Increased excretion of 5-hydroxy-indole-acetic acid after the administration of 3-indole-acetic acid (heteroauxine)

Zusammenfassung Nach peroraler Verabreichung von IAA wird eine vermehrte Ausscheidung von 5-HIAA festgestellt. Eine Hydroxylierung der aufgenommenen IAA wird vermutet. Damit wird ein neuer Weg der Entstehung der 5-HIAA beim Menschen aufgezeigt.     

Indirect effect of ultrasound on water permeability of the connective tissue

Zusammenfassung Die Durchlässigkeit des Rattenmesenteriums für demineralisiertes Wasser wird durch Ultraschallbehandlung des Wassers signifikant erhöht.     

Psychotogenic and hallucinogenic properties of large doses of benactyzine

Zusammenfassung Benactyzin in Dosen 50–200 mg löste bei 7 Versuchspersonen experimentelle Psychose mit gleichzeitiger Herabsetzung von 5-Hydroxyindolylessigsäure im Harn aus. Die psychotogene Wirkung wird mit dem Eingriff in den Serotonin- und Acetylcholinmetabolismus erklärt.     

The inhibitory effect of 6-azauracil riboside on the multiplication of vaccinia virus

Zusammenfassung Die Hemmwirkung von 6-Azauracilribosid auf die Vermehrung des Vaccina-Virus in Gewebekulturen wurde festgestellt. Die Substanz blieb gegen andere Viren (Influenza A, NDV, EEE) wirkungslos.     

Chromatography of some human glycoproteins on DEAE-Sephadex A-25

Zusammenfassung Zur Fraktionierung der Human-plasmaproteine wurde DEAE-Sephadex A-25 verwendet und die Fraktionen I–VI durch Immuno- und Stärkegelelektrophorese charakterisiert. Nach Eluierung der proteinreichen 1. Fraktion wurden zahlreiche Glykoproteine gefunden und die Abtrennung von ₁-Präalbumin erreicht.     

Hidden magnetic excitation in the pseudogap phase of a high-T(c) superconductor

The elucidation of the pseudogap phenomenon of the high-transition-temperature (high-T(c)) copper oxides-a set of anomalous physical properties below the characteristic temperature T* and above T(c)-has been a major challenge in condensed matter physics for the past two decades. Following initial indications of broken time-reversal symmetry in photoemission experiments, recent polarized neutron diffraction work demonstrated the universal existence of an unusual magnetic order below T* (refs 3, 4). These findings have the profound implication that the pseudogap regime constitutes a genuine new phase of matter rather than a mere crossover phenomenon. They are furthermore consistent with a particular type of order involving circulating orbital currents, and with the notion that the phase diagram is controlled by a quantum critical point. Here we report inelastic neutron scattering results for HgBa(2)CuO(4+δ) that reveal a fundamental collective magnetic mode associated with the unusual order, and which further support this picture. The mode's intensity rises below the same temperature T* and its dispersion is weak, as expected for an Ising-like order parameter. Its energy of 52-56?meV renders it a new candidate for the hitherto unexplained ubiquitous electron-boson coupling features observed in spectroscopic studies.     

A novel putative auxin carrier family regulates intracellular auxin homeostasis in plants

The phytohormone auxin acts as a prominent signal, providing, by its local accumulation or depletion in selected cells, a spatial and temporal reference for changes in the developmental program. The distribution of auxin depends on both auxin metabolism (biosynthesis, conjugation and degradation) and cellular auxin transport. We identified in silico a novel putative auxin transport facilitator family, called PIN-LIKES (PILS). Here we illustrate that PILS proteins are required for auxin-dependent regulation of plant growth by determining the cellular sensitivity to auxin. PILS proteins regulate intracellular auxin accumulation at the endoplasmic reticulum and thus auxin availability for nuclear auxin signalling. PILS activity affects the level of endogenous auxin indole-3-acetic acid (IAA), presumably via intracellular accumulation and metabolism. Our findings reveal that the transport machinery to compartmentalize auxin within the cell is of an unexpected molecular complexity and demonstrate this compartmentalization to be functionally important for a number of developmental processes.