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https://www.readbyqxmd.com/read/28109083/green-pharmaceutical-analysis-of-drugs-coformulated-with-highly-different-concentrations-using-spiking-and-manipulation-of-their-ratio-spectra
#1
Bassam M Ayoub
Introducing green analysis to pharmaceuticalproducts is considered a significant approach topreserving the environment. This method can be anenvironmentally friendly alternative to the existingmethods, accompanied by a validated automatedprocedure for the analysis of a drug with the lowestpossible number of samples. Different simplespectrophotometric methods were developed forthe simultaneous determination of empagliflozin(EG) and metformin (MT) by manipulating their ratiospectra in their application on a recently approvedpharmaceutical combination, Synjardy tablets...
January 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28109021/affordable-orphan-drugs-a-role-for-not-for-profit-organisations
#2
E H Davies, E Fulton, D Brook, D A Hughes
The success of the Regulation on Orphan Medicinal Products in the European Union is evidenced by the 127 orphan drugs that have had market authorisation since 2000. However the incentives aimed to stimulate research and development have had the unintended consequence of increasing drug cost, resulting in many orphan drugs not being cost-effective. Orphan drugs command an increasing share of the pharmaceutical market and account for a disproportionate amount of healthcare expenditure. Orphan drug ownership by socially motivated, not-for-profit organisations may facilitate access to more affordable orphan drugs, for the benefit of patients and healthcare systems alike...
January 20, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28108764/letr-is-a-tetr-family-transcription-factor-from-lysobacter-controlling-antifungal-antibiotic-biosynthesis
#3
Ping Wang, Hongfu Chen, Guoliang Qian, Fengquan Liu
Heat-stable antifungal factor (HSAF) is a newly identified and broad-spectrum antifungal antibiotic from Lysobacter enzymogenes, a ubiquitous environmental proteobacterium. Yet, the regulatory mechanism for HSAF biosynthesis in L. enzymogenes remains poorly understood. Here, we report the identification of a TetR-family protein Le1552 (LetR) from L. enzymogenes strain OH11 that is involved in transcriptional repression of HSAF production. Bacterial one-hybrid and gel mobility shift assays show that LetR directly binds to PHSAF (the promoter region of the HSAF biosynthesis operon)...
January 20, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28108380/the-taste-of-heat-how-humoral-qualities-act-as-a-cultural-filter-for-chemosensory-properties-guiding-herbal-medicine
#4
Matthias S Geck, Stefano Cabras, Laura Casu, Alberto J Reyes García, Marco Leonti
ETHNOPHARMACOLOGICAL RELEVANCE: Organoleptic properties, and more specifically chemosensory cues, have been shown to guide therapeutic applications of medicinal plants. Humoral qualities, on the other hand, are widely believed to be an abstract concept, mainly applied post hoc to validate therapy. However, the nexus between humoral qualities, chemosensory properties, and medicinal plant uses has never been systematically assessed. AIM OF THE STUDY: To systematically analyse the correlations between chemosensory properties, humoral qualities, and medicinal uses of selected botanical drugs...
January 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28108379/-dark-singlet-oxygen-and-epr-spin-trapping-as-convenient-tools-to-assess-photolytic-drug-degradation
#5
Peter Persich, Steven Hostyn, Céline Joie, Guy Winderickx, Jeroen Pikkemaat, Edwin P Romijn, Bert U W Maes
Forced degradation studies are an important tool for a systematic assessment of decomposition pathways and identification of reactive sites in active pharmaceutical ingredients (APIs). Two methodologies have been combined in order to provide a deeper understanding of singlet-oxygen related degradation pathways of APIs under light irradiation. Firstly, we report that a "dark" singlet oxygen test enables the investigation of drug reactivity towards singlet oxygen independently of photolytic irradiation processes...
January 17, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28108108/pharmaceuticals-and-personal-care-products-in-plants
#6
REVIEW
Mireia Bartrons, Josep Peñuelas
Pharmaceuticals and personal-care products (PPCPs) derived from agricultural, urban, and industrial areas accumulate in plants at concentrations (ng to μg kg(-1)) that can be toxic to the plants. Importantly, the dietary intake of these PPCP-contaminated plants may also pose a risk to human health, but currently little is known about the fate of PPCPs in plants and their effect on or risk to the ecosystem. In this Opinion article we propose that in-depth research on the use of plants as a monitoring device for assessing the use and environmental presence of PPCPs is warranted...
January 17, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28108094/metabolic-profiling-identification-of-metabolites-formed-in-mediterranean-mussels-mytilus-galloprovincialis-after-diclofenac-exposure
#7
Bénilde Bonnefille, Lauren Arpin-Pont, Elena Gomez, Hélène Fenet, Frédérique Courant
Despite the growing concern on the presence of pharmaceutically active compounds in the environment, few studies have been conducted on their metabolism in marine organisms. In this study, a non-targeted strategy based on the generation of chemical profiles generated by liquid chromatography combined with high resolution mass spectrometry was used to highlight metabolite production by the Mediterranean mussel (Mytilus galloprovincialis) after diclofenac exposure. This method allowed revealing the production of 13 metabolites in mussel tissues...
January 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28108073/reference-control-data-obtained-from-an-in-vivo-comet-micronucleus-combination-assay-using-sprague-dawley-rats
#8
Sawako Kasamoto, Shoji Masumori, Jin Tanaka, Maya Ueda, Masahito Fukumuro, Miho Nagai, Jyoji Yamate, Makoto Hayashi
According to the International Conference on Harmonization Guidance on Genotoxicity Testing and Data Interpretation for Pharmaceuticals Intended for Human Use (ICH S2(R1)), a positive response in any in vitro assay necessitates additional in vivo test(s) (other tissue/endpoint) in addition to the erythrocyte micronucleus test when Option 1 of the test battery is selected. When Option 2 of the test battery is selected, a bacterial gene mutation test and two in vivo tests with different tissues/endpoint are required...
January 17, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28107994/application-of-passive-sampling-devices-based-on-multi-walled-carbon-nanotubes-for-the-isolation-of-selected-pharmaceuticals-and-phenolic-compounds-in-water-samples-possibilities-and-limitations
#9
Aleksandra Jakubus, Magdalena Tyma, Piotr Stepnowski, Monika Paszkiewicz
Nowadays, carbon nanotubes, as commercially available materials, have attracted great attention because of their unique physicochemical properties, especially their strong adsorption abilities. This paper deals with the possibilities and limitations of the application of multi-walled carbon nanotubes as an alternative sorbent in passive sampling devices for the isolation of selected pharmaceuticals and phenolic compounds directly in water samples. Compounds with different properties, including sulfapyridine, sulfamethoxazole, carbamazepine, p-nitrophenol, 17-β-estradiol, 3,5-dichlorophenol and diclofenac were selected as model compounds...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107993/using-multiple-process-analytical-technology-probes-to-monitor-multivitamin-blends-in-a-tableting-feed-frame
#10
Pedro Durão, Clémence Fauteux-Lefebvre, Jean-Maxime Guay, Nicolas Abatzoglou, Ryan Gosselin
As Process Analytical Technology (PAT) implementation grows in the pharmaceutical industry, more studies are being performed to evaluate its suitability in new applications and processes within the manufacturing chain. As the last step in tablet production, the compression stage represents a critical phase that ensures product quality. In-line control put in place at this stage has the potential to detect powder blends that are out of specification limits and, thus, help to improve product quality. The objectives of the present project are to quantify the composition of a commercial 31-component multivitamin powder blend in real time on an industrial feed frame, using 3 different PAT tools: light-induced fluorescence spectroscopy, near infrared spectroscopy and red, green and blue color imaging...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107918/bismuth-nanoparticles-carbon-nanotubes-modified-sensor-for-sulfasalazine-analysis
#11
Biljana Nigović, Sandra Jurić, Iva Mitrović
Nanocomposite of bismuth nanoparticles and carbon nanotubes in Nafion matrix was used as modifier for glassy carbon electrode in analysis of anti-inflamatory drug sulfasalazine. The nanocomposite surface exhibited exceptional synergy and remarkable enhancement effect to the voltammetric response of drug. The surface morphology and structure characterization of the modified electrodes was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and cyclic voltammetry. The sensor exhibited excellent electroanalytical performance for drug determination in comparison with bismuth film electrode...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107915/a-clean-photometric-method-for-the-determination-of-losartan-potassium-in-pharmaceuticals-exploiting-light-scattering-effect-and-employing-a-multicommuted-flow-analysis-approach
#12
Manoel J A Lima, Boaventura F Reis
This paper describes an environmentally friendly procedure for the determination of losartan potassium (Los-K) in pharmaceuticals. The photometric method was based on the light scattering effect due to particles suspension, which were formed by the reaction of Los-K with Cu (II) ions. The method was automated employing a multicommuted flow analysis approach, implemented using solenoid mini-pumps for fluid propelling and a homemade LED based photometer. Under the optimized experimental conditions, the procedure showed a linear relationship in the concentration range of 23...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107913/quantitative-structure-retention-relationship-model-for-the-determination-of-naratriptan-hydrochloride-and-its-impurities-based-on-artificial-neural-networks-coupled-with-genetic-algorithm
#13
Mikołaj Mizera, Anna Krause, Przemysław Zalewski, Robert Skibiński, Judyta Cielecka-Piontek
Mathematical modeling of Quantitative Structure - Property Relationships met great interest in fields of in silico drug design and more recently, pharmaceutical analysis. In our approach we proposed automated method of creation Quantitative Structure-Retention Relationship (QSRR) for analysis of triptans, selective serotonin 5-HT1 receptor agonists used for the treatment of acute headache. The method was created using hybrid machine learning approach, namely Genetic algorithm (GA) coupled with artificial neutral networks (ANN)...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107722/microalgae-biorefinery-high-value-products-perspectives
#14
Kit Wayne Chew, Jing Ying Yap, Pau Loke Show, Ng Hui Suan, Joon Ching Juan, Tau Chuan Ling, Duu-Jong Lee, Jo-Shu Chang
Microalgae have received much interest as a biofuel feedstock in response to the uprising energy crisis, climate change and depletion of natural sources. Development of microalgal biofuels from microalgae does not satisfy the economic feasibility of overwhelming capital investments and operations. Hence, high-value co-products have been produced through the extraction of a fraction of algae to improve the economics of a microalgae biorefinery. Examples of these high-value products are pigments, proteins, lipids, carbohydrates, vitamins and anti-oxidants, with applications in cosmetics, nutritional and pharmaceuticals industries...
January 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28107690/time-domain-nmr-as-a-new-process-monitoring-method-for-characterization-of-pharmaceutical-hydrates
#15
Stefanie Ulrike Schumacher, Benno Rothenhäusler, Alf Willmann, Jürgen Thun, Regina Moog, Martin Kuentz
Hydrates are of great pharmaceutical relevance and even though they have been characterized thoroughly by various analytical techniques, there is barely literature available on molecular mobility of the hydrate water studied by NMR relaxation in the time domain. The aim of this work was to examine the possibility of differentiating hydration states of drugs by (1)H time domain NMR (TD-NMR) regarding spin-spin and spin-lattice relaxation times (T2 and T1) using benchtop equipment. Caffeine and theophylline were selected as model compounds and binary mixtures of hydrate to anhydrate were analyzed for each drug using a spin echo and inversion recovery pulse sequence...
January 9, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28107670/pharmaceutical-opioid-use-among-oral-and-intravenous-users-in-australia-a-qualitative-comparative-study
#16
George Dertadian, Jenny Iversen, Thomas C Dixon, Katrina Sotiropoulos, Lisa Maher
BACKGROUND: Between 1992 and 2012 dispensing episodes for pharmaceutical opioids (PO) in Australia increased from 500000 to 7500000. In the US, increases in the prescription of PO have been linked to increases in opioid-related morbidity and mortality and transitions to heroin injection. However, Australian data indicate that morbidity and mortality related to PO are relatively low, particularly when compared to heroin and other drugs. This paper explores the characteristics and patterns of non-medical pharmaceutical opioid (NMPO) use among a sample of young people in Sydney, Australia...
January 17, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28107530/broad-scale-genetic-diversity-of-cannabis-for-forensic-applications
#17
Christophe Dufresnes, Catherine Jan, Friederike Bienert, Jérôme Goudet, Luca Fumagalli
Cannabis (hemp and marijuana) is an iconic yet controversial crop. On the one hand, it represents a growing market for pharmaceutical and agricultural sectors. On the other hand, plants synthesizing the psychoactive THC produce the most widespread illicit drug in the world. Yet, the difficulty to reliably distinguish between Cannabis varieties based on morphological or biochemical criteria impedes the development of promising industrial programs and hinders the fight against narcotrafficking. Genetics offers an appropriate alternative to characterize drug vs...
2017: PloS One
https://www.readbyqxmd.com/read/28107087/comparison-of-fatty-acid-composition-in-selected-dietary-supplements-containing-conjugated-linoleic-acid
#18
Dorota Derewiaka, Klara Nestorowicz, Rafał Wołosiak
The market of pharmaceutical products is offering a wide range of supplements. Most of the consumers believe that these products will improve their state of health, but are they getting what they want and what they are paying for? The aim of the study was to evaluate the quality of selected dietary supplements containing conjugated linoleic acid (CLA). All supplements were available in the Warsaw markets and bought from pharmacies. Assessment of the quality of food supplements was achieved by analysis of fatty acid using gas chromatography coupled with a mass spectrometer...
January 20, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28107082/mechanistic-insight-of-probiotics-derived-anticancer-pharmaceuticals-a-road-forward-for-cancer-therapeutics
#19
Raman Kumar, Suman Dhanda
Probiotics are living organisms that confer health benefits when administered in adequate amounts. Probiotics are continuously being explored for their different health beneficiary activities. Anticancer activity is one of the most important benefits both from a preventive and therapeutic point of view. Though not many studies have been conducted to date in this area, a number suggest using laboratory animal models and different cell lines that there may be a mechanistic basis for the anticancer effects of probiotics and require more scientific justification and clinical trials...
January 20, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28107022/substituted-pyrrololactams-via-ring-expansion-of-spiro-2h-pyrroles-from-intermolecular-alkyne-isocyanide-click-reactions
#20
Jimil George, Hun Young Kim, Kyungsoo Oh
The facile synthesis of 6- to 8-membered pyrrololactams has been developed using a ring expansion of spiro-2H-pyrroles, the products of intermolecular alkyne-isocyanide click reactions. The key to successful ring expansion of spiro-2H-pyrroles to pyrrololactams is the enforced orbital overlap between the internal alkene and the amide carbonyl group through the conformationally locked bicyclic structures. The newly disclosed α-isocyano lactams, substrates for click reactions, should find their utility in the synthesis of pharmaceutically important heterocyclic compounds...
January 20, 2017: Organic Letters
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