Search for dissertations about: "motility"

Showing result 16 - 20 of 277 swedish dissertations containing the word motility.

  2. 16. Pathogenic Neisseria : Single cell motility, multicellular dynamics and antimicrobial susceptibility

    Author : Olaspers Sara Eriksson; Ann-Beth Jonsson; Matthew Francis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Neisseria; Type IV pili; Twitching motility; PilT; Microcolony dynamics; PilU; NafA; Antimicrobial peptide; Cell-penetrating peptide; molekylär biovetenskap; Molecular Bioscience;

    Abstract : Neisseria meningitidis and Neisseria gonorrhoeae can colonize humans without causing any symptoms. However, gonorrhea and invasive meningococcal disease are serious health concerns. An essential virulence factor for neisserial adhesion to host cells, twitching motility and microcolony formation/aggregation is the retractile type IV pili (Tfp). READ MORE

  4. 17. Sperm motility in Gasterosteiform fishes : The role of salinity and ovarian fluid

    Author : Helena Elofsson; Bertil Borg; Matthew Gage; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi;

    Abstract : In externally fertilising fishes, various factors in the surrounding environment may influence the viability of the sperm and eggs, thus determining the success of reproduction. In this thesis, the influence of salinity and ovarian fluid on sperm motility has been investigated in three Gasterosteiform fishes. READ MORE

  5. 18. Motility of human polymorphonuclear leukocytes : An image processing approach

    Author : Mikael Gustafsson; Erik Gylfe; Linköpings universitet; []
    Keywords : Human polymorphonuclear leukocytes; locomotion; phagocytosis; Saccharomyces cerevisiae; membrane transport; intracellular free calcium; cellular pH; water influx; actin dynamics; digital video microscopy; image processing; fura-2; BCECF; DII; MEDICINE; MEDICIN;

    Abstract : Cell motility is essential for polymorphonuclear leukocyte (PMN) function in the defense against invading microorganisms and in inflammatory processes. Using digital video microscopy and image processing, individual cells were studied during random locomotion, chemotactic locomotion and phagocytosis. READ MORE

  6. 19. Gastrointestinal motility and the role of gonadotropin-releasing hormone (GnRH)

    Author : Oskar Hammar; Internmedicin - epidemiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gonadotropin releasing hormone; intestinal motility; luteinizing hormone; Sjögrens syndrome; in vitro fertilization;

    Abstract : This thesis explores the relation between gonadotropin-releasing hormone (GnRH) and gastrointestinal symptoms and dysmotility. In primary Sjögren’s syndrome (pSS), a patient group with high levels of GnRH antibodies, associations between objective signs and symptoms of autonomic dysfunction (AD), impaired gastric emptying (IGE), and inflammatory and serological features were studied. READ MORE

  7. 20. Adapting to succeed : Post-transcriptional gene regulation in Salmonella

    Author : Alisa Rizvanovic; Erik Holmqvist; Fabien Darfeuille; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Salmonella; gene regulation; post-transcriptional regulation; RNA-binding protein; ProQ; sRNA; flagella; motility; antibiotic persistence;

    Abstract : Salmonella are zoonotic pathogens of worldwide economic and health importance. Both during life outside and inside the host, these pathogens are subject to continuously changing environmental conditions, such as temperature changes, acid stress, nutrient limitations, and others. READ MORE