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Lionel Vidaud et al.
International journal of pharmaceutics, 437(1-2), 137-155 (2012-08-15)
In the context of the Quantitative Structure-Activity Relationship (QSAR) for new drugs, knowledge and understanding of the behavior of the molecules in solution and simulated media are key points to provide the best formulated compounds. Current analytical determinations can give
Yousef Abdossalami Asl et al.
Journal of chromatography. A, 1419, 10-18 (2015-10-13)
In the present research, dynamic electromembrane extraction (DEME) was introduced for the first time for extraction and determination of ionizable species from different biological matrices. The setup proposed for DEME provides an efficient, stable, and reproducible method to increase extraction
Moran Zur et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 61, 11-17 (2013-11-23)
While the solubility parameter is fairly straightforward when assigning BCS classification, the intestinal permeability (Peff) is more complex than generally recognized. In this paper we emphasize this complexity through the analysis of codeine, a commonly used antitussive/analgesic drug. Codeine was
Junling Li et al.
Nuclear medicine and biology, 42(3), 283-291 (2014-12-30)
Bis(Zn-dipicolylamine (Zn-DPA)) coordination complexes represent a new class of synthetic small molecules that can target anionic phosphatidylserine (PS) in the apoptotic cells with high affinity and specificity. In this study, we labeled Zn-DPA and Cy7-Zn-DPA with different (18)F-prosthetic groups and
Cheng Zhang et al.
Journal of chromatography. A, 1344, 15-22 (2014-04-29)
Novel cross-linked polymeric ionic liquid (PIL) bucky gels were formed by free-radical polymerization of polymerizable ionic liquids gelled with multi-walled carbon nanotubes (MWCNT) and used as sorbent coatings for solid-phase microextraction (SPME). The combination of PIL with MWCNTs significantly enhanced
María Ramos-Payán et al.
Analytica chimica acta, 849, 7-11 (2014-10-11)
A novel approach based on the use of nanometallic-decorated hollow fibers to assist electromembrane extraction is proposed. Microporous polypropylene hollow fibers, on which nanometallic silver was deposited, have been used for the first time as liquid membrane support in electromembrane
Cristina Román Hidalgo et al.
Analytical and bioanalytical chemistry, 407(5), 1519-1525 (2014-12-19)
A new support containing silver nanoparticles to assist electromembrane extraction (EME) procedures is proposed. For the first time, synthesized agar films containing silver nanoparticles (AgNPs) have been used as a support for liquid membranes in EME. Agarose films of 20 μm
M Thelestam et al.
Toxicology, 15(3), 203-217 (1980-01-01)
The ability of compounds derived from tobacco and tobacco smoke to increase the permeability of the membranes of human lung fibroblasts has been studied by measuring the release of an intracellular marker after short term exposure. Of the 464 compounds
H Fujioka et al.
Kaku igaku. The Japanese journal of nuclear medicine, 36(8), 801-807 (1999-12-10)
The present study was designed to investigate a possibility of substitution of the venous blood radioactivity counts sampled 26 min post injection for the octanol-extracted arterial blood radioactivity counts obtained at 5 min after the injection of N-isopropyl-p-[123I]iodoamphetamine (123I-IMP). Furthermore
Roy Bogseth et al.
Journal of the American Society for Mass Spectrometry, 25(11), 1987-1990 (2014-09-25)
Simple alcohols formed protonated acetonitrile adducts containing up to two acetonitrile molecules when analyzed by ESI or APCI in the presence of acetonitrile in the solvent. These acetonitrile adducts underwent dissociation to form a nitrilium ion, also referred to as
Alper Can et al.
Environmental toxicology and pharmacology, 35(3), 369-379 (2013-03-08)
Sulphonylurea and phenylurea herbicides are two groups of herbicides that are most commonly used worldwide. Quantitative structure-toxicity relationship models were derived for estimating the acute oral toxicity of these herbicides to male rats. The 20 chemicals of the training set
D Southwell et al.
The Journal of investigative dermatology, 80(6), 507-514 (1983-06-01)
Penetration-enhancing solvents may modify diffusional routes through the stratum corneum and the partitioning of drugs into these pathways. To investigate the mechanisms of action of enhancers, steady-state fluxes were measured in vitro for polar methanol, nonpolar octanol, and an intermediate
"Single drop microextraction?development, applications and future trends"
Jeannot.AM, et al.
Journal of Chromatography A, 1217(16), 2326-2336 (2010)
H Fujioka et al.
Nuclear medicine communications, 19(6), 561-566 (1999-05-11)
We have developed a new method to replace the conventional method of quantitatively measuring cerebral blood flow (CBF), in which octanol-extracted radioactivity counts are measured in continuous arterial blood samples. With the new method, the whole-brain time-activity curves early after
A B Dulbecco et al.
Journal of medical entomology, 52(6), 1254-1259 (2015-09-18)
The binding of deltamethrin (DLM) to the hemipteran Triatoma infestans (Klug) hemolymph lipoproteins was evaluated in vitro. After DLM incubation with the insect hemolymph, lipoproteins were fractioned by ultracentrifugation. DLM binding was analyzed by a microextractive technique-solvent bar microextraction-a solventless methodology
P Poulin et al.
Journal of pharmaceutical sciences, 90(4), 436-447 (2001-02-15)
Tissue:plasma (P(t:p)) partition coefficients (PCs) are important parameters describing tissue distribution of drugs. The ultimate goal in early drug discovery is to develop and validate in silico methods for predicting a priori the P(t:p) for each new drug candidate. In
Sergiane Souza Caldas et al.
Talanta, 146, 676-688 (2015-12-24)
A rapid and efficient sample pretreatment using solvent-based de-emulsification dispersive liquid-liquid microextraction (SD-DLLME) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was studied for the extraction of 58 pharmaceuticals and personal care products (PPCPs) and pesticides from water samples. Type and
Károly Mazák et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 47(5), 921-925 (2012-10-03)
Species-specific partition coefficients were determined for a triprotic molecule for the first time. Thyroxine, the vitally important thyroid hormone which exists in solution in the forms of eight microspecies due to its phenolate, amino and carboxylate basic sites, was studied
Yasmine A Gomaa et al.
International journal of pharmaceutics, 438(1-2), 140-149 (2012-09-11)
Drug flux across microneedle (MN)-treated skin is influenced by the characteristics of the MN array, formed microconduits and physicochemical properties of the drug molecules in addition to the overall diffusional resistance of microconduits and viable tissue. Relative implication of these
Pingxi Xu et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(46), 16592-16597 (2014-10-29)
Insect repellents are important prophylactic tools for travelers and populations living in endemic areas of malaria, dengue, encephalitis, and other vector-borne diseases. DEET (N,N-diethyl-3-methylbenzamide) is a 6-decade-old synthetic repellent, which is still considered the gold standard of mosquito repellents. Mosquitoes
K S Arias et al.
ChemSusChem, 6(1), 123-131 (2013-01-11)
The selective acetalization of 5-hydroxymethylfurfural (HMF) with long-chain alkyl alcohols has been performed to obtain precursors of molecules with surfactant properties. If direct acetalization of HMF with n-octanol is performed in the presence of strong acids (homogeneous and heterogeneous catalysts)
In-Hwan Baek et al.
Xenobiotica; the fate of foreign compounds in biological systems, 44(11), 975-987 (2014-05-31)
1. JHL45, a novel immune modulator against atopic dermatitis (AD), was synthesized from decursin isolated from Angelica gigas. The goal is to evaluate the lead compound using quantitative modeling approaches to novel anti-AD drug development. 2. We tested the anti-inflammatory effect of
Maya Emmons-Bell et al.
International journal of molecular sciences, 16(11), 27865-27896 (2015-11-28)
The shape of an animal body plan is constructed from protein components encoded by the genome. However, bioelectric networks composed of many cell types have their own intrinsic dynamics, and can drive distinct morphological outcomes during embryogenesis and regeneration. Planarian
Nunzio Denora et al.
International journal of pharmaceutics, 437(1-2), 221-231 (2012-09-04)
This study investigates the use of codrugs of the GABAergic agent 2-phenyl-imidazo[1,2-a]pyridinacetamide and dopamine (DA) or ethyl ester L-Dopa (LD) as a strategy to deliver DA and simultaneously activate GABA-receptors in the brain. For this purpose, both DA and LD
Nyi Nyi Naing et al.
Journal of chromatography. A, 1423, 1-8 (2015-11-05)
Electro membrane extraction-solid-liquid phase microextraction (EME-SLPME) was developed for the first time to determine phenolic contaminants in water. The extraction system consisted of a solid/liquid interface that permitted a three-phase microextraction approach involving an aqueous sample (donor phase): an organic
Patrícia da Fonseca et al.
Bioanalysis, 5(6), 721-730 (2013-03-15)
An enantioselective analytical method was developed and validated for determination of venlafaxine and its metabolites O-desmethylvenlafaxine and N-desmethylvenlafaxine in plasma samples. The method employed LC-MS/MS analysis and hollow-fiber liquid-phase microextraction (HF LPME) for sample preparation. After HF LPME optimization the
Zeqing Bai et al.
Analytica chimica acta, 767, 97-103 (2013-03-05)
Profile switching of two-phase flows is often required in microfluidic systems. Manipulation of flow profiles can be realized by control of local surface energy of micro channel through wettability-patterning of channel surface. This article presents a facile approach for wettability-patterning
Cristian Gobbo et al.
ACS nano, 6(12), 10684-10698 (2012-12-12)
Controlling the molecular conformation of oligomers on surfaces through noncovalent interactions symbolizes an important approach in the bottom-up patterning of surfaces with nanoscale precision. Here we report on the design, synthesis, and scanning tunneling microscopy (STM) investigation of linear oligoamides
Jun Zhou et al.
Journal of pharmaceutical and biomedical analysis, 94, 30-35 (2014-02-18)
A new and fast sample preparation technique based on two-phase hollow fiber liquid phase microextraction (HF-LPME) with magnetofluid was developed to quantitate and determine the four phenylethanoid glycosides (PhGs) (Echinacoside, Tubuloside B, Acteoside and Isoacteoside) in plasma after oral administration
Tracey N Bell et al.
ACS omega, 5(42), 27393-27400 (2020-11-03)
Information contained in the sequences of biological polymers such as DNA and protein is crucial to determining their function. Lipids are not generally thought of as information-containing molecules. However, from a supramolecular perspective, the number of possible combinations of lipids
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