Sökning: "High performance liquidchromatography"

Hittade 3 avhandlingar innehållade orden High performance liquidchromatography.

  1. 1. Studies on the level of substance P and calcitonin gene-related peptide in cerebrospinal fluid of pregnant women and patients with chronic pain and in rat brain after spinal cord injury : Special reference to analytical aspects of neuropeptides

    Författare :Zhurong Liu; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; Substance P; Calcitonin gene-related peptide; Radioimmunoassay; High performance liquidchromatography; Cerebrospinal fluid and chronic pain; Farmaceutisk biovetenskap; Biopharmacy; Biofarmaci; Pharmacognosy; farmakognosi;

    Sammanfattning : Substance P (SP) and calcitonin gene-related peptide (CGRP) are sensory peptides known to be involved innociception and inflammatory processes. It is well demonstrated that the two peptides can be released from spinal cord neurons during inflammation and chronic pain induced by peripheral nerve injury. LÄS MER

  3. 2. Elimination of caffeine metabolites in man

    Författare :Nikolaos Rodopoulos; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :C8-oxidation capillary elearophoresis dimethylxanthines high-performance liquidchromatography liver cirrhosis N-acetylation N-demethylation monomethylurates monomethylxanthines;

    Sammanfattning : Plasma, saliva and urinary caffeine (CA), paraxanthine (PX), theobromine (TB), theophylline (TP) and their metabolites were, after separation into fractions by reversed-phase high-performance liquid chromatography (HPLC), quantitated by capillary electrophoresis (CE). In healthy adults, 96% of the total amount of excreted compounds derived from CA were dimethylxanthines (DMXs) and metabolites, the remainder 4% being nonmetabolized CA and its non-demethylated urate. LÄS MER

  4. 3. Consumption and loss of commercial stabilisers in polyethylene exposed to different natural environments

    Författare :Nadejzda Haider; KTH; []
    Nyckelord :LDPE; MDPE; ultrasonic extraction; polymer additives; stabilisers; antioxidants; HALS; Irganox 1010; Irgafos 168; migration; consumption; GC-MS; additive degradation products;

    Sammanfattning : A procedure for the extraction and analysis of commercialstabilisers in low density and medium density polyethylene(LDPE and MDPE) films was developed and used to study theconsumption of stabilisers in polymers exposed to differentnatural environments. An ultrasonic technique was applied toextract HALS-3 (Chimassorb 944) from LDPE film and antioxidants(Irganox 1010 and Irgafos 168) from MDPE film. LÄS MER