Showing 1,101 - 1,120 results of 1,443 for search '"mass spectrometry"', query time: 0.12s Refine Results
  1. 1101

    The transport of polyphenols from Camellia fascicularis in Caco-2 cells based on UPLC-ESI-MS/MS by Shengjiang Duan, Hao Zheng, Junrong Tang, Huan Kan, Changwei Cao, Zhijiao Shi, Yun Liu

    Published 2025-01-01
    “…Herein, digestion samples (DS) of C. fascicularis polyphenols (CFPs) were metabolically analyzed based on their bidirectional translocation in Caco-2 cells using ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry. The results indicated that after DS transported via Caco-2 cell monolayer models nine polyphenol compounds in transit solution (TSB) from apical (AP) to basolateral (BL) side were upregulated, whereas seven in the transit solution (TSA) from BL to AP side were upregulated. …”
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  2. 1102

    Interaction of human neutrophils with Trichomonas vaginalis protozoan highlights lactoferrin secretion by Wei-Hung Cheng, Ruei-Min Chen, Seow-Chin Ong, Yuan-Ming Yeh, Po-Jung Huang, Chi-Ching Lee

    Published 2025-02-01
    “…We conducted a comprehensive profiling of soluble excretory/secretory proteins (ESPs), identifying 192 protein spots, of which 94 were successfully characterized through mass spectrometry analysis. Notably, the majority of induced ESPs from co-cultivation exhibited consistency with the trichomonad and neutrophil standalone groups, except for lactoferrin, which was observed exclusively following the interaction between neutrophils and T. vaginalis. …”
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  3. 1103

    A new portable sampler of atmospheric methane for radiocarbon measurements by G. Zazzeri, G. Zazzeri, L. Wacker, N. Haghipour, P. Gautschi, T. Laemmel, T. Laemmel, S. Szidat, S. Szidat, H. Graven

    Published 2025-01-01
    “…In this study, we address this challenge by advancing the system in Zazzeri et al. (2021) into a much more compact and portable sampler and by coupling the sampler with the MICADAS (MIni CArbon DAting System) accelerator mass spectrometry (AMS) system at ETH Zurich, using a gas interface.…”
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  4. 1104

    Two Cysteines in Raf Kinase Inhibitor Protein Make Differential Contributions to Structural Dynamics In Vitro by Hyun Sang Cho, Mohammad Faysal Al Mazid, Eun-Young Lee, Md Abu Rayhan, Hyoun Sook Kim, Byung Il Lee, Hye Jin You

    Published 2025-01-01
    “…Mutation of alanine or serine instead of cysteine in RKIP proteins did not affect the biochemical characteristics, while dynamic light scattering and liquid chromatography (LC) quadrupole time-of-flight (Q-TOF) mass spectrometry (MS) suggested distinct peaks in solution, which were identified via LC–MS/MS analyses, and further clarified the role of cysteine in RKIP dimerization. rhRKIP dimer formation was abrogated by a 32-aa peptide mimicking the region between two RKIP proteins for dimerization. …”
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  5. 1105
  6. 1106

    Tracing the Origin of Oxide Inclusions in Vacuum Arc Remelted Steel Ingots Using Trace Element Profiles and Strontium Isotope Ratios by Christoph Walkner, Gulnaz Mukhametzianova, Stefan Wagner, Jörg C. Korp, Andreas Graf, Johanna Irrgeher, Thomas C. Meisel, Thomas Prohaska

    Published 2025-01-01
    “…In this study, the potential of elemental and isotopic fingerprinting to trace the sources of macroscopic oxide NMIs found in VAR-treated steel ingots using SEM-EDX, inductively coupled plasma mass spectrometry (ICP-MS), laser ablation ICP-MS (LA-ICP-MS), and laser ablation multicollector ICP-MS (LA-MC-ICP-MS) were exploited. …”
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  7. 1107

    Seasonal Changes in the Elemental Composition of Five Valuable Fish Species (<i>Sparidae</i>) from Bozcaada, North Aegean Sea: A Health Risk and Nutritional Benefit Assessment by İlknur Yuvka, Ali Rıza Kosker, Mustafa Durmus, Yılmaz Ucar, Yesim Ozogul

    Published 2025-01-01
    “…The concentrations of elements such as calcium, potassium, magnesium, phosphorus, copper, iron, manganese, zinc, chromium, nickel, selenium, cadmium, and mercury were analyzed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The elemental concentrations varied as follows: Ca (11,388.46–55,470.76), K (17,230.83–27,594.86), Mg (1436.02–2326.73), Na (1962.30–7847.41), P (13,112.11–15,516.57), Fe (107.61–282.00), Cu (36.44–59.13), Mn (6.19–19.87), Zn (98.67–256.26), Cr (4.54–11.96), Ni (6.33–13.89), Se (0.82–7.33), Cd (0.08–0.32), and Hg (0.08–1.50) mg/kg. …”
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  8. 1108

    Predictive value of bile acids as metabolite biomarkers for gallstone disease: A systematic review and meta-analysis. by Xu Han, Juan Wang, Yingnan Wu, Hao Gu, Ning Zhao, Xing Liao, Miao Jiang

    Published 2024-01-01
    “…The level of serum DCA in the GSD patients was found to be increased by using chromatography, yet decreased by chromatography mass spectrometry.<h4>Conclusion</h4>The profiles of BAs demonstrated distinctive changes in GSD patients compared with healthy control subjects. …”
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  9. 1109
  10. 1110

    The concentration of selected organophosphorus pesticides associated with PM10 in agricultural ambient air in Iran: Health risk assessment using Monte Carlo simulation by Asma Tabanasl, Amin Mohammadpour, Aboozar Soltani, Mohammad Hoseini, Mohammadali Baghapour

    Published 2025-01-01
    “…Active sampling was conducted using a SKC pump with a selective air inlet, and the samples were analyzed via liquid chromatography-mass spectrometry. The results indicated that Diazinon exhibited the highest average concentration among PM10-bound organophosphate pesticides, measuring 4.23 ng/m³ in suburban areas and 2.51 ng/m³ in urban environments. …”
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  11. 1111

    Betaxanthin Profiling in Beta vulgaris Leaves and Gymnocalycium mihanovichii Grafted Cacti: A Comprehensive Study by Aneta Spórna-Kucab, Anna Tekieli, Magdalena Knapek, Marta Zużałek, Sławomir Wybraniec

    Published 2023-12-01
    “…This study was focused on the identification and quantification of betaxanthins using high-performance liquid chromatography with a diode array detector coupled to electrospray ionisation mass spectrometry (HPLC-DAD-ESI-MS) in leaves of various cultivars of Beta vulgaris (beet) and Gymnocalycium mihanovichi i grafted cacti. …”
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  12. 1112

    Comparative analysis of phytonutrients of Moringa oleifera leaves from South Africa and Nigeria, and their antimicrobial and antioxidant potentials by UPLC-ESI-QToF-MS and OPLS-DA... by Jonathan Kayembe, Cosa Sekelwa, Kokoette Bassey

    Published 2025-01-01
    “…This study aimed to conduct a comparative analysis of the phytonutrients (nutrients protectors) or supplements, antioxidant, and antimicrobial potentials of M. oleifera leaves from Nigeria and South Africa to benchmark quality control protocols for commercial beverages such as Moringa porridge.MethodsStandard techniques, including high-performance liquid chromatography-photodiode array and ultra-high-performance liquid chromatography electrospray ionization quadruple time-of-flight mass spectrometry (UPLC-ESI-QToF-MS) and chemometrics orthogonal partial least square discriminant analysis (OPLS-DA) were employed for phytoconstituents fingerprinting. …”
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  13. 1113

    Differences in central dopamine, but not serotonin, activity and welfare associated with age but not with preening cup use in commercial grow-out Pekin duck barns by M.M. Bergman, J.M. Schober, R. Novak, A. Grief, C. Plue, D. Frey, H. Parnin, G.S. Fraley

    Published 2025-01-01
    “…To evaluate the ducks’ affective state, we combined measuring welfare by walking a transect in the barn with mass spectrometry and qRT-PCR to measure brain neurotransmitter levels and gene expression for serotonin (5-HT) and dopamine (DA) synthesis and metabolism. 5-HT and DA have been established as indicators of mental state and emotions. …”
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  14. 1114

    Antibiotic exposure is associated with minimal gut microbiome perturbations in healthy term infants by Alain J. Benitez, Ceylan Tanes, Elliot S. Friedman, Joseph P. Zackular, Eileen Ford, Jeffrey S. Gerber, Patricia A. DeRusso, Andrea Kelly, Hongzhe Li, Michal A. Elovitz, Gary D. Wu, Babette Zemel, Kyle Bittinger

    Published 2025-01-01
    “…Here, we use a prospective longitudinal birth cohort of n = 323 healthy term African American children to determine the association between antibiotic exposure and the gut microbiome through shotgun metagenomics sequencing as well as bile acid profiles through liquid chromatography-mass spectrometry. Results Stool samples were collected at ages 4, 12, and 24 months for antibiotic-exposed (n = 170) and unexposed (n = 153) participants. …”
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  15. 1115

    Differential GTP-dependent in-vitro polymerization of recombinant Physcomitrella FtsZ proteins by Stella W. L. Milferstaedt, Marie Joest, Lennard L. Bohlender, Sebastian N. W. Hoernstein, Buğra Özdemir, Eva L. Decker, Chris van der Does, Ralf Reski

    Published 2025-01-01
    “…Here, we investigated the interaction of Physcomitrella FtsZ2-1 with FtsZ1 isoforms via co-immunoprecipitation and mass spectrometry, and found protein-protein interaction in vivo. …”
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  16. 1116

    Phenotypic plasticity vs. local genetic adaptation: essential oil diversity of natural immortelle (Helichrysum italicum (Roth.) G.Don) populations along eastern Adriatic coast by Tonka Ninčević Runjić, Dejan Pljevljakušić, Marko Runjić, Martina Grdiša, Martina Grdiša, Zlatko Šatović, Zlatko Šatović

    Published 2025-02-01
    “…Eighteen natural immortelle populations were sampled, hydrodistilled and their essential oil composition determined by gas chromatography-mass spectrometry. A total of 84 compounds were identified. …”
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  17. 1117

    Influence of Hydrodistillation Conditions on Yield and Composition of Coriander (Coriandrum sativum L.) Essential Oil by Huzar Elżbieta, Dzięcioł Małgorzata, Wodnicka Alicja, Örün Harun, İçöz Arda, Çiçek Erkan

    Published 2018-09-01
    “…The composition of the coriander essential oil was determined by using gas chromatography with mass spectrometry (GC-MS). The main components were linalool (78.45%), α-pinene (5.03%), camphor (3.90%), γ-terpinene (3.80%), D-limonene (2.58%) and geranyl acetate (2.13%). …”
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  18. 1118

    Hyperandrogenism, Elevated 17-Hydroxyprogesterone and Its Urinary Metabolites in a Young Woman with Ovarian Steroid Cell Tumor, Not Otherwise Specified: Case Report and Review of t... by Felix C. K. Wong, Angela Z. Chan, W. S. Wong, Angel H. W. Kwan, Tracy S. M. Law, Jacqueline P. W. Chung, Jeffrey S. S. Kwok, Angel O. K. Chan

    Published 2019-01-01
    “…While a diagnosis of polycystic ovary syndrome (PCOS) with its associated metabolic disturbances was initially considered, serum total testosterone, androstenedione, and 17-hydroxyprogesterone (17-OHP) measured by liquid chromatography tandem mass spectrometry (LC-MS/MS) were significantly increased. …”
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  19. 1119

    The effect of trace minerals on the stability of retinol acetate, cholecalciferol and selenomethionine stability within premixes by M. Concarr, I. Sinkunaite, R. Murphy

    Published 2021-05-01
    “…The SeMet content of the two SeMet-trace mineral premixes was analysed after 49 days in storage by high performance liquid chromatography – inductively coupled plasma mass spectrometry and the amount of SeMet present within each of the samples was compared to the quantity determined prior to storage. …”
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  20. 1120

    Subchronic Exposure to Low-Dose Chlorfenapyr and Emamectin Benzoate Disrupts Kidney Metabolism in Rats by Di Zhang, Xiao-Hua Song, Dan Yang, Mu-Zi Ge, Jun Qiu, Han-Qing Jiang, Yan-Yan Sun, Xiang-dong Li, Yi-Jun Wu

    Published 2025-01-01
    “…Kidney metabolome alterations were analyzed by using gas chromatography–mass spectrometry. The results showed that combined exposure to CFP and EMB elevated BUN levels and induced pathological damage, which presented as thinner renal tubular epithelial cells, an abnormal glomerular morphology, and an increased fibrotic area. …”
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