showing 36 of ~574560 from 574555 documents

Poly(adenosine diphosphate-ribose) polymerase in quail oviduct. Changes during estrogen and progesterone induction

1974

Abstract The activities of the following enzymes have been determined in nuclei of quail oviducts in response to exogenous stimulation of the birds with diethylstilbestrol, used as an estrogen analogue and progesterone: DNA dependent DNA polymerase, DNA dependent RNA polymerase I and II and poly(adenosine diphosphate-ribose) [=poly(ADP-Rib)] polymerase. During primary stimulation with the estrogen analogue the activities of the four DNA dependent polymerases increase to about the same degree. Upon withdrawal of the hormones the levels of the enzymes drop to values known from nuclei from unstimulated quail oviducts. The secondary stimulation with the estrogen analogue causes a significant in…

medicine.medical_specialtyanimal structuresDNA polymerasemedicine.drug_classPoly ADP ribose polymeraseRNA polymerase IICoturnixDNA-Directed DNA PolymeraseOviductschemistry.chemical_compoundRNA Polymerase Ibiology.animalInternal medicineGeneticsmedicineRNA polymerase IAnimalsDiethylstilbestrolProgesteronePolymerasebiologyCell DifferentiationAvidinNADMolecular biologyQuailEndocrinologychemistryEstrogenEnzyme Inductionbiology.proteinFemaleRNA Polymerase IIPoly(ADP-ribose) PolymerasesCell DivisionDNANucleic Acids Research

Die Larven der rhachitomen Amphibien (Amphibia: Temnospondyli; Karbon — Trias) The larvae of rhachitomous amphibia (Amphibia: Temnospondyli; Carbonif…

1974

Basierend auf Untersuchungen anBranchiosaurus, Archegosaurus, Sclerocephalus und anderen Eryopiden wird erstmals eine allerdings nur vorlaufige Charakterisierung der Larven rhachitomer Amphibien versucht. Die Verknocherung des Skelettes beginnt ontogenetisch verhaltnismasig fruh (vermutlich bald nach dem Ausschlupfen) im Schadelbereich, und in ihrem Ablauf sind mehrere deutliche Phasen zu erkennen. Zuerst ossifizieren verschiedene Elemente der Kieferregion (Ober- wie Unterkiefer) und des Gaumens (Pterygoid, Palatinum, Proc. cultriformis). Das dermale Schadeldach bildet sich wesentlich spater, beginnend im medianen Bereich (Nasale bis Postparietale); das Neurokranium bleibt knorpelig. Nodi n…

Gynecologymedicine.medical_specialtybiologyTriasmedicinePaleontologyTemnospondyliAnatomybiology.organism_classificationPaläontologische Zeitschrift

Der Zerfall des95Sr

1974

The nuclide95Sr was isolated by chemical separation methods after thermal neutron induced fission of235U. It's decay properties were investigated employing semiconductor spectrometers and coincidence techniques. A half-life of 24.4±0.2 sec was found. Out of 29 gamma rays, 25 transitions representing 97% of the observed gamma-ray intensity were placed in a decay scheme comprising 19 excited states of95Y.

PhysicsNuclear and High Energy PhysicsDecay schemeSpectrometerFissionbusiness.industryAstrophysics::High Energy Astrophysical PhenomenaGamma rayNeutron temperatureNuclear physicsSemiconductorExcited stateNuclear fusionAtomic physicsbusinessZeitschrift für Physik

Catheter-induced bladder gangrene.

1974

GangreneAdultMalemedicine.medical_specialtyRupture Spontaneousbusiness.industryUrologyUrinary Bladder Diseasesmedicine.diseaseShock SepticSurgeryGangreneCatheterShock (circulatory)medicineHumansmedicine.symptombusinessUrinary CatheterizationThe Journal of urology

Inhibitoren der Korrosion 17(1) Die Bedeutung des „Hart-Weich-Konzepts” von Pearson für die Erkennung von Struktur-Wirkungsbeziehungen von Inhibitore…

1974

Ausgehend von einem fruher veroffentlichten Postulat, wonach das Hart-Weich-Konzept von Pearson die Grundlage zur Auffindung von Inhibitoren fur spezifische Anwendungen sein kann, wird mit Hilfe von Modell-inhibitoren mit „harten„funktionellen Gruppen gezeigt, das sich tatsachlich bestimmte Beziehungen zwischen der Struktur und der Wirkung von Inhibitoren ableiten lassen. Als harte Gruppen wurden die Phosphorylgruppe −P(O)O und die Carbonylgruppe CO verwendet. Es zeigt sich dabei, das derartige Verbindungen in der Lage sind, auf Eisen sehr stabile und schutzende Deckschichten zu bilden, wobei die Wirksamkeit der Inhibitoren mit der Lange der aliphatischen Kette deutlich zunimmt. Wie elektro…

Mechanics of MaterialsChemistryMechanical EngineeringMaterials ChemistryMetals and AlloysEnvironmental ChemistryGeneral MedicineMedicinal chemistrySurfaces Coatings and FilmsMaterials and Corrosion/Werkstoffe und Korrosion

Darstellung und charakterisierung von einigen neuen bis(1-phenylvinyl)-verbindungen

1974

Einige neue Bis(1-phenylvinyl)-Verbindungen (1b, c und 2a–d) wurden aus den entsprechenden Diacetylverbindungen und Phenylmagnesiumbromid dargestellt. Ihre IR-, NMR-und Massenspektren werden diskutiert. Some new bis(1-phenylvinyl) compounds (1b, c and 2a–d) were prepared from the corresponding diacetyl compounds and phenyl magnesium bromide. Their IR, NMR and mass spectra are discussed.

chemistry.chemical_compoundColloid and Surface ChemistryPolymers and PlasticsChemistryMagnesium bromidePolymer chemistryMaterials ChemistryMass spectrumPhysical and Theoretical ChemistryMedicinal chemistryDiacetylDie Makromolekulare Chemie

Regulatory effects of polyamines on membrane-bound acetylcholinesterase

1974

The effects of putrescene, spermidine and spermine on membrane-bound acetylcholinesterase from human erythrocyte ‘ghosts’ and the solubilized enzyme of the electric organ of the electric eel were studied by kinetic methods. Measurements were made by using a photometric method which made it possible to record the enzyme reaction in the steady-state phase. Substrate-concentration-dependent activation and inhibition of acetylcholinesterase by polyamines is similar to that by Na+, K+, Ca2+, Mg2+ and certain quaternary and bisquaternary amines. The kinetics suggest an allosteric reaction mechanism. On the basis of the kinetic results a role for the polyamines as modulators of synaptic acetylchol…

Reaction mechanismErythrocytesSpermidineKineticsAllosteric regulationSpermineBiochemistrychemistry.chemical_compoundAllosteric RegulationPolyaminesPutrescineAnimalsHumansMolecular Biologychemistry.chemical_classificationElectric OrganbiologyCellular Interactions and Control ProcessesCell MembraneCell Biologybiology.organism_classificationAcetylcholinesteraseElectric eelEnzyme ActivationSpermidineKineticsEnzymechemistryBiochemistryElectrophorusAcetylcholinesteraseSpermineCholinesterase InhibitorsBiochemical Journal

Über Phosphor‐haltige Heterocyclen I. Kristallstruktur von trans ‐1,6‐Diphenyl‐1λ 5 ,6λ 5 ‐diphosphacyclodecan‐1,6‐dion‐Dihydrat

1974

Die Struktur der Titelsubstanz (2) wurde rontgenographisch bestimmt und bis zu einem konventionellen R von 0.039 verfeinert. 2 ist zentrosymmetrisch. Der 10-Ring besitzt die bei Cyclodecan-Derivaten (3) ubliche Konformation niedrigster Spannungsenergie. 2 und 3 haben vergleichbare Pitzer- und Baeyer-Spannung, die transannularen Wechselwirkungen sind jedoch in 2 verringert. Die geminalen Phenyl- und Oxo-Substituenten stehen beide extra-annular (Phenyl trans-pseudoaxial, Oxo trans-pseudoaquatorial). Mittlerer CP-Abstand 1.804(3) A, PO-Abstand 1.502(3) A. Die Struktur besteht aus uber PO…HOH…OP-Wasserstoffbrucken verbundenen 2-Molekulen. On Heterocyclic Systems Containing Phosphorus, I. Crysta…

Inorganic Chemistrychemistry.chemical_compoundchemistryGeminalHydrogen bondStereochemistryMoleculeCrystal structureRing (chemistry)Medicinal chemistryCyclodecaneChemische Berichte

3,3 resonance and Nucleon pole model forpp→ppπ0 andpp→pnπ+

1974

The Nucleon pole and 3,3 resonance pole contributions are considered for the reactionspp→ppπ0 andpp→pnπ+ at low and medium incident proton energies. The total and various differential cross sections are calculated, also for polarized nucleons, and compared with experimental data.

PhysicsNuclear physicsNuclear and High Energy PhysicsParticle physicsProtonNuclear TheoryNuclear fusionNuclear ExperimentNucleonResonance (particle physics)Differential (mathematics)Zeitschrift für Physik

The behaviour of some thioxanthene and thianthrene derivatives with hydrazoic acid

1974

chemistry.chemical_compoundChemistryOrganic ChemistryThioxantheneHydrazoic acidOrganic chemistryThianthrene

Besteht eine veno-venöse Rechts-links-Differenz in der Blutalkoholkonzentration?

1974

Die Fragestellung der Untersuchungen lautete: Bestehen nach einer Alkoholaufnahme zwischen der Alkoholkonzentration im Venenblut des rechten und des linken Armes Konzentrationsunterschiede? Im ersten Experiment wurde 9 Versuchspersonen 10–160 min nach der Alkoholaufnahme gleichzeitig Venenblut aus dem rechten und linken Arm entnommen. Unterschiede zwischen den Blutalkoholkonzentrationen (BAK) in Probenpaaren, die vom gleichen Entnahmezeitpunkt stammten, wurden entsprechend dem Vorgehen von Audrlický (1971) durch die Bildung des Quotienten (BAK rechts/BAK links) charakterisiert. 17,8% der Quotienten waren groser als 1,07 oder kleiner als 0,93. Weiterhin wurden aus den gleichen Blutproben die…

Gynecologymedicine.medical_specialtymedia_common.quotation_subjectmedicineArtAnatomyPathology and Forensic Medicinemedia_commonZeitschrift für Rechtsmedizin

Delayed-Neutron Spectra Following Decay ofAs85andSb135

1974

PhysicsGeneral Physics and AstronomyAtomic physicsDelayed neutronSpectral linePhysical Review Letters

Optimum plastic design for multiple sets of loads

1974

We study optimum plastic design of structures made up, or conceived as assemblies of finite elements, each having an elemental piece-wise linear rigid-plastic behaviour. Since cost function linearly dependent on design variables are considered, optimization problems in linear programming are encountered. Allowance is made for design dependent mass forces, and for some technological constraints. The design growing process is studied in the case of various sets of alternative applied loads, and the optimality conditions are written in a proper geometrical form which leads to a generalization of the concept of Foulkes mechanism.

Mathematical optimizationOptimization problemLinear programmingMechanics of MaterialsGeneralizationMechanical EngineeringProcess (computing)Allowance (engineering)Linear independenceFunction (mathematics)Condensed Matter PhysicsFinite element methodMathematicsMeccanica

Kristallisations- und schmelzverhalten von copolymeren aus 3,3-bis(chlormethyl)oxetan und ß-propiolacton

1974

Einkristalle von Copolymeren aus 3,3-Bis(chlormethyl)oxetan und s-Propiolacton wurden bezuglich Schmelzverhalten, Schmelzenthalpie, Dichte und Langperiode untersucht. Aus der Messung der Schmelzenthalpie und der Dichte berechnen sich Kristallisationsgrade von 50—60% in guter Ubereinstimmung mit einem Modell, welches den Ausschlus der aus s-Propiolacton (PL) entstandenen Grundbausteine von dem aus Sequenzen der 3,3-Bis(chlormethyl)oxetan (BCMO-)Einheiten aufgebauten Gitter verlangt. Im Vergleich zu reinem Poly-BCMO wird die Dicke der Copolymereinkristalle nur wenig durch Anderung der Kristallisationstemperatur beEinflust. Wegen des blockartigen Aufbaus der Copolymeren bestimmt die mittlere S…

Crystalchemistry.chemical_compoundlawChemistryEnthalpy of fusionPolymer chemistryCopolymerMelting pointCrystallizationEntropy of mixingSequence structureOxetanelaw.inventionDie Makromolekulare Chemie

Alpha-adrenergic drugs in retrograde ejaculation.

1974

6 men with complete or partial loss of ejaculation as a result of retroperitoneal lymphadenectomy (performed because of testicular tumor) were treated with an intravenous injection of 60 mg synephrine. Synephrine stimulates adrenergic alpha-receptors. Only 1 man with sustained retrograde ejaculation improved following treatment showing antegrade ejaculation. This temporary restoration of fertility was thought to be due to an increase in bladder neck tone and prevention of backflow of semen into the bladder as a result of stimulation of adrenergic alpha-receptors.

Retrograde ejaculationInfertilityAdultMalemedicine.medical_specialtyEjaculationPopulationUrologyAdrenergicSemenStimulationCell CountUrineurologic and male genital diseasesMedicineHumansEjaculationeducationeducation.field_of_studybusiness.industrySynephrineObstetrics and Gynecologymedicine.diseaseSpermatozoaSurgeryMasturbationNeck of urinary bladderReproductive MedicineSurgical Procedures OperativeInjections IntravenousLymph Node ExcisionGenital Diseases MalebusinessFertility and sterility

Die Hollow Fiber Artificial Kidney 4. Ein neuer Capillardialysator

1974

Blutruckstand, Clearance, Effektivitat und Handhabung der HFAK Typ 4 werden im Routinebetrieb eines Dialysezentrums einmal a) bei nicht entgastem Dialysat und Heparinisierung am Anfang der Dialyse sowie b) bei entgastem Dialysat und einer systemischen Heparinisierung ca. 5 min vor Dialysebeginn gepruft.

Gynecologymedicine.medical_specialtybusiness.industryDrug DiscoveryMolecular MedicineMedicineGeneral MedicinebusinessGenetics (clinical)Klinische Wochenschrift

Telemetrische Untersuchungen zur Wertigkeit eines Basalblutdruckes bei Hochdruckkranken

1974

Mittels blutdruckelemetrischer Langzeitmessungen konnten wir an 26 Hochdruckkranken zeigen, das der Basisblutdruck nach Smirk durch eine Modifikation des Entspannungsblutdrucks nach Meesmann — systolisch wie diastolisch — identisch bestimmt werden kann. Der Basisblutdruck korreliert schlecht zum niedrigsten Wert im Schlaf ebenso wie zu Blutdrucken unter alltaglichen Belastungen. Die noch engste Korrelation lies sich zu einem eher willkurlich herausgegriffenen Gelegenheitsblutdruck aufzeigen; der Gelegenheitsblutdruck scheint — insbesondere als Mittelwert mehrere Messungen — am ehesten eine representative Aussage uber Schwere der Hochdruckkrankheit des Einzelnen zu gestatten.

Gynecologymedicine.medical_specialtyPhilosophyDrug DiscoverymedicineMolecular MedicineGeneral MedicineGenetics (clinical)Klinische Wochenschrift

The effect of simulation exercises on the control of aggressive behaviour in children

1974

.— The subjects consisted of two. matched, extremely aggressive (experimental = ExG and control = CoG) groups of twelve 8–year-old boys. and of one criterion group (CrG) of extrovert, well-controlled boys. Video-tape recording of behaviour was used both in pretest (T1) and post-test (T2). Between T1 and T2 the ExG was submitted to simulation exercises of 8 lessons given in a period of four weeks. The exercises consisted in social problem solutions on the purely cognitive (imaginary and symbolic) level and in role-playing (behavioral level). The hypothesis was that the combination of cognitive training and observational learning with the aim of making children realise alternatives to aggress…

Coping (psychology)Extraversion and introversionAggressionCognitionGeneral MedicineConstructiveCognitive trainingDevelopmental psychologyCogArts and Humanities (miscellaneous)Developmental and Educational PsychologymedicineObservational learningmedicine.symptomPsychologyGeneral PsychologyScandinavian Journal of Psychology

false

1974

An attempt is made to correlate crystallographic changes arising during the radiation induced polymerisation of trioxane with the morphological changes observed during this process. Particular emphasis is placed on the differences which are noted with changing polymerisation time and temperature, so that both nucleation and growth could be discussed. Die Anderung der Kristallstruktur des Trioxan, die bei der strahleninduzierten Polymerisation beobachtet wird, wurde im Zusammenhang mit den bei diesem Prozes auftretenden morphologischen Veranderungen untersucht. Die Unterschiede, die sich durch geeignete Wahl der Polymerisationszeit und der Temperatur ergeben, bieten die Moglichkeit, sowohl d…

chemistry.chemical_compoundTrioxanechemistryPolymerizationPolymer chemistrySolid-stateKinetic energyDie Makromolekulare Chemie

Chemische charakterisierung des kettenaufbaus und kristallisationsverhaltens von copolymeren aus 3,3-bis(chlormethyl)oxetan und β-propiolacton

1974

Aus 3,3-Bis(chlormethyl)oxetan (1) und β-Propiolacton (2) wurden durch kationische Polymerisation Copolymere hergestellt, in denen Propiolactoneinheiten bis zu einem Molenbruch von 0,16 eingebaut sind. Das Copolymerisationsverhalten wurde untersucht, und die Copolymerisationsparameter wurden bestimmt. Die Copolymeren wurden kristallisiert und die Einkristalle hinsichtlich ihrer Zusammensetzung und Morphologie charakterisiert. Durch selektive Umesterung in den amorphen Bereichen der suspendierten Einkristalle wurde die Verteilung der aus β-Propiolacton gebildeten Einheiten (PL) uber den Kristall untersucht, und die Ergebnisse mit Abbauversuchen an den gelosten Copolymeren wurden verglichen. …

chemistry.chemical_compoundPolymerizationChemistryHomogeneousPolymer chemistryCationic polymerizationCopolymerLamellar structureOxetaneAmorphous phaseDie Makromolekulare Chemie

�ber die Neurotoxizit�t von Carbenicillin

1974

Die neurotoxische Wirkung von Carbenicillin wurde am wachen Kaninchen untersucht. Die Neurotoxizitat wurde bestimmt anhand von EEG-Veranderungen wie Spikes, Polyspikes and Spike-wave-Paroxysmen. Den Tieren wurden 2,4 g/kg Carbenicillin uber 50 min intravenos infundiert. Bis 2 Std nach Infusionsbeginn wurden zu bestimmten Zeitpunkten die Carbenicillinblutspiegel gemessen. Spikes als erstes neurotoxisches Symptom waren regelmasig bei Blutspiegeln von 3252±186 µg/ml zu beobachten. Nach Carbenicillin waren die toxischen Veranderungen wesentlich ausgepragter als nach Ampicillin, jedoch deutlich geringer als nach Penicillin G. Diese Ergebnisse stehen im Einklang mit den in klinischen Fallberichte…

Gynecologymedicine.medical_specialtybusiness.industryDrug DiscoverymedicineMolecular MedicineGeneral MedicineCarbenicillinbusinessGenetics (clinical)medicine.drugKlinische Wochenschrift

Enzyme activities and glycogen concentration in skeletal muscle in alcoholism. The effect of abstinence and physical conditioning.

1974

. Muscle metabolism of chronic alcoholics has been studied using a muscle biopsy technique immediately after a drinking period, after 6–7 days' abstinence and after one month's physical conditioning. The activities of CPK, HK, LDH, MDH and SDH were significantly decreased in musculus vastus lateralis for 1–2 days after an alcoholic debauch. The enzyme activities of the alcoholics, who either had been abstinent for 6–7 days or in addition conditioned for one month, did not differ from those of the controls. The concentration of muscle glycogen was at the same level in both groups, but in bicycle ergometer work of an equal relative intensity the alcoholics used more glycogen than the control …

AdultMalemedicine.medical_specialtyTime Factorsmedia_common.quotation_subjectPhysical fitnessPhysical Exertionchemistry.chemical_compoundMalate DehydrogenaseInternal medicineHexokinaseInternal MedicinemedicineHumansCreatine Kinasemedia_commonchemistry.chemical_classificationMuscle biopsyPhysical Education and TrainingPhysical conditioningGlycogenmedicine.diagnostic_testL-Lactate Dehydrogenasebusiness.industryMusclesBiopsy NeedlePhosphotransferasesSkeletal muscleAbstinenceMiddle AgedSuccinate DehydrogenaseAlcohol OxidoreductasesAlcoholismEndocrinologyEnzymemedicine.anatomical_structurechemistryConditioningbusinessEnergy MetabolismGlycogenActa medica Scandinavica

A new approach to interacting fields

1974

A model for a description of interaction, which involves particle creation, can be given as follows: (1) A smooth finite-dimensional manifoldM constitutes the configuration space of some interacting system. (2) The concept of an interacting field is formulated in terms of two-component objects which consist of a physical and a topological field component which are ‘derived’ fromM. (3) Interaction is described in terms of the topological linking number of the topological field components and in terms of the intrinsic field equations.

Physicssymbols.namesakeClassical mechanicsPhysics and Astronomy (miscellaneous)Field (physics)Component (thermodynamics)General MathematicssymbolsLinking numberConfiguration spaceField equationTopological quantum numberInternational Journal of Theoretical Physics

Some aspects of the recovery of chlorinated residues (DDT-type compounds and PCB) from fish tissue by using different extraction methods

1974

Analysis of VarianceChromatography GasChemistryDichlorodiphenyl DichloroethyleneHealth Toxicology and MutagenesisFishesPesticide ResiduesGeneral MedicineToxicologyLipidsPolychlorinated BiphenylsPollutionDDTEnvironmental chemistryMethodsSolventsAnimalsFish <Actinopterygii>EcotoxicologyExtraction methodsBulletin of Environmental Contamination and Toxicology

A time-of-flight facility for the measurement of electron-induced neutron spectra

1974

Abstract A time-of-flight facility is constructed to investigate photoneutrons in the energy range 5 MeV ≤ En ≤ 200 MeV. Photoneutrons are detected simultaneously at four angles (40.2°, 90°, 113.5°, 142.2°). The overall time resolution varies from 0.282 ns/m to 0.358 ns/m, depending on the different flight paths (18.56 m to 11.40 m). As a first check the facility is used to measure the ratio of the number of virtual photons to real photons via the photodisintegration of 2H. The measured values agree with the calculated photon spectra.

Nuclear physicsPhysicsRange (particle radiation)Time of flightPhotonPhotodisintegrationVirtual particleNeutron spectraGeneral MedicineElectronPhoton spectraNuclear Instruments and Methods

Kinetic experiments on the synergistic effect of NADH on microsomal drug oxidation.

1974

Abstract1. The synergistic effect of NADH on the NADPH-dependent mixed function oxidation of p-nitroanisole and hexobarbital can be measured both photometrically and by following the substrate-induced oxygen consumption. The increase in reaction rate is about 50% and lasts as long as NADH is present in the microsomal suspension.2. The oxidation of added NADH is increased by hexobarbital, ethylmorphine and SKF 525-A. Lineweaver-Burk transformation of the NADH oxidation rates yields straight lines for xenobiotic substrates suggesting Michaelis constants similar to those obtained from metabolic experiments. NADH oxidation in the absence of NADPH is about half as rapid as in its presence.3. Som…

MalePyridinesHealth Toxicology and MutagenesisCyanidechemistry.chemical_elementHexobarbitalAnisolesToxicologyPhotochemistryBiochemistryOxygenMixed Function Oxygenaseschemistry.chemical_compoundOxygen ConsumptionPhenolsmedicineOrganic chemistryAnimalsPharmacologyCarbon MonoxideAniline CompoundsChemistryProadifenDrug SynergismGeneral MedicineMetyraponeEthylmorphineNADNitro CompoundsRatsHexobarbitalPharmaceutical PreparationsSpectrophotometryReagentPhenobarbitalMicrosomeMicrosomes LiverXenobioticChloromercuribenzoatesOxidation-Reductionmedicine.drugCarbon monoxideXenobiotica; the fate of foreign compounds in biological systems

On the spectral intermediate at 440 nm formed during mixed function substrate oxidation.

1974

Abstract The spectral shoulder formed at 440 nm in microsomes oxidising hexobarbital and other drugs has been investigated and some of its properties characterised. Hexobarbital, pentobarbital, ethylmorphine and barbital produce this shoulder, while acetanilide, aniline, desmethylimipramine, imipramine, metyrapone and SKF 525-A do not. The formation of the 440 nm shoulder depends on the presence of NADPH and oxygen and is reduced in size when NADH is also present. At saturating substrate concentrations the size of the 440 nm shoulder is correlated to the cytochrome P-450 content. The hexobarbital induced shoulder can be inhibited by drug metabolism inhibitors such as metyrapone, imipramine …

MaleImipramineCytochromeStereochemistrychemistry.chemical_elementBarbitalIn Vitro TechniquesPhotochemistryBiochemistryOxygenMixed Function Oxygenaseschemistry.chemical_compoundAnilineOxygen ConsumptionCytochrome P-450 Enzyme SystemmedicineAnimalsAcetanilidePentobarbitalPharmacologyAniline CompoundsbiologyProadifenDesipramineSubstrate (chemistry)MetyraponeEthylmorphineNADRatsKineticsHexobarbitalchemistryMorphinansBarbituratesbiology.proteinMicrosomes LiverAcetanilidesSpectrophotometry UltravioletOxidoreductasesOxidation-ReductionNADPmedicine.drugProtein BindingBiochemical pharmacology

Einflu� eines diphenolischen Laxans (Bisacodyl) auf den Wasser- und Elektrolyttransport im menschlichen Colon

1974

Bei 5 Versuchspersonen wurde die Wirkung von Bisacodyl auf die Wasser- und Elektrolytbewegungen im menschlichen Colon untersucht. Das Colon wurde durch eine Sonde perfundiert, die in das Coecum plaziert wurde. Die Perfusionslosung enthielt NaCl (140 maq/l) als Chlorid und Bicarbonat und K (2,8 maq/l) als Chlorid sowie14C-Polyathylenglykol als Marker. Sie wurde mit einer Rate von 10 ml/min perfundiert und uber ein Darmrohr im Rectum wieder aufgefangen.

Chromatographymedicine.medical_treatmentPotassiumSodiumLaxativechemistry.chemical_elementCatharticGeneral MedicineElectrolytechemistryDrug DiscoverymedicineMolecular MedicineWater-Electrolyte BalanceBisacodylGenetics (clinical)Human colonmedicine.drugKlinische Wochenschrift

Zur Vitalitätsprüfung isolierter Rattenleberzellen

1974

Rattenleberzellen wurden mittels extrakorporaler Leberperfusion unter Verwendung eines Hyaluronidase-Kollagenase-haltigen bzw. enzymfreien Perfusionsmediums isoliert. Die isolierten Leberzellen wurden auf ihr Verhalten gegenuber Trypanblau, FDA, in der Phasenkontrastbetrachtung und im Luciferin-Luciferase-Test untersucht. Daruber hinaus wurde der ATP-Gehalt der Zellen sowie die spontane Abgabe von51Cr aus markierten Zellen bestimmt.

ChemistryRat liverGeneral MedicineMolecular biologyResearch in Experimental Medicine

Studies on the subcellular pathophysiology of acute lethal cell injury.

1974

Summary In this paper we have summarized the effects of acute lethal injury on the cell. Such injuries are defined as injuries that result in cell death within a relatively short period of time usually minutes or hours. Following death; the cell undergoes necrosis. Ultrastructural and biochemical methods are needed to study pathophysiology. The cell passes through a series of stages numbered 1 through 7. Stages 1 through 4 are reversible while 5 through 7 are irreversible. Injuries resulting in acute cell death and necrosis include direct damage to the cell membrane, for example by antibody and complement or non-penetrating mercurials or interference with mitochondrial energy supply as in i…

Programmed cell deathPathologymedicine.medical_specialtyNecrosisTime FactorsCell SurvivalCellsCellIschemiaMitochondrionBiologyPermeabilityPathology and Forensic MedicineCell Physiological PhenomenaCell membraneKidney Tubules Proximal03 medical and health sciencesNecrosis0302 clinical medicineIschemiamedicineAnimalsHypoxia030304 developmental biology0303 health sciencesCell MembraneGeneral MedicineHypoxia (medical)medicine.diseasePathophysiology3. Good healthMitochondriaRatsMicroscopy Electronmedicine.anatomical_structuremedicine.symptomMitochondrial Swelling030217 neurology & neurosurgeryBeitrage zur Pathologie

Studies on the subcellular pathophysiology of sublethal chronic cell injury.

1974

Summary This paper summarizes some of the important subcellular events occurring after chronic sublethal cell injury. Chronic cell injury is defined as the result of injurious stimuli which permit cell survival though in altered steady states for protracted periods of time. The importance of ultrastructural and biochemical studies of these phenomena is emphasized. Among the phenomena discussed are alterations in lysosomes, cellular hypertrophy, fatty metamorphosis, alterations in microfilaments and microtubules, alterations in mechanisms of transcription and replication, disturbances in the cell surface and transport across the cell membrane, and alterations in intracellular transport.

AdultMaleTime FactorsTranscription GeneticSurface PropertiesCellsCellGuinea PigsBronchiBiologyMicrofilamentMicrotubulesPathology and Forensic MedicineMuscle hypertrophyCell Physiological PhenomenaCell membraneMiceMicrotubuleTranscription (biology)medicineAnimalsHumansCerebral CortexMacrophagesMusclesCell MembraneBiological TransportGeneral MedicineHypertrophyMiddle AgedPathophysiologyCell biologyMicroscopy Electronmedicine.anatomical_structureLiverUltrastructureRabbitsLysosomesCell DivisionBeitrage zur Pathologie

Simultaneous clean up of fish fat containing low levels of residues and separation of PCB from chlorinated pesticides by thin-layer chromatography

1974

DichlorodiphenyldichloroethaneInsecticidesChromatography GasDichlorodiphenyl DichloroethyleneHealth Toxicology and MutagenesisToxicologyDDTAnimalsWater pollutionDieldrinChromatographyAldrinChemistryFishesPesticide ResiduesOxidesGeneral MedicineSulfuric AcidsPesticidePolychlorinated BiphenylsPollutionThin-layer chromatographyClean-upAdipose TissueWastewaterEnvironmental chemistrySolventsFish <Actinopterygii>Indicators and ReagentsChromatography Thin LayerHexachlorocyclohexaneAluminumBulletin of Environmental Contamination and Toxicology

Estimation of pharmacokinetic parameters of lithium from saliva and urine

1974

The salivary and urinary excretion of lithium was studied in three healthy male sub;ects after oral administration of two or three different doses. In all individuals the concentration of lithium in salivary fluid was found to be 2.2 to 3.3 times as high as the concentration in plasma. In each sub;ect the saliva:plasma concentration ratio remained constant over more than a 100 fold concentration range for at least 3 months. This ratio was not markedly affected by about tenfold changes in saliva flow rate. Thus, pharmacokinetic parameters obtained from salivary excretion data are in agreement with those obtained from plasma concentration and urinary excretion rate data, and renal clearance o…

AdultMalemedicine.medical_specialtySalivaTime FactorsSalivary ExcretionMetabolic Clearance RateAdministration OralUrineLithiumKidneyUrinary excretionPharmacokineticsOral administrationInternal medicinemedicineHumansPharmacology (medical)SalivaPharmacologyChemistrySpectrophotometry AtomicDiurnal rhythmsCircadian RhythmKineticsEndocrinologyCreatinineRegression AnalysisSalivationHalf-LifeClearanceClinical Pharmacology &amp; Therapeutics

RESUME:Studies on the Chemical Control of Aonidiella aurantii (Mask.)

1974

Aonidiella aurantii (Mask.) which was accidentally introduced in Sicily in 1968 has since become a dangerous pest requesting special treatments in citrus groves. Experiments have been carried out on Citrus lemon to evaluate the efficacy of several organophosphorous compounds partly in mixture with white oil and this latter applied sole (cf. table 1). The results obtained against young females are set out in table 2; they show excellent results with almost all compounds whereas the same pesticides had a rather poor effect on mature females (cf. table 3). It is concluded that the replacement of white oils by organophosphorous compounds is not justified providing that the control is directed a…

ToxicologybiologyOrganophosphorous compoundsRather poorPlant SciencePEST analysisHorticulturePesticideYoung femaleChemical controlbiology.organism_classificationAgronomy and Crop ScienceAonidiella aurantiiEPPO Bulletin

Psychomotor reactions of aggressive and non-aggressive extrovert children.

1974

.— The subjects comprised two, matched, extremely aggressive (experimental ExG and control) groups of twelve 8–year-old boys, and one criterion group of extrovert, well-controlled boys. The ExG was submitted to a treatment of eight lesson? with the aim of making an individual realize non-aggressive, constructive ways of coping with situations. Video-tape recording was used. The results showed that (1) aggressively extrovert children were more impulsive and utilized more space than the constructively extrovert, (2) psychomotor characteristics were more stable over situations than aggressive and constructive coping strategies, and (3) no changes in the psychomotor characteristics of the ExG, …

MaleCoping (psychology)Poison controlMotor ActivityConstructiveDevelopmental psychologyExtraversion PsychologicalArts and Humanities (miscellaneous)Injury preventionDevelopmental and Educational PsychologymedicineHumansChildRole PlayingGeneral PsychologyPsychomotor learningExtraversion and introversionAggressionVerbal BehaviorGeneral MedicineDispositionAggressionImpulsive Behaviormedicine.symptomPsychologySocial psychologyPersonalityScandinavian journal of psychology

Experimentelle und theoretische Untersuchungen der intralienalen Mikrozirkulation beim Kaninchen

1974

1. Bei 57 spontanatmenden Kaninchen wird in Ketaminnarkose mit Hilfe der85Kr(β)-Auswaschtechnik nach Stosinjektion des gelosten Indikators in die Aorta die regionale Milzdurchblutung gemessen. 2. Bei der normalen, unbeeinflusten Milzin situ besteht im Bereich von 65–125 mm Hg eine lineare Abhangigkeit der regionalen Milzdurchblutung vom arteriellen Mitteldruck (2p < 0,001). Bei einem mittleren Druck von 97 mm Hg betragt die mittlere Milzdurchblutung 1,23 ml/g/min. 3. Nach totaler Obstruktion der offenen Strombahn durch Applikation rigider Spharocyten ist die Durchblutung im gleichen Blutdruckbereich unabhangig vom arteriellen Mitteldruck. Nach Ausschaltung der offenen Strombahn betragt die …

Gynecologymedicine.medical_specialtyChemistrymedicineGeneral MedicineMicrocirculationResearch in Experimental Medicine