401
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Parker S. Functional overlay. West J Med 1979; 131:157. [PMID: 18748462 PMCID: PMC1271724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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402
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Galbraith PR, Baker FL, Cooke LJ, Morley DC, Sinclair J, Parker S, Brisbin D. Factors influencing in vitro production of colony-stimulating factor by mononuclear leukocytes from humans. Can Med Assoc J 1979; 121:172-8. [PMID: 316353 PMCID: PMC1704294] [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: 12/14/2022]
Abstract
The purpose of this study was to identify factors that influence the production of colony-stimulating factor by leukocytes of humans. The use of nonadherent light-density bone marrow cells is semisolid agar cultures to assay the concentrations of colony-stimulating factor in the supernatant of monocyte and mononuclear leukocyte cultures made it possible to distinguish between colony-stimulating factor, which stimulates colony-forming cells directly, and monocyte-dependent stimulating activity, which acts indirectly, by increasing the monocyte production of colony-stimulating factor. Colony-stimulating factor was not detectable in the cytosol of monocytes; that detected in culture must, therefore, have been newly synthesized. Synthesis was enhanced independently by heat-inactivated human serum and by semipurified serum fractions enriched with monocyte-dependent stimulating activity. The kinetics of the production of colony-stimulating factor in the presence and absence of monocyte-dependent stimulating activity indicated that the latter facilitated monocyte production of the former. Factors released from neutrophils were shown to reduce the production of colony-stimulating factor and thr proliferation of colony-forming cells and thus may provide a feedback control mechanism limiting the proliferation of neutrophils.
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403
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Garry RF, Bishop JM, Parker S, Westbrook K, Lewis G, Waite MR. Na+ and K+ concentrations and the regulation of protein synthesis in Sindbis virus-infected chick cells. Virology 1979; 96:108-20. [PMID: 462804 DOI: 10.1016/0042-6822(79)90177-6] [Citation(s) in RCA: 109] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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404
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McClain CJ, Van Thiel DH, Parker S, Badzin LK, Gilbert H. Alterations in zinc, vitamin A, and retinol-binding protein in chronic alcoholics: a possible mechanism for night blindness and hypogonadism. Alcohol Clin Exp Res 1979; 3:135-41. [PMID: 391074 DOI: 10.1111/j.1530-0277.1979.tb05287.x] [Citation(s) in RCA: 106] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Deficiencies in zinc and vitamin A may play a role in the night blindness and hypogonadism of some chronic alcoholics; abstinence and zinc and vitamin A therapy may be of some benefit in these processes.
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405
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Presant CA, Parker S. Imidoester inhibition of lymphocyte DNA synthesis. Cancer Res 1979; 39:345-8. [PMID: 216487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Imidoesters amidinate free amino groups and produce inter- and intramolecular covalent bonds. To determine whether imidoesters influenced lymphocyte transformation, human peripheral blood or calf lymph node lymphocytes were cultured with dimethyladipimate (DMA), a bifunctional (cross-linking) imidoester, or methyl acetimidate (MAC), a monofunctional (noncross-linking) imidoester. Both DMA and MAC decreased the rate of endogenous DNA synthesis in a dose-dependent fashion. In further work, lymphocytes were treated with Phaseolus vulgaris phytohemagglutinin, concanavalin A, or periodate. DMA (1 mM) decreased DNA synthesis in P. vulgaris phytohemagglutinin-stimulated human cells by 65%, Concanavalin A-stimulated cells by 98.2%, and periodate-stimulated cells by 85%. Similar results were obtained with 1 mM MAC. Inhibition by DMA was slightly greater than was the inhibition by MAC. Decreased DNA synthesis resulted if DMA was added to P. vulgaris phytohemagglutinin-stimulated human lymphocytes at initiation of culture (72%) or after 16 hr (75%); inhibition was less when DMA was added after 24 hr (43%) and was not apparent if added after 48 hr. Therefore, both monofunctional and bifunctional imidoesters inhibit endogenous and stimulated DNA synthesis in human and calf lymphocytes.
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406
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Parker S. Emergency room utilization at Hermann hospital. Tex Med 1978; 74:62-70. [PMID: 715736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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407
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Bower AJ, Parker S, Molony V. An autoradiographic study of the afferent innervation of the trachea, syrinx and extrapulmonary primary bronchus of Gallus gallus domesticus. J Anat 1978; 126:169-80. [PMID: 649496 PMCID: PMC1235721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A method for injecting a small quantity of tritiated leucine directly into the nodose ganglion of the adult hen is described. The presence of an inner and an outer nerve plexus in the trachea and extrapulmonary primary bronchus is confirmed. Structures in the luminal epithelium of the trachea, syrinx and extrapulmonary primary bronchus having an afferent innervation are described and their possible function is discussed. The question of positive chemography in autoradiographic studies is discussed.
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408
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Parker S. Risk management: many solutions proposed and successes noted. Hospitals 1978; 52:156-8. [PMID: 631772] [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: 12/23/2022]
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409
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Schneider B, Parker S, Valenti M, Farrell G, Kanow G. Response bias in category and magnitude estimation of difference and similarity for loudness and pitch. J Exp Psychol Hum Percept Perform 1978; 4:483-96. [PMID: 681892 DOI: 10.1037/0096-1523.4.3.483] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Interval scales of sensory magnitude were derived from magnitude and category estimates of loudness differences, loudness similarities, pitch differences, and pitch similarities. In each of the four loudness experiments, a loudness scale was constructed from a nonmetric analysis of the rank order of the judgments. The four loudness scales so constructed were found to be equivalent to one another and indicated that loudness was a power function of sound pressure with an exponent of .29. A similar analysis for the four pitch experiments found the pitch scales derived in each case to be equivalent to one another and linear with the mel scale of pitch. Thus the same sensory and similarities for two distinct perceptual continua. For both pitch and loudness, these sensory scales were used to generate scales of sensory differences. A comparison of the category and magnitude estimates of sensory differences with the scale of sensory differences derived from the nonmetric analyses indicated the presence of significant response biases in both category and magnitude estimation procedures.
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410
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Affiliation(s)
- Daniel K. Winstead
- Department of Psychiatry and Neurology, 130th General Hospital, Nurnberg, Germany, APO New York 09696
| | - S. Parker
- Department of Psychiatry and Neurology, 130th General Hospital, Nurnberg, Germany, APO New York 09696
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411
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Winstead DK, Parker S. The military prisoner: psychopathology and patterns of drug abuse. Mil Med 1977; 142:362-4. [PMID: 405627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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412
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Presant CA, Parker S. Enhanced DNA synthesis in isolated calf lymph node lymphocyte cultures. Clin Exp Immunol 1977; 27:183-9. [PMID: 139220 PMCID: PMC1540918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Calf sub-mandibular lymph node lymphocytes and human peripheral blood lymphocytes were oxidized by NaIO4. In liquid cell cultures, both types of cells were transformed with enhanced DNA synthesis. In mixed lymphocyte cultures, untreated human lymphocytes were transformed by irradiated-oxidized human cells. However, untreated calf lymphocytes were not transformed by irradiated-oxidized calf cells. Either human or calf lymphocytes were isolated from cell-cell interaction in agarose on slides. After 2-3 days of culture, cells were pulsed with tritiated thymidine. Autoradiography indicated greater numbers of cells with active DNA synthesis in NaIO4-oxidized calf cells and in calf cells incubated with Phaseolus vulgaris E-PHA compared to untreated lymphocytes. Similarly treated human cells did not show any increase in the numbers of cells with active DNA synthesis. No enhancement of DNA synthesis was seen in oxidized calf cells which were reduced with NaBH4 or cultured with hydroxyurea. In these restricted in vitro systems, calf cells are 'transformed' independent of cell-cell interaction, while human cells are not.
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413
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SaVille WA, Blonder R, Kerin N, Goldberg M, Scherf J, Parker S, Kalavathy A, Rubenfire M, Sa Ville WA. CARDIOVASCULAR RISK PROFILE. Med Sci Sports Exerc 1977. [DOI: 10.1249/00005768-197721000-00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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414
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Farber E, Parker S, Gruenstein M. The resistance of putative premalignant liver cell populations, hyperplastic nodules, to the acute cytotoxic effects of some hepatocarcinogens. Cancer Res 1976; 36:3879-87. [PMID: 975037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The hypothesis that liver carcinogenesis may have as an important facet the early selection of carcinogen-resistant cells was tested in animals in which putative premalignant hepatocyte populations, hyperplastic nodules, were induced by 2-acetylaminofluorene or by ethionine. Hyperplastic nodules were observed to be resistant to the acute necrogenic effects of 2 hepatotoxins, CCl4 and dimethylnitrosamine, under conditions in which liver cell necrosis occurred in the liver surrounding the nodules. In addition, although [methyl-3H]dimethylnitrosamine was taken up to an equal degree in nodules and normal liver, the interactions with DNA, RNA, and protein in hyperplastic nodules were found to be about 50% less than in control liver. Hyperplastic nodules showed a marked decrease in uptake of [9-14C]-2-acetylaminofluorene, a finding that could account for the large decrease in labeling of DNA, RNA, and protein by [9-14C]-2acetylaminofluorene observed in the nodules. The results are consistent with and support the hypothesis that new hepatocyte populations that appear prior to cancer, during liver carcinogenesis, have as an important biological property a resistance to the cytotoxic effect of hepatocarcinogens. The basis for this resistance might be a decrease in uptake and/or a reduction in the level of activation of carcinogens.
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415
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416
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Presant CA, Parker S. Surface alterations in calf lymphocytes oxidized by sodium periodate. J Biol Chem 1976; 251:1864-70. [PMID: 178647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In order to investigate alterations in surface structure in transformed lymphocytes, calf submandibular lymph node cell suspensions were oxidized with NaIO4. Oxidezed lymphocytes were morphologically transformed and had higher rates of DNA synthesis by 2 days after treatment. These results were prevented by reduction of the cell suspension with NaBH4, or by neuraminidase treatment of cells prior to oxidation. The amount of 125I-labeled Agaricus bisporus lectin bound to cells immediately after oxidation and the affinity constant for binding were increased over 2-fold, while cells immediately following oxidation and reduction showed decreased receptors with still higher affinity for the lectin compared to untreated cells. The amount of Phaseolus vulgaris lectin bound to oxidezed cells was also increased, but affinity was unchanged. Immediately following oxidation and reduction, these receptor sites were unchanged in number and affinity from untreated cells. In contrast, the number and affinity of receptors for concanavalin A were not changed immediately after oxidation or oxidation and reduction. In order to define the extent of compositional changes in surface glycoprotein receptors, plasma membranes were isolated from frozen calf submandibular lymph nodes. Compared to untreated plasma membranes, oxidezed membranes had similar contents of galactose, mannose, N-acetylglucosamine, N-acetylgalactosamine, fucose, and amino acids. Sialic acid content of oxidized membranes was reduced when measured by thiobarbituric acid assay. Sialic acids of untreated plasma membranes co-chromatographed with N-glycolylneurominic acid and N-acetylneuraminic acid, while those of oxidized membranes co-chromatographed with N-glycolylneuraminic acid and 5-acetamido-3,5-dideoxy-L-arabino-7-aldehydo-2-heptulosonic acid. Therefore, specific surface conformational changes in certain classes of membrane glycoproteins are associated with mild Malapradian oxidation of membrane sialic acids. These temporally precede NaIO4-induced transformation of calf lymphocytes. This is consistent with an hypothesis of membrane-mediated stimulation of lymphocyte transformation.
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417
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418
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Allen BR, Parker S, Thompson GG, Moore MR, Darby FJ, Hunter JA. The effect of treatment on plasma uroporphyrin levels in cutaneous hepatic porphyria. Br J Dermatol 1975; 93:37-42. [PMID: 1191527 DOI: 10.1111/j.1365-2133.1975.tb06473.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Seven patients undergoing treatment for cutaneous hepatic porphyria had serial measurements of their plasma uroporphyrin. In each case there was a progressive fall during treatment but even in remission the levels did not return to normal. There was a significant correlation between urinary and plasma uroporphyrin concentrations.
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419
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Parker S, Schneider B, Kanow G. Ratio scale measurement of the perceived lengths of lines. J Exp Psychol Hum Percept Perform 1975; 104:121-9. [PMID: 1194865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In Experiments 1 and 2, magnitude and category estimates of perceived line length difference were used to rank order 36 pairs of lines with respect to the psychological length difference between the lines forming a pair. In Experiment 3 magnitude estimates of line length ratios were used to order the same 36 pairs with respect to the psychological length ratio between the lines comprising a pair. A nonmetric analysis of the rank-order of the difference and ratio judgments was used to construct a ratio scale of perceived line length. Perceived line length was found to be a power function of physical line length with an exponent of .46. In Experiments 4 and 5, magnitude and category estimates of line length similarity were obtained. A nonmetric analysis of these data indicated that similarity judgments were monotonic inverses of judgments of psychological ratios.
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420
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Moore MR, Thompson GG, Allen BR, Hunter JA, Parker S. Plasma porphyrin concentrations in porphyria cutanea tarda. Clin Sci Mol Med 1973; 45:711-4. [PMID: 4759516 DOI: 10.1042/cs0450711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
1. Plasma porphyrin concentrations in twelve patients with porphyria cutanea tarda (symptomatica) were compared with twenty normal controls.
2. The concentrations in porphyria cutanea tarda were significantly elevated.
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421
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Parker S. Marfan's syndrome. A review of literature and case report. J Okla State Dent Assoc 1973; 64:15-6. [PMID: 4534952] [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: 01/11/2023]
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422
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Harris F, Katsura T, Parker S, Peterson V, Ellsworth R, Yodh G, Allison W, Brooks C, Cobb J, Mulvey J. The experimental identification of individual particles by the observation of transition radiation in the X-ray region. ACTA ACUST UNITED AC 1973. [DOI: 10.1016/0029-554x(73)90375-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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423
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Fuzesy R, Jaros J, Kaufman L, Marriner J, Parker S, Perez-Mendez V, Redner S. A gas mixture for multi-wire chambers with high proportional gain. ACTA ACUST UNITED AC 1972. [DOI: 10.1016/0029-554x(72)90693-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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424
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Parker S. The medical history, why? J Okla State Dent Assoc 1971; 62:30-3. [PMID: 5287594] [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: 01/14/2023]
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425
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Parker S. Survey of Nebraska dentists using topical fluoride. Chronicle 1969; 33:49-50. [PMID: 5258959] [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: 01/14/2023]
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426
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Ishmael WE, Parker S. Terminal oral manifestations of chronic myelogenous leukemia: a case report. J Okla State Dent Assoc 1969; 60:34-6. [PMID: 5307980] [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: 01/14/2023]
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427
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428
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