201
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Nelson DJ, Opella SJ, Jardetzky O. 13C nuclear magnetic resonance study of molecular motions and conformational transitions in muscle calcium binding parvalbumins. Biochemistry 1976; 15:5552-60. [PMID: 999828 DOI: 10.1021/bi00670a020] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
13C nuclear magnetic resonance is used to detect the Ca2+ ion controlled conformational transition in muscle calcium binding parvalbumin and to study its intramolecular motions. Nuclear relaxation parameters are used to evaluate the reorientation rates of the protein and some of the amino acid side chains. While peripheral residues exhibit greater motional freedom than the protein interior, an interesting finding is that significant rapid internal motion is present in the phenylalanine rings comprising the hydrophobic core of the protein.
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202
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Lewis AJ, Cottney J, Nelson DJ. Mechanisms of phytohaemagglutinin-P-, concanavalin-A- and kaolin-induced oedemas in the rat. Eur J Pharmacol 1976; 40:1-8. [PMID: 991919 DOI: 10.1016/0014-2999(76)90347-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Subplantar administration of either Phytohaemagglutinin-P (PHA), Concanavalin-A (Con A) or kaolin into the rat hind paw produced a dose related oedema which was still present at 48 h. Both of the lectins were more inflammagenic than kaolin on a weight per weight basis. As a result of studies using mediator inhibitors and depletors it appears that 5HT, but not histamine, may play a role in the early phases (0.5-1.5 h) of both PHA and Con A responses. Neither mediator appears to be involved in the kaolin oedema. Kinins are also likely mediators of the inflammatory response to all three irritants and could be detected in irritant injected air blebs in the rat. Prostaglandins are unlikely to play a significant role in PHA or Con A oedema since indomethacin-induced inhibition of their synthesis has only a slight inhibitory effect on the lectin induced paw oedemas and only small amounts of prostaglandin-like material could be detected in PHA or Con A blebs. However, kaolin oedema appears to have a significant prostaglandin component since large amounts of prostaglandin-like materials were detected in kaolin blebs and also indomethacin reduced the kaolin induced paw oedema. Other mediators of the inflammatory process such as complement are likely to be involved in all three irritant induced oedemas.
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203
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Cottney J, Lewis AJ, Nelson DJ. Arachidonic acid-induced paw oedema in the rat [proceedings]. Br J Pharmacol 1976; 58:311P. [PMID: 974426 PMCID: PMC1667330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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204
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Bengelloun WA, Nelson DJ, Zent HM, Beatty WW. Behavior of male and female rats with septal lesions: influence of prior gonadectomy. Physiol Behav 1976; 16:317-30. [PMID: 996129 DOI: 10.1016/0031-9384(76)90139-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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205
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Nelson DJ, Yeagle PL, Miller TL, Martin RB. Carbon-13 magnetic resonance spectra of nucleosides and their Pd(II) complexes. BIOINORGANIC CHEMISTRY 1976; 5:353-8. [PMID: 1276232 DOI: 10.1016/s0006-3061(00)80295-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chemical shifts occurring in carbon-13 magnetic resonance spectroscopy are utilized to assess the site of complexation of nucleosides to enPdC12 in neutral aqueous solutions. Binding occurs at N3 in cytidine, thymidine, and uridien, at N7 in 1-methylguanosine, and at N1 in guanosine. For most carbon atoms adjacent to N3 in the pyrimidine nucleosides the complexation shifts of the basic ligand are about 30% of the corresponding upfield protonation shifts. All complexes are of the form enPdL2 indicating that the ligands are unidentate and that the tendency to chelation is weak. Carbon-13 magnetic resonance spectroscopy appears to be the best method for delineating these complexes in solution. Due to the high avidity of chloride ion for Pt(II), cis dichloro Pd(II) complexes may be better models for intracellular action of the corresponding Pt(II) complexes than the Pt(II) complexes themselves.
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206
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Miller TL, Nelson DJ, Brittain HG, Richardson FS, Martin RB, Kay CM. Calcium binding sites of rabbit troponin and carp parvalbumin. FEBS Lett 1975; 58:262-4. [PMID: 1225590 DOI: 10.1016/0014-5793(75)80274-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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207
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Lewis AJ, Nelson DJ, Sugrue MF. On the ability of prostaglandin E1, and arachidonic acid to modulate experimentally induced oedema in the rat paw. Br J Pharmacol 1975; 55:51-6. [PMID: 1182349 PMCID: PMC1666721 DOI: 10.1111/j.1476-5381.1975.tb07609.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
1 Prostaglandins E1 and E2 but not prostaglandin F2alpha, arachidonic acid or linolenic acid, produced slight oedema when injected into the rat hindpaw. 2 Prostaglandin E1 potentiated hindpaw oedema produced by carrageenan, kaolin, bradykinin and trypsin but not that produced by 5-hydroxytryptamine (5-HT), histamine, dextran B or compound 48/80. Carrageenan- and bradykinin-induced paw oedemas were also potentiated by prostaglandin E2. Arachidonic acid potentiated responses to carrageenan and kaolin but not responses to bradykinin, trypsin, 5-HT, histamine, dextran B or compound 48/80. Linolenic acid did not potentiate hindpaw oedema induced by carrageenan. 3 Potentiation of carrageenan-induced oedema by prostaglandin E1 was not diminished by pretreatment with indomethacin, hydrocortisone or cyproheptadine. However, arachidonic acid potentiation of carrageenan oedema was reduced by pretreatment with non-steroidal anti-inflammatory drugs but not by anti-inflammatory steroids or by paracetamol. 4 The enhancement of the response to carrageenan and kaolin by prostaglandins E1, E2 and arachidonic acid is discussed in terms of kinin mediation.
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208
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Nelson DJ, Elion GB. Metabolism of (6-14-c)allopurinollack of incorporation of allopurinol into nucleic acids. Biochem Pharmacol 1975; 24:1235-7. [PMID: 1137609 DOI: 10.1016/0006-2952(75)90069-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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209
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Bauer DR, Opella SJ, Nelson DJ, Pecora R. Letter: Depolarized light scattering and carbon nuclear resonance measurements of the isotropic rotational correlation time of muscle calcium binding protein. J Am Chem Soc 1975; 97:2580-2. [PMID: 1133427 DOI: 10.1021/ja00842a067] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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210
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Abstract
1. The distribution, activity, and function of the cilia in the brain was studied using in vitro preparations of the frog choroid plexuses and ependyma.2. Scanning electron microscopy revealed that twenty to forty cilia, about 20 mum long, project from the cells of the choroidal epithelium and ependyma into the ventricular system of the brain.3. These cilia beat at a constant frequency which ranged from 5 to 20 c/s. Ciliary activity was enhanced by ATP, cyclic AMP, theophylline, and acetylcholine, and was depressed by DNP, IAA, Ni(2+), La(3+), and Co(2+).4. Ciliary motion produced a flow of c.s.f. over the surface of the cells lining the ventricles, and in the choroid plexus this flow reduced the effective thickness of the unstirred layer adjacent to the epithelium by about 100 mum.5. These results are discussed in relation to the factors that control the frequency of ciliary beating, and the role of the cilia in the circulation of the c.s.f.
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211
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Opella SJ, Nelson DJ, Jardetzyk O. Letter: Carbon magnetic resonance study of the conformational changes in carp muscle calcium binding parvalbumin. J Am Chem Soc 1974; 96:7157-9. [PMID: 4474190 DOI: 10.1021/ja00829a084] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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212
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Zimmerman TP, Chu LC, Buggé CJ, Nelson DJ, Miller RL, Elion GB. Formation of 5'-nucleotides of 6-methylmercaptopurine ribonucleoside in human tissues in vitro. Biochem Pharmacol 1974; 23:2737-49. [PMID: 4370717 DOI: 10.1016/0006-2952(74)90044-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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213
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Cozzone PJ, Nelson DJ, Jardetzky O. Fourier transform phosphorus magnetic resonance study of ATP--calcium--G-actin complex. Biochem Biophys Res Commun 1974; 60:341-7. [PMID: 4421143 DOI: 10.1016/0006-291x(74)90210-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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214
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Lewis AJ, Nelson DJ, Sugrue MF. Proceedings: Potentiation by prostaglandin E1 and arachidonic acid of oedema in the rat paw induced by various phlogogenic agents. Br J Pharmacol 1974; 50:468P-469P. [PMID: 4853839 PMCID: PMC1776647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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215
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Zimmerman TP, Chu LC, Buggé CJ, Nelson DJ, Lyon GM, Elion GB. Identification of 6-methylmercaptopurine ribonucleoside 5'-diphosphate and 5'-triphosphate as metabolites of 6-mercaptopurine in man. Cancer Res 1974; 34:221-4. [PMID: 4520420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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216
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Fyfe JA, Nelson DJ, Hitchings GH. The molecular basis for the effects of allopurinol on pyrimidine metabolism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1974; 41:621-8. [PMID: 4832588 DOI: 10.1007/978-1-4757-1433-3_31] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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217
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Elion GB, Nelson DJ. Ribonucleotides of allopurinol and oxipurinol in rat tissues and their significance in purine metabolism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1974; 41:639-52. [PMID: 4832590 DOI: 10.1007/978-1-4757-1433-3_34] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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218
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Nelson DJ, Buggé CJ, Krasny HC, Elion GB. Formation of nucleotides of (6-14C)allopurinol and (6-14C)oxipurinol in rat tissues and effects on uridine nucleotide pools. Biochem Pharmacol 1973; 22:2003-22. [PMID: 4353669 DOI: 10.1016/0006-2952(73)90082-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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219
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Nelson DJ, Bugge CJ, Krasny HC, Zimmerman TP. Separation of 6-thiopurine derivatives on DEAE-sephadex columns and in the high-pressure liquid chromatograph. J Chromatogr A 1973; 77:181-90. [PMID: 4690606 DOI: 10.1016/s0021-9673(00)93946-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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220
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Nelson DJ, Carter CE. Purification and characterization of Thymidine 5-monophosphate kinase from Escherichia coli B. J Biol Chem 1969; 244:5254-62. [PMID: 4899016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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221
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Ragsdale HL, Witherspoon JP, Nelson DJ. The effects of biotic complexity and fast neutron radiation on cesium-137 and cobalt-60 kinetics in aquatic microcosms. ORNL-4318. ORNL. U.S. ATOMIC ENERGY COMMISSION 1968:1-171. [PMID: 5732265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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222
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Blaylock BG, DePoe CE, Griffith NA, Kevern NR, Neal EC, Nelson DJ, Patten BC, Reed JR, Wilhm JL. Radionuclide cycling in aquatic ecosystems. ORNL-4168. ORNL. U.S. ATOMIC ENERGY COMMISSION 1967:93-101. [PMID: 5597994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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223
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Curlin JW, Nelson DJ, Grizzard T, Norman EL, Taylor FG, Abner CH, Boyett RH, Clebsch EE, Johnson WF, Fish BR. Watershed aquatic habitat interactions. ORNL-4168. ORNL. U.S. ATOMIC ENERGY COMMISSION 1967:102-10. [PMID: 5597968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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224
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Nelson DJ, Carter CE. Inhibition of thymidine-5'-monophosphokinase from L5178Y mouse leukemia by diethystilbestrol and 17-ethynyl-beta-estradiol. Mol Pharmacol 1967; 3:341-51. [PMID: 6033634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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225
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Kolehmainen SE, Nelson DJ. The balances of 137Cs, stable cesium, and the feeding rates of bluegill (Lepomis macrochirus raf.) in White Oak Lake. ORNL-4445. ORNL. U.S. ATOMIC ENERGY COMMISSION 1966:1-114. [PMID: 6012412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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226
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Abstract
The calcium carbonate in freshwater clam shells is simlilar in purity to that designated reagent grade. A simple reprecipitation of the shell extract results in a product having less Sr and Mg than reagent grade CaCO(3). Clams are harvested commercially, and discarded shells are a high-quality raw material for the production of CaCO(3).
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227
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Nelson DJ, Carter CE. Inhibition of the biosynthesis of thymidylic acid by 4-N-Hydroxy-2'-deoxycytidine in L5178Y leukemic cells. Mol Pharmacol 1966; 2:248-58. [PMID: 5962067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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228
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Rosenthal GM, Nelson DJ, Gardiner DA. Deposition of strontium and calcium in snail shell. Nature 1965; 207:51-4. [PMID: 5866525 DOI: 10.1038/207051b0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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229
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Abstract
Fresh-water clams concentrate strontium-90 in their shells and may be used as indicators of the Sr(90) contamination of their environment. Analysis of data derived from the specific activity of Sr(90) in shells showed that Sr(90) released to the Tennessee River system remained in solution and that concentrations to a distance of 500 miles from the release site can be predicted on the basis of the dilution of contaminated White Oak Creek water by uncontaminated Clinch-Tennessee River water.
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