Search results for "PAPA"
showing 10 items of 208 documents
A negative inotropic effect of acetylcholine in the presence of several phosphodiesterase inhibitors.
1981
The phosphodiesterase inhibitors papaverine, theophylline and 3-isobutyl-1-methylxanthine (IBMX) reveal a negative inotropic effect of acetylcholine in cat ventricular heart muscle. This effect in unrelated to beta-adrenoceptor stimulation and possibly mediated by the accumulation of cyclic GMP.
Electrical and mechanical activity of mammalian heart muscle fibres treated with papaverine
1977
The action of papaverine on electrical and mechanical activity was investigated in ventricular and atrial heart muscle fibres from guinea-pigs and cats. 1. Papaverine (10−5 M–5×10−5M) had positive, negative or no inotropic effects in ventricular preparations; positive inotropic effects were not observed after pretreatment of the animals with reserpine. In atrial preparations, papaverine (2×10−5M) had a positive inotropic effect that was independent of endogenously stored catecholamines. 2. The effects of isoprenaline and dibutyryl cyclic AMP were potentiated by papaverine (10−5 M–2×10−5M). 3. The action potential duration was always prolonged by papaverine in ventricular as well as in atria…
Combining Hexanoic Acid Plant Priming with Bacillus thuringiensis Insecticidal Activity against Colorado Potato Beetle
2013
Interaction between insect herbivores and host plants can be modulated by endogenous and exogenous compounds present in the source of food and might be successfully exploited in Colorado potato beetle (CPB) pest management. Feeding tests with CPB larvae reared on three solanaceous plants (potato, eggplant and tomato) resulted in variable larval growth rates and differential susceptibility to Bacillus thuringiensis Cry3Aa toxin as a function of the host plant. An inverse correlation with toxicity was observed in Cry3Aa proteolytic patterns generated by CPB midgut brush-border membrane vesicles (BBMV) from Solanaceae-fed larvae, being the toxin most extensively proteolyzed on potato, followed…
Influence of calcium on the effects of okadaic acid and its interaction with caffeine and theophylline in rat myometrium.
1994
The effects of okadaic acid (OA), a monocarboxylic acid produced by marine dinoflagellates belonging to the genera Dinophysis and Prorocentrum, and their interactions with theophylline and caffeine were studied on the rat-isolated uterus in a calcium-containing medium and a calcium-free medium in the presence of 10−3 M EGTA. Okadaic acid (5 × 10−6 to 5 × 10−5 M) induced a concentration-dependent contraction of the rat-isolated uterus corresponding, with 5 × 10−5M, to 142.3±6.1% (n = 7) of the contraction induced by oxytocin 10−6 M. The time to peak tension was inversely proportional to the maximum effect produced. The contraction was not sustained and was followed by a concentration-depende…
Considerazioni conclusive
2021
Il saggio presenta alcune considerazioni conclusive sulla sezione monografica dedicata a Istituzioni, relazioni e culture politiche nelle città tra stato della Chiesa e regno di Napoli (1350-1500 ca.). I tre autori, adottando un approccio comparativo, riflettono sulla definizione degli spazi nelle due aree confinanti, sulla condizione delle città pontificie e sulle culture politiche e le specificità dei centri urbani considerati nella raccolta.
Botanisches Handbuch. 5. Theil: Vier und zwanzigste Klasse des Linnéischen Pflanzensystems oder Kryptogamische Gewächse, 1. Band
1815
Erster Band der Ausgabe mit zweihundert und neunzehn ausgemalten Kupfertafeln enthält ausser den sämmtlichen Farnkräutern Deutschlands noch eine grosse Anzahl anderer aus allen Welttheilen, welche noch nicht, oder zum Theil unvollkommen, auch nur in seltnen Werken abgebildet sind. Inhalt: Vorbericht ; Verzeichniss der in der Vorrede erwähnten Schriftsteller ; Conspectus generum Filicum : Uebersicht der Gattungen der Farnkräuter ; Species Filicum ;Tab. 1-25.
Penile Abflußvenenokklusion: Vergleich von erektiler Funktion und Kavernosometrie vor und nach perkutanen Eingriffen
1993
After percutaneous transpenile or retrograde venous occlusion for the treatment of a cavernous leak, the clinical results were correlated with cavernosometric flow measurements in 27 patients. In 15 patients, venous occlusion led to a reduction of the maintenance flow: in patients who showed improvement there was an average reduction of 30 ml/min, in those without improvement or deterioration it averaged 0.3 or 13 ml/min respectively. In 7 patients there was increased flow (up to +21 ml/min). One of these patients showed improved erectile function; the remaining 6 showed no change as was also the case in 5 other patients who had no change in cavernosometric measurements. Our findings sugges…
Sogno sull'onda
2017
Tre racconti di Papadiamandis tradotti in italiano con testo greco (originale) a fronte
A.Papadiamandis, Due racconti di Skiathos
2012
Versione italiana di due racconti di Papadiamandis
Typification of the name Papaver hybridum L. (Papaveraceae)
2011
The typification of the Linnaean name Papaver hybridum is discussed. A specimen in the Burser Herbarium at Uppsala is designated as lectotype.