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1P. K. Joshi ; T. Esko ; H. Mattsson ; N. Eklund ; I. Gandin ; T. Nutile ; A. U. Jackson ; C. Schurmann ; A. V. Smith ; W. Zhang ; Y. Okada ; A. Stancakova ; J. D. Faul ; W. Zhao ; T. M. Bartz ; M. P. Concas ; N. Franceschini ; S. Enroth ; V. Vitart ; S. Trompet ; X. Guo ; D. I. Chasman ; J. R. O'Connel ; T. Corre ; S. S. Nongmaithem ; Y. Chen ; M. Mangino ; D. Ruggiero ; M. Traglia ; A. E. Farmaki ; T. Kacprowski ; A. Bjonnes ; A. van der Spek ; Y. Wu ; A. K. Giri ; L. R. Yanek ; L. Wang ; E. Hofer ; C. A. Rietveld ; O. McLeod ; M. C. Cornelis ; C. Pattaro ; N. Verweij ; C. Baumbach ; A. Abdellaoui ; H. R. Warren ; D. Vuckovic ; H. Mei ; C. Bouchard ; J. R. Perry ; S. Cappellani ; S. S. Mirza ; M. C. Benton ; U. Broeckel ; S. E. Medland ; P. A. Lind ; G. Malerba ; A. Drong ; L. Yengo ; L. F. Bielak ; D. Zhi ; P. J. van der Most ; D. Shriner ; R. Magi ; G. Hemani ; T. Karaderi ; Z. Wang ; T. Liu ; I. Demuth ; J. H. Zhao ; W. Meng ; L. Lataniotis ; S. W. van der Laan ; J. P. Bradfield ; A. R. Wood ; A. Bonnefond ; T. S. Ahluwalia ; L. M. Hall ; E. Salvi ; S. Yazar ; L. Carstensen ; H. G. de Haan ; M. Abney ; U. Afzal ; M. A. Allison ; N. Amin ; F. W. Asselbergs ; S. J. Bakker ; R. G. Barr ; S. E. Baumeister ; D. J. Benjamin ; S. Bergmann ; E. Boerwinkle ; E. P. Bottinger ; A. Campbell ; A. Chakravarti ; Y. Chan ; S. J. Chanock ; C. Chen ; Y. D. Chen ; F. S. Collins ; J. Connell ; A. Correa ; L. A. Cupples ; G. D. Smith ; G. Davies ; M. Dorr ; G. Ehret ; S. B. Ellis ; B. Feenstra ; M. F. Feitosa ; I. Ford ; C. S. Fox ; T. M. Frayling ; N. Friedrich ; F. Geller ; G. Scotland ; I. Gillham-Nasenya ; O. Gottesman ; M. Graff ; F. Grodstein ; C. Gu ; C. Haley ; C. J. Hammond ; S. E. Harris ; T. B. Harris ; N. D. Hastie ; N. L. Heard-Costa ; K. Heikkila ; L. J. Hocking ; G. Homuth ; J. J. Hottenga ; J. Huang ; J. E. Huffman ; P. G. Hysi ; M. A. Ikram ; E. Ingelsson ; A. Joensuu ; A. Johansson ; P. Jousilahti ; J. W. Jukema ; M. Kahonen ; Y. Kamatani ; S. Kanoni ; S. M. Kerr ; N. M. Khan ; P. Koellinger ; H. A. Koistinen ; M. K. Kooner ; M. Kubo ; J. Kuusisto ; J. Lahti ; L. J. Launer ; R. A. Lea ; B. Lehne ; T. Lehtimaki ; D. C. Liewald ; L. Lind ; M. Loh ; M. L. Lokki ; S. J. London ; S. J. Loomis ; A. Loukola ; Y. Lu ; T. Lumley ; A. Lundqvist ; S. Mannisto ; P. Marques-Vidal ; C. Masciullo ; A. Matchan ; R. A. Mathias ; K. Matsuda ; J. B. Meigs ; C. Meisinger ; T. Meitinger ; C. Menni ; F. D. Mentch ; E. Mihailov ; L. Milani ; M. E. Montasser ; G. W. Montgomery ; A. Morrison ; R. H. Myers ; R. Nadukuru ; P. Navarro ; M. Nelis ; M. S. Nieminen ; I. M. Nolte ; G. T. O'Connor ; A. Ogunniyi ; S. Padmanabhan ; W. R. Palmas ; J. S. Pankow ; I. Patarcic ; F. Pavani ; P. A. Peyser ; K. Pietilainen ; N. Poulter ; I. Prokopenko ; S. Ralhan ; P. Redmond ; S. S. Rich ; H. Rissanen ; A. Robino ; L. M. Rose ; R. Rose ; C. Sala ; B. Salako ; V. Salomaa ; A. P. Sarin ; R. Saxena ; H. Schmidt ; L. J. Scott ; W. R. Scott ; B. Sennblad ; S. Seshadri ; P. Sever ; S. Shrestha ; B. H. Smith ; J. A. Smith ; N. Soranzo ; N. Sotoodehnia ; L. Southam ; A. V. Stanton ; M. G. Stathopoulou ; K. Strauch ; R. J. Strawbridge ; M. J. Suderman ; N. Tandon ; S. T. Tang ; K. D. Taylor ; B. O. Tayo ; A. M. Toglhofer ; M. Tomaszewski ; N. Tsernikova ; J. Tuomilehto ; A. G. Uitterlinden ; D. Vaidya ; A. van Hylckama Vlieg ; J. van Setten ; T. Vasankari ; S. Vedantam ; E. Vlachopoulou ; D. Vozzi ; E. Vuoksimaa ; M. Waldenberger ; E. B. Ware ; W. Wentworth-Shields ; J. B. Whitfield ; S. Wild ; G. Willemsen ; C. S. Yajnik ; J. Yao ; G. Zaza ; X. Zhu ; R. M. Salem ; M. Melbye ; H. Bisgaard ; N. J. Samani ; D. Cusi ; D. A. Mackey ; R. S. Cooper ; P. Froguel ; G. Pasterkamp ; S. F. Grant ; H. Hakonarson ; L. Ferrucci ; R. A. Scott ; A. D. Morris ; C. N. Palmer ; G. Dedoussis ; P. Deloukas ; L. Bertram ; U. Lindenberger ; S. I. Berndt ; C. M. Lindgren ; N. J. Timpson ; A. Tonjes ; P. B. Munroe ; T. I. Sorensen ; C. N. Rotimi ; D. K. Arnett ; A. J. Oldehinkel ; S. L. Kardia ; B. Balkau ; G. Gambaro ; A. P. Morris ; J. G. Eriksson ; M. J. Wright ; N. G. Martin ; S. C. Hunt ; J. M. Starr ; I. J. Deary ; L. R. Griffiths ; H. Tiemeier ; N. Pirastu ; J. Kaprio ; N. J. Wareham ; L. Perusse ; J. G. Wilson ; G. Girotto ; M. J. Caulfield ; O. Raitakari ; D. I. Boomsma ; C. Gieger ; P. van der Harst ; A. A. Hicks ; P. Kraft ; J. Sinisalo ; P. Knekt ; M. Johannesson ; P. K. Magnusson ; A. Hamsten ; R. Schmidt ; I. B. Borecki ; E. Vartiainen ; D. M. Becker ; D. Bharadwaj ; K. L. Mohlke ; M. Boehnke ; C. M. van Duijn ; D. K. Sanghera ; A. Teumer ; E. Zeggini ; A. Metspalu ; P. Gasparini ; S. Ulivi ; C. Ober ; D. Toniolo ; I. Rudan ; D. J. Porteous ; M. Ciullo ; T. D. Spector ; C. Hayward ; J. Dupuis ; R. J. Loos ; A. F. Wright ; G. R. Chandak ; P. Vollenweider ; A. R. Shuldiner ; P. M. Ridker ; J. I. Rotter ; N. Sattar ; U. Gyllensten ; K. E. North ; M. Pirastu ; B. M. Psaty ; D. R. Weir ; M. Laakso ; V. Gudnason ; A. Takahashi ; J. C. Chambers ; J. S. Kooner ; D. P. Strachan ; H. Campbell ; J. N. Hirschhorn ; M. Perola ; O. Polasek ; J. F. Wilson
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-07-02Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Biological Evolution ; Blood Pressure/genetics ; Body Height/*genetics ; Cholesterol, LDL/genetics ; *Cognition ; Cohort Studies ; Educational Status ; Female ; Forced Expiratory Volume/genetics ; Genome, Human/genetics ; *Homozygote ; Humans ; Lung Volume Measurements ; Male ; PhenotypePublished by: -
2A. Okbay ; J. P. Beauchamp ; M. A. Fontana ; J. J. Lee ; T. H. Pers ; C. A. Rietveld ; P. Turley ; G. B. Chen ; V. Emilsson ; S. F. Meddens ; S. Oskarsson ; J. K. Pickrell ; K. Thom ; P. Timshel ; R. de Vlaming ; A. Abdellaoui ; T. S. Ahluwalia ; J. Bacelis ; C. Baumbach ; G. Bjornsdottir ; J. H. Brandsma ; M. Pina Concas ; J. Derringer ; N. A. Furlotte ; T. E. Galesloot ; G. Girotto ; R. Gupta ; L. M. Hall ; S. E. Harris ; E. Hofer ; M. Horikoshi ; J. E. Huffman ; K. Kaasik ; I. P. Kalafati ; R. Karlsson ; A. Kong ; J. Lahti ; S. J. van der Lee ; C. deLeeuw ; P. A. Lind ; K. O. Lindgren ; T. Liu ; M. Mangino ; J. Marten ; E. Mihailov ; M. B. Miller ; P. J. van der Most ; C. Oldmeadow ; A. Payton ; N. Pervjakova ; W. J. Peyrot ; Y. Qian ; O. Raitakari ; R. Rueedi ; E. Salvi ; B. Schmidt ; K. E. Schraut ; J. Shi ; A. V. Smith ; R. A. Poot ; B. St Pourcain ; A. Teumer ; G. Thorleifsson ; N. Verweij ; D. Vuckovic ; J. Wellmann ; H. J. Westra ; J. Yang ; W. Zhao ; Z. Zhu ; B. Z. Alizadeh ; N. Amin ; A. Bakshi ; S. E. Baumeister ; G. Biino ; K. Bonnelykke ; P. A. Boyle ; H. Campbell ; F. P. Cappuccio ; G. Davies ; J. E. De Neve ; P. Deloukas ; I. Demuth ; J. Ding ; P. Eibich ; L. Eisele ; N. Eklund ; D. M. Evans ; J. D. Faul ; M. F. Feitosa ; A. J. Forstner ; I. Gandin ; B. Gunnarsson ; B. V. Halldorsson ; T. B. Harris ; A. C. Heath ; L. J. Hocking ; E. G. Holliday ; G. Homuth ; M. A. Horan ; J. J. Hottenga ; P. L. de Jager ; P. K. Joshi ; A. Jugessur ; M. A. Kaakinen ; M. Kahonen ; S. Kanoni ; L. Keltigangas-Jarvinen ; L. A. Kiemeney ; I. Kolcic ; S. Koskinen ; A. T. Kraja ; M. Kroh ; Z. Kutalik ; A. Latvala ; L. J. Launer ; M. P. Lebreton ; D. F. Levinson ; P. Lichtenstein ; P. Lichtner ; D. C. Liewald ; A. Loukola ; P. A. Madden ; R. Magi ; T. Maki-Opas ; R. E. Marioni ; P. Marques-Vidal ; G. A. Meddens ; G. McMahon ; C. Meisinger ; T. Meitinger ; Y. Milaneschi ; L. Milani ; G. W. Montgomery ; R. Myhre ; C. P. Nelson ; D. R. Nyholt ; W. E. Ollier ; A. Palotie ; L. Paternoster ; N. L. Pedersen ; K. E. Petrovic ; D. J. Porteous ; K. Raikkonen ; S. M. Ring ; A. Robino ; O. Rostapshova ; I. Rudan ; A. Rustichini ; V. Salomaa ; A. R. Sanders ; A. P. Sarin ; H. Schmidt ; R. J. Scott ; B. H. Smith ; J. A. Smith ; J. A. Staessen ; E. Steinhagen-Thiessen ; K. Strauch ; A. Terracciano ; M. D. Tobin ; S. Ulivi ; S. Vaccargiu ; L. Quaye ; F. J. van Rooij ; C. Venturini ; A. A. Vinkhuyzen ; U. Volker ; H. Volzke ; J. M. Vonk ; D. Vozzi ; J. Waage ; E. B. Ware ; G. Willemsen ; J. R. Attia ; D. A. Bennett ; K. Berger ; L. Bertram ; H. Bisgaard ; D. I. Boomsma ; I. B. Borecki ; U. Bultmann ; C. F. Chabris ; F. Cucca ; D. Cusi ; I. J. Deary ; G. V. Dedoussis ; C. M. van Duijn ; J. G. Eriksson ; B. Franke ; L. Franke ; P. Gasparini ; P. V. Gejman ; C. Gieger ; H. J. Grabe ; J. Gratten ; P. J. Groenen ; V. Gudnason ; P. van der Harst ; C. Hayward ; D. A. Hinds ; W. Hoffmann ; E. Hypponen ; W. G. Iacono ; B. Jacobsson ; M. R. Jarvelin ; K. H. Jockel ; J. Kaprio ; S. L. Kardia ; T. Lehtimaki ; S. F. Lehrer ; P. K. Magnusson ; N. G. Martin ; M. McGue ; A. Metspalu ; N. Pendleton ; B. W. Penninx ; M. Perola ; N. Pirastu ; M. Pirastu ; O. Polasek ; D. Posthuma ; C. Power ; M. A. Province ; N. J. Samani ; D. Schlessinger ; R. Schmidt ; T. I. Sorensen ; T. D. Spector ; K. Stefansson ; U. Thorsteinsdottir ; A. R. Thurik ; N. J. Timpson ; H. Tiemeier ; J. Y. Tung ; A. G. Uitterlinden ; V. Vitart ; P. Vollenweider ; D. R. Weir ; J. F. Wilson ; A. F. Wright ; D. C. Conley ; R. F. Krueger ; G. Davey Smith ; A. Hofman ; D. I. Laibson ; S. E. Medland ; M. N. Meyer ; M. Johannesson ; P. M. Visscher ; T. Esko ; P. D. Koellinger ; D. Cesarini ; D. J. Benjamin
Nature Publishing Group (NPG)
Published 2016Staff ViewPublication Date: 2016-05-27Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Staff View
Publication Date: 2018-05-11Publisher: American Heart Association (AHA)Print ISSN: 1942-325XElectronic ISSN: 1942-3268Topics: MedicineKeywords: Electrophysiology, Epidemiology, Genetic, Association StudiesPublished by: -
4Zhou, Y., Smith, B. H., Sharpee, T. O.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-08-30Publisher: American Association for the Advancement of Science (AAAS)Electronic ISSN: 2375-2548Topics: Natural Sciences in GeneralPublished by: -
5Staff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The present work was undertaken to determine, first, whether there is a difference in the ease of dispersion of a sheared surface soil when saturated with Mg rather than Ca ions; second, to show directly, by the addition of organic compounds to the oxidized clay fraction extracted from the surface ...Type of Medium: Electronic ResourceURL: -
6Staff View
ISSN: 0010-7476Topics: EducationURL: -
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ISSN: 0010-7476Topics: EducationURL: -
8Ben-Shahar, Y. ; Thompson, C. K. ; Hartz, S. M. ; Smith, B. H. ; Robinson, G. E.
Springer
Published 2000Staff ViewISSN: 1435-9456Keywords: Key words Proboscis extension reflex ; Associative learning ; Social insectsSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract We studied the association between honey bee (Apis mellifera) division of labor and performance on an olfactory reversal-learning test. Manipulations of colony age structure and flight experience were used to test whether differences in performance are associated with age, current behavioral state, or flight experience. Nurse bees showed significantly faster rates of extinction to a learned odor than did foragers. This difference was associated primarily with differences in behavioral state, rather than age; it was seen when comparing nurses and foragers from typical colonies and normal-age nurses and precocious foragers from single-cohort colonies. Differences in extinction rate were not related to differences in flight experience; there was no difference between foragers and foraging-age bees denied flight experience. These results suggest that changes in learning and memory occur in association with division of labor. We speculate on the possible functional significance of the difference in extinction rate between nurses and foragers.Type of Medium: Electronic ResourceURL: -
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ISSN: 1572-8889Keywords: hygienic behavior ; discrimination conditioning ; honey bees ; Apis Mellifera ; olfactionSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract To understand the effect of abnormal brood odors on the initiation or control of hygienic behavior in honey bees, we employed the associative learning paradigm, proboscis extension reflex conditioning. Bees from two genetic lines(hygienic and non-hygienic) were able to discriminate between high concentrations of two floral odors equally well. Differential discrimination abilities were observed between the two lines when healthy and diseased brood odors were used, with the bees from the hygienic line discriminating between the pair of brood odors better than the non-hygienic bees. These results suggest that hygienic behavior in individual bees is associated with the bees' responses to olfactory stimuli emanating from diseased brood.Type of Medium: Electronic ResourceURL: -
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ISSN: 1432-1351Keywords: Honey bee ; Sting response ; Motor control ; Ventral nerve cord ; Maturation ; CasteSource: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Abstract Stinging behavior has been extensively studied in honey bees at the level of the individual, that is, in terms of stimuli that release stinging in adult bees, and in terms of integration of individual behavior into colony defense. Yet very little is known about the physiological basis for this behavior. Using an isolated abdominal preparation factors that influence peripheral control of the sting extension response are analyzed. Results show that: 1. Electromyogram activity released by severing the ventral nerve cord changed during the first few days of adult life but not later. Abdomens from older bees (nurses, guards, foragers) showed significantly higher EMG activity than newly emerged or 24 h-old bees. 2. The reflex “matured” over 5–7 days after emergence as an adult. 3. Younger bees (≤24h) had a lower threshold for initiating sting extension than older bees. However, the threshold for initiating the full sting response, i.e., extension and venom pumping, did not differ due to age. 4. Caste status was not correlated to any of the parameters of sting extension, indicating that any effect of caste on stinging behavior must arise in more anterior ganglia and/or in the brain.Type of Medium: Electronic ResourceURL: -
11Shitara, N. ; McKeever, P. E. ; Whang-Peng, J. ; Knutsen, T. ; Smith, B. H. ; Kornblith, P. L.
Springer
Published 1983Staff ViewISSN: 1432-0533Keywords: Cytogenetics ; Flowcytometry ; T/E ratio ; Astrocytomas cultureSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Summary Five human cell lines cultured from high- and low-grade astrocytomas in cerebral hemisphere have been analyzed for DNA and protein distribution by flowcytometric (FCM) and correlated with cytogenetic profiles. Simultaneous calibration with chicken erythrocytes as a co-running standard provided an estimate of chromosomal number of predominate stem cells of each cell line by the ratio of the DNA content of the major peak (G1) to that of chicken erythrocyte (T/E ratio) of FCM. Various lines had different distributions of chromosomal number, ranging from near diploid to tetraploid. Each line had a stem-cell population and chromosomal markers indicative of clonal selection, but no common marker specific to astrocytomas. The histogram of DNA distribution obtained by FCM correlated well with the chromosomal distribution by cytogenetic analysis. In addition, simultaneous measurement of protein and DNA content in multidimensional FCM demonstrated a sigmoid configuration of the profiles, which indicated a gradual increase of protein content associated with an increase of chromosomal number or with progression of cell cycle. To avoid confusion of a bimodal chromosomal distribution with the G2/M phase of the cell cycle, and to determine chromosomal numbers associated with a DNA histogram, simultaneous cytogenetic and FCM study are required. More rapid than cytogenetic analysis, the T/E ratio allows estimation of chromosomal number of the stem-cell population associated with DNA histograms of cultured glioma-derived cell lines.Type of Medium: Electronic ResourceURL: -
12McKeever, P. E. ; Laverson, S. ; Kornblith, P. L. ; Howard, R. ; Quindlen, E. A. ; Smith, B. H. ; Chronwall, B. M.
Springer
Published 1982Staff ViewISSN: 1432-0533Keywords: GFAP ; Glioma ; Biopsy ; Astrocytoma ; CNS tumorSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Summary Immunofluorescent staining for glial fibrillary acidic protein (GFAP) has been used as part of the diagnostic evaluation of eleven patients and compared with routine special stains. In one case, a difficult fibrillary neoplasm of the spinal cord, this diagnostic procedure provided rapid, positive identification of the glial nature of the tumor. In all cases, the GFAP reactivity was consistent with staining properties of PTAH and more rapid than PTAH.Type of Medium: Electronic ResourceURL: -
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ISSN: 1432-0533Keywords: McArdle's syndrome ; Histochemistry ; Electronmicroscopy ; Muscle pathology ; Muscle phosphorylase activitySource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Summary Two cases of McArdle's syndrome are reported. One is a “classical” exaple; the other is unusual because of the in vitro presence of muscle phosphorylase activity. In the latter case. the electronmicroscopic investigation confirmed the diagnosis. The fine structural changes characteristic of this disease are summarized and it is concluded that histochemical studies alone are insufficient to exclude the diagnosis of McArdle's myopathy.Type of Medium: Electronic ResourceURL: -
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ISSN: 1573-1561Keywords: Defensive secretions ; formic acid ; Oxytrigona ; Hymenoptera ; Apidae ; stingless bees ; mandibular glands ; MeliponinaeSource: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyNotes: Abstract The cephalic extracts of two species in the stingless bee genusOxytrigona were analyzed. Extracts made in diethyl ether, and then derivatized with diphenyldiazomethane, revealed large quantities of formic acid, potentially a major defensive secretion of this stingless bee group. We additionally identify several hydrocarbons, aldehydes, ketones, and acetates. Novel diketones identified by others were detected in both species.Type of Medium: Electronic ResourceURL: -
15Galarraga, Juan ; Loreck, David J. ; Graham, Jon F. ; DeLaPaz, Robert L. ; Smith, B. H. ; Hallgren, Douglas ; Cummins, C. J.
Springer
Published 1986Staff ViewISSN: 1573-7365Keywords: energy metabolism ; glia ; gliomas ; positron emission computed tomographySource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Abstract The rates of disappearance of glucose from the medium of 13 human glioma-derived cell lines and one cultured of normal human cortical astrocytes were determined by ftuorometric techniques. High-grade glioma-derived cultures showed a range of glucose consumption between 1 and 5 nmol/min/mg protein. Normal astrocyte cultures and cultures derived from grades I–III gliomas had a glucose consumption rate of 2–3 nmol/min/mg protein. Seven high-grade glioma lines were derived from surgical samples taken from patients who had been scanned by18F-2-deoxy-d-glucose positron computed tomography. The rate of glucose consumption in these high-grade glioma-derived lines was close to the maximum local cerebral metabolic rate for glucose (LCMRglc) measuredin situ in the tumors from which the cultures were derived. In cultured glioma-derived lines, approximately one-half of the glucose consumed was recovered as lactate and pyruvate, suggesting a reliance of glioma cells on aerobic glycolysis. ATP and phosphocreatine (PCr) levels were variable in the gliomaderived lines, and ATP was lower in the glioma-derived lines than in the normal astrocytes. Levels and regulation of glycogen differed significantly among the various glioma-derived cell lines. Glycogen content did not diminish as glucose was consumed, suggesting that glycogen utilization is not tightly regulated by the glucose metabolic rate. These results suggest that human glioma-derived cell cultures (1) adequately reflect the metabolic capacity of gliomasin situ and (2) are significantly altered in several aspects of their glycolytic metabolism.Type of Medium: Electronic ResourceURL: -
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ISSN: 1573-5036Source: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Summary Freshly precipitated ferric and aluminium oxides were added separately to soil and their effects on the availability of both native and added molybdenum were determined using subterranean clover (Trifolium subterraneum L.) as the experimental plant. Both oxides lowered the molybdenum content of the clover and, although it had a smaller specific surface area, ferric oxide had a greater effect than aluminium oxide. In a parallel study with similarly treated soil, the amounts of molybdenum extracted by 0.01M CaCl2, 0.82M NaHCO3 andM NH4OAc were also lowered by both oxides, and ferric oxide again had the greater effect. Extraction with 0.275M NaHC2O4, as proposed elsewhere for assessing available molybdenum, did not show these differences.Type of Medium: Electronic ResourceURL: -
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ISSN: 1573-1561Keywords: Melipona ; Hymenoptera ; Apidae ; mandibular glands ; 2-heptanol ; skatole ; nerol ; undecane ; alarm response ; stingless beesSource: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyNotes: Abstract Workers ofMelipona fasciata andM. interrupta triplaridis respond to their respective mandibular gland extracts with alarm recruitment and defensive behavior. Workers rapidly exit from the nest entrance, land on an intruding object, and bite with the mandibles while vibrating the flight muscles. These behaviors are accompanied by the release of the contents of the mandibular glands. Colonies of both species exhibited greater response to their own mandibular gland extracts than to those of other stingless bee species. Chemical analysis identified 2-heptanol as the major component in hexane extracts of each species. Undecane was a constituent of both species; skatole and nerol were identified only in extracts ofM. i. triplaridis.Type of Medium: Electronic ResourceURL: -
18Staff View
ISSN: 1741-0444Source: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyMedicineDescription / Table of Contents: Sommaire Après un rapide commentaire relatif aux exigences liées à l’obtention de lésions contrôlées dans les tissus cérébraux, on trouvera la description d’un appareil adéquat utilisant le chauffage induit à haute fréquence. Cet appareil offre de grandes possibilités d’intervention, ce qui le rend particulièrement apte à la recherche, et est muni d’un grand nombre de sécurités qui en font un appareil sans danger en dépit de toute fausse manoeuvre. On peut rapidement contrôler son bon fonctionnement à tout moment et sa maintenance est facilitée en cas d’urgence par l’emploi de circuits enfichables les dispersions dans ces caracteristiques électriques des différentes sondes sont compensées par des circuits de calibrage préetablis.Abstract: Zusammenfassung Nach einer kurzen Betrachtung der Voraussetzungen zur Setzung kontrollierter Läsionen im Hirngewebe wird ein geeignetes Instrument beschrieben, das mit der Radiofrequenz-Erhitzungsmethode arbeitet. Das Instrument hat für Forschungszwecke geeignete Überwachungsmöglichkeiten und enthält Schutzschaltungen, die auch bei extrem unsachgemäßem Gebrauch Sicherheit gewährleisten. Die Kontrolle des Geräts kann im Saal schnell und leicht durchgeführt werden. Dringende Wartung wird durch Einschaltkreise ermöglicht. Änderungen der elektrischen Charakteristik verschiedener Sonden werden durch vorgegebene Eichkontrollen ausgeglichen.Notes: Abstract A short discussion of the requirements for the creation of controlled lesions in brain tissue is followed by a description of a suitable instrument using the radio frequency heating method. The instrument has monitoring facilities making it suitable for research, and incorporates protection circuits which make it safe under extreme conditions of misuse. Testing and checking are quickly and easily carried out in the theatre, and urgent maintenance is provided for by the use of plug-in circuits. Variations in the electrical characteristics of different probes are accommodated by preset calibration controls.Type of Medium: Electronic ResourceURL: -
19Staff View
ISSN: 1573-1561Keywords: Lasioglossum zephyrum ; Halictidae ; Hymenoptera ; macrocyclic lactones ; sex pheromones ; kin recognition pheromones ; Dufour's glandSource: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyNotes: Abstract The macrocyclic lactones found in the Dufour's gland of the halictine beeLasioglossum zephyrum are female sex pheromones. Octadecanolide, eicosanolide, docosanolide, and tetracosanolide, as well as monounsaturated homologs of each, are components of the Dufour's gland secretion of this species. Furthermore, a series of odd-carbon-numbered saturated and unsaturated hydrocarbons and isopentenyl docosanoate occur in extracts of the Dufour's gland and of whole females. Two different mixtures of all four synthetic lactones, and additionally a treatment consisting of the natural extract, elicit higher response levels than two of the lactones separately or either of the controls.Type of Medium: Electronic ResourceURL: -
20Frankforter, G. B. ; West, R. ; Haywood, J. K. ; Smith, B. H. ; Auerbach ; Plüddemann
Springer
Published 1909Staff ViewISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: