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Articles 31 - 56 of 56
Full-Text Articles in Medicine and Health Sciences
Cd40-Cd40 Ligand Interactions In Experimental Allergic Encephalomyelitis And Multiple Sclerosis., Koen Gerritse, Jon D. Laman, Randolph J. Noelle, Alejandro Aruffo
Cd40-Cd40 Ligand Interactions In Experimental Allergic Encephalomyelitis And Multiple Sclerosis., Koen Gerritse, Jon D. Laman, Randolph J. Noelle, Alejandro Aruffo
Dartmouth Scholarship
We investigated the role of CD40-CD40 ligand (CD40L) interactions in multiple sclerosis (MS) and experimental allergic encephalomyelitis (EAE). Activated helper T cells expressing CD40L (gp39) surface protein were found in MS patient brain sections, but not in brain tissue sections of normal controls or patients with other neurological disease. CD40L-positive cells were co-localized with CD40-bearing cells in active lesions (perivascular infiltrates). Most of these CD40-bearing cells proved to be of the monocytic lineage (macrophages or microglial cells), and relatively few were B cells. To functionally evaluate CD40-CD40L interactions, EAE was elicited in mice by means of proteolipid-peptide immunization. Treatment with …
Antisense Oligodeoxynucleotide Inhibition Of A Swelling-Activated Cation Channel In Osteoblast-Like Osteosarcoma Cells., Randall L. Duncan, Neil Kizer, Elizabeth L. Barry, Peter P A Friedman, Keith A. Hruska
Antisense Oligodeoxynucleotide Inhibition Of A Swelling-Activated Cation Channel In Osteoblast-Like Osteosarcoma Cells., Randall L. Duncan, Neil Kizer, Elizabeth L. Barry, Peter P A Friedman, Keith A. Hruska
Dartmouth Scholarship
By patch-clamp analysis, we have shown that chronic, intermittent mechanical strain (CMS) increases the activity of stretch-activated cation channels of osteoblast-like UMR-106.01 cells. CMS also produces a swelling-activated whole-cell conductance (Gm) regulated by varying strain levels. We questioned whether the swelling-activated conductance was produced by stretch-activated cation channel activity. We have identified a gene involved in the increase in conductance by using antisense oligodeoxynucleotides (ODN) derived from the alpha 1-subunit genes of calcium channels found in UMR-106.01 cells (alpha1S, alpha1C, and alpha1D). We demonstrate that alpha 1C antisense ODNs abolish the increase in Gm in response to hypotonic swelling following …
A Recombinant Inwardly Rectifying Potassium Channel Coupled To Gtp-Binding Proteins, Kim W. Chan, M. Noelle Langan, Jin Liang Sui, J. Ashot Kozak, Amanda Pabon, John A. A. Ladias, Diomedes E. Logothetis
A Recombinant Inwardly Rectifying Potassium Channel Coupled To Gtp-Binding Proteins, Kim W. Chan, M. Noelle Langan, Jin Liang Sui, J. Ashot Kozak, Amanda Pabon, John A. A. Ladias, Diomedes E. Logothetis
Neuroscience, Cell Biology & Physiology Faculty Publications
GTP-binding (G) proteins have been shown to mediate activation of inwardly rectifying potassium (K+) channels in cardiac, neuronal and neuroendocrine cells. Here, we report functional expression of a recombinant inwardly rectifying channel which we call KGP (or hpKir3.4), to signify that it is K+ selective, G-protein-gated and isolated from human pancreas. KGP expression in Xenopus oocytes resulted in sizeable basal (or agonist-independent) currents while coexpression with a G-protein-linked receptor, yielded additional agonist-induced currents. Coexpression of KGP and hGIRK1 (a human brain homolog of GIRK1/Kir3.1) produced much larger basal currents than those observed with KGP or hGIRK1 alone, and upon coexpression …
Update - February 1996, Loma Linda University Center For Christian Bioethics
Update - February 1996, Loma Linda University Center For Christian Bioethics
Update
In this issue:
-- Adventism and Assisted Procreation: Excerpts from a panel discussion at LLU
-- Adventist Guidelines on Assisted Procreation
-- LLU offers Masters of Arts in Biomedical and Clinical Ethics
Distinct Cis-Acting Elements Mediate Clock, Light, And Developmental Regulation Of The Neurospora Crassa Eas (Ccg-2) Gene., Deborah Bell-Pedersen, Jay C. Dunlap, Jennifer J. Loros
Distinct Cis-Acting Elements Mediate Clock, Light, And Developmental Regulation Of The Neurospora Crassa Eas (Ccg-2) Gene., Deborah Bell-Pedersen, Jay C. Dunlap, Jennifer J. Loros
Dartmouth Scholarship
The Neurospora crassa eas (ccg-2) gene, which encodes a fungal hydrophobin, is transcriptionally regulated by the circadian clock. In addition, eas (ccg-2) is positively regulated by light and transcripts accumulate during asexual development. To sort out the basis of this complex regulation, deletion analyses of the eas (ccg-2) promoter were carried out to localize the cis-acting elements mediating clock, light, and developmental control. The primary sequence determinants of a positive activating clock element (ACE) were found to reside in a 45-bp region, just upstream from the TATA box. Using a novel unregulated promoter/reporter system developed for this study, we show …
Gtpase-Deficient G Alpha 16 And G Alpha Q Induce Pc12 Cell Differentiation And Persistent Activation Of Cjun Nh2-Terminal Kinases., Lynn E. Heasley, Brooke Storey, Gary R. Fanger, Laura Butterfield, J Zamarripa, D Blumberg, R A. Maue
Gtpase-Deficient G Alpha 16 And G Alpha Q Induce Pc12 Cell Differentiation And Persistent Activation Of Cjun Nh2-Terminal Kinases., Lynn E. Heasley, Brooke Storey, Gary R. Fanger, Laura Butterfield, J Zamarripa, D Blumberg, R A. Maue
Dartmouth Scholarship
Persistent stimulation of specific protein kinase pathways has been proposed as a key feature of receptor tyrosine kinases and intracellular oncoproteins that signal neuronal differentiation of rat pheochromocytoma (PC12) cells. Among the protein serine/threonine kinases identified to date, the p42/44 mitogen-activated protein (MAP) kinases have been highlighted for their potential role in signalling PC12 cell differentiation. We report here that retrovirus-mediated expression of GTPase-deficient, constitutively active forms of the heterotrimeric Gq family members, G alpha qQ209L and G alpha 16Q212L, in PC12 cells induces neuronal differentiation as indicated by neurite outgrowth and the increased expression of voltage-dependent sodium channels. Differentiation …
Physicochemical And Metabolic Basis For The Differing Neurotoxicity Of The Pyrrolizidine Alkaloids, Trichodesmine And Monocrotaline, R. J. Huxtable, C. C. Yan, S. Wild, S. Maxwell, Roland Cooper
Physicochemical And Metabolic Basis For The Differing Neurotoxicity Of The Pyrrolizidine Alkaloids, Trichodesmine And Monocrotaline, R. J. Huxtable, C. C. Yan, S. Wild, S. Maxwell, Roland Cooper
Roland A. Cooper
2,4-Disulfonyl Phenyl Butyl Nitrone, Its Salt And Their Use As Pharmaceuticals Free Radical Traps, John M. Carney
2,4-Disulfonyl Phenyl Butyl Nitrone, Its Salt And Their Use As Pharmaceuticals Free Radical Traps, John M. Carney
Pharmacology and Nutritional Sciences Faculty Patents
2,4-disulfonyl α-phenyl-tert-butyl nitrone and its pharmaceutically acceptable salts are disclosed. These materials are useful as pharmaceutical agents for oral or intravenous administration to patients suffering from acute central nervous system oxidation as occurs in a stroke or from gradual central nervous system oxidation which can exhibit itself as progressive central nervous system function loss.
The Effect Of Estrogen In A Murine Model Of Peritoneal Adhesion Formation, Michelle Rene Frazier-Jessen
The Effect Of Estrogen In A Murine Model Of Peritoneal Adhesion Formation, Michelle Rene Frazier-Jessen
Dissertations
No abstract provided.
A Thermodynamic Study Of Electroneutral K-Cl Cotransport In Ph- And Volume-Clamped Low K Sheep Erythrocytes With Normal And Low Internal Magnesium, Peter K. Lauf, Norma C. Adragna
A Thermodynamic Study Of Electroneutral K-Cl Cotransport In Ph- And Volume-Clamped Low K Sheep Erythrocytes With Normal And Low Internal Magnesium, Peter K. Lauf, Norma C. Adragna
Pharmacology and Toxicology Faculty Publications
Swelling-Induced human erythrocyte K-Cl cotransport is membrane potential independent and capable of uphill transport. However, a complete thermodynamic analysis of basal and stimulated K-Cl cotransport, at constant cell volume, is missing, This study was performed in low K sheep red blood cells before and after reducing cellular free Mg into the nanomolar range with the divalent cation ionophore A23187 and a chelator, an intervention known to stimulate K-Cl cotransport. The anion exchange inhibitor 4,4'diisothiocyanato-2,2'disulfonic stilbene was used to clamp intracellular pH and Cl or NO3 concentrations. Cell volume was maintained constant as external and internal pH differed by more than …
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
Bovine Cell Line Resistant To In Vtro Infection By Bovine Viral Darrheavirus And All Other Known Pestiviruses, Ruben O. Donis, Eduardo F. Flores
School of Veterinary and Biomedical Sciences: Faculty Publications
Bovine cell line resistant to infection by the pestiviruses Bovine Viral Diarrhea Virus (BVDV), Hog Cholera Virus (HCV) and Border Disease Virus (BDV) and all progeny and mutants thereof. A bovine cell line (CRIB) that is resistant to infection by cytopathic and non-cytopathic BVDV and by other Pestiviruses due to a stable, recessive genetic defect which blocks infection at the level of viral entry.
Uwomj Volume 65, No 2, Spring 1996, Western University
Uwomj Volume 65, No 2, Spring 1996, Western University
University of Western Ontario Medical Journal
An interdisciplinary medical science publication, established in 1930.
Job Accommodation In The Automobile Industry : Addressing The Problem Of Lateral Epicondylitis, Thanigaivel Ashwin Raj
Job Accommodation In The Automobile Industry : Addressing The Problem Of Lateral Epicondylitis, Thanigaivel Ashwin Raj
Theses and Dissertations (ETD)
Cumulative trauma disorders are musculoskeletal problems such as carpal tunnel syndrome, rotator cuff tendinitis, and epicondylitis which can affect assembly line workers. The injuries are thought to result from repetitive motions performed under excessive loads in anomalous postures. The project aimed to design, build, install, and evaluate worksite accommodation at the Saturn plant for a worker with right lateral epicondylitis. The goal was to make her fully functional in her original team which required addressing the injurious aspects of the task that caused or aggravated her injury.
A process of observation, interview, and analysis identified “the door mount” operation on …
Neonatal Cranial Ultrasound Abnormalities In Lbw Infants: Relation To Cognitive Outcomes At Age Six, Agnes H. Whitaker, Judy F. Feldman, Ronan Van Rossem, Irvin Sam Schonfeld, Jennifer A. Pinto-Martin, Carolyn Torre, Suzannah R. Blumenthal, Nigel S. Paneth
Neonatal Cranial Ultrasound Abnormalities In Lbw Infants: Relation To Cognitive Outcomes At Age Six, Agnes H. Whitaker, Judy F. Feldman, Ronan Van Rossem, Irvin Sam Schonfeld, Jennifer A. Pinto-Martin, Carolyn Torre, Suzannah R. Blumenthal, Nigel S. Paneth
Publications and Research
bjective: To assess the independent relation of neonatal cranial ultrasound (US) abnormalities in low birth weight (LBW) infants to cognitive outcomes at 6 years of age.
Design: Prospective cohort study.
Sample and Methods: Six-year follow-up data were obtained on a regional birth cohort of LBW infants (< 2 kg) systematically screened as neonates with serial US. US abnormalities were dichotomized into isolated germinal matrix/intraventricular hemorrhage (GM/IVH) and parenchymal lesions/ventricular enlargement (PL/VE). Global cognitive outcomes (mental retardation, borderline intelligence, and normal intelligence) and selected specific cognitive abilities were assessed at 6 years of age with standardized instruments. Multivariate techniques were used to assess the effects of US independent of maternal social …
Effect Of Neurotrophic Factors On Cholinergic Neurons In The Septo-Hippocampal Pathway Of Normal And Af64a Treated Rats, Christopher Andrew Willson
Effect Of Neurotrophic Factors On Cholinergic Neurons In The Septo-Hippocampal Pathway Of Normal And Af64a Treated Rats, Christopher Andrew Willson
Dissertations
No abstract provided.
Top-Down Cascade From A Bitrophic Predator In An Old-Field Community, Matthew D. Moran, Thomas P. Rooney, L. E. Hurd
Top-Down Cascade From A Bitrophic Predator In An Old-Field Community, Matthew D. Moran, Thomas P. Rooney, L. E. Hurd
Biological Sciences Faculty Publications
We tested the hypothesis that a bitrophic (third and fourth level) arthropod predator can exert a cascading, top-down influence on other arthropods and plants in an early successional old field. First-stadium mantids, Tenodera sinensis, were added to replicated open-field plots in numbers corresponding to naturally occurring egg hatch density and allowed to remain for ≈ 2 mo. Sticky-trap dispersal barriers around both control and mantid-addition plots allowed us to monitor emigration of arthropods continuously during the experiment. Biomass of herbivores, carnivores, and plants, and abundances of arthropod taxa within plots were determined at the beginning, middle, and end of …
Asct-1 Is A Neutral Amino Acid Exchanger With Chloride Channel Activity, Noa Zerangue, Michael Kavanaugh
Asct-1 Is A Neutral Amino Acid Exchanger With Chloride Channel Activity, Noa Zerangue, Michael Kavanaugh
Biomedical and Pharmaceutical Sciences Faculty Publications
The ubiquitous transport activity known as system ASC is characterized by a preference for small neutral amino acids including alanine, serine, and cysteine. ASCT-1 and ASCT-2, recently cloned transporters exhibiting system ASC-like selectivity, are members of a major amino acid transporter family that includes a number of glutamate transporters. Here we show that ASCT1 functions as an electroneutral exchanger that mediates negligible net amino acid flux. The electrical currents previously shown to be associated with ASCT1-mediated transport result from activation of a thermodynamically uncoupled chloride conductance with permeation properties similar to those described for the glutamate transporter subfamily. Like glutamate …
Kinetics And Stoichiometry Of A Proton/Myo-Inositol Cotransporter, Elizabeth M. Klamo, Mark E. Drew, Scott M. Landfear, Michael Kavanaugh
Kinetics And Stoichiometry Of A Proton/Myo-Inositol Cotransporter, Elizabeth M. Klamo, Mark E. Drew, Scott M. Landfear, Michael Kavanaugh
Biomedical and Pharmaceutical Sciences Faculty Publications
Voltage clamp recording was used to measure steady-state and presteady-state currents mediated by a myo-inositol transporter cloned from Leishmania donovani and expressed in Xenopus oocytes. Application of myo-inositol resulted in inward currents, which did not require external sodium and which were increased by increasing the extracellular proton concentration and by membrane hyperpolarization. Alkalinization of the extracellular space occurred concomitantly with myo-inositol influx. Correlation of membrane currents with radiolabeled myo-inositol flux revealed that one positive charge is translocated with each molecule of myo-inositol, consistent with cotransport of one proton. The transport concentration dependence on both species …
Analysis Of The Effects Of Overexpression Of Metallothionein-I In Transgenic Mice On The Reproductive Toxicology Of Cadmium., T Dalton, Kai Fu, G C Enders, R D Palmiter, G K Andrews
Analysis Of The Effects Of Overexpression Of Metallothionein-I In Transgenic Mice On The Reproductive Toxicology Of Cadmium., T Dalton, Kai Fu, G C Enders, R D Palmiter, G K Andrews
Journal Articles: Pathology and Microbiology
Exposure to low levels of cadmium reduces fertility. In male mice spermatogenesis is highly sensitive to cadmium, whereas in females the peri-implantation period of pregnancy is sensitive. To examine the potential roles of the cadmium-binding protein, metallothionein (MT), in the reproductive toxicology of cadmium, we examined a transgenic mouse strain that overexpresses metallothionein-I (MT-I). These mice had dramatically increased steady-state levels of MT-I mRNA and MT in the testes and in the female reproductive tract during the peri-implantation period of pregnancy, and this overexpression occurred in a cell-specific and temporally regulated manner similar to that of the endogenous MT-I gene. …
Choice, Conscience, And Context, Mary Crossley
Choice, Conscience, And Context, Mary Crossley
Articles
Building on Professor Michael H. Shapiro's critique of arguments that some uses of new reproductive technologies devalue and use persons inappropriately (which is part of a Symposium on New Reproductive Technologies), this work considers two specific practices that increasingly are becoming part of the new reproductive landscape: selective reduction of multiple pregnancy and prenatal genetic testing to enable selective abortion. Professor Shapiro does not directly address either practice, but each may raise troubling questions that sound suspiciously like the arguments that Professor Shapiro sought to discredit. The concerns that selective reduction and prenatal genetic screening raise, however, relate not to …
Collection Of Urine For Culture., James S. Jaffe Md
Collection Of Urine For Culture., James S. Jaffe Md
Department of Medicine
No abstract provided.
Health Professions Division Academic Year 1996-1997, Nova Southeastern University
Health Professions Division Academic Year 1996-1997, Nova Southeastern University
Health Professions Divisions Course Catalogs and Course Descriptions
No abstract provided.
Race And The New Reproduction, Dorothy E. Roberts
Race And The New Reproduction, Dorothy E. Roberts
All Faculty Scholarship
No abstract provided.
A Feminist Social Justice Approach To Reproduction-Assisting Technologies: A Case Study On The Limits Of Liberal Theory, Joan C. Callahan, Dorothy E. Roberts
A Feminist Social Justice Approach To Reproduction-Assisting Technologies: A Case Study On The Limits Of Liberal Theory, Joan C. Callahan, Dorothy E. Roberts
All Faculty Scholarship
No abstract provided.
Microevolutionary Patterns And Molecular Markers: The Genetics Of Geographic Variation In Ascaris Suum, Steven A. Nadler
Microevolutionary Patterns And Molecular Markers: The Genetics Of Geographic Variation In Ascaris Suum, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Molecular markers have been used only rarely to characterize the population genetic structure of nematodes. Published studies have suggested that different taxa may show distinct genetic architectures. Isoenzyme and RAPD markers have been used to investigate geographic variation of Ascaris suum at the level of infrapopulations (nematodes within individual hosts), within localities, and among geographic regions. Independent estimates of genetic differentiation among population samples based on isoenzyme and RAPD data showed similar patterns and substantial correlation. Heterozygote deficiencies within infrapopulations and large values for inbreeding coefficients among infrapopulations suggested that the composition of these populations was not consistent with a …
Epilepsy, Michael Rogawski