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https://www.readbyqxmd.com/read/28241514/antivenom-evaluation-by-electrophysiological-analysis
#1
Rita Restano-Cassulini, Walter Garcia, Jorge F Paniagua-Solís, Lourival D Possani
Scorpion stings on humans are medically relevant because they may contain toxins that specifically target ion channels. During antivenom production, pharmaceutical companies must use a large number of experimental animals to ensure the antivenom's efficacy according to pharmacopeia methods. Here we present an electrophysiological alternative for the evaluation of horse antivenoms produced against two species of Moroccan scorpions: Buthus mardochei and Androctonus mauretanicus. Human sodium and potassium channels and acetylcholine nicotinic receptors were analyzed by standard patch-clamp techniques...
February 23, 2017: Toxins
https://www.readbyqxmd.com/read/28241116/molecular-factors-governing-the-liquid-and-glassy-states-recrystallization-of-celecoxib-in-binary-mixtures-with-excipients-of-different-molecular-weights
#2
K Grzybowska, K Chmiel, J Knapik, A Grzybowski, K Jurkiewicz, M Paluch
Transformation of poorly water-soluble crystalline pharmaceuticals to the amorphous form is one of the most promising strategies to improve their oral bioavailability. Unfortunately, the amorphous drugs are usually thermodynamically unstable and may quickly return to their crystalline form. A very promising way to enhance the physical stability of amorphous drugs is to prepare amorphous compositions of APIs with certain excipients which can be characterized by significantly different molecular weights, such as polymers, acetate saccharides, and other APIs...
February 27, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28241010/novel-biphenyl-ester-derivatives-as-tyrosinase-inhibitors-synthesis-crystallographic-spectral-analysis-and-molecular-docking-studies
#3
Huey Chong Kwong, C S Chidan Kumar, Siau Hui Mah, Tze Shyang Chia, Ching Kheng Quah, Zi Han Loh, Siddegowda Chandraju, Gin Keat Lim
Biphenyl-based compounds are clinically important for the treatments of hypertension and inflammatory, while many more are under development for pharmaceutical uses. In the present study, a series of 2-([1,1'-biphenyl]-4-yl)-2-oxoethyl benzoates, 2(a-q), and 2-([1,1'-biphenyl]-4-yl)-2-oxoethyl pyridinecarboxylate, 2(r-s) were synthesized by reacting 1-([1,1'-biphenyl]-4-yl)-2-bromoethan-1-one with various carboxylic acids using potassium carbonate in dimethylformamide at ambient temperature. Single-crystal X-ray diffraction studies revealed a more closely packed crystal structure can be produced by introduction of biphenyl moiety...
2017: PloS One
https://www.readbyqxmd.com/read/28240539/intrinsic-ultrahigh-drug-mirna-loading-capacity-of-biodegradable-bioactive-glass-nanoparticles-towards-highly-efficient-pharmaceutical-delivery
#4
Meng Yu, Yumeng Xue, Peter X Ma, Cong Mao, Bo Lei
The lack of safe and efficient drug/gene delivery vectors has become a major obstacle for the clinical applications of drug/non-viral gene therapy. To date, for non-viral gene vectors, most of studies are focused on cationic polymers, liposomes and modified inorganic nanoparticles which have shown high cellular toxicity or low transfection efficiency or non-degradation. Additionally, few biodegradable biomaterials demonstrate intrinsic high binding abilities to both drug and gene. Bioactive glasses (BGs) have achieved successful applications in bone regeneration due to their high biocompatibility and biodegradation...
February 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28240353/carbamazepine-versus-phenytoin-monotherapy-for-epilepsy-an-individual-participant-data-review
#5
REVIEW
Sarah J Nevitt, Anthony G Marson, Jennifer Weston, Catrin Tudur Smith
BACKGROUND: This is an updated version of the original Cochrane Review published in Issue 2, 2002 and its subsequent updates in 2010 and 2015.Epilepsy is a common neurological condition in which recurrent, unprovoked seizures are caused by abnormal electrical discharges from the brain. It is believed that with effective drug treatment, up to 70% of individuals with active epilepsy have the potential to become seizure-free and go into long-term remission shortly after starting drug therapy with a single antiepileptic drug in monotherapy...
February 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28240312/a-simple-capacitive-method-to-evaluate-ethanol-fuel-samples
#6
Tatiana P Vello, Rafael F de Oliveira, Gustavo O Silva, Davi H S de Camargo, Carlos C B Bufon
Ethanol is a biofuel used worldwide. However, the presence of excessive water either during the distillation process or by fraudulent adulteration is a major concern in the use of ethanol fuel. High water levels may cause engine malfunction, in addition to being considered illegal. Here, we describe the development of a simple, fast and accurate platform based on nanostructured sensors to evaluate ethanol samples. The device fabrication is facile, based on standard microfabrication and thin-film deposition methods...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28240269/connecting-genetic-risk-to-disease-end-points-through-the-human-blood-plasma-proteome
#7
Karsten Suhre, Matthias Arnold, Aditya Mukund Bhagwat, Richard J Cotton, Rudolf Engelke, Johannes Raffler, Hina Sarwath, Gaurav Thareja, Annika Wahl, Robert Kirk DeLisle, Larry Gold, Marija Pezer, Gordan Lauc, Mohammed A El-Din Selim, Dennis O Mook-Kanamori, Eman K Al-Dous, Yasmin A Mohamoud, Joel Malek, Konstantin Strauch, Harald Grallert, Annette Peters, Gabi Kastenmüller, Christian Gieger, Johannes Graumann
Genome-wide association studies (GWAS) with intermediate phenotypes, like changes in metabolite and protein levels, provide functional evidence to map disease associations and translate them into clinical applications. However, although hundreds of genetic variants have been associated with complex disorders, the underlying molecular pathways often remain elusive. Associations with intermediate traits are key in establishing functional links between GWAS-identified risk-variants and disease end points. Here we describe a GWAS using a highly multiplexed aptamer-based affinity proteomics platform...
February 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28240178/efficient-colonic-delivery-of-dsirna-by-pectin-coated-polyelectrolyte-complex-nanoparticles-preparation-characterization-and-improved-gastric-survivability
#8
Zahid Hussain, Haliza Katas, Set Li Yan, Diyanadalila Jamaludin
BACKGROUND: Despite having excellent anticancer efficacy and ability to knockdown gene expression, the therapeutic feasibility of Dicer-substrate small interference RNA (DsiRNA) is limited due to its poor cellular uptake, chemical instability and rapid degradation in biological environments. OBJECTIVE: The present study was aimed to circumvent the pharmaceutical issues related to DsiRNA delivery to colon for the treatment of colorectal cancer. METHOD: In this study, we have prepared water-soluble chitosan (WSC)-DsiRNA complex nanoparticles (NPs) by a simple complexation method and subsequently coated with pectin to protect DsiRNA from gastric milieu...
February 24, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/28239479/the-changing-landscape-of-expanded-access-to-investigational-drugs-for-patients-with-unmet-medical-needs-ethical-implications
#9
EDITORIAL
Eline M Bunnik, Nikkie Aarts, Suzanne van de Vathorst
When patients are told that standard medical treatment options have been exhausted, their treating physicians may start looking for promising new drugs that are not yet approved, and still under investigation. Some patients can be included in clinical trials, but others cannot. It is not widely known that these patients might still be eligible for trying investigational drugs, in a therapeutic context. Worldwide, public and private parties are seeking to change this by informing patients and physicians about opportunities for expanded access and/or by facilitating its processes...
2017: Journal of Pharmaceutical Policy and Practice
https://www.readbyqxmd.com/read/28239427/food-components-and-contaminants-as-anti-androgenic-molecules
#10
REVIEW
Daniele Marcoccia, Marco Pellegrini, Marco Fiocchetti, Stefano Lorenzetti, Maria Marino
Androgens, the main male sex steroids, are the critical factors responsible for the development of the male phenotype during embryogenesis and for the achievement of sexual maturation and puberty. In adulthood, androgens remain essential for the maintenance of male reproductive function and behavior. Androgens, acting through the androgen receptor (AR), regulate male sexual differentiation during development, sperm production beginning from puberty, and maintenance of prostate homeostasis. Several substances present in the environment, now classified as endocrine disruptors (EDCs), strongly interfere with androgen actions in reproductive and non-reproductive tissues...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28239351/reported-adverse-drug-reactions-in-infants-a-nationwide-analysis-in-malaysia
#11
Rosliana Rosli, Ahmad Fauzi Dali, Noorizan Abd Aziz, Long Chiau Ming, Mohamed Mansor Manan
Spontaneous adverse drug reactions (ADRs) reporting is a useful source of drug safety information in infants as only adult patients are routinely tested in clinical trials. This study was aimed to evaluate the spontaneously reported ADRs using WHO Adverse Reaction Terminology and to identify the common drugs associated with ADRs in children under 2 years of age. A retrospective analysis of ADR data for children below 2 years old from 2000 to 2013 was conducted using the data extracted from Malaysia's national pharmacovigilance database, QUEST2 System...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28239063/fatty-acid-and-lipid-class-composition-of-the-microalga-phaeodactylum-tricornutum
#12
Yu-Hong Yang, Lei Du, Masashi Hosokawa, Kazuo Miyashita, Yume Kokubun, Hisayoshi Arai, Hiroyuki Taroda
n-3 Polyunsaturated fatty acids (PUFAs) are essential for the prevention and/or risk reduction of some diseases, including cardiovascular diseases and cancer. Therefore, PUFAs-rich marine microalgae have received considerable research attention. The diatom Phaeodactylum tricornutum, a rich source of lipids and fucoxanthin, has commercial applications in the food and pharmaceutical industries. In this study, the lipid class composition and fatty acid distribution in P. tricornutum under high-density and scale-up cultivation were investigated by thin-layer chromatography and gas chromatography...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239024/in-practical-training-a-questionnaire-survey-and-analysis-to-pharmacy-students-of-the-utilization-situation-of-the-course-contents-of-pharmacy-school
#13
Masato Okubo, Yuka Takahashi, Jun Yamashita, Hideyo Takahashi, Okiko Miyata, Takaaki Suzuki, Itsuko Ishii
  Pharmacy education comprises basic pharmacy (organic chemistry, biochemistry, and physical chemistry) and applied pharmacy (clinical pharmacy, pharm aceutics, and chemical hygiene). Students are expected to apply these subjects studied in pharmacy school during their practical pharmacy training. However, knowledge gained in university does not appear to be fully utilized in practice. We hypothesized that this is due to a lack of connection between pre-practical training education and actual practical training...
February 24, 2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28238807/beyond-amino-acids-use-of-the-corynebacterium-glutamicum-cell-factory-for-the-secretion-of-heterologous-proteins
#14
Roland Freudl
The Gram-positive soil bacterium Corynebacterium glutamicum has a long tradition in industry as a potent cell factory for the production of various amino acids. Besides this, in the last few years it became increasingly clear that this microorganism can also efficiently be used as a host organism for the expression and secretion of biotechnologically or pharmaceutically relevant heterologous proteins. In this review, first a short overview is given on the two main protein export pathways (Sec and Tat) of C...
February 23, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28238340/payers-experiences-with-confidential-pharmaceutical-price-discounts-a-survey-of-public-and-statutory-health-systems-in-north-america-europe-and-australasia
#15
Steven G Morgan, Sabine Vogler, Anita K Wagner
Institutional payers for pharmaceuticals worldwide appear to be increasingly negotiating confidential discounts off of the official list price of pharmaceuticals purchased in the community setting. We conducted an anonymous survey about experiences with and attitudes toward confidential discounts on patented pharmaceuticals in a sample of high-income countries. Confidential price discounts are now common among the ten health systems that participated in our study, though some had only recently begun to use these pricing arrangements on a routine basis...
February 16, 2017: Health Policy
https://www.readbyqxmd.com/read/28238262/a-cell-free-protein-synthesis-approach-to-biosensing-htrb-specific-endocrine-disruptors
#16
Amin S M Salehi, Miriam J Shakalli Tang, Mark Thomas Smith, Jeremy M Hunt, Robert A Law, David W Wood, Bradley Charles Bundy
Here we introduce a Rapid Adaptable Portable In-vitro Detection biosensor platform (RAPID) for detecting ligands that interact with NHRs. The RAPID platform can be adapted for field use, allowing rapid evaluation of EDC presence or absence in environmental samples, and could also be applied for drug screening. The biosensor is based on an engineered, allosterically-activated fusion protein, which contains the ligand-binding domain (LBD) from a target NHR (human thyroid receptor in this work). In vitro expression of this protein using cell-free protein synthesis (CFPS) technology in the presence of an EDC leads to activation of a reporter enzyme, reported through a straightforward colorimetric assay output...
February 26, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28238082/a-novel-bicistronic-expression-system-composed-of-the-intraflagellar-transport-protein-gene-ift25-and-fmdv-2a-sequence-directs-robust-nuclear-gene-expression-in-chlamydomonas-reinhardtii
#17
Bin Dong, He-He Hu, Zhen-Fang Li, Rong-Qiang Cheng, De-Mei Meng, Junping Wang, Zhen-Chuan Fan
Chlamydomonas reinhardtii offers a great promise for large-scale production of multiple recombinant proteins of pharmaceutical and industrial interest. However, the nuclear-encoding transgenes usually are expressed at a low level, which severely hampers the use of this alga in molecular farming. In this study, the promoter of the endogenous intraflagellar transport 25 (IFT25) gene of C. reinhardtii was tested for its ability to drive the expression of green fluorescent protein (GFP), which functions as a readout for target gene expression...
February 25, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28237900/synthesis-of-novel-monomeric-graphene-quantum-dots-and-corresponding-nanocomposite-with-molecularly-imprinted-polymer-for-electrochemical-detection-of-an-anticancerous-ifosfamide-drug
#18
Bhim Bali Prasad, Anil Kumar, Ragini Singh
This paper reports a typical synthesis of a nanocomposite of functionalized graphene quantum dots and imprinted polymer at the surface of screen-printed carbon electrode using N-acryloyl-4-aminobenzamide, as a functional monomer, and an anticancerous drug, ifosfamide, as a print molecule (test analyte). Herein, graphene quantum dots in nanocomposite practically induced the electrocatalytic activity by lowering the oxidation overpotential of test analyte and thereby amplifying electronic transmission, without any interfacial barrier in between the film and the electrode surface...
February 20, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28237713/poly-l-glutamic-acid-drug-delivery-system-for-the-intravesical-therapy-of-bladder-cancer-using-wga-as-targeting-moiety
#19
C Apfelthaler, M Anzengruber, F Gabor, M Wirth
In the management of bladder cancer, surgical resection of the tumour is usually followed by intravesical instillation of immunomodulatives and/or chemotherapeutics. The purpose of this local intravesical therapy is to eliminate residual malignant cells after surgical intervention. The main limitation of a localised adjuvant therapy is the insufficient concentration of the active pharmaceutical ingredient (API) in malignant cells due to the unique structure of the human urothelium making it an exclusively hard to overcome barrier in the human body...
February 22, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28237572/preparation-characterization-and-%C3%AE-glycosidase-inhibition-activity-of-a-carboxymethylated-polysaccharide-from-the-residue-of-sarcandra-glabra-thunb-nakai
#20
Wei Liu, Cheng Hu, Yameng Liu, Shijie Dai, Weisheng Lu, Xing Lv, Wenbing Yao, Xiangdong Gao
A carboxymethylated polysaccharide (CMSERP) was prepared from the residue of Sarcandra glabra (Thunb.) Nakai. CMSERP was mainly composed of galacturonic acid (GalA), glucose (Glc), galactose (Gal), glucuronic acid (GlcA), arabinose (Ara), rhamnose (Rha), xylose (Xyl), ribose (Rib), and fucose (Fuc) at the ratio of 29.79: 19.30: 11.92: 6.32: 4.68: 3.95: 3.39: 2.31: 1.00. The primary structure features of CMSERP were determined to be a pectin like polysaccharide according to FT-IR, NMR and HPAEC-PAD. The results of HPSEC-MALLS-RID and DLS indicated the Mw, Mn, Mz, and S(2)Z(1/2) of CMSERP were 5...
February 22, 2017: International Journal of Biological Macromolecules
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