Search for dissertations about: "in vitro release"

Showing result 1 - 5 of 489 swedish dissertations containing the words in vitro release.

  2. 1. On magnesium-modified titanium coatings and magnesium alloys for oral orthopaedic applications : in vitro investigation

    Author : Francesca Cecchinato; Malmö högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biocompatible material; Bone substitutes; Biomaterial; Dentala implantat;

    Abstract : In dentistry and orthopaedic surgery, research to find and developimproved biomaterials is progressing rapidly.Of specific interest is to accelerate bone formation around theimplant surface, which could improve the reliability of the implanteven in patients with compromised situations. READ MORE

  4. 2. Metal Particles – Hazard or Risk? Elaboration and Implementation of a Research Strategy from a Surface and Corrosion Perspective

    Author : Klara Midander; Inger Odnevall Wallinder; Sannakaisa Virtanen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ferro-chromium alloy; metal particles; bioaccessibility; chemical speciation; dermal contact; surface oxide; in-vitro testing; chemical speciation; cu; copper; comet assay; intracellular; ultrafine; in vitro; A549; cytotoxicity; DNA damage; nanoparticles; particle characterization; artificial sweat; nickel release; nickel powder particles; particle loadings; release kinetics; surface area; copper release; powder particles; synthetic body fluids; simulation of interstitial lung conditions; skin contact; metal release; stainless steel; particles; test method; Surface and colloid chemistry; Yt- och kolloidkemi; Analytical chemistry; Analytisk kemi; Spectroscopy; Spektroskopi;

    Abstract : Do metal particles (including particles of pure metals, alloys, metal oxides and compounds) pose a hazard or risk to human health? In the light of this question, this thesis summarizes results from research conducted on metal particles, and describes the elaboration and implementation of an in vitro test methodology to study metal release from particles through corrosion and dissolution processes in synthetic biological media relevant for human exposure through inhalation/ingestion and dermal contact. Bioaccessible metals are defined as the pool of released metals from particles that potentially could be made available for absorption by humans or other organisms. READ MORE

  5. 3. Mechanisms of muscarinic feedback regulation of acetylcholine release in rat hippocampus : an in vitro study

    Author : Öie Nordström; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The present study on dilute suspensions of synaptosomes from rat hippocampus yields evidence that feedback regulation of acetylcholine release in this preparation is exerted by a muscarinic autoreceptor localized on the cholinergic nerve ending itself.A possible model for the sequence of events which may take place at the cholinergic nerve ending is presented. READ MORE

  6. 4. The Role of Chlamydia pneumoniae-induced Platelet Activation in Cardiovascular Disease : In vitro and In vivo studies

    Author : Hanna Kälvegren; Torbjörn Bengtsson; Arina Richter; Erik Kihlström; Kenneth Persson; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chlamydia pneumoniae; Platelet; atherosclerosis; Infection; LDL-oxidation; Percutaneous coronary intervention; Cardiovascular disease; Serotonin; Reactive oxygen species production; Pharmacology; Farmakologi;

    Abstract : The common risk factors for atherosclerosis, such as obesity, high cholesterol levels, sedentary lifestyle, diabetes and high alcohol intake, only explain approximately 50% of cardiovascular disease events. It is thereby important to identify new mechanisms that can stimulate the process of atherosclerosis. READ MORE

  7. 5. Studies of Eosinophil Cationic Protein (ECP) in vivo and in vitro : Impact of Genetic and Posttranslational Modifications

    Author : Jenny Eriksson; Per Venge; Agneta Trulson; Ester Boix; Uppsala universitet; []
    Keywords : Biomedicine; Eosinophil granulocyte; granular protein; ECP; gene polymorphism; cytotoxicity; SELDI-TOF MS; glycosylation; molecular and functional heterogeneity; fibrosis; Biomedicin;

    Abstract : Eosinophil granulocytes are tissue dwelling leukocytes that are implicated in host defence, particularly against helminthic parasites; they also participate in most inflammatory disorders. Although eosinophils have important roles in host defence mechanisms, their actions can also be harmful to the host as in the allergic inflammation where lung epithelium is destructed due to the release of toxic granule proteins. READ MORE