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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 28 (2000), S. 201-209 
    ISSN: 1434-0879
    Keywords: Key wordsSerenoa repens ; Pygeum africanum ; Prostate ; BPH ; Bladder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In Europe, phytotherapeutic preparations have been prescribed for the treatment of symptomatic benign prostatic hyperplasia (BPH) for over 20 years [l–4]. In these countries, phytotherapeutic preparations represent approximately l/3 of total sales of all therapeutic agents sold for the treatment of BPH. In France, and other countries, phytotherapeutic preparations are the most widely used drugs for the treatment of BPH. In Asia, Africa, and India, phytotherapy is considered a first-line treatment for BPH and has been utilized effectively for centuries. In the United States, the multi-million dollar sales of phytotherapeutic preparations for “the health of the prostate and bladder” attests to the widespread utilization of these agents [3, 4]. Two of the most popular phytotherapeutic agents that have undergone both clinical studies to determine their efficacy, and have been the subject of basic science studies to identify the mechanism(s) of action are Pygeum africanum (Tadenan), an extract from the bark of the African plum tree, and Serenoa repens (Permixon), a lipido-sterol extract of dwarf palm. Tadenan and Permixon are registered therapeutic agents of Debat Pharmaceuticals, and Pierre Fabre Medicament, respectively. Manufacture of both preparations are tightly controlled and subjected to strict quality control for stability of component composition. In regard to phytotherapeutic agents, each individual preparation (even from the same plant source) must be considered individually because of differences in the extraction techniques, preparation of products, composition, and biological activities. Thus, the clinical and biological activities of one preparation cannot be extrapolated to other preparations of the same plant source. Thus, studies described in this review which utilize the preparations that are manufactured by DEBAT (Pygeum africanum) or Pierre Fabre Medicament (Serenoa repens) are referred to by their trade names, Tadenan and Permixon, to differentiate them from other nonstandardized preparations of the same plants.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 269 (1974), S. 284-287 
    ISSN: 1618-2650
    Keywords: Best. von Silber in Gesteinen, Mineralien ; Spektralphotometrie, Atomabsorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary Methods have been proposed for the determination of trace quantities of silver in sulphide ores and silicate rocks. For sulphide ores the samples have been decomposed by nitric acid-perchloric acid attack and the chloride interference eliminated by use of ammonium citrate-ammonium hydroxide. Silicate rock samples have been decomposed by hydrofluoric acid-perchloric acid attack and silver is determined in the organic phase after extraction with dithizone in MIBK. The methods are very simple and accurate and silver in amounts as low as 0.05 μg in a sample can be determined with confidence.
    Notes: Zusammenfassung Verfahren werden beschrieben zur Bestimmung von Silberspuren in Sulfiderzen und Silicatgesteinen. Sulfiderze werden mit Hilfe von Salpetersäure/Perchlorsäure aufgeschlossen und die Störung durch Chlorionen wird mit Ammoniumcitrat/Ammoniumhydroxid eliminiert. Zum Aufschluß von Silicatgesteinen dient Flußsäure/Perchlorsäure, Silber wird in der organischen Phase nach Extraktion mit Dithizon in MIBK bestimmt. Die Verfahren sind einfach und genau und Mengen von 0,05 μg Ag können noch befriedigend erfaßt werden.
    Type of Medium: Electronic Resource
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