451
|
Dominguez JH, Chen TC, Fragola J, Puschett JB. Inhibition of the renal tubular effects of parathyroid hormone on phosphate transport by prostaglandin E2. Endocrinology 1981; 109:2267-9. [PMID: 6946926 DOI: 10.1210/endo-109-6-2267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The infusion of PGE2 into TPTX dogs abolishes the phosphaturic action of PTH in vivo. This effect occurs only if PGE2 infusion precedes the administration of PTH. The infusion of PGE2 in vivo induces a state of refractoriness of PTH-sensitive adenylate cyclase in renal middle medulla from TPTX dogs in vitro. These results suggest that PGE2 inhibits the biological effects of PTH, in part by altering the events related to PTH activation of renal adenylate cyclase. These effects of PGE2, a local mediator, suggest that the renal tubular cell may modulate its responses to multiple and antagonistic stimuli by altering local renal prostaglandins.
Collapse
|
452
|
Chen TC, Puschett JB. Evidence for an endogenous parathyroid hormone-sensitive adenylate cyclase activator. Biochem Biophys Res Commun 1981; 100:1471-6. [PMID: 7295311 DOI: 10.1016/0006-291x(81)90684-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
453
|
Chen TC, Weber MA. Effects of di-isopropylfluorophosphate and isopropanol on the measurement of plasma renin activity. Clin Chim Acta 1980; 107:217-22. [PMID: 7002369 DOI: 10.1016/0009-8981(80)90449-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Since the protease inhibitor, di-isopropylfluorophosphate (DFP), inhibits the cryoactivation of inactive renin, its addition to stored plasma should prevent unintended renin activation and thereby minimize this source of inaccuracy in the assay of plasma renin activity. However, we have found that 6 mmol/l DFP in stored frozen plasma actually reduced plasma renin activity from 4.89 +/- 0.13 (S.D.) to 2.48 +/- 0.17 ng . ml-1 . h-1 (p < 0.001). This effect did not occur if DFP was added immediately before assay, suggesting that the decreased renin activity reflected an action of DFP on components of the renin system during storage rather than any interference with the assay method itself. The organic solvent isopropanol, which is required to dilute the DFP, appeared responsible for this phenomenon, for when the isopropanol alone, in concentrations of 20 and 40 microliter/ml, was added to stored frozen plasma it decreased plasma renin activity from 3.6 +/- 0.3 to 2.2 +/- 0.1 and 0.6 +/- 0.1 ng . ml-1 . h-1, respectively (p < 0.001 in each case). Correspondingly, plasma renin substrate concentrations were decreased to 71% and 6% of control, indicating that the renin activity reductions produced by isopropanol were due to its denaturation of substrate. Moreover, addition of exogenous sheep renin substrate (1400 ng/ml) immediately before assay restored plasma renin activity to control. Thus, although DFP effectively prevents inadvertent renin activation in stored frozen plasma, it would seem important that subsequent assays for plasma renin activity be performed in the presence of added exogenous substrate.
Collapse
|
454
|
Chen TC, Knapp RD, Rohde MF, Brainard JR, Gotto AM, Sparrow JT, Morrisett JD. Magnetic resonance studies of apolipoprotein C-I nitroxide labeled or [13C]methyl enriched at methionine-38. Biochemistry 1980; 19:5140-6. [PMID: 6257278 DOI: 10.1021/bi00563a032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
One of the three proposed lipid-binding regions of the human apolipoprotein C-I (apo-C-I) is an amphipathic helix which extends from residue 33 to residue 53 and includes a single methionine at sequence position 38. The involvement of the sequence around methionine-38 in phospholipid binding has been evaluated with paramagnetic and nuclear reported groups attached to the thiomethyl moiety. This moiety has been spin-labeled with N-(2,2,6,6-tetramethylpiperidinyl-1-oxy)bromoacetamide or 13C enriched with 13CH3I. As determined from its EPR spectrum, the nitroxide at Met-38 of apoC-I had a rotational correlation time (tau C) of 0.22 ns. When dimyristoylphosphatidylcholine (DMPC) was bound to the spin-labeled apoprotein, tau c increased to 0.35 ns, indicating decreased motion for the methionyl side chain. The line width (nu 1/2) and spin--lattice relaxation time (T1) for the thiomethyl resonance of 13C-enriched apoC-I in 10 mM phosphate buffer was 6.0 Hz and 320 ms, respectively. When the protein solution was made 1.6 M in Gdn-HCl, these values changed to 2.6 Hz and 970 ms, respectively. Upon addition of DMPC multilamellar liposomes to [13C]apoC-I in 1.6 M Gdn-HCl, the line width increased to 4.7 Hz and the T1 decreased to 380 ms. These results strongly suggest that methionine-38 of apoC-I resides in a region of the apoprotein which undergoes significant secondary and/or tertiary structural change upon disaggregation/unfolding in Gdn-HCl and upon interaction with phospholipid.
Collapse
|
455
|
Chen TC, Rosenblatt M, Puschett JB. Effects of calcium on a parathyroid hormone-sensitive adenylate cyclase inhibitor. Biochem Biophys Res Commun 1980; 94:1227-32. [PMID: 6772185 DOI: 10.1016/0006-291x(80)90550-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
456
|
Howell WL, Chen TC. Supraorbital opacity pulses during carotid artery compression: a method for the detection of carotid obstruction. IEEE Trans Biomed Eng 1980; 27:84-7. [PMID: 7353899 DOI: 10.1109/tbme.1980.326711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
457
|
Cote TE, Chen TC, Kebabian JW. Guanosine triphosphate: an endogenous compound in the rabbit cerebellar cortex which couples the beta-adrenergic receptor to adenylate cyclase. Brain Res 1980; 181:127-38. [PMID: 6243221 DOI: 10.1016/0006-8993(80)91263-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The guanyl nucleotides GTP and GDP are endogenous factors in the rabbit cerebellum which contribute to the in vitro coupling of the beta-adrenergic receptor to adenylate cyclase. Repeated washing of the particulate material removes these endoactivity to beta-adrenergic agonists. The endogenous GTP and GDP, isolated by high pressure liquid chromatography, mimic the ability of the supernatant both to restore the coupling of receptor and enzyme and to increase basal enzyme activity. The effectiveness of GDP reflects its conversion to GTP during the assay. GTP does not affect either the number of [3H]dihydroalprenolol binding sites or the affinity of these sites for L-isoproterenol; furthermore, GTP does not cause a shift in activation affinity of enzyme activity for isoproterenol. Thus, the guanyl nucleotides are endogenous constituents of the mammalian brain which are essential for the functional 'coupling' of beta-adrenergic receptors to adenylate cyclase.
Collapse
|
458
|
Chen TC, Cote TE, Kebabian JW. Endogenous components of the striatum confer dopamine-sensitivity upon adenylate cyclase activity: the role of endogenous guanyl nucleotides. Brain Res 1980; 181:139-49. [PMID: 7350949 DOI: 10.1016/0006-8993(80)91264-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Repeated washing of the particulate material from rat striatum abolishes the dopamine-sensitivity of the adenylate cyclase activity. Readdition of the soluble fraction of the caudate homogenate restores the dopamine-sensitivity to the enzyme activity. Fractions, prepared with thin layer chromatography, containing endogenous GTP and GDP also restore dopamine-sensitivity to striatal adenylate cyclase activity. The effectiveness of GDP results from its conversion to GTP during the assay; when this conversion is eliminated, GDP can specifically block the coupling between the dopamine receptor and adenylate cyclase.
Collapse
|
459
|
Chen TC, Bradley WA, Gotto AM, Morrisett JD. Binding of the chemical carcinogen, p-dimethylaminoazobenzene, by human plasma low density lipoproteins. FEBS Lett 1979; 104:236-40. [PMID: 225207 DOI: 10.1016/0014-5793(79)80822-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
460
|
Chen TC, Sparrow JT, Gotto AM, Morrisett JD. Apolipoprotein A-II: chemical synthesis and biophysical properties of three peptides corresponding to fragments in the amino-terminal half. Biochemistry 1979; 18:1617-22. [PMID: 218625 DOI: 10.1021/bi00575a037] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Three peptide fragments of apolipoprotein A-II corresponding to residues 17--31, 12--31, and 7--31 have been synthesized by solid-phase techniques and purified to apparent homogeneity. Each of these fragments contains residues 18--30, a region previously proposed to possess potential amphipathic helical properties. Secondary structural changes of these synthetic fragments accompanying their interaction with phospholipid have been studied by circular dichroism. The magnitude of this interaction has been evaluated from the yields and stoichiometry of lipid-protein complexes isolated by density gradient ultracentrifugation. Fragment 17--31, the smallest peptide containing the proposed amphipathic helix, did not interact with dimyristoylphosphatidylcholine (DMPC) single bilayer vesicles at 24 degrees C; upon addition of DMPC, no ellipticity change could be detected nor could a stable lipid-peptide complex be isolated. However, fragments 12--31 and 7--31 did interact with phosphilipid; in the absence of lipid, both fragments had primarily disordered structures, but when isolated as DMPC-peptide complexes, both fragments possessed increased helical structure. The phospholipid:peptide molar ratio was 14:1 for fragment 12--31 and 27:1 for fragment 7--31. Studies of space-filling models of these fragments suggest that hydrophobicity and/or length are important properties of phospholipid binding apoproteins.
Collapse
|
461
|
Chen TC, Ray DS. Replication of bacteriophage M13. XIV. Differential inhibition of the replication of M13 and M13 miniphage in a mutant of Escherichia coli defective in the 5' leads to 3' exonuclease associated with DNA polymerase I. J Virol 1978; 28:679-85. [PMID: 366176 PMCID: PMC525791 DOI: 10.1128/jvi.28.3.679-685.1978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Previous studies have shown that M13 single-strand synthesis is inhibited at nonpermissive temperature in Escherichia coli polAexl, a temperature-sensitive mutant defective in the 5' leads to 3' exonuclease activity of polymerase I (T.-C. Chen and D. S. Ray, J. Mol. Biol. 106:589-604, 1976). Under these conditions the formation of covalently closed replicative form (RF) molecules is greatly reduced, and miniature forms of RF accumulate. We show here that the accumulation of mini-RFs is the consequence of a differential inhibition of the replication of unit-length phage and preexisting miniphage rather than a de novo production of miniphage. Mini-RFs do not accumulate even after as many as nine cycles of growth in the mutant host infected only with unit-length phage. Mixed infections of the mutant host with plaque-purified unit-length phage and a single cloned miniphage show that discontinuities in the mini-RFs are joined with higher efficiency than are those contained in unit-length RFs. After a shift to nonpermissive temperature during single-strand synthesis in cells infected with plaque-purified phage alone, M13 RFs are found largely as RFII molecules (RF form having one or more single-strand discontinuities) containing only a single discontinuity in the viral strand. The inability of the accumulated unit-length RFII molecules to actively replicate may reflect the presence of either a bound protein or RNA primer on the 5' terminus of the viral strand and provides further support for the existence of distinct initiation and termination events in the synthesis of the viral strand.
Collapse
|
462
|
Chen TC, Ray DS. Replication of bacteriophage M13. XIII. Structure and replication of cloned M13 miniphage. J Mol Biol 1978; 125:107-21. [PMID: 731688 DOI: 10.1016/0022-2836(78)90340-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
463
|
Chen TC, Ray DS. Replication of bacteriophage M13. X. M13 replication in a mutant of Escherichia coli defective in the 5' leads to 3' exonuclease associated with DNA polymerase I. J Mol Biol 1976; 106:589-604. [PMID: 789894 DOI: 10.1016/0022-2836(76)90253-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
464
|
Wang PL, Day EJ, Chen TC. Microbiological quality of frozen fried chicekn product obtained from a retail store. Poult Sci 1976; 55:1290-3. [PMID: 986046 DOI: 10.3382/ps.0551290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Two brands of frozen fried chicken products were purchased monthly from a local supermarket for six months. Microbiological qualities of these samples were studied. The log number of mesophilic counts ranged from 2.90/g. to 4.78/g; log psychrophilic counts varied from 2.74/g. to 4.66/g.; and log Staphylococcus- 110 medium counts ranged from 2.84/g. to 4.54/g. Mean log microbial counts were higher in brand A samples than in brand B samples. No yeast or mold was detected and all samples were Salmonella negative. Most samples were negative in coliform test, except five samples had coliform MPN ranging from 0.5/g to 0.8/g. A total of 144 isolates of psychrophiles from 12 samples was tentatively identified to be members of Staphylococcus species. About 82.2% of the isolates belong to the Subgroup VI Staphylococcus according to Baird-Parker's classification. Another 17.8% of the isolates resembled Subgroup vi Staphylococcus except in phosphatase test.
Collapse
|
465
|
Wang KY, Chang SF, Peng CF, Chen TC. Studies on shigella isolated in southern Taiwan. ZHONGHUA MINGUO WEI SHENG WU XUE ZA ZHI = CHINESE JOURNAL OF MICROBIOLOGY 1976; 9:13-8. [PMID: 1036983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
During 1969, a total of 1,476 fecal and rectal swab specimens was collected from children with diarrhea and 249 strains of shigella were isolated. The incidence was 16.9%. The serotypes of 249 strains were: Shigella dysenteriae, 1.6% (4 strains); S. flexneri, 73.1% (182 strains); S. boydii, 3.2 (8 strains) and S. sonnei, 22.1% (55 strains). There was no marked difference of the isolation rate throughout the whole year. The susceptibility of shigella isolates to chemotherapeutic agents were also investigated. The percentage of the strains susceptible to gentamicin was 97.2%; to cephaloridine, 93.2%; to kanamycin, 91.9%; to colistin, 91.6%; to hetacillin, 88.4%; to ampicillin, 82.4% and to nalidixic acid, 79.9%. The other tested chemotherapeutic agents were less effective.
Collapse
|
466
|
Li CL, Ahlberg D, Lansdell H, Gravitz MA, Chen TC, Ting CY, Bak AF, Blessing D. Acupuncture and hypnosis: effects on induced pain. Exp Neurol 1975; 49:272-80. [PMID: 1183526 DOI: 10.1016/0014-4886(75)90210-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
467
|
Chen TC, Levin RE. Isolation of Aeromonas sp. ATCC 29063, a phenol-producing organism, from fresh haddock. Appl Microbiol 1975; 30:120-2. [PMID: 1147610 PMCID: PMC187129 DOI: 10.1128/am.30.1.120-122.1975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Attempts to isolate phenol-producing organisms from stale haddock fillets failed. Several such isolates, however, were readily obtained from fresh haddock and were designated Aeromonas sp. Phenol was produced from L-tyrosine by these isolates.
Collapse
|
468
|
Chen TC, Levin RE. Taxonomic significance of phenethyl alcohol production by Achromobacter isolates from fishery sources. Appl Microbiol 1974; 28:681-7. [PMID: 4422523 PMCID: PMC186797 DOI: 10.1128/am.28.4.681-687.1974] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The formation of phenethyl alcohol from L-phenylalanine and ethanol by achromobacter isolates of fishery origin was found to be taxonomically significant for such organisms. Phenylpyruvate, the direct oxidative deamination product of L-phenylalanine, was found to serve as an intermediate precursor to phenethyl alcohol formation. Among ten Acinetobacter isolates examined, none produced phenethyl alcohol. Among nine Moraxella isolates examined, one produced phenethyl alcohol.
Collapse
|
469
|
Chen TC, Nawar WW, Levin RE. Identification of major high-boiling volatile compounds produced during refrigerated storage of haddock fillets. Appl Microbiol 1974; 28:679-80. [PMID: 4424674 PMCID: PMC186796 DOI: 10.1128/am.28.4.679-680.1974] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The two major high-boiling volatile compounds produced during refrigerated storage of haddock fillets were found by gas chromatography and mass spectroscopy to be phenethyl alcohol and phenol.
Collapse
|
470
|
Chen TC, Day EJ. Gentian violet as a possible fungal inhibitor in poultry feed: plate assays on its antifungal activity. Poult Sci 1974; 53:1791-5. [PMID: 4213944 DOI: 10.3382/ps.0531791] [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: 01/09/2023] Open
|
471
|
Chen TC, Castillo L, Korycka-Dahl M, DeLuca HF. Role of vitamin D metabolites in phosphate transport of rat intestine. J Nutr 1974; 104:1056-60. [PMID: 4854171 DOI: 10.1093/jn/104.8.1056] [Citation(s) in RCA: 149] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
|
472
|
Kubena LF, Chen TC, Deaton JW, Reece FN. Factors influencing the quantity of abdominal fat in broilers. 3. Dietary energy levels. Poult Sci 1974; 53:974-8. [PMID: 4841683 DOI: 10.3382/ps.0530974] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
|
473
|
Kubena LF, Deaton JW, Chen TC, Reece FN. Factors influencing the quality of abdominal fat in broilers. 1. Rearing temperature, sex, age or weight, and dietary choline chloride and inositol supplementation. Poult Sci 1974; 53:211-4. [PMID: 4833030 DOI: 10.3382/ps.0530211] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
|
474
|
Lam HY, Schnoes HK, DeLuca HF, Chen TC. 24,25-Dihydroxyvitamin D3. Synthesis and biological activity. Biochemistry 1973; 12:4851-5. [PMID: 4761971 DOI: 10.1021/bi00748a007] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
475
|
Lin JK, Chen TC, Chiang HH, Tung TC. Studies on the effect of riboflavin tetrabutyrate on the atherosclerosis induced by cholesterol feeding in rabbits. I. Effect of riboflavin tetrabutyrate on serum and hepatic lipids. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1973; 72:440-9. [PMID: 4520341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
476
|
Chen TC, DeLuca HF. Receptors of 1,25-dikydroxycholecalciferol in rat intestine. J Biol Chem 1973; 248:4890-5. [PMID: 4717530] [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
|
477
|
Chen TC, Deluca HF. Stimulation of (3H)uridine incorporation into nuclear RNA of rat kidney by vitamin D metabolites. Arch Biochem Biophys 1973; 156:321-7. [PMID: 4730476 DOI: 10.1016/0003-9861(73)90370-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
478
|
Tanaka Y, Chen TC, Deluca HF. Dependence of 25-hydroxycholecalciferol-1-hydroxylase regulation on RNA and protein synthesis. Arch Biochem Biophys 1972; 152:291-8. [PMID: 5072703 DOI: 10.1016/0003-9861(72)90218-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
479
|
Fuccillo DA, Sever JL, Moder FL, Chen TC, Catalano LW, Johnson LD. Cytomegalovirus antibody in patients with carcinoma of the uterine cervix. Obstet Gynecol 1971; 38:599-601. [PMID: 4329117 DOI: 10.1097/00006250-197110000-00016] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
480
|
Horta-Barbosa L, Krebs H, Ley A, Chen TC, Gilkeson MR, Sever JL. Progressive increase in cerebrospinal fluid measles antibody levels in subacute sclerosing panencephalitis. Pediatrics 1971; 47:782-3. [PMID: 5089768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
|
481
|
Chen TC, Weber JC, DeLuca HF. On the subcellular location of vitamin D metabolites in intestine. J Biol Chem 1970; 245:3776-80. [PMID: 5492946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
|
482
|
McCracken GH, Hardy JB, Chen TC, Sever JL. Evaluation of a radial diffusion plate method for determining serum immunoglobulin levels in normal and congenitally infected infants. J Pediatr 1969; 75:1204-10. [PMID: 4187144 DOI: 10.1016/s0022-3476(69)80376-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
483
|
McCracken GH, Chen TC, Hardy JB, Tzan N. Serum immunoglobulin levels in newborn infants. I. Evaluation of a radial diffusion plate methods. J Pediatr 1969; 74:378-82. [PMID: 4179342 DOI: 10.1016/s0022-3476(69)80194-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
484
|
McCracken GH, Hardy JB, Chen TC, Hoffman LS, Gilkeson MR, Sever JL. Serum immunoglobulin levels in newborn infants. II. Survey of cord and follow-up sera from 123 infants with congenital rubella. J Pediatr 1969; 74:383-92. [PMID: 4180010 DOI: 10.1016/s0022-3476(69)80195-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|