551
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Thompson S, Rennie CM, Maddy AH. A re-evaluation of the surface complexity of the intact erythrocyte. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 600:756-68. [PMID: 7407144 DOI: 10.1016/0005-2736(80)90478-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Surface proteins and glycoproteins of intact human red blood cells were labelled with 125I by the lactoperoxidase method. The radioactive proteins were then separated in each of the Fairbanks and Laemmli one-dimensional polyacrylamide gel electrophoresis systems. The radioactive polypeptides had different mobilities in the two systems, largely due to the anomalous migration of glycoproteins in polyacrylamide gels. A two-dimensional system was therefore developed using the Fairbanks and Laemmli buffer systems to exploit these anomalies. This procedure clearly resolved radioactive glycoproteins and proteins and enabled the identification of many more surface components than had previously proved possible.
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552
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Thompson S, Hancock IC, Baddiley J. The identification of polypeptides synthesised during the acquisition of teichoic acid synthetic activity in Bacillus licheniformis. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 630:537-44. [PMID: 7397237 DOI: 10.1016/0304-4165(80)90008-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An attempt has been made to identify proteins synthesised during induction of teichoic acid synthesis in Bacillus licheniformis ATCC 9945. The proteins are recognised as those produced on the change from teichuronic acid to teichoic acid synthesis that occurs after the transfer of the bacteria from phosphate-limited to phosphate-rich conditions. B. licheniformis was grown in phosphate-limiting conditions in the presence of threonine to stimulate threonine uptake. The bacteria were then transferred to phosphate-rich conditions and were pulse-labelled with [14C]threonine during the change to teichoic acid synthesis. All of the proteins were extracted from the cells with sodium dodecyl sulphate and were examined by sodium dodecyl sulphate-polyacrylamide gel elecstrophoresis. Radioactive polypeptides were identified by fluorography of the polyacrylamide gels. The radioactive polypeptides that were formed on change from teichuronic acid to teichoic acid synthesis were compared with the polypeptides present in a membrane sub-fraction that had high teichoic acid-synthesising activity. The labelling of nine polypeptides with [14C]threonine was dependent on new RNA synthesis. Of these nine polypeptides, five were also present in the membrane sub-fraction with the highest teichoic acid-synthesising activity.
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553
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Thompson S. Campaign--nutrition. Pass the mash. NURSING MIRROR 1980; 150:19-20. [PMID: 6899270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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554
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Streilein JW, Sullivan S, Thompson S. Contact hypersensitivity, humoral immunity, and specific unresponsiveness can be induced in Syrian hamsters with simple haptens. THE JOURNAL OF IMMUNOLOGY 1980. [DOI: 10.4049/jimmunol.124.2.577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Several inbred strains of Syrian hamsters have been immunized by skin painting with highly reactive haptens. Classical contact hypersensitivity has been assayed by the ear swelling response: the response is hapten-specific, exaggerated after re-immunization with the original hapten, and can be transferred adoptively to naive syngeneic hamsters with viable lymphoid cells, suggesting that contact hypersensitivity is mediated in hamsters by T lymphocytes. Moreover, skin painting with hapten induces significant serum titers of anti-hapten antibodies, indicating that antigen-specific B lymphocytes are also activated. Hamsters can be rendered unresponsive to these same haptens by conventional methods: 1) i.v. inoculation of the soluble hapten sulfonate or 2) inoculation of hapten-derivatized syngeneic lymphoid cells. Hamsters treated with these "tolerizing" maneuvers develop profound hapten-specific unresponsiveness that can be adoptively transferred to naive recipients with living lymphoid cells. "Unresponsive" animals, however, make strong anti-hapten antibody responses that rival the humoral immune responses found after skin sensitization. The data suggest that an active process is involved in the induction and maintenance of the unresponsive state, but responsibility can not be assigned firmly to putative suppressor T cells or to an antibody-mediated B suppressor modality.
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555
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Streilein JW, Sullivan S, Thompson S. Contact hypersensitivity, humoral immunity, and specific unresponsiveness can be induced in Syrian hamsters with simple haptens. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1980; 124:577-85. [PMID: 7356707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Several inbred strains of Syrian hamsters have been immunized by skin painting with highly reactive haptens. Classical contact hypersensitivity has been assayed by the ear swelling response: the response is hapten-specific, exaggerated after re-immunization with the original hapten, and can be transferred adoptively to naive syngeneic hamsters with viable lymphoid cells, suggesting that contact hypersensitivity is mediated in hamsters by T lymphocytes. Moreover, skin painting with hapten induces significant serum titers of anti-hapten antibodies, indicating that antigen-specific B lymphocytes are also activated. Hamsters can be rendered unresponsive to these same haptens by conventional methods: 1) i.v. inoculation of the soluble hapten sulfonate or 2) inoculation of hapten-derivatized syngeneic lymphoid cells. Hamsters treated with these "tolerizing" maneuvers develop profound hapten-specific unresponsiveness that can be adoptively transferred to naive recipients with living lymphoid cells. "Unresponsive" animals, however, make strong anti-hapten antibody responses that rival the humoral immune responses found after skin sensitization. The data suggest that an active process is involved in the induction and maintenance of the unresponsive state, but responsibility can not be assigned firmly to putative suppressor T cells or to an antibody-mediated B suppressor modality.
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556
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Rennie CM, Thompson S, Parker AC, Maddy A. Human erythrocyte fraction in "Percoll" density gradients. Clin Chim Acta 1979; 98:119-25. [PMID: 498523 DOI: 10.1016/0009-8981(79)90172-4] [Citation(s) in RCA: 128] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new rapid method for the age fractionation of human erythrocytes by centrifugation through a "Percoll" density gradient is described. The fractionation is demonstrated by density-related changes in the volume, haemoglobin concentration, pyruvate kinase and acetylcholine esterase activities and potassium contents of the erythrocytes, and the distribution of reticulocytes on the gradients.
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557
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Thompson S. A question of choice. NURSING MIRROR 1979; 149:27-9. [PMID: 257597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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558
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Thompson S. Nursing care study. Anorexia nervosa: hungry for knowledge - not food. NURSING MIRROR 1979; 149:29-32. [PMID: 257579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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559
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Chakrabarti R, Thompson S, Meade T. Comparison of variability of different methods of measuring fibrinolytic activity. Thromb Haemost 1979. [DOI: 10.1055/s-0038-1665654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The Northwick Park Heart Study has drawn attention to the variability, especially within-person, of the dilute blood clot lysis time (DBCLT). However, this method has considerable practical advantages in large-scale surveys. The variability of DBCLT has therefore been compared with that of the euglobulin lysis time (ELT) and the euglobulin fibrin plate area (EFPA). Each measurement has been made 10 times over a 9 month period in each of 12 healthy people; fibrinogen levels have also been measured. As expected, highly significant correlations (r) have been obtained between the three methods: DBCLT and ELT, + 0.63; DBCLT and EFPA, - 0.47; ELT and EFPA, - 0.54 (P<0.001 in each case). The between-person variance, distinguishing one person from another, accounts for 60% of the total variance in DBCLT, 35% in ELT and 10% in EFPA. For fibrinogen, the value is nearly 90%. The rest of the variance in each case is accounted for by biological within-person variation and laboratory error. Thus, while DBCLT is a variable method of determining an individual’s characteristic level of fibrinolytic activity, it is probably less so than other commonly used methods. The results of this experiment suggest that a previous estimate of the within-person variability of DBCLT (Meade and North, 1977, British Medical Bulletin, 33, 283) may have been too high.
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560
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Thompson S. Vital links: a ministry of calm. NURSING MIRROR 1979; 148:22-3. [PMID: 256086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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561
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Gardener M, Thompson S. Growing opportunities. NURSING MIRROR 1979; 148:20-1. [PMID: 254935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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562
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563
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Adams J, Kinney T, Thompson S, Rubin L, Helling RB. FREQUENCY-DEPENDENT SELECTION FOR PLASMID-CONTAINING CELLS OF ESCHERICHIA COLI. Genetics 1979; 91:627-37. [PMID: 17248902 PMCID: PMC1216856 DOI: 10.1093/genetics/91.4.627] [Citation(s) in RCA: 81] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
ABSTRACT
Colicin-producing plasmid-containing cells of E. coli exhibit frequency dependent selection when grown in glucose-limited continuous culture with the corresponding plasmid-free strain. The bases of this frequency-dependent effect are shown to be (1) the lower growth rate of the plasmid-containing strain under these conditions, and (2) the production of colicin, which attenuates the growth rate of the plasmid-free strain. These results are discussed in relationship to the maintenance of genetic variation in prokaryotes.
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564
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Thompson S, Eglinton G. The presence of pollutant hydrocarbons in estuarine epipelic diatom populations. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0302-3524(79)90106-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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565
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Thompson S. Why it is right for family planning nurses to prescribe the pill. NURSING MIRROR 1978; 147:9. [PMID: 250109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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566
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Thompson S. Account resolution. JOURNAL OF PATIENT ACCOUNT MANAGEMENT 1978:24-6. [PMID: 10239419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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567
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Thompson S. Cost awareness for the medical staff. JOURNAL OF PATIENT ACCOUNT MANAGEMENT 1978:1p. [PMID: 10239409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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568
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Vernick SH, Thompson S, Sonenshine DE, Collins LA, Saunders M, Homsher PJ. Ultrastructure of the foveal glands of the ticks, Dermacentor andersoni Stiles and D. variabilis (Say). J Parasitol 1978; 64:515-23. [PMID: 660384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The foveal glands of Dermacentor variabilis appear to consist of 2 cell types. The outer cells (Type I) are active, with large areas of abundant finely granular material, apparently precursors of the mature secretory granules. The inner cells (Type II) are apparently storage cells. They are highly vacuolated and contain coarsely granular material as well as presumably mature secretory granules. The foveal glands of D. andersoni contain only Type II cells with extensive accumulations of presumably mature secretory granules.
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569
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Johnson A, Thompson S, Vieweg WV, Daily P, Oury J, Peterson K. Evaluation of the in vivo function of the Hancock porcine xenograft in the aortic position. J Thorac Cardiovasc Surg 1978; 75:599-605. [PMID: 642555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We evaluated the vivo hemodynamic function of the stent-mounted glutaraldehyde-fixed porcine xenograft in 23 patients who had undergone aortic valve replacement from 2 days to 24 months prior to the study. Functional aortic valve orifice areas for the porcine xenograft ranged from 0.58 to 3.0 sq. cm., the average area being 1.36 sq. cm. Six patients had calculated prosthetic valve orifice areas less than 1.0 sq. cm. Valve orifice area did not correlate significantly with valve size or the time interval from surgery to postoperative study. Left ventricular stroke volume showed a significant, positive correlation with calculated xenograft orifice area. Systemic thromboembolism was not encountered. One patient required reoperation for xenograft stenosis caused by dense fibrin deposition on the aortic leaflets. We conclude that use of the stent-mounted glutaraldehyde-fixed porcine xenograft can be associated with significant functional stenosis which may be related to annulus size or inertial properties of the valve. These factors should be taken into consideration when considering use of the stent-mounted glutaraldehyde-fixed porcine xenograft in individual patients.
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570
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Thompson S, Wiberg JS. Late effect of bacteriophage T4D on the permeability barrier of Escherichia coli. J Virol 1978; 25:491-9. [PMID: 342725 PMCID: PMC353961 DOI: 10.1128/jvi.25.2.491-499.1978] [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
Cold centrifugation of lysis-inhibited Escherichia coli B infected with wild-type T4D results in extensive lysis beginning around 20 min after infection at 37 degrees C. Infection with an e mutant, which fails to make lysozyme, prevents lysis, but does not prevent a marked loss of K+ and Mg3+. The t gene product, thought to disrupt the cytoplasmic membrane in natural lysis, is not required for this handling-induced cation loss or lysis. Three lines of evidence argue that late protein synthesis is required to develop this potential for cation loss; the potential does not develop in infections by: (i) mutants defective in DNA synthesis, (ii) mutants defective in gene 55, and (iii) wild-type T4 when chloramphenicol is added at 6 min after infection. All late mutants examined, which are blocked in the major pathways of morphogenesis, do not prevent development of the potential. The evidence argues for a new, late effect of T4 infection on the cytoplasmic membrane.
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571
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Abstract
The osmotic properties of human lymphocytes isolated from 15 ml of venous blood were examined. Measurements of the permeability of the membrane to water under an osmotic gradient were also made. The Boyle-Van't Hoff relation held very well for the human lymphocyte when the cells were shrunken in hyperosmotic media to concentrations twice isosmotic. The volume of osmotically inactive material or "b" value averaged 32% of the mean corpuscular volume. These values were independent of temperature. Ponder's R ranged between 0.8 and 0.9. The average value for Lp, the hydralic coefficient was 0.46 mu/min atm +/- 0.02 (S.E.M.) at 25 degrees C. No significant effect of age, sex, or race was noted. The effect of temperature between 10 degrees C and 37 degrees C was measured and heats of activation between 11.1 and 17.4 kcal/mole were calculated with a mean of 14.1 kcal/mole +/- 1.6 (S.E.M.). Concanavalin A at 10 microgram/1.5 X 10(6) lymphocytes produced blastogenesis of 25% or more of the lymphocytes without clumping, agglutination, or toxicity. The mean corpuscular volume increased by 21% after 72 hours due to an increase in the "b" value which increased by 80%. The volume of free water remained constant. Histograms of the distribution of cell volumes showed that volume changes were uniform throughout the population with no evidence of agglutination of clumping. The significance of these results is discussed in the context of membrane fluidity and the state of intracellular water.
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572
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Jessen RT, Thompson S, Smith EB. Cobb syndrome. ARCHIVES OF DERMATOLOGY 1977; 113:1587-90. [PMID: 931402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cobb syndrome consists of a vascular skin nevus associated with an angioma in the spinal cord. We describe a young man with this condition. To our knowledge, this is the 28th case reported. Cobb syndrome must be differentiated from other syndromes characterized by vascular cutaneous lesions associated with central nervous system abnormalities, such as Sturge-Weber, Osler-Weber-Rendu, Fabry-Anderson, von Hippel-Lindau, and ataxia telangiectasia.
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573
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Slaga TJ, Buty SG, Thompson S, Bracken WM, Viaje A. A kinetic study on the in vitro covalent binding of polycyclic hydrocarbons to nucleic acids using epidermal homogenates as the activating system. Cancer Res 1977; 37:3126-31. [PMID: 18279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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574
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Slaga TJ, Thompson S, Berry DL, Digiovanni J, Juchau MR, Viaje A. The effects of benzoflavones on polycyclic hydrocarbon metabolism and skin tumor initiation. Chem Biol Interact 1977; 17:297-312. [PMID: 407010 DOI: 10.1016/0009-2797(77)90093-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The effects of benzoflavones on skin tumor initiation by polycyclic hydrocarbons and epidermal aryl hydrocarbon hydroxylase were investigated. 7,8-Benzoflavone (7,8-BF) was found to be a potent inhibitor of the inhibition of skin tumors by 3-methylcholanthrene (MC) as well as 7,12-dimethylbenz(a)anthracene (DMBA). 5,6-Benzoflavone(5,6-BF) inhibited tumor initiation by MC and DMBA, but to a lesser degree than 7,8-BF. Dose-response studies of the capacity of 7,8-BF to inhibit DMBA tumor initiation revealed that 7,8-BF was an effective inhibitor at 2.5 microgram and a maximum inhibition of 90% occurred at 100 microgram of 7,8-FB. The tumor initiating ability of 7-hydroxymethyl-12-methylbenz(a)anthracene (7-OHMe-12MeBA) was not inhibited by 7,8-BF. Epidermal aryl hydrocarbon(benzo(a)pyrene hydroxylase(AHH) was increased by 5,6-BF and either had no effect or was slightly inhibited by 7,8-BF when given either topically or i.p. Both flavones when added directly to the assay tubes inhibited the in vitro epidermal AHH activity from control and MC pretreated mice by greater than 75%. When added in vitro, 7,8-BF and 5,6-BF inhibited epidermally mediated covalent binding of radioactive DMBA and dibenz(a,h)anthracene to DNA by 50% or more. The inhibition of skin tumor initiation by 7,8-BF and 5,6-BF appears to be partially related to its ability to inhibit the formation of electrophilic intermediates.
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575
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Slaga TJ, Thompson S, Schwarz JA. Binding of dexamethasone by the subcellular fractions of mouse epidermis and dermis. J Invest Dermatol 1977; 68:307-9. [PMID: 858945 DOI: 10.1111/1523-1747.ep12494574] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The binding of the potent anticarcinogenic agent, dexamethasone, to mouse epidermal and dermal subcellular fractions was investigated. When applied to mouse skin, 3H-labeled dexamethasone remained associated, after extensive dialysis, with epidermal and dermal cytosol, microsomes, microsomes, mitochondria, and chromatin. The specific activity of dexamethasone binding to these fractions was from 2 to 5 times as high in the epidermis as in the dermis. Epidermal chromatin had the highest specific activity fo binding. Dexamethasone was not associated with the cytosol protein receptor which was previously found to specifically bind tumor promoters and polycyclic hydrocarbon carcinogens.
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576
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Abstract
Anti-leukaemically active benzofuroxans were tested for mutagenicity in Salmonella typhimurium. Mutagenicity was not found to be correlated to the previously established anti-leukaemic activity. One anti-leukaemically inactive compound after exposure to liver microsomal enzymes proved the most mutagenic of the derivatives for TA100, whereas after similar treatment, the mutagenicity of the most potent anti-leukaemic compound was reduced. All twelve derivatives tested were mutagenic in a base-substitution strain which was defective in excision-repair and also carried a plasmid-linked repair deficiency. Mutagenicity of five dervatives was undetectable in strains proficient for one or the other of the above repair pathways. Nine of the benzofuroxans could also be detected as mutagens in the frameshift tester strain TA98.
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577
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Miller CE, Thompson S, Lozar J. A theoretical evaluation of cardiac output as a function of mean arterial pressure in the human cardiovascular system. J Theor Biol 1976; 63:89-98. [PMID: 1003999 DOI: 10.1016/0022-5193(76)90085-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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578
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Haus BF, Thompson S. The effect of nursing intervention on a program of behavior modification by parents in the home. JOURNAL OF PSYCHIATRIC NURSING AND MENTAL HEALTH SERVICES 1976; 14:9-16. [PMID: 59806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The purpose of the study was to determine if nursing intervention affects a program of behavior modification for neurologically impaired children carried out by parents in the home. Nine neurologically impaired subjects between the ages of two and four years were selected for programs of behavior modification by their parents at home. The nine subjects were randomly divided into an experimental and control group. The groups were generally matched for age and socioeconomic status. The four subjects in the experimental group were visited bi-weekly for a two-month period after the initial program was set up with changes, assessments and/or alterations made in the programs as necessary. The five subjects in the control group were visited at the beginning of the study to establish the programs of behavior modification the parents would implement. This group was not revisited until the end of the two-month period. The findings indicated a marked change in the subjects of the experimental group. This difference was significant on the basis of Wilcoxin Matched Pairs p. greater than .00003. In the control group only one child had any appreciable change in the specific target behavior, and it was not the desired goal.
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579
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Abstract
When anisocoria is present, the ophthalmologist knows that something is wrong. However, location of the lesion and diagnosis of the problem can be difficult. A step-by-step flow chart for diagnosis of unequal pupils is presented, with explantation of various signs and descriptions of appropriate diagnostic tests.
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580
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Thompson S, Eglinton G. The presence of pollutant hydrocarbons in estuarine epipelic diatom populations. ACTA ACUST UNITED AC 1976. [DOI: 10.1016/0302-3524(76)90016-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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581
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Buty SG, Thompson S, Slaga TJ. The role of epidermal aryl hydrocarbon hydroxylase in the covalent binding of polycyclic hydrocarbon to DNA and its relationship to tumor initiation. Biochem Biophys Res Commun 1976; 70:1102-8. [PMID: 821485 DOI: 10.1016/0006-291x(76)91016-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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582
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Thompson S, Slaga TJ. The effects of dexamethasone on mouse skin initiation and aryl hydrocarbon hydroxylase. Eur J Cancer 1976; 12:363-70. [PMID: 821758 DOI: 10.1016/0014-2964(76)90174-2] [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: 12/24/2022]
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583
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Abstract
Mouse skin contains a NADPH-dependent, aryl hydrocarbon hydroxylase (AHH), which is inducible by polycyclic aromatic hydrocarbons. In general, unsubstituted polycyclic hydrocarbons caused a greater induction of epidermal AHH than substituted one (1,2,3,4-dibenzanthracene greater than 1,2,5,6-dibenzanthracene greater than benz (a)anthracene equal 3-methylcholanthrene greater than 7,12-dimethlbenz (a)anthracene) which did not correlate with their ability to initiate tumors in mouse skin. Two different techniques were used to isolate epidermis and similar results were obtained with both. However, the technique of isolating epidermis using a mild heat treatment required that the temperature be maintained at 52 degrees C for 30 sec. If the temperature was raised to 54 degrees C or above, there was a large reduction in the AHH activity. Isolated epidermis has 4 to 5 times the AHH activity as dermis and about twice that of whole skin. This was true for control mice or mice in which AHH was induced by pretreatment with benz(a)anthracene.
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584
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Sciorra LJ, Maier R, Thompson S, Kaufmann BN. An analysis of the uncoiling effect of a BHT-Tween 80/absolute ethanol mixture on VelbanR arrested human metaphase cells. CYTOLOGIA 1976; 41:63-73. [PMID: 971593 DOI: 10.1508/cytologia.41.63] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
MESH Headings
- Butylated Hydroxytoluene/pharmacology
- Chromosomes, Human, 1-3
- Chromosomes, Human, 13-15
- Chromosomes, Human, 16-18
- Chromosomes, Human, 4-5
- Chromosomes, Human, 6-12 and X
- Cresols/pharmacology
- Depression, Chemical
- Ethanol
- Humans
- Lectins/pharmacology
- Lymphocyte Activation
- Mitosis/drug effects
- Polyethylene Glycols/pharmacology
- Polysorbates/pharmacology
- Vinblastine/pharmacology
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585
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Melligott TF, Beck IT, Dinda PK, Thompson S. Correlation of structural changes at different levels of the jejunal villus with positive net water transport in vivo and in vitro. Can J Physiol Pharmacol 1975; 53:439-50. [PMID: 1148930 DOI: 10.1139/y75-063] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Experiments were done for indentification and localization of certain structural changes at different levels of jejunal villus of the hamster during positive and negative water transport across the intestine in vivo and in vitro. Positive transport occurred when the mucosal surface of the intestine was bathed (in vitro experiments) or perfused (in vivo experiments) with isotonic Krebs-Ringer bicarbonate solution containing 10 mM glucose, and negative water transport was achieved by rendering this solution hypertonic with 150 mM mannitol. Results indicate that during positive net water transport the intestine in vivo transported more fluid and exhibited a more conspicuous dilatation of the lateral intercellular spaces (L.I.S.) than did the in vitro preparation. Dilatation of the L.I.S. in both preparations was present only in the apical part of the villus, suggesting that this is the principal site of water absorption. When the mucosal solution was made hypertonic with mannitol, the L.I.S. in the in vivo intestine totally collapsed, whereas in the in vitro intestine these spaces remained open very slightly. These morphological changes correspond well with our finding that in the presence of the hypertonic mucosal solution there was a greater net negative water transport in vivo than in vitro. Incubation of the intestine in the isotonic mucosal solution produced subnuclear swelling of the mid-villus epithelial cells, and this morphological change was associated with an increase in the water content of the tissue. Perfusion of the in vivo intestine with the isotonic solution produced neither the swellings nor the increase in water content of the tissue. In the presence of hypertonic mucosal solution there was a water loss from the tissue both in vivo and in vitro, and these swellings were not observed. These results are discussed in relation to intestinal sugar transport and to the maturity of the epithelial cells, and it is concluded that transport studies on in vitro preparations may provide valid information on a qualitative basis, if not on a strictly quantitative basis.
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586
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Slaga TJ, Thompson S, Smuckler EA. Prolonged inhibition of mouse epidermal DNA synthesis by dexamethasone. J Natl Cancer Inst 1975; 54:931-6. [PMID: 1127722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The effect of dexamethasone, an anti-inflammatory agent that inhibits skin carcinogenesis, on DNA, RNA, and protein synthesis in mouse epidermis was investigated. Within 1 hour after the topical application of 75 mug dexamethasone to the skin of mice, epidermal DNA synthesis was inhibited drastically and lasted for approximately 5 days, followed by a biphasic stimulation at 7 and 10 days after treatment. Histologically, the skin after dexamethasone treatment revealed only subtle quantitative changes. The dermis was not altered. The epidermal thickness was unchanged, but the nuclei of the epidermal cells were more densely stained and the chromatin was more densely clumped. These changes were present by 12 hours and persisted for 10 days. Both epidermal RNA and protein syntheses were stimulated early, reached a peak of around 180% of controls at 1 hour, but returned to control levels by 3 hours. They were slightly inhibited between 3 and 12 hours after treatment and then returned to control levels. This prolonged inhibition of DNA synthesis by dexamethasone may be related to its anticarcinogenic effect.
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587
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Slaga TJ, Das SB, Rice JM, Thompson S. Fractionation of mouse epidermal chromatin components. J Invest Dermatol 1974; 63:343-9. [PMID: 4424714 DOI: 10.1111/1523-1747.ep12680807] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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588
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Slaga TJ, Scribner JD, Rice JM, Das SB, Thompson S. Inhibition by dexamethasone of intracellular binding of phorbol esters to mouse skin. J Natl Cancer Inst 1974; 52:1611-8. [PMID: 4831446 DOI: 10.1093/jnci/52.5.1611] [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: 01/12/2023] Open
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589
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Ray JF, Thompson S, Moallem S, Sanoudos GM, Yost L, Goodall CW, Clauss RH. Nomogram for estimating pulmonary arteriovenous shunt during ventilation with room air. J Thorac Cardiovasc Surg 1972; 64:611-7. [PMID: 5079577] [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]
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590
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591
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Drew RL, Thompson S, Pardoe GI. The immunogenicity of Proteus vulgaris OX 19 in the rabbit. PATHOLOGIA ET MICROBIOLOGIA 1972; 38:184-91. [PMID: 4114566 DOI: 10.1159/000162405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The relationship between the structure and conformation of an antigen (the Gram-negative organism, <i>Proteus vulgaris </i>OX 19 NCTC 8363) and that of its specific antibody in immune complexes is discussed with reference to the formation of anti-allotype and anti-idiotype antisera in rabbits.
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592
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Robson RD, Lewis D, Thompson S. Reflex and other cardiovascular changes in anesthetized dogs after beta adrenergic blockade. J Pharmacol Exp Ther 1971; 176:662-71. [PMID: 4398745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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593
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Thompson S. Dr. J. William Hillman. Dev Med Child Neurol 1970; 12:382-3. [PMID: 4914793] [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]
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594
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Thompson S. A temporary lumbo-sacral support. Physiotherapy 1969; 55:67. [PMID: 5775534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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595
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Fishbein L, Fawkes J, Falk HL, Thompson S. Thin-layer chromatography of rat bile and urine following intravenous administration of tropital-methylene-14C. J Chromatogr A 1967; 31:102-8. [PMID: 5585779 DOI: 10.1016/s0021-9673(01)86031-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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596
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Fishbein L, Fawkes J, Falk HL, Thompson S. Thin-layer chromatography of rat bile and urine following intravenous administration of safrole, isosafrole, and dihydrosafrole. J Chromatogr A 1967; 29:267-73. [PMID: 6058212 DOI: 10.1016/s0021-9673(00)92662-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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597
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Thompson S. What management expects from an occupational health team. OCCUPATIONAL HEALTH; A JOURNAL FOR OCCUPATIONAL HEALTH NURSES 1965; 17:255-65. [PMID: 5174824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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598
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Alpern M, Thompson S, Lee MS. Spectral transmittance of visible light by the living human eye. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA 1965; 55:723-7. [PMID: 4957899 DOI: 10.1364/josa.55.000723] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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599
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Thompson S. Treatment of Venereal Disease in the Field. West J Med 1939. [DOI: 10.1136/bmj.2.4115.1018-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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