BEI BERüHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckm??ig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.
P305+P351+P338
BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren. S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Lansoprazole is the second proton pump inhibitor approved as an antiulcer agent for the
short term treatment of duodenal ulcer and gastroesophageal reflux disease. Like
omeprazole, lansoprazole is reported to be more efficacious than the H2-antagonists in treating peptic ulcer disease.Other potential uses could be in the treatment of Zollinger-Ellison syndrome.
Chemische Eigenschaften
White Crystalline Powder
Verwenden
Used as a gastric proton pump inhibitor. An antiulcerative
Allgemeine Beschreibung
Lansoprazole, 2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl]methyl]sulfinyl]-1H-benzimidazole(Prevacid), is a white to brownish white, odorless crystallinepowder that is practically insoluble in water.Lansoprazole is a weak base (pyridine N, pKa 3.83.) and aweak acid (benzimidazole N-H, pK 0.62). Like other PPIs,lansoprazole is essentially a prodrug that, in the acidic biophaseof the parietal cell, forms an active metabolite thatirreversibly interacts with the target ATPase of the pump.Lansoprazole must be formulated as encapsulated entericcoatedgranules for oral administration to protect the drugfrom the acidic environment of the stomach. In the fasting state, about 80% of a dose of lansoprazole(vs. 50% of omeprazole) reaches the systemic circulation,where it is 97% bound to plasma proteins. Thedrug is metabolized in the liver (sulfone and hydroxymetabolites) and excreted in bile and urine, with a plasmahalf-life of about 1.5 hours.
Biologische Aktivit?t
H + ,K + -ATPase inhibitor (IC 50 = 6.3 μ M) that displays antisecretory and antiulcer activity. Inhibits gastric acid secretion (IC 50 = 0.09 μ M for histamine-induced acid formation) and reduces gastric lesion formation induced by a variety of ulcerative stimuli. Antibacterial against Helicobacter pylori in vitro . Also blocks swelling-dependent chloride channel (ICIswell) in NIH3T3 fibroblasts. More potent than omeprazole (5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole ).
Lansoprazole Upstream-Materialien And Downstream Produkte