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Steven A Zdravkovic
Journal of pharmaceutical and biomedical analysis, 112, 126-138 (2015-05-16)
An extractable survey is one of several studies performed on a pharmaceutical storage/delivery system as part of the process of demonstrating that the system is suitable for its intended use. In this paper, a solid phase extraction method for the
Zhicheng Jin et al.
The Journal of biological chemistry, 290(30), 18671-18677 (2015-06-14)
We investigated the compartmentation of the catabolism of dodecanedioate (DODA), azelate, and glutarate in perfused rat livers, using a combination of metabolomics and mass isotopomer analyses. Livers were perfused with recirculating or nonrecirculating buffer containing one fully (13)C-labeled dicarboxylate. Information
Enkhtuul Tsogtbaatar et al.
Journal of experimental botany, 66(14), 4267-4277 (2015-02-26)
Pennycress (Thlaspi arvense L.), a plant naturalized to North America, accumulates high levels of erucic acid in its seeds, which makes it a promising biodiesel and industrial crop. The main carbon sinks in pennycress embryos were found to be proteins
Haisong Wang et al.
Carbohydrate polymers, 121, 355-361 (2015-02-11)
Poly-mannose with molecular weight of 2.457 kDa was synthesized using d-mannose as substrate and phosphoric acid as catalyst under the condition of microwave irradiation for the first time. The optimum reaction conditions were microwave output power of 900 W, temperature
Birgit Scholz et al.
Journal of chromatography. A, 1396, 98-108 (2015-04-22)
A novel methodology for the automated qualitative and quantitative determination of phytosterol oxidation products in enriched foods via on-line liquid chromatography-gas chromatography (LC-GC) was established. The approach is based on the LC pre-separation of acetylated phytosterols and their corresponding oxides
Silke Matysik et al.
Steroids, 99(Pt B), 151-154 (2015-02-07)
A fast and sensitive GC-MS/MS method is proposed to determine pregnenolone, dehydroepiandrosterone (DHEA), testosterone and dihydrotestosterone from human plasma. Steroids were extracted by liquid/liquid extraction, and derivatized with N-methyl-N-trimethylsilyl-trifluoracetamide. Electron ionization at 30eV was applied to generate high abundant precursor
Yu Huang et al.
Bioresource technology, 181, 224-230 (2015-02-07)
In this study, steam explosion pretreatment was performed in cotton stalks, leading to 5-6 folds enhancements on biomass enzymatic saccharification distinctive in Gossypium barbadense and Gossypium hirsutum species. Sequential 1% H2SO4 pretreatment could further increase biomass digestibility of the steam-exploded
Bradford A Paik et al.
Soft matter, 11(9), 1839-1850 (2015-01-23)
Polymer-peptide conjugates were produced via the copper-catalyzed azide-alkyne cycloaddition of poly(tert-butyl acrylate) (PtBA) and elastin-like peptides. An azide-functionalized polymer was produced via atom transfer radical polymerization (ATRP) followed by conversion of bromine end groups to azide groups. Subsequent reaction of
Guozhi Fan et al.
Carbohydrate polymers, 94(1), 71-76 (2013-04-03)
Cellulose was isolated from rice straw by pretreatment with dilute alkaline and acid solutions successively, and it was further transferred into cellulose acetate in the presence of acetic anhydride and phosphotungstic acid (H3PW12O40·6H2O). The removal of hemicellulose and lignin was
Simon T Schafer et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 35(12), 4983-4998 (2015-03-27)
In the mammalian hippocampus, canonical Wnt signals provided by the microenvironment regulate the differentiation of adult neural stem cells (NSCs) toward the neuronal lineage. Wnts are part of a complex and diverse set of signaling pathways and the role of
Min Kyung Kong et al.
Journal of biotechnology, 214, 95-102 (2015-09-24)
The ent-kaurene is a dedicated precursor pool and is responsible for synthesizing natural sweeteners such as steviol glycosides. In this study, to produce ent-kaurene in Escherichia coli, we modularly constructed and expressed two ent-kaurene genes encoding ent-copalyl diphosphate synthase (CPPS)
Bin Huang et al.
Environmental science and pollution research international, 21(22), 12898-12908 (2014-07-01)
The occurrence and behavior of endocrine disrupting chemicals (EDCs) in sewage treatment plants (STPs), especially estrogens and phenols, have been closely concerned in previous studies. However, the systematical researches about progestogens and androgens were scarce in STPs adopting different treatment
Thomas B Kakule et al.
Journal of the American Chemical Society, 136(51), 17882-17890 (2014-12-02)
The programming of the fungal polyketide synthase (PKS) is quite complex, with a simple domain architecture leading to elaborate products. An additional level of complexity has been found within PKS-based pathways where the PKS is fused to a single module
Dong Ho Suh et al.
Journal of agricultural and food chemistry, 62(34), 8764-8771 (2014-08-08)
Metabolite profiling of red and white pitayas (Hylocereus polyrhizus and Hylocereus undatus) was performed using gas chromatography-time-of-flight-mass spectrometry and ultraperformance liquid chromatography-quadrupole-time-of-flight-mass spectrometry with multivariate analysis. Different species and parts of pitayas (red peel, RP; white peel, WP; red flesh
Tanja C W Moerdijk-Poortvliet et al.
Rapid communications in mass spectrometry : RCM, 29(13), 1205-1214 (2015-09-24)
We compared gas chromatography/isotope ratio mass spectrometry (GC/IRMS) and liquid chromatography/isotope ratio mass spectrometry (LC/IRMS) for the measurement of δ(13)C values in carbohydrates. Contrary to GC/IRMS, no derivatisation is needed for LC/IRMS analysis of carbohydrates. Hence, although LC/IRMS is expected
Zengyan Wei et al.
Nature communications, 5, 3870-3870 (2014-05-16)
The shape-controlled synthesis of nanoparticles was established in single-phase solutions by controlling growth directions of crystalline facets on seed nanocrystals kinetically; however, it was difficult to rationally predict and design nanoparticle shapes. Here we introduce a methodology to fabricate nanoparticles
Ewa Moczko et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1124, 1-6 (2019-06-09)
Herein an approach to prepare molecularly imprinted polymer nanoparticles (nanoMIPs) with specific binding affinity for antibodies is reported. The process relied on the covalent immobilization of the template (whole immunoglobulin G (IgG), Fc domain of human IgG and peptide epitope)
Jill K Winkler-Moser et al.
Food chemistry, 169, 92-101 (2014-09-23)
Steryl ferulates synthesised from commercial sterols as well as commercial oryzanol were used to better understand how structural features affect antioxidant activity in vitro by the ABTS(+) radical decolorization assay, by oxidative stability index (OSI) of soybean oil, and by
Mingwu Shen et al.
Nanotechnology, 23(10), 105601-105601 (2012-02-22)
We report a facile approach to synthesizing 3-aminopropyltrimethoxysilane (APTS)-coated magnetic iron oxide (Fe(3)O(4)@APTS) nanoparticles (NPs) with tunable surface functional groups for potential biomedical applications. The Fe(3)O(4) NPs with a mean diameter of 6.5 nm were synthesized by a hydrothermal route in
Estrid Hein et al.
Molecular immunology, 63(2), 209-214 (2014-07-30)
The complement system plays a pathophysiological role in systemic lupus erythematosus (SLE). This study aims to investigate whether an association exists between the ficolins that are part of the lectin complement pathway and SLE. EDTA plasma samples from 68 Danish
Moonhee Lee et al.
Neurobiology of aging, 36(10), 2748-2756 (2015-08-08)
We here report synthesis for the first time of the acetyl salicylic acid dimer 5,5'-methylenebis(2-acetoxybenzoic acid) (DAS). DAS inhibits aberrant complement activation by selectively blocking factor D of the alternative complement pathway and C9 of the membrane attack complex. We
Geert Janssens et al.
Journal of agricultural and food chemistry, 63(34), 7574-7581 (2015-08-15)
The administration of synthetic homologues of naturally occurring steroids can be demonstrated by measuring (13)C/(12)C isotopic ratios of their urinary metabolites. Gas chromatography-mass spectrometry/combustion/isotope ratio mass spectrometry (GC-MS/C/IRMS) was used in this study to appraise in a global approach isotopic
Xueyan Zheng et al.
Carbohydrate polymers, 111, 25-32 (2014-07-20)
Tetraalkylammonium hydroxides have been found to mediate regioselective deacylation of cellulose esters. This deacylation surprisingly shows substantial selectivity for the removal of the acyl groups at O-2/3, affording cellulose-6-O-esters by a simple, efficient one-step process. The mechanism for this deacylation
Eagleson M.
Concise Encyclopedia Chemistry, 5-5 (1994)
Michael W George et al.
Proceedings of the National Academy of Sciences of the United States of America, 107(47), 20178-20183 (2010-11-05)
Fast time-resolved infrared spectroscopic measurements have allowed precise determination of the rates of activation of alkanes by Cp'Rh(CO) (Cp(') = η(5)-C(5)H(5) or η(5)-C(5)Me(5)). We have monitored the kinetics of C─H activation in solution at room temperature and determined how the change in
Shi-Kang Zhai et al.
Journal of immunology (Baltimore, Md. : 1950), 193(12), 5951-5959 (2014-11-12)
Microbial and host cell interactions stimulate rabbit B cells to diversify the primary Ab repertoire in GALT. B cells at the base of appendix follicles begin proliferating and diversifying their V-(D)-J genes around 1 wk of age, ∼5 d after
Yu-bin Su et al.
Journal of proteome research, 14(3), 1612-1620 (2015-02-13)
Edwardsiella tarda, the causative agent of Edwardsiellosis, imposes medical challenges in both the clinic and aquaculture. The emergence of multidrug resistant strains makes antibiotic treatment impractical. The identification of molecules that facilitate or promote antibiotic efficacy is in high demand.
Yiannis S Angelis et al.
Drug testing and analysis, 4(12), 923-927 (2012-03-01)
In gas chromatographic-combustion-isotope ratio mass spectrometry (GC-C-IRMS) doping control analysis, endogenous androgenic anabolic steroids and their metabolites are commonly acetylated using acetic anhydride reagent, thus incorporating exogenous carbon that contributes to the measured isotope ratio. Comparison of the endogenous δ(13)C
Juan Ignacio Cacho et al.
Talanta, 146, 568-574 (2015-12-24)
A new procedure for the introduction of ionic liquid samples in gas chromatography (GC) is proposed. This procedure, based on microvial insert thermal desorption, allows the direct analysis of the compounds preconcentrated by ionic liquid based liquid-liquid microextraction (IL-LLME) using
Jannette Gavillán-Suárez et al.
BMC complementary and alternative medicine, 15, 244-244 (2015-07-23)
The increasing numbers of people who use plant-based remedies as alternative or complementary medicine call for the validation of less known herbal formulations used to treat their ailments. Since Puerto Rico has the highest rate of Type 2 diabetes within
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