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Summary

A simple and sensitive method of high-performance liquid chromatography with fluorescence detection (HPLC-FLD) was developed for the determination of icariin in capsules by precolumn chelation with aluminum. In order to obtain a stable fluorescence signal, the reaction conditions of the fluorescent chelation complex between icariin and aluminum were investigated in detail. Chromatography was carried out on an Agilent Zorbax Extend C18 column (150 mm × 4.6 mm, 5.0 μm) using methanol as mobile phase at a flow rate of 1.0 mL min−1. The excitation and emission wavelengths were set at 430 and 480 nm, respectively. At optimum conditions, the calibration curve was linear in the concentration range from 0.010 to 100.0 μg mL−1 with the limit of detection of 3.5 ng mL−1 (S/N = 3). A comprehensive method was validated for precision and accuracy. The method described here has been successfully applied for the determination of the icariin content in a capsule with satisfactory results.

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Acta Microbiologica et Immunologica Hungarica
Authors:
Serra Örsten
,
Selay Demirci-Duarte
,
Tuğçe Ünalan-Altıntop
,
Aslı Çakar
,
Banu Sancak
,
Koray Ergünay
, and
Cumhur Özkuyumcu

“hypervirulent” K. pneumoniae (hvKP) and despite vigorous clinical presentation and relapses, they often lack the antimicrobial resistance patterns observed in cKP [ 6 ]. These strains also frequently demonstrate increased production of capsule polysaccharide

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Orvosi Hetilap
Authors:
Márta Kovács
,
Péter Pák
,
Gábor Pák
,
János Fehér
, and
Kálmán Hüttl

Appleyard, M., Fireman, Z., Glukovsky, A. és mtsai: A randomised trial comparing wireless capsule endoscopy with push enteroscopy for the detection of small bowel lesions. Gastroenterology, 2000

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Orvosi Hetilap
Authors:
Márta Kovács
,
Péter Pák
,
Andrea Uhlyarik
,
Gábor Pák
,
Attila Török
,
Judit Gervain
, and
János Fehér

capsule endoscopy compared to other diagnostic modalities in patients with obscure gastrointestinal bleeding. Am. J. Gastroenterol., 2005, 100 , 2407–2418. Leontiadis G. I. A meta

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Orvosi Hetilap
Authors:
Márta Kovács
,
Péter Pák
,
Gábor Pák
, and
János Fehér

Conference on Capsule Endoscopy in Florida (ICCE). June 9–10, 2006. Zollinger, R. M., Sternfeld, W. C., Schreiber, H.: Primary neoplasms of the small intestine. Am. J. Surg., 1986, 151 , 654

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De Franchis, R., Riccioni, M. E., Cave, D. és mtsai: Video capsule endoscopy for the diagnosis of celiac disease: preliminary results from a multicenter international study. Gastroenterology, 2005, 128 (4 Suppl. 2) , A82

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Iddan, G., Meron, G., Glukhovsky, A. és mtsai: Wireless capsule endoscopy. Nature, 2000, 6785 , 405–417. Glukhovsky A

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Schulmann, K., Schwiegel, W.: Capsule endoscopy for small bowel surveillance in hereditary intestinal polyposis and non-polyposis syndromes. Gastrointest. Endosc. Clin. N. Am., 2004, 14 , 149

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onset [ 3, 4 ]. Xinfeng capsule, a hospital preparation of the First Affiliated Hospital of Anhui University of Chinese Medicine (Anhui medicine system Z20050062) consists of four herbs, which are Astragalus membranaceus (Fisch) Bge . (referred as

Open access
Orvosi Hetilap
Authors:
Márta Kovács
,
Péter Pák
,
Artúr Németh
,
Gábor Pák
,
János Fehér
, and
István Rácz

18 649 653 Iddan, G., Meron, G., Glukhovsky, A. és mtsai: Wireless capsule endoscopy. Nature, 2000, 405 , 725

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