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Anthranoid-containing medicines and food supplements on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2014:40-49. [PMID: 25055455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Medicines and food supplements containing anthranoid herbal drug preparations were verified on identity of the herbal substance, content of total hydroxyanthracene glycosides and microbiological quality. All examined medicines complied with the fixed requirements whereas all food supplements deviated from 1 or more of the criteria. The food supplements showed a large variability in quality and content.
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[Improving the quality of compounded medicines through self-assessment: proof of concept]. JOURNAL DE PHARMACIE DE BELGIQUE 2014:26-33. [PMID: 25055453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A systematic quality control of compounded medicines, and an associated guidance of community pharmacists, was identified as a complementary opportunity to improve and guarantee the quality of compounded medicines. Before implementing this on a national scale, a pilot project was organized. Fifty pharmacies prepared the same formula and had it checked regarding labelling, preparation reports and analytical parameters. This proof of concept demonstrated that the organisation of quality control of compounded medicines by the professional body itself is feasible. Such audits fit well in de quality assurance systems in place in community pharmacy, where any corrective measures are properly documented and implemented. This form of self-regulation has a preventive character for detecting defects and contributes to improving the quality of the preparations and thus to the patient safety.
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[Glucosamine preparations on the Belgian market: a comparative study]. JOURNAL DE PHARMACIE DE BELGIQUE 2012:24-29. [PMID: 22978012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Fourteen food supplements and one medicine containing glucosamine and formulated as film-coated tablets and capsules, were evaluated with different tests, including uniformity of mass and dosage units, disintegration, identification and assay of glucosamine with a validated HPLC-ELSD method. The medicinal product fulfilled all the fixed requirements whereas three food supplements didn't comply with regard to disintegration (product 7) and content of glucosamine (product 11 and 13).
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Ethinylestradiol and levonorgestrel preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2012:22-27. [PMID: 22536680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Preparations formulated as coated or film-coated tablets, containing levonorgestrel and the combination ethinylestradiol/levonorgestrel, were evaluated in a comparative study. This study comprised in vitro dissolution, assay and content uniformity. The analytical methods were previously validated according to international guidelines. All examined products complied with the postulated requirements.
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MESH Headings
- Belgium
- Chemistry, Pharmaceutical
- Chromatography, High Pressure Liquid
- Contraceptives, Oral, Synthetic/administration & dosage
- Contraceptives, Oral, Synthetic/chemistry
- Contraceptives, Oral, Synthetic/standards
- Drug Combinations
- Ethinyl Estradiol/administration & dosage
- Ethinyl Estradiol/chemistry
- Ethinyl Estradiol/standards
- Levonorgestrel/administration & dosage
- Levonorgestrel/chemistry
- Levonorgestrel/standards
- Reproducibility of Results
- Solubility
- Spectrophotometry, Ultraviolet
- Tablets, Enteric-Coated
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Automatic screening of obstructive sleep apnea from the ECG based on empirical mode decomposition and wavelet analysis. Physiol Meas 2010; 31:273-89. [PMID: 20086277 DOI: 10.1088/0967-3334/31/3/001] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nifedipine preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2009:141-146. [PMID: 20183991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nifedipine preparations formulated as immediate-release capsules and prolonged-release tablets were evaluated with different tests, including in vitro dissolution, assay and content uniformity, and determination of related compounds. The analytical methods were previously validated according to international guidelines. All examined products complied with the postulated requirements but the dissolution test for prolonged-release tablets showed that these products cannot be interchanged.
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Dextromethorphan hydrobromide preparations on the Belgian market--a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2009:15-17. [PMID: 19391437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Liquid preparations for oral use containing dextromethorphan hydrobromide were verified on identity, content and microbiological quality. The assay method was previously validated according to international guidelines. All examined products complied with the postulated requirements.
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Lisinopril and lisinopril/hydrochlorothiazide preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2008; 63:78-83. [PMID: 18972864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Preparations containing lisinopril and the combination lisinopril/hydrochlorothiazide, and formulated as tablets were evaluated with different tests, including in vitro dissolution, assay and content uniformity, and determination of related compounds. The analytical methods were previously validated according to international guidelines. All examined products complied with the postulated requirements.
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Automatic screening of Obstructive Sleep Apnea from the ECG based on Empirical Mode Decomposition and wavelet analysis. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2008; 2008:3608-3611. [PMID: 19163490 DOI: 10.1109/iembs.2008.4649987] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This study proposes three different methods to evaluate Obstructive Sleep Apnea (OSA) during sleep time solely based on the ECG signal. OSA is a common sleep disorder produced by repetitive occlusions of the upper airways, which produces a characteristic pattern on the ECG. Extraction of ECG characteristics as the heart rate variability and the QRS peak area offer alternative measures for cheap, non-invasive and reliable pre-diagnosis of sleep apnea. 50 of the 70 recordings from the database of the Computers in Cardiology Challenge 2000, freely available on Physionet, have been used in this analysis, subdivided in a training and a testing set. We investigated the possibilities concerning the use of the recently proposed method Empirical Mode Decomposition in this application and compared it with the established Wavelet Analysis. From the results of these decompositions the eventual features were extracted, complemented with a series of standard HRV time domain measures and three extra non-linear measures. Of all features smoothed versions were calculated. From the obtained feature set, the best performing feature subset was used as the input of a Linear Discriminant Classifier. In this way we were able to classify the signal on a minute-by-minute basis as apneic or non-apneic with an accuracy of around 90% and to perfectly separate between apneic and normal patients, using around 20 to 40 features and with the possibility to do this in three alternative ways.
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[Omega-3 fatty acid preparations--a comparative study]. JOURNAL DE PHARMACIE DE BELGIQUE 2007; 62:115-119. [PMID: 18269138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Fifteen food supplements and 1 medicine, formulated as soft capsules and containing omega-3 fatty acids, were evaluated with different tests, including desegregation, determination of the anisidine and peroxide values and assay of the omega-3 acids according to the European Pharmacopoeia. All the products contained purified fish oil rich in omega-3 fatty acids, mainly eicosapentaenoic acid (C20:5; EPA) and docosahexaenoic acid (C22:6; DHA), and available as triglycerides, ethyl esters or free fatty acids. The medicinal product complied with the fixed requirements whereas 7 of the 15 food supplements deviated from 1 or more of the criteria with regard to the peroxide value and the content of 1 or more of the fattty acids.
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Propranolol preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2007; 62:80-84. [PMID: 17955956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Propranolol preparations formulated as immediate-release tablets and prolonged-release capsules were evaluated with different tests, including in vitro dissolution and assay with previously validated methods according to the guideline of the European network of Official Medicines Control Laboratories (OMCLs). All examined products complied with our requirements and those described in the European, British and the US Pharmacopoeia and consequently they can be considered as pharmaceutically equivalent.
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Fluconazole preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2006; 61:111-6. [PMID: 17263192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Fluconazole preparations formulated as capsules were evaluated with different tests, including in vitro dissolution and assay with previously validated methods according to the guideline of the European network of Official Medicines Control Laboratories (OMCLs). All examined products complied with our requirements and those described in the European and the US Pharmacopoeia and consequently they can be considered as pharmaceutically equivalent.
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Piracetam preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2005; 60:92-6. [PMID: 16252511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Piracetam preparations formulated as capsules, tablets and granules were evaluated with different tests including in vitro dissolution and assay with previously validated methods according to the guideline of the European network of official medicines control laboratories (OMCLs). All examined products complied with the requirements as described here and in the European Pharmacopoeia except for the dissolution test where 3 products did not meet the USP acceptance criteria applied on the established specification.
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Ginkgo biloba medicines and food supplements on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2005; 60:129-34. [PMID: 16429834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Medicines and food supplements based on the dry extract of the leaves of Ginkgo biloba L. were evaluated by determination of the content of total flavonoids, rutin and terpene lactones by means of liquid chromatography. All examined medicines complied with the fixed requirements whereas all food supplements deviated from 1 or more of the criteria. It could also be demonstrated that some products contained extracts to which rutin was added.
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Ranitidine preparations on the Belgian market: a comparative study. JOURNAL DE PHARMACIE DE BELGIQUE 2004; 59:100-4. [PMID: 15719826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Ranitidine preparations formulated as tablets and granules were evaluated with different tests including in vitro dissolution and assay. Previously the analytical methods of these tests were validated according to the guidelines of the European network of Official Medicines Control Laboratories (OMCLs). All examined products complied to the requirements as described in the European, the British and the US Pharmacopoeia and consequently they can be considered as pharmaceutically equivalent.
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Quantitative determination of ginsenosides from Panax ginseng roots and ginseng preparations by thin layer chromatography--densitometry. J Pharm Biomed Anal 1999; 21:187-92. [PMID: 10701926 DOI: 10.1016/s0731-7085(99)00109-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
Spondias mombin L. (Anacardiaceae), used in traditional medicine because of its antimicrobial properties, was found to contain a series of 6-alkenyl-salicylic acids. They were isolated from the ethanolic extract of leaves and stems of Spondias mombin by a combination of chromatographic methods. Their structure was determined by NMR and MS techniques as (17:3), (17:2) and (17:1) pelandjuaic acid [or 6-(8'Z,11'Z,14'Z-heptadecatrienyl)-salicylic acid, 6-(8'Z,11'Z-heptadecadienyl)-salicylic acid, and 6-(10'Z-heptadecenyl)-salicylic acid, respectively], 6-(12'Z-non-adecenyl)-salicylic acid, and 6-(15'Z-heneicosenyl)-salicylic acid, the two last compounds being new ones. These phenolic acids were shown to have a pronounced antibacterial effect against Bacillus cereus, Streptococcus pyogenes, and Mycobacterium fortuitum (minimal bactericidal concentration in a concentration range of 3-25 micrograms/ml), and a molluscicidal effect against the snail Biomphalaria glabrata, an intermediate host in the schistosome life cycle. Because of their high molluscicidal activity (LC90 down to 1-3 ppm), these long-chain salicylic acid derivatives may be important tools in the prevention of schistosomiasis.
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Determination of the double bond position in long-chain 6-alkenyl salicylic acids by collisional activation. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/bms.1200221105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mass spectral characterization of C-glycosidic flavonoids isolated from a medicinal plant (Passiflora incarnata). JOURNAL OF CHROMATOGRAPHY 1991; 562:435-46. [PMID: 2026709 DOI: 10.1016/0378-4347(91)80597-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The four major C-glycosidic flavonoids isolated from Passiflora incarnata were identified as schaftoside, isoschaftoside, isovetexin-2''-O-glucopyranoside and isoorientin-2''-O-glucopyranoside on the basis of mass spectral and 13C NMR data. The daughter ion spectra of [M + H]+ ions of schaftoside and isoschaftoside showed differences for the [M + H - 104]+ ions, which could be rationalized by hydrogen bonding effects. In the negative-ion mode, pronounced differences were found for the [M - H - 90]- and [M - H - 120]- ions, formed by prevalent fragmentation in the C-6-linked sugar moiety. With respect to isovitexin-2''-O-beta-glucopyranoside and isoorientin-2''-O-beta-glucopyranoside, the daughter ion spectra of both the [M + H]+ and [M - H]- ions provided evidence for a 1----2 linkage in the diglucosidic moiety. Support for C-6 glucosylation was obtained by recording the daughter ion spectra of [M - H - 162]- ions, which were in good agreement with that obtained for [M - H]- ions of isovitexin.
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Plant antiviral agents, VI. Isolation of antiviral phenolic glucosides from Populus cultivar Beaupre by droplet counter-current chromatography. JOURNAL OF NATURAL PRODUCTS 1989; 52:875-878. [PMID: 2809612 DOI: 10.1021/np50064a038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bioassay-guided isolation of the 80% EtOH extract of the leaves of Populus cultivar Beaupré by means of dccc afforded four known phenolic glucosides. Salicin and salireposide were shown to be, at least partially, responsible for the antiviral activity of the extract against poliomyelitis and Semliki forest viruses.
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Umuhengerin, a new antimicrobially active flavonoid from Lantana trifolia. JOURNAL OF NATURAL PRODUCTS 1988; 51:966-8. [PMID: 3204384 DOI: 10.1021/np50059a026] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
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