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Kay Marquardt et al.
International journal of pharmaceutics, 479(1), 150-158 (2014-12-30)
RNA-cleaving DNAzymes are a potential novel class of nucleic acid-based active pharmaceutical ingredients (API). However, developing an appropriate drug delivery system (DDS) that achieves high bioavailability is challenging. Especially in a dermal application, DNAzymes have to overcome physiological barriers composed
Miina Ruokolainen et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 65, 45-55 (2014-09-16)
The aim of this study was to investigate the feasibility of titanium dioxide (TiO2) photocatalysis for oxidation of anabolic steroids and for imitation of their phase I metabolism. The photocatalytic reaction products of five anabolic steroids were compared to their
Zita Pöstényi et al.
Journal of pharmaceutical and biomedical analysis, 102, 529-534 (2014-12-03)
Validated HPLC analysis was developed in order to monitor the level of 4-fluorodeprenyl in rats. Male Wistar rats were intraperitoneally treated with 30 mg/kg of (-)-4-fluorodeprenyl. The rats were sacrificed after 5, 15, 30 and 60 min of treatment, and
Biebele Abel et al.
Journal of immunological methods, 411, 43-49 (2014-06-21)
In this study, we report the use of an enzyme-based hybrid platform, which is comprised of silver island films, enzymes (HRP and AP) and high-throughput screening (HTS) microplates, to enhance the colorimetric response of enzymatic reactions. The hybrid platform was
Xu Wang et al.
The Analyst, 140(5), 1453-1458 (2015-01-21)
A simple, sensitive and cost-effective method for the analysis of the mycotoxin aflatoxin B1 (AFB1) has been established based on controlled growth of immunogold. AFB1-BSA conjugate modified magnetic beads were employed as capture probe and anti-AFB1 antibody-coated gold colloids were
R Kanďár et al.
Andrologia, 46(10), 1079-1088 (2013-10-16)
A method is described here for the determination of total glutathione (TGSH) and glutathione disulphide (GSSG) in the seminal plasma of the male partners of couples requesting a fertility evaluation. A suitable sample preparation procedure prior to high-performance liquid chromatography
D Draganescu et al.
International journal of biological macromolecules, 72, 614-623 (2014-09-23)
Flaxseed lignans are a natural source of useful biologically active components that show a diverse spectrum of health-promoting properties. The valuable effects of the phenolic molecules are mainly due to their antioxidant activity by preventing oxidative stress and stimulate collagen
Jake Chng et al.
mAbs, 7(2), 403-412 (2015-01-27)
Linking the heavy chain (HC) and light chain (LC) genes required for monoclonal antibodies (mAb) production on a single cassette using 2A peptides allows control of LC and HC ratio and reduces non-expressing cells. Four 2A peptides derived from the
Filis Kazazi-Hyseni et al.
Pharmaceutical research, 31(10), 2844-2856 (2014-05-16)
The aim of this study was the development of poly(D,L-lactide-co-glycolide) (PLGA) microspheres with controlled porosity, to obtain microspheres that afford continuous release of a macromolecular model compound (blue dextran). PLGA microspheres with a size of around 40 μm and narrow size
Tyler W Stradleigh et al.
The Journal of comparative neurology, 523(4), 545-564 (2014-10-07)
Protocols for characterizing cellular phenotypes commonly use chemical fixatives to preserve anatomical features, mechanically stabilize tissue, and stop physiological responses. Formaldehyde, diluted in either phosphate-buffered saline or phosphate buffer, has been widely used in studies of neurons, especially in conjunction
C Tony Liu et al.
Journal of the American Chemical Society, 136(29), 10349-10360 (2014-07-01)
Electrostatic interactions play an important role in enzyme catalysis by guiding ligand binding and facilitating chemical reactions. These electrostatic interactions are modulated by conformational changes occurring over the catalytic cycle. Herein, the changes in active site electrostatic microenvironments are examined
Radoslaw Kwapiszewski et al.
Analytical and bioanalytical chemistry, 406(18), 4551-4556 (2014-05-13)
Interest in the microfluidic environment, owing to its unique physical properties, is increasing in much innovative chemical, biological, or medicinal research. The possibility of exploiting and using new phenomena makes the microscale a powerful tool to improve currently used macroscopic
F Kazazi-Hyseni et al.
International journal of pharmaceutics, 482(1-2), 99-109 (2014-12-17)
Poly(D,L-lactic-co-hydroxymethyl glycolic acid) (PLHMGA) is a biodegradable copolymer with potential as a novel carrier in polymeric drug delivery systems. In this study, the biocompatibility of PLHMGA microspheres (PLHMGA-ms) was investigated both in vitro in three different cell types (PK-84, HK-2
Che-Fan Huang et al.
Journal of peptide science : an official publication of the European Peptide Society, 21(2), 114-119 (2015-01-06)
Protein oxidation by reactive oxygen species has been associated with aging and neurodegenerative disorders, and histidine is one of the major oxidation targets due to its metal-chelating property and susceptibility to metal-catalyzed oxidation. 2-Oxohistidine, the major product of histidine oxidation
Chee Shan Lim et al.
Physical chemistry chemical physics : PCCP, 16(24), 12178-12182 (2014-05-13)
Graphene materials are very popular in the field of biosensing owing to their distinctive characteristics. However, oxygen-containing groups are known to exist intrinsically in graphene-related materials. These groups influence the electrochemical properties of graphene materials and therefore affect the sensing
Enrico Gerace et al.
Forensic science international, 243, 68-73 (2014-05-23)
The distribution of mephedrone in the body fluids and tissues of a subject found dead after the concomitant intake of cocaine and mephedrone is reported. Mephedrone (4-methylmethcathinone) is a designer drug of the phenethylamine family that is able to cause
Ziqing Qian et al.
Biochemistry, 53(24), 4034-4046 (2014-06-05)
Cyclic heptapeptide cyclo(FΦRRRRQ) (cFΦR4, where Φ is l-2-naphthylalanine) was recently found to be efficiently internalized by mammalian cells. In this study, its mechanism of internalization was investigated by perturbing various endocytic events through the introduction of pharmacologic agents and genetic
Jakub Vysloužil et al.
Acta pharmaceutica (Zagreb, Croatia), 64(4), 403-417 (2014-12-23)
The main objective of this study was to evaluate the influence of the formulation and process parameters on PLGA microparticles containing a practically insoluble model drug (ibuprofen) prepared by the o/w solvent evaporation method. Multivariate data analysis was used. The
Maria Addolorata Saracino et al.
Journal of pharmaceutical and biomedical analysis, 104, 122-129 (2014-12-17)
A new microextraction by packed sorbent (MEPS) procedure coupled to a high-performance liquid chromatographic method has been developed for quantitation of catecholamines (i.e. norepinephrine, epinephrine and dopamine) in innovative biological samples, namely dried plasma and urine spots. Analyses were carried
Partha Pratim Saha et al.
Indian journal of experimental biology, 52(8), 763-772 (2014-08-22)
Nanoscience and Nanotechnology have found their way in the fields of pharmacology and medicine. The conjugation of drug to nanoparticles combines the properties of both. In this study, gold nanoparticle (GNP) was conjugated with NKCT1, a cytotoxic protein toxin from
Miaomiao Jiang et al.
BMC complementary and alternative medicine, 14, 350-350 (2014-09-25)
Metabonomics is a useful tool for studying mechanisms of drug treatment using systematic metabolite profiles. Ginsenosides Rg1 and Rb1, ophiopogonin D, and schizandrin are the main bioactive components of a traditional Chinese formula (Sheng-Mai San) widely used for the treatment
Chieh-Jui Tsou et al.
Nanoscale, 7(9), 4217-4225 (2015-02-13)
Continuous and simultaneous 3D single-particle movement and local pH detection in HeLa cells were demonstrated for the first time by combining fluorescent mesoporous silica nanoparticles (FMSNs) and a single-particle tracking (SPT) technique with a precision of ∼10 nm. FMSNs, synthesized
Eric L Kendall et al.
Biomicrofluidics, 8(4), 044109-044109 (2014-11-08)
A technique for microfluidic, pH modulated DNA capture and purification using chitosan functionalized glycidyl methacrylate monoliths is presented. Highly porous polymer monoliths are formed and subsequently functionalized off-chip in a batch process before insertion into thermoplastic microchannels prior to solvent
Xiaonan Sui et al.
Food chemistry, 163, 163-170 (2014-06-11)
The stability of two cyanidin-based anthocyanins from black rice in an aqueous system containing them with a pH range of 2.2-6.0 was investigated at temperatures ranging from 100 to 165°C. Within these pH and temperature ranges, the stability of the
Smita Joel et al.
ACS chemical biology, 9(7), 1595-1602 (2014-05-21)
Advancements in biotechnology have allowed for the preparation of designer proteins with a wide spectrum of unprecedented chemical and physical properties. A variety of chemical and genetic methods can be employed to tailor the protein's properties, including its stability and
G Astrid Garzón et al.
Journal of agricultural and food chemistry, 63(6), 1803-1811 (2015-02-11)
The contents and profile of polyphenols were analyzed in edible petals of nasturtium flowers (Tropaeolum majus) of three colors, and their oxygen radical absorbance capacities (ORAC) were compared. Three primary anthocyanins (ACNs) and 15 non-ACN phenolic compounds including hydroxycinammic acids
Susana Sadler Simões et al.
Forensic science international, 243, 117-125 (2014-08-16)
An UPLC-MS/MS method using ESI+ionization and MRM was developed and fully validated according to international guidelines for the qualitative and quantitative analysis of nine synthetic cannabinoids and/or their metabolites in urine samples (1mL). Prior to extraction the samples were subjected
Haider A J Al Lawati et al.
Luminescence : the journal of biological and chemical luminescence, 29(8), 1148-1153 (2014-05-02)
A highly sensitive, rapid and economical method for the determination of amlodipine (AM) in biological fluids was developed using a peroxyoxalate chemiluminescence (CL) system in a lab-on-a-chip device. Peroxyoxalate-CL is an indirect type of CL that allows the detection of
Barrett Rabinow et al.
Inflammation, 38(1), 40-60 (2014-09-06)
Current therapeutic treatment options for osteoarthritis entail significant safety concerns. A novel ropivacaine crystalline microsuspension for bolus intra-articular (IA) delivery was thus developed and studied in a peptidoglycan polysaccharide (PGPS)-induced ankle swelling rat model. Compared with celecoxib controls, both oral
Xiaoning Li et al.
Bioconjugate chemistry, 26(3), 520-528 (2015-02-26)
Subcutaneous delivery is one of the preferred administration routes for therapeutic monoclonal antibodies (mAbs). High antibody dosing requirements and small injection volumes necessitate formulation and delivery of highly concentrated mAb solutions. Such elevated antibody concentrations can lead to undesirable solution
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