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Purpura M, Jäger R, Joy JM, Lowery RP, Moore JD, Wilson JM. Effect of oral administration of soy-derived phosphatidic acid on concentrations of phosphatidic acid and lyso-phosphatidic acid molecular species in human plasma. J Int Soc Sports Nutr 2013. [PMCID: PMC4043675 DOI: 10.1186/1550-2783-10-s1-p22] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sharma VK, Moore JD, Chattopadhyay MK, Morrison K, Cohen LF, Roy SB. A scanning Hall probe imaging study of the field induced martensite-austenite phase transition in Ni50Mn34In16 alloy. J Phys Condens Matter 2010; 22:016008. [PMID: 21386243 DOI: 10.1088/0953-8984/22/1/016008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The martensite to austenite phase transition in the off-stoichiometric Heusler alloy Ni(50)Mn(34)In(16) can be induced both by temperature change and by application of a magnetic field. We have used scanning Hall probe imaging to study the magnetic field induced martensite-austenite phase transition. The study provides clear visual evidence of the coexistence of the martensite and austenite phases across this field induced transition in both increasing and decreasing magnetic fields. Clear evidence of thermomagnetic history effects associated with the martensite-austenite phase transition is also obtained. Quantitative analysis of the magnetic field dependence of the volume fraction of the austenite phase in Ni(50)Mn(34)In(16) shows evidence of a nucleation and growth mechanism across the field induced martensite-austenite phase transition. The local M-H loops constructed from the Hall images indicate the presence of a landscape of the critical magnetic field (for the field induced transition) distributed over the sample volume and thus confirm the disorder influenced nature of this first-order magnetic phase transition.
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Affiliation(s)
- V K Sharma
- Magnetic and Superconducting Materials Section, Raja Ramanna Centre for Advanced Technology, Indore, India
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Branford WR, Yates KA, Barkhoudarov E, Moore JD, Morrison K, Magnus F, Miyoshi Y, Sousa PM, Conde O, Silvestre AJ, Cohen LF. Coexistence of universal and topological anomalous hall effects in metal CrO2 thin films in the dirty limit. Phys Rev Lett 2009; 102:227201. [PMID: 19658897 DOI: 10.1103/physrevlett.102.227201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Indexed: 05/28/2023]
Abstract
The scaling exponent of 1.6 between anomalous Hall and longitudinal conductivity, characteristic of the universal Hall mechanism in dirty-metal ferromagnets, emerges from a series of CrO2 films as we systematically increase structural disorder. Magnetic disorder in CrO2 increases with temperature and this drives a separate topological Hall mechanism. We find that these terms are controlled discretely by structural and magnetic defect populations, and their coexistence leads to apparent divergence from exponent 1.6, suggesting that the universal term is more prevalent than previously realized.
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Affiliation(s)
- W R Branford
- Physics Department, Blackett Laboratory, Imperial College London, Prince Consort Road, SW7 2BZ, United Kingdom
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Miyoshi Y, Morrison K, Moore JD, Caplin AD, Cohen LF. Heat capacity and latent heat measurements of CoMnSi using a microcalorimeter. Rev Sci Instrum 2008; 79:074901. [PMID: 18681727 DOI: 10.1063/1.2960556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A new method of utilizing a commercial silicon nitride membrane calorimeter to measure the latent heat at a first order phase transition is presented. The method is a direct measurement of the thermoelectric voltage jump induced by the latent heat, in a thermally isolated system ideally suited for single crystal and small microgram samples. We show that when combined with the ac calorimetry technique previously developed, the resultant thermal measurement capabilities are extremely powerful. We demonstrate the applicability of the combined method with measurements on a 100 microm size fragment of CoMnSi exhibiting a sizable magnetocaloric effect near room temperature, and obtain good agreement with previously reported values on bulk samples.
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Affiliation(s)
- Y Miyoshi
- Blackett Laboratory, Imperial College London, London, United Kingdom
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Moore JD, Allaby RG. TreeMos: a high-throughput phylogenomic approach to find and visualize phylogenetic mosaicism. Bioinformatics 2008; 24:717-8. [PMID: 18204056 DOI: 10.1093/bioinformatics/btn027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
SUMMARY TreeMos is a novel high-throughput graphical analysis application that allows the user to search for phylogenetic mosaicism among one or more DNA or protein sequence multiple alignments and additional unaligned sequences. TreeMos uses a sliding window and local alignment algorithm to identify the nearest neighbour of each sequence segment, and visualizes instances of sequence segments whose nearest neighbour is anomalous to that identified using the global alignment. Data sets can include whole genome sequences allowing phylogenomic analyses in which mosaicism may be attributed to recombination between any two points in the genome. TreeMos can be run from the command line, or within a web browser allowing the relationships between taxa to be explored by drill-through. AVAILABILITY http://www2.warwick.ac.uk/fac/sci/whri/research/archaeobotany.
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Affiliation(s)
- J D Moore
- Warwick HRI, University of Warwick, Warwick, CV35 9EF, UK.
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Moore JD, Acosta EP, Johnson VA, Bassett R, Eron JJ, Fischl MA, Long MC, Kuritzkes DR, Sommadossi JP. Intracellular Nucleoside Triphosphate Concentrations in HIV-Infected Patients on Dual Nucleoside Reverse Transcriptase Inhibitor Therapy. Antivir Ther 2007. [DOI: 10.1177/135965350701200615] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Intracellular nucleoside reverse transcriptase inhibitor triphosphate (NRTI-TP) concentrations are crucial in suppressing HIV replication. Little is known about how commonly used dual-NRTI regimens affect the intracellular levels of NRTI-TPs, the active form of these drugs. This study investigates the effect of dual-NRTI therapy in intracellular NRTI-TP levels. Methods NRTI and NRTI-TP concentrations were evaluated in HIV-infected patients receiving either lamivudine (3TC) and stavudine (d4T) or lamivudine with zidovudine (ZDV); NRTI and NRTI-TP concentrations were determined using a validated HPLC/MS/MS method. Plasma HIV-1 RNA levels were determined at baseline and monthly to examine the relationship between NRTI-TP concentrations and plasma HIV-1 RNA. Results Forty-one subjects completed the study. 3TC-TP significantly increased between day 1 and week 28 from 1.48 to 5.00 pmol/106 peripheral blood mononuclear cells (PBMC; P<0.0001). NRTI-TP concentrations for d4T and ZDV did not significantly increase, with values at week 28 of 0.011 and 0.02 pmol/106 PBMC, respectively. Mean NRTI-TP/plasma ratios were 3%, 0.007% and 0.05% for 3TC, d4T and ZDV, respectively. Linear relationships were observed between ZDV- and 3TC-TP and changes in plasma HIV-1 RNA. Conclusion Of the three drugs studied, only 3TC-TP levels increased significantly between day 1 and week 28. ZDV-TP and 3TC-TP levels were unaffected by dual-NRTI therapy relative to monotherapy, regardless of the combination (3TC-ZDV or 3TC-d4T). Intracellular levels of d4T-TP were similar to previous reports for dual-NRTI therapy; however, in the case of d4T, these values appear lower than those achieved with d4T monotherapy.
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Affiliation(s)
- Jeff D Moore
- University of Alabama at Birmingham, Division of Clinical Pharmacology, Birmingham, AL, USA
- Current position: Avanti Polar Lipids, Inc., Alabaster, AL, USA
| | - Edward P Acosta
- University of Alabama at Birmingham, Division of Clinical Pharmacology, Birmingham, AL, USA
| | - Victoria A Johnson
- Birmingham Veterans Affairs Medical Centre and University of Alabama at Birmingham School of Medicine, Division of Infectious Diseases, Birmingham, AL, USA
| | - Roland Bassett
- Harvard School of Public Health, Boston, MA, USA
- Current position: M.D. Anderson Cancer Centre, Houston, TX, USA
| | - Joseph J Eron
- University of North Carolina at Chapel Hill, NC, USA
| | | | - Mary C Long
- University of Alabama at Birmingham, Division of Clinical Pharmacology, Birmingham, AL, USA
| | | | - Jean-Pierre Sommadossi
- University of Alabama at Birmingham, Division of Clinical Pharmacology, Birmingham, AL, USA
- Current position: Idenix Pharmaceuticals, Cambridge, MA, USA
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Moore JD, Acosta EP, Johnson VA, Bassett R, Eron JJ, Fischl MA, Long MC, Kuritzkes DR, Sommadossi JP. Intracellular nucleoside triphosphate concentrations in HIV-infected patients on dual nucleoside reverse transcriptase inhibitor therapy. Antivir Ther 2007; 12:981-986. [PMID: 17926654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Intracellular nucleoside reverse transcriptase inhibitor triphosphate (NRTI-TP) concentrations are crucial in suppressing HIV replication. Little is known about how commonly used dual-NRTI regimens affect the intracellular levels of NRTI-TPs, the active form of these drugs. This study investigates the effect of dual-NRTI therapy in intracellular NRTI-TP levels. METHODS NRTI and NRTI-TP concentrations were evaluated in HIV-infected patients receiving either lamivudine (3TC) and stavudine (d4T) or lamivudine with zidovudine (ZDV); NRTI and NRTI-TP concentrations were determined using a validated HPLC/MS/MS method. Plasma HIV-1 RNA levels were determined at baseline and monthly to examine the relationship between NRTI-TP concentrations and plasma HIV-1 RNA. RESULTS Forty-one subjects completed the study. 3TC-TP significantly increased between day 1 and week 28 from 1.48 to 5.00 pmol/10(6) peripheral blood mononuclear cells (PBMC; P < 0.0001). NRTI-TP concentrations for d4T and ZDV did not significantly increase, with values at week 28 of 0.011 and 0.02 pmol/10(6) PBMC, respectively. Mean NRTI-TP/plasma ratios were 3%, 0.007% and 0.05% for 3TC, d4T and ZDV, respectively. Linear relationships were observed between ZDV- and 3TC-TP and changes in plasma HIV-1 RNA. CONCLUSION Of the three drugs studied, only 3TC-TP levels increased significantly between day 1 and week 28. ZDV-TP and 3TC-TP levels were unaffected by dual-NRTI therapy relative to monotherapy, regardless of the combination (3TC-ZDV or 3TC-d4T). Intracellular levels of d4T-TP were similar to previous reports for dual-NRTI therapy; however, in the case of d4T, these values appear lower than those achieved with d4T monotherapy.
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Affiliation(s)
- Jeff D Moore
- University of Alabama at Birmingham, Division of Clinical Pharmacology, Birmingham, AL, USA
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Korepanova A, Moore JD, Nguyen HB, Hua Y, Cross TA, Gao F. Expression of membrane proteins from Mycobacterium tuberculosis in Escherichia coli as fusions with maltose binding protein. Protein Expr Purif 2006; 53:24-30. [PMID: 17275326 PMCID: PMC2684689 DOI: 10.1016/j.pep.2006.11.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2006] [Revised: 11/22/2006] [Accepted: 11/22/2006] [Indexed: 10/23/2022]
Abstract
Sixteen of 22 low molecular weight integral membrane proteins from Mycobacterium tuberculosis with previously poor or undetectable levels of expression were expressed in Escherichia coli as fusions with both the maltose binding protein (MBP) and a His(8)-tag. Sixty-eight percent of targeted proteins were expressed in high yield (>30 mg/L) in soluble and/or inclusion body form. Thrombin cleavage of the MBP fusion protein was successful for 10 of 13 proteins expressed as soluble proteins and for three proteins expressed only as inclusion bodies. The use of autoinduction growth media increased yields over Luria-Bertani (LB) growth media in 75% of the expressed proteins. Expressing integral membrane proteins with yields suitable for structural studies from a set of previously low and non-expressing proteins proved highly successful upon attachment of the maltose binding protein as a fusion tag.
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Affiliation(s)
- A Korepanova
- Abbott Laboratories, Dept. R46Y, Bldg. AP10-LL8, 100 Abbott Park Road, Abbott Park, IL 60064-6098, USA
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Wu X, Kim Y, Sun BC, Moore JD, Shaw WA, Maurer BJ. Liquid chromatography method for quantifying D-threo-1-phenyl-2-palmitoylamino-3-morpholino-1-propanol (D-threo-PPMP) in mouse plasma and liver. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 837:44-8. [PMID: 16716770 DOI: 10.1016/j.jchromb.2006.03.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2005] [Revised: 03/26/2006] [Accepted: 03/29/2006] [Indexed: 10/24/2022]
Abstract
A high-performance liquid chromatography (HPLC) method was developed to measure levels of d-threo-1-phenyl-2-palmitoylamino-3-morpholino-1-propanol (d-threo-PPMP) in mouse plasma and liver. d-threo-PPMP was measured by HPLC with a Luna Pheny-Hexyl column (5 microm, 250 mm x 4.6 mm) employing UV detection at 210 nm using a mobile phase of potassium phosphate buffer (20mM, pH 3.0)-acetonitrile in a 45:55 (v/v) ratio. d-threo-1-phenyl-2-pentadecanoylamino-3-morpholino-1-propanol (PC15MP) was employed as an internal standard (IS). The lower limit of quantitation (LLOQ) was 0.3 microg/ml. The assay was linear over a concentration range of 0.3-10 microg/ml, with acceptable precision and accuracy. Assayed in plasma, the intra- and inter-day validation for all coefficients of variation (R.S.D.%) were found less than 15%. The method was applied to samples from athymic (nu/nu) mice treated with d-threo-PPMP by intraperitoneal injection. d-threo-PPMP levels of approximately 10-20 microg/ml ( approximately 20-40 microM) in plasma and approximately 45 microg/g in liver were obtained. The present method can be used to quantify d-threo-PPMP in mice for bioavailability and dose-response studies.
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Affiliation(s)
- Xiaqin Wu
- Division of Hematology-Oncology, Childrens Hospital Los Angeles, Los Angeles, CA 90027, USA
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Raetz CRH, Garrett TA, Reynolds CM, Shaw WA, Moore JD, Smith DC, Ribeiro AA, Murphy RC, Ulevitch RJ, Fearns C, Reichart D, Glass CK, Benner C, Subramaniam S, Harkewicz R, Bowers-Gentry RC, Buczynski MW, Cooper JA, Deems RA, Dennis EA. Kdo2-Lipid A of Escherichia coli, a defined endotoxin that activates macrophages via TLR-4. J Lipid Res 2006; 47:1097-111. [PMID: 16479018 DOI: 10.1194/jlr.m600027-jlr200] [Citation(s) in RCA: 182] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The LIPID MAPS Consortium (www.lipidmaps.org) is developing comprehensive procedures for identifying all lipids of the macrophage, following activation by endotoxin. The goal is to quantify temporal and spatial changes in lipids that occur with cellular metabolism and to develop bioinformatic approaches that establish dynamic lipid networks. To achieve these aims, an endotoxin of the highest possible analytical specification is crucial. We now report a large-scale preparation of 3-deoxy-D-manno-octulosonic acid (Kdo)(2)-Lipid A, a nearly homogeneous Re lipopolysaccharide (LPS) sub-structure with endotoxin activity equal to LPS. Kdo(2)-Lipid A was extracted from 2 kg cell paste of a heptose-deficient Escherichia coli mutant. It was purified by chromatography on silica, DEAE-cellulose, and C18 reverse-phase resin. Structure and purity were evaluated by electrospray ionization/mass spectrometry, liquid chromatography/mass spectrometry and (1)H-NMR. Its bioactivity was compared with LPS in RAW 264.7 cells and bone marrow macrophages from wild-type and toll-like receptor 4 (TLR-4)-deficient mice. Cytokine and eicosanoid production, in conjunction with gene expression profiling, were employed as readouts. Kdo(2)-Lipid A is comparable to LPS by these criteria. Its activity is reduced by >10(3) in cells from TLR-4-deficient mice. The purity of Kdo(2)-Lipid A should facilitate structural analysis of complexes with receptors like TLR-4/MD2.
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Abstract
The advances made in the 1980s and 1990s have yielded many advances in the diagnosis and treatment of depression and dysthymia. Skill of the clinician is important in sorting out the diagnosis, taking care to consider the various medical conditions that can cause depression or disguise themselves as depression. Depressive disorders are highly treatable conditions. Clinicians must overcome the stigma associated with these disorders to alleviate the pain and suffering of those afflicted. The advances in treatment have been enormous and continue to grow. The keys to these treatments lie in continuing to acquire the knowledge to unlock all of the causes of depression. An appendix follows listing medications commonly used in the treatment of depression or for other conditions in patients under treatment for depression.
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Affiliation(s)
- J D Moore
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, USA
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Abstract
RCC1, the chromatin-bound guanine-nucleotide exchange factor (GEF) for the small nuclear GTPase, Ran, is required for coordinating the onset of mitosis with S-phase completion in mammalian cells. Other defects in the Ran-GTPase network also result in disruption of cell-cycle processes such as DNA replication, exit from mitosis and, at least in budding yeast, accurate chromosome segregation. However, the Ran system is now best known for its pivotal role in nucleocytoplasmic transport, where RanGTP is used as a positional flag for the nucleus during interphase. Ran's effectors are the shuttling transport factors, importins and exportins, which facilitate the transit of cargoes between the nucleus and cytoplasm: RanGTP regulates their cargo-binding properties so that they can move their cargo in the correct direction. RanGTP also plays a separate role during mitosis, influencing microtubule polymerisation, possibly specifically in the vicinity of chromosomes. Most recently, Ran has been shown to be crucial for the regeneration of a nuclear envelope after exit from mitosis. So, can the problems with cell-cycle progression and control induced by perturbing the Ran-system be attributed to defects in these three processes? This article examines this issue, concentrating on vertebrate systems. BioEssays 23:77-85, 2001.
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Affiliation(s)
- J D Moore
- Imperial Cancer Research Fund, Clare Hall Laboratories, South Mimms, Herts, EN6 3LD, United Kingdom.
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Moore JD, Valette G, Darque A, Zhou XJ, Sommadossi JP. Simultaneous quantitation of the 5'-triphosphate metabolites of zidovudine, lamivudine, and stavudine in peripheral mononuclear blood cells of HIV infected patients by high-performance liquid chromatography tandem mass spectrometry. J Am Soc Mass Spectrom 2000; 11:1134-1143. [PMID: 11118121 DOI: 10.1016/s1044-0305(00)00178-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A high-performance liquid chromatography (HPLC) method utilizing triple quadrupole mass spectrometry (MS) detection was developed and validated for the simultaneous measurement of the intracellular nucleoside 5'-triphosphate anabolites of zidovudine (ZDV-TP), lamivudine (3TC-TP), and stavudine (d4T-TP). These compounds were extracted from patient peripheral blood mononuclear cells (PBMCs) which are the sites of HIV replication and drug action. Ion-exchange solid phase extraction (SPE) followed by enzymatic digestion with alkaline phosphatase was utilized to yield the measurable nucleoside forms of the nucleotides. Reversed phase C-18 SPE with addition of a nucleoside internal standard, 3'-azido-2',3'-dideoxyuridine (AzdU) allowed for the indirect measurement of the original 5'-triphosphate concentration by HPLC/MS/MS. Quantitation was performed from calibration curves generated from authentic 5'-triphosphate standards spiked in PBMCs from healthy volunteers. Analytical range for the three 5'-triphosphates was equivalent to 50-45,000 pg. Mean interassay accuracies for 3TC-TP, d4T-TP, and ZDV-TP (n > 90) were 99.4%, 100.1%, and 108.0%, respectively. Mean interassay precisions (%C.V.) for 3TC-TP, d4T-TP, and ZDV-TP (n > 90) were 8.8%, 10.4%, and 8.2%, respectively. Recovery of the extraction method was 79.2%, 83.1%, and 98.3% for 3TC-TP, d4T-TP, and ZDV-TP, respectively. This method can be utilized to measure the intracellular 5'-triphosphate levels in HIV infected patients receiving antiretroviral therapy containing the nucleoside reverse transcriptase inhibitors 3TC, d4T, or ZDV.
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Affiliation(s)
- J D Moore
- Division of Clinical Pharmacology, Center for AIDS Research, University of Alabama at Birmingham, 35294, USA
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Abstract
Residential summer camps for youths with diabetes may have a positive effect on glycemic control. Hemoglobin A1c (HbA1c) is considered the best measure of control, but it reflects too long a period to evaluate a camp session. The fructosamine test reflects control over a period of 2-3 wk and may be ideal for this purpose. A portable device was used to examine the relationship between 2 wk of glycemic control and the change in fructosamine in order to determine whether control improved at camp. Thirty children, 8-12 yr old, were studied during a 2-wk session of a diabetes summer camp. Pre-camp HbA1c levels were obtained from the childrens' physicians. Each camper measured his/her blood glucose four times daily. Insulin doses were readjusted frequently by camp physicians. Each child's fructosamine was measured at the beginning and end of camp. The baseline fructosamine correlated with HbA1c. The final fructosamine correlated with the 2-wk mean glucose. The subgroup who started camp in below average glycemic control improved their fructosamine levels by the end of camp. Those who started camp in better control did not change. Without continuous glucose monitoring, it is impossible to accurately determine how well fructosamine reflects glucose levels. In this study, fructosamine correlated with the mean glucoses and with an HbA1c obtained prior to camp. Fructosamine appears to be a valid measure of glycemic control and being at camp was at least transiently beneficial to the children who needed it most.
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Affiliation(s)
- E M Post
- Department of Pediatrics, Cooper Hospital/University Medical Center, Camden, NJ, USA.
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Moore JD. Designed to heal. Architecture of Swedish clinic is about more than medicine. Mod Healthc 2000; 30:32-4. [PMID: 11188183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Moore JD, Dezube BJ, Gill P, Zhou XJ, Acosta EP, Sommadossi JP. Phase I dose escalation pharmacokinetics of O-(chloroacetylcarbamoyl) fumagillol (TNP-470) and its metabolites in AIDS patients with Kaposi's sarcoma. Cancer Chemother Pharmacol 2000; 46:173-9. [PMID: 11021733 DOI: 10.1007/s002800000149] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The pharmacokinetics of TNP-470 and its major metabolites were investigated in AIDS patients enrolled in a phase I dose escalation trial for the treatment of Kaposi's sarcoma. The patients received TNP-470 by 1-h intravenous infusion in dose cohorts of 10, 20, 30, 40, 50 and 70 mg/m2. The parent drug and metabolites, MII and MIV, were measured by high-performance liquid chromatography/mass spectrometry (HPLC/MS) in plasma samples collected during and out to 168 h after the beginning of the infusion. Both metabolites were detected in all patients' plasma, while the parent drug was undetectable at time-points as early as 5 min after the end of infusion for some patients. A large interpatient variability of pharmacokinetic parameters among the dosing cohorts was observed for TNP-470, with a mean (+/- SD) plasma elimination half-life (t1/2) of 0.06 +/- 0.04 h, plasma clearance (CL) of 1487 +/- 1216 l/h and an area under the concentration versus time curve (AUC) of 49.9 +/- 35.8 ng/ml x h. Time to maximum plasma concentration (Tmax) typically occurred before the end of the infusion. The predominant plasma metabolite was MII with a t1/2 of 1.21 +/- 0.43 h, AUC of 1226 +/- 2303 l/h and a Tmax occurring between 5 and 15 min after infusion. The reported active metabolite MIV had a t1/2 of 0.24 +/- 0.13 h, AUC of 24.9 +/- 32.6 ng/ml x h and a Tmax occurring between the midpoint of the infusion and 15 min after infusion. The parent drug was undetectable by HPLC/MS/MS in urine samples collected and pooled between 0-6 and 6-24 h from the beginning of drug administration. Metabolite MIV was present in the 0-6-h urine pool of two patients enrolled in the highest dosing cohorts, equivalent to 0.4% of the administered dose. Metabolite MII was present in all 0-6-h samples analyzed and represented 1.12 +/- 0.9% of the administered dose. Renal clearance (CLR) for MII was 140 +/- 70 ml/h.
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Affiliation(s)
- J D Moore
- University of Alabama at Birmingham, 35294, USA
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Moore JD. SCHIP in the formative years: an update. Issue Brief Natl Health Policy Forum 2000:1-9. [PMID: 11503648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Stith BJ, Hall J, Ayres P, Waggoner L, Moore JD, Shaw WA. Quantification of major classes of Xenopus phospholipids by high performance liquid chromatography with evaporative light scattering detection. J Lipid Res 2000. [DOI: 10.1016/s0022-2275(20)33457-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Stith BJ, Hall J, Ayres P, Waggoner L, Moore JD, Shaw WA. Quantification of major classes of Xenopus phospholipids by high performance liquid chromatography with evaporative light scattering detection. J Lipid Res 2000; 41:1448-54. [PMID: 10974052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Lipid signaling has become a major research area of cell biology and there is a need for methods that accurately and easily measure substrates and products of lipases involved in cell signaling. In this report, we provide new methodology for separation of more than 10 lipids in one chromatographic run by high pressure liquid chromatography (HPLC) and detection with an evaporative light scattering detector (ELSD). There is no significant loss of sphingomyelin and no large baseline change, no peak obscures another, and acidic phospholipids are cleanly separated. We have optimized the procedure for a two-pump HPLC, an inexpensive silica column without the use of a column heater jacket and for low grade nitrogen. An application of the procedure separates lipids from Xenopus laevis cells. These cells are commonly used in the study of various lipid signaling paths in cell division, fertilization, and after expression of exogenous membrane receptors.
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Affiliation(s)
- B J Stith
- Biology Department, University of Colorado-Denver, Denver, CO 80217, USA
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Moore JD. Healthcare compensation rises. Mod Healthc 2000; 30:29-30, 32, 34-6. [PMID: 11184162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Bellandi D, Moore JD. SEIU presses on. Union continues attacking Catholic Healthcare West at CHA's annual meeting. Mod Healthc 2000; 30:8. [PMID: 11183513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Moore JD. JCAHO may shorten accreditation cycle. Mod Healthc 2000; 30:2-3, 12. [PMID: 11183499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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23
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Moore JD. Redefining the word 'kickback'. Mod Healthc 2000; 30:2-3, 12. [PMID: 11183498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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24
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Moore JD. An issue of 'quality'. Mod Healthc 2000; 30:14-5. [PMID: 11067152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. HCFA rejects patient-restraints standard. Mod Healthc 2000; 30:14. [PMID: 11067151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. System divorces on rise. Unscrambling deals is messy and contentious. Mod Healthc 2000; 30:24-6. [PMID: 11067156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The mass merger movement of the 1990s has hit the wall. More and more systems are taking a hard look at what their expensive deals have wrought, and are finding they don't like what they see. Disbanding systems are facing messy problems, and there are many questions as to whether de-merged hospitals can make it on their own.
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Moore JD. Top cardiovascular hospitals. Mod Healthc 2000; 30:30, 32. [PMID: 11067160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. No kids abducted from hospitals in '99. . Mod Healthc 2000; 30:86. [PMID: 11067144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
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Moore JD. It's the little things that mean a lot. Mod Healthc 2000; 30:84. [PMID: 11067143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. Elections break impasse--for now. Mod Healthc 2000; 30:52, 54, 56. [PMID: 11066424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. South Florida gets into quality. Mod Healthc 2000; 30:44. [PMID: 11066422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Moore JD. Credentialing in a vacuum. Mod Healthc 2000; 30:38, 40, 42. [PMID: 11010550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. Reports find error-reporting takes faith. Mod Healthc 2000; 30:3, 16. [PMID: 11010533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Friedman CS, Andree KB, Beauchamp KA, Moore JD, Robbins TT, Shields JD, Hedrick RP. 'Candidatus Xenohaliotis californiensis', a newly described pathogen of abalone, Haliotis spp., along the west coast of North America. Int J Syst Evol Microbiol 2000; 50 Pt 2:847-855. [PMID: 10758896 DOI: 10.1099/00207713-50-2-847] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Withering syndrome is a fatal disease of wild and cultured abalone, Haliotis spp., that inhabit the west coast of North America. The aetiological agent of withering syndrome has recently been identified as a member of the family Rickettsiaceae in the order Rickettsiales. Using a combination of morphological, serological, life history and genomic (16S rDNA) characterization, we have identified this bacterium as a unique taxon and propose the provisional status of 'Candidatus Xenohaliotis californiensis'. The Gram-negative, obligate intracellular pleomorphic bacterium is found within membrane-bound vacuoles in the cytoplasm of abalone gastrointestinal epithelial cells. The bacterium is not cultivable on synthetic media or in fish cell lines (e.g. CHSE-214) and may be controlled by tetracyclines (oxytetracycline) but not by chloramphenicol, clarithromycin or sarafloxicin. Phylogenetic analysis based on the 16S rDNA of 'Candidatus Xenohaliotis californiensis' places it in the alpha-subclass of the class Proteobacteria but not to the four recognized subtaxa of the alpha-Proteobacteria (alpha-1, alpha-2, alpha-3 and alpha-4). The bacterium can be detected in tissue squashes stained with propidium iodide, microscopic examination of stained tissue sections, PCR or in situ hybridization. 'Candidatus Xenohaliotis californiensis' can be differentiated from other closely related alpha-Proteobacteria by its unique 16S rDNA sequence.
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Moore JD. AHA moves on medical errors. As one hospital calls IOM report 'bang-on right,' association begins a data quest. Mod Healthc 2000; 30:3, 8. [PMID: 11009844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. Mass. fights Harvard University for name. Mod Healthc 2000; 30:13. [PMID: 11009835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. Forcing the issue. Californians set to use their electoral clout to place healthcare on the presidential front burner. Mod Healthc 2000; 30:22-3, 26-7. [PMID: 11009841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. CEO turnover drops to new low. Mod Healthc 2000; 30:2-3, 12. [PMID: 11010031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. Protocols reduce errors in Wash. heart program. Mod Healthc 2000; 30:62, 67. [PMID: 11010026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD, Hallam K. States take lead on quality accountability. Mod Healthc 2000; 30:2-3. [PMID: 11010023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. St. Louis hospital shuts doors again. Mod Healthc 2000; 30:14. [PMID: 11010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Antonio DB, Andree KB, Moore JD, Friedman CS, Hedrick RP. Detection of Rickettsiales-like prokaryotes by in situ hybridization in black abalone, Haliotis cracherodii, with withering syndrome. J Invertebr Pathol 2000; 75:180-2. [PMID: 10772333 DOI: 10.1006/jipa.1999.4906] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- D B Antonio
- School of Veterinary Medicine, Department of Medicine and Epidemiology, University of California, Davis, 95616, USA
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Moore JD. One thing leads to another. Medical-errors report means money for medical-outcomes research. Mod Healthc 2000; 30:2, 11. [PMID: 11009987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. What's a credit rating worth? Mod Healthc 2000; 30:40. [PMID: 11009983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Moore JD. Challenges converge on St. Louis system. Mod Healthc 2000; 30:50. [PMID: 11009975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Kirchheimer B, Bellandi D, Moore JD, Morrissey J, Jaklevic MC, Taylor M, Saphir A, Hensley S, Shinkman R, Hallam K. Outlook 2000. Industry turbulence may subside as Medicare pays more and merged systems look inward.... Mod Healthc 2000; 30:25-7, 30-1, 34-6. [PMID: 11009960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Abstract
A 6-year-old malnourished child had persisting hemolysis after attempted valve repair and two surgeries for mitral valve replacement due to partial dehiscence of the valve ring. A modified catheter delivery system was utilized to deploy a total of six Gianturco coils. The hemolysis resolved and the patient was doing well 17 months later. The technique may be helpful in other patients with perivalvular mitral leaks. Cathet. Cardiovasc. Intervent. 49:64-67, 2000.
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Affiliation(s)
- J D Moore
- Center for Pediatric and Congenital Heart Diseases, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
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Moore JD. Panel OKs women's hospital in St. Louis. Mod Healthc 1999; 29:30. [PMID: 12140813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Moore JD. Tapping hidden resources. Healthcare is preparing minorities to move into the executive suite. Mod Healthc 1999; 29:30-1, 34-6. [PMID: 12140824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Moore JD, Cui ST, Cochran HD, Cummings PT. Transient rheology of a polyethylene melt under shear. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 60:6956-9. [PMID: 11970633 DOI: 10.1103/physreve.60.6956] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/1999] [Indexed: 04/18/2023]
Abstract
Using nonequilibrium molecular dynamics simulation, we have studied the response of a C100 model polymer melt to a step change from equilibrium to a constant, high shear rate flow. The transient shear stress of the model polymer melt exhibits pronounced overshoot at the strain value predicted by the reptation model, in striking similarity to melts of longer, entangled polymer governed by reptation motion. At the maximum of shear stress overshoot, the molecular orientational order and the alignment angle are found to be midway between those characteristic of Newtonian flow and full alignment with the flow. The Doi-Edwards theory is found to be applicable but only by taking into account the shear-rate-dependence of the terminal relaxation time. We further analyze the molecular origins of such behavior in short polymer chains by decomposing the total stress into the contributions from various molecular interactions.
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Affiliation(s)
- J D Moore
- Department of Chemical Engineering, University of Tennesee, Knoxville, Tennessee 37996-2200, USA
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