Search for dissertations about: "LC MS MS"

Showing result 21 - 25 of 243 swedish dissertations containing the words LC MS MS.

  2. 21. The Impact of Drugs of Abuse on the Neuroproteome : Application of Immunoblotting and LC-MS-based Proteomics

    Author : Uwe Rossbach; Pierre Le Grevès; Fred Nyberg; Matthias Hallberg; Jan Kehr; Uppsala universitet; []
    Keywords : ;

    Abstract : Qualitative and quantitative analysis of proteins can be based either on immunological or on mass spectrometry-utilizing methods. In this thesis, different approaches of protein analysis were applied to elucidate the impact of drugs of abuse on the rat brain. Androgens have been reported to affect mood, anxiety and memory function. READ MORE

  4. 22. Introducing weak affinity chromatography to drug discovery with focus on fragment screening

    Author : Minh-Dao Duong-Thi; Sten Ohlson; Brian Dymock; Linnéuniversitetet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; affinity LC-MS; fragment-based drug discovery; fragment screening; high throughput; mass spectrometry; stereoisomer; enantiomer; thrombin; weak affinity chromatography; WAC; WAC-MS.; Biomedical Sciences; Biomedicinsk vetenskap; Biokemi; Biochemistry;

    Abstract : Fragment-based drug discovery is an emerging process that has gained popularity in recent years. The process starts from small molecules called fragments. One major step in fragment-based drug discovery is fragment screening, which is a strategy to screen libraries of small molecules to find hits. READ MORE

  5. 23. Application of new technology : MEPS and LC-MS/MS for determination of therapeutic drugs

    Author : Rana Said; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Bioanalysis most often requires an extraction procedure to isolate the target compounds from a complex matrix. The aim of this work was to evaluate microextraction in packed syringe (MEPS) performance as a sample preparation technique by developing new analytical methods for different categories of compounds utilizing MEPS in combination with LC-MS/MS. READ MORE

  6. 24. Methods for structural studies of an antibody, screening metabolites in rat urine and analysis of spent cell cultivation media using LC/ESI-MS and chemometrics

    Author : Leila Zamani; Sven P. Jacobsson; Jonas Bergqvist; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Screening; Fingerprinting; metabolomics; Protein drugs; Mammalian Cell lines; LC ESI-MS; chemometrics; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : This thesis describes bioanalytical methods for generating fingerprints of biological systems for extracting relevant information with (protein) drugs in focus. Similarities and differences between samples can reveal the hidden relevant information, which can be used to optimize the production and facilitate the quality control of such protein drugs during their development and manufacture. READ MORE

  7. 25. Mass Spectrometry of Biologically Active Small Molecules : Focusing on polyphenols, alkaloids and amino acids

    Author : Zdeněk Spáčil; Leopold L. Ilag; Frantisek Turecek; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LC-MS; LDI; Mass spectrometry; HPLC; UHPLC; polyphenols; phenolic acids; BMAA; Separation methods; Separationsmetoder; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : The foci of this dissertation are on advanced liquid chromatography (LC) separation and mass spectrometry (MS) techniques for the analysis of small bioactive molecules. In addition to discussing general aspects of such techniques the results from analyses of polyphenols (PPs), alkaloids and amino acids published in five appended studies are presented and discussed. READ MORE