalization of neurotensin in transfected COS-7 cells: differential intracellular trafficking of ligand and receptor (2000)

The neuropeptide neurotensin (NT) is known to be internalized in a receptor-mediated fashion into its target cells. To gain insight into the mechanisms underlying this process, we monitored in parallel the migration of the NT1 neurotensin receptor subtype and a fluorescent analog of NT (fluo-NT) in COS-7 cells transfected with a tagged NT1 construct. Fluo-NT internalization was prevented by hypertonic sucrose, potassium depletion and cytosol acidification, demonstrating that it proceeded via clathrin-coated pits. Within 0-30 minutes, fluo-NT accumulated together with its receptor in Acridine Orange-positive, acidic organelles. These organelles concentrated transferrin and immunostained positively for rab 5A, therefore they were early endosomes. After 30-45 minutes, the ligand and its receptor no longer colocalized. Fluo-NT was first found in rab 7-positive late endosomes and later in a nonacidic juxtanuclear compartment identified as the Trans-Golgi Network (TGN) by virtue of its staining for syntaxin 6. This juxtanuclear compartment also stained positively for rab 7 and for the TGN/pericentriolar recycling endosome marker rab 11, suggesting that the ligand could have been recruited to the TGN from either late or recycling endosomes. By that time, internalized receptors were detected in Lamp-1-immunoreactive lysosomes. These results demonstrate that neurotensin/NT1 receptor complexes follow a recycling cycle that is unique among the G protein-coupled receptors studied to date, and provide the first evidence for the targeting of a nonendogenous protein from endosomes to the TGN.
The Wnt Signaling Pathway in Retinal Degenerations (2005)

The retina is a complex tissue composed of multiple interconnected cell layers, highly specialized for transforming light and color into electrical signals perceived by the brain. Damage or death of the primary light-sensing cells, the photoreceptors, results in devastating effects on vision. Despite the identification of numerous mutations that cause inherited retinal degenerations, the cellular and molecular mechanisms leading from the primary mutations to photoreceptor apoptosis are not understood. Wnt signaling has essential regulatory functions in a wide variety of critical developmental processes. Our research and others' have suggested that the Wnt pathway may be involved in retinal degeneration. Wnt ligands regulate developmental death of Drosophila photoreceptors, dysregulated Wnt signaling is involved in neuronal degeneration elsewhere in the central nervous system and Wnts control the expression of pro-survival growth factors in mammalian tissues. Additionally, altered expression of Wnt pathway genes, including the anti-apoptotic Wnt signaling regulator Dickkopf 3 (Dkk3), were observed during photoreceptor loss. This review examines the evidence and develops a model proposing a pro-survival role for Wnt signaling during photoreceptor injury. Because manipulating Wnt signaling has been demonstrated to have therapeutic potential for the treatment of Alzheimers disease, understanding the involvement of Wnts in photoreceptor death will determine whether targeting the Wnt pathway should also be considered as a possible therapeutic strategy for retinal degenerations.